1 files changed, 39 insertions, 0 deletions

diff --git a/mm/damon/core.c b/mm/damon/core.c
index ceec75b88ef9..1bf0654ae189 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -263,6 +263,40 @@ int damon_set_regions(struct damon_target *t, struct damon_addr_range *ranges,
 	return 0;
 }
 
+struct damos_filter *damos_new_filter(enum damos_filter_type type,
+		bool matching)
+{
+	struct damos_filter *filter;
+
+	filter = kmalloc(sizeof(*filter), GFP_KERNEL);
+	if (!filter)
+		return NULL;
+	filter->type = type;
+	filter->matching = matching;
+	return filter;
+}
+
+void damos_add_filter(struct damos *s, struct damos_filter *f)
+{
+	list_add_tail(&f->list, &s->filters);
+}
+
+static void damos_del_filter(struct damos_filter *f)
+{
+	list_del(&f->list);
+}
+
+static void damos_free_filter(struct damos_filter *f)
+{
+	kfree(f);
+}
+
+void damos_destroy_filter(struct damos_filter *f)
+{
+	damos_del_filter(f);
+	damos_free_filter(f);
+}
+
 /* initialize private fields of damos_quota and return the pointer */
 static struct damos_quota *damos_quota_init_priv(struct damos_quota *quota)
 {
@@ -287,6 +321,7 @@ struct damos *damon_new_scheme(struct damos_access_pattern *pattern,
 		return NULL;
 	scheme->pattern = *pattern;
 	scheme->action = action;
+	INIT_LIST_HEAD(&scheme->filters);
 	scheme->stat = (struct damos_stat){};
 	INIT_LIST_HEAD(&scheme->list);
 
@@ -315,6 +350,10 @@ static void damon_free_scheme(struct damos *s)
 
 void damon_destroy_scheme(struct damos *s)
 {
+	struct damos_filter *f, *next;
+
+	damos_for_each_filter_safe(f, next, s)
+		damos_destroy_filter(f);
 	damon_del_scheme(s);
 	damon_free_scheme(s);
 }