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Sat, 10 Aug 2024 16:52:59 -0700 (PDT) Received: from [2620:0:1008:15:8522:e02:424a:c5b5] ([2620:0:1008:15:8522:e02:424a:c5b5]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-200bb9b4dcesm16021725ad.139.2024.08.10.16.52.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 10 Aug 2024 16:52:59 -0700 (PDT) Date: Sat, 10 Aug 2024 16:52:57 -0700 (PDT) From: David Rientjes To: Axel Rasmussen cc: Andrew Morton , Christoph Lameter , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Joonsoo Kim , Pekka Enberg , Roman Gushchin , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm, slub: print CPU id on slab OOM In-Reply-To: <20240806232649.3258741-1-axelrasmussen@google.com> Message-ID: <4e06d3ee-de78-9a71-ccec-6c0a5aa0c7f6@google.com> References: <20240806232649.3258741-1-axelrasmussen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspam-User: X-Stat-Signature: 3q8a8wmcb18ezy1fdt5f656po6zj44ef X-Rspamd-Queue-Id: 0E75CA0013 X-Rspamd-Server: rspam11 X-HE-Tag: 1723333980-645780 X-HE-Meta: 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 XcLVZzpI fjxMdaAH4I3DnWEzSi2lsGztkj6TW8Y9YlTM+0XuF6JWo8v89/J/YUalqij0xsxwDxXqT453f0nVlshZdt0qwle+1LRoBW8f5Uq0OXsX7jnzV73h1LqZdXEoxfYgeA6InbYMCWOXMNAjKHz8uwaay8DCjp3A8IU2qJt4nVbW5+3U9O3hqjhXciK9pHEuEKkApvhoV/scDEaOf0a9bHktaF+G2EVcWaDaUkHx2ht+nUHRrppxa0+0Hr4UXW9IKZfwKIZrFL3Med9KuqUHNpk8mos2WEQZUpcDiJuuJxbHLv6GPqoJHlUA92k/hBh2o2fuAQKTlDIBuk00HnEjy7o6bW17hLRqZakiWPNj8MIHMCyACFqZmQT0/zmMmamoElZ5iBnf/vGIzEIfZddF9WXc9WEWTfg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.005409, 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 Tue, 6 Aug 2024, Axel Rasmussen wrote: > Depending on how remote_node_defrag_ratio is configured, allocations can > end up in this path as a result of the local node being OOM, despite the > allocation overall being unconstrained (node == -1). > > When we print a warning, printing the current CPU makes that situation > more clear (i.e., you can immediately see which node's OOM status > matters for the allocation at hand). > > Signed-off-by: Axel Rasmussen Acked-by: David Rientjes