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Mon, 26 Jun 2023 08:49:35 -0400 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id EEE872722; Mon, 26 Jun 2023 05:48:16 -0700 (PDT) X-AuditID: a67dfc5b-d85ff70000001748-6b-64997d6ca482 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, paolo.valente@linaro.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, 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, 42.hyeyoo@gmail.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, hdanton@sina.com, her0gyugyu@gmail.com Subject: [PATCH v10 13/25] dept: Distinguish each work from another Date: Mon, 26 Jun 2023 20:56:48 +0900 Message-Id: <20230626115700.13873-14-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230626115700.13873-1-byungchul@sk.com> References: <20230626115700.13873-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzXSe0xTdxQHcH/38bu3lZKb+rqiUVNDzPCFBuXojBpN9P7hazOaBTelsXej kSJpAUFDgloXaYUIUguCSymuNlBBCyGolADy9EUdhAEWBOILBUmYrSAIK6j/nHxyzsn3/HNY Ul5FB7HqmDhRG6OMVmApJR0KyF+tSc5RhU6dhoxLoeD9eJGCvBIHBndxEQJH2VkCBup3w7++ QQTjT1pIMJvcCPL7ukkoa+hB4LKfw9D6MhDavMMYmk1GDOcLSjA8ez9BgOdqJgFFzr3w6LKV gOqxNxSYBzDkms8T/vKWgDFbIQO2lGDot19jYKJvHTT3tNPg6loJOX95MFS6miloqOgnoPVe HoYexxQNjxqaKHBnpNFw64MVw3ufjQSbd5iBf6otBNzW+4PeTbgI+PO/SRoa06r9unGHgLbO +wiqLvYS4HS0Y3jgHSSg1Gki4fPNegT96UMMXLg0xkDu2XQExgtXKWj50kiD3rMBxkfz8PYf hQeDw6SgLz0luHwWSnho5YW717oZQV/VxQgWZ7xQag8RCioHCCF/xEsLzsJULDhHMhnBMNRG CJ72Six8ePqUEZqyx6kDiyOkW1RitDpB1K7dGimNuuOexLEf5ySacv+mU1A5Z0ASlufCePvr GvTdI6/uktPG3Aq+o2NsxnO5ZXxp2mvagKQsyRXM5t801THTgzncTr7elzVjigvm6xr11LRl 3EY+3VqMv4Yu5YtuV88ESfz9+4+tM8fk3Ab+nKf2284VCT95I/yrF/I19g7qMpJZ0KxCJFfH JGiU6uiwNVFJMerENcdPapzI/1W25IkjFWjEfbAWcSxSBMhCl2Sr5LQyQZekqUU8SyrmyuaP mlVymUqZdFrUnjymjY8WdbVoEUspFsjW+06p5NwfyjjxhCjGitrvU4KVBKWgVfd+GQ0xX38c H1kfYawJ2ny8axnbGfm7xmhR9YZLg7OLCnW2M1nil+d9B1MNOwIDUg9kZWQvDhyoWL3HuPzo VsmCFw3kLlOd5p0rvHz29n3HEonx/Zu6f2vd/6m8JO+nX1terMwvC+s0dHRqfz48z6RNDvih PNbRuynzunRb3NShJFZB6aKU60JIrU75Pw6yyNRRAwAA X-Brightmail-Tracker: H4sIAAAAAAAAAzXSe0iTexgHcH/v5ffOt9Z5WWJvdmXnSKeijkbGE4UE3X4YWRBR+Ef10l5y OE02XRpFpqvMmmQ1l6lhs5aop3TaoYsT07x13UmxC9NqXcy8kTnL1Goa/fPw4fuF71+PglbZ 2CCFNi5B1sdJOjXmGT5yRdoi3cEcTUi25y/IOhkC3sF0BvKulWJwXS1BUFp5mIKu+vXwdKgH wcjDxzRYLS4EF1+301DZ0IHAWZSKoeXtFGj19mNotpzAkFZ4DcP/3aMUuLNPU1Di2Aj3T9ko qBnuZMDahSHXmkb5zgcKhu3FHNhTgsFTdJ6D0deh0NzRxkJdfjMLzhcLIeeCG0OVs5mBhhse Clpu5WHoKP3Bwv2GJgZcWWYW/u2zYegestNg9/Zz8KSmgIIyk2/t46iTgqOfv7PQaK7x6VI5 Ba3PbyOoTn9FgaO0DUOdt4eCCoeFhm9X6hF4Mns5OHJymIPcw5kIThzJZuDxWCMLJncYjHzN w6tWkrqefpqYKvYR51ABQ+7ZRHLzfDtHTNUvOFLgSCQVRQtIYVUXRS4OeFniKD6OiWPgNEcy elsp4m6rwqTv0SOONJ0bYTbPiuJXamSd1ijr/wnfxUeXu77j+MGpSZbcy2wK+k/IQP4KUVgq Dry7SY8bC/PEZ8+GJxwgzBUrzO/ZDMQraKFwktjZdJcbL6YKq8X6obMTZoRg8W6jiRm3Ulgm Ztqu4l+jc8SSspqJIX9ffvuBDY1bJYSJqe5afArxBcivGAVo44yxklYXttgQE50cp01avHtv rAP5Psd+cDTrBhpsWV+LBAVST1aGzD6nUbGS0ZAcW4tEBa0OUAZ+tWpUSo2UvF/W792pT9TJ hlo0Q8Gopykjtsm7VMIeKUGOkeV4Wf+7pRT+QSnILPfihUmfjvW1bEiIGcv55vXmbEoM3LP2 0Fjj1k/lgV+uT34ZXD0z8clSV8n8sukR4d7wo+mh0sczUV+K3vBRkZ0kqN38Jz9pvpQanNXm xxxoT00e88uPWMPHTzN0xSy3zltXuSNs5M6WtdvFJZv+2GbUddvv+M8pNEYNWpgLf0d61Iwh WgpdQOsN0k8Tj+VLNQMAAA== X-CFilter-Loop: Reflected X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org 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 --- include/linux/dept.h | 2 ++ kernel/dependency/dept.c | 10 ++++++++++ kernel/workqueue.c | 3 +++ 3 files changed, 15 insertions(+) diff --git a/include/linux/dept.h b/include/linux/dept.h index f62c7b6f42c6..d9ca9dd50219 100644 --- a/include/linux/dept.h +++ b/include/linux/dept.h @@ -515,6 +515,7 @@ extern void dept_ecxt_exit(struct dept_map *m, unsigned long e_f, unsigned long extern void dept_sched_enter(void); extern void dept_sched_exit(void); extern void dept_kernel_enter(void); +extern void dept_work_enter(void); static inline void dept_ecxt_enter_nokeep(struct dept_map *m) { @@ -567,6 +568,7 @@ struct dept_task { }; #define dept_sched_enter() do { } while (0) #define dept_sched_exit() do { } while (0) #define dept_kernel_enter() do { } while (0) +#define dept_work_enter() do { } while (0) #define dept_ecxt_enter_nokeep(m) do { } while (0) #define dept_key_init(k) do { (void)(k); } while (0) #define dept_key_destroy(k) do { (void)(k); } while (0) diff --git a/kernel/dependency/dept.c b/kernel/dependency/dept.c index 4165cacf4ebb..6cf17f206b78 100644 --- a/kernel/dependency/dept.c +++ b/kernel/dependency/dept.c @@ -1977,6 +1977,16 @@ void dept_hardirqs_off_ip(unsigned long ip) } EXPORT_SYMBOL_GPL(dept_hardirqs_off_ip); +/* + * Assign a different context id to each work. + */ +void dept_work_enter(void) +{ + struct dept_task *dt = dept_task(); + + dt->cxt_id[DEPT_CXT_PROCESS] += 1UL << DEPT_CXTS_NR; +} + void dept_kernel_enter(void) { struct dept_task *dt = dept_task(); diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 07895deca271..69c4f464d017 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -51,6 +51,7 @@ #include #include #include +#include #include "workqueue_internal.h" @@ -2199,6 +2200,8 @@ __acquires(&pool->lock) lockdep_copy_map(&lockdep_map, &work->lockdep_map); #endif + dept_work_enter(); + /* ensure we're on the correct CPU */ WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) && raw_smp_processor_id() != pool->cpu);