21 unsigned long notrace __xchg64(unsigned long x, volatile unsigned long *ptr)  in __xchg64()  argument
25 	_atomic_spin_lock_irqsave(ptr, flags);  in __xchg64()
26 	temp = *ptr;  in __xchg64()
27 	*ptr = x;  in __xchg64()
28 	_atomic_spin_unlock_irqrestore(ptr, flags);  in __xchg64()
33 unsigned long notrace __xchg32(int x, volatile int *ptr)  in __xchg32()  argument
38 	_atomic_spin_lock_irqsave(ptr, flags);  in __xchg32()
39 	temp = (long) *ptr;	/* XXX - sign extension wanted? */  in __xchg32()
40 	*ptr = x;  in __xchg32()
41 	_atomic_spin_unlock_irqrestore(ptr, flags);  in __xchg32()
46 unsigned long notrace __xchg8(char x, volatile char *ptr)  in __xchg8()  argument
51 	_atomic_spin_lock_irqsave(ptr, flags);  in __xchg8()
52 	temp = (long) *ptr;	/* XXX - sign extension wanted? */  in __xchg8()
53 	*ptr = x;  in __xchg8()
54 	_atomic_spin_unlock_irqrestore(ptr, flags);  in __xchg8()
60 	T notrace __cmpxchg_##T(volatile T *ptr, T old, T new)	\
65 		_atomic_spin_lock_irqsave(ptr, flags);		\
66 		if ((prev = *ptr) == old)			\
67 			*ptr = new;				\
68 		_atomic_spin_unlock_irqrestore(ptr, flags);	\