Viewing file:  atomic_64.h (1.81 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0 */
/* atomic.h: Thankfully the V9 is at least reasonable for this
* stuff.
*
* Copyright (C) 1996, 1997, 2000, 2012 David S. Miller ([email protected])
*/
#ifndef __ARCH_SPARC64_ATOMIC__
#define __ARCH_SPARC64_ATOMIC__
#include <linux/types.h>
#include <asm/cmpxchg.h>
#include <asm/barrier.h>
#define ATOMIC64_INIT(i) { (i) }
#define arch_atomic_read(v) READ_ONCE((v)->counter)
#define arch_atomic64_read(v) READ_ONCE((v)->counter)
#define arch_atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
#define arch_atomic64_set(v, i) WRITE_ONCE(((v)->counter), (i))
#define ATOMIC_OP(op) \
void arch_atomic_##op(int, atomic_t *); \
void arch_atomic64_##op(s64, atomic64_t *);
#define ATOMIC_OP_RETURN(op) \
int arch_atomic_##op##_return(int, atomic_t *); \
s64 arch_atomic64_##op##_return(s64, atomic64_t *);
#define ATOMIC_FETCH_OP(op) \
int arch_atomic_fetch_##op(int, atomic_t *); \
s64 arch_atomic64_fetch_##op(s64, atomic64_t *);
#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)
ATOMIC_OPS(add)
ATOMIC_OPS(sub)
#undef ATOMIC_OPS
#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)
ATOMIC_OPS(and)
ATOMIC_OPS(or)
ATOMIC_OPS(xor)
#undef ATOMIC_OPS
#undef ATOMIC_FETCH_OP
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
#define arch_atomic_cmpxchg(v, o, n) (arch_cmpxchg(&((v)->counter), (o), (n)))
static inline int arch_atomic_xchg(atomic_t *v, int new)
{
return arch_xchg(&v->counter, new);
}
#define arch_atomic64_cmpxchg(v, o, n) \
((__typeof__((v)->counter))arch_cmpxchg(&((v)->counter), (o), (n)))
#define arch_atomic64_xchg(v, new) (arch_xchg(&((v)->counter), new))
s64 arch_atomic64_dec_if_positive(atomic64_t *v);
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
#endif /* !(__ARCH_SPARC64_ATOMIC__) */
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