mm/damon/core: get merge threshold from probe hits when weights are set

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When probe weights are set, DAMON merges regions based on their probe hits
weighted sum.  But the merge threshold is calculated based on the access
frequency.  Update it to retrieve the maximum probe hits weighted sum in
the snapshot from apply_probes() ops callback, and generate the threshold
based on it.

Link: https://lore.kernel.org/20260710134651.18084-15-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
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: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

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SJ Park 2026-07-10 06:46:43 -07:00 • committed by Andrew Morton

parent b9bc678bfb

commit db697312bb

1 changed files with 14 additions and 4 deletions

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mm/damon/core.c

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