kernel/tools/testing/selftests/futex/functional/futex_wait.c, branch linux-rolling-stable

Merge tag 'locking-futex-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-12-10T08:21:30Z

Pull futex updates from Ingo Molnar: - Standardize on ktime_t in restart_block::time as well (Thomas Weißschuh) - Futex selftests: - Add robust list testcases (André Almeida) - Formatting fixes/cleanups (Carlos Llamas) * tag 'locking-futex-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Store time as ktime_t in restart block selftests/futex: Create test for robust list selftests/futex: Skip tests if shmget unsupported selftests/futex: Add newline to ksft_exit_fail_msg() selftests/futex: Remove unused test_futex_mpol()

selftests: complete kselftest include centralization

2025-11-27T22:24:31Z

This follow-up patch completes centralization of kselftest.h and ksefltest_harness.h includes in remaining seltests files, replacing all relative paths with a non-relative paths using shared -I include path in lib.mk Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on riscv, arm64, x86_64 and powerpc arch. [reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h] Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com Signed-off-by: Bala-Vignesh-Reddy Suggested-by: Andrew Morton Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Cc: David Hildenbrand Cc: David S. Miller Cc: Eric Dumazet Cc: Günther Noack Cc: Jakub Kacinski Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mickael Salaun Cc: Ming Lei Cc: Paolo Abeni Cc: Shuah Khan Cc: Simon Horman Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

selftests/futex: Skip tests if shmget unsupported

2025-11-14T13:39:36Z

On systems where the shmget() syscall is not supported, tests like anon_page and shared_waitv will fail. Skip these tests in such cases to allow the rest of the test suite to run. Signed-off-by: Carlos Llamas Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20251016162009.3270784-1-cmllamas@google.com

selftests/futex: Add newline to ksft_exit_fail_msg()

2025-11-14T13:39:36Z

This was missed in commit e5c04d0f3ea0 ("selftests/futex: Refactor futex_wait with kselftest_harness.h") while replacing previous perror() calls, which automatically append the newline character. Fixes: e5c04d0f3ea0 ("selftests/futex: Refactor futex_wait with kselftest_harness.h") Signed-off-by: Carlos Llamas Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20251015173556.2899646-1-cmllamas@google.com

selftests/futex: Refactor futex_wait with kselftest_harness.h

2025-09-20T16:11:55Z

To reduce the boilerplate code, refactor futex_wait test to use kselftest_harness header instead of futex's logging header. Signed-off-by: André Almeida Signed-off-by: Thomas Gleixner

selftests: futex: Add futex wait test

2021-06-22T09:20:15Z

There are three different strategies to uniquely identify a futex in the kernel: - Private futexes: uses the pointer to mm_struct and the page address - Shared futexes: checks if the page containing the address is a PageAnon: - If it is, uses the same data as a private futexes - If it isn't, uses an inode sequence number from struct inode and the page's index Create a selftest to check those three paths and basic wait/wake mechanism. Signed-off-by: André Almeida Signed-off-by: Thomas Gleixner Acked-by: Davidlohr Bueso Link: https://lore.kernel.org/r/20210531165036.41468-2-andrealmeid@collabora.com