Commit 603f67eb authored by SeongJae Park's avatar SeongJae Park Committed by Andrew Morton
Browse files

mm/damon/tests/core-kunit: add damon_commit_target_regions() test 

Add a new test for damon_commit_target_regions().

Link: https://lkml.kernel.org/r/20251111184415.141757-12-sj@kernel.org


Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 299a88f6

mm/damon/tests/core-kunit.h

+65 −0
Original line number Diff line number Diff line
@@ -964,6 +964,70 @@ static void damos_test_commit(struct kunit *test) 
			});

}



static struct damon_target *damon_test_help_setup_target(

		unsigned long region_start_end[][2], int nr_regions)

{

	struct damon_target *t;

	struct damon_region *r;

	int i;



	t = damon_new_target();

	if (!t)

		return NULL;

	for (i = 0; i < nr_regions; i++) {

		r = damon_new_region(region_start_end[i][0],

				region_start_end[i][1]);

		if (!r) {

			damon_free_target(t);

			return NULL;

		}

		damon_add_region(r, t);

	}

	return t;

}



static void damon_test_commit_target_regions_for(struct kunit *test,

		unsigned long dst_start_end[][2], int nr_dst_regions,

		unsigned long src_start_end[][2], int nr_src_regions,

		unsigned long expect_start_end[][2], int nr_expect_regions)

{

	struct damon_target *dst_target, *src_target;

	struct damon_region *r;

	int i;



	dst_target = damon_test_help_setup_target(dst_start_end, nr_dst_regions);

	if (!dst_target)

		kunit_skip(test, "dst target setup fail");

	src_target = damon_test_help_setup_target(src_start_end, nr_src_regions);

	if (!src_target) {

		damon_free_target(dst_target);

		kunit_skip(test, "src target setup fail");

	}

	damon_commit_target_regions(dst_target, src_target, 1);

	i = 0;

	damon_for_each_region(r, dst_target) {

		KUNIT_EXPECT_EQ(test, r->ar.start, expect_start_end[i][0]);

		KUNIT_EXPECT_EQ(test, r->ar.end, expect_start_end[i][1]);

		i++;

	}

	KUNIT_EXPECT_EQ(test, damon_nr_regions(dst_target), nr_expect_regions);

	KUNIT_EXPECT_EQ(test, i, nr_expect_regions);

	damon_free_target(dst_target);

	damon_free_target(src_target);

}



static void damon_test_commit_target_regions(struct kunit *test)

{

	damon_test_commit_target_regions_for(test,

			(unsigned long[][2]) {{3, 8}, {8, 10}}, 2,

			(unsigned long[][2]) {{4, 6}}, 1,

			(unsigned long[][2]) {{4, 6}}, 1);

	damon_test_commit_target_regions_for(test,

			(unsigned long[][2]) {{3, 8}, {8, 10}}, 2,

			(unsigned long[][2]) {}, 0,

			(unsigned long[][2]) {{3, 8}, {8, 10}}, 2);

}



static void damos_test_filter_out(struct kunit *test)

{

	struct damon_target *t;
@@ -1170,6 +1234,7 @@ static struct kunit_case damon_test_cases[] = { 
	KUNIT_CASE(damos_test_commit_dests),

	KUNIT_CASE(damos_test_commit_filter),

	KUNIT_CASE(damos_test_commit),

	KUNIT_CASE(damon_test_commit_target_regions),

	KUNIT_CASE(damos_test_filter_out),

	KUNIT_CASE(damon_test_feed_loop_next_input),

	KUNIT_CASE(damon_test_set_filters_default_reject),