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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 v3 6/7] Docs/admin-guide/mm/damon/usage: update for quota goal complement file Date: Wed, 23 Sep 2026 03:14:51 -0700 Message-ID: <20260923101454.5748-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260923101454.5748-1-sj@kernel.org> References: <20260923101454.5748-1-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: 7sbydputtpsnq67b6m4wt95t9ui3yrkq X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: B6DC1140006 X-HE-Tag: 1790158519-535560 X-HE-Meta: U2FsdGVkX1+ZmhTYrGXlzQa19t3PEk1J0+PYQecqmz4iYGKWvFJHj3LHCMOxmE8vQoap6mbB9zrfnre8CMGgrbowK1tE1LWB6JpUuCpjr0uRhoUPvZofM3d4U7ZQmYPgC0pnqrd+MdxXSJo4q0VLsMP10u/TaWFYW4DUHSUOKnDm/cNdDvpnsewYHUXQ+Eiysww8/L4brZIplKBH36uxxDV6DVyjOwheXvR4F6mu0c6intj4mBWc71HZrrIQBSgLhYbu4CxmdYcMnm7IHA0KxV5iTIJyleTGHZn2XW+DCYr/f1jZ/ZxpVbWxnxf37WPKDZiU3ZYNm+FJD7tlUHMvt5T79YQ9RSpDclZ2BR+PlBvJEgnO4S3fYFtOTeC2KMUhnAQzQum1FZlo26HeKhCoVwW8oMLqOoMaMVZINS8aRKNW8xL3OtRNuD+Y+mw/5knIwbtpAJbXJZvDaiykjlmpe3YDcZC3jKS+hounenLejQuVZI/vubuKrLTXoA/zBz5UdD39M7Eg1GVpeOCoaDpTMoKPef6CBUh+piTDSpJP/sgjBiC8QYZnRs+UOx8mc2e5gQIXFAwo/4HoO0vyRF7GPGGHArIYos1U1Rh1ScAjX/HHzRO9ApzhqUHuslK0CLlPuVRU4DWPa3XibdXxXK7MWYDz+wIa9Vh5RqR2A0pM/ZJfq/+VsNoHv2IY9TD/wrdIpQ1oSabK/fUfzyVk78s94EN8loNAL5AIiSEmsPbrnxY72+DIWYBBDv0JjaA/5ULgNb6DVVIxMzqZhmhzz+h2v3GylxU2tnuOpCWWU89XeKZ45t/hVeVfD7rtsXVpp59LtqA+hDyW4/wle4v3abyah3W6i4vXkcPjMvqPGFDx9HkHAOGpF/oxCBLItVo7wnK4RbXj9TA8MI9HP6VnSqKMnKaYkBnWJ4o+UkTTk8UXfcfoFyaKT7tTFgxwAYWh48ek/Qvp7GZfYeD3uLnwo3v UBpfH5YO jZXN7C3kIaUlJZ6uyGKzn5B7Zn1+NZLmHZJnu2paK+PIXQ+Wv6ggyej+r8d1Ctm9yXAIkir3F214B8g92NY4XFVbP+ooK14gqgLADkpbfI3XvHIoA68nDeeUyDkBGyNR2ZDKGdbbfX6vtEbOnFBmgfhHc8V3LvX9FSbjGYIryGDbHhSd8+WkbkttL9pdBpNuWTlA2N3Km1TQtfTkCd5V9dA/1JxEwDpqIy7ufzchw4ZvczurTPKJAFtCINNBEfJYkPb3HLLnc3lmPqxQtnqRTLiZjuBE2nD3ChxfBakkGC7ScbV2XaElCmIM1fA== 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