diff options
| author | SJ Park <sj@kernel.org> | 2026-07-10 06:46:31 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-04 19:18:49 -0700 |
| commit | 1138ec78dc6d9f14f7b14ed709020804f1243685 (patch) | |
| tree | d6662d89bbbe423a1ff6e34017bbd7a75f9e4e4b /include/linux | |
| parent | 37aae41c1056d44aae7988289920cdb504af6fb4 (diff) | |
mm/damon/core: ask apply_probes() ops callback to set sampling address
prepare_access_checks() DAMON ops callback sets the monitoring sampling
address per region. In future, DAMON will be able to call only
apply_probes(). In this case, applyy_probes() may need to do the sampling
address setup, to minimize unnecessary regions iteration. Update the
protocol for the request.
Link: https://lore.kernel.org/20260710134651.18084-3-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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/damon.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index d8251c83e6e5..aee28b05acc6 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -647,7 +647,8 @@ enum damon_ops_id { * It should also return max number of observed accesses that made as a result * of its update. The value will be used for regions adjustment threshold. * @apply_probes should apply the data attribute probes to each region and - * accordingly update the probe hits counter of the region. + * accordingly update the probe hits counter of the region. It should also + * set &damon_region->sampling_addr of each region if ``set_samples`` is true. * @get_scheme_score should return the priority score of a region for a scheme * as an integer in [0, &DAMOS_MAX_SCORE]. * @apply_scheme is called from @kdamond when a region for user provided @@ -665,7 +666,7 @@ struct damon_operations { void (*update)(struct damon_ctx *context); void (*prepare_access_checks)(struct damon_ctx *context); unsigned int (*check_accesses)(struct damon_ctx *context); - void (*apply_probes)(struct damon_ctx *context); + void (*apply_probes)(struct damon_ctx *context, bool set_samples); int (*get_scheme_score)(struct damon_ctx *context, struct damon_region *r, struct damos *scheme); unsigned long (*apply_scheme)(struct damon_ctx *context, |