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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 v5 7/8] Docs/admin-guide/mm/damon/usage: update for quota goal complement file Date: Mon, 28 Sep 2026 02:33:39 -0700 Message-ID: <20260928093342.16584-8-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260928093342.16584-1-sj@kernel.org> References: <20260928093342.16584-1-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: e5rzetfksidpwcck3i87tzfdbr18gk4k X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: E8BFC40007 X-HE-Tag: 1790588050-223159 X-HE-Meta: U2FsdGVkX1/WMiyIuqH5TqmLl49EoxRCC8qRGZyBZhe8kpP9izRb/XfU+1JOmccnW9QiQt4X7MBAWGne9n8QoBMt2OyZ9eJuq0fuyx8YJ/sAVnHD0LQ93aqsZOoej1+M0HS3x8d66FjwGuIFtUQuY/GXMP+8yyEzT6sFpKH5PMY5fhfnCpaI+BjTlRLkzdBrN0bbdkEPEaGnHsHCmvHAm+kZccnpWF0HXt9msMqJ3/cX2HdDR8dz1hjNjC2OULDZ4LG3qukWeTO07HU6Vh1IhB4mQBrXtrbpiXtRlZeNOPSWzVClgkkSbPQkzQRQD0gkiV0Og7Ry3SwqfSz/NoQNpTSDc+gIn4DYFeToLy07VpR48vmExggVFh91LEA3+a6Y5ZvTLshdpLHYZALmKHiUOl7mG0QIyKGa+98RMcLkK0t+1sXNTfCwf5iYlh4KpKHgEaQpi8eSilEx+ZoV1HXHkLzaXwiAndxVrEwmPPmSv79/WmlKl0Xkv6o6f6rZfMDEx+10xogtz7MQ6lbxP3jgDyXl4ZeIRpOiXFl7MSZQZzyfZS/g29L+9o6rokTrb1P3Z3i4m202/f0x+JmNiuhasYv0oR8WF7TUkWkWNPZjttuqDARhq//+awmELu1KcgZUnjUmKRUKIfGII5eNxDs987psIUEjzgNfARoIqPmd1DI46pgLAPMjpJcGUhyliVFDOEHF4H+vVKiQoCYDKZJ2oCg4KjTM4kbC08e11cS9ZL7YR+ZijmPl8SJalIHB/fT+G0Nsw+Cx8uqRSRIB96mLi4UjexrmAAary1ELRM4pZgsHlLHQEdnz4gmCWOTsViAyEXbJ0myN5/ts3cVBelFghrc4puzyPHAKG1l7VtFwT3X8stTdkNqA13yuEDt7+OZ9T4oOdGnWNyp2mabPqrjCjuJSJReyOoD8Pn/4gLmcTmm/uZe5owO1Fr++L1ZSbiM06/j3/kh63dr99Oqjh8q zD6lA6aB 1X3gzgSBC8Nki58OV8RXXnmJFhH2CC+Q6nelJvMFW6VYSWrDQlRNO9sWHr4l0XPYg8bZOA+S7NMwtucyLSBmEJ9KSWS+bwsMFIBTHHZdazPLOXPW9DAJyFlV1fEmvJinxoPnfYP/4TH5lFED+QLaDDogtLcDoKYN62JdQzS3OSwa5en41OeyNCmrd2cWwrEeYju4g/z6dcGbBc0F96DSEt0zQ14IdYXGfUoNogRvAsP2fearclWnk4fa3bFclLZSHA9xLunlPsuOpRkOyuvjSLb16G93iPl4R4VcTN71A/w4mkwnMCG/WVtv99A== 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