From: SJ Park <sj@kernel.org>
Cc: SJ Park <sj@kernel.org>, "Liam R. Howlett" <liam@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Lorenzo Stoakes <ljs@kernel.org>, Michal Hocko <mhocko@suse.com>,
Mike Rapoport <rppt@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Suren Baghdasaryan <surenb@google.com>,
Vlastimil Babka <vbabka@kernel.org>,
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 [thread overview]
Message-ID: <20260918142827.85303-7-sj@kernel.org> (raw)
In-Reply-To: <20260918142827.85303-1-sj@kernel.org>
Update DAMON usage document for the newly added quota goal metric
complement sysfs file.
Signed-off-by: SJ Park <sj@kernel.org>
---
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 <sysfs_schemes_quota_goals>`/nr_goals
- │ │ │ │ │ │ │ │ │ 0/target_metric,target_value,current_value,nid,path
+ │ │ │ │ │ │ │ │ │ 0/target_metric,complement,target_value,
+ │ │ │ │ │ │ │ │ │ current_value,nid,path
│ │ │ │ │ │ │ :ref:`watermarks <sysfs_watermarks>`/metric,interval_us,high,mid,low
│ │ │ │ │ │ │ :ref:`{core_,ops_,}filters <sysfs_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 <damon_design_damos_quotas_auto_tuning>` 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 <damon_design_damos_quotas_auto_tuning>` 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 <sysfs_kdamond>` to pass the feedback to DAMON.
--
2.47.3
next prev parent reply other threads:[~2026-09-18 14:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-18 14:28 [RFC PATCH 0/7] mm/damon: introduce damos quota goal target metric complement flag SJ Park
2026-09-18 14:28 ` [RFC PATCH 1/7] mm/damon/core: introduce damos_quota_goal->complement SJ Park
2026-09-18 14:28 ` [RFC PATCH 2/7] mm/damon: add complement argument to damos_new_quota_goal() SJ Park
2026-09-18 14:28 ` [RFC PATCH 3/7] mm/damon/sysfs-schemes: support quota goal complement flag SJ Park
2026-09-18 14:28 ` [RFC PATCH 4/7] mm/damon/tests/core-kunit: test quota_goal->complement commit SJ Park
2026-09-18 14:28 ` [RFC PATCH 5/7] Docs/mm/damon/design: document damos quota goal complement flag SJ Park
2026-09-18 14:28 ` SJ Park [this message]
2026-09-18 14:28 ` [RFC PATCH 7/7] Docs/ABI/damon: update for quota goal metric complement sysfs file SJ Park
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260918142827.85303-7-sj@kernel.org \
--to=sj@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=damon@lists.linux.dev \
--cc=david@kernel.org \
--cc=liam@infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=mhocko@suse.com \
--cc=rdunlap@infradead.org \
--cc=rppt@kernel.org \
--cc=skhan@linuxfoundation.org \
--cc=surenb@google.com \
--cc=vbabka@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®