From: SeongJae Park <sj@xxxxxxxxxx> commit 349db086a66051bc6114b64b4446787c20ac3f00 upstream. damos_quota_goal.py selftest see if DAMOS quota goals tuning feature increases or reduces the effective size quota for given score as expected. The tuning feature sets the minimum quota size as one byte, so if the effective size quota is already one, we cannot expect it further be reduced. However the test is not aware of the edge case, and fails since it shown no expected change of the effective quota. Handle the case by updating the failure logic for no change to see if it was the case, and simply skips to next test input. Link: https://lkml.kernel.org/r/20250217182304.45215-1-sj@xxxxxxxxxx Fixes: f1c07c0a1662 ("selftests/damon: add a test for DAMOS quota goal") Signed-off-by: SeongJae Park <sj@xxxxxxxxxx> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx> Closes: https://lore.kernel.org/oe-lkp/202502171423.b28a918d-lkp@xxxxxxxxx Cc: Shuah Khan <shuah@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> [6.10.x] Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/testing/selftests/damon/damos_quota_goal.py | 3 +++ 1 file changed, 3 insertions(+) --- a/tools/testing/selftests/damon/damos_quota_goal.py +++ b/tools/testing/selftests/damon/damos_quota_goal.py @@ -63,6 +63,9 @@ def main(): if last_effective_bytes != 0 else -1.0)) if last_effective_bytes == goal.effective_bytes: + # effective quota was already minimum that cannot be more reduced + if expect_increase is False and last_effective_bytes == 1: + continue print('efective bytes not changed: %d' % goal.effective_bytes) exit(1) Patches currently in stable-queue which might be from sj@xxxxxxxxxx are queue-6.12/selftests-damon-damon_nr_regions-set-ops-update-for-merge-results-check-to-100ms.patch queue-6.12/selftests-damon-damos_quota-make-real-expectation-of-quota-exceeds.patch queue-6.12/selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch queue-6.12/selftests-damon-damon_nr_regions-sort-collected-regiosn-before-checking-with-min-max-boundaries.patch
