[PATCH v3 0/3] selftests/damon: misc fixes for test bugs

[SJ Park]

This series fixes several bugs in the DAMON selftests.  Most are trivial
but makes test output wrong or even silently pass the one test case for
'avail_operation' file existence check.

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.

Changes from v2:
- v2: https://lore.kernel.org/20260601032314.424013-1-kunwu.chan@xxxxxxxxx
- Rebase to latest mm-new.
Changes from v1:
- v1: https://lore.kernel.org/20260531085633.48626-1-kunwu.chan@xxxxxxxxx
- Fix From:/Signed-off-by mismatch.
- Add Reviewed-by tags from SJ 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(-)


base-commit: 1f7264da0cec89427b167cc51930dd8c169dade4
-- 
2.47.3