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arm: atomic -- Add atomic_read/atomic_set helpers

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Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2013-08-16 19:31:56 +04:00
committed by Pavel Emelyanov
parent aea8a605f3
commit 56cb0f8baf
1 changed files with 10 additions and 2 deletions
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12
arch/arm/include/asm/atomic.h
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@@ -18,9 +18,17 @@ typedef struct {
#endif #endif
static inline int atomic_read(const atomic_t *v)
{
return (*(volatile int *)&(v)->counter);
}
#define atomic_set(mem,v) ((mem)->counter = (v)) static inline void atomic_set(atomic_t *v, int i)
#define atomic_get(v) (*(volatile int *)&(v)->counter) {
v->counter = i;
}
#define atomic_get atomic_read
static inline int atomic_add_return(int i, atomic_t *v) static inline int atomic_add_return(int i, atomic_t *v)
{ {