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mm/damon/sysfs: setup probes on DAMON core API parameters

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Add user-installed data probes to DAMON core API parameters, so that user
inputs for data probes are passed to DAMON core.

Link: https://lore.kernel.org/20260518234119.97569-15-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 16:41:02 -07:00 committed by Andrew Morton
parent 8caba14482
commit 24e969aa29
1 changed files with 37 additions and 0 deletions
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37
mm/damon/sysfs.c
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@ -1855,6 +1855,40 @@ static int damon_sysfs_set_attrs(struct damon_ctx *ctx,
return damon_set_attrs(ctx, &attrs);
}
static int damon_sysfs_set_probes(struct damon_ctx *ctx,
struct damon_sysfs_probes *sys_probes)
{
int i;
for (i = 0; i < sys_probes->nr; i++) {
struct damon_sysfs_filters *sys_filters =
sys_probes->probes_arr[i]->filters;
struct damon_probe *c;
int j;
if (!sys_filters)
continue;
c = damon_new_probe();
if (!c)
return -ENOMEM;
damon_add_probe(ctx, c);
for (j = 0; j < sys_filters->nr; j++) {
struct damon_sysfs_filter *sys_filter =
sys_filters->filters_arr[j];
struct damon_filter *filter;
filter = damon_new_filter(sys_filter->type,
sys_filter->matching,
sys_filter->allow);
if (!filter)
return -ENOMEM;
damon_add_filter(c, filter);
}
}
return 0;
}
static int damon_sysfs_set_regions(struct damon_target *t,
struct damon_sysfs_regions *sysfs_regions,
unsigned long min_region_sz)
@ -1967,6 +2001,9 @@ static int damon_sysfs_apply_inputs(struct damon_ctx *ctx,
DAMON_MIN_REGION_SZ / sys_ctx->addr_unit, 1);
ctx->pause = sys_ctx->pause;
err = damon_sysfs_set_attrs(ctx, sys_ctx->attrs);
if (err)
return err;
err = damon_sysfs_set_probes(ctx, sys_ctx->attrs->probes);
if (err)
return err;
err = damon_sysfs_add_targets(ctx, sys_ctx->targets);