The patch titled
Subject: selftests/damon/damos_quota_goal: handle minimum quota that cannot be further reduced
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: selftests/damon/damos_quota_goal: handle minimum quota that cannot be further reduced
Date: Mon, 17 Feb 2025 10:23:04 -0800
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: f1c07c0a1662b ("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 (Samsung OSG) <shuah@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [6.10.x]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/damon/damos_quota_goal.py | 3 +++
1 file changed, 3 insertions(+)
--- a/tools/testing/selftests/damon/damos_quota_goal.py~selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced
+++ a/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 -mm which might be from sj@xxxxxxxxxx are
selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch
mm-madvise-split-out-mmap-locking-operations-for-madvise.patch
mm-madvise-split-out-madvise-input-validity-check.patch
mm-madvise-split-out-madvise-behavior-execution.patch
mm-madvise-remove-redundant-mmap_lock-operations-from-process_madvise.patch
mm-damon-avoid-applying-damos-action-to-same-entity-multiple-times.patch
mm-damon-core-unset-damos-walk_completed-after-confimed-set.patch
mm-damon-core-do-not-call-damos_walk_control-walk-if-walk-is-completed.patch
mm-damon-core-do-damos-walking-in-entire-regions-granularity.patch
