mm/damon/vaddr: use damos->migrate_dests in migrate_{hot,cold}

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damos->migrate_dests provides a list of nodes the migrate_{hot,cold}
actions should migrate to, as well as the weights which specify the ratio
pages should be migrated to each destination node.

This patch interleaves pages in the migrate_{hot,cold} actions according
to the information provided in damos->migrate_dests if it is used.  The
interleaving algorithm used is similar to the one used in
weighted_interleave_nid().  If damos->migration_dests is not provided, the
actions migrate pages to the node specified in damos->target_nid as
before.

Link: https://lkml.kernel.org/r/20250709005952.17776-12-bijan311@gmail.com
Co-developed-by: Ravi Shankar Jonnalagadda <ravis.opensrc@micron.com>
Signed-off-by: Ravi Shankar Jonnalagadda <ravis.opensrc@micron.com>
Signed-off-by: Bijan Tabatabai <bijantabatab@micron.com>
Reviewed-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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Bijan Tabatabai 2025-07-08 19:59:41 -05:00 • committed by Andrew Morton

parent 0af934b131

commit 19c1dc15c8

1 changed files with 92 additions and 16 deletions

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mm/damon/vaddr.c

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