diff options
| author | SeongJae Park <sj@kernel.org> | 2025-07-16 22:54:47 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-24 19:12:33 -0700 |
| commit | e85e965bdbec7ebee62c9a843d31175e6cf60052 (patch) | |
| tree | 56129209b3d0773e34e99ccfc15e5941e6e41391 | |
| parent | d809a7c64ba8229286b333c0cba03b1cdfb50238 (diff) | |
Docs/admin-guide/mm/damon/usage: document refresh_ms file
Document the new DAMON sysfs file, refresh_ms, on the usage document.
Link: https://lkml.kernel.org/r/20250717055448.56976-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index fc5c962353edb..ff3a2dda1f02d 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -59,7 +59,7 @@ comma (","). :ref:`/sys/kernel/mm/damon <sysfs_root>`/admin │ :ref:`kdamonds <sysfs_kdamonds>`/nr_kdamonds - │ │ :ref:`0 <sysfs_kdamond>`/state,pid + │ │ :ref:`0 <sysfs_kdamond>`/state,pid,refresh_ms │ │ │ :ref:`contexts <sysfs_contexts>`/nr_contexts │ │ │ │ :ref:`0 <sysfs_context>`/avail_operations,operations │ │ │ │ │ :ref:`monitoring_attrs <sysfs_monitoring_attrs>`/ @@ -123,8 +123,8 @@ kdamond. kdamonds/<N>/ ------------- -In each kdamond directory, two files (``state`` and ``pid``) and one directory -(``contexts``) exist. +In each kdamond directory, three files (``state``, ``pid`` and ``refresh_ms``) +and one directory (``contexts``) exist. Reading ``state`` returns ``on`` if the kdamond is currently running, or ``off`` if it is not running. @@ -161,6 +161,13 @@ Users can write below commands for the kdamond to the ``state`` file. If the state is ``on``, reading ``pid`` shows the pid of the kdamond thread. +Users can ask the kernel to periodically update files showing auto-tuned +parameters and DAMOS stats instead of manually writing +``update_tuned_intervals`` like keywords to ``state`` file. For this, users +should write the desired update time interval in milliseconds to ``refresh_ms`` +file. If the interval is zero, the periodic update is disabled. Reading the +file shows currently set time interval. + ``contexts`` directory contains files for controlling the monitoring contexts that this kdamond will execute. |