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From: Shakeel Butt To: Thomas Ballasi Cc: akpm@linux-foundation.org, axelrasmussen@google.com, david@kernel.org, hannes@cmpxchg.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, mhiramat@kernel.org, mhocko@kernel.org, rostedt@goodmis.org, weixugc@google.com, yuanchu@google.com, zhengqi.arch@bytedance.com Subject: Re: [PATCH v7 3/3] mm: vmscan: add PIDs to vmscan tracepoints Message-ID: References: <20260213181537.54350-1-tballasi@linux.microsoft.com> <20260223171544.4750-1-tballasi@linux.microsoft.com> <20260223171544.4750-4-tballasi@linux.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260223171544.4750-4-tballasi@linux.microsoft.com> X-Migadu-Flow: FLOW_OUT X-Stat-Signature: 3x4iwp1n58tmbt34iks9xmnwybs6u9bn X-Rspamd-Server: rspam11 X-Rspam-User: X-Rspamd-Queue-Id: 43A48120012 X-HE-Tag: 1771875774-483688 X-HE-Meta: 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 jiR7N39j oKGeKuPPfzYbhXSvnxk9p6KxeFBQeOzUvNO5V4vodU3ietvPRd3jxTUi1Vhx9yWvyqm8elQcB1jqqS+IAawdGK04Q6YZY9X70wCKOUapincoFPY1lPoS+E/FTJ3rPr0AX2HrgH5REKN82ldXFr/q7OqVGjXX53sBg2CIIFzK7tijkL25xGX2/hsnO8dMrjnru8k+iTgqwgQ7HKHyYvOrb3mEO7w== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Feb 23, 2026 at 09:15:44AM -0800, Thomas Ballasi wrote: > The changes aims at adding additionnal tracepoints variables to help > debuggers attribute them to specific processes. > > The PID field uses in_task() to reliably detect when we're in process Where is this in_task() check happening? Also this patch is changing tracepoints for memory reclaim which never happens in any context other than process context, so we don't need __event_in_irq() checks for these tracepoints.