cmpxchg_386_u32 263 include/asm-x86/cmpxchg_32.h extern unsigned long cmpxchg_386_u32(volatile void *, u32, u32); cmpxchg_386_u32 274 include/asm-x86/cmpxchg_32.h return cmpxchg_386_u32(ptr, old, new);