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[109.81.92.185]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-39c0b79e393sm16360517f8f.72.2025.04.02.00.18.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Apr 2025 00:18:36 -0700 (PDT) Date: Wed, 2 Apr 2025 09:18:34 +0200 From: Michal Hocko To: Steven Rostedt Cc: Andrii Nakryiko , linux-trace-kernel@vger.kernel.org, peterz@infradead.org, mingo@kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, oleg@redhat.com, brauner@kernel.org, glider@google.com, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, akpm@linux-foundation.org Subject: Re: [PATCH] exit: add trace_task_exit() tracepoint before current->mm is reset Message-ID: References: <20250401184021.2591443-1-andrii@kernel.org> <20250401173249.42d43a28@gandalf.local.home> <20250401173416.45a164c8@gandalf.local.home> Precedence: bulk X-Mailing-List: linux-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: <20250401173416.45a164c8@gandalf.local.home> On Tue 01-04-25 17:34:16, Steven Rostedt wrote: > On Tue, 1 Apr 2025 17:32:49 -0400 > Steven Rostedt wrote: > > > static void exit_mm(void) > > { > > struct mm_struct *mm = current->mm; > > > > exit_mm_release(current, mm); > > trace_exit_mm(mm); > > > > ?? > > That should have been: > > static void exit_mm(void) > { > struct mm_struct *mm = current->mm; > > trace_exit_mm(mm); > exit_mm_release(current, mm); If the primary usecase is to get an overview of the mm before exiting then this is more appropriate. -- Michal Hocko SUSE Labs