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authorSeongJae Park <sj@kernel.org>2023-09-15 05:52:47 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-10-04 20:32:30 +0300
commit0926e8ff96b58845e802438374caaca53ab36053 (patch)
treef2750796a481c23e12ae9fa73d64036d9db4d76d /mm/damon
parentd2c062ade07ffd206dd16bf085f02abc59651309 (diff)
downloadlinux-0926e8ff96b58845e802438374caaca53ab36053.tar.xz
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 <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/damon')
-rw-r--r--mm/damon/core-test.h16
1 files changed, 16 insertions, 0 deletions
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),
{},