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b=HLLQiMTrdkfWG+0QJKZwk4tKX4x0i/eeK7i54O+f1YTLiM8iw6R9wxZHpKZzkUBUW QYnHWqhzUKFCWlxwH8p4XuqoK/OrUko8ZLePedEcjY6CXWBvPGLCFcCibjBKrU+WRi Cc4MkK3NqYP23pz70I+YBKgTyC3SPdDoW+u13sVelRJ8Y6Yqx2PlNYXRKjFGoP1w4N YwIgBIZuR7P1uH+X2BQXuvZfgOglPsDfqupH0nUC3sdYAEZWTgBlpDhXfRQL0g2cjk tZYH/4erPvfDEvxlQOQ2eL77aPwKZMayofNWR++bW9XG8CKJH9sSqQeFq7LDGpktlV zLyP4ch46bMGQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 5/6] mm/damon: add node_id to damon_access_report Date: Sun, 29 Jun 2025 13:14:42 -0700 Message-Id: <20250629201443.52569-6-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250629201443.52569-1-sj@kernel.org> References: <20250629201443.52569-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: mtk43ifb4kmehwmkouoysucbkf1woaju X-Rspamd-Queue-Id: EBBA218000F X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1751228092-2212 X-HE-Meta: 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 dInShOvr v1eTZqMlzWYijen17V28ucmR71e7eiNP4G9DAZbfa+QcbWfFxxAtJMPLHf1s2GUxAV3yHYO2EuHaLbrb5Bn2r8KQUoJwbFmf55ra8qfZ/bdluEOoUNXwuDXjrZyNNJKlUOPe9L0aldCz41ipq6uFRgXfHLT3CiOe5ne9/cxtkZ7LxRgzlINIGa5z/nyMqLpPmL+VL3rhh/Y0L1MpWpJvqbV1Wm9HdjaT+KaM2qOIJ91riFYc77rOJv7tYCeRpk//XRzFzOLuNYaRr1r3y4On7ZRVF9dfix0hS9Aa6kWVkkgTugR+uynwiKs8b9Q== 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: In future, per-CPU or per-NUMA node monitoring might be required. We can add the information in damon_access_report and implement the damon_report_access() callers filling the information. And the new operations set implementation for the per-CPU or per-NUMA node access monitoring can show and ignore unnecessary reports via damon_operations->eligible_report() callback. This commit is for showing the first part of the idea. Signed-off-by: SeongJae Park --- include/linux/damon.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 9ec40ce7dde0..29223fea710f 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -111,6 +111,7 @@ struct damon_target { * @addr: The start address of the reporting region. * @size: The size of the reporting region. * @nr_accesses: Number of detected accesses to the region. + * @node_id: NUMA node that made the access. * * @pid could be stale, and hence shouldn't be de-referenced. */ @@ -119,6 +120,7 @@ struct damon_access_report { unsigned long addr; unsigned long size; int nr_accesses; + int node_id; /* private: */ unsigned long report_jiffies; /* when this report is made */ }; -- 2.39.5