Current File : //proc/self/root/usr/src/kernels/2.6.32-754.35.1.el6.x86_64/include/asm-generic/cmpxchg.h
#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
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