From patchwork Fri Jan 31 10:38:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11359619 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CC20E13A4 for ; Fri, 31 Jan 2020 10:41:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A9CC3206F0 for ; Fri, 31 Jan 2020 10:41:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="u9PoLp0N" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A9CC3206F0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7/gVNpgZObu4enU6NkjjkqjyZOkgH4y/+9VYUd+7uSU=; b=u9PoLp0NRkQsKm igyOTS0pX7b98A7f41xZ83/lX+rpRNloHh7Z5SEWTrjHo+jB8ck9mwPmTTFs6JO6hOn83az1y50Zy KPza0UlSnFZgtiCwFb4mPs0ZdYkutthHhcieupQGkKzlnbLcUlNqjfIM92rwKdCkaFhcyG3n9oIAu GrSXPL9vz3TrTYjd7e9EiqEG0xxc0GhO+jj1HJlRwrI1787cBvi2Gvo/Rn0WsDSLTsRYz9XPzQeTk c2ZmMSxR7c0TBEOu/2tiMr/GeqSEXWb4ooaV7aqz/N6iFcG60GpQ3HeCFOo1DmAa/7pWcyUFAkOIB td15tzI+rY7tV8QCN27Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ixTji-0006KE-KM; Fri, 31 Jan 2020 10:41:18 +0000 Received: from mx2.suse.de ([195.135.220.15]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ixThe-0003VO-Fv; Fri, 31 Jan 2020 10:39:12 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E5F77B004; Fri, 31 Jan 2020 10:39:08 +0000 (UTC) From: Nicolas Saenz Julienne To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 06/21] staging: vc04_services: get rid of vchiq_platform_use_suspend_timer() Date: Fri, 31 Jan 2020 11:38:22 +0100 Message-Id: <20200131103836.14312-7-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200131103836.14312-1-nsaenzjulienne@suse.de> References: <20200131103836.14312-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200131_023910_844957_8282ADA1 X-CRM114-Status: GOOD ( 15.11 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [195.135.220.15 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [195.135.220.15 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Nicolas Saenz Julienne Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The function always returns 0, delete the function and all code conditional to it, namely the suspend timer. Signed-off-by: Nicolas Saenz Julienne --- Changes since v1: - Don't delete vchiq_dump_service_use_state() .../interface/vchiq_arm/vchiq_2835_arm.c | 11 --- .../interface/vchiq_arm/vchiq_arm.c | 83 ++----------------- .../interface/vchiq_arm/vchiq_arm.h | 9 -- 3 files changed, 5 insertions(+), 98 deletions(-) diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c index ca30bfd52919..1ffb2aea947c 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c @@ -284,17 +284,6 @@ vchiq_platform_videocore_wanted(struct vchiq_state *state) { return 1; // autosuspend not supported - videocore always wanted } - -int -vchiq_platform_use_suspend_timer(void) -{ - return 0; -} -void -vchiq_dump_platform_use_state(struct vchiq_state *state) -{ - vchiq_log_info(vchiq_arm_log_level, "Suspend timer not in use"); -} void vchiq_platform_handle_timeout(struct vchiq_state *state) { diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c index 4545df573c90..2dfa5793d83b 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c @@ -48,9 +48,6 @@ int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT; int vchiq_susp_log_level = VCHIQ_LOG_ERROR; -#define SUSPEND_TIMER_TIMEOUT_MS 100 -#define SUSPEND_RETRY_TIMER_TIMEOUT_MS 1000 - #define VC_SUSPEND_NUM_OFFSET 3 /* number of values before idle which are -ve */ static const char *const suspend_state_names[] = { "VC_SUSPEND_FORCE_CANCELED", @@ -79,8 +76,6 @@ static const char *const resume_state_names[] = { * requested */ #define FORCE_SUSPEND_TIMEOUT_MS 200 -static void suspend_timer_callback(struct timer_list *t); - struct user_service { struct vchiq_service *service; void *userdata; @@ -2384,12 +2379,7 @@ vchiq_arm_init_state(struct vchiq_state *state, * completion while videocore is suspended. */ set_resume_state(arm_state, VC_RESUME_RESUMED); - arm_state->suspend_timer_timeout = SUSPEND_TIMER_TIMEOUT_MS; - arm_state->suspend_timer_running = 0; arm_state->state = state; - timer_setup(&arm_state->suspend_timer, suspend_timer_callback, - 0); - arm_state->first_connect = 0; } @@ -2517,27 +2507,6 @@ set_resume_state(struct vchiq_arm_state *arm_state, } } -/* should be called with the write lock held */ -inline void -start_suspend_timer(struct vchiq_arm_state *arm_state) -{ - del_timer(&arm_state->suspend_timer); - arm_state->suspend_timer.expires = jiffies + - msecs_to_jiffies(arm_state->suspend_timer_timeout); - add_timer(&arm_state->suspend_timer); - arm_state->suspend_timer_running = 1; -} - -/* should be called with the write lock held */ -static inline void -stop_suspend_timer(struct vchiq_arm_state *arm_state) -{ - if (arm_state->suspend_timer_running) { - del_timer(&arm_state->suspend_timer); - arm_state->suspend_timer_running = 0; - } -} - static inline int need_resume(struct vchiq_state *state) { @@ -2626,28 +2595,6 @@ vchiq_platform_check_suspend(struct vchiq_state *state) return; } -void -vchiq_check_suspend(struct vchiq_state *state) -{ - struct vchiq_arm_state *arm_state = vchiq_platform_get_arm_state(state); - - if (!arm_state) - goto out; - - vchiq_log_trace(vchiq_susp_log_level, "%s", __func__); - - write_lock_bh(&arm_state->susp_res_lock); - if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED && - arm_state->first_connect && - !vchiq_videocore_wanted(state)) { - vchiq_arm_vcsuspend(state); - } - write_unlock_bh(&arm_state->susp_res_lock); - -out: - vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__); -} - /* This function should be called with the write lock held */ int vchiq_check_resume(struct vchiq_state *state) @@ -2702,9 +2649,6 @@ vchiq_use_internal(struct vchiq_state *state, struct vchiq_service *service, } write_lock_bh(&arm_state->susp_res_lock); - - stop_suspend_timer(arm_state); - local_uc = ++arm_state->videocore_use_count; local_entity_uc = ++(*entity_uc); @@ -2799,15 +2743,11 @@ vchiq_release_internal(struct vchiq_state *state, struct vchiq_service *service) --(*entity_uc); if (!vchiq_videocore_wanted(state)) { - if (vchiq_platform_use_suspend_timer()) { - start_suspend_timer(arm_state); - } else { - vchiq_log_info(vchiq_susp_log_level, - "%s %s count %d, state count %d - suspending", - __func__, entity, *entity_uc, - arm_state->videocore_use_count); - vchiq_arm_vcsuspend(state); - } + vchiq_log_info(vchiq_susp_log_level, + "%s %s count %d, state count %d - suspending", + __func__, entity, *entity_uc, + arm_state->videocore_use_count); + vchiq_arm_vcsuspend(state); } else vchiq_log_trace(vchiq_susp_log_level, "%s %s count %d, state count %d", @@ -2902,17 +2842,6 @@ vchiq_instance_set_trace(struct vchiq_instance *instance, int trace) instance->trace = (trace != 0); } -static void suspend_timer_callback(struct timer_list *t) -{ - struct vchiq_arm_state *arm_state = - from_timer(arm_state, t, suspend_timer); - struct vchiq_state *state = arm_state->state; - - vchiq_log_info(vchiq_susp_log_level, - "%s - suspend timer expired - check suspend", __func__); - vchiq_check_suspend(state); -} - enum vchiq_status vchiq_use_service(unsigned int handle) { @@ -3028,8 +2957,6 @@ vchiq_dump_service_use_state(struct vchiq_state *state) "--- Overall vchiq instance use count %d", vc_use_count); kfree(service_data); - - vchiq_dump_platform_use_state(state); } enum vchiq_status diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h index 35889a65b17f..61c50d7d4396 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h @@ -54,9 +54,6 @@ struct vchiq_arm_state { enum vc_resume_status vc_resume_state; struct vchiq_state *state; - struct timer_list suspend_timer; - int suspend_timer_timeout; - int suspend_timer_running; /* Global use count for videocore. ** This is equal to the sum of the use counts for all services. When @@ -121,9 +118,6 @@ vchiq_platform_suspend(struct vchiq_state *state); extern int vchiq_platform_videocore_wanted(struct vchiq_state *state); -extern int -vchiq_platform_use_suspend_timer(void); - extern void vchiq_dump_platform_use_state(struct vchiq_state *state); @@ -166,7 +160,4 @@ extern void set_resume_state(struct vchiq_arm_state *arm_state, enum vc_resume_status new_state); -extern void -start_suspend_timer(struct vchiq_arm_state *arm_state); - #endif /* VCHIQ_ARM_H */