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Docs/admin-guide/mm/damon/usage: update for memcg damon filter

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Update DAMON usage document for the newly added belonging memory cgroup
attribute monitoring feature.

Link: https://lore.kernel.org/20260518234119.97569-29-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 R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2026-05-18 16:41:16 -07:00 committed by Andrew Morton
parent 2fd777ebdf
commit 9d3678808a
1 changed files with 4 additions and 2 deletions
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6
Documentation/admin-guide/mm/damon/usage.rst
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@ -74,7 +74,7 @@ comma (",").
│ │ │ │ │ │ nr_regions/min,max
│ │ │ │ │ │ :ref:`probes <damon_usage_sysfs_probes>`/nr_probes
│ │ │ │ │ │ │ 0/filters/nr_filters
│ │ │ │ │ │ │ │ 0/type,matching,allow
│ │ │ │ │ │ │ │ 0/type,matching,allow,path
│ │ │ │ │ │ │ │ ...
│ │ │ │ │ │ │ ...
│ │ │ │ │ :ref:`targets <sysfs_targets>`/nr_targets
@ -289,7 +289,9 @@ the data attribute for the probe.
In the beginning, ``filters`` directory has only one file, ``nr_filters``.
Writing a number (``N``) to the file creates the number of child directories
named ``0`` to ``N-1``. Each directory represents each filter and works in a
way similar to that for :ref:`DAMOS filter <sysfs_filters>`.
way similar to that for :ref:`DAMOS filter <sysfs_filters>`. When the filter
``type`` is ``memcg``, ``path`` file acts as ``memcg_path`` for :ref:`DAMOS
filter <sysfs_filters>`.
.. _sysfs_targets: