From patchwork Tue Sep 25 20:53:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 10614825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 457CC16B1 for ; Tue, 25 Sep 2018 20:53:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 37D9E285EF for ; Tue, 25 Sep 2018 20:53:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2B84228662; Tue, 25 Sep 2018 20:53:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E6712285EF for ; Tue, 25 Sep 2018 20:53:03 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id B5BEF211575CF; Tue, 25 Sep 2018 13:53:03 -0700 (PDT) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: None (no SPF record) identity=mailfrom; client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=alexander.h.duyck@linux.intel.com; receiver=linux-nvdimm@lists.01.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 7AEA72114842B for ; Tue, 25 Sep 2018 13:53:02 -0700 (PDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Sep 2018 13:53:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,303,1534834800"; d="scan'208";a="77236369" Received: from ahduyck-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.7.198.152]) by orsmga006.jf.intel.com with ESMTP; 25 Sep 2018 13:53:02 -0700 Subject: [PATCH 1/2] nvdimm: Hold reference on parent while scheduling async init From: Alexander Duyck To: linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org Date: Tue, 25 Sep 2018 13:53:02 -0700 Message-ID: <20180925205301.6182.58728.stgit@localhost.localdomain> In-Reply-To: <20180925204801.6182.73167.stgit@localhost.localdomain> References: <20180925204801.6182.73167.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zwisler@kernel.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP Unlike asynchronous initialization in the core we have not yet associated the device with the parent, and as such the device doesn't hold a reference to the parent. In order to resolve that we should be holding a reference on the parent until the asynchronous initialization has completed. Signed-off-by: Alexander Duyck --- drivers/nvdimm/bus.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 8aae6dcc839f..9148015ed803 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -488,6 +488,8 @@ static void nd_async_device_register(void *d, async_cookie_t cookie) put_device(dev); } put_device(dev); + if (dev->parent) + put_device(dev->parent); } static void nd_async_device_unregister(void *d, async_cookie_t cookie) @@ -507,6 +509,8 @@ void __nd_device_register(struct device *dev) if (!dev) return; dev->bus = &nvdimm_bus_type; + if (dev->parent) + get_device(dev->parent); get_device(dev); async_schedule_domain(nd_async_device_register, dev, &nd_async_domain); From patchwork Tue Sep 25 20:53:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 10614827 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F901161F for ; Tue, 25 Sep 2018 20:53:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 120D72864F for ; Tue, 25 Sep 2018 20:53:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 04EAA286B6; Tue, 25 Sep 2018 20:53:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DC4EC286AA for ; Tue, 25 Sep 2018 20:53:10 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id D226D211575CE; Tue, 25 Sep 2018 13:53:10 -0700 (PDT) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: None (no SPF record) identity=mailfrom; client-ip=192.55.52.43; helo=mga05.intel.com; envelope-from=alexander.h.duyck@linux.intel.com; receiver=linux-nvdimm@lists.01.org Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 714372114842B for ; Tue, 25 Sep 2018 13:53:09 -0700 (PDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Sep 2018 13:53:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,303,1534834800"; d="scan'208";a="77236383" Received: from ahduyck-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.7.198.152]) by orsmga006.jf.intel.com with ESMTP; 25 Sep 2018 13:53:07 -0700 Subject: [PATCH 2/2] nvdimm: Set device node in nd_device_register From: Alexander Duyck To: linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org Date: Tue, 25 Sep 2018 13:53:07 -0700 Message-ID: <20180925205307.6182.26453.stgit@localhost.localdomain> In-Reply-To: <20180925204801.6182.73167.stgit@localhost.localdomain> References: <20180925204801.6182.73167.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zwisler@kernel.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP This change makes it so that we don't repeatedly overwrite the device node for nvdimm regions. The earliest we can set the node is immediately after calling device init, so I have moved the code there so we can avoid rewriting the node with each uevent. Signed-off-by: Alexander Duyck --- drivers/nvdimm/bus.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 9148015ed803..96f4d0e1706a 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -54,12 +54,6 @@ static int to_nd_device_type(struct device *dev) static int nvdimm_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { - /* - * Ensure that region devices always have their numa node set as - * early as possible. - */ - if (is_nd_region(dev)) - set_dev_node(dev, to_nd_region(dev)->numa_node); return add_uevent_var(env, "MODALIAS=" ND_DEVICE_MODALIAS_FMT, to_nd_device_type(dev)); } @@ -519,6 +513,16 @@ void __nd_device_register(struct device *dev) void nd_device_register(struct device *dev) { device_initialize(dev); + + /* + * Ensure that region devices always have their NUMA node set as + * early as possible. This way we are able to make certain that any + * memory associated with the creation and the creation itself of + * the region is associated with the correct node. + */ + if (is_nd_region(dev)) + set_dev_node(dev, to_nd_region(dev)->numa_node); + __nd_device_register(dev); } EXPORT_SYMBOL(nd_device_register);