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Docs/ABI/damon: document probe files

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DAMON ABI document is not updated for the DAMON probe sysfs files. 
Update.

Link: https://lore.kernel.org/20260630141726.92246-3-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
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: Shuah Khan <shuah@kernel.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:
SJ Park 2026-06-30 07:17:16 -07:00 committed by Andrew Morton
parent 6eceb61256
commit fb6e06631d
1 changed files with 40 additions and 0 deletions
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Documentation/ABI/testing/sysfs-kernel-mm-damon
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@ -157,6 +157,46 @@ Description: Writing a value to this file sets the maximum number of
monitoring regions of the DAMON context as the value. Reading
this file returns the value.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/nr_probes
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: Writing a number 'N' to this file creates the number of
directories for each DAMON probe named '0' to 'N-1' under the
probes/ directory.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/<P>/filters/nr_filters
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: Writing a number 'N' to this file creates the number of
directories for each DAMON probe filter named '0' to 'N-1'
under the filters/ directory.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/<P>/filters/<F>/type
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: Writing to and reading from this file sets and gets the type of
the memory of the interest.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/<P>/filters/<F>/path
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: If 'memcg' is written to the 'type' file, writing to and
reading from this file sets and gets the path to the memory
cgroup of the interest.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/<P>/filters/<F>/matching
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: Writing 'Y' or 'N' to this file sets whether the filter is for
the memory of the 'type', or all except the 'type'.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/probes/<P>/filters/<F>/allow
Date: May 2026
Contact: SJ Park <sj@kernel.org>
Description: Writing 'Y' or 'N' to this file sets whether to allow or reject
hitting the probe for the memory that satisfies the 'type' and
the 'matching' of the directory.
What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/nr_targets
Date: Mar 2022
Contact: SJ Park <sj@kernel.org>