/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ALPHA_LOCAL_H#define _ALPHA_LOCAL_H #include <linux/percpu.h>#include <linux/atomic.h> typedef struct{	atomic_long_t a;} local_t; #define LOCAL_INIT(i)	{ ATOMIC_LONG_INIT(i) }#define local_read(l)	atomic_long_read(&(l)->a)#define local_set(l,i)	atomic_long_set(&(l)->a, (i))#define local_inc(l)	atomic_long_inc(&(l)->a)#define local_dec(l)	atomic_long_dec(&(l)->a)#define local_add(i,l)	atomic_long_add((i),(&(l)->a))#define local_sub(i,l)	atomic_long_sub((i),(&(l)->a)) static __inline__ long local_add_return(long i, local_t * l){	long temp, result;	__asm__ __volatile__(	"1:	ldq_l %0,%1\n"	"	addq %0,%3,%2\n"	"	addq %0,%3,%0\n"	"	stq_c %0,%1\n"	"	beq %0,2f\n"	".subsection 2\n"	"2:	br 1b\n"	".previous"	:"=&r" (temp), "=m" (l->a.counter), "=&r" (result)	:"Ir" (i), "m" (l->a.counter) : "memory");	return result;} static __inline__ long local_sub_return(long i, local_t * l){	long temp, result;	__asm__ __volatile__(	"1:	ldq_l %0,%1\n"	"	subq %0,%3,%2\n"	"	subq %0,%3,%0\n"	"	stq_c %0,%1\n"	"	beq %0,2f\n"	".subsection 2\n"	"2:	br 1b\n"	".previous"	:"=&r" (temp), "=m" (l->a.counter), "=&r" (result)	:"Ir" (i), "m" (l->a.counter) : "memory");	return result;} static __inline__ long local_cmpxchg(local_t *l, long old, long new){	return cmpxchg_local(&l->a.counter, old, new);} static __inline__ bool local_try_cmpxchg(local_t *l, long *old, long new){	return try_cmpxchg_local(&l->a.counter, (s64 *)old, new);} #define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n))) /** * local_add_unless - add unless the number is already a given value * @l: pointer of type local_t * @a: the amount to add to l... * @u: ...unless l is equal to u. * * Atomically adds @a to @l, if @v was not already @u. * Returns true if the addition was done. */static __inline__ boollocal_add_unless(local_t *l, long a, long u){	long c = local_read(l); 	do {		if (unlikely(c == u))			return false;	} while (!local_try_cmpxchg(l, &c, c + a)); 	return true;} #define local_inc_not_zero(l) local_add_unless((l), 1, 0) #define local_add_negative(a, l) (local_add_return((a), (l)) < 0) #define local_dec_return(l) local_sub_return(1,(l)) #define local_inc_return(l) local_add_return(1,(l)) #define local_sub_and_test(i,l) (local_sub_return((i), (l)) == 0) #define local_inc_and_test(l) (local_add_return(1, (l)) == 0) #define local_dec_and_test(l) (local_sub_return(1, (l)) == 0) /* Verify if faster than atomic ops */#define __local_inc(l)		((l)->a.counter++)#define __local_dec(l)		((l)->a.counter++)#define __local_add(i,l)	((l)->a.counter+=(i))#define __local_sub(i,l)	((l)->a.counter-=(i)) #endif /* _ALPHA_LOCAL_H */