CoCalc -- atomic.h

GitHub Repository: torvalds/linux
Path: blob/master/arch/arm64/include/asm/atomic.h
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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 * Based on arch/arm/include/asm/atomic.h
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 *
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 * Copyright (C) 1996 Russell King.
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 * Copyright (C) 2002 Deep Blue Solutions Ltd.
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 * Copyright (C) 2012 ARM Ltd.
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 */
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#ifndef __ASM_ATOMIC_H
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#define __ASM_ATOMIC_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/barrier.h>
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#include <asm/cmpxchg.h>
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#include <asm/lse.h>
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#define ATOMIC_OP(op)							\
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static __always_inline void arch_##op(int i, atomic_t *v)		\
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{									\
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	__lse_ll_sc_body(op, i, v);					\
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}
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ATOMIC_OP(atomic_andnot)
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ATOMIC_OP(atomic_or)
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ATOMIC_OP(atomic_xor)
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ATOMIC_OP(atomic_add)
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ATOMIC_OP(atomic_and)
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ATOMIC_OP(atomic_sub)
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#undef ATOMIC_OP
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#define ATOMIC_FETCH_OP(name, op)					\
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static __always_inline int arch_##op##name(int i, atomic_t *v)		\
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{									\
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	return __lse_ll_sc_body(op##name, i, v);			\
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}
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#define ATOMIC_FETCH_OPS(op)						\
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	ATOMIC_FETCH_OP(_relaxed, op)					\
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	ATOMIC_FETCH_OP(_acquire, op)					\
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	ATOMIC_FETCH_OP(_release, op)					\
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	ATOMIC_FETCH_OP(        , op)
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ATOMIC_FETCH_OPS(atomic_fetch_andnot)
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ATOMIC_FETCH_OPS(atomic_fetch_or)
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ATOMIC_FETCH_OPS(atomic_fetch_xor)
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ATOMIC_FETCH_OPS(atomic_fetch_add)
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ATOMIC_FETCH_OPS(atomic_fetch_and)
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ATOMIC_FETCH_OPS(atomic_fetch_sub)
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ATOMIC_FETCH_OPS(atomic_add_return)
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ATOMIC_FETCH_OPS(atomic_sub_return)
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#undef ATOMIC_FETCH_OP
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#undef ATOMIC_FETCH_OPS
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#define ATOMIC64_OP(op)							\
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static __always_inline void arch_##op(long i, atomic64_t *v)		\
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{									\
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	__lse_ll_sc_body(op, i, v);					\
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}
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ATOMIC64_OP(atomic64_andnot)
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ATOMIC64_OP(atomic64_or)
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ATOMIC64_OP(atomic64_xor)
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ATOMIC64_OP(atomic64_add)
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ATOMIC64_OP(atomic64_and)
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ATOMIC64_OP(atomic64_sub)
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#undef ATOMIC64_OP
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#define ATOMIC64_FETCH_OP(name, op)					\
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static __always_inline long arch_##op##name(long i, atomic64_t *v)	\
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{									\
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	return __lse_ll_sc_body(op##name, i, v);			\
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}
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#define ATOMIC64_FETCH_OPS(op)						\
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	ATOMIC64_FETCH_OP(_relaxed, op)					\
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	ATOMIC64_FETCH_OP(_acquire, op)					\
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	ATOMIC64_FETCH_OP(_release, op)					\
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	ATOMIC64_FETCH_OP(        , op)
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ATOMIC64_FETCH_OPS(atomic64_fetch_andnot)
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ATOMIC64_FETCH_OPS(atomic64_fetch_or)
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ATOMIC64_FETCH_OPS(atomic64_fetch_xor)
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ATOMIC64_FETCH_OPS(atomic64_fetch_add)
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ATOMIC64_FETCH_OPS(atomic64_fetch_and)
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ATOMIC64_FETCH_OPS(atomic64_fetch_sub)
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ATOMIC64_FETCH_OPS(atomic64_add_return)
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ATOMIC64_FETCH_OPS(atomic64_sub_return)
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#undef ATOMIC64_FETCH_OP
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#undef ATOMIC64_FETCH_OPS
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static __always_inline long arch_atomic64_dec_if_positive(atomic64_t *v)
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{
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	return __lse_ll_sc_body(atomic64_dec_if_positive, v);
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}
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#define arch_atomic_read(v)			__READ_ONCE((v)->counter)
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#define arch_atomic_set(v, i)			__WRITE_ONCE(((v)->counter), (i))
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#define arch_atomic_add_return_relaxed		arch_atomic_add_return_relaxed
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#define arch_atomic_add_return_acquire		arch_atomic_add_return_acquire
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#define arch_atomic_add_return_release		arch_atomic_add_return_release
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#define arch_atomic_add_return			arch_atomic_add_return
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#define arch_atomic_sub_return_relaxed		arch_atomic_sub_return_relaxed
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#define arch_atomic_sub_return_acquire		arch_atomic_sub_return_acquire
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#define arch_atomic_sub_return_release		arch_atomic_sub_return_release
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#define arch_atomic_sub_return			arch_atomic_sub_return
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#define arch_atomic_fetch_add_relaxed		arch_atomic_fetch_add_relaxed
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#define arch_atomic_fetch_add_acquire		arch_atomic_fetch_add_acquire
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#define arch_atomic_fetch_add_release		arch_atomic_fetch_add_release
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#define arch_atomic_fetch_add			arch_atomic_fetch_add
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#define arch_atomic_fetch_sub_relaxed		arch_atomic_fetch_sub_relaxed
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#define arch_atomic_fetch_sub_acquire		arch_atomic_fetch_sub_acquire
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#define arch_atomic_fetch_sub_release		arch_atomic_fetch_sub_release
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#define arch_atomic_fetch_sub			arch_atomic_fetch_sub
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#define arch_atomic_fetch_and_relaxed		arch_atomic_fetch_and_relaxed
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#define arch_atomic_fetch_and_acquire		arch_atomic_fetch_and_acquire
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#define arch_atomic_fetch_and_release		arch_atomic_fetch_and_release
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#define arch_atomic_fetch_and			arch_atomic_fetch_and
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#define arch_atomic_fetch_andnot_relaxed	arch_atomic_fetch_andnot_relaxed
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#define arch_atomic_fetch_andnot_acquire	arch_atomic_fetch_andnot_acquire
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#define arch_atomic_fetch_andnot_release	arch_atomic_fetch_andnot_release
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#define arch_atomic_fetch_andnot		arch_atomic_fetch_andnot
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#define arch_atomic_fetch_or_relaxed		arch_atomic_fetch_or_relaxed
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#define arch_atomic_fetch_or_acquire		arch_atomic_fetch_or_acquire
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#define arch_atomic_fetch_or_release		arch_atomic_fetch_or_release
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#define arch_atomic_fetch_or			arch_atomic_fetch_or
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#define arch_atomic_fetch_xor_relaxed		arch_atomic_fetch_xor_relaxed
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#define arch_atomic_fetch_xor_acquire		arch_atomic_fetch_xor_acquire
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#define arch_atomic_fetch_xor_release		arch_atomic_fetch_xor_release
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#define arch_atomic_fetch_xor			arch_atomic_fetch_xor
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#define arch_atomic_andnot			arch_atomic_andnot
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/*
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 * 64-bit arch_atomic operations.
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 */
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#define ATOMIC64_INIT				ATOMIC_INIT
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#define arch_atomic64_read			arch_atomic_read
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#define arch_atomic64_set			arch_atomic_set
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#define arch_atomic64_add_return_relaxed	arch_atomic64_add_return_relaxed
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#define arch_atomic64_add_return_acquire	arch_atomic64_add_return_acquire
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#define arch_atomic64_add_return_release	arch_atomic64_add_return_release
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#define arch_atomic64_add_return		arch_atomic64_add_return
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#define arch_atomic64_sub_return_relaxed	arch_atomic64_sub_return_relaxed
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#define arch_atomic64_sub_return_acquire	arch_atomic64_sub_return_acquire
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#define arch_atomic64_sub_return_release	arch_atomic64_sub_return_release
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#define arch_atomic64_sub_return		arch_atomic64_sub_return
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#define arch_atomic64_fetch_add_relaxed		arch_atomic64_fetch_add_relaxed
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#define arch_atomic64_fetch_add_acquire		arch_atomic64_fetch_add_acquire
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#define arch_atomic64_fetch_add_release		arch_atomic64_fetch_add_release
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#define arch_atomic64_fetch_add			arch_atomic64_fetch_add
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#define arch_atomic64_fetch_sub_relaxed		arch_atomic64_fetch_sub_relaxed
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#define arch_atomic64_fetch_sub_acquire		arch_atomic64_fetch_sub_acquire
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#define arch_atomic64_fetch_sub_release		arch_atomic64_fetch_sub_release
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#define arch_atomic64_fetch_sub			arch_atomic64_fetch_sub
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#define arch_atomic64_fetch_and_relaxed		arch_atomic64_fetch_and_relaxed
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#define arch_atomic64_fetch_and_acquire		arch_atomic64_fetch_and_acquire
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#define arch_atomic64_fetch_and_release		arch_atomic64_fetch_and_release
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#define arch_atomic64_fetch_and			arch_atomic64_fetch_and
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#define arch_atomic64_fetch_andnot_relaxed	arch_atomic64_fetch_andnot_relaxed
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#define arch_atomic64_fetch_andnot_acquire	arch_atomic64_fetch_andnot_acquire
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#define arch_atomic64_fetch_andnot_release	arch_atomic64_fetch_andnot_release
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#define arch_atomic64_fetch_andnot		arch_atomic64_fetch_andnot
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#define arch_atomic64_fetch_or_relaxed		arch_atomic64_fetch_or_relaxed
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#define arch_atomic64_fetch_or_acquire		arch_atomic64_fetch_or_acquire
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#define arch_atomic64_fetch_or_release		arch_atomic64_fetch_or_release
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#define arch_atomic64_fetch_or			arch_atomic64_fetch_or
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#define arch_atomic64_fetch_xor_relaxed		arch_atomic64_fetch_xor_relaxed
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#define arch_atomic64_fetch_xor_acquire		arch_atomic64_fetch_xor_acquire
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#define arch_atomic64_fetch_xor_release		arch_atomic64_fetch_xor_release
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#define arch_atomic64_fetch_xor			arch_atomic64_fetch_xor
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#define arch_atomic64_andnot			arch_atomic64_andnot
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#define arch_atomic64_dec_if_positive		arch_atomic64_dec_if_positive
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#endif /* __ASM_ATOMIC_H */
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