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[173.79.60.52]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-91040646d64sm95118286d6.14.2026.09.07.08.42.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2026 08:42:25 -0700 (PDT) Date: Mon, 7 Sep 2026 11:42:22 -0400 From: Gregory Price To: Ye Liu Cc: Oleg Nesterov , "Peter Zijlstra (Intel)" , Marco Elver , Ye Liu , Tejun Heo , Christian Brauner , Bart Van Assche , Yi Tao , Michal Hocko , paulmck@kernel.org, mingo@redhat.com, rostedt@goodmis.org, jpoimboe@kernel.org, mic@digikod.net, tglx@kernel.org, akpm@linux-foundation.org, david@kernel.org, linmiaohe@huawei.com, nao.horiguchi@gmail.com, rafael@kernel.org, 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, will@kernel.org, boqun@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, josh@joshtriplett.org, urezki@gmail.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, 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, mhiramat@kernel.org, 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 1/8] sched: introduce for_each_process_rculock and for_each_thread_rculock Message-ID: References: <20260907081334.1152889-1-ye.liu@linux.dev> <20260907081334.1152889-2-ye.liu@linux.dev> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260907081334.1152889-2-ye.liu@linux.dev> On Mon, Sep 07, 2026 at 04:13:27PM +0800, Ye Liu wrote: > From: Ye Liu > > Introduce for_each_process_rculock(), for_each_thread_rculock() and > for_each_process_thread_rculock() macros that acquire the RCU read > lock before the iteration starts and release it when the loop is left, > so that the RCU read-side critical section is scoped to the loop body > instead of an externally managed rcu_read_lock()/rcu_read_unlock() > pair. > > Signed-off-by: Ye Liu > Acked-by: Michal Hocko Lorenzo already picked up the nits, this is really nice otherwise. Reviewed-by: Gregory Price (Meta)