arch_xchg         104 arch/arm64/include/asm/cmpxchg.h #define arch_xchg(...)		__xchg_wrapper( _mb, __VA_ARGS__)
arch_xchg          78 arch/x86/include/asm/cmpxchg.h #define arch_xchg(ptr, v)	__xchg_op((ptr), (v), xchg, "")