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b=m+yN6taFSUqSAUEhHtyGiwsy1LGNCf4WWkeAhIcHgVhg0aGsOCyomXhgzmIQyipes 3NrAJ+BHdIx1HLjpRkT3VtrnIpPOAmBEQxtw6Fyku1mXu01mSRV76hzup9JESMLldh EoTlJUJkGaM/fupQiVl8U9ukruUe+mn0ZZq955LA+X5TWQnl8GSV+o8QOuk65o7TUY ZPJeGS4IycxdPsPRfefZ4qyY7efkfNnszCFoNtifsZEVNLaHS605y8GihFkkmImCfJ YXiSj2lMD12yJCrKOP1luw3pNEVPzQdMK0q6dAOrpumYRBvdEFPF256fas3AcqQSHb zmu1aLnJSUiWQ== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 02/10] mm/damon: add DAMOS quota goal type for per-memcg per-node memory usage Date: Fri, 17 Oct 2025 14:26:54 -0700 Message-ID: <20251017212706.183502-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251017212706.183502-1-sj@kernel.org> References: <20251017212706.183502-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 4cm1bhzheyz8q1tnf55hgj7zhhnx8ydf X-Rspamd-Queue-Id: D717E20007 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1760736435-436269 X-HE-Meta: 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 4oSM3L3d AXCK124/0l11m9hG0rhiz/3n9ykAeGYIGzLRWdc6AfZvcxDBpxKL1GF4Z7A6MhW3sG4NwH5e5T8hFfwquWwkY2CSEMFAxNZSq7rFcoCH8gs2Y0jG2wePiOWR5NbYNW65G0SlNDX88LMOG+qbaXDCA3X7DdKnck7hnXa30+5Q5FZdDfjPGK+JwlZQO3mgzTITVpdNHBKArCdRo5+xZRY7hvtns2c54A7g7lQMUbka1PwsekT3kUpErtrhXVB6BWHhEf5niMY9xmgUjLyw= 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: Define a new DAMOS quota auto-tuning target metric for per-cgroup per-node memory usage. For specifying the cgroup of the interest, add a field, namely memcg_id, to damos_quota_goal struct. Note that this commit is only implementing the interface. The handling of the interface (the metric value calculation) will be implemented in the following commit. Signed-off-by: SeongJae Park --- include/linux/damon.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index bb92c5f396cf..862531f1a379 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -147,6 +147,7 @@ enum damos_action { * @DAMOS_QUOTA_SOME_MEM_PSI_US: System level some memory PSI in us. * @DAMOS_QUOTA_NODE_MEM_USED_BP: MemUsed ratio of a node. * @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. * @NR_DAMOS_QUOTA_GOAL_METRICS: Number of DAMOS quota goal metrics. * * Metrics equal to larger than @NR_DAMOS_QUOTA_GOAL_METRICS are unsupported. @@ -156,6 +157,7 @@ enum damos_quota_goal_metric { DAMOS_QUOTA_SOME_MEM_PSI_US, DAMOS_QUOTA_NODE_MEM_USED_BP, DAMOS_QUOTA_NODE_MEM_FREE_BP, + DAMOS_QUOTA_NODE_MEMCG_USED_BP, NR_DAMOS_QUOTA_GOAL_METRICS, }; @@ -166,6 +168,7 @@ enum damos_quota_goal_metric { * @current_value: Current value of @metric. * @last_psi_total: Last measured total PSI * @nid: Node id. + * @memcg_id: Memcg id. * @list: List head for siblings. * * Data structure for getting the current score of the quota tuning goal. The @@ -179,6 +182,9 @@ enum damos_quota_goal_metric { * * If @metric is DAMOS_QUOTA_NODE_MEM_{USED,FREE}_BP, @nid represents the node * id of the target node to account the used/free memory. + * + * If @metric is DAMOS_QUOTA_NODE_MEMCG_USED_BP, @nid and @memcg_id represents + * the node id and the cgroup to account the used memory for. */ struct damos_quota_goal { enum damos_quota_goal_metric metric; @@ -187,7 +193,10 @@ struct damos_quota_goal { /* metric-dependent fields */ union { u64 last_psi_total; - int nid; + struct { + int nid; + unsigned short memcg_id; + }; }; struct list_head list; }; -- 2.47.3