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Date: Fri, 9 Sep 2022 20:28:57 +0000
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: damon@...ts.linux.dev, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH 3/7] mm/damon/core-test: test damon_set_regions
Preceding commit fixes a bug in 'damon_set_regions()', which allows
holes in the new monitoring target ranges. This commit adds a kunit
test case for the problem to avoid any regression.
Signed-off-by: SeongJae Park <sj@...nel.org>
---
mm/damon/core-test.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/mm/damon/core-test.h b/mm/damon/core-test.h
index 45db79d28fdc..3db9b7368756 100644
--- a/mm/damon/core-test.h
+++ b/mm/damon/core-test.h
@@ -267,6 +267,28 @@ static void damon_test_ops_registration(struct kunit *test)
KUNIT_EXPECT_EQ(test, damon_register_ops(&ops), -EINVAL);
}
+static void damon_test_set_regions(struct kunit *test)
+{
+ struct damon_target *t = damon_new_target();
+ struct damon_region *r1 = damon_new_region(4, 16);
+ struct damon_region *r2 = damon_new_region(24, 32);
+ struct damon_addr_range range = {.start = 8, .end = 28};
+ unsigned long expects[] = {8, 16, 16, 24, 24, 28};
+ int expect_idx = 0;
+ struct damon_region *r;
+
+ damon_add_region(r1, t);
+ damon_add_region(r2, t);
+ damon_set_regions(t, &range, 1);
+
+ KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 3);
+ damon_for_each_region(r, t) {
+ KUNIT_EXPECT_EQ(test, r->ar.start, expects[expect_idx++]);
+ KUNIT_EXPECT_EQ(test, r->ar.end, expects[expect_idx++]);
+ }
+ damon_destroy_target(t);
+}
+
static struct kunit_case damon_test_cases[] = {
KUNIT_CASE(damon_test_target),
KUNIT_CASE(damon_test_regions),
@@ -276,6 +298,7 @@ static struct kunit_case damon_test_cases[] = {
KUNIT_CASE(damon_test_merge_regions_of),
KUNIT_CASE(damon_test_split_regions_of),
KUNIT_CASE(damon_test_ops_registration),
+ KUNIT_CASE(damon_test_set_regions),
{},
};
--
2.25.1
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