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Howlett" , Andrew Morton , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , damon@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 31/37] Docs/mm/damon/design: document threads type sample filter Date: Sun, 7 Dec 2025 22:29:35 -0800 Message-ID: <20251208062943.68824-32-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251208062943.68824-1-sj@kernel.org> References: <20251208062943.68824-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: do7byb6g77f4877zj1kuyom88igpd3xo X-Rspamd-Queue-Id: 5D9CA1C0018 X-Rspamd-Server: rspam06 X-HE-Tag: 1765175438-578449 X-HE-Meta: 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 iOQ8BHjr 7RjRs/YodS97QlU3HLxyfYqHywIpCuyw+haS3hrdFrV+Z8l89y3et6cQCjR0eSTpTexk+pWRa6CvbZbH4gmpzQZog9VfXEbyTPKEdqmi0nQMqJw3x+20ODIY+F6dviPnAVwIf/JOKX5ptxvJ6rhCbUp6WRR9a/NIAcDlKcbpHnuhirUG7nwadO0exhZUcm+89SX/Ae3jQy4PRPJWiA7BxYHVnrEFuCjXoAin6myyDI8679kI= 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: Update DAMON design document for threads type access sample results filtering. Signed-off-by: SeongJae Park --- Documentation/mm/damon/design.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst index 9a4679de437f..4c6d83263a7b 100644 --- a/Documentation/mm/damon/design.rst +++ b/Documentation/mm/damon/design.rst @@ -148,7 +148,7 @@ the page protection in a way similar to that of NUMA balancing hinting faults. Then the page fault handler reports the faults happend by the installed page protection to DAMON core layer. Compared to the accessed-bit based one, this approach gives more information to DAMON, such as the access-generated -CPU. +CPU/threads. ``paddr`` uses :ref:`accessed-bit based check ` by default, and users can change @@ -314,6 +314,9 @@ Below ``type`` of access sampling results filter are currently supported. - cpumask - Whether the sampled access was generated by a cpu that included in a given cpumask. +- threads + - Whether the sampled access was generated by a thread that having a thread + (task) id that exist in a given array of ids. .. _damon_design_age_tracking: -- 2.47.3