tree 332af6e2fafef47b9dc9891282b422eb5dcc5f3f
parent d5ed10bb80bb376501cb56015a47457647efaabf
parent ec570320b09f76d52819e60abdccf372658216b6
author Linus Torvalds <torvalds@linux-foundation.org> 1683316615 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1683316615 -0700
mergetag object ec570320b09f76d52819e60abdccf372658216b6
 type commit
 tag locking-core-2023-05-05
 tagger Ingo Molnar <mingo@kernel.org> 1683274941 +0200
 
 Locking changes in v6.4:
 
  - Introduce local{,64}_try_cmpxchg() - a slightly more optimal
    primitive, which will be used in perf events ring-buffer code.
 
  - Simplify/modify rwsems on PREEMPT_RT, to address writer starvation.
 
  - Misc cleanups/fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Introduce local{,64}_try_cmpxchg() - a slightly more optimal
   primitive, which will be used in perf events ring-buffer code

 - Simplify/modify rwsems on PREEMPT_RT, to address writer starvation

 - Misc cleanups/fixes

* tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/atomic: Correct (cmp)xchg() instrumentation
  locking/x86: Define arch_try_cmpxchg_local()
  locking/arch: Wire up local_try_cmpxchg()
  locking/generic: Wire up local{,64}_try_cmpxchg()
  locking/atomic: Add generic try_cmpxchg{,64}_local() support
  locking/rwbase: Mitigate indefinite writer starvation
  locking/arch: Rename all internal __xchg() names to __arch_xchg()