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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 v4 6/7] Docs/admin-guide/mm/damon/usage: update for quota goal complement file Date: Sun, 27 Sep 2026 05:05:30 -0700 Message-ID: <20260927120533.50484-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260927120533.50484-1-sj@kernel.org> References: <20260927120533.50484-1-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: AEF2C4000A X-Stat-Signature: 73ebmptgfm6ujh1dax6o3ohgekr8y1up X-Rspam-User: X-HE-Tag: 1790510761-389197 X-HE-Meta: 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 ztcqNXNV /Lo4uL5F72J9B25Vienr2lqEeKdJi7HutwS8zSU1OelpV/yTTKNW+27bbfgLxF4cufDDDndc4mkn2Qp+lPBFTZewPnhrctkZFNrVfUsaHarotZR8tilXIrXqmqOF+Y1Zd6eHSIAVfiPmUO0Vtew/carnyDGs3uuP/4QvAK8+5r6FoeVyCibi4TbULVHZSzKMyrW9CUhX6HRNylbmRH/Q10B+kTJrdLesL1D65UwRdCcp4y4ts3ghSmv7l5LHPNFsxAKt2QAAPgPzDmLrpBK9zsv6AeJKmKHZADGfWIdH2hm7VMoGUwjYOPyHj5A== 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 | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index ba4725544856..3d43954c7046 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 @@ -492,12 +493,12 @@ number (``N``) to the file creates the number of child directories named ``0`` 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 +Each goal directory contains six files, namely ``target_metric``, +``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