From nobody Mon Feb 9 13:57:46 2026 Received: from invmail4.hynix.com (exvmail4.hynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B48CA24728A; Tue, 13 May 2025 10:07:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130873; cv=none; b=cTBNgD9xKaXYBkIPaeHKutf0bHHn7rLebH9EY/Aq8nrYf/xZyyJdR9QCBF+WBRf9NDXEpGGu5atkXg1xWC5etyVTfNIXG5BpLyHp2mj7Z0n8LD4ES+RsBuPySB0FZTEDlvE4xt9JhUBsPounXwI1bcft3Xz47qMEXrSyqJcw7Vc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130873; c=relaxed/simple; bh=KlggbR8P/n36oRZlJZsBth/VG91g9Dz5bdB/P0jqAy0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=bjDvnLVSqvysT3sRoxA1+MY0Hz3ZhtT+F4NXP61WrsntuQxoqUht6kNpVFmgJV3lLyxSU5wnPYNIhzgiRxGfb4x2QQVd8DWOzapabh4YzA7qaF9btqhb6h5i7BYuLBX5NE9sguDtI3tieM/Kq2ZLpUpsZ7To+1T0WjCBpPDBaUY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-669ff7000002311f-5b-682319ee0be8 From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: kernel_team@skhynix.com, torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, harry.yoo@oracle.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, yskelg@gmail.com, yunseong.kim@ericsson.com, yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com Subject: [PATCH v15 10/43] dept: distinguish each work from another Date: Tue, 13 May 2025 19:06:57 +0900 Message-Id: <20250513100730.12664-11-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250513100730.12664-1-byungchul@sk.com> References: <20250513100730.12664-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0xTdxjG9z/n9H8Olc6TejvWTbFIjExQprLXxJFFP/jng4nGgIox2MjZ WrlaoMimC53FOBwNYhDBC+WSUqEKFo3gwDHACqiIglAN4sDFrOGmnW1A8NJi/PLml+d53+f5 8nK03C5RcJqkNFGbpEpQYikjHfMvDZlYHKheO2nE4H5zgoHzNVYM3VeqEViv6Slw3t4K/Z5R BNP3H9BQWNCNoHToGQ3X7IMImiy/Yej590vodU9g6Cg4ieFYeQ2GhyMzFAycyaeg2rYNnptf MnA3r4yCQieGc4XHKO/4j4IpcxUL5qwgGLYUszAzFAYdg30SaHr6DRRdHMDQ2NTBgL1+mIKe m+cxDFo/SOCuvZ0Bj3EJdJ/KlcDl8TIMIx4zDWb3BAuPmk0U2E0LodbgDTz+/3sJ3MltpuB4 xVUKep/8ieDWiX8osFn7MLS6RymosxXQ8LbyNoJh4xgL2X9MsXBOb0RwMvsMA4aBDTA96W2+ 8CYM9CW1DFx+14d++J5YL1oRaR2doImhLoO8dT/GpMljYkhnmUAaip+xxHDrKUtMtnRSZwkm 5Y1OipS63BJiq/odE5srnyU5Y70UGe/qYrd/FSPdFCcmaHSidk3Efqm6NluXMs4ermh5RWWh RpyD/DiBXy8M1/TTOYib5Uud6T4Z8ysFh2OK9vF8PkCoy30pyUFSjub75gj9F54gnzGP3yIY W7MYHzN8kHDvZsksy/hwwZHfS3/KXyZU1zbPsp9Xf1fZNbsj5zcIeaZqxhcq8Kf9BL1hnPl0 sFj42+Jg8pDMhL6oQnJNki5RpUlYH6rOTNIcDj2QnGhD3u8yH53ZW49c3TtbEM8hpb+s3blc LZeodKmZiS1I4GjlfJn+hleSxakyfxa1ybHa9AQxtQUt4RjlItm3now4Of+TKk2MF8UUUfvZ pTg/RRbSrUxb8MKFi2JTmPplI/bvkn85FGCJj/1V8XBV1KXl6q8PrtvXVkGmw44qUGjDgbP0 5rYdR2RzN/V01qwIWR2c4hh67oxeuita2YYiwq83GKObY6I2NkRGf3i9elK7W9FunRMU9JdF meEfGFPiKS7fG7H7CBe4JzfSODX0Y7i65FCokklVq8KCaW2q6iN1Dzi1WQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAAzWSfSzUcRzH+/6eXV37Tapfer7Qes6W+mxatfrDb22sh5Wtf3Lxq7t5qN2h znoglIjQEFJHdeROOJQ8lLl1dSkUnYdQzMQ8tbiLiI6tfz577f3+vD/vfz4Mbp9HOjLyoGBB ESQNkFAiQuTlHrltZMUG2c4fY5vAMh5DwP1CHQWNz7QIdKURGAy88YAW6xCCqY8NOKSlNCLI 7u7EodTYhaA67zoFTb2LodkySoEpJY6CyEeFFHwanMagIzUZA63eE75p+gioS8zBIG2Agsy0 SMw2+jGY1OTToAl3hp68DBqmu13B1GUmwZBlIqG6fQukP+igoKraRICxvAeDpor7FHTpZkmo M74jwJqwEhqT4kkoGMmhYNCqwUFjGaXhc40aA6N6GRRF2a7eGJsh4W18DQY3Hhdj0NxWieBV zHcM9DozBQbLEAYl+hQc/uS+QdCTMExD9O1JGjIjEhDERacSENXhBlMTtuascVeIeFhEQMFf Mzqwj9c90CHeMDSK81ElF/k/li8UX21VE/z7HI5/mdFJ81Gv2mlerQ/hS/I284+qBjA++5eF 5PX5tyhe/yuZ5mOHmzF+pL6ePrL6lGivnxAgDxUUO/b5iGRF0aEXRuhLj2t/YuGoiopFDMOx u7in70NikR1DsRu51tZJfI4d2HVcSXwfGYtEDM6aF3ItWW1ozljCHuISDOHEHBOsM/eh4uE8 i9ndXGty83yYY9dy2qKaebaz6X9z6+d37Fk3LlGtJRKRSI0W5CMHeVBooFQe4LZd6S9TBckv bfc9H6hHtv/RXJlOKkfjTR61iGWQZJH43cB6mT0pDVWqAmsRx+ASB3HEC5sk9pOqwgTF+dOK kABBWYtWMoRkufiwt+Bjz56TBgv+gnBBUPx3McbOMRwVutet0p1Msha7HDte37ZfhaeW3Szr 9bzp4uTsEtcNCi+t/5rfo7Izn9OHm5K82cvs0rRpS9escSJr/9djpYwiX/W6d6Kh5vnEjNDe 8Lpgx70M87P+03uuMqb4mF2EqMf3YOW2UieHO0enrj2p6zfc3brQaWvu2RPnGrON7clhWm8J oZRJXTfjCqX0H7RVwqA7AwAA X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Workqueue already provides concurrency control. By that, any wait in a work doesn't prevents events in other works with the control enabled. Thus, each work would better be considered a different context. So let dept assign a different context id to each work. Signed-off-by: Byungchul Park --- kernel/workqueue.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index cf6203282737..5a6ab354c416 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -55,6 +55,7 @@ #include #include #include +#include =20 #include "workqueue_internal.h" =20 @@ -3155,6 +3156,8 @@ __acquires(&pool->lock) =20 lockdep_copy_map(&lockdep_map, &work->lockdep_map); #endif + dept_update_cxt(); + /* ensure we're on the correct CPU */ WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) && raw_smp_processor_id() !=3D pool->cpu); --=20 2.17.1