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mm/damon/core-test: add a test for damon_set_attrs()

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Commit 5ff6e2fff8 ("mm/damon/core: fix divide error in
damon_nr_accesses_to_accesses_bp()") fixed a bug by adding arguments
validation in damon_set_attrs().  Add a unit test for the added validation
to ensure the bug cannot occur again.

Link: https://lkml.kernel.org/r/20230615183323.87561-1-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2023-06-15 18:33:22 +00:00 committed by Andrew Morton
parent 5d949953f8
commit aa13779be6
1 changed files with 24 additions and 0 deletions
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24
mm/damon/core-test.h
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@ -318,6 +318,29 @@ static void damon_test_update_monitoring_result(struct kunit *test)
KUNIT_EXPECT_EQ(test, r->age, 20);
}
static void damon_test_set_attrs(struct kunit *test)
{
struct damon_ctx ctx;
struct damon_attrs valid_attrs = {
.min_nr_regions = 10, .max_nr_regions = 1000,
.sample_interval = 5000, .aggr_interval = 100000,};
struct damon_attrs invalid_attrs;
KUNIT_EXPECT_EQ(test, damon_set_attrs(&ctx, &valid_attrs), 0);
invalid_attrs = valid_attrs;
invalid_attrs.min_nr_regions = 1;
KUNIT_EXPECT_EQ(test, damon_set_attrs(&ctx, &invalid_attrs), -EINVAL);
invalid_attrs = valid_attrs;
invalid_attrs.max_nr_regions = 9;
KUNIT_EXPECT_EQ(test, damon_set_attrs(&ctx, &invalid_attrs), -EINVAL);
invalid_attrs = valid_attrs;
invalid_attrs.aggr_interval = 4999;
KUNIT_EXPECT_EQ(test, damon_set_attrs(&ctx, &invalid_attrs), -EINVAL);
}
static struct kunit_case damon_test_cases[] = {
KUNIT_CASE(damon_test_target),
KUNIT_CASE(damon_test_regions),
@ -329,6 +352,7 @@ static struct kunit_case damon_test_cases[] = {
KUNIT_CASE(damon_test_ops_registration),
KUNIT_CASE(damon_test_set_regions),
KUNIT_CASE(damon_test_update_monitoring_result),
KUNIT_CASE(damon_test_set_attrs),
{},
};