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| author | SJ Park <sj@kernel.org> | 2026-09-01 06:25:03 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-09-29 23:12:03 -0700 |
| commit | 3a501c7b19ce980c04cfc757ab052f5e36615d22 (patch) | |
| tree | 99ee92329ac6cbd3f4d20f9d7001e00491c212e2 /Documentation/admin-guide | |
| parent | 6b3f3e5e1fb57a3854f8c53c0919d786a7029375 (diff) | |
| download | linux-next-3a501c7b19ce980c04cfc757ab052f5e36615d22.tar.gz linux-next-3a501c7b19ce980c04cfc757ab052f5e36615d22.zip | |
Docs/admin-guide/mm/damon/usage: document probe preps sysfs files
Update DAMON usage document for the newly added DAMON probe preps sysfs
files.
Link: https://lore.kernel.org/20260901132506.99243-17-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index da5f9afd08ae..023c6334024f 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -74,6 +74,9 @@ comma (","). │ │ │ │ │ │ nr_regions/min,max │ │ │ │ │ │ :ref:`probes <damon_usage_sysfs_probes>`/nr_probes │ │ │ │ │ │ │ 0/weight + │ │ │ │ │ │ │ │ preps/nr_preps + │ │ │ │ │ │ │ │ │ 0/prep_action + │ │ │ │ │ │ │ │ │ ... │ │ │ │ │ │ │ │ filters/nr_filters │ │ │ │ │ │ │ │ │ 0/type,matching,allow,path │ │ │ │ │ │ │ │ │ ... @@ -283,9 +286,18 @@ In the beginning, this directory has only one file, ``nr_probes``. Writing a number (``N``) to the file creates the number of child directories named ``0`` to ``N-1``. Each directory represents each monitoring probe. -In each probe directory, one directory, ``filters`` exists. The directory -contains files for installing filters for the probe, that is used to determine -the data attribute for the probe. +In each probe directory, two directories, ``preps`` and ``filters`` exist. The +directories contain files for installing probing preparation actions and +filters for the probe, that are used to determine the data attribute for the +probe. + +In the beginning, ``preps`` directory has only one file, ``nr_preps``. +Writing a number (``N``) to the file creates the number of child directories +named ``0`` to ``N-1``. Each directory represents each preparation action. +Each directory has one file, ``prep_action``. The preparation action can be +selected by writing the name of the action to the ``prep_action`` file. Refer +to the :ref:`design doc <damon_design_data_attrs_monitoring>` for the list of +supported actions. Each probe directory also contains ``weight`` file. Reading from and writing to the file gets and sets the :ref:`attributes-only monitoring |