1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <linux/compiler.h>
 3#if defined(__i386__) || defined(__x86_64__)
 4#include "../../arch/x86/include/asm/barrier.h"
 5#elif defined(__arm__)
 6#include "../../arch/arm/include/asm/barrier.h"
 7#elif defined(__aarch64__)
 8#include "../../arch/arm64/include/asm/barrier.h"
 9#elif defined(__powerpc__)
10#include "../../arch/powerpc/include/asm/barrier.h"
11#elif defined(__s390__)
12#include "../../arch/s390/include/asm/barrier.h"
13#elif defined(__sh__)
14#include "../../arch/sh/include/asm/barrier.h"
15#elif defined(__sparc__)
16#include "../../arch/sparc/include/asm/barrier.h"
17#elif defined(__tile__)
18#include "../../arch/tile/include/asm/barrier.h"
19#elif defined(__alpha__)
20#include "../../arch/alpha/include/asm/barrier.h"
21#elif defined(__mips__)
22#include "../../arch/mips/include/asm/barrier.h"
23#elif defined(__ia64__)
24#include "../../arch/ia64/include/asm/barrier.h"
25#elif defined(__xtensa__)
26#include "../../arch/xtensa/include/asm/barrier.h"
27#elif defined(__nds32__)
28#include "../../arch/nds32/include/asm/barrier.h"
29#else
30#include <asm-generic/barrier.h>
31#endif
32
33/*
34 * Generic fallback smp_*() definitions for archs that haven't
35 * been updated yet.
36 */
37
38#ifndef smp_rmb
39# define smp_rmb()	rmb()
40#endif
41
42#ifndef smp_wmb
43# define smp_wmb()	wmb()
44#endif
45
46#ifndef smp_mb
47# define smp_mb()	mb()
48#endif
49
50#ifndef smp_store_release
51# define smp_store_release(p, v)		\
52do {						\
53	smp_mb();				\
54	WRITE_ONCE(*p, v);			\
55} while (0)
56#endif
57
58#ifndef smp_load_acquire
59# define smp_load_acquire(p)			\
60({						\
61	typeof(*p) ___p1 = READ_ONCE(*p);	\
62	smp_mb();				\
63	___p1;					\
64})
65#endif