From d994f2c8e2410ebcb928df67baa6f04e29bc9d3e Mon Sep 17 00:00:00 2001 From: Uros Bizjak Date: Wed, 5 Apr 2023 16:17:08 +0200 Subject: locking/arch: Wire up local_try_cmpxchg() Implement target specific support for local_try_cmpxchg() and local_cmpxchg() using typed C wrappers that call their _local counterpart and provide additional checking of their input arguments. Signed-off-by: Uros Bizjak Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20230405141710.3551-4-ubizjak@gmail.com Cc: Linus Torvalds --- arch/alpha/include/asm/local.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'arch/alpha') diff --git a/arch/alpha/include/asm/local.h b/arch/alpha/include/asm/local.h index fab26a1c93d5..0fcaad642cc3 100644 --- a/arch/alpha/include/asm/local.h +++ b/arch/alpha/include/asm/local.h @@ -52,8 +52,16 @@ static __inline__ long local_sub_return(long i, local_t * l) return result; } -#define local_cmpxchg(l, o, n) \ - (cmpxchg_local(&((l)->a.counter), (o), (n))) +static __inline__ long local_cmpxchg(local_t *l, long old, long new) +{ + return cmpxchg_local(&l->a.counter, old, new); +} + +static __inline__ bool local_try_cmpxchg(local_t *l, long *old, long new) +{ + return try_cmpxchg_local(&l->a.counter, (s64 *)old, new); +} + #define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n))) /** -- cgit v1.2.3