cmpxchg_386_u8    261 include/asm-x86/cmpxchg_32.h extern unsigned long cmpxchg_386_u8(volatile void *, u8, u8);
cmpxchg_386_u8    270 include/asm-x86/cmpxchg_32.h 		return cmpxchg_386_u8(ptr, old, new);