23 строки
537 B
C
23 строки
537 B
C
#ifndef __ASM_GENERIC_CMPXCHG_H
|
|
#define __ASM_GENERIC_CMPXCHG_H
|
|
|
|
/*
|
|
* Generic cmpxchg
|
|
*
|
|
* Uses the local cmpxchg. Does not support SMP.
|
|
*/
|
|
#ifdef CONFIG_SMP
|
|
#error "Cannot use generic cmpxchg on SMP"
|
|
#endif
|
|
|
|
/*
|
|
* Atomic compare and exchange.
|
|
*
|
|
* Do not define __HAVE_ARCH_CMPXCHG because we want to use it to check whether
|
|
* a cmpxchg primitive faster than repeated local irq save/restore exists.
|
|
*/
|
|
#define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n))
|
|
#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
|
|
|
|
#endif
|