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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576/* SPDX-License-Identifier: GPL-2.0-or-later *//* * Generic implementation of 64-bit atomics using spinlocks, * useful on processors that don't have 64-bit atomic instructions. * * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> */#ifndef _ASM_GENERIC_ATOMIC64_H#define _ASM_GENERIC_ATOMIC64_H#include <linux/types.h>
typedef struct { s64 __aligned(sizeof(s64)) counter;} atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
extern s64 generic_atomic64_read(const atomic64_t *v);extern void generic_atomic64_set(atomic64_t *v, s64 i);
#define ATOMIC64_OP(op) \extern void generic_atomic64_##op(s64 a, atomic64_t *v);
#define ATOMIC64_OP_RETURN(op) \extern s64 generic_atomic64_##op##_return(s64 a, atomic64_t *v);
#define ATOMIC64_FETCH_OP(op) \extern s64 generic_atomic64_fetch_##op(s64 a, atomic64_t *v);
#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_OP_RETURN(op) ATOMIC64_FETCH_OP(op)
ATOMIC64_OPS(add)ATOMIC64_OPS(sub)
#undef ATOMIC64_OPS#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_FETCH_OP(op)
ATOMIC64_OPS(and)ATOMIC64_OPS(or)ATOMIC64_OPS(xor)
#undef ATOMIC64_OPS#undef ATOMIC64_FETCH_OP#undef ATOMIC64_OP_RETURN#undef ATOMIC64_OP
extern s64 generic_atomic64_dec_if_positive(atomic64_t *v);extern s64 generic_atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n);extern s64 generic_atomic64_xchg(atomic64_t *v, s64 new);extern s64 generic_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u);
#define arch_atomic64_read generic_atomic64_read#define arch_atomic64_set generic_atomic64_set#define arch_atomic64_set_release generic_atomic64_set
#define arch_atomic64_add generic_atomic64_add#define arch_atomic64_add_return generic_atomic64_add_return#define arch_atomic64_fetch_add generic_atomic64_fetch_add#define arch_atomic64_sub generic_atomic64_sub#define arch_atomic64_sub_return generic_atomic64_sub_return#define arch_atomic64_fetch_sub generic_atomic64_fetch_sub
#define arch_atomic64_and generic_atomic64_and#define arch_atomic64_fetch_and generic_atomic64_fetch_and#define arch_atomic64_or generic_atomic64_or#define arch_atomic64_fetch_or generic_atomic64_fetch_or#define arch_atomic64_xor generic_atomic64_xor#define arch_atomic64_fetch_xor generic_atomic64_fetch_xor
#define arch_atomic64_dec_if_positive generic_atomic64_dec_if_positive#define arch_atomic64_cmpxchg generic_atomic64_cmpxchg#define arch_atomic64_xchg generic_atomic64_xchg#define arch_atomic64_fetch_add_unless generic_atomic64_fetch_add_unless
#endif /* _ASM_GENERIC_ATOMIC64_H */