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mm/damon/tests/core-kunit: add test cases for multiple regions in damon_test_split_regions_of()

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Extend damon_test_split_regions_of() to verify that it correctly handles
multiple regions with various 'min_sz_region'.

[sj@kernel.org: remove braces in damon_test_split_regions_of()]
  Link: https://lkml.kernel.org/r/20251224153125.69194-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20251224042200.2061847-5-shu17az@gmail.com
Signed-off-by: Shu Anzai <shu17az@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Shu Anzai 2025-12-24 04:21:59 +00:00 committed by Andrew Morton
parent 65a17a3e60
commit 2caf45764a
1 changed files with 20 additions and 0 deletions
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20
mm/damon/tests/core-kunit.h
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@ -275,6 +275,9 @@ static void damon_test_split_regions_of(struct kunit *test)
{
struct damon_target *t;
struct damon_region *r;
unsigned long sa[] = {0, 300, 500};
unsigned long ea[] = {220, 400, 700};
int i;
t = damon_new_target();
if (!t)
@ -301,6 +304,23 @@ static void damon_test_split_regions_of(struct kunit *test)
damon_split_regions_of(t, 4, 1);
KUNIT_EXPECT_LE(test, damon_nr_regions(t), 4u);
damon_free_target(t);
t = damon_new_target();
if (!t)
kunit_skip(test, "third target alloc fail");
for (i = 0; i < ARRAY_SIZE(sa); i++) {
r = damon_new_region(sa[i], ea[i]);
if (!r) {
damon_free_target(t);
kunit_skip(test, "region alloc fail");
}
damon_add_region(r, t);
}
damon_split_regions_of(t, 4, 5);
KUNIT_EXPECT_LE(test, damon_nr_regions(t), 12u);
damon_for_each_region(r, t)
KUNIT_EXPECT_GE(test, damon_sz_region(r) % 5ul, 0ul);
damon_free_target(t);
}
static void damon_test_ops_registration(struct kunit *test)