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Docs/admin-guide/mm/damon/usage: update for max_nr_snapshots

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Update DAMON usage document for the newly added DAMON sysfs interface
file, max_nr_snapshots.

Link: https://lkml.kernel.org/r/20251216080128.42991-11-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
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: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park
2025-12-16 00:01:23 -08:00
committed by Andrew Morton
parent 64aa87f03d
commit 2584dd7496
1 changed files with 6 additions and 5 deletions
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11
Documentation/admin-guide/mm/damon/usage.rst
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@@ -87,7 +87,7 @@ comma (",").
│ │ │ │ │ │ │ │ 0/type,matching,allow,memcg_path,addr_start,addr_end,target_idx,min,max
│ │ │ │ │ │ │ :ref:`dests <damon_sysfs_dests>`/nr_dests
│ │ │ │ │ │ │ │ 0/id,weight
│ │ │ │ │ │ │ :ref:`stats <sysfs_schemes_stats>`/nr_tried,sz_tried,nr_applied,sz_applied,sz_ops_filter_passed,qt_exceeds,nr_snapshots
│ │ │ │ │ │ │ :ref:`stats <sysfs_schemes_stats>`/nr_tried,sz_tried,nr_applied,sz_applied,sz_ops_filter_passed,qt_exceeds,nr_snapshots,max_nr_snapshots
│ │ │ │ │ │ │ :ref:`tried_regions <sysfs_schemes_tried_regions>`/total_bytes
│ │ │ │ │ │ │ │ 0/start,end,nr_accesses,age,sz_filter_passed
│ │ │ │ │ │ │ │ ...
@@ -543,10 +543,11 @@ 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`` and ``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.
``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.
.. _sysfs_schemes_tried_regions: