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[23.116.43.216]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7943b2b9bfcsm6436687b3.38.2026.01.22.20.57.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Jan 2026 20:57:42 -0800 (PST) From: Ravi Jonnalagadda To: damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: sj@kernel.org, akpm@linux-foundation.org, corbet@lwn.net, bijan311@gmail.com, ajayjoshi@micron.com, Ravi Jonnalagadda Subject: [RFC PATCH 1/5] mm/damon/core: add DAMOS_QUOTA_NODE_SYS_BP metric Date: Thu, 22 Jan 2026 20:57:24 -0800 Message-ID: <20260123045733.6954-2-ravis.opensrc@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260123045733.6954-1-ravis.opensrc@gmail.com> References: <20260123045733.6954-1-ravis.opensrc@gmail.com> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a node-scoped "system bp" goal metric for PA-based migration control. This metric represents basis points (bp, 1/10,000) for (scheme-eligible bytes on node nid) / (system total bytes) Signed-off-by: Ravi Jonnalagadda --- include/linux/damon.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 3813373a9200..ec5ed1a217fc 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -155,6 +155,7 @@ enum damos_action { * @DAMOS_QUOTA_NODE_MEM_FREE_BP: MemFree ratio of a node. * @DAMOS_QUOTA_NODE_MEMCG_USED_BP: MemUsed ratio of a node for a cgroup. * @DAMOS_QUOTA_NODE_MEMCG_FREE_BP: MemFree ratio of a node for a cgroup. + * @DAMOS_QUOTA_NODE_SYS_BP: Scheme-eligible bytes ratio of a node. * @NR_DAMOS_QUOTA_GOAL_METRICS: Number of DAMOS quota goal metrics. * * Metrics equal to larger than @NR_DAMOS_QUOTA_GOAL_METRICS are unsupported. @@ -166,6 +167,7 @@ enum damos_quota_goal_metric { DAMOS_QUOTA_NODE_MEM_FREE_BP, DAMOS_QUOTA_NODE_MEMCG_USED_BP, DAMOS_QUOTA_NODE_MEMCG_FREE_BP, + DAMOS_QUOTA_NODE_SYS_BP, NR_DAMOS_QUOTA_GOAL_METRICS, }; -- 2.43.0