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Howlett" , Andrew Morton , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Randy Dunlap , Shuah Khan , 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 6/7] Docs/admin-guide/mm/damon/usage: update for quota goal complement file Date: Fri, 18 Sep 2026 07:28:25 -0700 Message-ID: <20260918142827.85303-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260918142827.85303-1-sj@kernel.org> References: <20260918142827.85303-1-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0183AA0010 X-Stat-Signature: jekh3jdjw86w6btpjaqxmqyxqfcbdcd1 X-Rspam-User: X-HE-Tag: 1789741718-558204 X-HE-Meta: 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 cioj9N2t quJPSZg84o/nxtPqfxjxzzprhu1qkngNicRdKtrIIfq/B8Z7+XJOLoaomUS1a64NIA8O+U/cCg3AUI1dDk4RkB/D56wEhBAl9TZtrOQmjCYEU8NvMNmqEVuMfLWBp78zfbvkWnJQSXxRSSzXqNC2dwrEtOM48oSkKkFwRFwo7NUscDJ35qQGKHHaAGK6URJ2f2dv4O3WTA0kLvo/J5fpFrtjHoUSczw7LIG9SowhhlO7SNPTmDGaD9s8R6JRGus7Vwm78ITuI/zWem4UKmCNo8W+FTIBKOcbUHM91urLTioBexf+v/dkyC42s9Q== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Update DAMON usage document for the newly added quota goal metric complement sysfs file. Signed-off-by: SJ Park --- Documentation/admin-guide/mm/damon/usage.rst | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index ba47255448564..b3f2e591fb7e4 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -98,7 +98,8 @@ comma (","). │ │ │ │ │ │ │ fail_charge_num,fail_charge_denom │ │ │ │ │ │ │ │ weights/sz_permil,nr_accesses_permil,age_permil │ │ │ │ │ │ │ │ :ref:`goals `/nr_goals - │ │ │ │ │ │ │ │ │ 0/target_metric,target_value,current_value,nid,path + │ │ │ │ │ │ │ │ │ 0/target_metric,complement,target_value, + │ │ │ │ │ │ │ │ │ current_value,nid,path │ │ │ │ │ │ │ :ref:`watermarks `/metric,interval_us,high,mid,low │ │ │ │ │ │ │ :ref:`{core_,ops_,}filters `/nr_filters │ │ │ │ │ │ │ │ 0/type,matching,allow,memcg_path,addr_start,addr_end,damon_target_idx,min,max @@ -493,11 +494,11 @@ to ``N-1``. Each directory represents each goal and current achievement. Among the multiple feedback, the best one is used. Each goal directory contains five files, namely ``target_metric``, -``target_value``, ``current_value``, ``nid``, and ``path``. Users can set and -get the five parameters for the quota auto-tuning goals that specified on the -:ref:`design doc ` by writing to and -reading from each of the files. Because the kernel does not update -``current_value``, reading it only makes sense when ``target_metric`` is +``complement``, ``target_value``, ``current_value``, ``nid``, and ``path``. +Users can set and get the six parameters for the quota auto-tuning goals that +specified on the :ref:`design doc ` by +writing to and reading from each of the files. Because the kernel does not +update ``current_value``, reading it only makes sense when ``target_metric`` is ``user_input``. Note that users should further write ``commit_schemes_quota_goals`` to the ``state`` file of the :ref:`kdamond directory ` to pass the feedback to DAMON. -- 2.47.3