Re: [PATCH 1/2] selftests/damon/_damon_sysfs: support kdamond refresh_ms

[SeongJae Park]

On Tue,  2 Jun 2026 15:12:16 +0200 Ruslan Valiyev <linuxoid@xxxxxxxxx> wrote:

> The Kdamond class has no way to set the kdamond-level 'refresh_ms' sysfs
> file, which makes DAMON periodically update the read-only sysfs files
> (DAMOS stats, tuned monitoring intervals and the kdamond pid) on its own.
> 
> Add a 'refresh_ms' parameter to Kdamond.  When it is set (including to
> zero, to disable the periodic update), write it before turning the
> kdamond on, so tests can exercise the auto-update behavior.  Leaving it
> unset keeps the previous behavior of not touching the file, so callers
> running against kernels without the feature are unaffected.

Nice addition of the feature, thank you!

> 
> Signed-off-by: Ruslan Valiyev <linuxoid@xxxxxxxxx>

Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>


Thanks,
SJ

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