diff --git a/mm/damon/core.c b/mm/damon/core.c
index 66d8e9b1adcf..c8c2e4660b98 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -2452,8 +2452,6 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
 	struct damon_target *t;
 	struct damon_region *r;
 	struct damos *s;
-	unsigned long sample_interval = c->attrs.sample_interval ?
-		c->attrs.sample_interval : 1;
 	bool has_schemes_to_apply = false;
 
 	damon_for_each_scheme(s, c) {
@@ -2484,9 +2482,7 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
 		if (c->passed_sample_intervals < s->next_apply_sis)
 			continue;
 		damos_walk_complete(c, s);
-		s->next_apply_sis = c->passed_sample_intervals +
-			(s->apply_interval_us ? s->apply_interval_us :
-			 c->attrs.aggr_interval) / sample_interval;
+		damos_set_next_apply_sis(s, c);
 		s->last_applied = NULL;
 		damos_trace_stat(c, s);
 	}
@@ -2864,7 +2860,6 @@ static void kdamond_init_ctx(struct damon_ctx *ctx)
 {
 	unsigned long sample_interval = ctx->attrs.sample_interval ?
 		ctx->attrs.sample_interval : 1;
-	unsigned long apply_interval;
 	struct damos *scheme;
 
 	ctx->passed_sample_intervals = 0;
@@ -2875,9 +2870,7 @@ static void kdamond_init_ctx(struct damon_ctx *ctx)
 		ctx->attrs.intervals_goal.aggrs;
 
 	damon_for_each_scheme(scheme, ctx) {
-		apply_interval = scheme->apply_interval_us ?
-			scheme->apply_interval_us : ctx->attrs.aggr_interval;
-		scheme->next_apply_sis = apply_interval / sample_interval;
+		damos_set_next_apply_sis(scheme, ctx);
 		damos_set_filters_default_reject(scheme);
 	}
 }