Re: [PATCH 0/2] selftests/damon: test kdamond refresh_ms

[SeongJae Park <sj@kernel.org>]

On Tue,  2 Jun 2026 15:12:15 +0200 Ruslan Valiyev <linuxoid@gmail.com> wrote:

> The kdamond 'refresh_ms' sysfs file makes DAMON periodically update its
> read-only sysfs files (DAMOS stats, tuned monitoring intervals and the
> kdamond pid) on its own, so users don't have to write update keywords
> such as 'update_schemes_stats' to the 'state' file.  It has no selftest
> coverage.
> 
> The first patch adds refresh_ms support to the _damon_sysfs.py test
> control module.  The second adds a test that sets refresh_ms and confirms
> a scheme's stats are updated under sysfs without an explicit update
> request; the test skips on kernels that predate the refresh_ms file.
> 
> Tested on current mainline under a DAMON-enabled kernel: the new test
> passes and the existing DAMON selftests show no new failures.

Thank you for this great contribution, Ruslan! :)

All patches look good.  I therefore added this sereis to damon/next [1] tree.
If this series is not added to mm.git in short term (~1 week?), I will ask
mm.git maintainer (Andrew Morton) to pick this.

Andrew might want us to wait until next rc1 release, though, as
apparently now we want to keep more time on stabilizing mm.git for the next
merge window.  Andrew, please let me know if so.

So, no action from your side is needed for now.  If it seems I
also forgot doing that or you cannot wait for my action, please feel free to
directly ask that to Andrew.

[1] https://origin.kernel.org/doc/html/latest/mm/damon/maintainer-profile.html#scm-trees


Thanks,
SJ

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