arch_atomic_xchg
#define arch_atomic_xchg arch_atomic_xchg
#define arch_atomic_xchg arch_atomic_xchg
int arch_atomic_xchg(atomic_t *, int);
#define arch_atomic_xchg arch_atomic_xchg
int arch_atomic_xchg(atomic_t *v, int new)
EXPORT_SYMBOL(arch_atomic_xchg);
#define arch_atomic_xchg arch_atomic_xchg
#if defined(arch_atomic_xchg)
return arch_atomic_xchg(v, new);
#elif defined(arch_atomic_xchg)
return arch_atomic_xchg(v, new);
#elif defined(arch_atomic_xchg)
return arch_atomic_xchg(v, new);
#elif defined(arch_atomic_xchg)
return arch_atomic_xchg(v, new);