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Thu, 14 Aug 2025 10:11:59 -0700 (PDT) Received: from localhost ([2a03:2880:31ff::]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b79c46ee84sm50127252f8f.57.2025.08.14.10.11.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Aug 2025 10:11:58 -0700 (PDT) From: Yueyang Pan To: Suren Baghdasaryan , Kent Overstreet , Usama Arif Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [RFC 0/1] Try to add memory allocation info for cgroup oom kill Date: Thu, 14 Aug 2025 10:11:56 -0700 Message-ID: X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 19g1u4mni9zar4s8hma7ep8iih95uejd X-Rspam-User: X-Rspamd-Queue-Id: 48FF2140003 X-Rspamd-Server: rspam01 X-HE-Tag: 1755191521-359990 X-HE-Meta: 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 2sFgCY0Q 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 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: Right now in the oom_kill_process if the oom is because of the cgroup limit, we won't get memory allocation infomation. In some cases, we can have a large cgroup workload running which dominates the machine. The reason using cgroup is to leave some resource for system. When this cgroup is killed, we would also like to have some memory allocation information for the whole server as well. This is reason behind this mini change. Is it an acceptable thing to do? Will it be too much information for people? I am happy with any suggestions! Yueyang Pan (1): Add memory allocation info for cgroup oom mm/oom_kill.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.47.3