Merge tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel...

Pull futex updates from Thomas Gleixner:

 - Improvements to various futex self tests:

    - Conversion to the selftest harness

    - Provide and use thread creation and synchronization helpers to
      reduce the dependency on delays, which tend to fail on loaded test
      systems

    - New tests for validating owner exit scenarios for robust and PI
      futexes

    - Runtime detect supported features and skip the tests if the kernel
      has no support

 - A few minor fixes

* tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/futex: Give circular-list nodes static storage
  selftests/futex: Use thread synchronization helpers instead of usleep()
  selftests/futex: Provide thread creation and synchronization helpers
  selftests/futex: Dynamically skip unsupported tests
  selftests/futex: Add FUTEX_LOCK_PI owner-exiting coverage
  selftests/futex: Migrate robust_list to harness
  selftests/futex: Migrate futex_priv_hash to harness
  selftests/futex: Migrate futex_numa_mpol to harness
  selftests/futex: Migrate futex_requeue_pi_signal_restart to harness
  selftests/futex: Migrate futex_requeue_pi_mismatched_ops to harness
  selftests/futex: Migrate futex_requeue_pi to harness
  selftests/futex: Migrate futex_requeue to harness
  selftests/futex: Migrate futex_wait_uninitialized_heap to harness
  selftests/futex: Migrate futex_wait_private_mapped_file to harness
  selftests/futex: Migrate futex_wait to harness
  selftests/futex: Correct validation logic in waitv
  selftests/futex: Migrate functional tests to harness
  selftests/futex: Remove static keyword from 'head'
  futex: Remove unnecessary NULL check before kvfree()
  selftests/rseq: Replace glibc-specific __GNUC_PREREQ with portable check

diff --cc kernel/futex/core.c
Simple merge