60 extern u8 __cmpxchg_u8(volatile u8 *ptr, u8 old, u8 new_);
61 extern u16 __cmpxchg_u16(volatile u16 *ptr, u16 old, u16 new_);
62 extern u32 __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
63 extern u64 __cmpxchg_u64(volatile u64 *ptr, u64 old, u64 new_);
67 __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)  in __cmpxchg()  argument
71 		size == 8 ? __cmpxchg_u64(ptr, old, new_) :  in __cmpxchg()
73 		size == 4 ? __cmpxchg_u32(ptr, old, new_) :  in __cmpxchg()
74 		size == 2 ? __cmpxchg_u16(ptr, old, new_) :  in __cmpxchg()
75 		size == 1 ? __cmpxchg_u8(ptr, old, new_) :  in __cmpxchg()
76 			(__cmpxchg_called_with_bad_pointer(), old);  in __cmpxchg()
90 				      unsigned long old,  in __cmpxchg_local()  argument
95 	case 8:	return __cmpxchg_u64((u64 *)ptr, old, new_);  in __cmpxchg_local()
97 	case 4:	return __cmpxchg_u32(ptr, old, new_);  in __cmpxchg_local()
99 		return __generic_cmpxchg_local(ptr, old, new_, size);  in __cmpxchg_local()