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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 v2 6/7] Docs/admin-guide/mm/damon/usage: update for quota goal complement file Date: Fri, 18 Sep 2026 18:13:55 -0700 Message-ID: <20260919011359.88921-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260919011359.88921-1-sj@kernel.org> References: <20260919011359.88921-1-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 990A9180009 X-Stat-Signature: dn81sskjcsbtzyjehf7qzk15k1wp5ckj X-Rspam-User: X-HE-Tag: 1789780451-854760 X-HE-Meta: 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 jihKoHYX nelxzAVF6mKOeKlP1hlvJWlD8xApOCEN9xFN8ZmmcRMgV/BcySNlNHpRLW93sFGQXtYVefGid/4o6t20HuxTfspXLjgLjAJOjs3jaVSIgq3ce3KJHRXLbd2C8jlmH6S7+HCWAm2w4vBjDPwfHEnME8BCLsb/3JW+ti40XQnA5lHpPp5KcOI0J8582wL04lQVEhkCAAPSfkqAr2PN61rXwI3I65dwY51zi8+1l4aJl2YF2C43cip4ggVD6NuDL+IrBbZxgELq9mfpJ0jAZEk2s3yDHB3nqxMP3CdmAiOfIJP+Qiekhtf3fI6Upsg== 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 ba47255448564..3d43954c7046c 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