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66 lines
1.7 KiB
66 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* atomic.h: Thankfully the V9 is at least reasonable for this |
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* stuff. |
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* |
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* Copyright (C) 1996, 1997, 2000, 2012 David S. Miller ([email protected]) |
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*/ |
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#ifndef __ARCH_SPARC64_ATOMIC__ |
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#define __ARCH_SPARC64_ATOMIC__ |
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#include <linux/types.h> |
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#include <asm/cmpxchg.h> |
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#include <asm/barrier.h> |
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#define ATOMIC64_INIT(i) { (i) } |
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#define atomic_read(v) READ_ONCE((v)->counter) |
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#define atomic64_read(v) READ_ONCE((v)->counter) |
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#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i)) |
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#define atomic64_set(v, i) WRITE_ONCE(((v)->counter), (i)) |
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#define ATOMIC_OP(op) \ |
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void atomic_##op(int, atomic_t *); \ |
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void atomic64_##op(s64, atomic64_t *); |
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#define ATOMIC_OP_RETURN(op) \ |
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int atomic_##op##_return(int, atomic_t *); \ |
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s64 atomic64_##op##_return(s64, atomic64_t *); |
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#define ATOMIC_FETCH_OP(op) \ |
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int atomic_fetch_##op(int, atomic_t *); \ |
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s64 atomic64_fetch_##op(s64, atomic64_t *); |
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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op) |
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ATOMIC_OPS(add) |
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ATOMIC_OPS(sub) |
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#undef ATOMIC_OPS |
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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) |
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ATOMIC_OPS(and) |
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ATOMIC_OPS(or) |
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ATOMIC_OPS(xor) |
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#undef ATOMIC_OPS |
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#undef ATOMIC_FETCH_OP |
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#undef ATOMIC_OP_RETURN |
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#undef ATOMIC_OP |
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#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) |
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static inline int atomic_xchg(atomic_t *v, int new) |
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{ |
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return xchg(&v->counter, new); |
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} |
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#define atomic64_cmpxchg(v, o, n) \ |
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((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) |
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#define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) |
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s64 atomic64_dec_if_positive(atomic64_t *v); |
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#define atomic64_dec_if_positive atomic64_dec_if_positive |
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#endif /* !(__ARCH_SPARC64_ATOMIC__) */
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