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mm/damon/core: disable access monitoring when probe weights are set

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When users set probe weights, they are interested in the data attributes. 
Not necessarily they are interested in data access patterns.  Disable the
data access monitoring in the case.

Link: https://lore.kernel.org/20260710134651.18084-12-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>
This commit is contained in:
SJ Park
2026-07-10 06:46:40 -07:00
committed by Andrew Morton
parent 23c0623f80
commit 05c978da7f
1 changed files with 3 additions and 2 deletions
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5
mm/damon/core.c
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@@ -3763,17 +3763,18 @@ static int kdamond_fn(void *data)
unsigned long next_aggregation_sis = ctx->next_aggregation_sis;
unsigned long next_ops_update_sis = ctx->next_ops_update_sis;
unsigned long sample_interval = ctx->attrs.sample_interval;
bool access_check_disabled = damon_has_probe_weights(ctx);
if (kdamond_wait_activation(ctx))
break;
if (ctx->ops.prepare_access_checks)
if (!access_check_disabled && ctx->ops.prepare_access_checks)
ctx->ops.prepare_access_checks(ctx);
kdamond_usleep(sample_interval);
ctx->passed_sample_intervals++;
if (ctx->ops.check_accesses)
if (!access_check_disabled && ctx->ops.check_accesses)
max_nr_accesses = ctx->ops.check_accesses(ctx);
if (ctx->ops.apply_probes)
ctx->ops.apply_probes(ctx, false, false);