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mm/damon/core: do data attributes monitoring

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Implement the data attributes monitoring execution.  Update kdamond to
invoke the probes application callback, and reset the aggregated number of
per-region per-probe positive samples for every aggregation interval.

Link: https://lore.kernel.org/20260518234119.97569-8-sj@kernel.org
Signed-off-by: SeongJae 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: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.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:
SeongJae Park 2026-05-18 16:40:55 -07:00 committed by Andrew Morton
parent 1a9e847589
commit 9b1f8c8d01
1 changed files with 6 additions and 0 deletions
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6
mm/damon/core.c
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@ -1910,10 +1910,14 @@ static void kdamond_reset_aggregated(struct damon_ctx *c)
struct damon_region *r;
damon_for_each_region(r, t) {
int i;
trace_damon_aggregated(ti, r, damon_nr_regions(t));
damon_warn_fix_nr_accesses_corruption(r);
r->last_nr_accesses = r->nr_accesses;
r->nr_accesses = 0;
for (i = 0; i < DAMON_MAX_PROBES; i++)
r->probe_hits[i] = 0;
damon_verify_reset_aggregated(r, c);
}
ti++;
@ -3407,6 +3411,8 @@ static int kdamond_fn(void *data)
if (ctx->ops.check_accesses)
max_nr_accesses = ctx->ops.check_accesses(ctx);
if (ctx->ops.apply_probes)
ctx->ops.apply_probes(ctx);
if (time_after_eq(ctx->passed_sample_intervals,
next_aggregation_sis)) {