From 0926e8ff96b58845e802438374caaca53ab36053 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Fri, 15 Sep 2023 02:52:47 +0000 Subject: mm/damon/core-test: add a unit test for damon_moving_sum() Add a simple unit test for the pseudo moving-sum function (damon_moving_sum()). Link: https://lkml.kernel.org/r/20230915025251.72816-5-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Signed-off-by: Andrew Morton --- mm/damon/core-test.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'mm') diff --git a/mm/damon/core-test.h b/mm/damon/core-test.h index 6cc8b245586d..c539f0e8377e 100644 --- a/mm/damon/core-test.h +++ b/mm/damon/core-test.h @@ -341,6 +341,21 @@ static void damon_test_set_attrs(struct kunit *test) KUNIT_EXPECT_EQ(test, damon_set_attrs(c, &invalid_attrs), -EINVAL); } +static void damon_test_moving_sum(struct kunit *test) +{ + unsigned int mvsum = 50000, nomvsum = 50000, len_window = 10; + unsigned int new_values[] = {10000, 0, 10000, 0, 0, 0, 10000, 0, 0, 0}; + unsigned int expects[] = {55000, 50000, 55000, 50000, 45000, 40000, + 45000, 40000, 35000, 30000}; + int i; + + for (i = 0; i < ARRAY_SIZE(new_values); i++) { + mvsum = damon_moving_sum(mvsum, nomvsum, len_window, + new_values[i]); + KUNIT_EXPECT_EQ(test, mvsum, expects[i]); + } +} + static void damos_test_new_filter(struct kunit *test) { struct damos_filter *filter; @@ -425,6 +440,7 @@ static struct kunit_case damon_test_cases[] = { KUNIT_CASE(damon_test_set_regions), KUNIT_CASE(damon_test_update_monitoring_result), KUNIT_CASE(damon_test_set_attrs), + KUNIT_CASE(damon_test_moving_sum), KUNIT_CASE(damos_test_new_filter), KUNIT_CASE(damos_test_filter_out), {}, -- cgit v1.2.3