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b=DDScZksg15rxir5Ww+HYRRdG+O7S6h/fAfriR9yeBLWKpn4QdQMtWmvu6DH+HI+O4 OkjGWlFBRGjdTA3wICFeOTXrtpCtheKGnk/STJZ1+tF1yOWtbv2iw9lJWjtdRS+Vxs O6Tsez+l1cu6NnRir8S+87ZZov6mmA+LmQmSrTN2D9gAfHmTmfPwm09PYPTu+PfdTm AUwq4nPWthRiceIezjrEVg72nuXe8W9A6sKvzzCY/6oMz86r2H4FYkbyuAxWQOn3QA X0vxeYlWCxv8LOqYFx6dR9zTQXOQkR7lG35a/1MvzbHdZOSEsntGiikkiU4p+tVCU7 K8XLF4kEVrjSQ== 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 6/6] mm/damon: add write field to damon_access_report Date: Sun, 29 Jun 2025 13:14:43 -0700 Message-Id: <20250629201443.52569-7-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-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: D6C9BA0008 X-Stat-Signature: xm45nn4y56wknf3gu51qmxkgapiokdfb X-HE-Tag: 1751228093-596666 X-HE-Meta: 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 FNB5gHN5 wR6AfA/7TtUz14x/GG6uuvEhsjIaavT2gbap3EZ7dUswNo+0JJvFgsYMXLutj05fIsAY5NoUrI8l0IG1eamTpS0y2AT25HEdG54bg66IPjgamm+qrLtwVnBJlTycUcykyLgLe1qFTEBQiDcD5Zfg7lxLcLw/5EZhYocP1rRcA0z7QS8ECW/EH8T2w3/jSXDfVrE5Bupythbd3RZdTlfftqh7upb9qAsW0lOFcPXUXME/kq7coB2ARBa6rCMGJGcx40U+zIncau/3PvsA492LNrbPC59irUJp6+uySlVTak7mQWFIK2iMXYPvCZRq7e9mkJGgLIL7bwvAbdLTBgruu+1ptpw== 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 commit is for showing the first part of the idea for implementing write-only access monitoring. 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 29223fea710f..bd5e3287f6f2 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -112,6 +112,7 @@ struct damon_target { * @size: The size of the reporting region. * @nr_accesses: Number of detected accesses to the region. * @node_id: NUMA node that made the access. + * @write: Whether the access is write. * * @pid could be stale, and hence shouldn't be de-referenced. */ @@ -121,6 +122,7 @@ struct damon_access_report { unsigned long size; int nr_accesses; int node_id; + bool write; /* private: */ unsigned long report_jiffies; /* when this report is made */ }; -- 2.39.5