diff options
Diffstat (limited to 'include/asm-parisc/atomic.h')
| -rw-r--r-- | include/asm-parisc/atomic.h | 47 |
1 files changed, 31 insertions, 16 deletions
diff --git a/include/asm-parisc/atomic.h b/include/asm-parisc/atomic.h index 66a0edb..e894ee3 100644 --- a/include/asm-parisc/atomic.h +++ b/include/asm-parisc/atomic.h @@ -6,6 +6,7 @@ #define _ASM_PARISC_ATOMIC_H_ #include <linux/types.h> +#include <asm/system.h> /* * Atomic operations that C can't guarantee us. Useful for @@ -174,14 +175,21 @@ static __inline__ int atomic_read(const atomic_t *v) * Atomically adds @a to @v, so long as it was not @u. * Returns non-zero if @v was not @u, and zero otherwise. */ -#define atomic_add_unless(v, a, u) \ -({ \ - __typeof__((v)->counter) c, old; \ - c = atomic_read(v); \ - while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ - c = old; \ - c != (u); \ -}) +static __inline__ int atomic_add_unless(atomic_t *v, int a, int u) +{ + int c, old; + c = atomic_read(v); + for (;;) { + if (unlikely(c == (u))) + break; + old = atomic_cmpxchg((v), c, c + (a)); + if (likely(old == c)) + break; + c = old; + } + return c != (u); +} + #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) #define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v)))) @@ -283,14 +291,21 @@ atomic64_read(const atomic64_t *v) * Atomically adds @a to @v, so long as it was not @u. * Returns non-zero if @v was not @u, and zero otherwise. */ -#define atomic64_add_unless(v, a, u) \ -({ \ - __typeof__((v)->counter) c, old; \ - c = atomic64_read(v); \ - while (c != (u) && (old = atomic64_cmpxchg((v), c, c + (a))) != c) \ - c = old; \ - c != (u); \ -}) +static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) +{ + long 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; + } + return c != (u); +} + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) #endif /* CONFIG_64BIT */ |
