diff options
| author | SeongJae Park <sj@kernel.org> | 2026-01-18 10:02:57 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-01-31 14:22:48 -0800 |
| commit | 652fd06d20da688d6c37cb33efc38a249fce11a3 (patch) | |
| tree | a03d40e940726928a879307cbc6a1bc0eaa83991 /Documentation/admin-guide | |
| parent | e7df7a0bfc9090f83e9a2f40905bdfc58097330d (diff) | |
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.
Link: https://lkml.kernel.org/r/20260118180305.70023-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 11 |
1 files 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: |