From 819791319becde19e32788a34cc2556aef9f9e6d Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 8 May 2007 00:34:22 -0700 Subject: [PATCH] atomic.h: add atomic64 cmpxchg, xchg and add_unless to ia64 Signed-off-by: Mathieu Desnoyers Cc: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ia64/atomic.h | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h index 569ec7574ba..b16ad235c7e 100644 --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -88,12 +88,16 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) return new; } -#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) +#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new)) #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +#define atomic64_cmpxchg(v, old, new) \ + (cmpxchg(&((v)->counter), old, new)) +#define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) + #define atomic_add_unless(v, a, u) \ ({ \ - int c, old; \ + __typeof__(v->counter) c, old; \ c = atomic_read(v); \ for (;;) { \ if (unlikely(c == (u))) \ @@ -107,6 +111,22 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) }) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) +#define atomic64_add_unless(v, a, u) \ +({ \ + __typeof__(v->counter) c, old; \ + c = atomic64_read(v); \ + for (;;) { \ + if (unlikely(c == (u))) \ + break; \ + old = atomic64_cmpxchg((v), c, c + (a)); \ + if (likely(old == c)) \ + break; \ + c = old; \ + } \ + c != (u); \ +}) +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + #define atomic_add_return(i,v) \ ({ \ int __ia64_aar_i = (i); \ -- 2.41.1