1 #ifndef _ASM_X86_CMPXCHG_64_H
2 #define _ASM_X86_CMPXCHG_64_H
3
set_64bit(volatile u64 * ptr,u64 val)4 static inline void set_64bit(volatile u64 *ptr, u64 val)
5 {
6 *ptr = val;
7 }
8
9 #define __HAVE_ARCH_CMPXCHG 1
10
11 #define cmpxchg64(ptr, o, n) \
12 ({ \
13 BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
14 cmpxchg((ptr), (o), (n)); \
15 })
16
17 #define cmpxchg64_local(ptr, o, n) \
18 ({ \
19 BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
20 cmpxchg_local((ptr), (o), (n)); \
21 })
22
23 #define system_has_cmpxchg_double() cpu_has_cx16
24
25 #endif /* _ASM_X86_CMPXCHG_64_H */
26