[deliverable/linux.git] / arch / x86 / include / asm / cmpxchg_64.h

#ifndef _ASM_X86_CMPXCHG_64_H
#define _ASM_X86_CMPXCHG_64_H

static inline void set_64bit(volatile u64 *ptr, u64 val)
{
	*ptr = val;
}

#define cmpxchg64(ptr, o, n)						\
({									\
	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
	cmpxchg((ptr), (o), (n));					\
})

#define cmpxchg64_local(ptr, o, n)					\
({									\
	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
	cmpxchg_local((ptr), (o), (n));					\
})

#define system_has_cmpxchg_double() cpu_has_cx16

#endif /* _ASM_X86_CMPXCHG_64_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_CMPXCHG_64_H
1965aae3 PA	2	#define _ASM_X86_CMPXCHG_64_H
a436ed9c	3
00a41546 JF	4	static inline void set_64bit(volatile u64 *ptr, u64 val)
	5	{
	6	*ptr = val;
	7	}
	8
32f49eab	9	#define cmpxchg64(ptr, o, n) \
e52da357	10	({ \
32f49eab MD	11	BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
32f49eab MD	12	cmpxchg((ptr), (o), (n)); \
e52da357	13	})
f3834b9e	14
32f49eab	15	#define cmpxchg64_local(ptr, o, n) \
e52da357	16	({ \
32f49eab MD	17	BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
32f49eab MD	18	cmpxchg_local((ptr), (o), (n)); \
e52da357	19	})
a436ed9c	20
3824abd1 CL	21	#define system_has_cmpxchg_double() cpu_has_cx16
3824abd1 CL	22
1965aae3	23	#endif /* _ASM_X86_CMPXCHG_64_H */