Add a simple unit test for damon_nr_accesses_mvsum()'s internal core logic, damon_mvsum(). The test contains cases for just-started windows, partially completed windows, and just-completed windows.
Signed-off-by: SeongJae Park <[email protected]> --- mm/damon/tests/core-kunit.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index 4e448c08c724a..cdab14396250f 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -623,6 +623,30 @@ static void damon_test_moving_sum(struct kunit *test) } } +static void damon_test_mvsum(struct kunit *test) +{ + unsigned long input_expects[] = { + /* current value, last value, remaining window (bp) */ + 0, 49, 10000, 49, /* 0 + 49 * 1 */ + 3, 10, 7000, 10, /* 3 + 10 * 0.7 */ + 3, 10, 5000, 8, /* 3 + 10 * 0.5 */ + 32, 100, 1000, 42, /* 32 + 100 * 0.1 */ + 42, 49, 0, 42, /* 42 + 49 * 0 */ + }; + + int i; + + for (i = 0; i < ARRAY_SIZE(input_expects); i += 4) { + unsigned long current_nr = input_expects[i]; + unsigned long last_nr = input_expects[i + 1]; + unsigned long left_window_bp = input_expects[i + 2]; + unsigned long expect = input_expects[i + 3]; + + KUNIT_EXPECT_EQ(test, damon_mvsum(current_nr, last_nr, + left_window_bp), expect); + } +} + static void damos_test_new_filter(struct kunit *test) { struct damos_filter *filter; @@ -1501,6 +1525,7 @@ static struct kunit_case damon_test_cases[] = { KUNIT_CASE(damon_test_update_monitoring_result), KUNIT_CASE(damon_test_set_attrs), KUNIT_CASE(damon_test_moving_sum), + KUNIT_CASE(damon_test_mvsum), KUNIT_CASE(damos_test_new_filter), KUNIT_CASE(damos_test_commit_quota_goal), KUNIT_CASE(damos_test_commit_quota_goals), -- 2.47.3
