Merge tag 'lkmm.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull LKMM documentation updates from Paul McKenney:
 "This upgrades LKMM documentation, perhaps most notably adding a number
  of litmus tests illustrating cmpxchg() ordering properties.

  TL;DR: Failing cmpxchg() operations provide no ordering"

* tag 'lkmm.2024.05.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  Documentation/litmus-tests: Make cmpxchg() tests safe for klitmus
  Documentation/atomic_t: Emphasize that failed atomic operations give no ordering
  Documentation/litmus-tests: Demonstrate unordered failing cmpxchg
  Documentation/litmus-tests: Add locking tests to README