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bh=dGqKzRnIP+DKXc/Th2v0SJe+T3xtV4bAe2ASi7qsS9Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=PHuwwO9B54CWPTt5BvV46KzE/1dreh00K6wX1qBuSsMco5Bn1SOUpZnm7VX6JvLYW MdMGZO/UZwcviUhyhuxUrslPReBGjTOPXhZv3/T4fJMgqp1rO4e5P6NifuetqTaOP/ D9Z72oVcZeluSY7G24yR4lozkuCFFNzX5KcX0sxQcke7w2nODKUudV0iH1waL4z6jI Pz7+d6t0wC3TjdpD/+0KA7Ue8w/jtG6iAWY7evrZpedJzzrZBA+v/YqU4ByFp4//fJ NVdd6RsgPOoPXpwAWlWe+2qcSO/R+fhskyUox+my14LWp3X7sdHpPM4ifecZbx53Zj NDGS2i00Mo4TQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , Brendan Higgins , David Gow , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.1 02/13] mm/damon/tests/core-kunit: test damon_mvsum() Date: Sat, 20 Jun 2026 10:22:32 -0700 Message-ID: <20260620172244.90953-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260620172244.90953-1-sj@kernel.org> References: <20260620172244.90953-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 6BEC9A0008 X-Stat-Signature: zrp66jndgdsnsh4izkfgip194eksesug X-HE-Tag: 1781976178-111349 X-HE-Meta: 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 PVKQtApy TwbvFAUdt2Ix+OiIWu/CQpRnW5w0/GqPSN+haJwd1TG/+RL/sqdk1y2uUF1hTbkxlUqX760++oydCzo2v6O9JrxsqQrd8+GQlVzlSkFDumlMIaeVvhriVoEMWdNHGzeA5KaeWfdhZ4udU1Z2upynEEkiEggFGVMB+eZNBxTboa1BdrdwqD8EviqsPcTPS82NlxF3QcGxTOJs/ZFPJhaqoDZCLdPWpzSV9dPaMDw1wehZmWC3prz/N/k4vrrAQiNg4GYaZuj1SIuREff8+CStGCfxL7A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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