linux-kernel - [PATCH] mm/damon/core-test: Fix wrong expectations for 'damon_split_regions

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Date:   Thu, 28 Oct 2021 09:06:28 +0000
From:   SeongJae Park <sj@...nel.org>
To:     akpm@...ux-foundation.org
Cc:     brendanhiggins@...gle.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH] mm/damon/core-test: Fix wrong expectations for 'damon_split_regions_of()'

Kunit test cases for 'damon_split_regions_of()' expects the number of
regions after calling the function will be same to their request
('nr_sub').  However, the requested number is just an upper-limit,
because the function randomly decides the size of each sub-region.  This
commit fixes the wrong expectation.

Fixes: 17ccae8bb5c9 ("mm/damon: add kunit tests")
Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/core-test.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/damon/core-test.h b/mm/damon/core-test.h
index c938a9c34e6c..7008c3735e99 100644
--- a/mm/damon/core-test.h
+++ b/mm/damon/core-test.h
@@ -219,14 +219,14 @@ static void damon_test_split_regions_of(struct kunit *test)
 	r = damon_new_region(0, 22);
 	damon_add_region(r, t);
 	damon_split_regions_of(c, t, 2);
-	KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 2u);
+	KUNIT_EXPECT_LE(test, damon_nr_regions(t), 2u);
 	damon_free_target(t);
 
 	t = damon_new_target(42);
 	r = damon_new_region(0, 220);
 	damon_add_region(r, t);
 	damon_split_regions_of(c, t, 4);
-	KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 4u);
+	KUNIT_EXPECT_LE(test, damon_nr_regions(t), 4u);
 	damon_free_target(t);
 	damon_destroy_ctx(c);
 }
-- 
2.17.1