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okorniev@redhat.com, Dai.Ngo@oracle.com, tom@talpey.com, trondmy@kernel.org, anna@kernel.org, kees@kernel.org, bigeasy@linutronix.de, clrkwllms@kernel.org, mark.rutland@arm.com, ada.coupriediaz@arm.com, kristina.martsenko@arm.com, wangkefeng.wang@huawei.com, broonie@kernel.org, kevin.brodsky@arm.com, dwmw@amazon.co.uk, shakeel.butt@linux.dev, ast@kernel.org, ziy@nvidia.com, yuzhao@google.com, baolin.wang@linux.alibaba.com, usamaarif642@gmail.com, joel.granados@kernel.org, richard.weiyang@gmail.com, geert+renesas@glider.be, tim.c.chen@linux.intel.com, linux@treblig.org, alexander.shishkin@linux.intel.com, lillian@star-ark.net, chenhuacai@kernel.org, francesco@valla.it, guoweikang.kernel@gmail.com, link@vivo.com, jpoimboe@kernel.org, masahiroy@kernel.org, brauner@kernel.org, thomas.weissschuh@linutronix.de, oleg@redhat.com, mjguzik@gmail.com, andrii@kernel.org, wangfushuai@baidu.com, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-i2c@vger.kernel.org, linux-arch@vger.kernel.org, linux-modules@vger.kernel.org, rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev, 2407018371@qq.com, dakr@kernel.org, miguel.ojeda.sandonis@gmail.com, neilb@ownmail.net, bagasdotme@gmail.com, wsa+renesas@sang-engineering.com, dave.hansen@intel.com, geert@linux-m68k.org, ojeda@kernel.org, alex.gaynor@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, rust-for-linux@vger.kernel.org Subject: [PATCH v19 07/40] dept: distinguish each work from another Date: Mon, 6 Jul 2026 15:18:55 +0900 Message-Id: <20260706061928.66713-8-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260706061928.66713-1-byungchul@sk.com> References: <20260706061928.66713-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSbUxTZxiGfc95z0c7ak46M86YU9ONzTl1asQ9OmPULfpG92ObWbKPH3Iy 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vGztZJzZBlX5A0ihbWz8rZ/3gcryubvUQPYjToOF6fCs4aD0h5W4OYGARY0+E/OuaPUtlIYF3MA9H7dzGPJNzDSw4k5joewmx9Y8H7IIhHtOJiRZLjAKg/fGpQL1QSSZnI54n8pB+itJDt8QW3hPjONkHmUd5VOL8WA7G1tPRFIUuw9fGDw+XAQol+yZAsX5zxBpS677NEguAfpw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 c6ea96d5b716..4a4075d0697c 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -55,6 +55,7 @@ #include #include #include +#include #include "workqueue_internal.h" @@ -3204,6 +3205,8 @@ __acquires(&pool->lock) 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() != pool->cpu); -- 2.17.1