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mm/damon/sysfs: support hugepage_size probe filter

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Extend DAMON sysfs interface to support hugepage_size probe filter. 
Allows hugepage_size user string input to the filter type file.  Pass the
size range argument that users set via min/max files under the probe
filter directory to the DAMON core.

Link: https://lore.kernel.org/20260915143359.91472-6-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@kernel.org>
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>
This commit is contained in:
SJ Park 2026-09-15 07:33:54 -07:00 committed by Andrew Morton
parent e63813b893
commit 270b82dc6f
1 changed files with 7 additions and 0 deletions
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7
mm/damon/sysfs.c
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@ -1007,6 +1007,10 @@ damon_sysfs_filter_type_names[] = {
.type = DAMON_FILTER_TYPE_PGIDLE_SET,
.name = "pgidle_set",
},
{
.type = DAMON_FILTER_TYPE_HUGEPAGE_SIZE,
.name = "hugepage_size",
},
};
static ssize_t type_show(struct kobject *kobj,
@ -2273,6 +2277,9 @@ static int damon_sysfs_set_filters(struct damon_probe *probe,
damon_destroy_filter(filter);
return err;
}
} else if (filter->type == DAMON_FILTER_TYPE_HUGEPAGE_SIZE) {
filter->range_min = sys_filter->range_min;
filter->range_max = sys_filter->range_max;
}
damon_add_filter(probe, filter);
}