Re: [PATCH v2 0/7] mm/damon: introduce probe_hits_wsum DAMOS core filter

[SJ Park <sj@kernel.org>]

On Fri, 11 Sep 2026 06:55:02 -0700 SJ Park <sj@kernel.org> wrote:

> DAMON can do flexible data attributes monitoring.  The classical data
> access monitoring can also be done using the attributes monitoring.  The
> access event is just one of the data attributes that DAMON supports.
> Users do monitoring to make some actions based on it.  DAMOS is a
> feature for automating that.  However, DAMOS cannot utilize the data
> attributes monitoring results.  It is still Data "Access"
> Monitoring-based Operation Schemes.  It requires users to set the target
> "access" pattern.
> 
> DAMOS core filter is effectively the same as the target access pattern.
> It is just a more generalized and flexible way of describing the
> operation action target region.  Introduce a new DAMOS core filter type,
> probe_hits_wsum.  It specifies the filter target based on a range of the
> probe hits weighted sum.  Using this, users can apply DAMOS actions to
> regions of specific data attributes pattern.

Sashiko found no blocker for this series but a minor documentation issue that
better to be clearified.  Because it is too trivial for reposting entire series
in my opinion, I asked Andrew to pick a fixup [1] for that together.

Sashiko send its findings to damon@ mailing list [2], and I reply those if
anything needs to be clarified.  Please refer to those for details.

[1] https://lore.kernel.org/20260911142522.98013-1-sj@kernel.org
[2] https://lore.kernel.org/damon/


Thanks,
SJ

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