From 5cd4c268412f802e71b7722c3ec4638b0fe04acd Mon Sep 17 00:00:00 2001 From: Uros Bizjak Date: Wed, 5 Apr 2023 16:17:09 +0200 Subject: locking/x86: Define arch_try_cmpxchg_local() Define target specific arch_try_cmpxchg_local(). This definition overrides the generic arch_try_cmpxchg_local() fallback definition and enables target-specific implementation of try_cmpxchg_local(). Signed-off-by: Uros Bizjak Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20230405141710.3551-5-ubizjak@gmail.com Cc: Linus Torvalds --- arch/x86/include/asm/cmpxchg.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h index 94fbe6ae7431..540573f515b7 100644 --- a/arch/x86/include/asm/cmpxchg.h +++ b/arch/x86/include/asm/cmpxchg.h @@ -221,9 +221,15 @@ extern void __add_wrong_size(void) #define __try_cmpxchg(ptr, pold, new, size) \ __raw_try_cmpxchg((ptr), (pold), (new), (size), LOCK_PREFIX) +#define __try_cmpxchg_local(ptr, pold, new, size) \ + __raw_try_cmpxchg((ptr), (pold), (new), (size), "") + #define arch_try_cmpxchg(ptr, pold, new) \ __try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr))) +#define arch_try_cmpxchg_local(ptr, pold, new) \ + __try_cmpxchg_local((ptr), (pold), (new), sizeof(*(ptr))) + /* * xadd() adds "inc" to "*ptr" and atomically returns the previous * value of "*ptr". -- cgit v1.2.3