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Wysocki" , Andrew Morton , Ingo Molnar , Will Deacon , Boqun Feng , "Paul E. McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Uladzislau Rezki , Juri Lelli , Vincent Guittot , Steven Rostedt , Masami Hiramatsu , Josh Poimboeuf , Ye Liu , Michal Hocko , mic@digikod.net, david@kernel.org, linmiaohe@huawei.com, nao.horiguchi@gmail.com, gnoack3000@gmail.com, ljs@kernel.org, sj@kernel.org, rientjes@google.com, shakeel.butt@linux.dev, xu.xin16@zte.com.cn, chengming.zhou@linux.dev, tony.luck@intel.com, reinette.chatre@intel.com, x86@kernel.org, paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, pavel@kernel.org, lance.yang@linux.dev, pmladek@suse.com, longman@redhat.com, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang@linux.dev, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, mark.rutland@arm.com, Dave.Martin@arm.com, james.morse@arm.com, babu.moger@amd.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, rcu@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org Subject: Re: [PATCH v2 5/8] kernel: convert process/thread iterators to for_each_*_rculock Message-ID: References: <20260907081334.1152889-1-ye.liu@linux.dev> <20260907081334.1152889-6-ye.liu@linux.dev> MIME-Version: 1.0 In-Reply-To: <20260907081334.1152889-6-ye.liu@linux.dev> X-Scanned-By: MIMEDefang 3.6 on 10.30.177.95 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: yd5ZYyBmKc3dfokdY7kKQawTiWpLyj7Yhdl6PxnH1PE_1788849785 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-Stat-Signature: naiehz5yiqusikchupzdpsppm9zy63bz X-Rspamd-Queue-Id: 10943C0003 X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1788849795-595922 X-HE-Meta: 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 LggMsJ99 4Y+3bnDLke7p6VFFuI8uG82DlmBlDpSm82Z4ICYhqSMWog0EKChVFf4YEkXNL7loBk5uVQhU+Sm1Pq0DPRKHhTF8OxCX2tIQy4Q9JrfI+2WBNJxltQW4gxTn5f4PRRNzSG1BfIG0LfSP+Lp7fMTHAoYZTsmsBXuv8CO7syT27JTHeoTlK755Yg+lpxzTl+ZD7cYflk39JyFbWxy3EjPg6bHXH8dDQB6/hHji5+nvVmC1xmywATJPsLtyuwvVsb+DCelw5el7WxS6rWbnxt44p9KnfijX/H09V+Qhjh/wEhgY0KlYMDc0Lqv7233+tTD0SkHnpzLxbscU0R/LWvdMCpTzdTNOW33Lb3cJCnRJDnH/oOw6nf1fTbU3n/c7PCcuHPM6QWcQqPTaMPmAaD0geGwVVrFwheGr8TLkW7vzd9m7RcyutVP/FJZGYcVrl7cgkFBTVRuXr/GJF3i49RvKsTJ5NyuefaRV8x19OY88CJzRTOfbY9FxM+/r7aVSgakJjzh2zbycYWQjyAZaAOaCaGPUXBOZj/oXx+2pidS4IXu18ZdV5FOXNWEwMA5Wb35C7Ko+lkgFmMDpczTs= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 09/07, Ye Liu wrote: > > From: Ye Liu > > Replace the manual rcu_read_lock()/rcu_read_unlock() and guard(rcu) > pairs combined with for_each_process(), for_each_thread() and > for_each_process_thread() loops across kernel/ with the > for_each_*_rculock() macros, which scope the RCU read lock to the > loop body via scoped_guard(rcu). > > No functional change. > > Signed-off-by: Ye Liu > Acked-by: Michal Hocko > --- > Changes in v2: > - Rename *_rcu to *_rculock > - Rename stale 'unlock:' label to 'out:' in hung_task.c (Günther Noack) > kernel/cpu.c | 4 +--- > kernel/freezer.c | 4 +--- > kernel/hung_task.c | 11 ++++------- > kernel/locking/lockdep.c | 4 +--- > kernel/rcu/update.c | 4 +--- > kernel/sched/core.c | 3 +-- > kernel/sched/debug.c | 4 +--- > kernel/trace/fgraph.c | 8 ++------ > kernel/unwind/deferred.c | 3 +-- Reviewed-by: Oleg Nesterov