[RFC PATCH 1/6] mm/damon/tests/core-kunit: test damon_commit_filter()

[SJ Park <sj@kernel.org>]

Add kunit test to ensure damon_commit_filter() updates destination
filter as expected for valid inputs.

Signed-off-by: SJ Park <sj@kernel.org>
---
 mm/damon/tests/core-kunit.h | 40 +++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h
index c7bda8aadef3f..ff864402e9c75 100644
--- a/mm/damon/tests/core-kunit.h
+++ b/mm/damon/tests/core-kunit.h
@@ -1354,6 +1354,45 @@ static void damon_test_commit_target_regions(struct kunit *test)
 			(unsigned long[][2]) {{3, 8}, {8, 10}}, 2);
 }
 
+static void damon_test_commit_filter_for(struct kunit *test,
+		struct damon_filter *dst, struct damon_filter *src)
+{
+	damon_commit_filter(dst, src);
+	KUNIT_EXPECT_EQ(test, dst->type, src->type);
+	KUNIT_EXPECT_EQ(test, dst->matching, src->matching);
+	KUNIT_EXPECT_EQ(test, dst->allow, src->allow);
+	switch (src->type) {
+	case DAMOS_FILTER_TYPE_MEMCG:
+		KUNIT_EXPECT_EQ(test, dst->memcg_id, src->memcg_id);
+		break;
+	default:
+		break;
+	}
+}
+
+static void damon_test_commit_filter(struct kunit *test)
+{
+	struct damon_filter dst = {
+		.type = DAMON_FILTER_TYPE_ANON,
+		.matching = false,
+		.allow = false,
+	};
+
+	damon_test_commit_filter_for(test, &dst,
+			&(struct damon_filter){
+			.type = DAMON_FILTER_TYPE_ANON,
+			.matching = true,
+			.allow = true,
+			});
+	damon_test_commit_filter_for(test, &dst,
+			&(struct damon_filter){
+			.type = DAMON_FILTER_TYPE_MEMCG,
+			.matching = false,
+			.allow = false,
+			.memcg_id = 123,
+			});
+}
+
 static void damon_test_commit_ctx(struct kunit *test)
 {
 	struct damon_ctx *src, *dst;
@@ -1705,6 +1744,7 @@ static struct kunit_case damon_test_cases[] = {
 	KUNIT_CASE(damos_test_commit_pageout),
 	KUNIT_CASE(damos_test_commit_migrate_hot),
 	KUNIT_CASE(damon_test_commit_target_regions),
+	KUNIT_CASE(damon_test_commit_filter),
 	KUNIT_CASE(damon_test_commit_ctx),
 	KUNIT_CASE(damos_test_filter_out),
 	KUNIT_CASE(damon_test_feed_loop_next_input),
-- 
2.47.3