mm/damon/sysfs: implement a command to update auto-tuned monitoring intervals

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DAMON kernel API callers can show auto-tuned sampling and aggregation
intervals from the monmitoring attributes data structure.  That can be
useful for debugging or tuning of the feature.  DAMON user-space ABI users
has no way to see that, though.  Implement a new DAMON sysfs interface
command, namely 'update_tuned_intervals', for the purpose.  If the command
is written to the kdamond state file, the tuned sampling and aggregation
intervals will be updated to the corresponding sysfs interface files.

Link: https://lkml.kernel.org/r/20250303221726.484227-6-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>

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SeongJae Park 2025-03-03 14:17:23 -08:00 • committed by Andrew Morton

parent 0622c68d0a

commit 1077605396

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mm/damon/sysfs.c

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