linux-kernel - [PATCH 6/8] Docs/admin-guide/mm/damon/usage: update stats update process for refresh

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Message-ID: <20260118180305.70023-7-sj@kernel.org>
Date: Sun, 18 Jan 2026 10:02:57 -0800
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	David Hildenbrand <david@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Michal Hocko <mhocko@...e.com>,
	Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	damon@...ts.linux.dev,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 6/8] Docs/admin-guide/mm/damon/usage: update stats update process for refresh_ms

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@...nel.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