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| author | Peter Zijlstra <peterz@infradead.org> | 2020-08-29 16:03:35 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-10-12 19:27:27 +0300 |
| commit | 29f006fdefe6f88abde973a0b0f20d2704e93fd4 (patch) | |
| tree | 11df0a506bb05fdd72c07a4fed5bbdb80b3b7bf5 /arch/x86/include/asm/atomic.h | |
| parent | d741bf41d7c7db4898bacfcb020353cddc032fd8 (diff) | |
| download | linux-29f006fdefe6f88abde973a0b0f20d2704e93fd4.tar.xz | |
asm-generic/atomic: Add try_cmpxchg() fallbacks
Only x86 provides try_cmpxchg() outside of the atomic_t interfaces,
provide generic fallbacks to create this interface from the widely
available cmpxchg() function.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/159870621515.1229682.15506193091065001742.stgit@devnote2
Diffstat (limited to 'arch/x86/include/asm/atomic.h')
| -rw-r--r-- | arch/x86/include/asm/atomic.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h index b6cac6e9bb70..f732741ad7c7 100644 --- a/arch/x86/include/asm/atomic.h +++ b/arch/x86/include/asm/atomic.h @@ -199,7 +199,7 @@ static __always_inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new) static __always_inline bool arch_atomic_try_cmpxchg(atomic_t *v, int *old, int new) { - return try_cmpxchg(&v->counter, old, new); + return arch_try_cmpxchg(&v->counter, old, new); } #define arch_atomic_try_cmpxchg arch_atomic_try_cmpxchg |