From ae819edb97012b29db0a78f314d80d20959d77c9 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Fri, 22 May 2026 08:40:22 -0700 Subject: [PATCH] selftests/damon/sysfs.py: stop kdamonds before failing When an assertion is failed, sysfs.py DAMON selftest immediately exits the test program leaving the DAMON running behind. Many of the following tests need to start DAMON on their own. But because DAMON that was started by sysfs.py is still running, those start attempts fail, and the tests are failed or skipped. Update sysfs.py to stop DAMON before exiting the test program due to the assertion failure. Link: https://lore.kernel.org/20260522154026.80546-12-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/sysfs.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftests/damon/sysfs.py index cd4d82c85211..aa03a1187489 100755 --- a/tools/testing/selftests/damon/sysfs.py +++ b/tools/testing/selftests/damon/sysfs.py @@ -24,9 +24,12 @@ def dump_damon_status_dict(pid): except Exception as e: return None, 'json.load fail (%s)' % e +kdamonds = None def fail(expectation, status): print('unexpected %s' % expectation) print(json.dumps(status, indent=4)) + if kdamonds is not None: + kdamonds.stop() exit(1) def assert_true(condition, expectation, status): @@ -248,6 +251,7 @@ def assert_ctxs_committed(kdamonds): ctx.pause = False def main(): + global kdamonds kdamonds = _damon_sysfs.Kdamonds( [_damon_sysfs.Kdamond( contexts=[_damon_sysfs.DamonCtx(