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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/include/asm/barrier.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#include <linux/compiler.h>

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#if defined(__i386__) || defined(__x86_64__)

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#include "../../arch/x86/include/asm/barrier.h"

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#elif defined(__arm__)

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#include "../../arch/arm/include/asm/barrier.h"

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#elif defined(__aarch64__)

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#include "../../arch/arm64/include/asm/barrier.h"

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#elif defined(__powerpc__)

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#include "../../arch/powerpc/include/asm/barrier.h"

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#elif defined(__riscv)

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#include "../../arch/riscv/include/asm/barrier.h"

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#elif defined(__s390__)

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#include "../../arch/s390/include/asm/barrier.h"

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#elif defined(__sh__)

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#include "../../arch/sh/include/asm/barrier.h"

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#elif defined(__sparc__)

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#include "../../arch/sparc/include/asm/barrier.h"

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#elif defined(__tile__)

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#include "../../arch/tile/include/asm/barrier.h"

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#elif defined(__alpha__)

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#include "../../arch/alpha/include/asm/barrier.h"

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#elif defined(__mips__)

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#include "../../arch/mips/include/asm/barrier.h"

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#elif defined(__ia64__)

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#include "../../arch/ia64/include/asm/barrier.h"

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#elif defined(__xtensa__)

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#include "../../arch/xtensa/include/asm/barrier.h"

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#else

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#include <asm-generic/barrier.h>

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#endif

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/*

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 * Generic fallback smp_*() definitions for archs that haven't

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 * been updated yet.

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 */

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#ifndef smp_rmb

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# define smp_rmb()	rmb()

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#endif

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#ifndef smp_wmb

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# define smp_wmb()	wmb()

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#endif

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#ifndef smp_mb

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# define smp_mb()	mb()

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#endif

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#ifndef smp_store_release

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# define smp_store_release(p, v)		\

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do {						\

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	smp_mb();				\

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	WRITE_ONCE(*p, v);			\

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} while (0)

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#endif

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#ifndef smp_load_acquire

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# define smp_load_acquire(p)			\

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({						\

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	typeof(*p) ___p1 = READ_ONCE(*p);	\

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	smp_mb();				\

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	___p1;					\

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})

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#endif

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