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Wed, 27 Aug 2025 11:34:26 -0700 (PDT) Received: from localhost ([2a03:2880:31ff:1::]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45b6f0f3362sm40614335e9.17.2025.08.27.11.34.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Aug 2025 11:34:25 -0700 (PDT) From: Yueyang Pan To: Suren Baghdasaryan , Andrew Morton , Vlastimil Babka , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Usama Arif Cc: linux-mm@kvack.org, kernel-team@meta.com, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/2] mm/show_mem: No print when not mem_alloc_profiling_enabled() Date: Wed, 27 Aug 2025 11:34:22 -0700 Message-ID: <308e0293e68dfadb2ca3ee5b4c650fc3d09d7a35.1756318426.git.pyyjason@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 08BE3A000F X-Rspam-User: X-Stat-Signature: 3wrfqw9ob7irqqjcoufywqpp6ufyzkm8 X-Rspamd-Server: rspam09 X-HE-Tag: 1756319667-511737 X-HE-Meta: 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 eOjpGCeu 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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: This patch makes print kernel memory allocation information controlled by mem_alloc_profiling_enabled() so that we won't see all zero numbers in production. Signed-off-by: Yueyang Pan --- mm/show_mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/show_mem.c b/mm/show_mem.c index 41999e94a56d..b71e222fde86 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -419,7 +419,7 @@ void __show_mem(unsigned int filter, nodemask_t *nodemask, int max_zone_idx) printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages)); #endif #ifdef CONFIG_MEM_ALLOC_PROFILING - { + if (mem_alloc_profiling_enabled()) { struct codetag_bytes tags[10]; size_t i, nr; -- 2.47.3