From: Kunwu Chan <kunwu.chan@linux.dev>
To: sj@kernel.org, shuah@kernel.org
Cc: damon@lists.linux.dev, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Kunwu Chan <chentao@kylinos.cn>
Subject: [PATCH v2 0/3] selftests/damon: misc fixes for test bugs
Date: Mon, 1 Jun 2026 11:23:11 +0800 [thread overview]
Message-ID: <20260601032314.424013-1-kunwu.chan@linux.dev> (raw)
From: Kunwu Chan <chentao@kylinos.cn>
This series fixes several bugs in the DAMON selftests. Most are
trivial but cause tests to silently pass when they shouldn't, or
fail prematurely on slow machines.
Patch 1 fixes mutable default arguments in DamonCtx.__init__()
that cause state to leak between test instances.
Patch 2 fixes wrong operator precedence and join TypeError in
damos_tried_regions.py.
Patch 3 fixes several wrong strings that produce dead elif
branches, skipped file existence checks, and broken dict key
lookups.
Based on next-20260529.
base-commit: 7da7f07112610a520567421dd2ffcb51beaefbcc
---
Changes in v2:
- Fix From:/Signed-off-by mismatch.
- Add Reviewed-by tags from SeongJae Park.
- Drop the duplicate memcg_path fix.
- Drop the empty aggregation-cycle retry fix pending root-cause
investigation.
- No code change
Kunwu Chan (3):
selftests/damon: prevent cross-context state pollution in DamonCtx
selftests/damon/damos_tried_regions: fix expectation output and join
TypeError
selftests/damon: fix dead code, skipped checks, and broken lookups
tools/testing/selftests/damon/_damon_sysfs.py | 12 +++++++++---
.../testing/selftests/damon/damos_apply_interval.py | 2 +-
tools/testing/selftests/damon/damos_quota_goal.py | 2 +-
tools/testing/selftests/damon/damos_tried_regions.py | 4 ++--
.../selftests/damon/drgn_dump_damon_status.py | 2 +-
tools/testing/selftests/damon/sysfs.py | 4 ++--
tools/testing/selftests/damon/sysfs.sh | 6 +++---
...fs_update_schemes_tried_regions_wss_estimation.py | 2 +-
8 files changed, 20 insertions(+), 14 deletions(-)
--
2.43.0
next reply other threads:[~2026-06-01 3:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 3:23 Kunwu Chan [this message]
2026-06-01 3:23 ` [PATCH v2 1/3] selftests/damon: prevent cross-context state pollution in DamonCtx Kunwu Chan
2026-06-01 3:23 ` [PATCH v2 2/3] selftests/damon/damos_tried_regions: fix expectation output and join TypeError Kunwu Chan
2026-06-01 3:23 ` [PATCH v2 3/3] selftests/damon: fix dead code, skipped checks, and broken lookups Kunwu Chan
2026-06-01 14:22 ` [PATCH v2 0/3] selftests/damon: misc fixes for test bugs SeongJae Park
2026-06-03 2:11 ` Kunwu Chan
2026-06-03 5:02 ` SeongJae Park
2026-06-03 9:15 ` Kunwu Chan
2026-06-01 14:28 ` SeongJae Park
2026-06-03 2:06 ` Kunwu Chan
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