[PATCH v2 0/3] selftests/damon: misc fixes for test bugs

[Kunwu Chan]

From: Kunwu Chan <chentao@xxxxxxxxxx>

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