From patchwork Wed Mar 27 16:03:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606979 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D0AA412F371; Wed, 27 Mar 2024 16:03:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555404; cv=none; b=YFMejlpyDRRVsnwYcOXGnCupvsxGJdvdG/wO4i8/m30e/OyXKwb0ABghbwe43VoYdyI1JyY1PTXp6mqC/jfHEq2mNp5OoFSWsDp5W7+J09ggE4RWbRjVeDIJQM1XcmwrGFJ0bKNfdVAt/C5fxdfsUb1Hqh1Vfp/XvPE5Ld6tE0A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555404; c=relaxed/simple; bh=nekEyro+ZBiBC3Jph/JAdh6s6rlimKe/jXtOQ6UpFm0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=cmcr27AVWa6NnneX0h9xF+BcPEqnIUxSjUy3QGhjXoFq164Phtwr68mHc39ojyw8NGs498TNiL+2jSOe0WwKLjNc5vqtcTwkwVT7qHFR/bfKV6UQoA4TrDR05LcoZhnOdbZKIy/KUJ6xCcxkPhu4eobEH1tzsGZ6Z6d7ZT3nCFE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=nxmkJqSX; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="nxmkJqSX" Received: from apais-vm1.0synte4vioeebbvidf5q0vz2ua.xx.internal.cloudapp.net (unknown [52.183.86.224]) by linux.microsoft.com (Postfix) with ESMTPSA id 1998C2085CFD; Wed, 27 Mar 2024 09:03:21 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1998C2085CFD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555401; bh=wCLpjQkL/ru41Ip2DKr6ngKIXssxI+yPvh/4tHpaDQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nxmkJqSXmGl7g68HXDx/9x2GA+7p2WKJQiiVe8QorJ/57CF9t5z1JvzkAHjTTRn5e Fm7Ss7Gx/+oc1I6X+C4UOU9dGhWfADCrdxQin+eotT6IIUf3OV8L3zN0V33d4sRdjA xwDGCsWcNNYAi7U4jn/Elfwlge9z4T9e0VLYOiyQ= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 1/9] hyperv: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:06 +0000 Message-Id: <20240327160314.9982-2-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/hv/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais --- drivers/hv/channel.c | 8 ++++---- drivers/hv/channel_mgmt.c | 5 ++--- drivers/hv/connection.c | 9 +++++---- drivers/hv/hv.c | 3 +-- drivers/hv/hv_balloon.c | 4 ++-- drivers/hv/hv_fcopy.c | 8 ++++---- drivers/hv/hv_kvp.c | 8 ++++---- drivers/hv/hv_snapshot.c | 8 ++++---- drivers/hv/hyperv_vmbus.h | 9 +++++---- drivers/hv/vmbus_drv.c | 19 ++++++++++--------- include/linux/hyperv.h | 2 +- 11 files changed, 42 insertions(+), 41 deletions(-) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index adbf674355b2..876d78eb4dce 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -859,7 +859,7 @@ void vmbus_reset_channel_cb(struct vmbus_channel *channel) unsigned long flags; /* - * vmbus_on_event(), running in the per-channel tasklet, can race + * vmbus_on_event(), running in the per-channel work, can race * with vmbus_close_internal() in the case of SMP guest, e.g., when * the former is accessing channel->inbound.ring_buffer, the latter * could be freeing the ring_buffer pages, so here we must stop it @@ -871,7 +871,7 @@ void vmbus_reset_channel_cb(struct vmbus_channel *channel) * and that the channel ring buffer is no longer being accessed, cf. * the calls to napi_disable() in netvsc_device_remove(). */ - tasklet_disable(&channel->callback_event); + disable_work_sync(&channel->callback_event); /* See the inline comments in vmbus_chan_sched(). */ spin_lock_irqsave(&channel->sched_lock, flags); @@ -880,8 +880,8 @@ void vmbus_reset_channel_cb(struct vmbus_channel *channel) channel->sc_creation_callback = NULL; - /* Re-enable tasklet for use on re-open */ - tasklet_enable(&channel->callback_event); + /* Re-enable work for use on re-open */ + enable_and_queue_work(system_bh_wq, &channel->callback_event); } static int vmbus_close_internal(struct vmbus_channel *channel) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 2f4d09ce027a..58397071a0de 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -353,8 +353,7 @@ static struct vmbus_channel *alloc_channel(void) INIT_LIST_HEAD(&channel->sc_list); - tasklet_init(&channel->callback_event, - vmbus_on_event, (unsigned long)channel); + INIT_WORK(&channel->callback_event, vmbus_on_event); hv_ringbuffer_pre_init(channel); @@ -366,7 +365,7 @@ static struct vmbus_channel *alloc_channel(void) */ static void free_channel(struct vmbus_channel *channel) { - tasklet_kill(&channel->callback_event); + cancel_work_sync(&channel->callback_event); vmbus_remove_channel_attr_group(channel); kobject_put(&channel->kobj); diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 3cabeeabb1ca..f2a3394a8303 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -372,12 +372,13 @@ struct vmbus_channel *relid2channel(u32 relid) * 3. Once we return, enable signaling from the host. Once this * state is set we check to see if additional packets are * available to read. In this case we repeat the process. - * If this tasklet has been running for a long time + * If this work has been running for a long time * then reschedule ourselves. */ -void vmbus_on_event(unsigned long data) +void vmbus_on_event(struct work_struct *t) { - struct vmbus_channel *channel = (void *) data; + struct vmbus_channel *channel = from_work(channel, t, + callback_event); void (*callback_fn)(void *context); trace_vmbus_on_event(channel); @@ -401,7 +402,7 @@ void vmbus_on_event(unsigned long data) return; hv_begin_read(&channel->inbound); - tasklet_schedule(&channel->callback_event); + queue_work(system_bh_wq, &channel->callback_event); } /* diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index a8ad728354cb..2af92f08f9ce 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -119,8 +119,7 @@ int hv_synic_alloc(void) for_each_present_cpu(cpu) { hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); - tasklet_init(&hv_cpu->msg_dpc, - vmbus_on_msg_dpc, (unsigned long) hv_cpu); + INIT_WORK(&hv_cpu->msg_dpc, vmbus_on_msg_dpc); if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) { hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC); diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index e000fa3b9f97..c7efa2ff4cdf 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -2083,7 +2083,7 @@ static int balloon_suspend(struct hv_device *hv_dev) { struct hv_dynmem_device *dm = hv_get_drvdata(hv_dev); - tasklet_disable(&hv_dev->channel->callback_event); + disable_work_sync(&hv_dev->channel->callback_event); cancel_work_sync(&dm->balloon_wrk.wrk); cancel_work_sync(&dm->ha_wrk.wrk); @@ -2094,7 +2094,7 @@ static int balloon_suspend(struct hv_device *hv_dev) vmbus_close(hv_dev->channel); } - tasklet_enable(&hv_dev->channel->callback_event); + enable_and_queue_work(system_bh_wq, &hv_dev->channel->callback_event); return 0; diff --git a/drivers/hv/hv_fcopy.c b/drivers/hv/hv_fcopy.c index 922d83eb7ddf..fd6799293c17 100644 --- a/drivers/hv/hv_fcopy.c +++ b/drivers/hv/hv_fcopy.c @@ -71,7 +71,7 @@ static void fcopy_poll_wrapper(void *channel) { /* Transaction is finished, reset the state here to avoid races. */ fcopy_transaction.state = HVUTIL_READY; - tasklet_schedule(&((struct vmbus_channel *)channel)->callback_event); + queue_work(system_bh_wq, &((struct vmbus_channel *)channel)->callback_event); } static void fcopy_timeout_func(struct work_struct *dummy) @@ -391,7 +391,7 @@ int hv_fcopy_pre_suspend(void) if (!fcopy_msg) return -ENOMEM; - tasklet_disable(&channel->callback_event); + disable_work_sync(&channel->callback_event); fcopy_msg->operation = CANCEL_FCOPY; @@ -404,7 +404,7 @@ int hv_fcopy_pre_suspend(void) fcopy_transaction.state = HVUTIL_READY; - /* tasklet_enable() will be called in hv_fcopy_pre_resume(). */ + /* enable_and_queue_work(system_bh_wq, ) will be called in hv_fcopy_pre_resume(). */ return 0; } @@ -412,7 +412,7 @@ int hv_fcopy_pre_resume(void) { struct vmbus_channel *channel = fcopy_transaction.recv_channel; - tasklet_enable(&channel->callback_event); + enable_and_queue_work(system_bh_wq, &channel->callback_event); return 0; } diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index d35b60c06114..85b8fb4a3d2e 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -113,7 +113,7 @@ static void kvp_poll_wrapper(void *channel) { /* Transaction is finished, reset the state here to avoid races. */ kvp_transaction.state = HVUTIL_READY; - tasklet_schedule(&((struct vmbus_channel *)channel)->callback_event); + queue_work(system_bh_wq, &((struct vmbus_channel *)channel)->callback_event); } static void kvp_register_done(void) @@ -160,7 +160,7 @@ static void kvp_timeout_func(struct work_struct *dummy) static void kvp_host_handshake_func(struct work_struct *dummy) { - tasklet_schedule(&kvp_transaction.recv_channel->callback_event); + queue_work(system_bh_wq, &kvp_transaction.recv_channel->callback_event); } static int kvp_handle_handshake(struct hv_kvp_msg *msg) @@ -786,7 +786,7 @@ int hv_kvp_pre_suspend(void) { struct vmbus_channel *channel = kvp_transaction.recv_channel; - tasklet_disable(&channel->callback_event); + disable_work_sync(&channel->callback_event); /* * If there is a pending transtion, it's unnecessary to tell the host @@ -809,7 +809,7 @@ int hv_kvp_pre_resume(void) { struct vmbus_channel *channel = kvp_transaction.recv_channel; - tasklet_enable(&channel->callback_event); + enable_and_queue_work(system_bh_wq, &channel->callback_event); return 0; } diff --git a/drivers/hv/hv_snapshot.c b/drivers/hv/hv_snapshot.c index 0d2184be1691..46c2263d2591 100644 --- a/drivers/hv/hv_snapshot.c +++ b/drivers/hv/hv_snapshot.c @@ -83,7 +83,7 @@ static void vss_poll_wrapper(void *channel) { /* Transaction is finished, reset the state here to avoid races. */ vss_transaction.state = HVUTIL_READY; - tasklet_schedule(&((struct vmbus_channel *)channel)->callback_event); + queue_work(system_bh_wq, &((struct vmbus_channel *)channel)->callback_event); } /* @@ -421,7 +421,7 @@ int hv_vss_pre_suspend(void) if (!vss_msg) return -ENOMEM; - tasklet_disable(&channel->callback_event); + disable_work_sync(&channel->callback_event); vss_msg->vss_hdr.operation = VSS_OP_THAW; @@ -435,7 +435,7 @@ int hv_vss_pre_suspend(void) vss_transaction.state = HVUTIL_READY; - /* tasklet_enable() will be called in hv_vss_pre_resume(). */ + /* enable_and_queue_work() will be called in hv_vss_pre_resume(). */ return 0; } @@ -443,7 +443,7 @@ int hv_vss_pre_resume(void) { struct vmbus_channel *channel = vss_transaction.recv_channel; - tasklet_enable(&channel->callback_event); + enable_and_queue_work(system_bh_wq, &channel->callback_event); return 0; } diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index f6b1e710f805..95ca570ac7af 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -19,6 +19,7 @@ #include #include #include +#include #include "hv_trace.h" @@ -136,10 +137,10 @@ struct hv_per_cpu_context { /* * Starting with win8, we can take channel interrupts on any CPU; - * we will manage the tasklet that handles events messages on a per CPU + * we will manage the work that handles events messages on a per CPU * basis. */ - struct tasklet_struct msg_dpc; + struct work_struct msg_dpc; }; struct hv_context { @@ -366,8 +367,8 @@ void vmbus_disconnect(void); int vmbus_post_msg(void *buffer, size_t buflen, bool can_sleep); -void vmbus_on_event(unsigned long data); -void vmbus_on_msg_dpc(unsigned long data); +void vmbus_on_event(struct work_struct *t); +void vmbus_on_msg_dpc(struct work_struct *t); int hv_kvp_init(struct hv_util_service *srv); void hv_kvp_deinit(void); diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 4cb17603a828..d9755054a881 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1025,9 +1025,9 @@ static void vmbus_onmessage_work(struct work_struct *work) kfree(ctx); } -void vmbus_on_msg_dpc(unsigned long data) +void vmbus_on_msg_dpc(struct work_struct *t) { - struct hv_per_cpu_context *hv_cpu = (void *)data; + struct hv_per_cpu_context *hv_cpu = from_work(hv_cpu, t, msg_dpc); void *page_addr = hv_cpu->synic_message_page; struct hv_message msg_copy, *msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; @@ -1131,7 +1131,7 @@ void vmbus_on_msg_dpc(unsigned long data) * before sending the rescind message of the same * channel. These messages are sent to the guest's * connect CPU; the guest then starts processing them - * in the tasklet handler on this CPU: + * in the work handler on this CPU: * * VMBUS_CONNECT_CPU * @@ -1276,7 +1276,7 @@ static void vmbus_chan_sched(struct hv_per_cpu_context *hv_cpu) hv_begin_read(&channel->inbound); fallthrough; case HV_CALL_DIRECT: - tasklet_schedule(&channel->callback_event); + queue_work(system_bh_wq, &channel->callback_event); } sched_unlock: @@ -1304,7 +1304,7 @@ static void vmbus_isr(void) hv_stimer0_isr(); vmbus_signal_eom(msg, HVMSG_TIMER_EXPIRED); } else - tasklet_schedule(&hv_cpu->msg_dpc); + queue_work(system_bh_wq, &hv_cpu->msg_dpc); } add_interrupt_randomness(vmbus_interrupt); @@ -2371,10 +2371,11 @@ static int vmbus_bus_suspend(struct device *dev) hv_context.cpu_context, VMBUS_CONNECT_CPU); struct vmbus_channel *channel, *sc; - tasklet_disable(&hv_cpu->msg_dpc); + disable_work_sync(&hv_cpu->msg_dpc); vmbus_connection.ignore_any_offer_msg = true; - /* The tasklet_enable() takes care of providing a memory barrier */ - tasklet_enable(&hv_cpu->msg_dpc); + /* The enable_and_queue_work() takes care of + * providing a memory barrier */ + enable_and_queue_work(system_bh_wq, &hv_cpu->msg_dpc); /* Drain all the workqueues as we are in suspend */ drain_workqueue(vmbus_connection.rescind_work_queue); @@ -2692,7 +2693,7 @@ static void __exit vmbus_exit(void) struct hv_per_cpu_context *hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu); - tasklet_kill(&hv_cpu->msg_dpc); + cancel_work_sync(&hv_cpu->msg_dpc); } hv_debug_rm_all_dir(); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6ef0557b4bff..db3d85ea5ce6 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -882,7 +882,7 @@ struct vmbus_channel { bool out_full_flag; /* Channel callback's invoked in softirq context */ - struct tasklet_struct callback_event; + struct work_struct callback_event; void (*onchannel_callback)(void *context); void *channel_callback_context; From patchwork Wed Mar 27 16:03:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606984 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C752212F584; 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arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="MDAezd8F" Received: from apais-vm1.0synte4vioeebbvidf5q0vz2ua.xx.internal.cloudapp.net (unknown [52.183.86.224]) by linux.microsoft.com (Postfix) with ESMTPSA id 48EA62085C8D; Wed, 27 Mar 2024 09:03:21 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 48EA62085C8D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555401; bh=eiNu8Icjk/gLUUheW2yHuJCG+KqfsXsuM22O5Z09Fnw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MDAezd8FRkrRqJXsc4qctgDBOFC1szlANjrZvvZGzJLIld/AdeWXyY6w8T8s43Ix/ vXlmGUB/gkCZlqGex0ByzSbBjlutAaR7KEzYgXL88DeZ1YxbfAoJQQN+2STBjLgn2g 5hnqp4VWxChr8aVltPhtfGgGlwOrBOVP4FvJQHxg= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 2/9] dma: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:07 +0000 Message-Id: <20240327160314.9982-3-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/dma/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais --- drivers/dma/altera-msgdma.c | 15 ++++---- drivers/dma/apple-admac.c | 15 ++++---- drivers/dma/at_hdmac.c | 2 +- drivers/dma/at_xdmac.c | 15 ++++---- drivers/dma/bcm2835-dma.c | 2 +- drivers/dma/dma-axi-dmac.c | 2 +- drivers/dma/dma-jz4780.c | 2 +- .../dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 +- drivers/dma/dw-edma/dw-edma-core.c | 2 +- drivers/dma/dw/core.c | 13 +++---- drivers/dma/dw/regs.h | 3 +- drivers/dma/ep93xx_dma.c | 15 ++++---- drivers/dma/fsl-edma-common.c | 2 +- drivers/dma/fsl-qdma.c | 2 +- drivers/dma/fsl_raid.c | 11 +++--- drivers/dma/fsl_raid.h | 2 +- drivers/dma/fsldma.c | 15 ++++---- drivers/dma/fsldma.h | 3 +- drivers/dma/hisi_dma.c | 2 +- drivers/dma/hsu/hsu.c | 2 +- drivers/dma/idma64.c | 4 +-- drivers/dma/img-mdc-dma.c | 2 +- drivers/dma/imx-dma.c | 27 +++++++------- drivers/dma/imx-sdma.c | 6 ++-- drivers/dma/ioat/dma.c | 17 ++++----- drivers/dma/ioat/dma.h | 5 +-- drivers/dma/ioat/init.c | 2 +- drivers/dma/k3dma.c | 19 +++++----- drivers/dma/mediatek/mtk-cqdma.c | 35 ++++++++++--------- drivers/dma/mediatek/mtk-hsdma.c | 2 +- drivers/dma/mediatek/mtk-uart-apdma.c | 4 +-- drivers/dma/mmp_pdma.c | 13 +++---- drivers/dma/mmp_tdma.c | 11 +++--- drivers/dma/mpc512x_dma.c | 17 ++++----- drivers/dma/mv_xor.c | 13 +++---- drivers/dma/mv_xor.h | 5 +-- drivers/dma/mv_xor_v2.c | 23 ++++++------ drivers/dma/mxs-dma.c | 13 +++---- drivers/dma/nbpfaxi.c | 15 ++++---- drivers/dma/owl-dma.c | 2 +- drivers/dma/pch_dma.c | 17 ++++----- drivers/dma/pl330.c | 31 ++++++++-------- drivers/dma/plx_dma.c | 13 +++---- drivers/dma/ppc4xx/adma.c | 17 ++++----- drivers/dma/ppc4xx/adma.h | 5 +-- drivers/dma/pxa_dma.c | 2 +- drivers/dma/qcom/bam_dma.c | 35 ++++++++++--------- drivers/dma/qcom/gpi.c | 18 +++++----- drivers/dma/qcom/hidma.c | 11 +++--- drivers/dma/qcom/hidma.h | 5 +-- drivers/dma/qcom/hidma_ll.c | 11 +++--- drivers/dma/qcom/qcom_adm.c | 2 +- drivers/dma/sa11x0-dma.c | 27 +++++++------- drivers/dma/sf-pdma/sf-pdma.c | 23 ++++++------ drivers/dma/sf-pdma/sf-pdma.h | 5 +-- drivers/dma/sprd-dma.c | 2 +- drivers/dma/st_fdma.c | 2 +- drivers/dma/ste_dma40.c | 17 ++++----- drivers/dma/sun6i-dma.c | 33 ++++++++--------- drivers/dma/tegra186-gpc-dma.c | 2 +- drivers/dma/tegra20-apb-dma.c | 19 +++++----- drivers/dma/tegra210-adma.c | 2 +- drivers/dma/ti/edma.c | 2 +- drivers/dma/ti/k3-udma.c | 11 +++--- drivers/dma/ti/omap-dma.c | 2 +- drivers/dma/timb_dma.c | 23 ++++++------ drivers/dma/txx9dmac.c | 29 +++++++-------- drivers/dma/txx9dmac.h | 5 +-- drivers/dma/virt-dma.c | 9 ++--- drivers/dma/virt-dma.h | 9 ++--- drivers/dma/xgene-dma.c | 21 +++++------ drivers/dma/xilinx/xilinx_dma.c | 23 ++++++------ drivers/dma/xilinx/xilinx_dpdma.c | 21 +++++------ drivers/dma/xilinx/zynqmp_dma.c | 21 +++++------ 74 files changed, 442 insertions(+), 395 deletions(-) diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c index a8e3615235b8..611b5290324b 100644 --- a/drivers/dma/altera-msgdma.c +++ b/drivers/dma/altera-msgdma.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -170,7 +171,7 @@ struct msgdma_sw_desc { struct msgdma_device { spinlock_t lock; struct device *dev; - struct tasklet_struct irq_tasklet; + struct work_struct irq_work; struct list_head pending_list; struct list_head free_list; struct list_head active_list; @@ -676,12 +677,12 @@ static int msgdma_alloc_chan_resources(struct dma_chan *dchan) } /** - * msgdma_tasklet - Schedule completion tasklet + * msgdma_work - Schedule completion work * @t: Pointer to the Altera sSGDMA channel structure */ -static void msgdma_tasklet(struct tasklet_struct *t) +static void msgdma_work(struct work_struct *t) { - struct msgdma_device *mdev = from_tasklet(mdev, t, irq_tasklet); + struct msgdma_device *mdev = from_work(mdev, t, irq_work); u32 count; u32 __maybe_unused size; u32 __maybe_unused status; @@ -740,7 +741,7 @@ static irqreturn_t msgdma_irq_handler(int irq, void *data) spin_unlock(&mdev->lock); } - tasklet_schedule(&mdev->irq_tasklet); + queue_work(system_bh_wq, &mdev->irq_work); /* Clear interrupt in mSGDMA controller */ iowrite32(MSGDMA_CSR_STAT_IRQ, mdev->csr + MSGDMA_CSR_STATUS); @@ -758,7 +759,7 @@ static void msgdma_dev_remove(struct msgdma_device *mdev) return; devm_free_irq(mdev->dev, mdev->irq, mdev); - tasklet_kill(&mdev->irq_tasklet); + cancel_work_sync(&mdev->irq_work); list_del(&mdev->dmachan.device_node); } @@ -844,7 +845,7 @@ static int msgdma_probe(struct platform_device *pdev) if (ret) return ret; - tasklet_setup(&mdev->irq_tasklet, msgdma_tasklet); + INIT_WORK(&mdev->irq_work, msgdma_work); dma_cookie_init(&mdev->dmachan); diff --git a/drivers/dma/apple-admac.c b/drivers/dma/apple-admac.c index 9588773dd2eb..7cdb4b6b5f81 100644 --- a/drivers/dma/apple-admac.c +++ b/drivers/dma/apple-admac.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -89,7 +90,7 @@ struct admac_chan { unsigned int no; struct admac_data *host; struct dma_chan chan; - struct tasklet_struct tasklet; + struct work_struct work; u32 carveout; @@ -520,7 +521,7 @@ static int admac_terminate_all(struct dma_chan *chan) adchan->current_tx = NULL; } /* - * Descriptors can only be freed after the tasklet + * Descriptors can only be freed after the work * has been killed (in admac_synchronize). */ list_splice_tail_init(&adchan->submitted, &adchan->to_free); @@ -541,7 +542,7 @@ static void admac_synchronize(struct dma_chan *chan) list_splice_tail_init(&adchan->to_free, &head); spin_unlock_irqrestore(&adchan->lock, flags); - tasklet_kill(&adchan->tasklet); + cancel_work_sync(&adchan->work); list_for_each_entry_safe(adtx, _adtx, &head, node) { list_del(&adtx->node); @@ -660,7 +661,7 @@ static void admac_handle_status_desc_done(struct admac_data *ad, int channo) tx->reclaimed_pos %= 2 * tx->buf_len; admac_cyclic_write_desc(ad, channo, tx); - tasklet_schedule(&adchan->tasklet); + queue_work(system_bh_wq, &adchan->work); } spin_unlock_irqrestore(&adchan->lock, flags); } @@ -710,9 +711,9 @@ static irqreturn_t admac_interrupt(int irq, void *devid) return IRQ_HANDLED; } -static void admac_chan_tasklet(struct tasklet_struct *t) +static void admac_chan_work(struct work_struct *t) { - struct admac_chan *adchan = from_tasklet(adchan, t, tasklet); + struct admac_chan *adchan = from_work(adchan, t, work); struct admac_tx *adtx; struct dmaengine_desc_callback cb; struct dmaengine_result tx_result; @@ -884,7 +885,7 @@ static int admac_probe(struct platform_device *pdev) INIT_LIST_HEAD(&adchan->issued); INIT_LIST_HEAD(&adchan->to_free); list_add_tail(&adchan->chan.device_node, &dma->channels); - tasklet_setup(&adchan->tasklet, admac_chan_tasklet); + INIT_WORK(&adchan->work, admac_chan_work); } err = reset_control_reset(ad->rstc); diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 40052d1bd0b5..335816473a61 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -272,7 +272,7 @@ enum atc_status { * @per_if: peripheral interface * @mem_if: memory interface * @status: transmit status information from irq/prep* functions - * to tasklet (use atomic operations) + * to work (use atomic operations) * @save_cfg: configuration register that is saved on suspend/resume cycle * @save_dscr: for cyclic operations, preserve next descriptor address in * the cyclic list on suspend/resume cycle diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 299396121e6d..a73eab2881f9 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -228,7 +229,7 @@ struct at_xdmac_chan { u32 save_cndc; u32 irq_status; unsigned long status; - struct tasklet_struct tasklet; + struct work_struct work; struct dma_slave_config sconfig; spinlock_t lock; @@ -1762,9 +1763,9 @@ static void at_xdmac_handle_error(struct at_xdmac_chan *atchan) /* Then continue with usual descriptor management */ } -static void at_xdmac_tasklet(struct tasklet_struct *t) +static void at_xdmac_work(struct work_struct *t) { - struct at_xdmac_chan *atchan = from_tasklet(atchan, t, tasklet); + struct at_xdmac_chan *atchan = from_work(atchan, t, work); struct at_xdmac *atxdmac = to_at_xdmac(atchan->chan.device); struct at_xdmac_desc *desc; struct dma_async_tx_descriptor *txd; @@ -1869,7 +1870,7 @@ static irqreturn_t at_xdmac_interrupt(int irq, void *dev_id) if (atchan->irq_status & (AT_XDMAC_CIS_RBEIS | AT_XDMAC_CIS_WBEIS)) at_xdmac_write(atxdmac, AT_XDMAC_GD, atchan->mask); - tasklet_schedule(&atchan->tasklet); + queue_work(system_bh_wq, &atchan->work); ret = IRQ_HANDLED; } @@ -2307,7 +2308,7 @@ static int at_xdmac_probe(struct platform_device *pdev) return PTR_ERR(atxdmac->clk); } - /* Do not use dev res to prevent races with tasklet */ + /* Do not use dev res to prevent races with work */ ret = request_irq(atxdmac->irq, at_xdmac_interrupt, 0, "at_xdmac", atxdmac); if (ret) { dev_err(&pdev->dev, "can't request irq\n"); @@ -2387,7 +2388,7 @@ static int at_xdmac_probe(struct platform_device *pdev) spin_lock_init(&atchan->lock); INIT_LIST_HEAD(&atchan->xfers_list); INIT_LIST_HEAD(&atchan->free_descs_list); - tasklet_setup(&atchan->tasklet, at_xdmac_tasklet); + INIT_WORK(&atchan->work, at_xdmac_work); /* Clear pending interrupts. */ while (at_xdmac_chan_read(atchan, AT_XDMAC_CIS)) @@ -2449,7 +2450,7 @@ static void at_xdmac_remove(struct platform_device *pdev) for (i = 0; i < atxdmac->dma.chancnt; i++) { struct at_xdmac_chan *atchan = &atxdmac->chan[i]; - tasklet_kill(&atchan->tasklet); + cancel_work_sync(&atchan->work); at_xdmac_free_chan_resources(&atchan->chan); } } diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 9d74fe97452e..079d04986b73 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -846,7 +846,7 @@ static void bcm2835_dma_free(struct bcm2835_dmadev *od) list_for_each_entry_safe(c, next, &od->ddev.channels, vc.chan.device_node) { list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); } dma_unmap_page_attrs(od->ddev.dev, od->zero_page, PAGE_SIZE, diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 4e339c04fc1e..95df109d3161 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -1136,7 +1136,7 @@ static void axi_dmac_remove(struct platform_device *pdev) of_dma_controller_free(pdev->dev.of_node); free_irq(dmac->irq, dmac); - tasklet_kill(&dmac->chan.vchan.task); + cancel_work_sync(&dmac->chan.vchan.work); dma_async_device_unregister(&dmac->dma_dev); clk_disable_unprepare(dmac->clk); } diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index c9cfa341db51..d8ce91369176 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -1019,7 +1019,7 @@ static void jz4780_dma_remove(struct platform_device *pdev) free_irq(jzdma->irq, jzdma); for (i = 0; i < jzdma->soc_data->nb_channels; i++) - tasklet_kill(&jzdma->chan[i].vchan.task); + cancel_work_sync(&jzdma->chan[i].vchan.work); } static const struct jz4780_dma_soc_data jz4740_dma_soc_data = { diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index a86a81ff0caa..1c3c58496885 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -1636,7 +1636,7 @@ static void dw_remove(struct platform_device *pdev) list_for_each_entry_safe(chan, _chan, &dw->dma.channels, vc.chan.device_node) { list_del(&chan->vc.chan.device_node); - tasklet_kill(&chan->vc.task); + cancel_work_sync(&chan->vc.work); } } diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 68236247059d..34e9d2dcc00b 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -1003,7 +1003,7 @@ int dw_edma_remove(struct dw_edma_chip *chip) dma_async_device_unregister(&dw->dma); list_for_each_entry_safe(chan, _chan, &dw->dma.channels, vc.chan.device_node) { - tasklet_kill(&chan->vc.task); + cancel_work_sync(&chan->vc.work); list_del(&chan->vc.chan.device_node); } diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index 5f7d690e3dba..0e13750e9a19 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "../dmaengine.h" #include "internal.h" @@ -181,7 +182,7 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first) __func__); dwc_dump_chan_regs(dwc); - /* The tasklet will hopefully advance the queue... */ + /* The work will hopefully advance the queue... */ return; } @@ -460,9 +461,9 @@ static void dwc_handle_error(struct dw_dma *dw, struct dw_dma_chan *dwc) dwc_descriptor_complete(dwc, bad_desc, true); } -static void dw_dma_tasklet(struct tasklet_struct *t) +static void dw_dma_work(struct work_struct *t) { - struct dw_dma *dw = from_tasklet(dw, t, tasklet); + struct dw_dma *dw = from_work(dw, t, work); struct dw_dma_chan *dwc; u32 status_xfer; u32 status_err; @@ -526,7 +527,7 @@ static irqreturn_t dw_dma_interrupt(int irq, void *dev_id) channel_clear_bit(dw, MASK.ERROR, (1 << 8) - 1); } - tasklet_schedule(&dw->tasklet); + queue_work(system_bh_wq, &dw->work); return IRQ_HANDLED; } @@ -1138,7 +1139,7 @@ int do_dma_probe(struct dw_dma_chip *chip) goto err_pdata; } - tasklet_setup(&dw->tasklet, dw_dma_tasklet); + INIT_WORK(&dw->work, dw_dma_work); err = request_irq(chip->irq, dw_dma_interrupt, IRQF_SHARED, dw->name, dw); @@ -1283,7 +1284,7 @@ int do_dma_remove(struct dw_dma_chip *chip) dma_async_device_unregister(&dw->dma); free_irq(chip->irq, dw); - tasklet_kill(&dw->tasklet); + cancel_work_sync(&dw->work); list_for_each_entry_safe(dwc, _dwc, &dw->dma.channels, chan.device_node) { diff --git a/drivers/dma/dw/regs.h b/drivers/dma/dw/regs.h index 76654bd13c1a..332a4eba5e9f 100644 --- a/drivers/dma/dw/regs.h +++ b/drivers/dma/dw/regs.h @@ -12,6 +12,7 @@ #include #include +#include #include "internal.h" @@ -315,7 +316,7 @@ struct dw_dma { char name[20]; void __iomem *regs; struct dma_pool *desc_pool; - struct tasklet_struct tasklet; + struct work_struct work; /* channels */ struct dw_dma_chan *chan; diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index d6c60635e90d..acd9bde36e1b 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -24,6 +24,7 @@ #include #include +#include #include "dmaengine.h" @@ -136,7 +137,7 @@ struct ep93xx_dma_desc { * @regs: memory mapped registers * @irq: interrupt number of the channel * @clk: clock used by this channel - * @tasklet: channel specific tasklet used for callbacks + * @work: channel specific work used for callbacks * @lock: lock protecting the fields following * @flags: flags for the channel * @buffer: which buffer to use next (0/1) @@ -167,7 +168,7 @@ struct ep93xx_dma_chan { void __iomem *regs; int irq; struct clk *clk; - struct tasklet_struct tasklet; + struct work_struct work; /* protects the fields following */ spinlock_t lock; unsigned long flags; @@ -745,9 +746,9 @@ static void ep93xx_dma_advance_work(struct ep93xx_dma_chan *edmac) spin_unlock_irqrestore(&edmac->lock, flags); } -static void ep93xx_dma_tasklet(struct tasklet_struct *t) +static void ep93xx_dma_work(struct work_struct *t) { - struct ep93xx_dma_chan *edmac = from_tasklet(edmac, t, tasklet); + struct ep93xx_dma_chan *edmac = from_work(edmac, t, work); struct ep93xx_dma_desc *desc, *d; struct dmaengine_desc_callback cb; LIST_HEAD(list); @@ -802,12 +803,12 @@ static irqreturn_t ep93xx_dma_interrupt(int irq, void *dev_id) switch (edmac->edma->hw_interrupt(edmac)) { case INTERRUPT_DONE: desc->complete = true; - tasklet_schedule(&edmac->tasklet); + queue_work(system_bh_wq, &edmac->work); break; case INTERRUPT_NEXT_BUFFER: if (test_bit(EP93XX_DMA_IS_CYCLIC, &edmac->flags)) - tasklet_schedule(&edmac->tasklet); + queue_work(system_bh_wq, &edmac->work); break; default: @@ -1351,7 +1352,7 @@ static int __init ep93xx_dma_probe(struct platform_device *pdev) INIT_LIST_HEAD(&edmac->active); INIT_LIST_HEAD(&edmac->queue); INIT_LIST_HEAD(&edmac->free_list); - tasklet_setup(&edmac->tasklet, ep93xx_dma_tasklet); + INIT_WORK(&edmac->work, ep93xx_dma_work); list_add_tail(&edmac->chan.device_node, &dma_dev->channels); diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index b18faa7cfedb..5f568ca11b67 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -847,7 +847,7 @@ void fsl_edma_cleanup_vchan(struct dma_device *dmadev) list_for_each_entry_safe(chan, _chan, &dmadev->channels, vchan.chan.device_node) { list_del(&chan->vchan.chan.device_node); - tasklet_kill(&chan->vchan.task); + cancel_work_sync(&chan->vchan.work); } } diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index 5005e138fc23..e5bceec1a396 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -1261,7 +1261,7 @@ static void fsl_qdma_cleanup_vchan(struct dma_device *dmadev) list_for_each_entry_safe(chan, _chan, &dmadev->channels, vchan.chan.device_node) { list_del(&chan->vchan.chan.device_node); - tasklet_kill(&chan->vchan.task); + cancel_work_sync(&chan->vchan.task); } } diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c index 014ff523d5ec..72c495e20f52 100644 --- a/drivers/dma/fsl_raid.c +++ b/drivers/dma/fsl_raid.c @@ -70,6 +70,7 @@ #include #include #include +#include #include "dmaengine.h" #include "fsl_raid.h" @@ -155,9 +156,9 @@ static void fsl_re_cleanup_descs(struct fsl_re_chan *re_chan) fsl_re_issue_pending(&re_chan->chan); } -static void fsl_re_dequeue(struct tasklet_struct *t) +static void fsl_re_dequeue(struct work_struct *t) { - struct fsl_re_chan *re_chan = from_tasklet(re_chan, t, irqtask); + struct fsl_re_chan *re_chan = from_work(re_chan, t, irqtask); struct fsl_re_desc *desc, *_desc; struct fsl_re_hw_desc *hwdesc; unsigned long flags; @@ -224,7 +225,7 @@ static irqreturn_t fsl_re_isr(int irq, void *data) /* Clear interrupt */ out_be32(&re_chan->jrregs->jr_interrupt_status, FSL_RE_CLR_INTR); - tasklet_schedule(&re_chan->irqtask); + queue_work(system_bh_wq, &re_chan->irqtask); return IRQ_HANDLED; } @@ -670,7 +671,7 @@ static int fsl_re_chan_probe(struct platform_device *ofdev, snprintf(chan->name, sizeof(chan->name), "re_jr%02d", q); chandev = &chan_ofdev->dev; - tasklet_setup(&chan->irqtask, fsl_re_dequeue); + INIT_WORK(&chan->irqtask, fsl_re_dequeue); ret = request_irq(chan->irq, fsl_re_isr, 0, chan->name, chandev); if (ret) { @@ -848,7 +849,7 @@ static int fsl_re_probe(struct platform_device *ofdev) static void fsl_re_remove_chan(struct fsl_re_chan *chan) { - tasklet_kill(&chan->irqtask); + cancel_work_sync(&chan->irqtask); dma_pool_free(chan->re_dev->hw_desc_pool, chan->inb_ring_virt_addr, chan->inb_phys_addr); diff --git a/drivers/dma/fsl_raid.h b/drivers/dma/fsl_raid.h index 69d743c04973..d4dfbb7c9984 100644 --- a/drivers/dma/fsl_raid.h +++ b/drivers/dma/fsl_raid.h @@ -275,7 +275,7 @@ struct fsl_re_chan { struct dma_chan chan; struct fsl_re_chan_cfg *jrregs; int irq; - struct tasklet_struct irqtask; + struct work_struct irqtask; u32 alloc_count; /* hw descriptor ring for inbound queue*/ diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 18a6c4bf6275..9f9af6869f2e 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -33,6 +33,7 @@ #include #include #include +#include #include "dmaengine.h" #include "fsldma.h" @@ -968,20 +969,20 @@ static irqreturn_t fsldma_chan_irq(int irq, void *data) chan_err(chan, "irq: unhandled sr 0x%08x\n", stat); /* - * Schedule the tasklet to handle all cleanup of the current + * Schedule the work to handle all cleanup of the current * transaction. It will start a new transaction if there is * one pending. */ - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); chan_dbg(chan, "irq: Exit\n"); return IRQ_HANDLED; } -static void dma_do_tasklet(struct tasklet_struct *t) +static void dma_do_work(struct work_struct *t) { - struct fsldma_chan *chan = from_tasklet(chan, t, tasklet); + struct fsldma_chan *chan = from_work(chan, t, work); - chan_dbg(chan, "tasklet entry\n"); + chan_dbg(chan, "work entry\n"); spin_lock(&chan->desc_lock); @@ -993,7 +994,7 @@ static void dma_do_tasklet(struct tasklet_struct *t) spin_unlock(&chan->desc_lock); - chan_dbg(chan, "tasklet exit\n"); + chan_dbg(chan, "work exit\n"); } static irqreturn_t fsldma_ctrl_irq(int irq, void *data) @@ -1152,7 +1153,7 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev, } fdev->chan[chan->id] = chan; - tasklet_setup(&chan->tasklet, dma_do_tasklet); + INIT_WORK(&chan->work, dma_do_work); snprintf(chan->name, sizeof(chan->name), "chan%d", chan->id); /* Initialize the channel */ diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index 308bed0a560a..c165091e5c6a 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -12,6 +12,7 @@ #include #include #include +#include /* Define data structures needed by Freescale * MPC8540 and MPC8349 DMA controller. @@ -172,7 +173,7 @@ struct fsldma_chan { struct device *dev; /* Channel device */ int irq; /* Channel IRQ */ int id; /* Raw id of this channel */ - struct tasklet_struct tasklet; + struct work_struct work; u32 feature; bool idle; /* DMA controller is idle */ #ifdef CONFIG_PM diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c index 4c47bff81064..5bf7d8b3e959 100644 --- a/drivers/dma/hisi_dma.c +++ b/drivers/dma/hisi_dma.c @@ -720,7 +720,7 @@ static void hisi_dma_disable_qps(struct hisi_dma_dev *hdma_dev) for (i = 0; i < hdma_dev->chan_num; i++) { hisi_dma_disable_qp(hdma_dev, i); - tasklet_kill(&hdma_dev->chan[i].vc.task); + cancel_work_sync(&hdma_dev->chan[i].vc.work); } } diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c index af5a2e252c25..4ea3f18a20ac 100644 --- a/drivers/dma/hsu/hsu.c +++ b/drivers/dma/hsu/hsu.c @@ -500,7 +500,7 @@ int hsu_dma_remove(struct hsu_dma_chip *chip) for (i = 0; i < hsu->nr_channels; i++) { struct hsu_dma_chan *hsuc = &hsu->chan[i]; - tasklet_kill(&hsuc->vchan.task); + cancel_work_sync(&hsuc->vchan.work); } return 0; diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c index 78a938969d7d..7715be6457e8 100644 --- a/drivers/dma/idma64.c +++ b/drivers/dma/idma64.c @@ -613,14 +613,14 @@ static void idma64_remove(struct idma64_chip *chip) /* * Explicitly call devm_request_irq() to avoid the side effects with - * the scheduled tasklets. + * the scheduled works. */ devm_free_irq(chip->dev, chip->irq, idma64); for (i = 0; i < idma64->dma.chancnt; i++) { struct idma64_chan *idma64c = &idma64->chan[i]; - tasklet_kill(&idma64c->vchan.task); + cancel_work_sync(&idma64c->vchan.work); } } diff --git a/drivers/dma/img-mdc-dma.c b/drivers/dma/img-mdc-dma.c index 0532dd2640dc..71245f1b7e28 100644 --- a/drivers/dma/img-mdc-dma.c +++ b/drivers/dma/img-mdc-dma.c @@ -1031,7 +1031,7 @@ static void mdc_dma_remove(struct platform_device *pdev) devm_free_irq(&pdev->dev, mchan->irq, mchan); - tasklet_kill(&mchan->vc.task); + cancel_work_sync(&mchan->vc.work); } pm_runtime_disable(&pdev->dev); diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index ebf7c115d553..1c2baa81c6a7 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -26,6 +26,7 @@ #include #include +#include #include "dmaengine.h" #define IMXDMA_MAX_CHAN_DESCRIPTORS 16 @@ -144,7 +145,7 @@ struct imxdma_channel { struct imxdma_engine *imxdma; unsigned int channel; - struct tasklet_struct dma_tasklet; + struct work_struct dma_work; struct list_head ld_free; struct list_head ld_queue; struct list_head ld_active; @@ -345,8 +346,8 @@ static void imxdma_watchdog(struct timer_list *t) imx_dmav1_writel(imxdma, 0, DMA_CCR(channel)); - /* Tasklet watchdog error handler */ - tasklet_schedule(&imxdmac->dma_tasklet); + /* Work watchdog error handler */ + queue_work(system_bh_wq, &imxdmac->dma_work); dev_dbg(imxdma->dev, "channel %d: watchdog timeout!\n", imxdmac->channel); } @@ -391,8 +392,8 @@ static irqreturn_t imxdma_err_handler(int irq, void *dev_id) imx_dmav1_writel(imxdma, 1 << i, DMA_DBOSR); errcode |= IMX_DMA_ERR_BUFFER; } - /* Tasklet error handler */ - tasklet_schedule(&imxdma->channel[i].dma_tasklet); + /* Work error handler */ + queue_work(system_bh_wq, &imxdma->channel[i].dma_work); dev_warn(imxdma->dev, "DMA timeout on channel %d -%s%s%s%s\n", i, @@ -449,8 +450,8 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac) imx_dmav1_writel(imxdma, tmp, DMA_CCR(chno)); if (imxdma_chan_is_doing_cyclic(imxdmac)) - /* Tasklet progression */ - tasklet_schedule(&imxdmac->dma_tasklet); + /* Work progression */ + queue_work(system_bh_wq, &imxdmac->dma_work); return; } @@ -463,8 +464,8 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac) out: imx_dmav1_writel(imxdma, 0, DMA_CCR(chno)); - /* Tasklet irq */ - tasklet_schedule(&imxdmac->dma_tasklet); + /* Work irq */ + queue_work(system_bh_wq, &imxdmac->dma_work); } static irqreturn_t dma_irq_handler(int irq, void *dev_id) @@ -593,9 +594,9 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) return 0; } -static void imxdma_tasklet(struct tasklet_struct *t) +static void imxdma_work(struct work_struct *t) { - struct imxdma_channel *imxdmac = from_tasklet(imxdmac, t, dma_tasklet); + struct imxdma_channel *imxdmac = from_work(imxdmac, t, dma_work); struct imxdma_engine *imxdma = imxdmac->imxdma; struct imxdma_desc *desc, *next_desc; unsigned long flags; @@ -1143,7 +1144,7 @@ static int __init imxdma_probe(struct platform_device *pdev) INIT_LIST_HEAD(&imxdmac->ld_free); INIT_LIST_HEAD(&imxdmac->ld_active); - tasklet_setup(&imxdmac->dma_tasklet, imxdma_tasklet); + INIT_WORK(&imxdmac->dma_work, imxdma_work); imxdmac->chan.device = &imxdma->dma_device; dma_cookie_init(&imxdmac->chan); imxdmac->channel = i; @@ -1212,7 +1213,7 @@ static void imxdma_free_irq(struct platform_device *pdev, struct imxdma_engine * if (!is_imx1_dma(imxdma)) disable_irq(imxdmac->irq); - tasklet_kill(&imxdmac->dma_tasklet); + cancel_work_sync(&imxdmac->dma_work); } } diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 9b42f5e96b1e..853f7e80bb76 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -881,7 +881,7 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac) /* * The callback is called from the interrupt context in order * to reduce latency and to avoid the risk of altering the - * SDMA transaction status by the time the client tasklet is + * SDMA transaction status by the time the client work is * executed. */ spin_unlock(&sdmac->vc.lock); @@ -2364,11 +2364,11 @@ static void sdma_remove(struct platform_device *pdev) kfree(sdma->script_addrs); clk_unprepare(sdma->clk_ahb); clk_unprepare(sdma->clk_ipg); - /* Kill the tasklet */ + /* cancel work */ for (i = 0; i < MAX_DMA_CHANNELS; i++) { struct sdma_channel *sdmac = &sdma->channel[i]; - tasklet_kill(&sdmac->vc.task); + cancel_work_sync(&sdmac->vc.work); sdma_free_chan_resources(&sdmac->vc.chan); } diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index 79d8957f9e60..16087e2cc4ae 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "dma.h" #include "registers.h" #include "hw.h" @@ -110,7 +111,7 @@ irqreturn_t ioat_dma_do_interrupt(int irq, void *data) for_each_set_bit(bit, &attnstatus, BITS_PER_LONG) { ioat_chan = ioat_chan_by_index(instance, bit); if (test_bit(IOAT_RUN, &ioat_chan->state)) - tasklet_schedule(&ioat_chan->cleanup_task); + queue_work(system_bh_wq, &ioat_chan->cleanup_task); } writeb(intrctrl, instance->reg_base + IOAT_INTRCTRL_OFFSET); @@ -127,7 +128,7 @@ irqreturn_t ioat_dma_do_interrupt_msix(int irq, void *data) struct ioatdma_chan *ioat_chan = data; if (test_bit(IOAT_RUN, &ioat_chan->state)) - tasklet_schedule(&ioat_chan->cleanup_task); + queue_work(system_bh_wq, &ioat_chan->cleanup_task); return IRQ_HANDLED; } @@ -139,8 +140,8 @@ void ioat_stop(struct ioatdma_chan *ioat_chan) int chan_id = chan_num(ioat_chan); struct msix_entry *msix; - /* 1/ stop irq from firing tasklets - * 2/ stop the tasklet from re-arming irqs + /* 1/ stop irq from firing works + * 2/ stop the work from re-arming irqs */ clear_bit(IOAT_RUN, &ioat_chan->state); @@ -161,8 +162,8 @@ void ioat_stop(struct ioatdma_chan *ioat_chan) /* flush inflight timers */ del_timer_sync(&ioat_chan->timer); - /* flush inflight tasklet runs */ - tasklet_kill(&ioat_chan->cleanup_task); + /* flush inflight work runs */ + cancel_work_sync(&ioat_chan->cleanup_task); /* final cleanup now that everything is quiesced and can't re-arm */ ioat_cleanup_event(&ioat_chan->cleanup_task); @@ -690,9 +691,9 @@ static void ioat_cleanup(struct ioatdma_chan *ioat_chan) spin_unlock_bh(&ioat_chan->cleanup_lock); } -void ioat_cleanup_event(struct tasklet_struct *t) +void ioat_cleanup_event(struct work_struct *t) { - struct ioatdma_chan *ioat_chan = from_tasklet(ioat_chan, t, cleanup_task); + struct ioatdma_chan *ioat_chan = from_work(ioat_chan, t, cleanup_task); ioat_cleanup(ioat_chan); if (!test_bit(IOAT_RUN, &ioat_chan->state)) diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index a180171087a8..d5629df04d7d 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -12,6 +12,7 @@ #include #include #include +#include #include "registers.h" #include "hw.h" @@ -109,7 +110,7 @@ struct ioatdma_chan { struct ioatdma_device *ioat_dma; dma_addr_t completion_dma; u64 *completion; - struct tasklet_struct cleanup_task; + struct work_struct cleanup_task; struct kobject kobj; /* ioat v2 / v3 channel attributes @@ -392,7 +393,7 @@ int ioat_reset_hw(struct ioatdma_chan *ioat_chan); enum dma_status ioat_tx_status(struct dma_chan *c, dma_cookie_t cookie, struct dma_tx_state *txstate); -void ioat_cleanup_event(struct tasklet_struct *t); +void ioat_cleanup_event(struct work_struct *t); void ioat_timer_event(struct timer_list *t); int ioat_check_space_lock(struct ioatdma_chan *ioat_chan, int num_descs); void ioat_issue_pending(struct dma_chan *chan); diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 9c364e92cb82..7b86ec4d0fa4 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -776,7 +776,7 @@ ioat_init_channel(struct ioatdma_device *ioat_dma, list_add_tail(&ioat_chan->dma_chan.device_node, &dma->channels); ioat_dma->idx[idx] = ioat_chan; timer_setup(&ioat_chan->timer, ioat_timer_event, 0); - tasklet_setup(&ioat_chan->cleanup_task, ioat_cleanup_event); + INIT_WORK(&ioat_chan->cleanup_task, ioat_cleanup_event); } #define IOAT_NUM_SRC_TEST 6 /* must be <= 8 */ diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index 5de8c21d41e7..d852135e8544 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "virt-dma.h" @@ -98,7 +99,7 @@ struct k3_dma_phy { struct k3_dma_dev { struct dma_device slave; void __iomem *base; - struct tasklet_struct task; + struct work_struct work; spinlock_t lock; struct list_head chan_pending; struct k3_dma_phy *phy; @@ -252,7 +253,7 @@ static irqreturn_t k3_dma_int_handler(int irq, void *dev_id) writel_relaxed(err2, d->base + INT_ERR2_RAW); if (irq_chan) - tasklet_schedule(&d->task); + queue_work(system_bh_wq, &d->work); if (irq_chan || err1 || err2) return IRQ_HANDLED; @@ -295,9 +296,9 @@ static int k3_dma_start_txd(struct k3_dma_chan *c) return -EAGAIN; } -static void k3_dma_tasklet(struct tasklet_struct *t) +static void k3_dma_work(struct work_struct *t) { - struct k3_dma_dev *d = from_tasklet(d, t, task); + struct k3_dma_dev *d = from_work(d, t, work); struct k3_dma_phy *p; struct k3_dma_chan *c, *cn; unsigned pch, pch_alloc = 0; @@ -432,8 +433,8 @@ static void k3_dma_issue_pending(struct dma_chan *chan) if (list_empty(&c->node)) { /* if new channel, add chan_pending */ list_add_tail(&c->node, &d->chan_pending); - /* check in tasklet */ - tasklet_schedule(&d->task); + /* check in work */ + queue_work(system_bh_wq, &d->work); dev_dbg(d->slave.dev, "vchan %p: issued\n", &c->vc); } } @@ -956,7 +957,7 @@ static int k3_dma_probe(struct platform_device *op) spin_lock_init(&d->lock); INIT_LIST_HEAD(&d->chan_pending); - tasklet_setup(&d->task, k3_dma_tasklet); + INIT_WORK(&d->work, k3_dma_work); platform_set_drvdata(op, d); dev_info(&op->dev, "initialized\n"); @@ -981,9 +982,9 @@ static void k3_dma_remove(struct platform_device *op) list_for_each_entry_safe(c, cn, &d->slave.channels, vc.chan.device_node) { list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); } - tasklet_kill(&d->task); + cancel_work_sync(&d->work); clk_disable_unprepare(d->clk); } diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c index 529100c5b9f5..cac4e9f2b07b 100644 --- a/drivers/dma/mediatek/mtk-cqdma.c +++ b/drivers/dma/mediatek/mtk-cqdma.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "../virt-dma.h" @@ -94,7 +95,7 @@ struct mtk_cqdma_vdesc { * @base: The mapped register I/O base of this PC * @irq: The IRQ that this PC are using * @refcnt: Track how many VCs are using this PC - * @tasklet: Tasklet for this PC + * @work: Work for this PC * @lock: Lock protect agaisting multiple VCs access PC */ struct mtk_cqdma_pchan { @@ -104,7 +105,7 @@ struct mtk_cqdma_pchan { refcount_t refcnt; - struct tasklet_struct tasklet; + struct work_struct work; /* lock to protect PC */ spinlock_t lock; @@ -355,9 +356,9 @@ static struct mtk_cqdma_vdesc return ret; } -static void mtk_cqdma_tasklet_cb(struct tasklet_struct *t) +static void mtk_cqdma_work_cb(struct work_struct *t) { - struct mtk_cqdma_pchan *pc = from_tasklet(pc, t, tasklet); + struct mtk_cqdma_pchan *pc = from_work(pc, t, work); struct mtk_cqdma_vdesc *cvd = NULL; unsigned long flags; @@ -378,7 +379,7 @@ static void mtk_cqdma_tasklet_cb(struct tasklet_struct *t) kfree(cvd); } - /* re-enable interrupt before leaving tasklet */ + /* re-enable interrupt before leaving work */ enable_irq(pc->irq); } @@ -386,11 +387,11 @@ static irqreturn_t mtk_cqdma_irq(int irq, void *devid) { struct mtk_cqdma_device *cqdma = devid; irqreturn_t ret = IRQ_NONE; - bool schedule_tasklet = false; + bool schedule_work = false; u32 i; /* clear interrupt flags for each PC */ - for (i = 0; i < cqdma->dma_channels; ++i, schedule_tasklet = false) { + for (i = 0; i < cqdma->dma_channels; ++i, schedule_work = false) { spin_lock(&cqdma->pc[i]->lock); if (mtk_dma_read(cqdma->pc[i], MTK_CQDMA_INT_FLAG) & MTK_CQDMA_INT_FLAG_BIT) { @@ -398,17 +399,17 @@ static irqreturn_t mtk_cqdma_irq(int irq, void *devid) mtk_dma_clr(cqdma->pc[i], MTK_CQDMA_INT_FLAG, MTK_CQDMA_INT_FLAG_BIT); - schedule_tasklet = true; + schedule_work = true; ret = IRQ_HANDLED; } spin_unlock(&cqdma->pc[i]->lock); - if (schedule_tasklet) { + if (schedule_work) { /* disable interrupt */ disable_irq_nosync(cqdma->pc[i]->irq); - /* schedule the tasklet to handle the transactions */ - tasklet_schedule(&cqdma->pc[i]->tasklet); + /* schedule the work to handle the transactions */ + queue_work(system_bh_wq, &cqdma->pc[i]->work); } } @@ -472,7 +473,7 @@ static void mtk_cqdma_issue_pending(struct dma_chan *c) unsigned long pc_flags; unsigned long vc_flags; - /* acquire PC's lock before VS's lock for lock dependency in tasklet */ + /* acquire PC's lock before VS's lock for lock dependency in work */ spin_lock_irqsave(&cvc->pc->lock, pc_flags); spin_lock_irqsave(&cvc->vc.lock, vc_flags); @@ -871,9 +872,9 @@ static int mtk_cqdma_probe(struct platform_device *pdev) platform_set_drvdata(pdev, cqdma); - /* initialize tasklet for each PC */ + /* initialize work for each PC */ for (i = 0; i < cqdma->dma_channels; ++i) - tasklet_setup(&cqdma->pc[i]->tasklet, mtk_cqdma_tasklet_cb); + INIT_WORK(&cqdma->pc[i]->work, mtk_cqdma_work_cb); dev_info(&pdev->dev, "MediaTek CQDMA driver registered\n"); @@ -892,12 +893,12 @@ static void mtk_cqdma_remove(struct platform_device *pdev) unsigned long flags; int i; - /* kill VC task */ + /* kill VC work */ for (i = 0; i < cqdma->dma_requests; i++) { vc = &cqdma->vc[i]; list_del(&vc->vc.chan.device_node); - tasklet_kill(&vc->vc.task); + cancel_work_sync(&vc->vc.work); } /* disable interrupt */ @@ -910,7 +911,7 @@ static void mtk_cqdma_remove(struct platform_device *pdev) /* Waits for any pending IRQ handlers to complete */ synchronize_irq(cqdma->pc[i]->irq); - tasklet_kill(&cqdma->pc[i]->tasklet); + cancel_work_sync(&cqdma->pc[i]->work); } /* disable hardware */ diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c index 36ff11e909ea..a70eb9ae25ff 100644 --- a/drivers/dma/mediatek/mtk-hsdma.c +++ b/drivers/dma/mediatek/mtk-hsdma.c @@ -1020,7 +1020,7 @@ static void mtk_hsdma_remove(struct platform_device *pdev) vc = &hsdma->vc[i]; list_del(&vc->vc.chan.device_node); - tasklet_kill(&vc->vc.task); + cancel_work_sync(&vc->vc.work); } /* Disable DMA interrupt */ diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c index 1bdc1500be40..63123ff9d451 100644 --- a/drivers/dma/mediatek/mtk-uart-apdma.c +++ b/drivers/dma/mediatek/mtk-uart-apdma.c @@ -312,7 +312,7 @@ static void mtk_uart_apdma_free_chan_resources(struct dma_chan *chan) free_irq(c->irq, chan); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); vchan_free_chan_resources(&c->vc); @@ -463,7 +463,7 @@ static void mtk_uart_apdma_free(struct mtk_uart_apdmadev *mtkd) struct mtk_chan, vc.chan.device_node); list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.task); } } diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index 136fcaeff8dd..083ca760241d 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -97,7 +98,7 @@ struct mmp_pdma_chan { * is in cyclic mode */ /* channel's basic info */ - struct tasklet_struct tasklet; + struct work_struct work; u32 dcmd; u32 drcmr; u32 dev_addr; @@ -204,7 +205,7 @@ static irqreturn_t mmp_pdma_chan_handler(int irq, void *dev_id) if (clear_chan_irq(phy) != 0) return IRQ_NONE; - tasklet_schedule(&phy->vchan->tasklet); + queue_work(system_bh_wq, &phy->vchan->work); return IRQ_HANDLED; } @@ -861,13 +862,13 @@ static void mmp_pdma_issue_pending(struct dma_chan *dchan) } /* - * dma_do_tasklet + * dma_do_work * Do call back * Start pending list */ -static void dma_do_tasklet(struct tasklet_struct *t) +static void dma_do_work(struct work_struct *t) { - struct mmp_pdma_chan *chan = from_tasklet(chan, t, tasklet); + struct mmp_pdma_chan *chan = from_work(chan, t, work); struct mmp_pdma_desc_sw *desc, *_desc; LIST_HEAD(chain_cleanup); unsigned long flags; @@ -984,7 +985,7 @@ static int mmp_pdma_chan_init(struct mmp_pdma_device *pdev, int idx, int irq) spin_lock_init(&chan->desc_lock); chan->dev = pdev->dev; chan->chan.device = &pdev->device; - tasklet_setup(&chan->tasklet, dma_do_tasklet); + INIT_WORK(&chan->work, dma_do_work); INIT_LIST_HEAD(&chan->chain_pending); INIT_LIST_HEAD(&chan->chain_running); diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index b76fe99e1151..05971f01a1ac 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -102,7 +103,7 @@ struct mmp_tdma_chan { struct device *dev; struct dma_chan chan; struct dma_async_tx_descriptor desc; - struct tasklet_struct tasklet; + struct work_struct work; struct mmp_tdma_desc *desc_arr; dma_addr_t desc_arr_phys; @@ -320,7 +321,7 @@ static irqreturn_t mmp_tdma_chan_handler(int irq, void *dev_id) struct mmp_tdma_chan *tdmac = dev_id; if (mmp_tdma_clear_chan_irq(tdmac) == 0) { - tasklet_schedule(&tdmac->tasklet); + queue_work(system_bh_wq, &tdmac->work); return IRQ_HANDLED; } else return IRQ_NONE; @@ -346,9 +347,9 @@ static irqreturn_t mmp_tdma_int_handler(int irq, void *dev_id) return IRQ_NONE; } -static void dma_do_tasklet(struct tasklet_struct *t) +static void dma_do_work(struct work_struct *t) { - struct mmp_tdma_chan *tdmac = from_tasklet(tdmac, t, tasklet); + struct mmp_tdma_chan *tdmac = from_work(tdmac, t, work); dmaengine_desc_get_callback_invoke(&tdmac->desc, NULL); } @@ -584,7 +585,7 @@ static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev, tdmac->pool = pool; tdmac->status = DMA_COMPLETE; tdev->tdmac[tdmac->idx] = tdmac; - tasklet_setup(&tdmac->tasklet, dma_do_tasklet); + INIT_WORK(&tdmac->work, dma_do_work); /* add the channel to tdma_chan list */ list_add_tail(&tdmac->chan.device_node, diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c index 68c247a46321..88a1388a78e4 100644 --- a/drivers/dma/mpc512x_dma.c +++ b/drivers/dma/mpc512x_dma.c @@ -43,6 +43,7 @@ #include #include +#include #include "dmaengine.h" @@ -214,7 +215,7 @@ struct mpc_dma_chan { struct mpc_dma { struct dma_device dma; - struct tasklet_struct tasklet; + struct work_struct work; struct mpc_dma_chan channels[MPC_DMA_CHANNELS]; struct mpc_dma_regs __iomem *regs; struct mpc_dma_tcd __iomem *tcd; @@ -366,8 +367,8 @@ static irqreturn_t mpc_dma_irq(int irq, void *data) mpc_dma_irq_process(mdma, in_be32(&mdma->regs->dmaintl), in_be32(&mdma->regs->dmaerrl), 0); - /* Schedule tasklet */ - tasklet_schedule(&mdma->tasklet); + /* Schedule work */ + queue_work(system_bh_wq, &mdma->work); return IRQ_HANDLED; } @@ -413,10 +414,10 @@ static void mpc_dma_process_completed(struct mpc_dma *mdma) } } -/* DMA Tasklet */ -static void mpc_dma_tasklet(struct tasklet_struct *t) +/* DMA Work */ +static void mpc_dma_work(struct work_struct *t) { - struct mpc_dma *mdma = from_tasklet(mdma, t, tasklet); + struct mpc_dma *mdma = from_work(mdma, t, work); unsigned long flags; uint es; @@ -1010,7 +1011,7 @@ static int mpc_dma_probe(struct platform_device *op) list_add_tail(&mchan->chan.device_node, &dma->channels); } - tasklet_setup(&mdma->tasklet, mpc_dma_tasklet); + INIT_WORK(&mdma->work, mpc_dma_work); /* * Configure DMA Engine: @@ -1098,7 +1099,7 @@ static void mpc_dma_remove(struct platform_device *op) } free_irq(mdma->irq, mdma); irq_dispose_mapping(mdma->irq); - tasklet_kill(&mdma->tasklet); + cancel_work_sync(&mdma->work); } static const struct of_device_id mpc_dma_match[] = { diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index bcd3b623ac6c..5b8c03a43089 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "dmaengine.h" #include "mv_xor.h" @@ -327,7 +328,7 @@ static void mv_chan_slot_cleanup(struct mv_xor_chan *mv_chan) * some descriptors are still waiting * to be cleaned */ - tasklet_schedule(&mv_chan->irq_tasklet); + queue_work(system_bh_wq, &mv_chan->irq_work); } } } @@ -336,9 +337,9 @@ static void mv_chan_slot_cleanup(struct mv_xor_chan *mv_chan) mv_chan->dmachan.completed_cookie = cookie; } -static void mv_xor_tasklet(struct tasklet_struct *t) +static void mv_xor_work(struct work_struct *t) { - struct mv_xor_chan *chan = from_tasklet(chan, t, irq_tasklet); + struct mv_xor_chan *chan = from_work(chan, t, irq_work); spin_lock(&chan->lock); mv_chan_slot_cleanup(chan); @@ -372,7 +373,7 @@ mv_chan_alloc_slot(struct mv_xor_chan *mv_chan) spin_unlock_bh(&mv_chan->lock); /* try to free some slots if the allocation fails */ - tasklet_schedule(&mv_chan->irq_tasklet); + queue_work(system_bh_wq, &mv_chan->irq_work); return NULL; } @@ -737,7 +738,7 @@ static irqreturn_t mv_xor_interrupt_handler(int irq, void *data) if (intr_cause & XOR_INTR_ERRORS) mv_chan_err_interrupt_handler(chan, intr_cause); - tasklet_schedule(&chan->irq_tasklet); + queue_work(system_bh_wq, &chan->irq_work); mv_chan_clear_eoc_cause(chan); @@ -1097,7 +1098,7 @@ mv_xor_channel_add(struct mv_xor_device *xordev, mv_chan->mmr_base = xordev->xor_base; mv_chan->mmr_high_base = xordev->xor_high_base; - tasklet_setup(&mv_chan->irq_tasklet, mv_xor_tasklet); + INIT_WORK(&mv_chan->irq_work, mv_xor_work); /* clear errors before enabling interrupts */ mv_chan_clear_err_status(mv_chan); diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h index d86086b05b0e..80a19010e6c9 100644 --- a/drivers/dma/mv_xor.h +++ b/drivers/dma/mv_xor.h @@ -10,6 +10,7 @@ #include #include #include +#include #define MV_XOR_POOL_SIZE (MV_XOR_SLOT_SIZE * 3072) #define MV_XOR_SLOT_SIZE 64 @@ -98,7 +99,7 @@ struct mv_xor_device { * @device: parent device * @common: common dmaengine channel object members * @slots_allocated: records the actual size of the descriptor slot pool - * @irq_tasklet: bottom half where mv_xor_slot_cleanup runs + * @irq_work: bottom half where mv_xor_slot_cleanup runs * @op_in_desc: new mode of driver, each op is writen to descriptor. */ struct mv_xor_chan { @@ -118,7 +119,7 @@ struct mv_xor_chan { struct dma_device dmadev; struct dma_chan dmachan; int slots_allocated; - struct tasklet_struct irq_tasklet; + struct work_struct irq_work; int op_in_desc; char dummy_src[MV_XOR_MIN_BYTE_COUNT]; char dummy_dst[MV_XOR_MIN_BYTE_COUNT]; diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c index 97ebc791a30b..bfa683f02d26 100644 --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -139,7 +140,7 @@ struct mv_xor_v2_descriptor { * @reg_clk: reference to the 'reg' clock * @dma_base: memory mapped DMA register base * @glob_base: memory mapped global register base - * @irq_tasklet: tasklet used for IRQ handling call-backs + * @irq_work: work used for IRQ handling call-backs * @free_sw_desc: linked list of free SW descriptors * @dmadev: dma device * @dmachan: dma channel @@ -158,7 +159,7 @@ struct mv_xor_v2_device { void __iomem *glob_base; struct clk *clk; struct clk *reg_clk; - struct tasklet_struct irq_tasklet; + struct work_struct irq_work; struct list_head free_sw_desc; struct dma_device dmadev; struct dma_chan dmachan; @@ -290,8 +291,8 @@ static irqreturn_t mv_xor_v2_interrupt_handler(int irq, void *data) if (!ndescs) return IRQ_NONE; - /* schedule a tasklet to handle descriptors callbacks */ - tasklet_schedule(&xor_dev->irq_tasklet); + /* schedule a work to handle descriptors callbacks */ + queue_work(system_bh_wq, &xor_dev->irq_work); return IRQ_HANDLED; } @@ -346,8 +347,8 @@ mv_xor_v2_prep_sw_desc(struct mv_xor_v2_device *xor_dev) if (list_empty(&xor_dev->free_sw_desc)) { spin_unlock_bh(&xor_dev->lock); - /* schedule tasklet to free some descriptors */ - tasklet_schedule(&xor_dev->irq_tasklet); + /* schedule work to free some descriptors */ + queue_work(system_bh_wq, &xor_dev->irq_work); return NULL; } @@ -553,10 +554,10 @@ int mv_xor_v2_get_pending_params(struct mv_xor_v2_device *xor_dev, /* * handle the descriptors after HW process */ -static void mv_xor_v2_tasklet(struct tasklet_struct *t) +static void mv_xor_v2_work(struct work_struct *t) { - struct mv_xor_v2_device *xor_dev = from_tasklet(xor_dev, t, - irq_tasklet); + struct mv_xor_v2_device *xor_dev = from_work(xor_dev, t, + irq_work); int pending_ptr, num_of_pending, i; struct mv_xor_v2_sw_desc *next_pending_sw_desc = NULL; @@ -760,7 +761,7 @@ static int mv_xor_v2_probe(struct platform_device *pdev) if (ret) goto free_msi_irqs; - tasklet_setup(&xor_dev->irq_tasklet, mv_xor_v2_tasklet); + INIT_WORK(&xor_dev->irq_work, mv_xor_v2_work); xor_dev->desc_size = mv_xor_v2_set_desc_size(xor_dev); @@ -869,7 +870,7 @@ static void mv_xor_v2_remove(struct platform_device *pdev) platform_device_msi_free_irqs_all(&pdev->dev); - tasklet_kill(&xor_dev->irq_tasklet); + cancel_work_sync(&xor_dev->irq_work); } #ifdef CONFIG_OF diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index cfb9962417ef..6131e130dfc6 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -24,6 +24,7 @@ #include #include #include +#include #include @@ -109,7 +110,7 @@ struct mxs_dma_chan { struct mxs_dma_engine *mxs_dma; struct dma_chan chan; struct dma_async_tx_descriptor desc; - struct tasklet_struct tasklet; + struct work_struct work; unsigned int chan_irq; struct mxs_dma_ccw *ccw; dma_addr_t ccw_phys; @@ -300,9 +301,9 @@ static dma_cookie_t mxs_dma_tx_submit(struct dma_async_tx_descriptor *tx) return dma_cookie_assign(tx); } -static void mxs_dma_tasklet(struct tasklet_struct *t) +static void mxs_dma_work(struct work_struct *t) { - struct mxs_dma_chan *mxs_chan = from_tasklet(mxs_chan, t, tasklet); + struct mxs_dma_chan *mxs_chan = from_work(mxs_chan, t, work); dmaengine_desc_get_callback_invoke(&mxs_chan->desc, NULL); } @@ -386,8 +387,8 @@ static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id) dma_cookie_complete(&mxs_chan->desc); } - /* schedule tasklet on this channel */ - tasklet_schedule(&mxs_chan->tasklet); + /* schedule work on this channel */ + queue_work(system_bh_wq, &mxs_chan->work); return IRQ_HANDLED; } @@ -782,7 +783,7 @@ static int mxs_dma_probe(struct platform_device *pdev) mxs_chan->chan.device = &mxs_dma->dma_device; dma_cookie_init(&mxs_chan->chan); - tasklet_setup(&mxs_chan->tasklet, mxs_dma_tasklet); + INIT_WORK(&mxs_chan->work, mxs_dma_work); /* Add the channel to mxs_chan list */ diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index c08916339aa7..49bf42a41c7a 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -18,6 +18,7 @@ #include #include #include +#include #include @@ -174,7 +175,7 @@ struct nbpf_desc_page { /** * struct nbpf_channel - one DMAC channel * @dma_chan: standard dmaengine channel object - * @tasklet: channel specific tasklet used for callbacks + * @work: channel specific work used for callbacks * @base: register address base * @nbpf: DMAC * @name: IRQ name @@ -200,7 +201,7 @@ struct nbpf_desc_page { */ struct nbpf_channel { struct dma_chan dma_chan; - struct tasklet_struct tasklet; + struct work_struct work; void __iomem *base; struct nbpf_device *nbpf; char name[16]; @@ -1112,9 +1113,9 @@ static struct dma_chan *nbpf_of_xlate(struct of_phandle_args *dma_spec, return dchan; } -static void nbpf_chan_tasklet(struct tasklet_struct *t) +static void nbpf_chan_work(struct work_struct *t) { - struct nbpf_channel *chan = from_tasklet(chan, t, tasklet); + struct nbpf_channel *chan = from_work(chan, t, work); struct nbpf_desc *desc, *tmp; struct dmaengine_desc_callback cb; @@ -1215,7 +1216,7 @@ static irqreturn_t nbpf_chan_irq(int irq, void *dev) spin_unlock(&chan->lock); if (bh) - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); return ret; } @@ -1259,7 +1260,7 @@ static int nbpf_chan_probe(struct nbpf_device *nbpf, int n) snprintf(chan->name, sizeof(chan->name), "nbpf %d", n); - tasklet_setup(&chan->tasklet, nbpf_chan_tasklet); + INIT_WORK(&chan->work, nbpf_chan_work); ret = devm_request_irq(dma_dev->dev, chan->irq, nbpf_chan_irq, IRQF_SHARED, chan->name, chan); @@ -1466,7 +1467,7 @@ static void nbpf_remove(struct platform_device *pdev) devm_free_irq(&pdev->dev, chan->irq, chan); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); } of_dma_controller_free(pdev->dev.of_node); diff --git a/drivers/dma/owl-dma.c b/drivers/dma/owl-dma.c index 4e76c4ec2d39..026dd32c5a16 100644 --- a/drivers/dma/owl-dma.c +++ b/drivers/dma/owl-dma.c @@ -1055,7 +1055,7 @@ static inline void owl_dma_free(struct owl_dma *od) list_for_each_entry_safe(vchan, next, &od->dma.channels, vc.chan.device_node) { list_del(&vchan->vc.chan.device_node); - tasklet_kill(&vchan->vc.task); + cancel_work_sync(&vchan->vc.work); } } diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c index c359decc07a3..df9fd33c0740 100644 --- a/drivers/dma/pch_dma.c +++ b/drivers/dma/pch_dma.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -91,7 +92,7 @@ struct pch_dma_chan { struct dma_chan chan; void __iomem *membase; enum dma_transfer_direction dir; - struct tasklet_struct tasklet; + struct work_struct work; unsigned long err_status; spinlock_t lock; @@ -670,14 +671,14 @@ static int pd_device_terminate_all(struct dma_chan *chan) return 0; } -static void pdc_tasklet(struct tasklet_struct *t) +static void pdc_work(struct work_struct *t) { - struct pch_dma_chan *pd_chan = from_tasklet(pd_chan, t, tasklet); + struct pch_dma_chan *pd_chan = from_work(pd_chan, t, work); unsigned long flags; if (!pdc_is_idle(pd_chan)) { dev_err(chan2dev(&pd_chan->chan), - "BUG: handle non-idle channel in tasklet\n"); + "BUG: handle non-idle channel in work\n"); return; } @@ -712,7 +713,7 @@ static irqreturn_t pd_irq(int irq, void *devid) if (sts0 & DMA_STATUS0_ERR(i)) set_bit(0, &pd_chan->err_status); - tasklet_schedule(&pd_chan->tasklet); + queue_work(system_bh_wq, &pd_chan->work); ret0 = IRQ_HANDLED; } } else { @@ -720,7 +721,7 @@ static irqreturn_t pd_irq(int irq, void *devid) if (sts2 & DMA_STATUS2_ERR(i)) set_bit(0, &pd_chan->err_status); - tasklet_schedule(&pd_chan->tasklet); + queue_work(system_bh_wq, &pd_chan->work); ret2 = IRQ_HANDLED; } } @@ -882,7 +883,7 @@ static int pch_dma_probe(struct pci_dev *pdev, INIT_LIST_HEAD(&pd_chan->queue); INIT_LIST_HEAD(&pd_chan->free_list); - tasklet_setup(&pd_chan->tasklet, pdc_tasklet); + INIT_WORK(&pd_chan->work, pdc_work); list_add_tail(&pd_chan->chan.device_node, &pd->dma.channels); } @@ -935,7 +936,7 @@ static void pch_dma_remove(struct pci_dev *pdev) device_node) { pd_chan = to_pd_chan(chan); - tasklet_kill(&pd_chan->tasklet); + cancel_work_sync(&pd_chan->work); } dma_pool_destroy(pd->pool); diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 5f6d7f1e095f..74ee0dfb638a 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -26,6 +26,7 @@ #include #include #include +#include #include "dmaengine.h" #define PL330_MAX_CHAN 8 @@ -360,7 +361,7 @@ struct _pl330_req { struct dma_pl330_desc *desc; }; -/* ToBeDone for tasklet */ +/* ToBeDone for work */ struct _pl330_tbd { bool reset_dmac; bool reset_mngr; @@ -418,7 +419,7 @@ enum desc_status { struct dma_pl330_chan { /* Schedule desc completion */ - struct tasklet_struct task; + struct work_struct work; /* DMA-Engine Channel */ struct dma_chan chan; @@ -490,7 +491,7 @@ struct pl330_dmac { /* Pointer to the MANAGER thread */ struct pl330_thread *manager; /* To handle bad news in interrupt */ - struct tasklet_struct tasks; + struct work_struct tasks; struct _pl330_tbd dmac_tbd; /* State of DMAC operation */ enum pl330_dmac_state state; @@ -1577,12 +1578,12 @@ static void dma_pl330_rqcb(struct dma_pl330_desc *desc, enum pl330_op_err err) spin_unlock_irqrestore(&pch->lock, flags); - tasklet_schedule(&pch->task); + queue_work(system_bh_wq, &pch->work); } -static void pl330_dotask(struct tasklet_struct *t) +static void pl330_dotask(struct work_struct *t) { - struct pl330_dmac *pl330 = from_tasklet(pl330, t, tasks); + struct pl330_dmac *pl330 = from_work(pl330, t, tasks); unsigned long flags; int i; @@ -1735,7 +1736,7 @@ static int pl330_update(struct pl330_dmac *pl330) || pl330->dmac_tbd.reset_mngr || pl330->dmac_tbd.reset_chan) { ret = 1; - tasklet_schedule(&pl330->tasks); + queue_work(system_bh_wq, &pl330->tasks); } return ret; @@ -1986,7 +1987,7 @@ static int pl330_add(struct pl330_dmac *pl330) return ret; } - tasklet_setup(&pl330->tasks, pl330_dotask); + INIT_WORK(&pl330->tasks, pl330_dotask); pl330->state = INIT; @@ -2014,7 +2015,7 @@ static void pl330_del(struct pl330_dmac *pl330) { pl330->state = UNINIT; - tasklet_kill(&pl330->tasks); + cancel_work_sync(&pl330->tasks); /* Free DMAC resources */ dmac_free_threads(pl330); @@ -2064,14 +2065,14 @@ static inline void fill_queue(struct dma_pl330_chan *pch) desc->status = DONE; dev_err(pch->dmac->ddma.dev, "%s:%d Bad Desc(%d)\n", __func__, __LINE__, desc->txd.cookie); - tasklet_schedule(&pch->task); + queue_work(system_bh_wq, &pch->work); } } } -static void pl330_tasklet(struct tasklet_struct *t) +static void pl330_work(struct work_struct *t) { - struct dma_pl330_chan *pch = from_tasklet(pch, t, task); + struct dma_pl330_chan *pch = from_work(pch, t, work); struct dma_pl330_desc *desc, *_dt; unsigned long flags; bool power_down = false; @@ -2179,7 +2180,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan) return -ENOMEM; } - tasklet_setup(&pch->task, pl330_tasklet); + INIT_WORK(&pch->work, pl330_work); spin_unlock_irqrestore(&pl330->lock, flags); @@ -2362,7 +2363,7 @@ static void pl330_free_chan_resources(struct dma_chan *chan) struct pl330_dmac *pl330 = pch->dmac; unsigned long flags; - tasklet_kill(&pch->task); + cancel_work_sync(&pch->work); pm_runtime_get_sync(pch->dmac->ddma.dev); spin_lock_irqsave(&pl330->lock, flags); @@ -2499,7 +2500,7 @@ static void pl330_issue_pending(struct dma_chan *chan) list_splice_tail_init(&pch->submitted_list, &pch->work_list); spin_unlock_irqrestore(&pch->lock, flags); - pl330_tasklet(&pch->task); + pl330_work(&pch->work); } /* diff --git a/drivers/dma/plx_dma.c b/drivers/dma/plx_dma.c index 34b6416c3287..07e185fb8d2c 100644 --- a/drivers/dma/plx_dma.c +++ b/drivers/dma/plx_dma.c @@ -13,6 +13,7 @@ #include #include #include +#include MODULE_DESCRIPTION("PLX ExpressLane PEX PCI Switch DMA Engine"); MODULE_VERSION("0.1"); @@ -105,7 +106,7 @@ struct plx_dma_dev { struct dma_chan dma_chan; struct pci_dev __rcu *pdev; void __iomem *bar; - struct tasklet_struct desc_task; + struct work_struct desc_task; spinlock_t ring_lock; bool ring_active; @@ -241,9 +242,9 @@ static void plx_dma_stop(struct plx_dma_dev *plxdev) rcu_read_unlock(); } -static void plx_dma_desc_task(struct tasklet_struct *t) +static void plx_dma_desc_task(struct work_struct *t) { - struct plx_dma_dev *plxdev = from_tasklet(plxdev, t, desc_task); + struct plx_dma_dev *plxdev = from_work(plxdev, t, desc_task); plx_dma_process_desc(plxdev); } @@ -366,7 +367,7 @@ static irqreturn_t plx_dma_isr(int irq, void *devid) return IRQ_NONE; if (status & PLX_REG_INTR_STATUS_DESC_DONE && plxdev->ring_active) - tasklet_schedule(&plxdev->desc_task); + queue_work(system_bh_wq, &plxdev->desc_task); writew(status, plxdev->bar + PLX_REG_INTR_STATUS); @@ -472,7 +473,7 @@ static void plx_dma_free_chan_resources(struct dma_chan *chan) if (irq > 0) synchronize_irq(irq); - tasklet_kill(&plxdev->desc_task); + cancel_work_sync(&plxdev->desc_task); plx_dma_abort_desc(plxdev); @@ -511,7 +512,7 @@ static int plx_dma_create(struct pci_dev *pdev) goto free_plx; spin_lock_init(&plxdev->ring_lock); - tasklet_setup(&plxdev->desc_task, plx_dma_desc_task); + INIT_WORK(&plxdev->desc_task, plx_dma_desc_task); RCU_INIT_POINTER(plxdev->pdev, pdev); plxdev->bar = pcim_iomap_table(pdev)[0]; diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index bbb60a970dab..a9e1c0e43fed 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include "adma.h" @@ -1656,11 +1657,11 @@ static void __ppc440spe_adma_slot_cleanup(struct ppc440spe_adma_chan *chan) } /** - * ppc440spe_adma_tasklet - clean up watch-dog initiator + * ppc440spe_adma_work - clean up watch-dog initiator */ -static void ppc440spe_adma_tasklet(struct tasklet_struct *t) +static void ppc440spe_adma_work(struct work_struct *t) { - struct ppc440spe_adma_chan *chan = from_tasklet(chan, t, irq_tasklet); + struct ppc440spe_adma_chan *chan = from_work(chan, t, irq_work); spin_lock_nested(&chan->lock, SINGLE_DEPTH_NESTING); __ppc440spe_adma_slot_cleanup(chan); @@ -1754,7 +1755,7 @@ static struct ppc440spe_adma_desc_slot *ppc440spe_adma_alloc_slots( goto retry; /* try to free some slots if the allocation fails */ - tasklet_schedule(&chan->irq_tasklet); + queue_work(system_bh_wq, &chan->irq_work); return NULL; } @@ -3596,7 +3597,7 @@ static irqreturn_t ppc440spe_adma_eot_handler(int irq, void *data) dev_dbg(chan->device->common.dev, "ppc440spe adma%d: %s\n", chan->device->id, __func__); - tasklet_schedule(&chan->irq_tasklet); + queue_work(system_bh_wq, &chan->irq_work); ppc440spe_adma_device_clear_eot_status(chan); return IRQ_HANDLED; @@ -3613,7 +3614,7 @@ static irqreturn_t ppc440spe_adma_err_handler(int irq, void *data) dev_dbg(chan->device->common.dev, "ppc440spe adma%d: %s\n", chan->device->id, __func__); - tasklet_schedule(&chan->irq_tasklet); + queue_work(system_bh_wq, &chan->irq_work); ppc440spe_adma_device_clear_eot_status(chan); return IRQ_HANDLED; @@ -4138,7 +4139,7 @@ static int ppc440spe_adma_probe(struct platform_device *ofdev) chan->common.device = &adev->common; dma_cookie_init(&chan->common); list_add_tail(&chan->common.device_node, &adev->common.channels); - tasklet_setup(&chan->irq_tasklet, ppc440spe_adma_tasklet); + INIT_WORK(&chan->irq_work, ppc440spe_adma_work); /* allocate and map helper pages for async validation or * async_mult/async_sum_product operations on DMA0/1. @@ -4248,7 +4249,7 @@ static void ppc440spe_adma_remove(struct platform_device *ofdev) device_node) { ppc440spe_chan = to_ppc440spe_adma_chan(chan); ppc440spe_adma_release_irqs(adev, ppc440spe_chan); - tasklet_kill(&ppc440spe_chan->irq_tasklet); + cancel_work_sync(&ppc440spe_chan->irq_work); if (adev->id != PPC440SPE_XOR_ID) { dma_unmap_page(&ofdev->dev, ppc440spe_chan->pdest, PAGE_SIZE, DMA_BIDIRECTIONAL); diff --git a/drivers/dma/ppc4xx/adma.h b/drivers/dma/ppc4xx/adma.h index f8a5d7c1fb40..e3918cfcc5ae 100644 --- a/drivers/dma/ppc4xx/adma.h +++ b/drivers/dma/ppc4xx/adma.h @@ -9,6 +9,7 @@ #define _PPC440SPE_ADMA_H #include +#include #include "dma.h" #include "xor.h" @@ -80,7 +81,7 @@ struct ppc440spe_adma_device { * @pending: allows batching of hardware operations * @slots_allocated: records the actual size of the descriptor slot pool * @hw_chain_inited: h/w descriptor chain initialization flag - * @irq_tasklet: bottom half where ppc440spe_adma_slot_cleanup runs + * @irq_work: bottom half where ppc440spe_adma_slot_cleanup runs * @needs_unmap: if buffers should not be unmapped upon final processing * @pdest_page: P destination page for async validate operation * @qdest_page: Q destination page for async validate operation @@ -97,7 +98,7 @@ struct ppc440spe_adma_chan { int pending; int slots_allocated; int hw_chain_inited; - struct tasklet_struct irq_tasklet; + struct work_struct irq_work; u8 needs_unmap; struct page *pdest_page; struct page *qdest_page; diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 31f8da810c05..174c2fee1fcc 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -1218,7 +1218,7 @@ static void pxad_free_channels(struct dma_device *dmadev) list_for_each_entry_safe(c, cn, &dmadev->channels, vc.chan.device_node) { list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.task); } } diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 5e7d332731e0..71e43150793a 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -41,6 +41,7 @@ #include #include #include +#include #include "../dmaengine.h" #include "../virt-dma.h" @@ -396,8 +397,8 @@ struct bam_device { struct clk *bamclk; int irq; - /* dma start transaction tasklet */ - struct tasklet_struct task; + /* dma start transaction work */ + struct work_struct work; }; /** @@ -875,7 +876,7 @@ static u32 process_channel_irqs(struct bam_device *bdev) /* * if complete, process cookie. Otherwise * push back to front of desc_issued so that - * it gets restarted by the tasklet + * it gets restarted by the work */ if (!async_desc->num_desc) { vchan_cookie_complete(&async_desc->vd); @@ -907,9 +908,9 @@ static irqreturn_t bam_dma_irq(int irq, void *data) srcs |= process_channel_irqs(bdev); - /* kick off tasklet to start next dma transfer */ + /* kick off work to start next dma transfer */ if (srcs & P_IRQ) - tasklet_schedule(&bdev->task); + queue_work(system_bh_wq, &bdev->work); ret = pm_runtime_get_sync(bdev->dev); if (ret < 0) @@ -1107,14 +1108,14 @@ static void bam_start_dma(struct bam_chan *bchan) } /** - * dma_tasklet - DMA IRQ tasklet - * @t: tasklet argument (bam controller structure) + * dma_work - DMA IRQ work + * @t: work argument (bam controller structure) * * Sets up next DMA operation and then processes all completed transactions */ -static void dma_tasklet(struct tasklet_struct *t) +static void dma_work(struct work_struct *t) { - struct bam_device *bdev = from_tasklet(bdev, t, task); + struct bam_device *bdev = from_work(bdev, t, work); struct bam_chan *bchan; unsigned long flags; unsigned int i; @@ -1135,7 +1136,7 @@ static void dma_tasklet(struct tasklet_struct *t) * bam_issue_pending - starts pending transactions * @chan: dma channel * - * Calls tasklet directly which in turn starts any pending transactions + * Calls work directly which in turn starts any pending transactions */ static void bam_issue_pending(struct dma_chan *chan) { @@ -1302,14 +1303,14 @@ static int bam_dma_probe(struct platform_device *pdev) if (ret) goto err_disable_clk; - tasklet_setup(&bdev->task, dma_tasklet); + INIT_WORK(&bdev->work, dma_work); bdev->channels = devm_kcalloc(bdev->dev, bdev->num_channels, sizeof(*bdev->channels), GFP_KERNEL); if (!bdev->channels) { ret = -ENOMEM; - goto err_tasklet_kill; + goto err_work_kill; } /* allocate and initialize channels */ @@ -1377,9 +1378,9 @@ static int bam_dma_probe(struct platform_device *pdev) dma_async_device_unregister(&bdev->common); err_bam_channel_exit: for (i = 0; i < bdev->num_channels; i++) - tasklet_kill(&bdev->channels[i].vc.task); -err_tasklet_kill: - tasklet_kill(&bdev->task); + cancel_work_sync(&bdev->channels[i].vc.work); +err_work_kill: + cancel_work_sync(&bdev->work); err_disable_clk: clk_disable_unprepare(bdev->bamclk); @@ -1403,7 +1404,7 @@ static void bam_dma_remove(struct platform_device *pdev) for (i = 0; i < bdev->num_channels; i++) { bam_dma_terminate_all(&bdev->channels[i].vc.chan); - tasklet_kill(&bdev->channels[i].vc.task); + cancel_work_sync(&bdev->channels[i].vc.work); if (!bdev->channels[i].fifo_virt) continue; @@ -1413,7 +1414,7 @@ static void bam_dma_remove(struct platform_device *pdev) bdev->channels[i].fifo_phys); } - tasklet_kill(&bdev->task); + cancel_work_sync(&bdev->work); clk_disable_unprepare(bdev->bamclk); } diff --git a/drivers/dma/qcom/gpi.c b/drivers/dma/qcom/gpi.c index 1c93864e0e4d..a777cfc799fd 100644 --- a/drivers/dma/qcom/gpi.c +++ b/drivers/dma/qcom/gpi.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "../dmaengine.h" #include "../virt-dma.h" @@ -515,7 +516,7 @@ struct gpii { enum gpi_pm_state pm_state; rwlock_t pm_lock; struct gpi_ring ev_ring; - struct tasklet_struct ev_task; /* event processing tasklet */ + struct work_struct ev_task; /* event processing work */ struct completion cmd_completion; enum gpi_cmd gpi_cmd; u32 cntxt_type_irq_msk; @@ -755,7 +756,7 @@ static void gpi_process_ieob(struct gpii *gpii) gpi_write_reg(gpii, gpii->ieob_clr_reg, BIT(0)); gpi_config_interrupts(gpii, MASK_IEOB_SETTINGS, 0); - tasklet_hi_schedule(&gpii->ev_task); + queue_work(system_bh_highpri_wq, &gpii->ev_task); } /* process channel control interrupt */ @@ -1145,10 +1146,10 @@ static void gpi_process_events(struct gpii *gpii) } while (rp != ev_ring->rp); } -/* processing events using tasklet */ -static void gpi_ev_tasklet(unsigned long data) +/* processing events using work */ +static void gpi_ev_work(struct work_struct *t) { - struct gpii *gpii = (struct gpii *)data; + struct gpii *gpii = from_work(gpii, t, ev_task); read_lock(&gpii->pm_lock); if (!REG_ACCESS_VALID(gpii->pm_state)) { @@ -1565,7 +1566,7 @@ static int gpi_pause(struct dma_chan *chan) disable_irq(gpii->irq); /* Wait for threads to complete out */ - tasklet_kill(&gpii->ev_task); + cancel_work_sync(&gpii->ev_task); write_lock_irq(&gpii->pm_lock); gpii->pm_state = PAUSE_STATE; @@ -2018,7 +2019,7 @@ static void gpi_free_chan_resources(struct dma_chan *chan) write_unlock_irq(&gpii->pm_lock); /* wait for threads to complete out */ - tasklet_kill(&gpii->ev_task); + cancel_work_sync(&gpii->ev_task); /* send command to de allocate event ring */ if (cur_state == ACTIVE_STATE) @@ -2237,8 +2238,7 @@ static int gpi_probe(struct platform_device *pdev) } mutex_init(&gpii->ctrl_lock); rwlock_init(&gpii->pm_lock); - tasklet_init(&gpii->ev_task, gpi_ev_tasklet, - (unsigned long)gpii); + INIT_WORK(&gpii->ev_task, gpi_ev_work); init_completion(&gpii->cmd_completion); gpii->gpii_id = i; gpii->regs = gpi_dev->ee_base; diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c index 202ac95227cb..cf540ffbb7b7 100644 --- a/drivers/dma/qcom/hidma.c +++ b/drivers/dma/qcom/hidma.c @@ -58,6 +58,7 @@ #include #include #include +#include #include "../dmaengine.h" #include "hidma.h" @@ -217,9 +218,9 @@ static int hidma_chan_init(struct hidma_dev *dmadev, u32 dma_sig) return 0; } -static void hidma_issue_task(struct tasklet_struct *t) +static void hidma_issue_task(struct work_struct *t) { - struct hidma_dev *dmadev = from_tasklet(dmadev, t, task); + struct hidma_dev *dmadev = from_work(dmadev, t, work); pm_runtime_get_sync(dmadev->ddev.dev); hidma_ll_start(dmadev->lldev); @@ -250,7 +251,7 @@ static void hidma_issue_pending(struct dma_chan *dmach) /* PM will be released in hidma_callback function. */ status = pm_runtime_get(dmadev->ddev.dev); if (status < 0) - tasklet_schedule(&dmadev->task); + queue_work(system_bh_wq, &dmadev->work); else hidma_ll_start(dmadev->lldev); } @@ -879,7 +880,7 @@ static int hidma_probe(struct platform_device *pdev) goto uninit; dmadev->irq = chirq; - tasklet_setup(&dmadev->task, hidma_issue_task); + INIT_WORK(&dmadev->work, hidma_issue_task); hidma_debug_init(dmadev); hidma_sysfs_init(dmadev); dev_info(&pdev->dev, "HI-DMA engine driver registration complete\n"); @@ -926,7 +927,7 @@ static void hidma_remove(struct platform_device *pdev) else hidma_free_msis(dmadev); - tasklet_kill(&dmadev->task); + cancel_work_sync(&dmadev->work); hidma_sysfs_uninit(dmadev); hidma_debug_uninit(dmadev); hidma_ll_uninit(dmadev->lldev); diff --git a/drivers/dma/qcom/hidma.h b/drivers/dma/qcom/hidma.h index f212466744f3..a6140c9bef76 100644 --- a/drivers/dma/qcom/hidma.h +++ b/drivers/dma/qcom/hidma.h @@ -11,6 +11,7 @@ #include #include #include +#include #define HIDMA_TRE_SIZE 32 /* each TRE is 32 bytes */ #define HIDMA_TRE_CFG_IDX 0 @@ -69,7 +70,7 @@ struct hidma_lldev { u32 evre_processed_off; /* last processed EVRE */ u32 tre_write_offset; /* TRE write location */ - struct tasklet_struct task; /* task delivering notifications */ + struct work_struct work; /* work delivering notifications */ DECLARE_KFIFO_PTR(handoff_fifo, struct hidma_tre *); /* pending TREs FIFO */ }; @@ -129,7 +130,7 @@ struct hidma_dev { struct device_attribute *chid_attrs; /* Task delivering issue_pending */ - struct tasklet_struct task; + struct work_struct work; }; int hidma_ll_request(struct hidma_lldev *llhndl, u32 dev_id, diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index 53244e0e34a3..ebe037bb85e5 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "hidma.h" @@ -173,9 +174,9 @@ int hidma_ll_request(struct hidma_lldev *lldev, u32 sig, const char *dev_name, /* * Multiple TREs may be queued and waiting in the pending queue. */ -static void hidma_ll_tre_complete(struct tasklet_struct *t) +static void hidma_ll_tre_complete(struct work_struct *t) { - struct hidma_lldev *lldev = from_tasklet(lldev, t, task); + struct hidma_lldev *lldev = from_work(lldev, t, work); struct hidma_tre *tre; while (kfifo_out(&lldev->handoff_fifo, &tre, 1)) { @@ -223,7 +224,7 @@ static int hidma_post_completed(struct hidma_lldev *lldev, u8 err_info, tre->queued = 0; kfifo_put(&lldev->handoff_fifo, tre); - tasklet_schedule(&lldev->task); + queue_work(system_bh_wq, &lldev->work); return 0; } @@ -792,7 +793,7 @@ struct hidma_lldev *hidma_ll_init(struct device *dev, u32 nr_tres, return NULL; spin_lock_init(&lldev->lock); - tasklet_setup(&lldev->task, hidma_ll_tre_complete); + INIT_WORK(&lldev->work, hidma_ll_tre_complete); lldev->initialized = 1; writel(ENABLE_IRQS, lldev->evca + HIDMA_EVCA_IRQ_EN_REG); return lldev; @@ -813,7 +814,7 @@ int hidma_ll_uninit(struct hidma_lldev *lldev) lldev->initialized = 0; required_bytes = sizeof(struct hidma_tre) * lldev->nr_tres; - tasklet_kill(&lldev->task); + cancel_work_sync(&lldev->work); memset(lldev->trepool, 0, required_bytes); lldev->trepool = NULL; atomic_set(&lldev->pending_tre_count, 0); diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c index 53f4273b657c..0cc3b77899d2 100644 --- a/drivers/dma/qcom/qcom_adm.c +++ b/drivers/dma/qcom/qcom_adm.c @@ -919,7 +919,7 @@ static void adm_dma_remove(struct platform_device *pdev) /* mask IRQs for this channel/EE pair */ writel(0, adev->regs + ADM_CH_RSLT_CONF(achan->id, adev->ee)); - tasklet_kill(&adev->channels[i].vc.task); + cancel_work_sync(&adev->channels[i].vc.work); adm_terminate_all(&adev->channels[i].vc.chan); } diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index 01e656c69e6c..888fe2311572 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "virt-dma.h" @@ -118,7 +119,7 @@ struct sa11x0_dma_dev { struct dma_device slave; void __iomem *base; spinlock_t lock; - struct tasklet_struct task; + struct work_struct work; struct list_head chan_pending; struct sa11x0_dma_phy phy[NR_PHY_CHAN]; }; @@ -232,7 +233,7 @@ static void noinline sa11x0_dma_complete(struct sa11x0_dma_phy *p, p->txd_done = p->txd_load; if (!p->txd_done) - tasklet_schedule(&p->dev->task); + queue_work(system_bh_wq, &p->dev->work); } else { if ((p->sg_done % txd->period) == 0) vchan_cyclic_callback(&txd->vd); @@ -323,14 +324,14 @@ static void sa11x0_dma_start_txd(struct sa11x0_dma_chan *c) } } -static void sa11x0_dma_tasklet(struct tasklet_struct *t) +static void sa11x0_dma_work(struct work_struct *t) { - struct sa11x0_dma_dev *d = from_tasklet(d, t, task); + struct sa11x0_dma_dev *d = from_work(d, t, work); struct sa11x0_dma_phy *p; struct sa11x0_dma_chan *c; unsigned pch, pch_alloc = 0; - dev_dbg(d->slave.dev, "tasklet enter\n"); + dev_dbg(d->slave.dev, "work enter\n"); list_for_each_entry(c, &d->slave.channels, vc.chan.device_node) { spin_lock_irq(&c->vc.lock); @@ -381,7 +382,7 @@ static void sa11x0_dma_tasklet(struct tasklet_struct *t) } } - dev_dbg(d->slave.dev, "tasklet exit\n"); + dev_dbg(d->slave.dev, "work exit\n"); } @@ -495,7 +496,7 @@ static enum dma_status sa11x0_dma_tx_status(struct dma_chan *chan, /* * Move pending txds to the issued list, and re-init pending list. * If not already pending, add this channel to the list of pending - * channels and trigger the tasklet to run. + * channels and trigger the work to run. */ static void sa11x0_dma_issue_pending(struct dma_chan *chan) { @@ -509,7 +510,7 @@ static void sa11x0_dma_issue_pending(struct dma_chan *chan) spin_lock(&d->lock); if (list_empty(&c->node)) { list_add_tail(&c->node, &d->chan_pending); - tasklet_schedule(&d->task); + queue_work(system_bh_wq, &d->work); dev_dbg(d->slave.dev, "vchan %p: issued\n", &c->vc); } spin_unlock(&d->lock); @@ -784,7 +785,7 @@ static int sa11x0_dma_device_terminate_all(struct dma_chan *chan) spin_lock(&d->lock); p->vchan = NULL; spin_unlock(&d->lock); - tasklet_schedule(&d->task); + queue_work(system_bh_wq, &d->work); } spin_unlock_irqrestore(&c->vc.lock, flags); vchan_dma_desc_free_list(&c->vc, &head); @@ -893,7 +894,7 @@ static void sa11x0_dma_free_channels(struct dma_device *dmadev) list_for_each_entry_safe(c, cn, &dmadev->channels, vc.chan.device_node) { list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); kfree(c); } } @@ -928,7 +929,7 @@ static int sa11x0_dma_probe(struct platform_device *pdev) goto err_ioremap; } - tasklet_setup(&d->task, sa11x0_dma_tasklet); + INIT_WORK(&d->work, sa11x0_dma_work); for (i = 0; i < NR_PHY_CHAN; i++) { struct sa11x0_dma_phy *p = &d->phy[i]; @@ -976,7 +977,7 @@ static int sa11x0_dma_probe(struct platform_device *pdev) for (i = 0; i < NR_PHY_CHAN; i++) sa11x0_dma_free_irq(pdev, i, &d->phy[i]); err_irq: - tasklet_kill(&d->task); + cancel_work_sync(&d->work); iounmap(d->base); err_ioremap: kfree(d); @@ -994,7 +995,7 @@ static void sa11x0_dma_remove(struct platform_device *pdev) sa11x0_dma_free_channels(&d->slave); for (pch = 0; pch < NR_PHY_CHAN; pch++) sa11x0_dma_free_irq(pdev, pch, &d->phy[pch]); - tasklet_kill(&d->task); + cancel_work_sync(&d->work); iounmap(d->base); kfree(d); } diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c index 428473611115..eb865f326f1c 100644 --- a/drivers/dma/sf-pdma/sf-pdma.c +++ b/drivers/dma/sf-pdma/sf-pdma.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "sf-pdma.h" @@ -295,9 +296,9 @@ static void sf_pdma_free_desc(struct virt_dma_desc *vdesc) kfree(desc); } -static void sf_pdma_donebh_tasklet(struct tasklet_struct *t) +static void sf_pdma_donebh_work(struct work_struct *t) { - struct sf_pdma_chan *chan = from_tasklet(chan, t, done_tasklet); + struct sf_pdma_chan *chan = from_work(chan, t, done_work); unsigned long flags; spin_lock_irqsave(&chan->lock, flags); @@ -319,9 +320,9 @@ static void sf_pdma_donebh_tasklet(struct tasklet_struct *t) spin_unlock_irqrestore(&chan->vchan.lock, flags); } -static void sf_pdma_errbh_tasklet(struct tasklet_struct *t) +static void sf_pdma_errbh_work(struct work_struct *t) { - struct sf_pdma_chan *chan = from_tasklet(chan, t, err_tasklet); + struct sf_pdma_chan *chan = from_work(chan, t, err_work); struct sf_pdma_desc *desc = chan->desc; unsigned long flags; @@ -352,7 +353,7 @@ static irqreturn_t sf_pdma_done_isr(int irq, void *dev_id) residue = readq(regs->residue); if (!residue) { - tasklet_hi_schedule(&chan->done_tasklet); + queue_work(system_bh_highpri_wq, &chan->done_work); } else { /* submit next trascatioin if possible */ struct sf_pdma_desc *desc = chan->desc; @@ -378,7 +379,7 @@ static irqreturn_t sf_pdma_err_isr(int irq, void *dev_id) writel((readl(regs->ctrl)) & ~PDMA_ERR_STATUS_MASK, regs->ctrl); spin_unlock(&chan->lock); - tasklet_schedule(&chan->err_tasklet); + queue_work(system_bh_wq, &chan->err_work); return IRQ_HANDLED; } @@ -488,8 +489,8 @@ static void sf_pdma_setup_chans(struct sf_pdma *pdma) writel(PDMA_CLEAR_CTRL, chan->regs.ctrl); - tasklet_setup(&chan->done_tasklet, sf_pdma_donebh_tasklet); - tasklet_setup(&chan->err_tasklet, sf_pdma_errbh_tasklet); + INIT_WORK(&chan->done_work, sf_pdma_donebh_work); + INIT_WORK(&chan->err_work, sf_pdma_errbh_work); } } @@ -603,9 +604,9 @@ static void sf_pdma_remove(struct platform_device *pdev) devm_free_irq(&pdev->dev, ch->txirq, ch); devm_free_irq(&pdev->dev, ch->errirq, ch); list_del(&ch->vchan.chan.device_node); - tasklet_kill(&ch->vchan.task); - tasklet_kill(&ch->done_tasklet); - tasklet_kill(&ch->err_tasklet); + cancel_work_sync(&ch->vchan.work); + cancel_work_sync(&ch->done_work); + cancel_work_sync(&ch->err_work); } if (pdev->dev.of_node) diff --git a/drivers/dma/sf-pdma/sf-pdma.h b/drivers/dma/sf-pdma/sf-pdma.h index 215e07183d7e..87c6dd06800a 100644 --- a/drivers/dma/sf-pdma/sf-pdma.h +++ b/drivers/dma/sf-pdma/sf-pdma.h @@ -18,6 +18,7 @@ #include #include +#include #include "../dmaengine.h" #include "../virt-dma.h" @@ -99,8 +100,8 @@ struct sf_pdma_chan { u32 attr; dma_addr_t dma_dev_addr; u32 dma_dev_size; - struct tasklet_struct done_tasklet; - struct tasklet_struct err_tasklet; + struct work_struct done_work; + struct work_struct err_work; struct pdma_regs regs; spinlock_t lock; /* protect chan data */ bool xfer_err; diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c index 3f54ff37c5e0..fb4b6b31cc22 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -1253,7 +1253,7 @@ static void sprd_dma_remove(struct platform_device *pdev) list_for_each_entry_safe(c, cn, &sdev->dma_dev.channels, vc.chan.device_node) { list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); } of_dma_controller_free(pdev->dev.of_node); diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c index 8880b5e336f8..5892632654e7 100644 --- a/drivers/dma/st_fdma.c +++ b/drivers/dma/st_fdma.c @@ -733,7 +733,7 @@ static void st_fdma_free(struct st_fdma_dev *fdev) for (i = 0; i < fdev->nr_channels; i++) { fchan = &fdev->chans[i]; list_del(&fchan->vchan.chan.device_node); - tasklet_kill(&fchan->vchan.task); + cancel_work_sync(&fchan->vchan.work); } } diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 2c489299148e..c2b33351c1c9 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "dmaengine.h" #include "ste_dma40.h" @@ -456,12 +457,12 @@ struct d40_base; * @lock: A spinlock to protect this struct. * @log_num: The logical number, if any of this channel. * @pending_tx: The number of pending transfers. Used between interrupt handler - * and tasklet. + * and work. * @busy: Set to true when transfer is ongoing on this channel. * @phy_chan: Pointer to physical channel which this instance runs on. If this * point is NULL, then the channel is not allocated. * @chan: DMA engine handle. - * @tasklet: Tasklet that gets scheduled from interrupt context to complete a + * @work: Work that gets scheduled from interrupt context to complete a * transfer and call client callback. * @client: Cliented owned descriptor list. * @pending_queue: Submitted jobs, to be issued by issue_pending() @@ -489,7 +490,7 @@ struct d40_chan { bool busy; struct d40_phy_res *phy_chan; struct dma_chan chan; - struct tasklet_struct tasklet; + struct work_struct work; struct list_head client; struct list_head pending_queue; struct list_head active; @@ -1590,13 +1591,13 @@ static void dma_tc_handle(struct d40_chan *d40c) } d40c->pending_tx++; - tasklet_schedule(&d40c->tasklet); + queue_work(system_bh_wq, &d40c->work); } -static void dma_tasklet(struct tasklet_struct *t) +static void dma_work(struct work_struct *t) { - struct d40_chan *d40c = from_tasklet(d40c, t, tasklet); + struct d40_chan *d40c = from_work(d40c, t, work); struct d40_desc *d40d; unsigned long flags; bool callback_active; @@ -1644,7 +1645,7 @@ static void dma_tasklet(struct tasklet_struct *t) d40c->pending_tx--; if (d40c->pending_tx) - tasklet_schedule(&d40c->tasklet); + queue_work(system_bh_wq, &d40c->work); spin_unlock_irqrestore(&d40c->lock, flags); @@ -2825,7 +2826,7 @@ static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma, INIT_LIST_HEAD(&d40c->client); INIT_LIST_HEAD(&d40c->prepare_queue); - tasklet_setup(&d40c->tasklet, dma_tasklet); + INIT_WORK(&d40c->work, dma_work); list_add_tail(&d40c->chan.device_node, &dma->channels); diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 583bf49031cf..5afe43f92342 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "virt-dma.h" @@ -200,8 +201,8 @@ struct sun6i_dma_dev { int irq; spinlock_t lock; struct reset_control *rstc; - struct tasklet_struct task; - atomic_t tasklet_shutdown; + struct work_struct work; + atomic_t work_shutdown; struct list_head pending; struct dma_pool *pool; struct sun6i_pchan *pchans; @@ -474,9 +475,9 @@ static int sun6i_dma_start_desc(struct sun6i_vchan *vchan) return 0; } -static void sun6i_dma_tasklet(struct tasklet_struct *t) +static void sun6i_dma_work(struct work_struct *t) { - struct sun6i_dma_dev *sdev = from_tasklet(sdev, t, task); + struct sun6i_dma_dev *sdev = from_work(sdev, t, work); struct sun6i_vchan *vchan; struct sun6i_pchan *pchan; unsigned int pchan_alloc = 0; @@ -574,8 +575,8 @@ static irqreturn_t sun6i_dma_interrupt(int irq, void *dev_id) status = status >> DMA_IRQ_CHAN_WIDTH; } - if (!atomic_read(&sdev->tasklet_shutdown)) - tasklet_schedule(&sdev->task); + if (!atomic_read(&sdev->work_shutdown)) + queue_work(system_bh_wq, &sdev->work); ret = IRQ_HANDLED; } @@ -1000,7 +1001,7 @@ static void sun6i_dma_issue_pending(struct dma_chan *chan) if (!vchan->phy && list_empty(&vchan->node)) { list_add_tail(&vchan->node, &sdev->pending); - tasklet_schedule(&sdev->task); + queue_work(system_bh_wq, &sdev->work); dev_dbg(chan2dev(chan), "vchan %p: issued\n", &vchan->vc); } @@ -1048,20 +1049,20 @@ static struct dma_chan *sun6i_dma_of_xlate(struct of_phandle_args *dma_spec, return chan; } -static inline void sun6i_kill_tasklet(struct sun6i_dma_dev *sdev) +static inline void sun6i_kill_work(struct sun6i_dma_dev *sdev) { /* Disable all interrupts from DMA */ writel(0, sdev->base + DMA_IRQ_EN(0)); writel(0, sdev->base + DMA_IRQ_EN(1)); - /* Prevent spurious interrupts from scheduling the tasklet */ - atomic_inc(&sdev->tasklet_shutdown); + /* Prevent spurious interrupts from scheduling the work */ + atomic_inc(&sdev->work_shutdown); /* Make sure we won't have any further interrupts */ devm_free_irq(sdev->slave.dev, sdev->irq, sdev); - /* Actually prevent the tasklet from being scheduled */ - tasklet_kill(&sdev->task); + /* Actually prevent the work from being scheduled */ + cancel_work_sync(&sdev->work); } static inline void sun6i_dma_free(struct sun6i_dma_dev *sdev) @@ -1072,7 +1073,7 @@ static inline void sun6i_dma_free(struct sun6i_dma_dev *sdev) struct sun6i_vchan *vchan = &sdev->vchans[i]; list_del(&vchan->vc.chan.device_node); - tasklet_kill(&vchan->vc.task); + cancel_work_sync(&vchan->vc.work); } } @@ -1393,7 +1394,7 @@ static int sun6i_dma_probe(struct platform_device *pdev) if (!sdc->vchans) return -ENOMEM; - tasklet_setup(&sdc->task, sun6i_dma_tasklet); + INIT_WORK(&sdc->work, sun6i_dma_work); for (i = 0; i < sdc->num_pchans; i++) { struct sun6i_pchan *pchan = &sdc->pchans[i]; @@ -1458,7 +1459,7 @@ static int sun6i_dma_probe(struct platform_device *pdev) err_dma_unregister: dma_async_device_unregister(&sdc->slave); err_irq_disable: - sun6i_kill_tasklet(sdc); + sun6i_kill_work(sdc); err_mbus_clk_disable: clk_disable_unprepare(sdc->clk_mbus); err_clk_disable: @@ -1477,7 +1478,7 @@ static void sun6i_dma_remove(struct platform_device *pdev) of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&sdc->slave); - sun6i_kill_tasklet(sdc); + sun6i_kill_work(sdc); clk_disable_unprepare(sdc->clk_mbus); clk_disable_unprepare(sdc->clk); diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c index 88547a23825b..5078cb410401 100644 --- a/drivers/dma/tegra186-gpc-dma.c +++ b/drivers/dma/tegra186-gpc-dma.c @@ -1266,7 +1266,7 @@ static void tegra_dma_free_chan_resources(struct dma_chan *dc) tegra_dma_terminate_all(dc); synchronize_irq(tdc->irq); - tasklet_kill(&tdc->vc.task); + cancel_work_sync(&tdc->vc.work); tdc->config_init = false; tdc->slave_id = -1; tdc->sid_dir = DMA_TRANS_NONE; diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index ac69778827f2..51c462840d47 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -194,9 +195,9 @@ struct tegra_dma_channel { struct list_head free_dma_desc; struct list_head cb_desc; - /* ISR handler and tasklet for bottom half of isr handling */ + /* ISR handler and work for bottom half of isr handling */ dma_isr_handler isr_handler; - struct tasklet_struct tasklet; + struct work_struct work; /* Channel-slave specific configuration */ unsigned int slave_id; @@ -632,9 +633,9 @@ static void handle_cont_sngl_cycle_dma_done(struct tegra_dma_channel *tdc, } } -static void tegra_dma_tasklet(struct tasklet_struct *t) +static void tegra_dma_work(struct work_struct *t) { - struct tegra_dma_channel *tdc = from_tasklet(tdc, t, tasklet); + struct tegra_dma_channel *tdc = from_work(tdc, t, work); struct dmaengine_desc_callback cb; struct tegra_dma_desc *dma_desc; unsigned int cb_count; @@ -670,7 +671,7 @@ static irqreturn_t tegra_dma_isr(int irq, void *dev_id) if (status & TEGRA_APBDMA_STATUS_ISE_EOC) { tdc_write(tdc, TEGRA_APBDMA_CHAN_STATUS, status); tdc->isr_handler(tdc, false); - tasklet_schedule(&tdc->tasklet); + queue_work(system_bh_wq, &tdc->work); wake_up_all(&tdc->wq); spin_unlock(&tdc->lock); return IRQ_HANDLED; @@ -819,7 +820,7 @@ static void tegra_dma_synchronize(struct dma_chan *dc) */ wait_event(tdc->wq, tegra_dma_eoc_interrupt_deasserted(tdc)); - tasklet_kill(&tdc->tasklet); + cancel_work_sync(&tdc->work); pm_runtime_put(tdc->tdma->dev); } @@ -1317,7 +1318,7 @@ static void tegra_dma_free_chan_resources(struct dma_chan *dc) dev_dbg(tdc2dev(tdc), "Freeing channel %d\n", tdc->id); tegra_dma_terminate_all(dc); - tasklet_kill(&tdc->tasklet); + cancel_work_sync(&tdc->work); list_splice_init(&tdc->pending_sg_req, &sg_req_list); list_splice_init(&tdc->free_sg_req, &sg_req_list); @@ -1511,7 +1512,7 @@ static int tegra_dma_probe(struct platform_device *pdev) tdc->id = i; tdc->slave_id = TEGRA_APBDMA_SLAVE_ID_INVALID; - tasklet_setup(&tdc->tasklet, tegra_dma_tasklet); + INIT_WORK(&tdc->work, tegra_dma_work); spin_lock_init(&tdc->lock); init_waitqueue_head(&tdc->wq); @@ -1617,7 +1618,7 @@ static int __maybe_unused tegra_dma_dev_suspend(struct device *dev) for (i = 0; i < tdma->chip_data->nr_channels; i++) { struct tegra_dma_channel *tdc = &tdma->channels[i]; - tasklet_kill(&tdc->tasklet); + cancel_work_sync(&tdc->work); spin_lock_irqsave(&tdc->lock, flags); busy = tdc->busy; diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index 24ad7077c53b..36d6bb3e9e1d 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -693,7 +693,7 @@ static void tegra_adma_free_chan_resources(struct dma_chan *dc) tegra_adma_terminate_all(dc); vchan_free_chan_resources(&tdc->vc); - tasklet_kill(&tdc->vc.task); + cancel_work_sync(&tdc->vc.work); free_irq(tdc->irq, tdc); pm_runtime_put(tdc2dev(tdc)); diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c index 5f8d2e93ff3f..c9f78b462a70 100644 --- a/drivers/dma/ti/edma.c +++ b/drivers/dma/ti/edma.c @@ -2556,7 +2556,7 @@ static void edma_cleanupp_vchan(struct dma_device *dmadev) list_for_each_entry_safe(echan, _echan, &dmadev->channels, vchan.chan.device_node) { list_del(&echan->vchan.chan.device_node); - tasklet_kill(&echan->vchan.task); + cancel_work_sync(&echan->vchan.work); } } diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 6400d06588a2..ab5780efb4db 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "../virt-dma.h" #include "k3-udma.h" @@ -4003,12 +4004,12 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc, } /* - * This tasklet handles the completion of a DMA descriptor by + * This work handles the completion of a DMA descriptor by * calling its callback and freeing it. */ -static void udma_vchan_complete(struct tasklet_struct *t) +static void udma_vchan_complete(struct work_struct *t) { - struct virt_dma_chan *vc = from_tasklet(vc, t, task); + struct virt_dma_chan *vc = from_work(vc, t, work); struct virt_dma_desc *vd, *_vd; struct dmaengine_desc_callback cb; LIST_HEAD(head); @@ -4073,7 +4074,7 @@ static void udma_free_chan_resources(struct dma_chan *chan) } vchan_free_chan_resources(&uc->vc); - tasklet_kill(&uc->vc.task); + cancel_work_sync(&uc->vc.work); bcdma_free_bchan_resources(uc); udma_free_tx_resources(uc); @@ -5534,7 +5535,7 @@ static int udma_probe(struct platform_device *pdev) vchan_init(&uc->vc, &ud->ddev); /* Use custom vchan completion handling */ - tasklet_setup(&uc->vc.task, udma_vchan_complete); + INIT_WORK(&uc->vc.work, udma_vchan_complete); init_completion(&uc->teardown_completed); INIT_DELAYED_WORK(&uc->tx_drain.work, udma_check_tx_completion); } diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c index b9e0e22383b7..7b0c4f571a94 100644 --- a/drivers/dma/ti/omap-dma.c +++ b/drivers/dma/ti/omap-dma.c @@ -1521,7 +1521,7 @@ static void omap_dma_free(struct omap_dmadev *od) struct omap_chan, vc.chan.device_node); list_del(&c->vc.chan.device_node); - tasklet_kill(&c->vc.task); + cancel_work_sync(&c->vc.work); kfree(c); } } diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index 7410025605e0..c74f38a634ae 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -18,6 +18,7 @@ #include #include +#include #include "dmaengine.h" @@ -72,7 +73,7 @@ struct timb_dma_chan { void __iomem *membase; spinlock_t lock; /* Used to protect data structures, especially the lists and descriptors, - from races between the tasklet and calls + from races between the work and calls from above */ bool ongoing; struct list_head active_list; @@ -87,7 +88,7 @@ struct timb_dma_chan { struct timb_dma { struct dma_device dma; void __iomem *membase; - struct tasklet_struct tasklet; + struct work_struct work; struct timb_dma_chan channels[]; }; @@ -563,9 +564,9 @@ static int td_terminate_all(struct dma_chan *chan) return 0; } -static void td_tasklet(struct tasklet_struct *t) +static void td_work(struct work_struct *t) { - struct timb_dma *td = from_tasklet(td, t, tasklet); + struct timb_dma *td = from_work(td, t, work); u32 isr; u32 ipr; u32 ier; @@ -598,10 +599,10 @@ static irqreturn_t td_irq(int irq, void *devid) u32 ipr = ioread32(td->membase + TIMBDMA_IPR); if (ipr) { - /* disable interrupts, will be re-enabled in tasklet */ + /* disable interrupts, will be re-enabled in work */ iowrite32(0, td->membase + TIMBDMA_IER); - tasklet_schedule(&td->tasklet); + queue_work(system_bh_wq, &td->work); return IRQ_HANDLED; } else @@ -658,12 +659,12 @@ static int td_probe(struct platform_device *pdev) iowrite32(0x0, td->membase + TIMBDMA_IER); iowrite32(0xFFFFFFFF, td->membase + TIMBDMA_ISR); - tasklet_setup(&td->tasklet, td_tasklet); + INIT_WORK(&td->work, td_work); err = request_irq(irq, td_irq, IRQF_SHARED, DRIVER_NAME, td); if (err) { dev_err(&pdev->dev, "Failed to request IRQ\n"); - goto err_tasklet_kill; + goto err_work_kill; } td->dma.device_alloc_chan_resources = td_alloc_chan_resources; @@ -728,8 +729,8 @@ static int td_probe(struct platform_device *pdev) err_free_irq: free_irq(irq, td); -err_tasklet_kill: - tasklet_kill(&td->tasklet); +err_work_kill: + cancel_work_sync(&td->work); iounmap(td->membase); err_free_mem: kfree(td); @@ -748,7 +749,7 @@ static void td_remove(struct platform_device *pdev) dma_async_device_unregister(&td->dma); free_irq(irq, td); - tasklet_kill(&td->tasklet); + cancel_work_sync(&td->work); iounmap(td->membase); kfree(td); release_mem_region(iomem->start, resource_size(iomem)); diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index 44ba377b4b5a..04916859a7fb 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "dmaengine.h" #include "txx9dmac.h" @@ -340,7 +341,7 @@ static void txx9dmac_dostart(struct txx9dmac_chan *dc, dev_err(chan2dev(&dc->chan), "BUG: Attempted to start non-idle channel\n"); txx9dmac_dump_regs(dc); - /* The tasklet will hopefully advance the queue... */ + /* The work will hopefully advance the queue... */ return; } @@ -601,15 +602,15 @@ static void txx9dmac_scan_descriptors(struct txx9dmac_chan *dc) } } -static void txx9dmac_chan_tasklet(struct tasklet_struct *t) +static void txx9dmac_chan_work(struct work_struct *t) { int irq; u32 csr; struct txx9dmac_chan *dc; - dc = from_tasklet(dc, t, tasklet); + dc = from_work(dc, t, work); csr = channel_readl(dc, CSR); - dev_vdbg(chan2dev(&dc->chan), "tasklet: status=%x\n", csr); + dev_vdbg(chan2dev(&dc->chan), "work: status=%x\n", csr); spin_lock(&dc->lock); if (csr & (TXX9_DMA_CSR_ABCHC | TXX9_DMA_CSR_NCHNC | @@ -628,7 +629,7 @@ static irqreturn_t txx9dmac_chan_interrupt(int irq, void *dev_id) dev_vdbg(chan2dev(&dc->chan), "interrupt: status=%#x\n", channel_readl(dc, CSR)); - tasklet_schedule(&dc->tasklet); + queue_work(system_bh_wq, &dc->work); /* * Just disable the interrupts. We'll turn them back on in the * softirq handler. @@ -638,23 +639,23 @@ static irqreturn_t txx9dmac_chan_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static void txx9dmac_tasklet(struct tasklet_struct *t) +static void txx9dmac_work(struct work_struct *t) { int irq; u32 csr; struct txx9dmac_chan *dc; - struct txx9dmac_dev *ddev = from_tasklet(ddev, t, tasklet); + struct txx9dmac_dev *ddev = from_work(ddev, t, work); u32 mcr; int i; mcr = dma_readl(ddev, MCR); - dev_vdbg(ddev->chan[0]->dma.dev, "tasklet: mcr=%x\n", mcr); + dev_vdbg(ddev->chan[0]->dma.dev, "work: mcr=%x\n", mcr); for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) { if ((mcr >> (24 + i)) & 0x11) { dc = ddev->chan[i]; csr = channel_readl(dc, CSR); - dev_vdbg(chan2dev(&dc->chan), "tasklet: status=%x\n", + dev_vdbg(chan2dev(&dc->chan), "work: status=%x\n", csr); spin_lock(&dc->lock); if (csr & (TXX9_DMA_CSR_ABCHC | TXX9_DMA_CSR_NCHNC | @@ -675,7 +676,7 @@ static irqreturn_t txx9dmac_interrupt(int irq, void *dev_id) dev_vdbg(ddev->chan[0]->dma.dev, "interrupt: status=%#x\n", dma_readl(ddev, MCR)); - tasklet_schedule(&ddev->tasklet); + queue_work(system_bh_wq, &ddev->work); /* * Just disable the interrupts. We'll turn them back on in the * softirq handler. @@ -1113,7 +1114,7 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; - tasklet_setup(&dc->tasklet, txx9dmac_chan_tasklet); + INIT_WORK(&dc->work, txx9dmac_chan_work); dc->irq = irq; err = devm_request_irq(&pdev->dev, dc->irq, txx9dmac_chan_interrupt, 0, dev_name(&pdev->dev), dc); @@ -1159,7 +1160,7 @@ static void txx9dmac_chan_remove(struct platform_device *pdev) dma_async_device_unregister(&dc->dma); if (dc->irq >= 0) { devm_free_irq(&pdev->dev, dc->irq, dc); - tasklet_kill(&dc->tasklet); + cancel_work_sync(&dc->work); } dc->ddev->chan[pdev->id % TXX9_DMA_MAX_NR_CHANNELS] = NULL; } @@ -1198,7 +1199,7 @@ static int __init txx9dmac_probe(struct platform_device *pdev) ddev->irq = platform_get_irq(pdev, 0); if (ddev->irq >= 0) { - tasklet_setup(&ddev->tasklet, txx9dmac_tasklet); + INIT_WORK(&ddev->work, txx9dmac_work); err = devm_request_irq(&pdev->dev, ddev->irq, txx9dmac_interrupt, 0, dev_name(&pdev->dev), ddev); if (err) @@ -1221,7 +1222,7 @@ static void txx9dmac_remove(struct platform_device *pdev) txx9dmac_off(ddev); if (ddev->irq >= 0) { devm_free_irq(&pdev->dev, ddev->irq, ddev); - tasklet_kill(&ddev->tasklet); + cancel_work_sync(&ddev->work); } } diff --git a/drivers/dma/txx9dmac.h b/drivers/dma/txx9dmac.h index aa53eafb1519..e72457b0a509 100644 --- a/drivers/dma/txx9dmac.h +++ b/drivers/dma/txx9dmac.h @@ -8,6 +8,7 @@ #define TXX9DMAC_H #include +#include #include /* @@ -162,7 +163,7 @@ struct txx9dmac_chan { struct dma_device dma; struct txx9dmac_dev *ddev; void __iomem *ch_regs; - struct tasklet_struct tasklet; + struct work_struct work; int irq; u32 ccr; @@ -178,7 +179,7 @@ struct txx9dmac_chan { struct txx9dmac_dev { void __iomem *regs; - struct tasklet_struct tasklet; + struct work_struct work; int irq; struct txx9dmac_chan *chan[TXX9_DMA_MAX_NR_CHANNELS]; bool have_64bit_regs; diff --git a/drivers/dma/virt-dma.c b/drivers/dma/virt-dma.c index a6f4265be0c9..600084be36a7 100644 --- a/drivers/dma/virt-dma.c +++ b/drivers/dma/virt-dma.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "virt-dma.h" @@ -77,12 +78,12 @@ struct virt_dma_desc *vchan_find_desc(struct virt_dma_chan *vc, EXPORT_SYMBOL_GPL(vchan_find_desc); /* - * This tasklet handles the completion of a DMA descriptor by + * This work handles the completion of a DMA descriptor by * calling its callback and freeing it. */ -static void vchan_complete(struct tasklet_struct *t) +static void vchan_complete(struct work_struct *t) { - struct virt_dma_chan *vc = from_tasklet(vc, t, task); + struct virt_dma_chan *vc = from_work(vc, t, work); struct virt_dma_desc *vd, *_vd; struct dmaengine_desc_callback cb; LIST_HEAD(head); @@ -131,7 +132,7 @@ void vchan_init(struct virt_dma_chan *vc, struct dma_device *dmadev) INIT_LIST_HEAD(&vc->desc_completed); INIT_LIST_HEAD(&vc->desc_terminated); - tasklet_setup(&vc->task, vchan_complete); + INIT_WORK(&vc->work, vchan_complete); vc->chan.device = dmadev; list_add_tail(&vc->chan.device_node, &dmadev->channels); diff --git a/drivers/dma/virt-dma.h b/drivers/dma/virt-dma.h index e9f5250fbe4d..5b6e01508177 100644 --- a/drivers/dma/virt-dma.h +++ b/drivers/dma/virt-dma.h @@ -9,6 +9,7 @@ #include #include +#include #include "dmaengine.h" @@ -21,7 +22,7 @@ struct virt_dma_desc { struct virt_dma_chan { struct dma_chan chan; - struct tasklet_struct task; + struct work_struct work; void (*desc_free)(struct virt_dma_desc *); spinlock_t lock; @@ -102,7 +103,7 @@ static inline void vchan_cookie_complete(struct virt_dma_desc *vd) vd, cookie); list_add_tail(&vd->node, &vc->desc_completed); - tasklet_schedule(&vc->task); + queue_work(system_bh_wq, &vc->work); } /** @@ -133,7 +134,7 @@ static inline void vchan_cyclic_callback(struct virt_dma_desc *vd) struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan); vc->cyclic = vd; - tasklet_schedule(&vc->task); + queue_work(system_bh_wq, &vc->work); } /** @@ -213,7 +214,7 @@ static inline void vchan_synchronize(struct virt_dma_chan *vc) LIST_HEAD(head); unsigned long flags; - tasklet_kill(&vc->task); + cancel_work_sync(&vc->work); spin_lock_irqsave(&vc->lock, flags); diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c index fd4397adeb79..c7b7fc0c7fcc 100644 --- a/drivers/dma/xgene-dma.c +++ b/drivers/dma/xgene-dma.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "dmaengine.h" @@ -261,7 +262,7 @@ struct xgene_dma_desc_sw { * These descriptors have already had their cleanup actions run. They * are waiting for the ACK bit to be set by the async tx API. * @desc_pool: descriptor pool for DMA operations - * @tasklet: bottom half where all completed descriptors cleans + * @work: bottom half where all completed descriptors cleans * @tx_ring: transmit ring descriptor that we use to prepare actual * descriptors for further executions * @rx_ring: receive ring descriptor that we use to get completed DMA @@ -281,7 +282,7 @@ struct xgene_dma_chan { struct list_head ld_running; struct list_head ld_completed; struct dma_pool *desc_pool; - struct tasklet_struct tasklet; + struct work_struct work; struct xgene_dma_ring tx_ring; struct xgene_dma_ring rx_ring; }; @@ -976,9 +977,9 @@ static enum dma_status xgene_dma_tx_status(struct dma_chan *dchan, return dma_cookie_status(dchan, cookie, txstate); } -static void xgene_dma_tasklet_cb(struct tasklet_struct *t) +static void xgene_dma_work_cb(struct work_struct *t) { - struct xgene_dma_chan *chan = from_tasklet(chan, t, tasklet); + struct xgene_dma_chan *chan = from_work(chan, t, work); /* Run all cleanup for descriptors which have been completed */ xgene_dma_cleanup_descriptors(chan); @@ -1000,11 +1001,11 @@ static irqreturn_t xgene_dma_chan_ring_isr(int irq, void *id) disable_irq_nosync(chan->rx_irq); /* - * Schedule the tasklet to handle all cleanup of the current + * Schedule the work to handle all cleanup of the current * transaction. It will start a new transaction if there is * one pending. */ - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); return IRQ_HANDLED; } @@ -1540,7 +1541,7 @@ static int xgene_dma_async_register(struct xgene_dma *pdma, int id) INIT_LIST_HEAD(&chan->ld_pending); INIT_LIST_HEAD(&chan->ld_running); INIT_LIST_HEAD(&chan->ld_completed); - tasklet_setup(&chan->tasklet, xgene_dma_tasklet_cb); + INIT_WORK(&chan->work, xgene_dma_work_cb); chan->pending = 0; chan->desc_pool = NULL; @@ -1557,7 +1558,7 @@ static int xgene_dma_async_register(struct xgene_dma *pdma, int id) ret = dma_async_device_register(dma_dev); if (ret) { chan_err(chan, "Failed to register async device %d", ret); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); return ret; } @@ -1580,7 +1581,7 @@ static int xgene_dma_init_async(struct xgene_dma *pdma) if (ret) { for (j = 0; j < i; j++) { dma_async_device_unregister(&pdma->dma_dev[j]); - tasklet_kill(&pdma->chan[j].tasklet); + cancel_work_sync(&pdma->chan[j].work); } return ret; @@ -1791,7 +1792,7 @@ static void xgene_dma_remove(struct platform_device *pdev) for (i = 0; i < XGENE_DMA_MAX_CHANNEL; i++) { chan = &pdma->chan[i]; - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); xgene_dma_delete_chan_rings(chan); } diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 5eb51ae93e89..d3192eedbee6 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -48,6 +48,7 @@ #include #include #include +#include #include "../dmaengine.h" @@ -400,7 +401,7 @@ struct xilinx_dma_tx_descriptor { * @err: Channel has errors * @idle: Check for channel idle * @terminating: Check for channel being synchronized by user - * @tasklet: Cleanup work after irq + * @work: Cleanup work after irq * @config: Device configuration info * @flush_on_fsync: Flush on Frame sync * @desc_pendingcount: Descriptor pending count @@ -439,7 +440,7 @@ struct xilinx_dma_chan { bool err; bool idle; bool terminating; - struct tasklet_struct tasklet; + struct work_struct work; struct xilinx_vdma_config config; bool flush_on_fsync; u32 desc_pendingcount; @@ -1094,12 +1095,12 @@ static void xilinx_dma_chan_desc_cleanup(struct xilinx_dma_chan *chan) } /** - * xilinx_dma_do_tasklet - Schedule completion tasklet + * xilinx_dma_do_work - Schedule completion work * @t: Pointer to the Xilinx DMA channel structure */ -static void xilinx_dma_do_tasklet(struct tasklet_struct *t) +static void xilinx_dma_do_work(struct work_struct *t) { - struct xilinx_dma_chan *chan = from_tasklet(chan, t, tasklet); + struct xilinx_dma_chan *chan = from_work(chan, t, work); xilinx_dma_chan_desc_cleanup(chan); } @@ -1859,7 +1860,7 @@ static irqreturn_t xilinx_mcdma_irq_handler(int irq, void *data) spin_unlock(&chan->lock); } - tasklet_hi_schedule(&chan->tasklet); + queue_work(system_bh_highpri_wq, &chan->work); return IRQ_HANDLED; } @@ -1916,7 +1917,7 @@ static irqreturn_t xilinx_dma_irq_handler(int irq, void *data) spin_unlock(&chan->lock); } - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); return IRQ_HANDLED; } @@ -2522,7 +2523,7 @@ static void xilinx_dma_synchronize(struct dma_chan *dchan) { struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); } /** @@ -2613,7 +2614,7 @@ static void xilinx_dma_chan_remove(struct xilinx_dma_chan *chan) if (chan->irq > 0) free_irq(chan->irq, chan); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); list_del(&chan->common.device_node); } @@ -2941,8 +2942,8 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev, chan->has_sg ? "enabled" : "disabled"); } - /* Initialize the tasklet */ - tasklet_setup(&chan->tasklet, xilinx_dma_do_tasklet); + /* Initialize the work */ + INIT_WORK(&chan->work, xilinx_dma_do_work); /* * Initialize the DMA channel and add it to the DMA engine channels diff --git a/drivers/dma/xilinx/xilinx_dpdma.c b/drivers/dma/xilinx/xilinx_dpdma.c index b82815e64d24..a099ddffeba0 100644 --- a/drivers/dma/xilinx/xilinx_dpdma.c +++ b/drivers/dma/xilinx/xilinx_dpdma.c @@ -24,6 +24,7 @@ #include #include #include +#include #include @@ -234,7 +235,7 @@ struct xilinx_dpdma_chan { spinlock_t lock; /* lock to access struct xilinx_dpdma_chan */ struct dma_pool *desc_pool; - struct tasklet_struct err_task; + struct work_struct err_task; struct { struct xilinx_dpdma_tx_desc *pending; @@ -1396,7 +1397,7 @@ static void xilinx_dpdma_synchronize(struct dma_chan *dchan) } /* ----------------------------------------------------------------------------- - * Interrupt and Tasklet Handling + * Interrupt and Work Handling */ /** @@ -1443,7 +1444,7 @@ static void xilinx_dpdma_handle_err_irq(struct xilinx_dpdma_device *xdev, for (i = 0; i < ARRAY_SIZE(xdev->chan); i++) if (err || xilinx_dpdma_chan_err(xdev->chan[i], isr, eisr)) - tasklet_schedule(&xdev->chan[i]->err_task); + queue_work(system_bh_wq, &xdev->chan[i]->err_task); } /** @@ -1471,16 +1472,16 @@ static void xilinx_dpdma_disable_irq(struct xilinx_dpdma_device *xdev) } /** - * xilinx_dpdma_chan_err_task - Per channel tasklet for error handling - * @t: pointer to the tasklet associated with this handler + * xilinx_dpdma_chan_err_task - Per channel work for error handling + * @t: pointer to the work associated with this handler * - * Per channel error handling tasklet. This function waits for the outstanding + * Per channel error handling work. This function waits for the outstanding * transaction to complete and triggers error handling. After error handling, * re-enable channel error interrupts, and restart the channel if needed. */ -static void xilinx_dpdma_chan_err_task(struct tasklet_struct *t) +static void xilinx_dpdma_chan_err_task(struct work_struct *t) { - struct xilinx_dpdma_chan *chan = from_tasklet(chan, t, err_task); + struct xilinx_dpdma_chan *chan = from_work(chan, t, err_task); struct xilinx_dpdma_device *xdev = chan->xdev; unsigned long flags; @@ -1569,7 +1570,7 @@ static int xilinx_dpdma_chan_init(struct xilinx_dpdma_device *xdev, spin_lock_init(&chan->lock); init_waitqueue_head(&chan->wait_to_stop); - tasklet_setup(&chan->err_task, xilinx_dpdma_chan_err_task); + INIT_WORK(&chan->err_task, xilinx_dpdma_chan_err_task); chan->vchan.desc_free = xilinx_dpdma_chan_free_tx_desc; vchan_init(&chan->vchan, &xdev->common); @@ -1584,7 +1585,7 @@ static void xilinx_dpdma_chan_remove(struct xilinx_dpdma_chan *chan) if (!chan) return; - tasklet_kill(&chan->err_task); + cancel_work_sync(&chan->err_task); list_del(&chan->vchan.chan.device_node); } diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index f31631bef961..a4b55a45fd3d 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "../dmaengine.h" @@ -204,7 +205,7 @@ struct zynqmp_dma_desc_sw { * @dev: The dma device * @irq: Channel IRQ * @is_dmacoherent: Tells whether dma operations are coherent or not - * @tasklet: Cleanup work after irq + * @work: Cleanup work after irq * @idle : Channel status; * @desc_size: Size of the low level descriptor * @err: Channel has errors @@ -228,7 +229,7 @@ struct zynqmp_dma_chan { struct device *dev; int irq; bool is_dmacoherent; - struct tasklet_struct tasklet; + struct work_struct work; bool idle; size_t desc_size; bool err; @@ -724,7 +725,7 @@ static irqreturn_t zynqmp_dma_irq_handler(int irq, void *data) writel(isr, chan->regs + ZYNQMP_DMA_ISR); if (status & ZYNQMP_DMA_INT_DONE) { - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); ret = IRQ_HANDLED; } @@ -733,7 +734,7 @@ static irqreturn_t zynqmp_dma_irq_handler(int irq, void *data) if (status & ZYNQMP_DMA_INT_ERR) { chan->err = true; - tasklet_schedule(&chan->tasklet); + queue_work(system_bh_wq, &chan->work); dev_err(chan->dev, "Channel %p has errors\n", chan); ret = IRQ_HANDLED; } @@ -748,12 +749,12 @@ static irqreturn_t zynqmp_dma_irq_handler(int irq, void *data) } /** - * zynqmp_dma_do_tasklet - Schedule completion tasklet + * zynqmp_dma_do_work - Schedule completion work * @t: Pointer to the ZynqMP DMA channel structure */ -static void zynqmp_dma_do_tasklet(struct tasklet_struct *t) +static void zynqmp_dma_do_work(struct work_struct *t) { - struct zynqmp_dma_chan *chan = from_tasklet(chan, t, tasklet); + struct zynqmp_dma_chan *chan = from_work(chan, t, work); u32 count; unsigned long irqflags; @@ -804,7 +805,7 @@ static void zynqmp_dma_synchronize(struct dma_chan *dchan) { struct zynqmp_dma_chan *chan = to_chan(dchan); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); } /** @@ -876,7 +877,7 @@ static void zynqmp_dma_chan_remove(struct zynqmp_dma_chan *chan) if (chan->irq) devm_free_irq(chan->zdev->dev, chan->irq, chan); - tasklet_kill(&chan->tasklet); + cancel_work_sync(&chan->work); list_del(&chan->common.device_node); } @@ -921,7 +922,7 @@ static int zynqmp_dma_chan_probe(struct zynqmp_dma_device *zdev, chan->is_dmacoherent = of_property_read_bool(node, "dma-coherent"); zdev->chan = chan; - tasklet_setup(&chan->tasklet, zynqmp_dma_do_tasklet); + INIT_WORK(&chan->work, zynqmp_dma_do_work); spin_lock_init(&chan->lock); INIT_LIST_HEAD(&chan->active_list); INIT_LIST_HEAD(&chan->pending_list); From patchwork Wed Mar 27 16:03:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606980 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 100B1131196; Wed, 27 Mar 2024 16:03:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="LF4c8+u7" Received: from apais-vm1.0synte4vioeebbvidf5q0vz2ua.xx.internal.cloudapp.net (unknown [52.183.86.224]) by linux.microsoft.com (Postfix) with ESMTPSA id 85F7C2085D12; Wed, 27 Mar 2024 09:03:21 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 85F7C2085D12 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555401; bh=haxatjJf3ExzQxyLxhyBSdBbLt149x1NFm9OJuTg9mI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LF4c8+u7hxH1gtkMde2nUFLeOY7qhsSOLX3MYrPKOxgU6onwRJa3Beop1iYM8rhwY JKJWabOHr3bDubopTkSrfOda6dk06SLxefXbd0NX6Vz+Vhi9K8wsJz84JBq49IJQPt zQ1biSALtkbOTUh7I9PCcfln+/IY04Wu2+8SHeT0= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 3/9] IB: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:08 +0000 Message-Id: <20240327160314.9982-4-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais --- drivers/infiniband/hw/bnxt_re/bnxt_re.h | 3 +- drivers/infiniband/hw/bnxt_re/qplib_fp.c | 21 ++++++------ drivers/infiniband/hw/bnxt_re/qplib_fp.h | 2 +- drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 25 ++++++++------- drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 2 +- drivers/infiniband/hw/erdma/erdma.h | 3 +- drivers/infiniband/hw/erdma/erdma_eq.c | 11 ++++--- drivers/infiniband/hw/hfi1/rc.c | 2 +- drivers/infiniband/hw/hfi1/sdma.c | 37 +++++++++++----------- drivers/infiniband/hw/hfi1/sdma.h | 9 +++--- drivers/infiniband/hw/hfi1/tid_rdma.c | 6 ++-- drivers/infiniband/hw/irdma/ctrl.c | 2 +- drivers/infiniband/hw/irdma/hw.c | 24 +++++++------- drivers/infiniband/hw/irdma/main.h | 5 +-- drivers/infiniband/hw/qib/qib.h | 7 ++-- drivers/infiniband/hw/qib/qib_iba7322.c | 9 +++--- drivers/infiniband/hw/qib/qib_rc.c | 16 +++++----- drivers/infiniband/hw/qib/qib_ruc.c | 4 +-- drivers/infiniband/hw/qib/qib_sdma.c | 11 ++++--- drivers/infiniband/sw/rdmavt/qp.c | 2 +- 20 files changed, 106 insertions(+), 95 deletions(-) diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h index 9dca451ed522..f511c8415806 100644 --- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h +++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h @@ -42,6 +42,7 @@ #include #include "hw_counters.h" #include +#include #define ROCE_DRV_MODULE_NAME "bnxt_re" #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" @@ -162,7 +163,7 @@ struct bnxt_re_dev { u8 cur_prio_map; /* FP Notification Queue (CQ & SRQ) */ - struct tasklet_struct nq_task; + struct work_struct nq_work; /* RCFW Channel */ struct bnxt_qplib_rcfw rcfw; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c index 439d0c7c5d0c..052906982cdf 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c @@ -46,6 +46,7 @@ #include #include #include +#include #include #include "roce_hsi.h" @@ -294,9 +295,9 @@ static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events) } } -static void bnxt_qplib_service_nq(struct tasklet_struct *t) +static void bnxt_qplib_service_nq(struct work_struct *t) { - struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet); + struct bnxt_qplib_nq *nq = from_work(nq, t, nq_work); struct bnxt_qplib_hwq *hwq = &nq->hwq; struct bnxt_qplib_cq *cq; int budget = nq->budget; @@ -394,7 +395,7 @@ void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq) int budget = nq->budget; nq->budget = nq->hwq.max_elements; - bnxt_qplib_service_nq(&nq->nq_tasklet); + bnxt_qplib_service_nq(&nq->nq_work); nq->budget = budget; } @@ -409,7 +410,7 @@ static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance) prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); /* Fan out to CPU affinitized kthreads? */ - tasklet_schedule(&nq->nq_tasklet); + queue_work(system_bh_wq, &nq->nq_work); return IRQ_HANDLED; } @@ -430,8 +431,8 @@ void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill) nq->name = NULL; if (kill) - tasklet_kill(&nq->nq_tasklet); - tasklet_disable(&nq->nq_tasklet); + cancel_work_sync(&nq->nq_work); + disable_work_sync(&nq->nq_work); } void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq) @@ -465,9 +466,9 @@ int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, nq->msix_vec = msix_vector; if (need_init) - tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq); + INIT_WORK(&nq->nq_work, bnxt_qplib_service_nq); else - tasklet_enable(&nq->nq_tasklet); + enable_and_queue_work(system_bh_wq, &nq->nq_work); nq->name = kasprintf(GFP_KERNEL, "bnxt_re-nq-%d@pci:%s", nq_indx, pci_name(res->pdev)); @@ -477,7 +478,7 @@ int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, if (rc) { kfree(nq->name); nq->name = NULL; - tasklet_disable(&nq->nq_tasklet); + disable_work_sync(&nq->nq_work); return rc; } @@ -541,7 +542,7 @@ int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq, nq->cqn_handler = cqn_handler; nq->srqn_handler = srqn_handler; - /* Have a task to schedule CQ notifiers in post send case */ + /* Have a work to schedule CQ notifiers in post send case */ nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq"); if (!nq->cqn_wq) return -ENOMEM; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h index 7fd4506b3584..6ee3e501d136 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h @@ -494,7 +494,7 @@ struct bnxt_qplib_nq { u16 ring_id; int msix_vec; cpumask_t mask; - struct tasklet_struct nq_tasklet; + struct work_struct nq_work; bool requested; int budget; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c index 3ffaef0c2651..2fba712d88db 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c @@ -43,6 +43,7 @@ #include #include #include +#include #include "roce_hsi.h" #include "qplib_res.h" @@ -51,7 +52,7 @@ #include "qplib_fp.h" #include "qplib_tlv.h" -static void bnxt_qplib_service_creq(struct tasklet_struct *t); +static void bnxt_qplib_service_creq(struct work_struct *t); /** * bnxt_qplib_map_rc - map return type based on opcode @@ -165,7 +166,7 @@ static int __wait_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) if (!crsqe->is_in_used) return 0; - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); + bnxt_qplib_service_creq(&rcfw->creq.creq_work); if (!crsqe->is_in_used) return 0; @@ -206,7 +207,7 @@ static int __block_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) udelay(1); - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); + bnxt_qplib_service_creq(&rcfw->creq.creq_work); if (!crsqe->is_in_used) return 0; @@ -403,7 +404,7 @@ static int __poll_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) usleep_range(1000, 1001); - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); + bnxt_qplib_service_creq(&rcfw->creq.creq_work); if (!crsqe->is_in_used) return 0; if (jiffies_to_msecs(jiffies - issue_time) > @@ -727,9 +728,9 @@ static int bnxt_qplib_process_qp_event(struct bnxt_qplib_rcfw *rcfw, } /* SP - CREQ Completion handlers */ -static void bnxt_qplib_service_creq(struct tasklet_struct *t) +static void bnxt_qplib_service_creq(struct work_struct *t) { - struct bnxt_qplib_rcfw *rcfw = from_tasklet(rcfw, t, creq.creq_tasklet); + struct bnxt_qplib_rcfw *rcfw = from_work(rcfw, t, creq.creq_work); struct bnxt_qplib_creq_ctx *creq = &rcfw->creq; u32 type, budget = CREQ_ENTRY_POLL_BUDGET; struct bnxt_qplib_hwq *hwq = &creq->hwq; @@ -800,7 +801,7 @@ static irqreturn_t bnxt_qplib_creq_irq(int irq, void *dev_instance) sw_cons = HWQ_CMP(hwq->cons, hwq); prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); - tasklet_schedule(&creq->creq_tasklet); + queue_work(system_bh_wq, &creq->creq_work); return IRQ_HANDLED; } @@ -1007,8 +1008,8 @@ void bnxt_qplib_rcfw_stop_irq(struct bnxt_qplib_rcfw *rcfw, bool kill) creq->irq_name = NULL; atomic_set(&rcfw->rcfw_intr_enabled, 0); if (kill) - tasklet_kill(&creq->creq_tasklet); - tasklet_disable(&creq->creq_tasklet); + cancel_work_sync(&creq->creq_work); + disable_work_sync(&creq->creq_work); } void bnxt_qplib_disable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw) @@ -1045,9 +1046,9 @@ int bnxt_qplib_rcfw_start_irq(struct bnxt_qplib_rcfw *rcfw, int msix_vector, creq->msix_vec = msix_vector; if (need_init) - tasklet_setup(&creq->creq_tasklet, bnxt_qplib_service_creq); + INIT_WORK(&creq->creq_work, bnxt_qplib_service_creq); else - tasklet_enable(&creq->creq_tasklet); + enable_and_queue_work(system_bh_wq, &creq->creq_work); creq->irq_name = kasprintf(GFP_KERNEL, "bnxt_re-creq@pci:%s", pci_name(res->pdev)); @@ -1058,7 +1059,7 @@ int bnxt_qplib_rcfw_start_irq(struct bnxt_qplib_rcfw *rcfw, int msix_vector, if (rc) { kfree(creq->irq_name); creq->irq_name = NULL; - tasklet_disable(&creq->creq_tasklet); + disable_work_sync(&creq->creq_work); return rc; } creq->requested = true; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h index 45996e60a0d0..8efa474fcf3f 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h @@ -207,7 +207,7 @@ struct bnxt_qplib_creq_ctx { struct bnxt_qplib_hwq hwq; struct bnxt_qplib_creq_db creq_db; struct bnxt_qplib_creq_stat stats; - struct tasklet_struct creq_tasklet; + struct work_struct creq_work; aeq_handler_t aeq_handler; u16 ring_id; int msix_vec; diff --git a/drivers/infiniband/hw/erdma/erdma.h b/drivers/infiniband/hw/erdma/erdma.h index 5df401a30cb9..9a47c1432c27 100644 --- a/drivers/infiniband/hw/erdma/erdma.h +++ b/drivers/infiniband/hw/erdma/erdma.h @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "erdma_hw.h" @@ -161,7 +162,7 @@ struct erdma_eq_cb { void *dev; /* All EQs use this fields to get erdma_dev struct */ struct erdma_irq irq; struct erdma_eq eq; - struct tasklet_struct tasklet; + struct work_struct work; }; struct erdma_resource_cb { diff --git a/drivers/infiniband/hw/erdma/erdma_eq.c b/drivers/infiniband/hw/erdma/erdma_eq.c index ea47cb21fdb8..252906fd73b0 100644 --- a/drivers/infiniband/hw/erdma/erdma_eq.c +++ b/drivers/infiniband/hw/erdma/erdma_eq.c @@ -160,14 +160,16 @@ static irqreturn_t erdma_intr_ceq_handler(int irq, void *data) { struct erdma_eq_cb *ceq_cb = data; - tasklet_schedule(&ceq_cb->tasklet); + queue_work(system_bh_wq, &ceq_cb->work); return IRQ_HANDLED; } -static void erdma_intr_ceq_task(unsigned long data) +static void erdma_intr_ceq_task(struct work_struct *t) { - erdma_ceq_completion_handler((struct erdma_eq_cb *)data); + struct erdma_eq_cb *ceq_cb = from_work(ceq_cb, t, work); + + erdma_ceq_completion_handler(ceq_cb); } static int erdma_set_ceq_irq(struct erdma_dev *dev, u16 ceqn) @@ -179,8 +181,7 @@ static int erdma_set_ceq_irq(struct erdma_dev *dev, u16 ceqn) pci_name(dev->pdev)); eqc->irq.msix_vector = pci_irq_vector(dev->pdev, ceqn + 1); - tasklet_init(&dev->ceqs[ceqn].tasklet, erdma_intr_ceq_task, - (unsigned long)&dev->ceqs[ceqn]); + INIT_WORK(&dev->ceqs[ceqn].work, erdma_intr_ceq_task); cpumask_set_cpu(cpumask_local_spread(ceqn + 1, dev->attrs.numa_node), &eqc->irq.affinity_hint_mask); diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c index b36242c9d42c..ec19ddbfdacb 100644 --- a/drivers/infiniband/hw/hfi1/rc.c +++ b/drivers/infiniband/hw/hfi1/rc.c @@ -1210,7 +1210,7 @@ static inline void hfi1_queue_rc_ack(struct hfi1_packet *packet, bool is_fecn) if (is_fecn) qp->s_flags |= RVT_S_ECN; - /* Schedule the send tasklet. */ + /* Schedule the send work. */ hfi1_schedule_send(qp); unlock: spin_unlock_irqrestore(&qp->s_lock, flags); diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c index b67d23b1f286..5e1a1dd45511 100644 --- a/drivers/infiniband/hw/hfi1/sdma.c +++ b/drivers/infiniband/hw/hfi1/sdma.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "hfi.h" #include "common.h" @@ -190,11 +191,11 @@ static const struct sdma_set_state_action sdma_action_table[] = { static void sdma_complete(struct kref *); static void sdma_finalput(struct sdma_state *); static void sdma_get(struct sdma_state *); -static void sdma_hw_clean_up_task(struct tasklet_struct *); +static void sdma_hw_clean_up_task(struct work_struct *); static void sdma_put(struct sdma_state *); static void sdma_set_state(struct sdma_engine *, enum sdma_states); static void sdma_start_hw_clean_up(struct sdma_engine *); -static void sdma_sw_clean_up_task(struct tasklet_struct *); +static void sdma_sw_clean_up_task(struct work_struct *); static void sdma_sendctrl(struct sdma_engine *, unsigned); static void init_sdma_regs(struct sdma_engine *, u32, uint); static void sdma_process_event( @@ -503,9 +504,9 @@ static void sdma_err_progress_check(struct timer_list *t) schedule_work(&sde->err_halt_worker); } -static void sdma_hw_clean_up_task(struct tasklet_struct *t) +static void sdma_hw_clean_up_task(struct work_struct *t) { - struct sdma_engine *sde = from_tasklet(sde, t, + struct sdma_engine *sde = from_work(sde, t, sdma_hw_clean_up_task); u64 statuscsr; @@ -563,9 +564,9 @@ static void sdma_flush_descq(struct sdma_engine *sde) sdma_desc_avail(sde, sdma_descq_freecnt(sde)); } -static void sdma_sw_clean_up_task(struct tasklet_struct *t) +static void sdma_sw_clean_up_task(struct work_struct *t) { - struct sdma_engine *sde = from_tasklet(sde, t, sdma_sw_clean_up_task); + struct sdma_engine *sde = from_work(sde, t, sdma_sw_clean_up_task); unsigned long flags; spin_lock_irqsave(&sde->tail_lock, flags); @@ -624,7 +625,7 @@ static void sdma_sw_tear_down(struct sdma_engine *sde) static void sdma_start_hw_clean_up(struct sdma_engine *sde) { - tasklet_hi_schedule(&sde->sdma_hw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_hw_clean_up_task); } static void sdma_set_state(struct sdma_engine *sde, @@ -1415,9 +1416,9 @@ int sdma_init(struct hfi1_devdata *dd, u8 port) sde->tail_csr = get_kctxt_csr_addr(dd, this_idx, SD(TAIL)); - tasklet_setup(&sde->sdma_hw_clean_up_task, + INIT_WORK(&sde->sdma_hw_clean_up_task, sdma_hw_clean_up_task); - tasklet_setup(&sde->sdma_sw_clean_up_task, + INIT_WORK(&sde->sdma_sw_clean_up_task, sdma_sw_clean_up_task); INIT_WORK(&sde->err_halt_worker, sdma_err_halt_wait); INIT_WORK(&sde->flush_worker, sdma_field_flush); @@ -2741,7 +2742,7 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; @@ -2783,13 +2784,13 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; case sdma_event_e15_hw_halt_done: sdma_set_state(sde, sdma_state_s30_sw_clean_up_wait); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e25_hw_clean_up_done: break; @@ -2824,13 +2825,13 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; case sdma_event_e15_hw_halt_done: sdma_set_state(sde, sdma_state_s30_sw_clean_up_wait); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e25_hw_clean_up_done: break; @@ -2864,7 +2865,7 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; @@ -2888,7 +2889,7 @@ static void __sdma_process_event(struct sdma_engine *sde, break; case sdma_event_e81_hw_frozen: sdma_set_state(sde, sdma_state_s82_freeze_sw_clean); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e82_hw_unfreeze: break; @@ -2903,7 +2904,7 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; @@ -2947,7 +2948,7 @@ static void __sdma_process_event(struct sdma_engine *sde, switch (event) { case sdma_event_e00_go_hw_down: sdma_set_state(sde, sdma_state_s00_hw_down); - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); break; case sdma_event_e10_go_hw_start: break; diff --git a/drivers/infiniband/hw/hfi1/sdma.h b/drivers/infiniband/hw/hfi1/sdma.h index d77246b48434..3f047260cebe 100644 --- a/drivers/infiniband/hw/hfi1/sdma.h +++ b/drivers/infiniband/hw/hfi1/sdma.h @@ -11,6 +11,7 @@ #include #include #include +#include #include "hfi.h" #include "verbs.h" @@ -346,11 +347,11 @@ struct sdma_engine { /* CONFIG SDMA for now, just blindly duplicate */ /* private: */ - struct tasklet_struct sdma_hw_clean_up_task + struct work_struct sdma_hw_clean_up_task ____cacheline_aligned_in_smp; /* private: */ - struct tasklet_struct sdma_sw_clean_up_task + struct work_struct sdma_sw_clean_up_task ____cacheline_aligned_in_smp; /* private: */ struct work_struct err_halt_worker; @@ -471,7 +472,7 @@ void _sdma_txreq_ahgadd( * Completions of submitted requests can be gotten on selected * txreqs by giving a completion routine callback to sdma_txinit() or * sdma_txinit_ahg(). The environment in which the callback runs - * can be from an ISR, a tasklet, or a thread, so no sleeping + * can be from an ISR, a work, or a thread, so no sleeping * kernel routines can be used. Aspects of the sdma ring may * be locked so care should be taken with locking. * @@ -551,7 +552,7 @@ static inline int sdma_txinit_ahg( * Completions of submitted requests can be gotten on selected * txreqs by giving a completion routine callback to sdma_txinit() or * sdma_txinit_ahg(). The environment in which the callback runs - * can be from an ISR, a tasklet, or a thread, so no sleeping + * can be from an ISR, a work, or a thread, so no sleeping * kernel routines can be used. The head size of the sdma ring may * be locked so care should be taken with locking. * diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c index c465966a1d9c..31cb5a092f42 100644 --- a/drivers/infiniband/hw/hfi1/tid_rdma.c +++ b/drivers/infiniband/hw/hfi1/tid_rdma.c @@ -2316,7 +2316,7 @@ void hfi1_rc_rcv_tid_rdma_read_req(struct hfi1_packet *packet) */ qpriv->r_tid_alloc = qp->r_head_ack_queue; - /* Schedule the send tasklet. */ + /* Schedule the send work. */ qp->s_flags |= RVT_S_RESP_PENDING; if (fecn) qp->s_flags |= RVT_S_ECN; @@ -3807,7 +3807,7 @@ void hfi1_rc_rcv_tid_rdma_write_req(struct hfi1_packet *packet) hfi1_tid_write_alloc_resources(qp, true); trace_hfi1_tid_write_rsp_rcv_req(qp); - /* Schedule the send tasklet. */ + /* Schedule the send work. */ qp->s_flags |= RVT_S_RESP_PENDING; if (fecn) qp->s_flags |= RVT_S_ECN; @@ -5389,7 +5389,7 @@ static void hfi1_do_tid_send(struct rvt_qp *qp) /* * If the packet cannot be sent now, return and - * the send tasklet will be woken up later. + * the send work will be woken up later. */ if (hfi1_verbs_send(qp, &ps)) return; diff --git a/drivers/infiniband/hw/irdma/ctrl.c b/drivers/infiniband/hw/irdma/ctrl.c index 6aed6169c07d..e9644f2b774d 100644 --- a/drivers/infiniband/hw/irdma/ctrl.c +++ b/drivers/infiniband/hw/irdma/ctrl.c @@ -5271,7 +5271,7 @@ int irdma_process_cqp_cmd(struct irdma_sc_dev *dev, } /** - * irdma_process_bh - called from tasklet for cqp list + * irdma_process_bh - called from work for cqp list * @dev: sc device struct */ int irdma_process_bh(struct irdma_sc_dev *dev) diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c index ad50b77282f8..18d552919c28 100644 --- a/drivers/infiniband/hw/irdma/hw.c +++ b/drivers/infiniband/hw/irdma/hw.c @@ -440,12 +440,12 @@ static void irdma_ena_intr(struct irdma_sc_dev *dev, u32 msix_id) } /** - * irdma_dpc - tasklet for aeq and ceq 0 - * @t: tasklet_struct ptr + * irdma_dpc - work for aeq and ceq 0 + * @t: work_struct ptr */ -static void irdma_dpc(struct tasklet_struct *t) +static void irdma_dpc(struct work_struct *t) { - struct irdma_pci_f *rf = from_tasklet(rf, t, dpc_tasklet); + struct irdma_pci_f *rf = from_work(rf, t, dpc_work); if (rf->msix_shared) irdma_process_ceq(rf, rf->ceqlist); @@ -455,11 +455,11 @@ static void irdma_dpc(struct tasklet_struct *t) /** * irdma_ceq_dpc - dpc handler for CEQ - * @t: tasklet_struct ptr + * @t: work_struct ptr */ -static void irdma_ceq_dpc(struct tasklet_struct *t) +static void irdma_ceq_dpc(struct work_struct *t) { - struct irdma_ceq *iwceq = from_tasklet(iwceq, t, dpc_tasklet); + struct irdma_ceq *iwceq = from_work(iwceq, t, dpc_work); struct irdma_pci_f *rf = iwceq->rf; irdma_process_ceq(rf, iwceq); @@ -533,7 +533,7 @@ static irqreturn_t irdma_irq_handler(int irq, void *data) { struct irdma_pci_f *rf = data; - tasklet_schedule(&rf->dpc_tasklet); + queue_work(system_bh_wq, &rf->dpc_work); return IRQ_HANDLED; } @@ -550,7 +550,7 @@ static irqreturn_t irdma_ceq_handler(int irq, void *data) if (iwceq->irq != irq) ibdev_err(to_ibdev(&iwceq->rf->sc_dev), "expected irq = %d received irq = %d\n", iwceq->irq, irq); - tasklet_schedule(&iwceq->dpc_tasklet); + queue_work(system_bh_wq, &iwceq->dpc_work); return IRQ_HANDLED; } @@ -1121,14 +1121,14 @@ static int irdma_cfg_ceq_vector(struct irdma_pci_f *rf, struct irdma_ceq *iwceq, if (rf->msix_shared && !ceq_id) { snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, "irdma-%s-AEQCEQ-0", dev_name(&rf->pcidev->dev)); - tasklet_setup(&rf->dpc_tasklet, irdma_dpc); + INIT_WORK(&rf->dpc_work, irdma_dpc); status = request_irq(msix_vec->irq, irdma_irq_handler, 0, msix_vec->name, rf); } else { snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, "irdma-%s-CEQ-%d", dev_name(&rf->pcidev->dev), ceq_id); - tasklet_setup(&iwceq->dpc_tasklet, irdma_ceq_dpc); + INIT_WORK(&iwceq->dpc_work, irdma_ceq_dpc); status = request_irq(msix_vec->irq, irdma_ceq_handler, 0, msix_vec->name, iwceq); @@ -1162,7 +1162,7 @@ static int irdma_cfg_aeq_vector(struct irdma_pci_f *rf) if (!rf->msix_shared) { snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, "irdma-%s-AEQ", dev_name(&rf->pcidev->dev)); - tasklet_setup(&rf->dpc_tasklet, irdma_dpc); + INIT_WORK(&rf->dpc_work, irdma_dpc); ret = request_irq(msix_vec->irq, irdma_irq_handler, 0, msix_vec->name, rf); } diff --git a/drivers/infiniband/hw/irdma/main.h b/drivers/infiniband/hw/irdma/main.h index b65bc2ea542f..54301093b746 100644 --- a/drivers/infiniband/hw/irdma/main.h +++ b/drivers/infiniband/hw/irdma/main.h @@ -30,6 +30,7 @@ #endif #include #include +#include #include #include #include @@ -192,7 +193,7 @@ struct irdma_ceq { u32 irq; u32 msix_idx; struct irdma_pci_f *rf; - struct tasklet_struct dpc_tasklet; + struct work_struct dpc_work; spinlock_t ce_lock; /* sync cq destroy with cq completion event notification */ }; @@ -316,7 +317,7 @@ struct irdma_pci_f { struct mc_table_list mc_qht_list; struct irdma_msix_vector *iw_msixtbl; struct irdma_qvlist_info *iw_qvlist; - struct tasklet_struct dpc_tasklet; + struct work_struct dpc_work; struct msix_entry *msix_entries; struct irdma_dma_mem obj_mem; struct irdma_dma_mem obj_next; diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 26c615772be3..d2ebaf31ce5a 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -53,6 +53,7 @@ #include #include #include +#include #include #include @@ -562,7 +563,7 @@ struct qib_pportdata { u8 sdma_generation; u8 sdma_intrequest; - struct tasklet_struct sdma_sw_clean_up_task + struct work_struct sdma_sw_clean_up_task ____cacheline_aligned_in_smp; wait_queue_head_t state_wait; /* for state_wanted */ @@ -1068,8 +1069,8 @@ struct qib_devdata { u8 psxmitwait_supported; /* cycle length of PS* counters in HW (in picoseconds) */ u16 psxmitwait_check_rate; - /* high volume overflow errors defered to tasklet */ - struct tasklet_struct error_tasklet; + /* high volume overflow errors defered to work */ + struct work_struct error_work; int assigned_node_id; /* NUMA node closest to HCA */ }; diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index f93906d8fc09..c3325071f2b3 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -46,6 +46,7 @@ #include #ifdef CONFIG_INFINIBAND_QIB_DCA #include +#include #endif #include "qib.h" @@ -1711,9 +1712,9 @@ static noinline void handle_7322_errors(struct qib_devdata *dd) return; } -static void qib_error_tasklet(struct tasklet_struct *t) +static void qib_error_work(struct work_struct *t) { - struct qib_devdata *dd = from_tasklet(dd, t, error_tasklet); + struct qib_devdata *dd = from_work(dd, t, error_work); handle_7322_errors(dd); qib_write_kreg(dd, kr_errmask, dd->cspec->errormask); @@ -3001,7 +3002,7 @@ static noinline void unlikely_7322_intr(struct qib_devdata *dd, u64 istat) unknown_7322_gpio_intr(dd); if (istat & QIB_I_C_ERROR) { qib_write_kreg(dd, kr_errmask, 0ULL); - tasklet_schedule(&dd->error_tasklet); + queue_work(system_bh_wq, &dd->error_work); } if (istat & INT_MASK_P(Err, 0) && dd->rcd[0]) handle_7322_p_errors(dd->rcd[0]->ppd); @@ -3515,7 +3516,7 @@ static void qib_setup_7322_interrupt(struct qib_devdata *dd, int clearpend) for (i = 0; i < ARRAY_SIZE(redirect); i++) qib_write_kreg(dd, kr_intredirect + i, redirect[i]); dd->cspec->main_int_mask = mask; - tasklet_setup(&dd->error_tasklet, qib_error_tasklet); + INIT_WORK(&dd->error_work, qib_error_work); } /** diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c index a1c20ffb4490..79e31921e384 100644 --- a/drivers/infiniband/hw/qib/qib_rc.c +++ b/drivers/infiniband/hw/qib/qib_rc.c @@ -593,7 +593,7 @@ int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags) * * This is called from qib_rc_rcv() and qib_kreceive(). * Note that RDMA reads and atomics are handled in the - * send side QP state and tasklet. + * send side QP state and work. */ void qib_send_rc_ack(struct rvt_qp *qp) { @@ -670,7 +670,7 @@ void qib_send_rc_ack(struct rvt_qp *qp) /* * We are out of PIO buffers at the moment. * Pass responsibility for sending the ACK to the - * send tasklet so that when a PIO buffer becomes + * send work so that when a PIO buffer becomes * available, the ACK is sent ahead of other outgoing * packets. */ @@ -715,7 +715,7 @@ void qib_send_rc_ack(struct rvt_qp *qp) qp->s_nak_state = qp->r_nak_state; qp->s_ack_psn = qp->r_ack_psn; - /* Schedule the send tasklet. */ + /* Schedule the send work. */ qib_schedule_send(qp); } unlock: @@ -806,7 +806,7 @@ static void reset_psn(struct rvt_qp *qp, u32 psn) qp->s_psn = psn; /* * Set RVT_S_WAIT_PSN as qib_rc_complete() may start the timer - * asynchronously before the send tasklet can get scheduled. + * asynchronously before the send work can get scheduled. * Doing it in qib_make_rc_req() is too late. */ if ((qib_cmp24(qp->s_psn, qp->s_sending_hpsn) <= 0) && @@ -1292,7 +1292,7 @@ static void qib_rc_rcv_resp(struct qib_ibport *ibp, (qib_cmp24(qp->s_sending_psn, qp->s_sending_hpsn) <= 0)) { /* - * If send tasklet not running attempt to progress + * If send work not running attempt to progress * SDMA queue. */ if (!(qp->s_flags & RVT_S_BUSY)) { @@ -1629,7 +1629,7 @@ static int qib_rc_rcv_error(struct ib_other_headers *ohdr, case OP(FETCH_ADD): { /* * If we didn't find the atomic request in the ack queue - * or the send tasklet is already backed up to send an + * or the send work is already backed up to send an * earlier entry, we can ignore this request. */ if (!e || e->opcode != (u8) opcode || old_req) @@ -1996,7 +1996,7 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, qp->r_nak_state = 0; qp->r_head_ack_queue = next; - /* Schedule the send tasklet. */ + /* Schedule the send work. */ qp->s_flags |= RVT_S_RESP_PENDING; qib_schedule_send(qp); @@ -2059,7 +2059,7 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, qp->r_nak_state = 0; qp->r_head_ack_queue = next; - /* Schedule the send tasklet. */ + /* Schedule the send work. */ qp->s_flags |= RVT_S_RESP_PENDING; qib_schedule_send(qp); diff --git a/drivers/infiniband/hw/qib/qib_ruc.c b/drivers/infiniband/hw/qib/qib_ruc.c index 1fa21938f310..f44a2a8b4b1e 100644 --- a/drivers/infiniband/hw/qib/qib_ruc.c +++ b/drivers/infiniband/hw/qib/qib_ruc.c @@ -257,7 +257,7 @@ void _qib_do_send(struct work_struct *work) * @qp: pointer to the QP * * Process entries in the send work queue until credit or queue is - * exhausted. Only allow one CPU to send a packet per QP (tasklet). + * exhausted. Only allow one CPU to send a packet per QP (work). * Otherwise, two threads could send packets out of order. */ void qib_do_send(struct rvt_qp *qp) @@ -299,7 +299,7 @@ void qib_do_send(struct rvt_qp *qp) spin_unlock_irqrestore(&qp->s_lock, flags); /* * If the packet cannot be sent now, return and - * the send tasklet will be woken up later. + * the send work will be woken up later. */ if (qib_verbs_send(qp, priv->s_hdr, qp->s_hdrwords, qp->s_cur_sge, qp->s_cur_size)) diff --git a/drivers/infiniband/hw/qib/qib_sdma.c b/drivers/infiniband/hw/qib/qib_sdma.c index 5e86cbf7d70e..facb3964d2ec 100644 --- a/drivers/infiniband/hw/qib/qib_sdma.c +++ b/drivers/infiniband/hw/qib/qib_sdma.c @@ -34,6 +34,7 @@ #include #include #include +#include #include "qib.h" #include "qib_common.h" @@ -62,7 +63,7 @@ static void sdma_get(struct qib_sdma_state *); static void sdma_put(struct qib_sdma_state *); static void sdma_set_state(struct qib_pportdata *, enum qib_sdma_states); static void sdma_start_sw_clean_up(struct qib_pportdata *); -static void sdma_sw_clean_up_task(struct tasklet_struct *); +static void sdma_sw_clean_up_task(struct work_struct *); static void unmap_desc(struct qib_pportdata *, unsigned); static void sdma_get(struct qib_sdma_state *ss) @@ -119,9 +120,9 @@ static void clear_sdma_activelist(struct qib_pportdata *ppd) } } -static void sdma_sw_clean_up_task(struct tasklet_struct *t) +static void sdma_sw_clean_up_task(struct work_struct *t) { - struct qib_pportdata *ppd = from_tasklet(ppd, t, + struct qib_pportdata *ppd = from_work(ppd, t, sdma_sw_clean_up_task); unsigned long flags; @@ -188,7 +189,7 @@ static void sdma_sw_tear_down(struct qib_pportdata *ppd) static void sdma_start_sw_clean_up(struct qib_pportdata *ppd) { - tasklet_hi_schedule(&ppd->sdma_sw_clean_up_task); + queue_work(system_bh_highpri_wq, &ppd->sdma_sw_clean_up_task); } static void sdma_set_state(struct qib_pportdata *ppd, @@ -437,7 +438,7 @@ int qib_setup_sdma(struct qib_pportdata *ppd) INIT_LIST_HEAD(&ppd->sdma_activelist); - tasklet_setup(&ppd->sdma_sw_clean_up_task, sdma_sw_clean_up_task); + INIT_WORK(&ppd->sdma_sw_clean_up_task, sdma_sw_clean_up_task); ret = dd->f_init_sdma_regs(ppd); if (ret) diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c index e6203e26cc06..efe4689151c2 100644 --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -1306,7 +1306,7 @@ int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err) rdi->driver_f.notify_error_qp(qp); - /* Schedule the sending tasklet to drain the send work queue. */ + /* Schedule the sending work to drain the send work queue. */ if (READ_ONCE(qp->s_last) != qp->s_head) rdi->driver_f.schedule_send(qp); From patchwork Wed Mar 27 16:03:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606982 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 14C01132805; Wed, 27 Mar 2024 16:03:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais Signed-off-by: Duncan Sands --- drivers/usb/atm/usbatm.c | 55 +++++++++++++++-------------- drivers/usb/atm/usbatm.h | 3 +- drivers/usb/core/hcd.c | 22 ++++++------ drivers/usb/gadget/udc/fsl_qe_udc.c | 21 +++++------ drivers/usb/gadget/udc/fsl_qe_udc.h | 4 +-- drivers/usb/host/ehci-sched.c | 2 +- drivers/usb/host/fhci-hcd.c | 3 +- drivers/usb/host/fhci-sched.c | 10 +++--- drivers/usb/host/fhci.h | 5 +-- drivers/usb/host/xhci-dbgcap.h | 3 +- drivers/usb/host/xhci-dbgtty.c | 15 ++++---- include/linux/usb/cdc_ncm.h | 2 +- include/linux/usb/usbnet.h | 2 +- 13 files changed, 76 insertions(+), 71 deletions(-) diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index 2da6615fbb6f..74849f24e52e 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -17,7 +17,7 @@ * - Removed the limit on the number of devices * - Module now autoloads on device plugin * - Merged relevant parts of sarlib - * - Replaced the kernel thread with a tasklet + * - Replaced the kernel thread with a work * - New packet transmission code * - Changed proc file contents * - Fixed all known SMP races @@ -68,6 +68,7 @@ #include #include #include +#include #ifdef VERBOSE_DEBUG static int usbatm_print_packet(struct usbatm_data *instance, const unsigned char *data, int len); @@ -249,7 +250,7 @@ static void usbatm_complete(struct urb *urb) /* vdbg("%s: urb 0x%p, status %d, actual_length %d", __func__, urb, status, urb->actual_length); */ - /* Can be invoked from task context, protect against interrupts */ + /* Can be invoked from work context, protect against interrupts */ spin_lock_irqsave(&channel->lock, flags); /* must add to the back when receiving; doesn't matter when sending */ @@ -269,7 +270,7 @@ static void usbatm_complete(struct urb *urb) /* throttle processing in case of an error */ mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS)); } else - tasklet_schedule(&channel->tasklet); + queue_work(system_bh_wq, &channel->work); } @@ -511,10 +512,10 @@ static unsigned int usbatm_write_cells(struct usbatm_data *instance, ** receive ** **************/ -static void usbatm_rx_process(struct tasklet_struct *t) +static void usbatm_rx_process(struct work_struct *t) { - struct usbatm_data *instance = from_tasklet(instance, t, - rx_channel.tasklet); + struct usbatm_data *instance = from_work(instance, t, + rx_channel.work); struct urb *urb; while ((urb = usbatm_pop_urb(&instance->rx_channel))) { @@ -565,10 +566,10 @@ static void usbatm_rx_process(struct tasklet_struct *t) ** send ** ***********/ -static void usbatm_tx_process(struct tasklet_struct *t) +static void usbatm_tx_process(struct work_struct *t) { - struct usbatm_data *instance = from_tasklet(instance, t, - tx_channel.tasklet); + struct usbatm_data *instance = from_work(instance, t, + tx_channel.work); struct sk_buff *skb = instance->current_skb; struct urb *urb = NULL; const unsigned int buf_size = instance->tx_channel.buf_size; @@ -632,13 +633,13 @@ static void usbatm_cancel_send(struct usbatm_data *instance, } spin_unlock_irq(&instance->sndqueue.lock); - tasklet_disable(&instance->tx_channel.tasklet); + disable_work_sync(&instance->tx_channel.work); if ((skb = instance->current_skb) && (UDSL_SKB(skb)->atm.vcc == vcc)) { atm_dbg(instance, "%s: popping current skb (0x%p)\n", __func__, skb); instance->current_skb = NULL; usbatm_pop(vcc, skb); } - tasklet_enable(&instance->tx_channel.tasklet); + enable_and_queue_work(system_bh_wq, &instance->tx_channel.work); } static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) @@ -677,7 +678,7 @@ static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) ctrl->crc = crc32_be(~0, skb->data, skb->len); skb_queue_tail(&instance->sndqueue, skb); - tasklet_schedule(&instance->tx_channel.tasklet); + queue_work(system_bh_wq, &instance->tx_channel.work); return 0; @@ -695,8 +696,8 @@ static void usbatm_destroy_instance(struct kref *kref) { struct usbatm_data *instance = container_of(kref, struct usbatm_data, refcount); - tasklet_kill(&instance->rx_channel.tasklet); - tasklet_kill(&instance->tx_channel.tasklet); + cancel_work_sync(&instance->rx_channel.work); + cancel_work_sync(&instance->tx_channel.work); usb_put_dev(instance->usb_dev); kfree(instance); } @@ -823,12 +824,12 @@ static int usbatm_atm_open(struct atm_vcc *vcc) vcc->dev_data = new; - tasklet_disable(&instance->rx_channel.tasklet); + disable_work_sync(&instance->rx_channel.work); instance->cached_vcc = new; instance->cached_vpi = vpi; instance->cached_vci = vci; list_add(&new->list, &instance->vcc_list); - tasklet_enable(&instance->rx_channel.tasklet); + enable_and_queue_work(system_bh_wq, &instance->rx_channel.work); set_bit(ATM_VF_ADDR, &vcc->flags); set_bit(ATM_VF_PARTIAL, &vcc->flags); @@ -858,14 +859,14 @@ static void usbatm_atm_close(struct atm_vcc *vcc) mutex_lock(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ - tasklet_disable(&instance->rx_channel.tasklet); + disable_work_sync(&instance->rx_channel.work); if (instance->cached_vcc == vcc_data) { instance->cached_vcc = NULL; instance->cached_vpi = ATM_VPI_UNSPEC; instance->cached_vci = ATM_VCI_UNSPEC; } list_del(&vcc_data->list); - tasklet_enable(&instance->rx_channel.tasklet); + enable_and_queue_work(system_bh_wq, &instance->rx_channel.work); kfree_skb(vcc_data->sarb); vcc_data->sarb = NULL; @@ -991,18 +992,18 @@ static int usbatm_heavy_init(struct usbatm_data *instance) return 0; } -static void usbatm_tasklet_schedule(struct timer_list *t) +static void usbatm_queue_work(system_bh_wq, struct timer_list *t) { struct usbatm_channel *channel = from_timer(channel, t, delay); - tasklet_schedule(&channel->tasklet); + queue_work(system_bh_wq, &channel->work); } static void usbatm_init_channel(struct usbatm_channel *channel) { spin_lock_init(&channel->lock); INIT_LIST_HEAD(&channel->list); - timer_setup(&channel->delay, usbatm_tasklet_schedule, 0); + timer_setup(&channel->delay, usbatm_queue_work, 0); } int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, @@ -1074,8 +1075,8 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, usbatm_init_channel(&instance->rx_channel); usbatm_init_channel(&instance->tx_channel); - tasklet_setup(&instance->rx_channel.tasklet, usbatm_rx_process); - tasklet_setup(&instance->tx_channel.tasklet, usbatm_tx_process); + INIT_WORK(&instance->rx_channel.work, usbatm_rx_process); + INIT_WORK(&instance->tx_channel.work, usbatm_tx_process); instance->rx_channel.stride = ATM_CELL_SIZE + driver->rx_padding; instance->tx_channel.stride = ATM_CELL_SIZE + driver->tx_padding; instance->rx_channel.usbatm = instance->tx_channel.usbatm = instance; @@ -1231,8 +1232,8 @@ void usbatm_usb_disconnect(struct usb_interface *intf) vcc_release_async(vcc_data->vcc, -EPIPE); mutex_unlock(&instance->serialize); - tasklet_disable(&instance->rx_channel.tasklet); - tasklet_disable(&instance->tx_channel.tasklet); + disable_work_sync(&instance->rx_channel.work); + disable_work_sync(&instance->tx_channel.work); for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) usb_kill_urb(instance->urbs[i]); @@ -1245,8 +1246,8 @@ void usbatm_usb_disconnect(struct usb_interface *intf) INIT_LIST_HEAD(&instance->rx_channel.list); INIT_LIST_HEAD(&instance->tx_channel.list); - tasklet_enable(&instance->rx_channel.tasklet); - tasklet_enable(&instance->tx_channel.tasklet); + enable_and_queue_work(system_bh_wq, &instance->rx_channel.work); + enable_and_queue_work(system_bh_wq, &instance->tx_channel.work); if (instance->atm_dev && instance->driver->atm_stop) instance->driver->atm_stop(instance, instance->atm_dev); diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h index d96658e2e209..3452f8c2e1e5 100644 --- a/drivers/usb/atm/usbatm.h +++ b/drivers/usb/atm/usbatm.h @@ -21,6 +21,7 @@ #include #include #include +#include /* #define VERBOSE_DEBUG @@ -109,7 +110,7 @@ struct usbatm_channel { unsigned int packet_size; /* endpoint maxpacket */ spinlock_t lock; struct list_head list; - struct tasklet_struct tasklet; + struct work_struct work; struct timer_list delay; struct usbatm_data *usbatm; }; diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index c0e005670d67..88d8e1c366cd 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -37,6 +37,7 @@ #include #include #include +#include #include "usb.h" #include "phy.h" @@ -884,7 +885,7 @@ static void usb_bus_init (struct usb_bus *bus) * usb_register_bus - registers the USB host controller with the usb core * @bus: pointer to the bus to register * - * Context: task context, might sleep. + * Context: work context, might sleep. * * Assigns a bus number, and links the controller into usbcore data * structures so that it can be seen by scanning the bus list. @@ -920,7 +921,7 @@ static int usb_register_bus(struct usb_bus *bus) * usb_deregister_bus - deregisters the USB host controller * @bus: pointer to the bus to deregister * - * Context: task context, might sleep. + * Context: work context, might sleep. * * Recycles the bus number, and unlinks the controller from usbcore data * structures so that it won't be seen by scanning the bus list. @@ -1640,7 +1641,7 @@ static void __usb_hcd_giveback_urb(struct urb *urb) /* pass ownership to the completion handler */ urb->status = status; /* - * This function can be called in task context inside another remote + * This function can be called in work context inside another remote * coverage collection section, but kcov doesn't support that kind of * recursion yet. Only collect coverage in softirq context for now. */ @@ -1662,10 +1663,9 @@ static void __usb_hcd_giveback_urb(struct urb *urb) usb_put_urb(urb); } -static void usb_giveback_urb_bh(struct work_struct *work) +static void usb_giveback_urb_bh(struct work_struct *t) { - struct giveback_urb_bh *bh = - container_of(work, struct giveback_urb_bh, bh); + struct giveback_urb_bh *bh = from_work(bh, t, bh); struct list_head local_list; spin_lock_irq(&bh->lock); @@ -1705,7 +1705,7 @@ static void usb_giveback_urb_bh(struct work_struct *work) * @status: completion status code for the URB. * * Context: atomic. The completion callback is invoked in caller's context. - * For HCDs with HCD_BH flag set, the completion callback is invoked in BH + * For HCDs with HCD_BH flag set, the completion callback is invoked in work * context (except for URBs submitted to the root hub which always complete in * caller's context). * @@ -1724,7 +1724,7 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status) struct giveback_urb_bh *bh; bool running; - /* pass status to BH via unlinked */ + /* pass status to work via unlinked */ if (likely(!urb->unlinked)) urb->unlinked = status; @@ -2611,7 +2611,7 @@ EXPORT_SYMBOL_GPL(__usb_create_hcd); * @primary_hcd: a pointer to the usb_hcd structure that is sharing the * PCI device. Only allocate certain resources for the primary HCD * - * Context: task context, might sleep. + * Context: work context, might sleep. * * Allocate a struct usb_hcd, with extra space at the end for the * HC driver's private data. Initialize the generic members of the @@ -2634,7 +2634,7 @@ EXPORT_SYMBOL_GPL(usb_create_shared_hcd); * @dev: device for this HC, stored in hcd->self.controller * @bus_name: value to store in hcd->self.bus_name * - * Context: task context, might sleep. + * Context: work context, might sleep. * * Allocate a struct usb_hcd, with extra space at the end for the * HC driver's private data. Initialize the generic members of the @@ -3001,7 +3001,7 @@ EXPORT_SYMBOL_GPL(usb_add_hcd); * usb_remove_hcd - shutdown processing for generic HCDs * @hcd: the usb_hcd structure to remove * - * Context: task context, might sleep. + * Context: work context, might sleep. * * Disconnects the root hub, then reverses the effects of usb_add_hcd(), * invoking the HCD's stop() method. diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 4e88681a79b6..ae29d946a972 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -930,9 +931,9 @@ static int qe_ep_rxframe_handle(struct qe_ep *ep) return 0; } -static void ep_rx_tasklet(struct tasklet_struct *t) +static void ep_rx_work(struct work_struct *t) { - struct qe_udc *udc = from_tasklet(udc, t, rx_tasklet); + struct qe_udc *udc = from_work(udc, t, rx_work); struct qe_ep *ep; struct qe_frame *pframe; struct qe_bd __iomem *bd; @@ -945,9 +946,9 @@ static void ep_rx_tasklet(struct tasklet_struct *t) for (i = 1; i < USB_MAX_ENDPOINTS; i++) { ep = &udc->eps[i]; - if (ep->dir == USB_DIR_IN || ep->enable_tasklet == 0) { + if (ep->dir == USB_DIR_IN || ep->enable_work == 0) { dev_dbg(udc->dev, - "This is a transmit ep or disable tasklet!\n"); + "This is a transmit ep or disable work!\n"); continue; } @@ -1012,7 +1013,7 @@ static void ep_rx_tasklet(struct tasklet_struct *t) if (ep->localnack) ep_recycle_rxbds(ep); - ep->enable_tasklet = 0; + ep->enable_work = 0; } /* for i=1 */ spin_unlock_irqrestore(&udc->lock, flags); @@ -1057,8 +1058,8 @@ static int qe_ep_rx(struct qe_ep *ep) return 0; } - tasklet_schedule(&udc->rx_tasklet); - ep->enable_tasklet = 1; + queue_work(system_bh_wq, &udc->rx_work); + ep->enable_work = 1; return 0; } @@ -2559,7 +2560,7 @@ static int qe_udc_probe(struct platform_device *ofdev) DMA_TO_DEVICE); } - tasklet_setup(&udc->rx_tasklet, ep_rx_tasklet); + INIT_WORK(&udc->rx_work, ep_rx_work); /* request irq and disable DR */ udc->usb_irq = irq_of_parse_and_map(np, 0); if (!udc->usb_irq) { @@ -2636,7 +2637,7 @@ static void qe_udc_remove(struct platform_device *ofdev) usb_del_gadget_udc(&udc->gadget); udc->done = &done; - tasklet_disable(&udc->rx_tasklet); + disable_work_sync(&udc->rx_work); if (udc->nullmap) { dma_unmap_single(udc->gadget.dev.parent, @@ -2671,7 +2672,7 @@ static void qe_udc_remove(struct platform_device *ofdev) free_irq(udc->usb_irq, udc); irq_dispose_mapping(udc->usb_irq); - tasklet_kill(&udc->rx_tasklet); + cancel_work_sync(&udc->rx_work); iounmap(udc->usb_regs); diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.h b/drivers/usb/gadget/udc/fsl_qe_udc.h index 53ca0ff7c2cb..1de87c318460 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.h +++ b/drivers/usb/gadget/udc/fsl_qe_udc.h @@ -293,7 +293,7 @@ struct qe_ep { u8 init; u8 already_seen; - u8 enable_tasklet; + u8 enable_work; u8 setup_stage; u32 last_io; /* timestamp */ @@ -353,7 +353,7 @@ struct qe_udc { unsigned int usb_irq; struct usb_ctlr __iomem *usb_regs; - struct tasklet_struct rx_tasklet; + struct work_struct rx_work; struct completion *done; /* to make sure release() is done */ }; diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 7e834587e7de..98823cf9dd0a 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -682,7 +682,7 @@ static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) /* * It is common only one intr URB is scheduled on one qh, and - * given complete() is run in tasklet context, introduce a bit + * given complete() is run in work context, introduce a bit * delay to avoid unlink qh too early. */ static void start_unlink_intr_wait(struct ehci_hcd *ehci, diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c index 9a1b5224f239..5358bb688acb 100644 --- a/drivers/usb/host/fhci-hcd.c +++ b/drivers/usb/host/fhci-hcd.c @@ -211,8 +211,7 @@ static int fhci_mem_init(struct fhci_hcd *fhci) INIT_LIST_HEAD(&fhci->empty_tds); /* initialize work queue to handle done list */ - fhci_tasklet.data = (unsigned long)fhci; - fhci->process_done_task = &fhci_tasklet; + INIT_WORK(&fhci->process_done_task, process_done_list); for (i = 0; i < MAX_TDS; i++) { struct td *td; diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c index a45ede80edfc..9033cce28014 100644 --- a/drivers/usb/host/fhci-sched.c +++ b/drivers/usb/host/fhci-sched.c @@ -628,13 +628,13 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) * is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning * the (re-reversed) done list as this does. */ -static void process_done_list(unsigned long data) +static void process_done_list(struct work_struct *t) { struct urb *urb; struct ed *ed; struct td *td; struct urb_priv *urb_priv; - struct fhci_hcd *fhci = (struct fhci_hcd *)data; + struct fhci_hcd *fhci = from_work(fhci, t, process_done_task); disable_irq(fhci->timer->irq); disable_irq(fhci_to_hcd(fhci)->irq); @@ -677,13 +677,13 @@ static void process_done_list(unsigned long data) enable_irq(fhci_to_hcd(fhci)->irq); } -DECLARE_TASKLET_OLD(fhci_tasklet, process_done_list); +DECLARE_WORK(fhci_work, process_done_list); /* transfer complted callback */ u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci) { - if (!fhci->process_done_task->state) - tasklet_schedule(fhci->process_done_task); + if (!fhci->process_done_task) + queue_work(system_bh_wq, fhci->process_done_task); return 0; } diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h index 1f57b0989485..7cd613762249 100644 --- a/drivers/usb/host/fhci.h +++ b/drivers/usb/host/fhci.h @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -254,7 +255,7 @@ struct fhci_hcd { struct virtual_root_hub *vroot_hub; /* the virtual root hub */ int active_urbs; struct fhci_controller_list *hc_list; - struct tasklet_struct *process_done_task; /* tasklet for done list */ + struct work_struct *process_done_task; /* work for done list */ struct list_head empty_eds; struct list_head empty_tds; @@ -549,7 +550,7 @@ void fhci_init_ep_registers(struct fhci_usb *usb, void fhci_ep0_free(struct fhci_usb *usb); /* fhci-sched.c */ -extern struct tasklet_struct fhci_tasklet; +extern struct work_struct fhci_work; void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt); void fhci_flush_all_transmissions(struct fhci_usb *usb); void fhci_schedule_transactions(struct fhci_usb *usb); diff --git a/drivers/usb/host/xhci-dbgcap.h b/drivers/usb/host/xhci-dbgcap.h index 92661b555c2a..5660f0cd6d73 100644 --- a/drivers/usb/host/xhci-dbgcap.h +++ b/drivers/usb/host/xhci-dbgcap.h @@ -11,6 +11,7 @@ #include #include +#include struct dbc_regs { __le32 capability; @@ -107,7 +108,7 @@ struct dbc_port { struct list_head read_pool; struct list_head read_queue; unsigned int n_read; - struct tasklet_struct push; + struct work_struct push; struct list_head write_pool; struct kfifo write_fifo; diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index b74e98e94393..dec2280b4ae9 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "xhci.h" #include "xhci-dbgcap.h" @@ -108,7 +109,7 @@ dbc_read_complete(struct xhci_dbc *dbc, struct dbc_request *req) spin_lock_irqsave(&port->port_lock, flags); list_add_tail(&req->list_pool, &port->read_queue); - tasklet_schedule(&port->push); + queue_work(system_bh_wq, &port->push); spin_unlock_irqrestore(&port->port_lock, flags); } @@ -278,7 +279,7 @@ static void dbc_tty_unthrottle(struct tty_struct *tty) unsigned long flags; spin_lock_irqsave(&port->port_lock, flags); - tasklet_schedule(&port->push); + queue_work(system_bh_wq, &port->push); spin_unlock_irqrestore(&port->port_lock, flags); } @@ -294,14 +295,14 @@ static const struct tty_operations dbc_tty_ops = { .unthrottle = dbc_tty_unthrottle, }; -static void dbc_rx_push(struct tasklet_struct *t) +static void dbc_rx_push(struct work_struct *t) { struct dbc_request *req; struct tty_struct *tty; unsigned long flags; bool do_push = false; bool disconnect = false; - struct dbc_port *port = from_tasklet(port, t, push); + struct dbc_port *port = from_work(port, t, push); struct list_head *queue = &port->read_queue; spin_lock_irqsave(&port->port_lock, flags); @@ -355,7 +356,7 @@ static void dbc_rx_push(struct tasklet_struct *t) if (!list_empty(queue) && tty) { if (!tty_throttled(tty)) { if (do_push) - tasklet_schedule(&port->push); + queue_work(system_bh_wq, &port->push); else pr_warn("ttyDBC0: RX not scheduled?\n"); } @@ -388,7 +389,7 @@ xhci_dbc_tty_init_port(struct xhci_dbc *dbc, struct dbc_port *port) { tty_port_init(&port->port); spin_lock_init(&port->port_lock); - tasklet_setup(&port->push, dbc_rx_push); + INIT_WORK(&port->push, dbc_rx_push); INIT_LIST_HEAD(&port->read_pool); INIT_LIST_HEAD(&port->read_queue); INIT_LIST_HEAD(&port->write_pool); @@ -400,7 +401,7 @@ xhci_dbc_tty_init_port(struct xhci_dbc *dbc, struct dbc_port *port) static void xhci_dbc_tty_exit_port(struct dbc_port *port) { - tasklet_kill(&port->push); + cancel_work_sync(&port->push); tty_port_destroy(&port->port); } diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index 2d207cb4837d..8775580852f9 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -96,7 +96,7 @@ struct cdc_ncm_ctx { struct usb_cdc_ncm_ntb_parameters ncm_parm; struct hrtimer tx_timer; - struct tasklet_struct bh; + struct work_struct bh; struct usbnet *dev; diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 9f08a584d707..522c533a966b 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -58,7 +58,7 @@ struct usbnet { unsigned interrupt_count; struct mutex interrupt_mutex; struct usb_anchor deferred; - struct tasklet_struct bh; + struct work_struct bh; struct work_struct kevent; unsigned long flags; From patchwork Wed Mar 27 16:03:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606981 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2F512132814; Wed, 27 Mar 2024 16:03:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555408; cv=none; b=Ak6HxIvNUSFoZoDQh9Ot+SVi6nQEVEI4Gc4ZcPnQn5Ardy2/kvdd5LHhh11tJb3XYLeOHt9Ao1OIFDSXq9LRX07NrRtQc87lDYJidRRTUKQXoGd4WXgRt8z5L5lHZxN/HbhHAbW7ZTDz1ClRfCJiTuG+0GbBeDHJPMZjh2Ae6D0= ARC-Message-Signature: i=1; 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Wed, 27 Mar 2024 09:03:21 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com EA6502087EAD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555402; bh=gG4HkPGUSv7UfrkIT/fLFeBn/l/I1IKATXvhPYPLyTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hZ9tbK6alrLBbs0gi/RA/rTTHk4Szr/ALK9qb/ljV5Z39ltd2AcQcwhzALpCC1wKd GIeCnfcSDRZCYwM84p9o8SFEII+jFkZGxJDmCb1a1V3QFisDxrwsPRClaYIO9y61bo AS1FoX6+/lM0tmj1WVEb896g3y43UOh3+1q2HAqg= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 5/9] mailbox: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:10 +0000 Message-Id: <20240327160314.9982-6-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais --- drivers/mailbox/bcm-pdc-mailbox.c | 21 +++++++++++---------- drivers/mailbox/imx-mailbox.c | 16 ++++++++-------- 2 files changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c index 1768d3d5aaa0..242e7504a628 100644 --- a/drivers/mailbox/bcm-pdc-mailbox.c +++ b/drivers/mailbox/bcm-pdc-mailbox.c @@ -43,6 +43,7 @@ #include #include #include +#include #define PDC_SUCCESS 0 @@ -293,8 +294,8 @@ struct pdc_state { unsigned int pdc_irq; - /* tasklet for deferred processing after DMA rx interrupt */ - struct tasklet_struct rx_tasklet; + /* work for deferred processing after DMA rx interrupt */ + struct work_struct rx_work; /* Number of bytes of receive status prior to each rx frame */ u32 rx_status_len; @@ -952,18 +953,18 @@ static irqreturn_t pdc_irq_handler(int irq, void *data) iowrite32(intstatus, pdcs->pdc_reg_vbase + PDC_INTSTATUS_OFFSET); /* Wakeup IRQ thread */ - tasklet_schedule(&pdcs->rx_tasklet); + queue_work(system_bh_wq, &pdcs->rx_work); return IRQ_HANDLED; } /** - * pdc_tasklet_cb() - Tasklet callback that runs the deferred processing after + * pdc_work_cb() - Work callback that runs the deferred processing after * a DMA receive interrupt. Reenables the receive interrupt. * @t: Pointer to the Altera sSGDMA channel structure */ -static void pdc_tasklet_cb(struct tasklet_struct *t) +static void pdc_work_cb(struct work_struct *t) { - struct pdc_state *pdcs = from_tasklet(pdcs, t, rx_tasklet); + struct pdc_state *pdcs = from_work(pdcs, t, rx_work); pdc_receive(pdcs); @@ -1577,8 +1578,8 @@ static int pdc_probe(struct platform_device *pdev) pdc_hw_init(pdcs); - /* Init tasklet for deferred DMA rx processing */ - tasklet_setup(&pdcs->rx_tasklet, pdc_tasklet_cb); + /* Init work for deferred DMA rx processing */ + INIT_WORK(&pdcs->rx_work, pdc_work_cb); err = pdc_interrupts_init(pdcs); if (err) @@ -1595,7 +1596,7 @@ static int pdc_probe(struct platform_device *pdev) return PDC_SUCCESS; cleanup_buf_pool: - tasklet_kill(&pdcs->rx_tasklet); + cancel_work_sync(&pdcs->rx_work); dma_pool_destroy(pdcs->rx_buf_pool); cleanup_ring_pool: @@ -1611,7 +1612,7 @@ static void pdc_remove(struct platform_device *pdev) pdc_free_debugfs(); - tasklet_kill(&pdcs->rx_tasklet); + cancel_work_sync(&pdcs->rx_work); pdc_hw_disable(pdcs); diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 5c1d09cad761..933727f89431 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "mailbox.h" @@ -80,7 +81,7 @@ struct imx_mu_con_priv { char irq_desc[IMX_MU_CHAN_NAME_SIZE]; enum imx_mu_chan_type type; struct mbox_chan *chan; - struct tasklet_struct txdb_tasklet; + struct work_struct txdb_work; }; struct imx_mu_priv { @@ -232,7 +233,7 @@ static int imx_mu_generic_tx(struct imx_mu_priv *priv, break; case IMX_MU_TYPE_TXDB: imx_mu_xcr_rmw(priv, IMX_MU_GCR, IMX_MU_xCR_GIRn(priv->dcfg->type, cp->idx), 0); - tasklet_schedule(&cp->txdb_tasklet); + queue_work(system_bh_wq, &cp->txdb_work); break; case IMX_MU_TYPE_TXDB_V2: imx_mu_xcr_rmw(priv, IMX_MU_GCR, IMX_MU_xCR_GIRn(priv->dcfg->type, cp->idx), 0); @@ -420,7 +421,7 @@ static int imx_mu_seco_tx(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp, } /* Simulate hack for mbox framework */ - tasklet_schedule(&cp->txdb_tasklet); + queue_work(system_bh_wq, &cp->txdb_work); break; default: @@ -484,9 +485,9 @@ static int imx_mu_seco_rxdb(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp return err; } -static void imx_mu_txdb_tasklet(unsigned long data) +static void imx_mu_txdb_work(struct work_struct *t) { - struct imx_mu_con_priv *cp = (struct imx_mu_con_priv *)data; + struct imx_mu_con_priv *cp = from_work(cp, t, txdb_work); mbox_chan_txdone(cp->chan, 0); } @@ -570,8 +571,7 @@ static int imx_mu_startup(struct mbox_chan *chan) if (cp->type == IMX_MU_TYPE_TXDB) { /* Tx doorbell don't have ACK support */ - tasklet_init(&cp->txdb_tasklet, imx_mu_txdb_tasklet, - (unsigned long)cp); + INIT_WORK(&cp->txdb_work, imx_mu_txdb_work); return 0; } @@ -615,7 +615,7 @@ static void imx_mu_shutdown(struct mbox_chan *chan) } if (cp->type == IMX_MU_TYPE_TXDB) { - tasklet_kill(&cp->txdb_tasklet); + cancel_work_sync(&cp->txdb_work); pm_runtime_put_sync(priv->dev); return; } From patchwork Wed Mar 27 16:03:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606983 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 255381350C0; Wed, 27 Mar 2024 16:03:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555409; cv=none; b=foq1m74QW7dfpdNfW3CWxyqFe+qtN/FEIXkoAEmQYY3V/xBxooPr3ZF2t7JaoylT+V2NmrrvEjwnhEqT5A1A+ulmEH3ubJn2ktDGPfzhRgBiHQBmnVkXiX/MqrLmZjwHxshaL0FubgQAjOFwmc9eHXjSGhzomcOIUE1UICOHalA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555409; c=relaxed/simple; bh=PV2UY3/c0kcvI9K7Nj67Wkz6PGLVP70JYChw6LM0MbU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=IFBDhzCo1Q3Hv83IaMEskswIok2yzeuoyWKzNW8mQ7LPZkqQQRUi6QZ+XqD1ehlQA3q4LRu3BivROrsgd1w51AqvGImeohAqOPVMxchpqhy9zy/AX7kHkHxHj2xpWGGdlnr5b5IG7LEZDm5N0NQp1P4n9OgfN2wtn50I2vBcZVI= ARC-Authentication-Results: i=1; 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bh=41Ale5uO1PTnfIKryTKC5pcjHNLS2gULLDrqEidl/kI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eq00WyCo6hcxiDCDUMRPmi0qrbBDFeudu7D2o12HCiVhgx5hyPk09CSdrCwkmdexm e1eYeDyIRpXMIVLQCm12FB4zn/X5Ye3TrTP4crCGnn6auu/kqknM2AUPJSVgHko5Fw HOHNjfcli5SdkOKdXhCQu+gocWohTCdQFuGGhSG4= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 6/9] ipmi: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:11 +0000 Message-Id: <20240327160314.9982-7-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais Tested-by: Corey Minyard Acked-by: Corey Minyard --- drivers/char/ipmi/ipmi_msghandler.c | 30 ++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index b0eedc4595b3..fce2a2dbdc82 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -36,12 +36,13 @@ #include #include #include +#include #define IPMI_DRIVER_VERSION "39.2" static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); static int ipmi_init_msghandler(void); -static void smi_recv_tasklet(struct tasklet_struct *t); +static void smi_recv_work(struct work_struct *t); static void handle_new_recv_msgs(struct ipmi_smi *intf); static void need_waiter(struct ipmi_smi *intf); static int handle_one_recv_msg(struct ipmi_smi *intf, @@ -498,13 +499,13 @@ struct ipmi_smi { /* * Messages queued for delivery. If delivery fails (out of memory * for instance), They will stay in here to be processed later in a - * periodic timer interrupt. The tasklet is for handling received + * periodic timer interrupt. The work is for handling received * messages directly from the handler. */ spinlock_t waiting_rcv_msgs_lock; struct list_head waiting_rcv_msgs; atomic_t watchdog_pretimeouts_to_deliver; - struct tasklet_struct recv_tasklet; + struct work_struct recv_work; spinlock_t xmit_msgs_lock; struct list_head xmit_msgs; @@ -704,7 +705,7 @@ static void clean_up_interface_data(struct ipmi_smi *intf) struct cmd_rcvr *rcvr, *rcvr2; struct list_head list; - tasklet_kill(&intf->recv_tasklet); + cancel_work_sync(&intf->recv_work); free_smi_msg_list(&intf->waiting_rcv_msgs); free_recv_msg_list(&intf->waiting_events); @@ -1319,7 +1320,7 @@ static void free_user(struct kref *ref) { struct ipmi_user *user = container_of(ref, struct ipmi_user, refcount); - /* SRCU cleanup must happen in task context. */ + /* SRCU cleanup must happen in work context. */ queue_work(remove_work_wq, &user->remove_work); } @@ -3605,8 +3606,7 @@ int ipmi_add_smi(struct module *owner, intf->curr_seq = 0; spin_lock_init(&intf->waiting_rcv_msgs_lock); INIT_LIST_HEAD(&intf->waiting_rcv_msgs); - tasklet_setup(&intf->recv_tasklet, - smi_recv_tasklet); + INIT_WORK(&intf->recv_work, smi_recv_work); atomic_set(&intf->watchdog_pretimeouts_to_deliver, 0); spin_lock_init(&intf->xmit_msgs_lock); INIT_LIST_HEAD(&intf->xmit_msgs); @@ -4779,7 +4779,7 @@ static void handle_new_recv_msgs(struct ipmi_smi *intf) * To preserve message order, quit if we * can't handle a message. Add the message * back at the head, this is safe because this - * tasklet is the only thing that pulls the + * work is the only thing that pulls the * messages. */ list_add(&smi_msg->link, &intf->waiting_rcv_msgs); @@ -4812,10 +4812,10 @@ static void handle_new_recv_msgs(struct ipmi_smi *intf) } } -static void smi_recv_tasklet(struct tasklet_struct *t) +static void smi_recv_work(struct work_struct *t) { unsigned long flags = 0; /* keep us warning-free. */ - struct ipmi_smi *intf = from_tasklet(intf, t, recv_tasklet); + struct ipmi_smi *intf = from_work(intf, t, recv_work); int run_to_completion = intf->run_to_completion; struct ipmi_smi_msg *newmsg = NULL; @@ -4866,7 +4866,7 @@ void ipmi_smi_msg_received(struct ipmi_smi *intf, /* * To preserve message order, we keep a queue and deliver from - * a tasklet. + * a work. */ if (!run_to_completion) spin_lock_irqsave(&intf->waiting_rcv_msgs_lock, flags); @@ -4887,9 +4887,9 @@ void ipmi_smi_msg_received(struct ipmi_smi *intf, spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags); if (run_to_completion) - smi_recv_tasklet(&intf->recv_tasklet); + smi_recv_work(&intf->recv_work); else - tasklet_schedule(&intf->recv_tasklet); + queue_work(system_bh_wq, &intf->recv_work); } EXPORT_SYMBOL(ipmi_smi_msg_received); @@ -4899,7 +4899,7 @@ void ipmi_smi_watchdog_pretimeout(struct ipmi_smi *intf) return; atomic_set(&intf->watchdog_pretimeouts_to_deliver, 1); - tasklet_schedule(&intf->recv_tasklet); + queue_work(system_bh_wq, &intf->recv_work); } EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); @@ -5068,7 +5068,7 @@ static bool ipmi_timeout_handler(struct ipmi_smi *intf, flags); } - tasklet_schedule(&intf->recv_tasklet); + queue_work(system_bh_wq, &intf->recv_work); return need_timer; } From patchwork Wed Mar 27 16:03:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606985 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B9CD2136E2C; 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arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="qqrrXo5l" Received: from apais-vm1.0synte4vioeebbvidf5q0vz2ua.xx.internal.cloudapp.net (unknown [52.183.86.224]) by linux.microsoft.com (Postfix) with ESMTPSA id 5196C208B32D; Wed, 27 Mar 2024 09:03:22 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 5196C208B32D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555402; bh=Kzv1AWOVV8GwTK+7jQ3kzJ2xEaKpz9QhVy5gAjNjK7U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qqrrXo5lmMz+nfVNN9r5cBg6a0WE9kMxRH4QKGEt97MvZ5OTYlhItum+d/Dt8FYns jLTUDWcoZbdYSBF9SUUK19Rtc09qXlm1au2glAYLh7DoVs08kRZPQ+6L/Q5VrqnVTO GE1JR4g35YmWcS2Wb0B0gHhtq9fb3bDtUTSJFZuw= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 7/9] s390: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:12 +0000 Message-Id: <20240327160314.9982-8-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Note: Not tested. Please test/review. Signed-off-by: Allen Pais Acked-by: Alexandra Winter Reviewed-by: Harald Freudenberger --- drivers/s390/block/dasd.c | 42 ++++++++++++------------ drivers/s390/block/dasd_int.h | 10 +++--- drivers/s390/char/con3270.c | 27 ++++++++-------- drivers/s390/crypto/ap_bus.c | 24 +++++++------- drivers/s390/crypto/ap_bus.h | 2 +- drivers/s390/crypto/zcrypt_msgtype50.c | 2 +- drivers/s390/crypto/zcrypt_msgtype6.c | 4 +-- drivers/s390/net/ctcm_fsms.c | 4 +-- drivers/s390/net/ctcm_main.c | 15 ++++----- drivers/s390/net/ctcm_main.h | 5 +-- drivers/s390/net/ctcm_mpc.c | 12 +++---- drivers/s390/net/ctcm_mpc.h | 7 ++-- drivers/s390/net/lcs.c | 26 +++++++-------- drivers/s390/net/lcs.h | 2 +- drivers/s390/net/qeth_core_main.c | 2 +- drivers/s390/scsi/zfcp_qdio.c | 45 +++++++++++++------------- drivers/s390/scsi/zfcp_qdio.h | 9 +++--- 17 files changed, 117 insertions(+), 121 deletions(-) diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 0a97cfedd706..c6f9910f0a98 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -54,8 +54,8 @@ MODULE_LICENSE("GPL"); * SECTION: prototypes for static functions of dasd.c */ static int dasd_flush_block_queue(struct dasd_block *); -static void dasd_device_tasklet(unsigned long); -static void dasd_block_tasklet(unsigned long); +static void dasd_device_work(struct work_struct *); +static void dasd_block_work(struct work_struct *); static void do_kick_device(struct work_struct *); static void do_reload_device(struct work_struct *); static void do_requeue_requests(struct work_struct *); @@ -114,9 +114,8 @@ struct dasd_device *dasd_alloc_device(void) dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); dasd_init_chunklist(&device->ese_chunks, device->ese_mem, PAGE_SIZE * 2); spin_lock_init(&device->mem_lock); - atomic_set(&device->tasklet_scheduled, 0); - tasklet_init(&device->tasklet, dasd_device_tasklet, - (unsigned long) device); + atomic_set(&device->work_scheduled, 0); + INIT_WORK(&device->bh, dasd_device_work); INIT_LIST_HEAD(&device->ccw_queue); timer_setup(&device->timer, dasd_device_timeout, 0); INIT_WORK(&device->kick_work, do_kick_device); @@ -154,9 +153,8 @@ struct dasd_block *dasd_alloc_block(void) /* open_count = 0 means device online but not in use */ atomic_set(&block->open_count, -1); - atomic_set(&block->tasklet_scheduled, 0); - tasklet_init(&block->tasklet, dasd_block_tasklet, - (unsigned long) block); + atomic_set(&block->work_scheduled, 0); + INIT_WORK(&block->bh, dasd_block_work); INIT_LIST_HEAD(&block->ccw_queue); spin_lock_init(&block->queue_lock); INIT_LIST_HEAD(&block->format_list); @@ -2148,12 +2146,12 @@ EXPORT_SYMBOL_GPL(dasd_flush_device_queue); /* * Acquire the device lock and process queues for the device. */ -static void dasd_device_tasklet(unsigned long data) +static void dasd_device_work(struct work_struct *t) { - struct dasd_device *device = (struct dasd_device *) data; + struct dasd_device *device = from_work(device, t, bh); struct list_head final_queue; - atomic_set (&device->tasklet_scheduled, 0); + atomic_set (&device->work_scheduled, 0); INIT_LIST_HEAD(&final_queue); spin_lock_irq(get_ccwdev_lock(device->cdev)); /* Check expire time of first request on the ccw queue. */ @@ -2174,15 +2172,15 @@ static void dasd_device_tasklet(unsigned long data) } /* - * Schedules a call to dasd_tasklet over the device tasklet. + * Schedules a call to dasd_work over the device wq. */ void dasd_schedule_device_bh(struct dasd_device *device) { /* Protect against rescheduling. */ - if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) + if (atomic_cmpxchg (&device->work_scheduled, 0, 1) != 0) return; dasd_get_device(device); - tasklet_hi_schedule(&device->tasklet); + queue_work(system_bh_highpri_wq, &device->bh); } EXPORT_SYMBOL(dasd_schedule_device_bh); @@ -2595,7 +2593,7 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) else rc = -EIO; - /* kick tasklets */ + /* kick works */ dasd_schedule_device_bh(device); if (device->block) dasd_schedule_block_bh(device->block); @@ -2891,15 +2889,15 @@ static void __dasd_block_start_head(struct dasd_block *block) * block layer request queue, creates ccw requests, enqueues them on * a dasd_device and processes ccw requests that have been returned. */ -static void dasd_block_tasklet(unsigned long data) +static void dasd_block_work(struct work_struct *t) { - struct dasd_block *block = (struct dasd_block *) data; + struct dasd_block *block = from_work(block, t, bh); struct list_head final_queue; struct list_head *l, *n; struct dasd_ccw_req *cqr; struct dasd_queue *dq; - atomic_set(&block->tasklet_scheduled, 0); + atomic_set(&block->work_scheduled, 0); INIT_LIST_HEAD(&final_queue); spin_lock_irq(&block->queue_lock); /* Finish off requests on ccw queue */ @@ -2970,7 +2968,7 @@ static int _dasd_requests_to_flushqueue(struct dasd_block *block, if (rc < 0) break; /* Rechain request (including erp chain) so it won't be - * touched by the dasd_block_tasklet anymore. + * touched by the dasd_block_work anymore. * Replace the callback so we notice when the request * is returned from the dasd_device layer. */ @@ -3025,16 +3023,16 @@ static int dasd_flush_block_queue(struct dasd_block *block) } /* - * Schedules a call to dasd_tasklet over the device tasklet. + * Schedules a call to dasd_work over the device wq. */ void dasd_schedule_block_bh(struct dasd_block *block) { /* Protect against rescheduling. */ - if (atomic_cmpxchg(&block->tasklet_scheduled, 0, 1) != 0) + if (atomic_cmpxchg(&block->work_scheduled, 0, 1) != 0) return; /* life cycle of block is bound to it's base device */ dasd_get_device(block->base); - tasklet_hi_schedule(&block->tasklet); + queue_work(system_bh_highpri_wq, &block->bh); } EXPORT_SYMBOL(dasd_schedule_block_bh); diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index e5f40536b425..abe4d43f474e 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -28,7 +28,7 @@ * known -> basic: request irq line for the device. * basic -> ready: do the initial analysis, e.g. format detection, * do block device setup and detect partitions. - * ready -> online: schedule the device tasklet. + * ready -> online: schedule the device work. * Things to do for shutdown state transitions: * online -> ready: just set the new device state. * ready -> basic: flush requests from the block device layer, clear @@ -579,8 +579,8 @@ struct dasd_device { struct list_head erp_chunks; struct list_head ese_chunks; - atomic_t tasklet_scheduled; - struct tasklet_struct tasklet; + atomic_t work_scheduled; + struct work_struct bh; struct work_struct kick_work; struct work_struct reload_device; struct work_struct kick_validate; @@ -630,8 +630,8 @@ struct dasd_block { struct list_head ccw_queue; spinlock_t queue_lock; - atomic_t tasklet_scheduled; - struct tasklet_struct tasklet; + atomic_t work_scheduled; + struct work_struct bh; struct timer_list timer; struct dentry *debugfs_dentry; diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 251d2a1c3eef..993275e9b2f4 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "raw3270.h" #include "keyboard.h" @@ -107,8 +108,8 @@ struct tty3270 { struct raw3270_request *readpartreq; unsigned char inattr; /* Visible/invisible input. */ int throttle, attn; /* tty throttle/unthrottle. */ - struct tasklet_struct readlet; /* Tasklet to issue read request. */ - struct tasklet_struct hanglet; /* Tasklet to hang up the tty. */ + struct work_struct read_work; /* Work to issue read request. */ + struct work_struct hang_work; /* Work to hang up the tty. */ struct kbd_data *kbd; /* key_maps stuff. */ /* Escape sequence parsing. */ @@ -667,9 +668,9 @@ static void tty3270_scroll_backward(struct kbd_data *kbd) /* * Pass input line to tty. */ -static void tty3270_read_tasklet(unsigned long data) +static void tty3270_read_work(struct work_struct *T) { - struct raw3270_request *rrq = (struct raw3270_request *)data; + struct raw3270_request *rrq = from_work(rrq, t, read_work); static char kreset_data = TW_KR; struct tty3270 *tp = container_of(rrq->view, struct tty3270, view); char *input; @@ -734,8 +735,8 @@ static void tty3270_read_callback(struct raw3270_request *rq, void *data) struct tty3270 *tp = container_of(rq->view, struct tty3270, view); raw3270_get_view(rq->view); - /* Schedule tasklet to pass input to tty. */ - tasklet_schedule(&tp->readlet); + /* Schedule work to pass input to tty. */ + queue_work(system_bh_wq, &tp->read_work); } /* @@ -768,9 +769,9 @@ static void tty3270_issue_read(struct tty3270 *tp, int lock) /* * Hang up the tty */ -static void tty3270_hangup_tasklet(unsigned long data) +static void tty3270_hangup_work(struct work_struct *t) { - struct tty3270 *tp = (struct tty3270 *)data; + struct tty3270 *tp = from_work(tp, t, hang_work); tty_port_tty_hangup(&tp->port, true); raw3270_put_view(&tp->view); @@ -797,7 +798,7 @@ static void tty3270_deactivate(struct raw3270_view *view) static void tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb) { - /* Handle ATTN. Schedule tasklet to read aid. */ + /* Handle ATTN. Schedule work to read aid. */ if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { if (!tp->throttle) tty3270_issue_read(tp, 0); @@ -809,7 +810,7 @@ static void tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct i if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { rq->rc = -EIO; raw3270_get_view(&tp->view); - tasklet_schedule(&tp->hanglet); + queue_work(system_bh_wq, &tp->hang_work); } else { /* Normal end. Copy residual count. */ rq->rescnt = irb->scsw.cmd.count; @@ -850,10 +851,8 @@ static struct tty3270 *tty3270_alloc_view(void) tty_port_init(&tp->port); timer_setup(&tp->timer, tty3270_update, 0); - tasklet_init(&tp->readlet, tty3270_read_tasklet, - (unsigned long)tp->read); - tasklet_init(&tp->hanglet, tty3270_hangup_tasklet, - (unsigned long)tp); + INIT_WORK(&tp->read_work, tty3270_read_work); + INIT_WORK(&tp->hang_work, tty3270_hangup_work); return tp; out_readpartreq: diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index cce0bafd4c92..5136ecd965ae 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -111,10 +111,10 @@ static void ap_scan_bus_wq_callback(struct work_struct *); static DECLARE_WORK(ap_scan_bus_work, ap_scan_bus_wq_callback); /* - * Tasklet & timer for AP request polling and interrupts + * Work & timer for AP request polling and interrupts */ -static void ap_tasklet_fn(unsigned long); -static DECLARE_TASKLET_OLD(ap_tasklet, ap_tasklet_fn); +static void ap_work_fn(struct work_struct *); +static DECLARE_WORK(ap_work, ap_work_fn); static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait); static struct task_struct *ap_poll_kthread; static DEFINE_MUTEX(ap_poll_thread_mutex); @@ -450,16 +450,16 @@ void ap_request_timeout(struct timer_list *t) * ap_poll_timeout(): AP receive polling for finished AP requests. * @unused: Unused pointer. * - * Schedules the AP tasklet using a high resolution timer. + * Schedules the AP work using a high resolution timer. */ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) { - tasklet_schedule(&ap_tasklet); + queue_work(system_bh_wq, &ap_work); return HRTIMER_NORESTART; } /** - * ap_interrupt_handler() - Schedule ap_tasklet on interrupt + * ap_interrupt_handler() - Schedule ap_work on interrupt * @airq: pointer to adapter interrupt descriptor * @tpi_info: ignored */ @@ -467,23 +467,23 @@ static void ap_interrupt_handler(struct airq_struct *airq, struct tpi_info *tpi_info) { inc_irq_stat(IRQIO_APB); - tasklet_schedule(&ap_tasklet); + queue_work(system_bh_wq, &ap_work); } /** - * ap_tasklet_fn(): Tasklet to poll all AP devices. - * @dummy: Unused variable + * ap_work_fn(): Work to poll all AP devices. + * @t: pointer to work_struct * * Poll all AP devices on the bus. */ -static void ap_tasklet_fn(unsigned long dummy) +static void ap_work_fn(struct work_struct *t) { int bkt; struct ap_queue *aq; enum ap_sm_wait wait = AP_SM_WAIT_NONE; /* Reset the indicator if interrupts are used. Thus new interrupts can - * be received. Doing it in the beginning of the tasklet is therefore + * be received. Doing it in the beginning of the work is therefore * important that no requests on any AP get lost. */ if (ap_irq_flag) @@ -546,7 +546,7 @@ static int ap_poll_thread(void *data) try_to_freeze(); continue; } - ap_tasklet_fn(0); + queue_work(system_bh_wq, &ap_work); } return 0; diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 59c7ed49aa02..7daea5c536c9 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -223,7 +223,7 @@ struct ap_message { u16 flags; /* Flags, see AP_MSG_FLAG_xxx */ int rc; /* Return code for this message */ void *private; /* ap driver private pointer. */ - /* receive is called from tasklet context */ + /* receive is called from work context */ void (*receive)(struct ap_queue *, struct ap_message *, struct ap_message *); }; diff --git a/drivers/s390/crypto/zcrypt_msgtype50.c b/drivers/s390/crypto/zcrypt_msgtype50.c index 3b39cb8f926d..c7bf389f2938 100644 --- a/drivers/s390/crypto/zcrypt_msgtype50.c +++ b/drivers/s390/crypto/zcrypt_msgtype50.c @@ -403,7 +403,7 @@ static int convert_response(struct zcrypt_queue *zq, /* * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". - * It is called from tasklet context. + * It is called from work context. * @aq: pointer to the AP device * @msg: pointer to the AP message * @reply: pointer to the AP reply message diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index 215f257d2360..b62e2c9cee58 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -847,7 +847,7 @@ static int convert_response_rng(struct zcrypt_queue *zq, /* * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". - * It is called from tasklet context. + * It is called from work context. * @aq: pointer to the AP queue * @msg: pointer to the AP message * @reply: pointer to the AP reply message @@ -913,7 +913,7 @@ static void zcrypt_msgtype6_receive(struct ap_queue *aq, /* * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". - * It is called from tasklet context. + * It is called from work context. * @aq: pointer to the AP queue * @msg: pointer to the AP message * @reply: pointer to the AP reply message diff --git a/drivers/s390/net/ctcm_fsms.c b/drivers/s390/net/ctcm_fsms.c index 9678c6a2cda7..3b02a41c4386 100644 --- a/drivers/s390/net/ctcm_fsms.c +++ b/drivers/s390/net/ctcm_fsms.c @@ -1420,12 +1420,12 @@ static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg) case MPCG_STATE_READY: skb_put_data(new_skb, skb->data, block_len); skb_queue_tail(&ch->io_queue, new_skb); - tasklet_schedule(&ch->ch_tasklet); + queue_work(system_bh_wq, &ch->ch_work); break; default: skb_put_data(new_skb, skb->data, len); skb_queue_tail(&ch->io_queue, new_skb); - tasklet_hi_schedule(&ch->ch_tasklet); + queue_work(system_bh_highpri_wq, &ch->ch_work); break; } } diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c index 878fe3ce53ad..c504db179982 100644 --- a/drivers/s390/net/ctcm_main.c +++ b/drivers/s390/net/ctcm_main.c @@ -223,8 +223,8 @@ static void channel_remove(struct channel *ch) dev_kfree_skb_any(ch->trans_skb); } if (IS_MPC(ch)) { - tasklet_kill(&ch->ch_tasklet); - tasklet_kill(&ch->ch_disc_tasklet); + cancel_work_sync(&ch->ch_work); + cancel_work_sync(&ch->ch_disc_work); kfree(ch->discontact_th); } kfree(ch->ccw); @@ -1027,7 +1027,7 @@ static void ctcm_free_netdevice(struct net_device *dev) kfree_fsm(grp->fsm); dev_kfree_skb(grp->xid_skb); dev_kfree_skb(grp->rcvd_xid_skb); - tasklet_kill(&grp->mpc_tasklet2); + cancel_work_sync(&grp->mpc_work2); kfree(grp); priv->mpcg = NULL; } @@ -1118,8 +1118,7 @@ static struct net_device *ctcm_init_netdevice(struct ctcm_priv *priv) free_netdev(dev); return NULL; } - tasklet_init(&grp->mpc_tasklet2, - mpc_group_ready, (unsigned long)dev); + INIT_WORK(&grp->mpc_work2, mpc_group_ready); dev->mtu = MPC_BUFSIZE_DEFAULT - TH_HEADER_LENGTH - PDU_HEADER_LENGTH; @@ -1319,10 +1318,8 @@ static int add_channel(struct ccw_device *cdev, enum ctcm_channel_types type, goto nomem_return; ch->discontact_th->th_blk_flag = TH_DISCONTACT; - tasklet_init(&ch->ch_disc_tasklet, - mpc_action_send_discontact, (unsigned long)ch); - - tasklet_init(&ch->ch_tasklet, ctcmpc_bh, (unsigned long)ch); + INIT_WORK(&ch->ch_disc_work, mpc_action_send_discontact); + INIT_WORK(&ch->ch_work, ctcmpc_bh); ch->max_bufsize = (MPC_BUFSIZE_DEFAULT - 35); ccw_num = 17; } else diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h index 25164e8bf13d..1143c037a7f7 100644 --- a/drivers/s390/net/ctcm_main.h +++ b/drivers/s390/net/ctcm_main.h @@ -13,6 +13,7 @@ #include #include +#include #include "fsm.h" #include "ctcm_dbug.h" @@ -154,7 +155,7 @@ struct channel { int max_bufsize; struct sk_buff *trans_skb; /* transmit/receive buffer */ struct sk_buff_head io_queue; /* universal I/O queue */ - struct tasklet_struct ch_tasklet; /* MPC ONLY */ + struct work_struct ch_work; /* MPC ONLY */ /* * TX queue for collecting skb's during busy. */ @@ -188,7 +189,7 @@ struct channel { fsm_timer sweep_timer; struct sk_buff_head sweep_queue; struct th_header *discontact_th; - struct tasklet_struct ch_disc_tasklet; + struct work_struct ch_disc_work; /* MPC ONLY section end */ int retry; /* retry counter for misc. operations */ diff --git a/drivers/s390/net/ctcm_mpc.c b/drivers/s390/net/ctcm_mpc.c index 9e580ef69bda..0b7ed15ce29d 100644 --- a/drivers/s390/net/ctcm_mpc.c +++ b/drivers/s390/net/ctcm_mpc.c @@ -588,7 +588,7 @@ void ctc_mpc_flow_control(int port_num, int flowc) fsm_newstate(grp->fsm, MPCG_STATE_READY); /* ensure any data that has accumulated */ /* on the io_queue will now be sen t */ - tasklet_schedule(&rch->ch_tasklet); + queue_work(system_bh_wq, &rch->ch_work); } /* possible race condition */ if (mpcg_state == MPCG_STATE_READY) { @@ -847,7 +847,7 @@ static void mpc_action_go_ready(fsm_instance *fsm, int event, void *arg) grp->out_of_sequence = 0; grp->estconn_called = 0; - tasklet_hi_schedule(&grp->mpc_tasklet2); + queue_work(system_bh_highpri_wq, &grp->mpc_work2); return; } @@ -1213,16 +1213,16 @@ static void ctcmpc_unpack_skb(struct channel *ch, struct sk_buff *pskb) } /* - * tasklet helper for mpc's skb unpacking. + * work helper for mpc's skb unpacking. * * ch The channel to work on. * Allow flow control back pressure to occur here. * Throttling back channel can result in excessive * channel inactivity and system deact of channel */ -void ctcmpc_bh(unsigned long thischan) +void ctcmpc_bh(struct work_struct *t) { - struct channel *ch = (struct channel *)thischan; + struct channel *ch = from_work(ch, t, ch_work); struct sk_buff *skb; struct net_device *dev = ch->netdev; struct ctcm_priv *priv = dev->ml_priv; @@ -1380,7 +1380,7 @@ static void mpc_action_go_inop(fsm_instance *fi, int event, void *arg) case MPCG_STATE_FLOWC: case MPCG_STATE_READY: default: - tasklet_hi_schedule(&wch->ch_disc_tasklet); + queue_work(system_bh_wq, &wch->ch_disc_work); } grp->xid2_tgnum = 0; diff --git a/drivers/s390/net/ctcm_mpc.h b/drivers/s390/net/ctcm_mpc.h index da41b26f76d1..735bea5d565a 100644 --- a/drivers/s390/net/ctcm_mpc.h +++ b/drivers/s390/net/ctcm_mpc.h @@ -13,6 +13,7 @@ #include #include +#include #include "fsm.h" /* @@ -156,8 +157,8 @@ struct mpcg_info { }; struct mpc_group { - struct tasklet_struct mpc_tasklet; - struct tasklet_struct mpc_tasklet2; + struct work_struct mpc_work; + struct work_struct mpc_work2; int changed_side; int saved_state; int channels_terminating; @@ -233,6 +234,6 @@ void mpc_group_ready(unsigned long adev); void mpc_channel_action(struct channel *ch, int direction, int action); void mpc_action_send_discontact(unsigned long thischan); void mpc_action_discontact(fsm_instance *fi, int event, void *arg); -void ctcmpc_bh(unsigned long thischan); +void ctcmpc_bh(struct work_struct *t); #endif /* --- This is the END my friend --- */ diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c index 25d4e6376591..751b7b212c91 100644 --- a/drivers/s390/net/lcs.c +++ b/drivers/s390/net/lcs.c @@ -49,7 +49,7 @@ static struct device *lcs_root_dev; /* * Some prototypes. */ -static void lcs_tasklet(unsigned long); +static void lcs_work(struct work_struct *); static void lcs_start_kernel_thread(struct work_struct *); static void lcs_get_frames_cb(struct lcs_channel *, struct lcs_buffer *); #ifdef CONFIG_IP_MULTICAST @@ -140,8 +140,8 @@ static void lcs_cleanup_channel(struct lcs_channel *channel) { LCS_DBF_TEXT(3, setup, "cleanch"); - /* Kill write channel tasklets. */ - tasklet_kill(&channel->irq_tasklet); + /* Kill write channel works. */ + cancel_work_sync(&channel->irq_work); /* Free channel buffers. */ lcs_free_channel(channel); } @@ -244,9 +244,8 @@ lcs_setup_read(struct lcs_card *card) LCS_DBF_TEXT(3, setup, "initread"); lcs_setup_read_ccws(card); - /* Initialize read channel tasklet. */ - card->read.irq_tasklet.data = (unsigned long) &card->read; - card->read.irq_tasklet.func = lcs_tasklet; + /* Initialize read channel work. */ + INIT_WORK(card->read.irq_work, lcs_work); /* Initialize waitqueue. */ init_waitqueue_head(&card->read.wait_q); } @@ -290,9 +289,8 @@ lcs_setup_write(struct lcs_card *card) LCS_DBF_TEXT(3, setup, "initwrit"); lcs_setup_write_ccws(card); - /* Initialize write channel tasklet. */ - card->write.irq_tasklet.data = (unsigned long) &card->write; - card->write.irq_tasklet.func = lcs_tasklet; + /* Initialize write channel work. */ + INIT_WORK(card->write.irq_work, lcs_work); /* Initialize waitqueue. */ init_waitqueue_head(&card->write.wait_q); } @@ -1429,22 +1427,22 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) } if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) channel->state = LCS_CH_STATE_CLEARED; - /* Do the rest in the tasklet. */ - tasklet_schedule(&channel->irq_tasklet); + /* Do the rest in the work. */ + queue_work(system_bh_wq, &channel->irq_work); } /* - * Tasklet for IRQ handler + * Work for IRQ handler */ static void -lcs_tasklet(unsigned long data) +lcs_work(struct work_struct *t) { unsigned long flags; struct lcs_channel *channel; struct lcs_buffer *iob; int buf_idx; - channel = (struct lcs_channel *) data; + channel = from_work(channel, t, irq_work); LCS_DBF_TEXT_(5, trace, "tlet%s", dev_name(&channel->ccwdev->dev)); /* Check for processed buffers. */ diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h index a2699b70b050..66bc02e1d7e5 100644 --- a/drivers/s390/net/lcs.h +++ b/drivers/s390/net/lcs.h @@ -290,7 +290,7 @@ struct lcs_channel { struct ccw_device *ccwdev; struct ccw1 ccws[LCS_NUM_BUFFS + 1]; wait_queue_head_t wait_q; - struct tasklet_struct irq_tasklet; + struct work_struct irq_work; struct lcs_buffer iob[LCS_NUM_BUFFS]; int io_idx; int buf_idx; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index a0cce6872075..10ea95abc753 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -2911,7 +2911,7 @@ static int qeth_init_input_buffer(struct qeth_card *card, } /* - * since the buffer is accessed only from the input_tasklet + * since the buffer is accessed only from the input_work * there shouldn't be a need to synchronize; also, since we use * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off * buffers diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 8cbc5e1711af..407590697c66 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "zfcp_ext.h" #include "zfcp_qdio.h" @@ -72,9 +73,9 @@ static void zfcp_qdio_int_req(struct ccw_device *cdev, unsigned int qdio_err, zfcp_qdio_handler_error(qdio, "qdireq1", qdio_err); } -static void zfcp_qdio_request_tasklet(struct tasklet_struct *tasklet) +static void zfcp_qdio_request_work(struct work_struct *work) { - struct zfcp_qdio *qdio = from_tasklet(qdio, tasklet, request_tasklet); + struct zfcp_qdio *qdio = from_work(qdio, work, request_work); struct ccw_device *cdev = qdio->adapter->ccw_device; unsigned int start, error; int completed; @@ -104,7 +105,7 @@ static void zfcp_qdio_request_timer(struct timer_list *timer) { struct zfcp_qdio *qdio = from_timer(qdio, timer, request_timer); - tasklet_schedule(&qdio->request_tasklet); + queue_work(system_bh_wq, &qdio->request_work); } static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, @@ -158,15 +159,15 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, zfcp_erp_adapter_reopen(qdio->adapter, 0, "qdires2"); } -static void zfcp_qdio_irq_tasklet(struct tasklet_struct *tasklet) +static void zfcp_qdio_irq_work(struct work_struct *work) { - struct zfcp_qdio *qdio = from_tasklet(qdio, tasklet, irq_tasklet); + struct zfcp_qdio *qdio = from_work(qdio, work, irq_work); struct ccw_device *cdev = qdio->adapter->ccw_device; unsigned int start, error; int completed; if (atomic_read(&qdio->req_q_free) < QDIO_MAX_BUFFERS_PER_Q) - tasklet_schedule(&qdio->request_tasklet); + queue_work(system_bh_wq, &qdio->request_work); /* Check the Response Queue: */ completed = qdio_inspect_input_queue(cdev, 0, &start, &error); @@ -178,14 +179,14 @@ static void zfcp_qdio_irq_tasklet(struct tasklet_struct *tasklet) if (qdio_start_irq(cdev)) /* More work pending: */ - tasklet_schedule(&qdio->irq_tasklet); + queue_work(system_bh_wq, &qdio->irq_work); } static void zfcp_qdio_poll(struct ccw_device *cdev, unsigned long data) { struct zfcp_qdio *qdio = (struct zfcp_qdio *) data; - tasklet_schedule(&qdio->irq_tasklet); + queue_work(system_bh_wq, &qdio->irq_work); } static struct qdio_buffer_element * @@ -315,7 +316,7 @@ int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req) /* * This should actually be a spin_lock_bh(stat_lock), to protect against - * Request Queue completion processing in tasklet context. + * Request Queue completion processing in work context. * But we can't do so (and are safe), as we always get called with IRQs * disabled by spin_lock_irq[save](req_q_lock). */ @@ -339,7 +340,7 @@ int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req) } if (atomic_read(&qdio->req_q_free) <= 2 * ZFCP_QDIO_MAX_SBALS_PER_REQ) - tasklet_schedule(&qdio->request_tasklet); + queue_work(system_bh_wq, &qdio->request_work); else timer_reduce(&qdio->request_timer, jiffies + msecs_to_jiffies(ZFCP_QDIO_REQUEST_SCAN_MSECS)); @@ -406,8 +407,8 @@ void zfcp_qdio_close(struct zfcp_qdio *qdio) wake_up(&qdio->req_q_wq); - tasklet_disable(&qdio->irq_tasklet); - tasklet_disable(&qdio->request_tasklet); + disable_work_sync(&qdio->irq_work); + disable_work_sync(&qdio->request_work); del_timer_sync(&qdio->request_timer); qdio_stop_irq(adapter->ccw_device); qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); @@ -511,11 +512,11 @@ int zfcp_qdio_open(struct zfcp_qdio *qdio) atomic_or(ZFCP_STATUS_ADAPTER_QDIOUP, &qdio->adapter->status); /* Enable processing for Request Queue completions: */ - tasklet_enable(&qdio->request_tasklet); + enable_and_queue_work(system_bh_wq, &qdio->request_work); /* Enable processing for QDIO interrupts: */ - tasklet_enable(&qdio->irq_tasklet); + enable_and_queue_work(system_bh_wq, &qdio->irq_work); /* This results in a qdio_start_irq(): */ - tasklet_schedule(&qdio->irq_tasklet); + queue_work(system_bh_wq, &qdio->irq_work); zfcp_qdio_shost_update(adapter, qdio); @@ -534,8 +535,8 @@ void zfcp_qdio_destroy(struct zfcp_qdio *qdio) if (!qdio) return; - tasklet_kill(&qdio->irq_tasklet); - tasklet_kill(&qdio->request_tasklet); + cancel_work_sync(&qdio->irq_work); + cancel_work_sync(&qdio->request_work); if (qdio->adapter->ccw_device) qdio_free(qdio->adapter->ccw_device); @@ -563,10 +564,10 @@ int zfcp_qdio_setup(struct zfcp_adapter *adapter) spin_lock_init(&qdio->req_q_lock); spin_lock_init(&qdio->stat_lock); timer_setup(&qdio->request_timer, zfcp_qdio_request_timer, 0); - tasklet_setup(&qdio->irq_tasklet, zfcp_qdio_irq_tasklet); - tasklet_setup(&qdio->request_tasklet, zfcp_qdio_request_tasklet); - tasklet_disable(&qdio->irq_tasklet); - tasklet_disable(&qdio->request_tasklet); + INIT_WORK(&qdio->irq_work, zfcp_qdio_irq_work); + INIT_WORK(&qdio->request_work, zfcp_qdio_request_work); + disable_work_sync(&qdio->irq_work); + disable_work_sync(&qdio->request_work); adapter->qdio = qdio; return 0; @@ -580,7 +581,7 @@ int zfcp_qdio_setup(struct zfcp_adapter *adapter) * wrapper function sets a flag to ensure hardware logging is only * triggered once before going through qdio shutdown. * - * The triggers are always run from qdio tasklet context, so no + * The triggers are always run from qdio work context, so no * additional synchronization is necessary. */ void zfcp_qdio_siosl(struct zfcp_adapter *adapter) diff --git a/drivers/s390/scsi/zfcp_qdio.h b/drivers/s390/scsi/zfcp_qdio.h index 8f7d2ae94441..ce92d2378b98 100644 --- a/drivers/s390/scsi/zfcp_qdio.h +++ b/drivers/s390/scsi/zfcp_qdio.h @@ -11,6 +11,7 @@ #define ZFCP_QDIO_H #include +#include #include #define ZFCP_QDIO_SBALE_LEN PAGE_SIZE @@ -30,8 +31,8 @@ * @req_q_util: used for accounting * @req_q_full: queue full incidents * @req_q_wq: used to wait for SBAL availability - * @irq_tasklet: used for QDIO interrupt processing - * @request_tasklet: used for Request Queue completion processing + * @irq_work: used for QDIO interrupt processing + * @request_work: used for Request Queue completion processing * @request_timer: used to trigger the Request Queue completion processing * @adapter: adapter used in conjunction with this qdio structure * @max_sbale_per_sbal: qdio limit per sbal @@ -48,8 +49,8 @@ struct zfcp_qdio { u64 req_q_util; atomic_t req_q_full; wait_queue_head_t req_q_wq; - struct tasklet_struct irq_tasklet; - struct tasklet_struct request_tasklet; + struct work_struct irq_work; + struct work_struct request_work; struct timer_list request_timer; struct zfcp_adapter *adapter; u16 max_sbale_per_sbal; From patchwork Wed Mar 27 16:03:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606987 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8DB951386BB; Wed, 27 Mar 2024 16:03:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555415; cv=none; b=t0JY3BTzv7AfDQgpzQMQansE+S5Oje8Rk1VG5joEfc7/gtzDf55XI80pyJD/DHY1pwXwqGZTvTl9aHI9IsoAsJYk4h5yCuBlo9/isii+efKyNdLZPLI+bPbTu4clFUvrdl2I94Vya6trLVLHKhH1naxmCdBEhvH/uMv6peOXlfY= ARC-Message-Signature: i=1; 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Wed, 27 Mar 2024 09:03:22 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 8565E208B35B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555402; bh=xDUe8JlaEBVj4Yzwll8byF63bglXBJEnvRcRQGJLWTE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MKEaFD6Xv82Gw9sMT96PBAyIARthem/fPFjtUXCH9Bh6MpRTyar8zRltfczYe1PZe VTY5r98qsmuY+/wnt0GjZEfcAnAnSEWwJuTtABrb35ea31MAObZkmF+PUe5rWKbjxC YjtDjIM1LUp8wcPrrsf3fORclJq7ULhlFYkaxkyE= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 8/9] drivers/media/*: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:13 +0000 Message-Id: <20240327160314.9982-9-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/media/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais --- drivers/media/pci/bt8xx/bt878.c | 8 ++-- drivers/media/pci/bt8xx/bt878.h | 3 +- drivers/media/pci/bt8xx/dvb-bt8xx.c | 9 ++-- drivers/media/pci/ddbridge/ddbridge.h | 3 +- drivers/media/pci/mantis/hopper_cards.c | 2 +- drivers/media/pci/mantis/mantis_cards.c | 2 +- drivers/media/pci/mantis/mantis_common.h | 3 +- drivers/media/pci/mantis/mantis_dma.c | 5 ++- drivers/media/pci/mantis/mantis_dma.h | 2 +- drivers/media/pci/mantis/mantis_dvb.c | 12 +++--- drivers/media/pci/ngene/ngene-core.c | 23 ++++++----- drivers/media/pci/ngene/ngene.h | 5 ++- drivers/media/pci/smipcie/smipcie-main.c | 18 ++++---- drivers/media/pci/smipcie/smipcie.h | 3 +- drivers/media/pci/ttpci/budget-av.c | 3 +- drivers/media/pci/ttpci/budget-ci.c | 27 ++++++------ drivers/media/pci/ttpci/budget-core.c | 10 ++--- drivers/media/pci/ttpci/budget.h | 5 ++- drivers/media/pci/tw5864/tw5864-core.c | 2 +- drivers/media/pci/tw5864/tw5864-video.c | 13 +++--- drivers/media/pci/tw5864/tw5864.h | 7 ++-- drivers/media/platform/intel/pxa_camera.c | 15 +++---- drivers/media/platform/marvell/mcam-core.c | 11 ++--- drivers/media/platform/marvell/mcam-core.h | 3 +- .../st/sti/c8sectpfe/c8sectpfe-core.c | 15 +++---- .../st/sti/c8sectpfe/c8sectpfe-core.h | 2 +- drivers/media/radio/wl128x/fmdrv.h | 7 ++-- drivers/media/radio/wl128x/fmdrv_common.c | 41 ++++++++++--------- drivers/media/rc/mceusb.c | 2 +- drivers/media/usb/ttusb-dec/ttusb_dec.c | 21 +++++----- 30 files changed, 151 insertions(+), 131 deletions(-) diff --git a/drivers/media/pci/bt8xx/bt878.c b/drivers/media/pci/bt8xx/bt878.c index 90972d6952f1..983ec29108f0 100644 --- a/drivers/media/pci/bt8xx/bt878.c +++ b/drivers/media/pci/bt8xx/bt878.c @@ -300,8 +300,8 @@ static irqreturn_t bt878_irq(int irq, void *dev_id) } if (astat & BT878_ARISCI) { bt->finished_block = (stat & BT878_ARISCS) >> 28; - if (bt->tasklet.callback) - tasklet_schedule(&bt->tasklet); + if (bt->work.func) + queue_work(system_bh_wq, break; } count++; @@ -478,8 +478,8 @@ static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id) btwrite(0, BT878_AINT_MASK); bt878_num++; - if (!bt->tasklet.func) - tasklet_disable(&bt->tasklet); + if (!bt->work.func) + disable_work_sync(&bt->work); return 0; diff --git a/drivers/media/pci/bt8xx/bt878.h b/drivers/media/pci/bt8xx/bt878.h index fde8db293c54..b9ce78e5116b 100644 --- a/drivers/media/pci/bt8xx/bt878.h +++ b/drivers/media/pci/bt8xx/bt878.h @@ -14,6 +14,7 @@ #include #include #include +#include #include "bt848.h" #include "bttv.h" @@ -120,7 +121,7 @@ struct bt878 { dma_addr_t risc_dma; u32 risc_pos; - struct tasklet_struct tasklet; + struct work_struct work; int shutdown; }; diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c index 390cbba6c065..8c0e1fa764a4 100644 --- a/drivers/media/pci/bt8xx/dvb-bt8xx.c +++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -39,9 +40,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); #define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */ -static void dvb_bt8xx_task(struct tasklet_struct *t) +static void dvb_bt8xx_task(struct work_struct *t) { - struct bt878 *bt = from_tasklet(bt, t, tasklet); + struct bt878 *bt = from_work(bt, t, work); struct dvb_bt8xx_card *card = dev_get_drvdata(&bt->adapter->dev); dprintk("%d\n", card->bt->finished_block); @@ -782,7 +783,7 @@ static int dvb_bt8xx_load_card(struct dvb_bt8xx_card *card, u32 type) goto err_disconnect_frontend; } - tasklet_setup(&card->bt->tasklet, dvb_bt8xx_task); + INIT_WORK(&card->bt->work, dvb_bt8xx_task); frontend_init(card, type); @@ -922,7 +923,7 @@ static void dvb_bt8xx_remove(struct bttv_sub_device *sub) dprintk("dvb_bt8xx: unloading card%d\n", card->bttv_nr); bt878_stop(card->bt); - tasklet_kill(&card->bt->tasklet); + cancel_work_sync(&card->bt->work); dvb_net_release(&card->dvbnet); card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_mem); card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_hw); diff --git a/drivers/media/pci/ddbridge/ddbridge.h b/drivers/media/pci/ddbridge/ddbridge.h index f3699dbd193f..037d1d13ef0f 100644 --- a/drivers/media/pci/ddbridge/ddbridge.h +++ b/drivers/media/pci/ddbridge/ddbridge.h @@ -35,6 +35,7 @@ #include #include #include +#include #include #include @@ -298,7 +299,7 @@ struct ddb_link { spinlock_t lock; /* lock link access */ struct mutex flash_mutex; /* lock flash access */ struct ddb_lnb lnb; - struct tasklet_struct tasklet; + struct work_struct work; struct ddb_ids ids; spinlock_t temp_lock; /* lock temp chip access */ diff --git a/drivers/media/pci/mantis/hopper_cards.c b/drivers/media/pci/mantis/hopper_cards.c index c0bd5d7e148b..869ea88c4893 100644 --- a/drivers/media/pci/mantis/hopper_cards.c +++ b/drivers/media/pci/mantis/hopper_cards.c @@ -116,7 +116,7 @@ static irqreturn_t hopper_irq_handler(int irq, void *dev_id) if (stat & MANTIS_INT_RISCI) { dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]); mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28; - tasklet_schedule(&mantis->tasklet); + queue_work(system_bh_wq, &mantis->work); } if (stat & MANTIS_INT_I2CDONE) { dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]); diff --git a/drivers/media/pci/mantis/mantis_cards.c b/drivers/media/pci/mantis/mantis_cards.c index 906e4500d87d..cb124b19e36e 100644 --- a/drivers/media/pci/mantis/mantis_cards.c +++ b/drivers/media/pci/mantis/mantis_cards.c @@ -125,7 +125,7 @@ static irqreturn_t mantis_irq_handler(int irq, void *dev_id) if (stat & MANTIS_INT_RISCI) { dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]); mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28; - tasklet_schedule(&mantis->tasklet); + queue_work(system_bh_wq, &mantis->work); } if (stat & MANTIS_INT_I2CDONE) { dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]); diff --git a/drivers/media/pci/mantis/mantis_common.h b/drivers/media/pci/mantis/mantis_common.h index d88ac280226c..f2247148f268 100644 --- a/drivers/media/pci/mantis/mantis_common.h +++ b/drivers/media/pci/mantis/mantis_common.h @@ -12,6 +12,7 @@ #include #include #include +#include #include "mantis_reg.h" #include "mantis_uart.h" @@ -125,7 +126,7 @@ struct mantis_pci { __le32 *risc_cpu; dma_addr_t risc_dma; - struct tasklet_struct tasklet; + struct work_struct work; spinlock_t intmask_lock; struct i2c_adapter adapter; diff --git a/drivers/media/pci/mantis/mantis_dma.c b/drivers/media/pci/mantis/mantis_dma.c index 80c843936493..c85f9b84a2c6 100644 --- a/drivers/media/pci/mantis/mantis_dma.c +++ b/drivers/media/pci/mantis/mantis_dma.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -200,9 +201,9 @@ void mantis_dma_stop(struct mantis_pci *mantis) } -void mantis_dma_xfer(struct tasklet_struct *t) +void mantis_dma_xfer(struct work_struct *t) { - struct mantis_pci *mantis = from_tasklet(mantis, t, tasklet); + struct mantis_pci *mantis = from_work(mantis, t, work); struct mantis_hwconfig *config = mantis->hwconfig; while (mantis->last_block != mantis->busy_block) { diff --git a/drivers/media/pci/mantis/mantis_dma.h b/drivers/media/pci/mantis/mantis_dma.h index 37da982c9c29..5db0d3728f15 100644 --- a/drivers/media/pci/mantis/mantis_dma.h +++ b/drivers/media/pci/mantis/mantis_dma.h @@ -13,6 +13,6 @@ extern int mantis_dma_init(struct mantis_pci *mantis); extern int mantis_dma_exit(struct mantis_pci *mantis); extern void mantis_dma_start(struct mantis_pci *mantis); extern void mantis_dma_stop(struct mantis_pci *mantis); -extern void mantis_dma_xfer(struct tasklet_struct *t); +extern void mantis_dma_xfer(struct work_struct *t); #endif /* __MANTIS_DMA_H */ diff --git a/drivers/media/pci/mantis/mantis_dvb.c b/drivers/media/pci/mantis/mantis_dvb.c index c7ba4a76e608..f640635de170 100644 --- a/drivers/media/pci/mantis/mantis_dvb.c +++ b/drivers/media/pci/mantis/mantis_dvb.c @@ -105,7 +105,7 @@ static int mantis_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed) if (mantis->feeds == 1) { dprintk(MANTIS_DEBUG, 1, "mantis start feed & dma"); mantis_dma_start(mantis); - tasklet_enable(&mantis->tasklet); + enable_and_queue_work(system_bh_wq, &mantis->work); } return mantis->feeds; @@ -125,7 +125,7 @@ static int mantis_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) mantis->feeds--; if (mantis->feeds == 0) { dprintk(MANTIS_DEBUG, 1, "mantis stop feed and dma"); - tasklet_disable(&mantis->tasklet); + disable_work_sync(&mantis->work); mantis_dma_stop(mantis); } @@ -205,8 +205,8 @@ int mantis_dvb_init(struct mantis_pci *mantis) } dvb_net_init(&mantis->dvb_adapter, &mantis->dvbnet, &mantis->demux.dmx); - tasklet_setup(&mantis->tasklet, mantis_dma_xfer); - tasklet_disable(&mantis->tasklet); + INIT_WORK(&mantis->bh, mantis_dma_xfer); + disable_work_sync(&mantis->work); if (mantis->hwconfig) { result = config->frontend_init(mantis, mantis->fe); if (result < 0) { @@ -235,7 +235,7 @@ int mantis_dvb_init(struct mantis_pci *mantis) /* Error conditions .. */ err5: - tasklet_kill(&mantis->tasklet); + cancel_work_sync(&mantis->work); dvb_net_release(&mantis->dvbnet); if (mantis->fe) { dvb_unregister_frontend(mantis->fe); @@ -273,7 +273,7 @@ int mantis_dvb_exit(struct mantis_pci *mantis) dvb_frontend_detach(mantis->fe); } - tasklet_kill(&mantis->tasklet); + cancel_work_sync(&mantis->work); dvb_net_release(&mantis->dvbnet); mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_mem); diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c index 7481f553f959..5211d6796748 100644 --- a/drivers/media/pci/ngene/ngene-core.c +++ b/drivers/media/pci/ngene/ngene-core.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "ngene.h" @@ -50,9 +51,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); /* nGene interrupt handler **************************************************/ /****************************************************************************/ -static void event_tasklet(struct tasklet_struct *t) +static void event_work(struct work_struct *t) { - struct ngene *dev = from_tasklet(dev, t, event_tasklet); + struct ngene *dev = from_work(dev, t, event_work); while (dev->EventQueueReadIndex != dev->EventQueueWriteIndex) { struct EVENT_BUFFER Event = @@ -68,9 +69,9 @@ static void event_tasklet(struct tasklet_struct *t) } } -static void demux_tasklet(struct tasklet_struct *t) +static void demux_work(struct work_struct *t) { - struct ngene_channel *chan = from_tasklet(chan, t, demux_tasklet); + struct ngene_channel *chan = from_work(chan, t, demux_work); struct device *pdev = &chan->dev->pci_dev->dev; struct SBufferHeader *Cur = chan->nextBuffer; @@ -204,7 +205,7 @@ static irqreturn_t irq_handler(int irq, void *dev_id) dev->EventQueueOverflowFlag = 1; } dev->EventBuffer->EventStatus &= ~0x80; - tasklet_schedule(&dev->event_tasklet); + queue_work(system_bh_wq, &dev->event_work); rc = IRQ_HANDLED; } @@ -217,8 +218,8 @@ static irqreturn_t irq_handler(int irq, void *dev_id) ngeneBuffer.SR.Flags & 0xC0) == 0x80) { dev->channel[i].nextBuffer-> ngeneBuffer.SR.Flags |= 0x40; - tasklet_schedule( - &dev->channel[i].demux_tasklet); + queue_work(system_bh_wq, + &dev->channel[i].demux_work); rc = IRQ_HANDLED; } } @@ -1181,7 +1182,7 @@ static void ngene_init(struct ngene *dev) struct device *pdev = &dev->pci_dev->dev; int i; - tasklet_setup(&dev->event_tasklet, event_tasklet); + INIT_WORK(&dev->event_work, event_work); memset_io(dev->iomem + 0xc000, 0x00, 0x220); memset_io(dev->iomem + 0xc400, 0x00, 0x100); @@ -1395,7 +1396,7 @@ static void release_channel(struct ngene_channel *chan) if (chan->running) set_transfer(chan, 0); - tasklet_kill(&chan->demux_tasklet); + cancel_work_sync(&chan->demux_work); if (chan->ci_dev) { dvb_unregister_device(chan->ci_dev); @@ -1445,7 +1446,7 @@ static int init_channel(struct ngene_channel *chan) struct ngene_info *ni = dev->card_info; int io = ni->io_type[nr]; - tasklet_setup(&chan->demux_tasklet, demux_tasklet); + INIT_WORK(&chan->demux_work, demux_work); chan->users = 0; chan->type = io; chan->mode = chan->type; /* for now only one mode */ @@ -1647,7 +1648,7 @@ void ngene_remove(struct pci_dev *pdev) struct ngene *dev = pci_get_drvdata(pdev); int i; - tasklet_kill(&dev->event_tasklet); + cancel_work_sync(&dev->event_work); for (i = MAX_STREAM - 1; i >= 0; i--) release_channel(&dev->channel[i]); if (dev->ci.en) diff --git a/drivers/media/pci/ngene/ngene.h b/drivers/media/pci/ngene/ngene.h index d1d7da84cd9d..c2a23f6dbe09 100644 --- a/drivers/media/pci/ngene/ngene.h +++ b/drivers/media/pci/ngene/ngene.h @@ -16,6 +16,7 @@ #include #include +#include #include #include @@ -621,7 +622,7 @@ struct ngene_channel { int users; struct video_device *v4l_dev; struct dvb_device *ci_dev; - struct tasklet_struct demux_tasklet; + struct work_struct demux_work; struct SBufferHeader *nextBuffer; enum KSSTATE State; @@ -717,7 +718,7 @@ struct ngene { struct EVENT_BUFFER EventQueue[EVENT_QUEUE_SIZE]; int EventQueueOverflowCount; int EventQueueOverflowFlag; - struct tasklet_struct event_tasklet; + struct work_struct event_work; struct EVENT_BUFFER *EventBuffer; int EventQueueWriteIndex; int EventQueueReadIndex; diff --git a/drivers/media/pci/smipcie/smipcie-main.c b/drivers/media/pci/smipcie/smipcie-main.c index 0c300d019d9c..7da6bb55660b 100644 --- a/drivers/media/pci/smipcie/smipcie-main.c +++ b/drivers/media/pci/smipcie/smipcie-main.c @@ -279,10 +279,10 @@ static void smi_port_clearInterrupt(struct smi_port *port) (port->_dmaInterruptCH0 | port->_dmaInterruptCH1)); } -/* tasklet handler: DMA data to dmx.*/ -static void smi_dma_xfer(struct tasklet_struct *t) +/* work handler: DMA data to dmx.*/ +static void smi_dma_xfer(struct work_struct *t) { - struct smi_port *port = from_tasklet(port, t, tasklet); + struct smi_port *port = from_work(port, t, work); struct smi_dev *dev = port->dev; u32 intr_status, finishedData, dmaManagement; u8 dmaChan0State, dmaChan1State; @@ -426,8 +426,8 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed) } smi_port_disableInterrupt(port); - tasklet_setup(&port->tasklet, smi_dma_xfer); - tasklet_disable(&port->tasklet); + INIT_WORK(&port->work, smi_dma_xfer); + disable_work_sync(&port->work); port->enable = 1; return 0; err: @@ -438,7 +438,7 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed) static void smi_port_exit(struct smi_port *port) { smi_port_disableInterrupt(port); - tasklet_kill(&port->tasklet); + cancel_work_sync(&port->work); smi_port_dma_free(port); port->enable = 0; } @@ -452,7 +452,7 @@ static int smi_port_irq(struct smi_port *port, u32 int_status) smi_port_disableInterrupt(port); port->_int_status = int_status; smi_port_clearInterrupt(port); - tasklet_schedule(&port->tasklet); + queue_work(system_bh_wq, &port->work); handled = 1; } return handled; @@ -823,7 +823,7 @@ static int smi_start_feed(struct dvb_demux_feed *dvbdmxfeed) smi_port_clearInterrupt(port); smi_port_enableInterrupt(port); smi_write(port->DMA_MANAGEMENT, dmaManagement); - tasklet_enable(&port->tasklet); + enable_and_queue_work(system_bh_wq, &port->work); } return port->users; } @@ -837,7 +837,7 @@ static int smi_stop_feed(struct dvb_demux_feed *dvbdmxfeed) if (--port->users) return port->users; - tasklet_disable(&port->tasklet); + disable_work_sync(&port->work); smi_port_disableInterrupt(port); smi_clear(port->DMA_MANAGEMENT, 0x30003); return 0; diff --git a/drivers/media/pci/smipcie/smipcie.h b/drivers/media/pci/smipcie/smipcie.h index 2b5e0154814c..f124d2cdead6 100644 --- a/drivers/media/pci/smipcie/smipcie.h +++ b/drivers/media/pci/smipcie/smipcie.h @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -257,7 +258,7 @@ struct smi_port { u32 _dmaInterruptCH0; u32 _dmaInterruptCH1; u32 _int_status; - struct tasklet_struct tasklet; + struct work_struct work; /* dvb */ struct dmx_frontend hw_frontend; struct dmx_frontend mem_frontend; diff --git a/drivers/media/pci/ttpci/budget-av.c b/drivers/media/pci/ttpci/budget-av.c index a47c5850ef87..6e43b1a01191 100644 --- a/drivers/media/pci/ttpci/budget-av.c +++ b/drivers/media/pci/ttpci/budget-av.c @@ -37,6 +37,7 @@ #include #include #include +#include #include @@ -55,7 +56,7 @@ struct budget_av { struct video_device vd; int cur_input; int has_saa7113; - struct tasklet_struct ciintf_irq_tasklet; + struct work_struct ciintf_irq_work; int slot_status; struct dvb_ca_en50221 ca; u8 reinitialise_demod:1; diff --git a/drivers/media/pci/ttpci/budget-ci.c b/drivers/media/pci/ttpci/budget-ci.c index 66e1a004ee43..11e0ed62707e 100644 --- a/drivers/media/pci/ttpci/budget-ci.c +++ b/drivers/media/pci/ttpci/budget-ci.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include "budget.h" @@ -80,7 +81,7 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); struct budget_ci_ir { struct rc_dev *dev; - struct tasklet_struct msp430_irq_tasklet; + struct work_struct msp430_irq_work; char name[72]; /* 40 + 32 for (struct saa7146_dev).name */ char phys[32]; int rc5_device; @@ -91,7 +92,7 @@ struct budget_ci_ir { struct budget_ci { struct budget budget; - struct tasklet_struct ciintf_irq_tasklet; + struct work_struct ciintf_irq_work; int slot_status; int ci_irq; struct dvb_ca_en50221 ca; @@ -99,9 +100,9 @@ struct budget_ci { u8 tuner_pll_address; /* used for philips_tdm1316l configs */ }; -static void msp430_ir_interrupt(struct tasklet_struct *t) +static void msp430_ir_interrupt(struct work_struct *t) { - struct budget_ci_ir *ir = from_tasklet(ir, t, msp430_irq_tasklet); + struct budget_ci_ir *ir = from_work(ir, t, msp430_irq_work); struct budget_ci *budget_ci = container_of(ir, typeof(*budget_ci), ir); struct rc_dev *dev = budget_ci->ir.dev; u32 command = ttpci_budget_debiread(&budget_ci->budget, DEBINOSWAP, DEBIADDR_IR, 2, 1, 0) >> 8; @@ -230,7 +231,7 @@ static int msp430_ir_init(struct budget_ci *budget_ci) budget_ci->ir.dev = dev; - tasklet_setup(&budget_ci->ir.msp430_irq_tasklet, msp430_ir_interrupt); + INIT_WORK(&budget_ci->ir.msp430_irq_work, msp430_ir_interrupt); SAA7146_IER_ENABLE(saa, MASK_06); saa7146_setgpio(saa, 3, SAA7146_GPIO_IRQHI); @@ -244,7 +245,7 @@ static void msp430_ir_deinit(struct budget_ci *budget_ci) SAA7146_IER_DISABLE(saa, MASK_06); saa7146_setgpio(saa, 3, SAA7146_GPIO_INPUT); - tasklet_kill(&budget_ci->ir.msp430_irq_tasklet); + cancel_work_sync(&budget_ci->ir.msp430_irq_work); rc_unregister_device(budget_ci->ir.dev); } @@ -348,10 +349,10 @@ static int ciintf_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot) return 0; } -static void ciintf_interrupt(struct tasklet_struct *t) +static void ciintf_interrupt(struct work_struct *t) { - struct budget_ci *budget_ci = from_tasklet(budget_ci, t, - ciintf_irq_tasklet); + struct budget_ci *budget_ci = from_work(budget_ci, t, + ciintf_irq_work); struct saa7146_dev *saa = budget_ci->budget.dev; unsigned int flags; @@ -492,7 +493,7 @@ static int ciintf_init(struct budget_ci *budget_ci) // Setup CI slot IRQ if (budget_ci->ci_irq) { - tasklet_setup(&budget_ci->ciintf_irq_tasklet, ciintf_interrupt); + INIT_WORK(&budget_ci->ciintf_irq_work, ciintf_interrupt); if (budget_ci->slot_status != SLOTSTATUS_NONE) { saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO); } else { @@ -532,7 +533,7 @@ static void ciintf_deinit(struct budget_ci *budget_ci) if (budget_ci->ci_irq) { SAA7146_IER_DISABLE(saa, MASK_03); saa7146_setgpio(saa, 0, SAA7146_GPIO_INPUT); - tasklet_kill(&budget_ci->ciintf_irq_tasklet); + cancel_work_sync(&budget_ci->ciintf_irq_work); } // reset interface @@ -558,13 +559,13 @@ static void budget_ci_irq(struct saa7146_dev *dev, u32 * isr) dprintk(8, "dev: %p, budget_ci: %p\n", dev, budget_ci); if (*isr & MASK_06) - tasklet_schedule(&budget_ci->ir.msp430_irq_tasklet); + queue_work(system_bh_wq, &budget_ci->ir.msp430_irq_work); if (*isr & MASK_10) ttpci_budget_irq10_handler(dev, isr); if ((*isr & MASK_03) && (budget_ci->budget.ci_present) && (budget_ci->ci_irq)) - tasklet_schedule(&budget_ci->ciintf_irq_tasklet); + queue_work(system_bh_wq, &budget_ci->ciintf_irq_work); } static u8 philips_su1278_tt_inittab[] = { diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c index 25f44c3eebf3..3443c12dc9f2 100644 --- a/drivers/media/pci/ttpci/budget-core.c +++ b/drivers/media/pci/ttpci/budget-core.c @@ -171,9 +171,9 @@ static int budget_read_fe_status(struct dvb_frontend *fe, return ret; } -static void vpeirq(struct tasklet_struct *t) +static void vpeirq(struct work_struct *t) { - struct budget *budget = from_tasklet(budget, t, vpe_tasklet); + struct budget *budget = from_work(budget, t, vpe_work); u8 *mem = (u8 *) (budget->grabbing); u32 olddma = budget->ttbp; u32 newdma = saa7146_read(budget->dev, PCI_VDP3); @@ -520,7 +520,7 @@ int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, /* upload all */ saa7146_write(dev, GPIO_CTRL, 0x000000); - tasklet_setup(&budget->vpe_tasklet, vpeirq); + INIT_WORK(&budget->vpe_work, vpeirq); /* frontend power on */ if (bi->type != BUDGET_FS_ACTIVY) @@ -557,7 +557,7 @@ int ttpci_budget_deinit(struct budget *budget) budget_unregister(budget); - tasklet_kill(&budget->vpe_tasklet); + cancel_work_sync(&budget->vpe_work); saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); @@ -575,7 +575,7 @@ void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr) dprintk(8, "dev: %p, budget: %p\n", dev, budget); if (*isr & MASK_10) - tasklet_schedule(&budget->vpe_tasklet); + queue_work(system_bh_wq, &budget->vpe_work); } void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port) diff --git a/drivers/media/pci/ttpci/budget.h b/drivers/media/pci/ttpci/budget.h index bd87432e6cde..a3ee75e326b4 100644 --- a/drivers/media/pci/ttpci/budget.h +++ b/drivers/media/pci/ttpci/budget.h @@ -12,6 +12,7 @@ #include #include +#include #include @@ -49,8 +50,8 @@ struct budget { unsigned char *grabbing; struct saa7146_pgtable pt; - struct tasklet_struct fidb_tasklet; - struct tasklet_struct vpe_tasklet; + struct work_struct fidb_work; + struct work_struct vpe_work; struct dmxdev dmxdev; struct dvb_demux demux; diff --git a/drivers/media/pci/tw5864/tw5864-core.c b/drivers/media/pci/tw5864/tw5864-core.c index 560ff1ddcc83..a58c268e94a8 100644 --- a/drivers/media/pci/tw5864/tw5864-core.c +++ b/drivers/media/pci/tw5864/tw5864-core.c @@ -144,7 +144,7 @@ static void tw5864_h264_isr(struct tw5864_dev *dev) cur_frame->gop_seqno = input->frame_gop_seqno; dev->h264_buf_w_index = next_frame_index; - tasklet_schedule(&dev->tasklet); + queue_work(system_bh_wq, &dev->work); cur_frame = next_frame; diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c index 8b1aae4b6319..ac2249626506 100644 --- a/drivers/media/pci/tw5864/tw5864-video.c +++ b/drivers/media/pci/tw5864/tw5864-video.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -175,7 +176,7 @@ static const unsigned int intra4x4_lambda3[] = { static v4l2_std_id tw5864_get_v4l2_std(enum tw5864_vid_std std); static enum tw5864_vid_std tw5864_from_v4l2_std(v4l2_std_id v4l2_std); -static void tw5864_handle_frame_task(struct tasklet_struct *t); +static void tw5864_handle_frame_task(struct work_struct *t); static void tw5864_handle_frame(struct tw5864_h264_frame *frame); static void tw5864_frame_interval_set(struct tw5864_input *input); @@ -1062,7 +1063,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr) dev->irqmask |= TW5864_INTR_VLC_DONE | TW5864_INTR_TIMER; tw5864_irqmask_apply(dev); - tasklet_setup(&dev->tasklet, tw5864_handle_frame_task); + INIT_WORK(&dev->work, tw5864_handle_frame_task); for (i = 0; i < TW5864_INPUTS; i++) { dev->inputs[i].root = dev; @@ -1079,7 +1080,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr) for (i = last_input_nr_registered; i >= 0; i--) tw5864_video_input_fini(&dev->inputs[i]); - tasklet_kill(&dev->tasklet); + cancel_work_sync(&dev->work); free_dma: for (i = last_dma_allocated; i >= 0; i--) { @@ -1198,7 +1199,7 @@ void tw5864_video_fini(struct tw5864_dev *dev) { int i; - tasklet_kill(&dev->tasklet); + cancel_work_sync(&dev->work); for (i = 0; i < TW5864_INPUTS; i++) tw5864_video_input_fini(&dev->inputs[i]); @@ -1315,9 +1316,9 @@ static int tw5864_is_motion_triggered(struct tw5864_h264_frame *frame) return detected; } -static void tw5864_handle_frame_task(struct tasklet_struct *t) +static void tw5864_handle_frame_task(struct work_struct *t) { - struct tw5864_dev *dev = from_tasklet(dev, t, tasklet); + struct tw5864_dev *dev = from_work(dev, t, work); unsigned long flags; int batch_size = H264_BUF_CNT; diff --git a/drivers/media/pci/tw5864/tw5864.h b/drivers/media/pci/tw5864/tw5864.h index a8b6fbd5b710..278373859098 100644 --- a/drivers/media/pci/tw5864/tw5864.h +++ b/drivers/media/pci/tw5864/tw5864.h @@ -12,6 +12,7 @@ #include #include #include +#include #include #include @@ -85,7 +86,7 @@ struct tw5864_input { int nr; /* input number */ struct tw5864_dev *root; struct mutex lock; /* used for vidq and vdev */ - spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ + spinlock_t slock; /* used for sync between ISR, work & V4L2 API */ struct video_device vdev; struct v4l2_ctrl_handler hdl; struct vb2_queue vidq; @@ -142,7 +143,7 @@ struct tw5864_h264_frame { /* global device status */ struct tw5864_dev { - spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ + spinlock_t slock; /* used for sync between ISR, work & V4L2 API */ struct v4l2_device v4l2_dev; struct tw5864_input inputs[TW5864_INPUTS]; #define H264_BUF_CNT 4 @@ -150,7 +151,7 @@ struct tw5864_dev { int h264_buf_r_index; int h264_buf_w_index; - struct tasklet_struct tasklet; + struct work_struct work; int encoder_busy; /* Input number to check next for ready raw picture (in RR fashion) */ diff --git a/drivers/media/platform/intel/pxa_camera.c b/drivers/media/platform/intel/pxa_camera.c index d904952bf00e..df0a3c559287 100644 --- a/drivers/media/platform/intel/pxa_camera.c +++ b/drivers/media/platform/intel/pxa_camera.c @@ -43,6 +43,7 @@ #include #include +#include #define PXA_CAM_VERSION "0.0.6" #define PXA_CAM_DRV_NAME "pxa27x-camera" @@ -683,7 +684,7 @@ struct pxa_camera_dev { unsigned int buf_sequence; struct pxa_buffer *active; - struct tasklet_struct task_eof; + struct work_struct task_eof; u32 save_cicr[5]; }; @@ -1146,9 +1147,9 @@ static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev) clk_disable_unprepare(pcdev->clk); } -static void pxa_camera_eof(struct tasklet_struct *t) +static void pxa_camera_eof(struct work_struct *t) { - struct pxa_camera_dev *pcdev = from_tasklet(pcdev, t, task_eof); + struct pxa_camera_dev *pcdev = from_work(pcdev, t, task_eof); unsigned long cifr; struct pxa_buffer *buf; @@ -1185,7 +1186,7 @@ static irqreturn_t pxa_camera_irq(int irq, void *data) if (status & CISR_EOF) { cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_EOFM; __raw_writel(cicr0, pcdev->base + CICR0); - tasklet_schedule(&pcdev->task_eof); + queue_work(system_bh_wq, &pcdev->task_eof); } return IRQ_HANDLED; @@ -2383,7 +2384,7 @@ static int pxa_camera_probe(struct platform_device *pdev) } } - tasklet_setup(&pcdev->task_eof, pxa_camera_eof); + INIT_WORK(&pcdev->task_eof, pxa_camera_eof); pxa_camera_activate(pcdev); @@ -2409,7 +2410,7 @@ static int pxa_camera_probe(struct platform_device *pdev) return 0; exit_deactivate: pxa_camera_deactivate(pcdev); - tasklet_kill(&pcdev->task_eof); + cancel_work_sync(&pcdev->task_eof); exit_free_dma: dma_release_channel(pcdev->dma_chans[2]); exit_free_dma_u: @@ -2428,7 +2429,7 @@ static void pxa_camera_remove(struct platform_device *pdev) struct pxa_camera_dev *pcdev = platform_get_drvdata(pdev); pxa_camera_deactivate(pcdev); - tasklet_kill(&pcdev->task_eof); + cancel_work_sync(&pcdev->task_eof); dma_release_channel(pcdev->dma_chans[0]); dma_release_channel(pcdev->dma_chans[1]); dma_release_channel(pcdev->dma_chans[2]); diff --git a/drivers/media/platform/marvell/mcam-core.c b/drivers/media/platform/marvell/mcam-core.c index 66688b4aece5..d6b96a7039be 100644 --- a/drivers/media/platform/marvell/mcam-core.c +++ b/drivers/media/platform/marvell/mcam-core.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -439,9 +440,9 @@ static void mcam_ctlr_dma_vmalloc(struct mcam_camera *cam) /* * Copy data out to user space in the vmalloc case */ -static void mcam_frame_tasklet(struct tasklet_struct *t) +static void mcam_frame_work(struct work_struct *t) { - struct mcam_camera *cam = from_tasklet(cam, t, s_tasklet); + struct mcam_camera *cam = from_work(cam, t, s_work); int i; unsigned long flags; struct mcam_vb_buffer *buf; @@ -480,7 +481,7 @@ static void mcam_frame_tasklet(struct tasklet_struct *t) /* - * Make sure our allocated buffers are up to the task. + * Make sure our allocated buffers are up to the work. */ static int mcam_check_dma_buffers(struct mcam_camera *cam) { @@ -493,7 +494,7 @@ static int mcam_check_dma_buffers(struct mcam_camera *cam) static void mcam_vmalloc_done(struct mcam_camera *cam, int frame) { - tasklet_schedule(&cam->s_tasklet); + queue_work(system_bh_wq, &cam->s_work); } #else /* MCAM_MODE_VMALLOC */ @@ -1305,7 +1306,7 @@ static int mcam_setup_vb2(struct mcam_camera *cam) break; case B_vmalloc: #ifdef MCAM_MODE_VMALLOC - tasklet_setup(&cam->s_tasklet, mcam_frame_tasklet); + INIT_WORK(&cam->s_work, mcam_frame_work); vq->ops = &mcam_vb2_ops; vq->mem_ops = &vb2_vmalloc_memops; cam->dma_setup = mcam_ctlr_dma_vmalloc; diff --git a/drivers/media/platform/marvell/mcam-core.h b/drivers/media/platform/marvell/mcam-core.h index 51e66db45af6..0d4b953dbb23 100644 --- a/drivers/media/platform/marvell/mcam-core.h +++ b/drivers/media/platform/marvell/mcam-core.h @@ -9,6 +9,7 @@ #include #include +#include #include #include #include @@ -167,7 +168,7 @@ struct mcam_camera { unsigned int dma_buf_size; /* allocated size */ void *dma_bufs[MAX_DMA_BUFS]; /* Internal buffer addresses */ dma_addr_t dma_handles[MAX_DMA_BUFS]; /* Buffer bus addresses */ - struct tasklet_struct s_tasklet; + struct work_struct s_work; #endif unsigned int sequence; /* Frame sequence number */ unsigned int buf_seq[MAX_DMA_BUFS]; /* Sequence for individual bufs */ diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c index e4cf27b5a072..22b359569a10 100644 --- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c +++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c @@ -33,6 +33,7 @@ #include #include #include +#include #include "c8sectpfe-common.h" #include "c8sectpfe-core.h" @@ -73,16 +74,16 @@ static void c8sectpfe_timer_interrupt(struct timer_list *t) /* is this descriptor initialised and TP enabled */ if (channel->irec && readl(channel->irec + DMA_PRDS_TPENABLE)) - tasklet_schedule(&channel->tsklet); + queue_work(system_bh_wq, &channel->tsklet); } fei->timer.expires = jiffies + msecs_to_jiffies(POLL_MSECS); add_timer(&fei->timer); } -static void channel_swdemux_tsklet(struct tasklet_struct *t) +static void channel_swdemux_tsklet(struct work_struct *t) { - struct channel_info *channel = from_tasklet(channel, t, tsklet); + struct channel_info *channel = from_work(channel, t, tsklet); struct c8sectpfei *fei; unsigned long wp, rp; int pos, num_packets, n, size; @@ -211,7 +212,7 @@ static int c8sectpfe_start_feed(struct dvb_demux_feed *dvbdmxfeed) dev_dbg(fei->dev, "Starting channel=%p\n", channel); - tasklet_setup(&channel->tsklet, channel_swdemux_tsklet); + INIT_WORK(&channel->tsklet, channel_swdemux_tsklet); /* Reset the internal inputblock sram pointers */ writel(channel->fifo, @@ -304,7 +305,7 @@ static int c8sectpfe_stop_feed(struct dvb_demux_feed *dvbdmxfeed) /* disable this channels descriptor */ writel(0, channel->irec + DMA_PRDS_TPENABLE); - tasklet_disable(&channel->tsklet); + disable_work_sync(&channel->tsklet); /* now request memdma channel goes idle */ idlereq = (1 << channel->tsin_id) | IDLEREQ; @@ -631,8 +632,8 @@ static int configure_memdma_and_inputblock(struct c8sectpfei *fei, writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSWP_TP(0)); writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSRP_TP(0)); - /* initialize tasklet */ - tasklet_setup(&tsin->tsklet, channel_swdemux_tsklet); + /* initialize work */ + INIT_WORK(&tsin->tsklet, channel_swdemux_tsklet); return 0; diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h index bf377cc82225..d63f0ee83615 100644 --- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h +++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h @@ -51,7 +51,7 @@ struct channel_info { unsigned long fifo; struct completion idle_completion; - struct tasklet_struct tsklet; + struct work_struct tsklet; struct c8sectpfei *fei; void __iomem *irec; diff --git a/drivers/media/radio/wl128x/fmdrv.h b/drivers/media/radio/wl128x/fmdrv.h index da8920169df8..85282f638c4a 100644 --- a/drivers/media/radio/wl128x/fmdrv.h +++ b/drivers/media/radio/wl128x/fmdrv.h @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -200,15 +201,15 @@ struct fmdev { int streg_cbdata; /* status of ST registration */ struct sk_buff_head rx_q; /* RX queue */ - struct tasklet_struct rx_task; /* RX Tasklet */ + struct work_struct rx_task; /* RX Work */ struct sk_buff_head tx_q; /* TX queue */ - struct tasklet_struct tx_task; /* TX Tasklet */ + struct work_struct tx_task; /* TX Work */ unsigned long last_tx_jiffies; /* Timestamp of last pkt sent */ atomic_t tx_cnt; /* Number of packets can send at a time */ struct sk_buff *resp_skb; /* Response from the chip */ - /* Main task completion handler */ + /* Main work completion handler */ struct completion maintask_comp; /* Opcode of last command sent to the chip */ u8 pre_op; diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c index 3da8e5102bec..52290bb4a4ad 100644 --- a/drivers/media/radio/wl128x/fmdrv_common.c +++ b/drivers/media/radio/wl128x/fmdrv_common.c @@ -9,7 +9,7 @@ * one Channel-8 command to be sent to the chip). * 2) Sending each Channel-8 command to the chip and reading * response back over Shared Transport. - * 3) Managing TX and RX Queues and Tasklets. + * 3) Managing TX and RX Queues and Works. * 4) Handling FM Interrupt packet and taking appropriate action. * 5) Loading FM firmware to the chip (common, FM TX, and FM RX * firmware files based on mode selection) @@ -29,6 +29,7 @@ #include "fmdrv_v4l2.h" #include "fmdrv_common.h" #include +#include #include "fmdrv_rx.h" #include "fmdrv_tx.h" @@ -244,10 +245,10 @@ void fmc_update_region_info(struct fmdev *fmdev, u8 region_to_set) } /* - * FM common sub-module will schedule this tasklet whenever it receives + * FM common sub-module will schedule this work whenever it receives * FM packet from ST driver. */ -static void recv_tasklet(struct tasklet_struct *t) +static void recv_work(struct work_struct *t) { struct fmdev *fmdev; struct fm_irq *irq_info; @@ -256,7 +257,7 @@ static void recv_tasklet(struct tasklet_struct *t) u8 num_fm_hci_cmds; unsigned long flags; - fmdev = from_tasklet(fmdev, t, tx_task); + fmdev = from_work(fmdev, t, tx_task); irq_info = &fmdev->irq_info; /* Process all packets in the RX queue */ while ((skb = skb_dequeue(&fmdev->rx_q))) { @@ -322,22 +323,22 @@ static void recv_tasklet(struct tasklet_struct *t) /* * Check flow control field. If Num_FM_HCI_Commands field is - * not zero, schedule FM TX tasklet. + * not zero, schedule FM TX work. */ if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt)) if (!skb_queue_empty(&fmdev->tx_q)) - tasklet_schedule(&fmdev->tx_task); + queue_work(system_bh_wq, &fmdev->tx_task); } } -/* FM send tasklet: is scheduled when FM packet has to be sent to chip */ -static void send_tasklet(struct tasklet_struct *t) +/* FM send work: is scheduled when FM packet has to be sent to chip */ +static void send_work(struct work_struct *t) { struct fmdev *fmdev; struct sk_buff *skb; int len; - fmdev = from_tasklet(fmdev, t, tx_task); + fmdev = from_work(fmdev, t, tx_task); if (!atomic_read(&fmdev->tx_cnt)) return; @@ -366,7 +367,7 @@ static void send_tasklet(struct tasklet_struct *t) if (len < 0) { kfree_skb(skb); fmdev->resp_comp = NULL; - fmerr("TX tasklet failed to send skb(%p)\n", skb); + fmerr("TX work failed to send skb(%p)\n", skb); atomic_set(&fmdev->tx_cnt, 1); } else { fmdev->last_tx_jiffies = jiffies; @@ -374,7 +375,7 @@ static void send_tasklet(struct tasklet_struct *t) } /* - * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for + * Queues FM Channel-8 packet to FM TX queue and schedules FM TX work for * transmission */ static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, @@ -440,7 +441,7 @@ static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, fm_cb(skb)->completion = wait_completion; skb_queue_tail(&fmdev->tx_q, skb); - tasklet_schedule(&fmdev->tx_task); + queue_work(system_bh_wq, &fmdev->tx_task); return 0; } @@ -462,7 +463,7 @@ int fmc_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload, if (!wait_for_completion_timeout(&fmdev->maintask_comp, FM_DRV_TX_TIMEOUT)) { - fmerr("Timeout(%d sec),didn't get regcompletion signal from RX tasklet\n", + fmerr("Timeout(%d sec),didn't get regcompletion signal from RX work\n", jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); return -ETIMEDOUT; } @@ -1455,7 +1456,7 @@ static long fm_st_receive(void *arg, struct sk_buff *skb) memcpy(skb_push(skb, 1), &skb->cb[0], 1); skb_queue_tail(&fmdev->rx_q, skb); - tasklet_schedule(&fmdev->rx_task); + queue_work(system_bh_wq, &fmdev->rx_task); return 0; } @@ -1537,13 +1538,13 @@ int fmc_prepare(struct fmdev *fmdev) spin_lock_init(&fmdev->rds_buff_lock); spin_lock_init(&fmdev->resp_skb_lock); - /* Initialize TX queue and TX tasklet */ + /* Initialize TX queue and TX work */ skb_queue_head_init(&fmdev->tx_q); - tasklet_setup(&fmdev->tx_task, send_tasklet); + INIT_WORK(&fmdev->tx_task, send_work); - /* Initialize RX Queue and RX tasklet */ + /* Initialize RX Queue and RX work */ skb_queue_head_init(&fmdev->rx_q); - tasklet_setup(&fmdev->rx_task, recv_tasklet); + INIT_WORK(&fmdev->rx_task, recv_work); fmdev->irq_info.stage = 0; atomic_set(&fmdev->tx_cnt, 1); @@ -1589,8 +1590,8 @@ int fmc_release(struct fmdev *fmdev) /* Service pending read */ wake_up_interruptible(&fmdev->rx.rds.read_queue); - tasklet_kill(&fmdev->tx_task); - tasklet_kill(&fmdev->rx_task); + cancel_work_sync(&fmdev->tx_task); + cancel_work_sync(&fmdev->rx_task); skb_queue_purge(&fmdev->tx_q); skb_queue_purge(&fmdev->rx_q); diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index c76ba24c1f55..a2e2e58b7506 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -774,7 +774,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len, /* * Schedule work that can't be done in interrupt handlers - * (mceusb_dev_recv() and mce_write_callback()) nor tasklets. + * (mceusb_dev_recv() and mce_write_callback()) nor works. * Invokes mceusb_deferred_kevent() for recovering from * error events specified by the kevent bit field. */ diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index 79faa2560613..55eeb00f1126 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -19,6 +19,7 @@ #include #include +#include #include #include @@ -139,7 +140,7 @@ struct ttusb_dec { int v_pes_postbytes; struct list_head urb_frame_list; - struct tasklet_struct urb_tasklet; + struct work_struct urb_work; spinlock_t urb_frame_list_lock; struct dvb_demux_filter *audio_filter; @@ -766,9 +767,9 @@ static void ttusb_dec_process_urb_frame(struct ttusb_dec *dec, u8 *b, } } -static void ttusb_dec_process_urb_frame_list(struct tasklet_struct *t) +static void ttusb_dec_process_urb_frame_list(struct work_struct *t) { - struct ttusb_dec *dec = from_tasklet(dec, t, urb_tasklet); + struct ttusb_dec *dec = from_work(dec, t, urb_work); struct list_head *item; struct urb_frame *frame; unsigned long flags; @@ -822,7 +823,7 @@ static void ttusb_dec_process_urb(struct urb *urb) spin_unlock_irqrestore(&dec->urb_frame_list_lock, flags); - tasklet_schedule(&dec->urb_tasklet); + queue_work(system_bh_wq, &dec->urb_work); } } } else { @@ -1198,11 +1199,11 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) return 0; } -static void ttusb_dec_init_tasklet(struct ttusb_dec *dec) +static void ttusb_dec_init_work(struct ttusb_dec *dec) { spin_lock_init(&dec->urb_frame_list_lock); INIT_LIST_HEAD(&dec->urb_frame_list); - tasklet_setup(&dec->urb_tasklet, ttusb_dec_process_urb_frame_list); + INIT_WORK(&dec->urb_work, ttusb_dec_process_urb_frame_list); } static int ttusb_init_rc( struct ttusb_dec *dec) @@ -1588,12 +1589,12 @@ static void ttusb_dec_exit_usb(struct ttusb_dec *dec) ttusb_dec_free_iso_urbs(dec); } -static void ttusb_dec_exit_tasklet(struct ttusb_dec *dec) +static void ttusb_dec_exit_work(struct ttusb_dec *dec) { struct list_head *item; struct urb_frame *frame; - tasklet_kill(&dec->urb_tasklet); + cancel_work_sync(&dec->urb_work); while ((item = dec->urb_frame_list.next) != &dec->urb_frame_list) { frame = list_entry(item, struct urb_frame, urb_frame_list); @@ -1703,7 +1704,7 @@ static int ttusb_dec_probe(struct usb_interface *intf, ttusb_dec_init_v_pes(dec); ttusb_dec_init_filters(dec); - ttusb_dec_init_tasklet(dec); + ttusb_dec_init_work(dec); dec->active = 1; @@ -1729,7 +1730,7 @@ static void ttusb_dec_disconnect(struct usb_interface *intf) dprintk("%s\n", __func__); if (dec->active) { - ttusb_dec_exit_tasklet(dec); + ttusb_dec_exit_work(dec); ttusb_dec_exit_filters(dec); if(enable_rc) ttusb_dec_exit_rc(dec); From patchwork Wed Mar 27 16:03:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Allen Pais X-Patchwork-Id: 13606986 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C51A52D627; Wed, 27 Mar 2024 16:03:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555414; cv=none; b=qE1eI4q9lfkiHuS6M2V61F6OyGrkHbvwPwJyFINLa4IFmklORYdjv6aJ5hx9jypKqrRpFtGMmAQ/1zyeVhskmcPRp0yNRKxjhkwBTjB0tZ/20ZTIxc3QgPDo1uWqSSXiv9seFJljvo3j5fbPiZM+dWGQFcUitWEaVtetk7YJAtU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555414; c=relaxed/simple; bh=BSP+hIJ3eQQBOJ/Xy/Cnk5p2RDmdIBxnmlmwMCqaK38=; 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Wed, 27 Mar 2024 09:03:22 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B9746208D086 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1711555402; bh=S5lLc/TKjKgLj2KRCupGUxZypv5EqqckSheFEHjTZo0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B+ym9QtzPjsCzQpAi+G/a9jqgmuDp1pQ0x11/5fPPNq+S99rYrOWTL4fZQErlKL31 2/D2PTNSFezraC00rNbj+aSqvFO5cywnHjVRnLCadp8t7LijfadQAEa93K3tZgTP/6 oh3oKkX+nJsVjDGbdj0pZ+LLe7IDRIWMl0JU2e+U= From: Allen Pais To: linux-kernel@vger.kernel.org Cc: tj@kernel.org, keescook@chromium.org, vkoul@kernel.org, marcan@marcan.st, sven@svenpeter.dev, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, manivannan.sadhasivam@linaro.org, vireshk@kernel.org, Frank.Li@nxp.com, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, haijie1@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, afaerber@suse.de, logang@deltatee.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, andersson@kernel.org, konrad.dybcio@linaro.org, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, linus.walleij@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, peter.ujfalusi@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, jassisinghbrar@gmail.com, mchehab@kernel.org, maintainers@bluecherrydvr.com, aubin.constans@microchip.com, ulf.hansson@linaro.org, manuel.lauss@gmail.com, mirq-linux@rere.qmqm.pl, jh80.chung@samsung.com, oakad@yahoo.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, brucechang@via.com.tw, HaraldWelte@viatech.com, pierre@ossman.eu, duncan.sands@free.fr, stern@rowland.harvard.edu, oneukum@suse.com, openipmi-developer@lists.sourceforge.net, dmaengine@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-mediatek@lists.infradead.org, linux-actions@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH 9/9] mmc: Convert from tasklet to BH workqueue Date: Wed, 27 Mar 2024 16:03:14 +0000 Message-Id: <20240327160314.9982-10-apais@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240327160314.9982-1-apais@linux.microsoft.com> References: <20240327160314.9982-1-apais@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The only generic interface to execute asynchronously in the BH context is tasklet; however, it's marked deprecated and has some design flaws. To replace tasklets, BH workqueue support was recently added. A BH workqueue behaves similarly to regular workqueues except that the queued work items are executed in the BH context. This patch converts drivers/infiniband/* from tasklet to BH workqueue. Based on the work done by Tejun Heo Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 Signed-off-by: Allen Pais Reviewed-by: Christian Loehle Tested-by: Christian Loehle Acked-by: Michał Mirosław Tested-by: Aubin Constans Acked-by: Aubin Constans --- drivers/mmc/host/atmel-mci.c | 35 ++++----- drivers/mmc/host/au1xmmc.c | 37 ++++----- drivers/mmc/host/cb710-mmc.c | 15 ++-- drivers/mmc/host/cb710-mmc.h | 3 +- drivers/mmc/host/dw_mmc.c | 25 ++++--- drivers/mmc/host/dw_mmc.h | 9 ++- drivers/mmc/host/omap.c | 17 +++-- drivers/mmc/host/renesas_sdhi.h | 3 +- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 24 +++--- drivers/mmc/host/renesas_sdhi_sys_dmac.c | 9 +-- drivers/mmc/host/sdhci-bcm-kona.c | 2 +- drivers/mmc/host/tifm_sd.c | 15 ++-- drivers/mmc/host/tmio_mmc.h | 3 +- drivers/mmc/host/tmio_mmc_core.c | 4 +- drivers/mmc/host/uniphier-sd.c | 13 ++-- drivers/mmc/host/via-sdmmc.c | 25 ++++--- drivers/mmc/host/wbsd.c | 75 ++++++++++--------- drivers/mmc/host/wbsd.h | 10 +-- 18 files changed, 167 insertions(+), 157 deletions(-) diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index dba826db739a..0a92a7fd020f 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -284,12 +285,12 @@ struct atmel_mci_dma { * EVENT_DATA_ERROR is pending. * @stop_cmdr: Value to be loaded into CMDR when the stop command is * to be sent. - * @tasklet: Tasklet running the request state machine. + * @work: Work running the request state machine. * @pending_events: Bitmask of events flagged by the interrupt handler - * to be processed by the tasklet. + * to be processed by the work. * @completed_events: Bitmask of events which the state machine has * processed. - * @state: Tasklet state. + * @state: Work state. * @queue: List of slots waiting for access to the controller. * @need_clock_update: Update the clock rate before the next request. * @need_reset: Reset controller before next request. @@ -363,7 +364,7 @@ struct atmel_mci { u32 data_status; u32 stop_cmdr; - struct tasklet_struct tasklet; + struct work_struct work; unsigned long pending_events; unsigned long completed_events; enum atmel_mci_state state; @@ -761,7 +762,7 @@ static void atmci_timeout_timer(struct timer_list *t) host->need_reset = 1; host->state = STATE_END_REQUEST; smp_wmb(); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host, @@ -983,7 +984,7 @@ static void atmci_pdc_complete(struct atmel_mci *host) dev_dbg(&host->pdev->dev, "(%s) set pending xfer complete\n", __func__); atmci_set_pending(host, EVENT_XFER_COMPLETE); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } static void atmci_dma_cleanup(struct atmel_mci *host) @@ -997,7 +998,7 @@ static void atmci_dma_cleanup(struct atmel_mci *host) } /* - * This function is called by the DMA driver from tasklet context. + * This function is called by the DMA driver from work context. */ static void atmci_dma_complete(void *arg) { @@ -1020,7 +1021,7 @@ static void atmci_dma_complete(void *arg) dev_dbg(&host->pdev->dev, "(%s) set pending xfer complete\n", __func__); atmci_set_pending(host, EVENT_XFER_COMPLETE); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); /* * Regardless of what the documentation says, we have @@ -1033,7 +1034,7 @@ static void atmci_dma_complete(void *arg) * haven't seen all the potential error bits yet. * * The interrupt handler will schedule a different - * tasklet to finish things up when the data transfer + * work to finish things up when the data transfer * is completely done. * * We may not complete the mmc request here anyway @@ -1765,9 +1766,9 @@ static void atmci_detect_change(struct timer_list *t) } } -static void atmci_tasklet_func(struct tasklet_struct *t) +static void atmci_work_func(struct work_struct *t) { - struct atmel_mci *host = from_tasklet(host, t, tasklet); + struct atmel_mci *host = from_work(host, t, work); struct mmc_request *mrq = host->mrq; struct mmc_data *data = host->data; enum atmel_mci_state state = host->state; @@ -1779,7 +1780,7 @@ static void atmci_tasklet_func(struct tasklet_struct *t) state = host->state; dev_vdbg(&host->pdev->dev, - "tasklet: state %u pending/completed/mask %lx/%lx/%x\n", + "work: state %u pending/completed/mask %lx/%lx/%x\n", state, host->pending_events, host->completed_events, atmci_readl(host, ATMCI_IMR)); @@ -2141,7 +2142,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id) dev_dbg(&host->pdev->dev, "set pending data error\n"); smp_wmb(); atmci_set_pending(host, EVENT_DATA_ERROR); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } if (pending & ATMCI_TXBUFE) { @@ -2210,7 +2211,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id) smp_wmb(); dev_dbg(&host->pdev->dev, "set pending notbusy\n"); atmci_set_pending(host, EVENT_NOTBUSY); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } if (pending & ATMCI_NOTBUSY) { @@ -2219,7 +2220,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id) smp_wmb(); dev_dbg(&host->pdev->dev, "set pending notbusy\n"); atmci_set_pending(host, EVENT_NOTBUSY); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } if (pending & ATMCI_RXRDY) @@ -2234,7 +2235,7 @@ static irqreturn_t atmci_interrupt(int irq, void *dev_id) smp_wmb(); dev_dbg(&host->pdev->dev, "set pending cmd rdy\n"); atmci_set_pending(host, EVENT_CMD_RDY); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } if (pending & (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB)) @@ -2530,7 +2531,7 @@ static int atmci_probe(struct platform_device *pdev) host->mapbase = regs->start; - tasklet_setup(&host->tasklet, atmci_tasklet_func); + INIT_WORK(&host->work, atmci_work_func); ret = request_irq(irq, atmci_interrupt, 0, dev_name(&pdev->dev), host); if (ret) { diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index b5a5c6a2fe8b..c86fa7d2ebb7 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -42,6 +42,7 @@ #include #include #include +#include #include #include @@ -113,8 +114,8 @@ struct au1xmmc_host { int irq; - struct tasklet_struct finish_task; - struct tasklet_struct data_task; + struct work_struct finish_task; + struct work_struct data_task; struct au1xmmc_platform_data *platdata; struct platform_device *pdev; struct resource *ioarea; @@ -253,9 +254,9 @@ static void au1xmmc_finish_request(struct au1xmmc_host *host) mmc_request_done(host->mmc, mrq); } -static void au1xmmc_tasklet_finish(struct tasklet_struct *t) +static void au1xmmc_work_finish(struct work_struct *t) { - struct au1xmmc_host *host = from_tasklet(host, t, finish_task); + struct au1xmmc_host *host = from_work(host, t, finish_task); au1xmmc_finish_request(host); } @@ -363,9 +364,9 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status) au1xmmc_finish_request(host); } -static void au1xmmc_tasklet_data(struct tasklet_struct *t) +static void au1xmmc_work_data(struct work_struct *t) { - struct au1xmmc_host *host = from_tasklet(host, t, data_task); + struct au1xmmc_host *host = from_work(host, t, data_task); u32 status = __raw_readl(HOST_STATUS(host)); au1xmmc_data_complete(host, status); @@ -425,7 +426,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host) if (host->flags & HOST_F_STOP) SEND_STOP(host); - tasklet_schedule(&host->data_task); + queue_work(system_bh_wq, &host->data_task); } } @@ -505,7 +506,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host) if (host->flags & HOST_F_STOP) SEND_STOP(host); - tasklet_schedule(&host->data_task); + queue_work(system_bh_wq, &host->data_task); } } @@ -561,7 +562,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status) if (!trans || cmd->error) { IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); - tasklet_schedule(&host->finish_task); + queue_work(system_bh_wq, &host->finish_task); return; } @@ -797,7 +798,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id) IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH); /* IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); */ - tasklet_schedule(&host->finish_task); + queue_work(system_bh_wq, &host->finish_task); } #if 0 else if (status & SD_STATUS_DD) { @@ -806,7 +807,7 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id) au1xmmc_receive_pio(host); else { au1xmmc_data_complete(host, status); - /* tasklet_schedule(&host->data_task); */ + /* queue_work(system_bh_wq, &host->data_task); */ } } #endif @@ -854,7 +855,7 @@ static void au1xmmc_dbdma_callback(int irq, void *dev_id) if (host->flags & HOST_F_STOP) SEND_STOP(host); - tasklet_schedule(&host->data_task); + queue_work(system_bh_wq, &host->data_task); } static int au1xmmc_dbdma_init(struct au1xmmc_host *host) @@ -1039,9 +1040,9 @@ static int au1xmmc_probe(struct platform_device *pdev) if (host->platdata) mmc->caps &= ~(host->platdata->mask_host_caps); - tasklet_setup(&host->data_task, au1xmmc_tasklet_data); + INIT_WORK(&host->data_task, au1xmmc_work_data); - tasklet_setup(&host->finish_task, au1xmmc_tasklet_finish); + INIT_WORK(&host->finish_task, au1xmmc_work_finish); if (has_dbdma()) { ret = au1xmmc_dbdma_init(host); @@ -1091,8 +1092,8 @@ static int au1xmmc_probe(struct platform_device *pdev) if (host->flags & HOST_F_DBDMA) au1xmmc_dbdma_shutdown(host); - tasklet_kill(&host->data_task); - tasklet_kill(&host->finish_task); + cancel_work_sync(&host->data_task); + cancel_work_sync(&host->finish_task); if (host->platdata && host->platdata->cd_setup && !(mmc->caps & MMC_CAP_NEEDS_POLL)) @@ -1135,8 +1136,8 @@ static void au1xmmc_remove(struct platform_device *pdev) __raw_writel(0, HOST_CONFIG2(host)); wmb(); /* drain writebuffer */ - tasklet_kill(&host->data_task); - tasklet_kill(&host->finish_task); + cancel_work_sync(&host->data_task); + cancel_work_sync(&host->finish_task); if (host->flags & HOST_F_DBDMA) au1xmmc_dbdma_shutdown(host); diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c index 0aec33b88bef..eebb6797e785 100644 --- a/drivers/mmc/host/cb710-mmc.c +++ b/drivers/mmc/host/cb710-mmc.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "cb710-mmc.h" #define CB710_MMC_REQ_TIMEOUT_MS 2000 @@ -493,7 +494,7 @@ static void cb710_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) if (!cb710_mmc_command(mmc, mrq->cmd) && mrq->stop) cb710_mmc_command(mmc, mrq->stop); - tasklet_schedule(&reader->finish_req_tasklet); + queue_work(system_bh_wq, &reader->finish_req_work); } static int cb710_mmc_powerup(struct cb710_slot *slot) @@ -646,10 +647,10 @@ static int cb710_mmc_irq_handler(struct cb710_slot *slot) return 1; } -static void cb710_mmc_finish_request_tasklet(struct tasklet_struct *t) +static void cb710_mmc_finish_request_work(struct work_struct *t) { - struct cb710_mmc_reader *reader = from_tasklet(reader, t, - finish_req_tasklet); + struct cb710_mmc_reader *reader = from_work(reader, t, + finish_req_work); struct mmc_request *mrq = reader->mrq; reader->mrq = NULL; @@ -718,8 +719,8 @@ static int cb710_mmc_init(struct platform_device *pdev) reader = mmc_priv(mmc); - tasklet_setup(&reader->finish_req_tasklet, - cb710_mmc_finish_request_tasklet); + INIT_WORK(&reader->finish_req_work, + cb710_mmc_finish_request_work); spin_lock_init(&reader->irq_lock); cb710_dump_regs(chip, CB710_DUMP_REGS_MMC); @@ -763,7 +764,7 @@ static void cb710_mmc_exit(struct platform_device *pdev) cb710_write_port_32(slot, CB710_MMC_CONFIG_PORT, 0); cb710_write_port_16(slot, CB710_MMC_CONFIGB_PORT, 0); - tasklet_kill(&reader->finish_req_tasklet); + cancel_work_sync(&reader->finish_req_work); mmc_free_host(mmc); } diff --git a/drivers/mmc/host/cb710-mmc.h b/drivers/mmc/host/cb710-mmc.h index 5e053077dbed..b35ab8736374 100644 --- a/drivers/mmc/host/cb710-mmc.h +++ b/drivers/mmc/host/cb710-mmc.h @@ -8,10 +8,11 @@ #define LINUX_CB710_MMC_H #include +#include /* per-MMC-reader structure */ struct cb710_mmc_reader { - struct tasklet_struct finish_req_tasklet; + struct work_struct finish_req_work; struct mmc_request *mrq; spinlock_t irq_lock; unsigned char last_power_mode; diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 8e2d676b9239..ee6f892bc0d8 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -36,6 +36,7 @@ #include #include #include +#include #include "dw_mmc.h" @@ -493,7 +494,7 @@ static void dw_mci_dmac_complete_dma(void *arg) */ if (data) { set_bit(EVENT_XFER_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } } @@ -1834,7 +1835,7 @@ static enum hrtimer_restart dw_mci_fault_timer(struct hrtimer *t) if (!host->data_status) { host->data_status = SDMMC_INT_DCRC; set_bit(EVENT_DATA_ERROR, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } spin_unlock_irqrestore(&host->irq_lock, flags); @@ -2056,9 +2057,9 @@ static bool dw_mci_clear_pending_data_complete(struct dw_mci *host) return true; } -static void dw_mci_tasklet_func(struct tasklet_struct *t) +static void dw_mci_work_func(struct work_struct *t) { - struct dw_mci *host = from_tasklet(host, t, tasklet); + struct dw_mci *host = from_work(host, t, work); struct mmc_data *data; struct mmc_command *cmd; struct mmc_request *mrq; @@ -2113,7 +2114,7 @@ static void dw_mci_tasklet_func(struct tasklet_struct *t) * will waste a bit of time (we already know * the command was bad), it can't cause any * errors since it's possible it would have - * taken place anyway if this tasklet got + * taken place anyway if this work got * delayed. Allowing the transfer to take place * avoids races and keeps things simple. */ @@ -2706,7 +2707,7 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status) smp_wmb(); /* drain writebuffer */ set_bit(EVENT_CMD_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); dw_mci_start_fault_timer(host); } @@ -2774,7 +2775,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) set_bit(EVENT_DATA_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); spin_unlock(&host->irq_lock); } @@ -2793,7 +2794,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) dw_mci_read_data_pio(host, true); } set_bit(EVENT_DATA_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); spin_unlock(&host->irq_lock); } @@ -3098,7 +3099,7 @@ static void dw_mci_cmd11_timer(struct timer_list *t) host->cmd_status = SDMMC_INT_RTO; set_bit(EVENT_CMD_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); } static void dw_mci_cto_timer(struct timer_list *t) @@ -3144,7 +3145,7 @@ static void dw_mci_cto_timer(struct timer_list *t) */ host->cmd_status = SDMMC_INT_RTO; set_bit(EVENT_CMD_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); break; default: dev_warn(host->dev, "Unexpected command timeout, state %d\n", @@ -3195,7 +3196,7 @@ static void dw_mci_dto_timer(struct timer_list *t) host->data_status = SDMMC_INT_DRTO; set_bit(EVENT_DATA_ERROR, &host->pending_events); set_bit(EVENT_DATA_COMPLETE, &host->pending_events); - tasklet_schedule(&host->tasklet); + queue_work(system_bh_wq, &host->work); break; default: dev_warn(host->dev, "Unexpected data timeout, state %d\n", @@ -3435,7 +3436,7 @@ int dw_mci_probe(struct dw_mci *host) else host->fifo_reg = host->regs + DATA_240A_OFFSET; - tasklet_setup(&host->tasklet, dw_mci_tasklet_func); + INIT_WORK(&host->work, dw_mci_work_func); ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host); if (ret) diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 4ed81f94f7ca..d17f398a0432 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -17,6 +17,7 @@ #include #include #include +#include enum dw_mci_state { STATE_IDLE = 0, @@ -89,12 +90,12 @@ struct dw_mci_dma_slave { * @stop_cmdr: Value to be loaded into CMDR when the stop command is * to be sent. * @dir_status: Direction of current transfer. - * @tasklet: Tasklet running the request state machine. + * @work: Work running the request state machine. * @pending_events: Bitmask of events flagged by the interrupt handler - * to be processed by the tasklet. + * to be processed by the work. * @completed_events: Bitmask of events which the state machine has * processed. - * @state: Tasklet state. + * @state: Work state. * @queue: List of slots waiting for access to the controller. * @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus * rate and timeout calculations. @@ -194,7 +195,7 @@ struct dw_mci { u32 data_status; u32 stop_cmdr; u32 dir_status; - struct tasklet_struct tasklet; + struct work_struct work; unsigned long pending_events; unsigned long completed_events; enum dw_mci_state state; diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 088f8ed4fdc4..d85bae7b9cba 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -28,6 +28,7 @@ #include #include #include +#include #define OMAP_MMC_REG_CMD 0x00 @@ -105,7 +106,7 @@ struct mmc_omap_slot { u16 power_mode; unsigned int fclk_freq; - struct tasklet_struct cover_tasklet; + struct work_struct cover_work; struct timer_list cover_timer; unsigned cover_open; @@ -873,18 +874,18 @@ void omap_mmc_notify_cover_event(struct device *dev, int num, int is_closed) sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch"); } - tasklet_hi_schedule(&slot->cover_tasklet); + queue_work(system_bh_highpri_wq, &slot->cover_work); } static void mmc_omap_cover_timer(struct timer_list *t) { struct mmc_omap_slot *slot = from_timer(slot, t, cover_timer); - tasklet_schedule(&slot->cover_tasklet); + queue_work(system_bh_wq, &slot->cover_work); } -static void mmc_omap_cover_handler(struct tasklet_struct *t) +static void mmc_omap_cover_handler(struct work_struct *t) { - struct mmc_omap_slot *slot = from_tasklet(slot, t, cover_tasklet); + struct mmc_omap_slot *slot = from_work(slot, t, cover_work); int cover_open = mmc_omap_cover_is_open(slot); mmc_detect_change(slot->mmc, 0); @@ -1299,7 +1300,7 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id) if (slot->pdata->get_cover_state != NULL) { timer_setup(&slot->cover_timer, mmc_omap_cover_timer, 0); - tasklet_setup(&slot->cover_tasklet, mmc_omap_cover_handler); + INIT_WORK(&slot->cover_work, mmc_omap_cover_handler); } r = mmc_add_host(mmc); @@ -1318,7 +1319,7 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id) &dev_attr_cover_switch); if (r < 0) goto err_remove_slot_name; - tasklet_schedule(&slot->cover_tasklet); + queue_work(system_bh_wq, &slot->cover_work); } return 0; @@ -1341,7 +1342,7 @@ static void mmc_omap_remove_slot(struct mmc_omap_slot *slot) if (slot->pdata->get_cover_state != NULL) device_remove_file(&mmc->class_dev, &dev_attr_cover_switch); - tasklet_kill(&slot->cover_tasklet); + cancel_work_sync(&slot->cover_work); del_timer_sync(&slot->cover_timer); flush_workqueue(slot->host->mmc_omap_wq); diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h index 586f94d4dbfd..4fd2bfcacd76 100644 --- a/drivers/mmc/host/renesas_sdhi.h +++ b/drivers/mmc/host/renesas_sdhi.h @@ -11,6 +11,7 @@ #include #include +#include #include "tmio_mmc.h" struct renesas_sdhi_scc { @@ -67,7 +68,7 @@ struct renesas_sdhi_dma { dma_filter_fn filter; void (*enable)(struct tmio_mmc_host *host, bool enable); struct completion dma_dataend; - struct tasklet_struct dma_complete; + struct work_struct dma_complete; }; struct renesas_sdhi { diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index 53d34c3eddce..f175f8898516 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -336,7 +336,7 @@ static bool renesas_sdhi_internal_dmac_dma_irq(struct tmio_mmc_host *host) writel(status ^ dma_irqs, host->ctl + DM_CM_INFO1); set_bit(SDHI_DMA_END_FLAG_DMA, &dma_priv->end_flags); if (test_bit(SDHI_DMA_END_FLAG_ACCESS, &dma_priv->end_flags)) - tasklet_schedule(&dma_priv->dma_complete); + queue_work(system_bh_wq, &dma_priv->dma_complete); } return status & dma_irqs; @@ -351,7 +351,7 @@ renesas_sdhi_internal_dmac_dataend_dma(struct tmio_mmc_host *host) set_bit(SDHI_DMA_END_FLAG_ACCESS, &dma_priv->end_flags); if (test_bit(SDHI_DMA_END_FLAG_DMA, &dma_priv->end_flags) || host->data->error) - tasklet_schedule(&dma_priv->dma_complete); + queue_work(system_bh_wq, &dma_priv->dma_complete); } /* @@ -439,9 +439,9 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host, renesas_sdhi_internal_dmac_enable_dma(host, false); } -static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg) +static void renesas_sdhi_internal_dmac_issue_work_fn(struct work_struct *t) { - struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg; + struct tmio_mmc_host *host = from_work(host, t, dma_issue); struct renesas_sdhi *priv = host_to_priv(host); tmio_mmc_enable_mmc_irqs(host, TMIO_STAT_DATAEND); @@ -453,7 +453,7 @@ static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg) /* on CMD errors, simulate DMA end immediately */ set_bit(SDHI_DMA_END_FLAG_DMA, &priv->dma_priv.end_flags); if (test_bit(SDHI_DMA_END_FLAG_ACCESS, &priv->dma_priv.end_flags)) - tasklet_schedule(&priv->dma_priv.dma_complete); + queue_work(system_bh_wq, &priv->dma_priv.dma_complete); } } @@ -483,9 +483,9 @@ static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host) return true; } -static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg) +static void renesas_sdhi_internal_dmac_complete_work_fn(struct work_struct *t) { - struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg; + struct tmio_mmc_host *host = from_work(host, t, dam_complete); spin_lock_irq(&host->lock); if (!renesas_sdhi_internal_dmac_complete(host)) @@ -543,12 +543,10 @@ renesas_sdhi_internal_dmac_request_dma(struct tmio_mmc_host *host, /* Each value is set to non-zero to assume "enabling" each DMA */ host->chan_rx = host->chan_tx = (void *)0xdeadbeaf; - tasklet_init(&priv->dma_priv.dma_complete, - renesas_sdhi_internal_dmac_complete_tasklet_fn, - (unsigned long)host); - tasklet_init(&host->dma_issue, - renesas_sdhi_internal_dmac_issue_tasklet_fn, - (unsigned long)host); + INIT_WORK(&priv->dma_priv.dma_complete, + renesas_sdhi_internal_dmac_complete_work_fn); + INIT_WORK(&host->dma_issue, + renesas_sdhi_internal_dmac_issue_work_fn); /* Add pre_req and post_req */ host->ops.pre_req = renesas_sdhi_internal_dmac_pre_req; diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c index 9cf7f9feab72..793595ad6d02 100644 --- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c @@ -312,9 +312,9 @@ static void renesas_sdhi_sys_dmac_start_dma(struct tmio_mmc_host *host, } } -static void renesas_sdhi_sys_dmac_issue_tasklet_fn(unsigned long priv) +static void renesas_sdhi_sys_dmac_issue_work_fn(struct work_struct *t) { - struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv; + struct tmio_mmc_host *host = from_work(host, t, dma_issue); struct dma_chan *chan = NULL; spin_lock_irq(&host->lock); @@ -401,9 +401,8 @@ static void renesas_sdhi_sys_dmac_request_dma(struct tmio_mmc_host *host, goto ebouncebuf; init_completion(&priv->dma_priv.dma_dataend); - tasklet_init(&host->dma_issue, - renesas_sdhi_sys_dmac_issue_tasklet_fn, - (unsigned long)host); + INIT_WORK(&host->dma_issue, + renesas_sdhi_sys_dmac_issue_work_fn); } renesas_sdhi_sys_dmac_enable_dma(host, true); diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c index cb9152c6a65d..974f205d479b 100644 --- a/drivers/mmc/host/sdhci-bcm-kona.c +++ b/drivers/mmc/host/sdhci-bcm-kona.c @@ -107,7 +107,7 @@ static void sdhci_bcm_kona_sd_init(struct sdhci_host *host) * Software emulation of the SD card insertion/removal. Set insert=1 for insert * and insert=0 for removal. The card detection is done by GPIO. For Broadcom * IP to function properly the bit 0 of CORESTAT register needs to be set/reset - * to generate the CD IRQ handled in sdhci.c which schedules card_tasklet. + * to generate the CD IRQ handled in sdhci.c which schedules card_work. */ static int sdhci_bcm_kona_sd_card_emulate(struct sdhci_host *host, int insert) { diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c index b5a2f2f25ad9..c6285c577db0 100644 --- a/drivers/mmc/host/tifm_sd.c +++ b/drivers/mmc/host/tifm_sd.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #define DRIVER_NAME "tifm_sd" @@ -97,7 +98,7 @@ struct tifm_sd { unsigned int clk_div; unsigned long timeout_jiffies; - struct tasklet_struct finish_tasklet; + struct work_struct finish_work; struct timer_list timer; struct mmc_request *req; @@ -463,7 +464,7 @@ static void tifm_sd_check_status(struct tifm_sd *host) } } finish_request: - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } /* Called from interrupt handler */ @@ -723,9 +724,9 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq) mmc_request_done(mmc, mrq); } -static void tifm_sd_end_cmd(struct tasklet_struct *t) +static void tifm_sd_end_cmd(struct work_struct *t) { - struct tifm_sd *host = from_tasklet(host, t, finish_tasklet); + struct tifm_sd *host = from_work(host, t, finish_work); struct tifm_dev *sock = host->dev; struct mmc_host *mmc = tifm_get_drvdata(sock); struct mmc_request *mrq; @@ -960,7 +961,7 @@ static int tifm_sd_probe(struct tifm_dev *sock) */ mmc->max_busy_timeout = TIFM_MMCSD_REQ_TIMEOUT_MS; - tasklet_setup(&host->finish_tasklet, tifm_sd_end_cmd); + INIT_WORK(&host->finish_work, tifm_sd_end_cmd); timer_setup(&host->timer, tifm_sd_abort, 0); mmc->ops = &tifm_sd_ops; @@ -999,7 +1000,7 @@ static void tifm_sd_remove(struct tifm_dev *sock) writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); spin_unlock_irqrestore(&sock->lock, flags); - tasklet_kill(&host->finish_tasklet); + cancel_work_sync(&host->finish_work); spin_lock_irqsave(&sock->lock, flags); if (host->req) { @@ -1009,7 +1010,7 @@ static void tifm_sd_remove(struct tifm_dev *sock) host->req->cmd->error = -ENOMEDIUM; if (host->req->stop) host->req->stop->error = -ENOMEDIUM; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } spin_unlock_irqrestore(&sock->lock, flags); mmc_remove_host(mmc); diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index de56e6534aea..bee13acaa80f 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -21,6 +21,7 @@ #include #include #include +#include #define CTL_SD_CMD 0x00 #define CTL_ARG_REG 0x04 @@ -156,7 +157,7 @@ struct tmio_mmc_host { bool dma_on; struct dma_chan *chan_rx; struct dma_chan *chan_tx; - struct tasklet_struct dma_issue; + struct work_struct dma_issue; struct scatterlist bounce_sg; u8 *bounce_buf; diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 93e912afd3ae..51bd2365795b 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -608,7 +608,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host, unsigned int stat) } else { tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_READOP); - tasklet_schedule(&host->dma_issue); + queue_work(system_bh_wq, &host->dma_issue); } } else { if (!host->dma_on) { @@ -616,7 +616,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host, unsigned int stat) } else { tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_WRITEOP); - tasklet_schedule(&host->dma_issue); + queue_work(system_bh_wq, &host->dma_issue); } } } else { diff --git a/drivers/mmc/host/uniphier-sd.c b/drivers/mmc/host/uniphier-sd.c index 1404989e6151..d1964111c393 100644 --- a/drivers/mmc/host/uniphier-sd.c +++ b/drivers/mmc/host/uniphier-sd.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "tmio_mmc.h" @@ -90,9 +91,9 @@ static void uniphier_sd_dma_endisable(struct tmio_mmc_host *host, int enable) } /* external DMA engine */ -static void uniphier_sd_external_dma_issue(struct tasklet_struct *t) +static void uniphier_sd_external_dma_issue(struct work_struct *t) { - struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue); + struct tmio_mmc_host *host = from_work(host, t, dma_issue); struct uniphier_sd_priv *priv = uniphier_sd_priv(host); uniphier_sd_dma_endisable(host, 1); @@ -199,7 +200,7 @@ static void uniphier_sd_external_dma_request(struct tmio_mmc_host *host, host->chan_rx = chan; host->chan_tx = chan; - tasklet_setup(&host->dma_issue, uniphier_sd_external_dma_issue); + INIT_WORK(&host->dma_issue, uniphier_sd_external_dma_issue); } static void uniphier_sd_external_dma_release(struct tmio_mmc_host *host) @@ -236,9 +237,9 @@ static const struct tmio_mmc_dma_ops uniphier_sd_external_dma_ops = { .dataend = uniphier_sd_external_dma_dataend, }; -static void uniphier_sd_internal_dma_issue(struct tasklet_struct *t) +static void uniphier_sd_internal_dma_issue(struct work_struct *t) { - struct tmio_mmc_host *host = from_tasklet(host, t, dma_issue); + struct tmio_mmc_host *host = from_work(host, t, dma_issue); unsigned long flags; spin_lock_irqsave(&host->lock, flags); @@ -317,7 +318,7 @@ static void uniphier_sd_internal_dma_request(struct tmio_mmc_host *host, host->chan_tx = (void *)0xdeadbeaf; - tasklet_setup(&host->dma_issue, uniphier_sd_internal_dma_issue); + INIT_WORK(&host->dma_issue, uniphier_sd_internal_dma_issue); } static void uniphier_sd_internal_dma_release(struct tmio_mmc_host *host) diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c index ba6044b16e07..2777b773086b 100644 --- a/drivers/mmc/host/via-sdmmc.c +++ b/drivers/mmc/host/via-sdmmc.c @@ -12,6 +12,7 @@ #include #include +#include #define DRV_NAME "via_sdmmc" @@ -307,7 +308,7 @@ struct via_crdr_mmc_host { struct sdhcreg pm_sdhc_reg; struct work_struct carddet_work; - struct tasklet_struct finish_tasklet; + struct work_struct finish_work; struct timer_list timer; spinlock_t lock; @@ -643,7 +644,7 @@ static void via_sdc_finish_data(struct via_crdr_mmc_host *host) if (data->stop) via_sdc_send_command(host, data->stop); else - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } static void via_sdc_finish_command(struct via_crdr_mmc_host *host) @@ -653,7 +654,7 @@ static void via_sdc_finish_command(struct via_crdr_mmc_host *host) host->cmd->error = 0; if (!host->cmd->data) - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); host->cmd = NULL; } @@ -682,7 +683,7 @@ static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq) status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) { host->mrq->cmd->error = -ENOMEDIUM; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } else { via_sdc_send_command(host, mrq->cmd); } @@ -848,7 +849,7 @@ static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask) host->cmd->error = -EILSEQ; if (host->cmd->error) - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); else if (intmask & VIA_CRDR_SDSTS_CRD) via_sdc_finish_command(host); } @@ -955,16 +956,16 @@ static void via_sdc_timeout(struct timer_list *t) sdhost->cmd->error = -ETIMEDOUT; else sdhost->mrq->cmd->error = -ETIMEDOUT; - tasklet_schedule(&sdhost->finish_tasklet); + queue_work(system_bh_wq, &sdhost->finish_work); } } spin_unlock_irqrestore(&sdhost->lock, flags); } -static void via_sdc_tasklet_finish(struct tasklet_struct *t) +static void via_sdc_work_finish(struct work_struct *t) { - struct via_crdr_mmc_host *host = from_tasklet(host, t, finish_tasklet); + struct via_crdr_mmc_host *host = from_work(host, t, finish_work); unsigned long flags; struct mmc_request *mrq; @@ -1005,7 +1006,7 @@ static void via_sdc_card_detect(struct work_struct *work) pr_err("%s: Card removed during transfer!\n", mmc_hostname(host->mmc)); host->mrq->cmd->error = -ENOMEDIUM; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } spin_unlock_irqrestore(&host->lock, flags); @@ -1051,7 +1052,7 @@ static void via_init_mmc_host(struct via_crdr_mmc_host *host) INIT_WORK(&host->carddet_work, via_sdc_card_detect); - tasklet_setup(&host->finish_tasklet, via_sdc_tasklet_finish); + INIT_WORK(&host->finish_work, via_sdc_work_finish); addrbase = host->sdhc_mmiobase; writel(0x0, addrbase + VIA_CRDR_SDINTMASK); @@ -1193,7 +1194,7 @@ static void via_sd_remove(struct pci_dev *pcidev) sdhost->mrq->cmd->error = -ENOMEDIUM; if (sdhost->mrq->stop) sdhost->mrq->stop->error = -ENOMEDIUM; - tasklet_schedule(&sdhost->finish_tasklet); + queue_work(system_bh_wq, &sdhost->finish_work); } spin_unlock_irqrestore(&sdhost->lock, flags); @@ -1203,7 +1204,7 @@ static void via_sd_remove(struct pci_dev *pcidev) del_timer_sync(&sdhost->timer); - tasklet_kill(&sdhost->finish_tasklet); + cancel_work_sync(&sdhost->finish_work); /* switch off power */ gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c index f0562f712d98..984e380abc71 100644 --- a/drivers/mmc/host/wbsd.c +++ b/drivers/mmc/host/wbsd.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include @@ -459,7 +460,7 @@ static void wbsd_empty_fifo(struct wbsd_host *host) * FIFO threshold interrupts properly. */ if ((data->blocks * data->blksz - data->bytes_xfered) < 16) - tasklet_schedule(&host->fifo_tasklet); + queue_work(system_bh_wq, &host->fifo_work); } static void wbsd_fill_fifo(struct wbsd_host *host) @@ -524,7 +525,7 @@ static void wbsd_fill_fifo(struct wbsd_host *host) * 'FIFO empty' under certain conditions. So we * need to be a bit more pro-active. */ - tasklet_schedule(&host->fifo_tasklet); + queue_work(system_bh_wq, &host->fifo_work); } static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data) @@ -746,7 +747,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) struct mmc_command *cmd; /* - * Disable tasklets to avoid a deadlock. + * Disable works to avoid a deadlock. */ spin_lock_bh(&host->lock); @@ -821,7 +822,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) * Dirty fix for hardware bug. */ if (host->dma == -1) - tasklet_schedule(&host->fifo_tasklet); + queue_work(system_bh_wq, &host->fifo_work); spin_unlock_bh(&host->lock); @@ -961,13 +962,13 @@ static void wbsd_reset_ignore(struct timer_list *t) * Card status might have changed during the * blackout. */ - tasklet_schedule(&host->card_tasklet); + queue_work(system_bh_wq, &host->card_work); spin_unlock_bh(&host->lock); } /* - * Tasklets + * Works */ static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host) @@ -987,9 +988,9 @@ static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host) return host->mrq->cmd->data; } -static void wbsd_tasklet_card(struct tasklet_struct *t) +static void wbsd_work_card(struct work_struct *t) { - struct wbsd_host *host = from_tasklet(host, t, card_tasklet); + struct wbsd_host *host = from_work(host, t, card_work); u8 csr; int delay = -1; @@ -1020,7 +1021,7 @@ static void wbsd_tasklet_card(struct tasklet_struct *t) wbsd_reset(host); host->mrq->cmd->error = -ENOMEDIUM; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } delay = 0; @@ -1036,9 +1037,9 @@ static void wbsd_tasklet_card(struct tasklet_struct *t) mmc_detect_change(host->mmc, msecs_to_jiffies(delay)); } -static void wbsd_tasklet_fifo(struct tasklet_struct *t) +static void wbsd_work_fifo(struct work_struct *t) { - struct wbsd_host *host = from_tasklet(host, t, fifo_tasklet); + struct wbsd_host *host = from_work(host, t, fifo_work); struct mmc_data *data; spin_lock(&host->lock); @@ -1060,16 +1061,16 @@ static void wbsd_tasklet_fifo(struct tasklet_struct *t) */ if (host->num_sg == 0) { wbsd_write_index(host, WBSD_IDX_FIFOEN, 0); - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); } end: spin_unlock(&host->lock); } -static void wbsd_tasklet_crc(struct tasklet_struct *t) +static void wbsd_work_crc(struct work_struct *t) { - struct wbsd_host *host = from_tasklet(host, t, crc_tasklet); + struct wbsd_host *host = from_work(host, t, crc_work); struct mmc_data *data; spin_lock(&host->lock); @@ -1085,15 +1086,15 @@ static void wbsd_tasklet_crc(struct tasklet_struct *t) data->error = -EILSEQ; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); end: spin_unlock(&host->lock); } -static void wbsd_tasklet_timeout(struct tasklet_struct *t) +static void wbsd_work_timeout(struct work_struct *t) { - struct wbsd_host *host = from_tasklet(host, t, timeout_tasklet); + struct wbsd_host *host = from_work(host, t, timeout_work); struct mmc_data *data; spin_lock(&host->lock); @@ -1109,15 +1110,15 @@ static void wbsd_tasklet_timeout(struct tasklet_struct *t) data->error = -ETIMEDOUT; - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); end: spin_unlock(&host->lock); } -static void wbsd_tasklet_finish(struct tasklet_struct *t) +static void wbsd_work_finish(struct work_struct *t) { - struct wbsd_host *host = from_tasklet(host, t, finish_tasklet); + struct wbsd_host *host = from_work(host, t, finish_work); struct mmc_data *data; spin_lock(&host->lock); @@ -1156,18 +1157,18 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id) host->isr |= isr; /* - * Schedule tasklets as needed. + * Schedule works as needed. */ if (isr & WBSD_INT_CARD) - tasklet_schedule(&host->card_tasklet); + queue_work(system_bh_wq, &host->card_work); if (isr & WBSD_INT_FIFO_THRE) - tasklet_schedule(&host->fifo_tasklet); + queue_work(system_bh_wq, &host->fifo_work); if (isr & WBSD_INT_CRC) - tasklet_hi_schedule(&host->crc_tasklet); + queue_work(system_bh_highpri_wq, &host->crc_work); if (isr & WBSD_INT_TIMEOUT) - tasklet_hi_schedule(&host->timeout_tasklet); + queue_work(system_bh_highpri_wq, &host->timeout_work); if (isr & WBSD_INT_TC) - tasklet_schedule(&host->finish_tasklet); + queue_work(system_bh_wq, &host->finish_work); return IRQ_HANDLED; } @@ -1443,13 +1444,13 @@ static int wbsd_request_irq(struct wbsd_host *host, int irq) int ret; /* - * Set up tasklets. Must be done before requesting interrupt. + * Set up works. Must be done before requesting interrupt. */ - tasklet_setup(&host->card_tasklet, wbsd_tasklet_card); - tasklet_setup(&host->fifo_tasklet, wbsd_tasklet_fifo); - tasklet_setup(&host->crc_tasklet, wbsd_tasklet_crc); - tasklet_setup(&host->timeout_tasklet, wbsd_tasklet_timeout); - tasklet_setup(&host->finish_tasklet, wbsd_tasklet_finish); + INIT_WORK(&host->card_work, wbsd_work_card); + INIT_WORK(&host->fifo_work, wbsd_work_fifo); + INIT_WORK(&host->crc_work, wbsd_work_crc); + INIT_WORK(&host->timeout_work, wbsd_work_timeout); + INIT_WORK(&host->finish_work, wbsd_work_finish); /* * Allocate interrupt. @@ -1472,11 +1473,11 @@ static void wbsd_release_irq(struct wbsd_host *host) host->irq = 0; - tasklet_kill(&host->card_tasklet); - tasklet_kill(&host->fifo_tasklet); - tasklet_kill(&host->crc_tasklet); - tasklet_kill(&host->timeout_tasklet); - tasklet_kill(&host->finish_tasklet); + cancel_work_sync(&host->card_work); + cancel_work_sync(&host->fifo_work); + cancel_work_sync(&host->crc_work); + cancel_work_sync(&host->timeout_work); + cancel_work_sync(&host->finish_work); } /* diff --git a/drivers/mmc/host/wbsd.h b/drivers/mmc/host/wbsd.h index be30b4d8ce4c..942a64a724e4 100644 --- a/drivers/mmc/host/wbsd.h +++ b/drivers/mmc/host/wbsd.h @@ -171,11 +171,11 @@ struct wbsd_host int irq; /* Interrupt */ int dma; /* DMA channel */ - struct tasklet_struct card_tasklet; /* Tasklet structures */ - struct tasklet_struct fifo_tasklet; - struct tasklet_struct crc_tasklet; - struct tasklet_struct timeout_tasklet; - struct tasklet_struct finish_tasklet; + struct work_struct card_work; /* Work structures */ + struct work_struct fifo_work; + struct work_struct crc_work; + struct work_struct timeout_work; + struct work_struct finish_work; struct timer_list ignore_timer; /* Ignore detection timer */ };