[PATCH v2 0/2] selftests/mm: refactor pkey helpers and fix mmap error handling

[Hongfu Li]

This series is version 2 of the previous patch [0].  In v2, the changes are
split into two patches for easier review.
[0] https://lore.kernel.org/all/20260518082120.3890552-1-lihongfu@xxxxxxxxxx/

The main changes in this series are to refactor shared tracing and assertion
helpers into a common file, unify both pkey selftests on pkey_assert() and 
per-test tracing for consistent diagnostics, and add missing mmap() return 
checks with MAP_FAILED used throughout for readability and consistency.

Hongfu Li (2):
  selftests/mm: Refactor pkey test helpers and unify assertions
  selftests/mm: add missing mmap() return checks in pkey tests

 tools/testing/selftests/mm/pkey-helpers.h     |  5 +-
 tools/testing/selftests/mm/pkey-powerpc.h     |  2 +-
 .../selftests/mm/pkey_sighandler_tests.c      | 20 ++--
 tools/testing/selftests/mm/pkey_util.c        | 81 +++++++++++++++
 tools/testing/selftests/mm/protection_keys.c  | 98 ++-----------------
 5 files changed, 109 insertions(+), 97 deletions(-)

---
v2:
- Update commit message
- Move shared tracing and assertion helpers to a common file,
  replace assert() with pkey_assert() in sighandler tests
- Drop assert() from main() in protection_keys.c and add a proper error
  message instead.
-- 
2.50.1