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From: SeongJae Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: SeongJae Park <sj@kernel.org>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	David Hildenbrand <david@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	Michal Hocko <mhocko@suse.com>, Mike Rapoport <rppt@kernel.org>,
	Suren Baghdasaryan <surenb@google.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	damon@lists.linux.dev, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 6/8] Docs/admin-guide/mm/damon/usage: update stats update process for refresh_ms
Date: Sun, 18 Jan 2026 10:02:57 -0800	[thread overview]
Message-ID: <20260118180305.70023-7-sj@kernel.org> (raw)
In-Reply-To: <20260118180305.70023-1-sj@kernel.org>

DAMOS stats on sysfs was only manually updated.  Recent addition of
'refresh_ms' knob enabled periodic and automated updates of the stats.
The document for stats update process is not updated for the change,
however.  Update.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/admin-guide/mm/damon/usage.rst | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index bfaee977c37c..b0f3969b6b3b 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -549,10 +549,13 @@ online analysis or tuning of the schemes.  Refer to :ref:`design doc
 The statistics can be retrieved by reading the files under ``stats`` directory
 (``nr_tried``, ``sz_tried``, ``nr_applied``, ``sz_applied``,
 ``sz_ops_filter_passed``, ``qt_exceeds``, ``nr_snapshots`` and
-``max_nr_snapshots``), respectively.  The files are not updated in real time,
-so you should ask DAMON sysfs interface to update the content of the files for
-the stats by writing a special keyword, ``update_schemes_stats`` to the
-relevant ``kdamonds/<N>/state`` file.
+``max_nr_snapshots``), respectively.
+
+The files are not updated in real time by default.  Users should ask DAMON
+sysfs interface to periodically update those using ``refresh_ms``, or do a one
+time update by writing a special keyword, ``update_schemes_stats`` to the
+relevant ``kdamonds/<N>/state`` file.  Refer to :ref:`kdamond directory
+<sysfs_kdamond>` for more details.
 
 .. _sysfs_schemes_tried_regions:
 
-- 
2.47.3

  parent reply	other threads:[~2026-01-18 18:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-18 18:02 [PATCH 0/8] Docs/mm/damon: update intro, modules, maintainer profile, and misc SeongJae Park
2026-01-18 18:02 ` [PATCH 1/8] Docs/mm/damon/index: simplify the intro SeongJae Park
2026-01-18 18:02 ` [PATCH 2/8] Docs/mm/damon/design: link repology instead of Fedora package SeongJae Park
2026-01-18 18:02 ` [PATCH 3/8] Docs/mm/damon/design: document DAMON sample modules SeongJae Park
2026-01-18 18:02 ` [PATCH 4/8] Docs/mm/damon/design: add reference to DAMON_STAT usage SeongJae Park
2026-01-18 18:02 ` [PATCH 5/8] Docs/admin-guide/mm/damon/usage: introduce DAMON modules at the beginning SeongJae Park
2026-01-18 18:02 ` SeongJae Park [this message]
2026-01-18 18:02 ` [PATCH 7/8] Docs/mm/damon/maintainer-profile: fix wrong MAITNAINERS section name SeongJae Park
2026-01-18 18:02 ` [PATCH 8/8] Docs/mm/damon/maintainer-profile: remove damon-tests/perf suggestion SeongJae Park

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