1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __BARRIER_H
3 #define __BARRIER_H
4
5 #define mb() __asm__ __volatile__("mb": : :"memory")
6 #define rmb() __asm__ __volatile__("mb": : :"memory")
7 #define wmb() __asm__ __volatile__("wmb": : :"memory")
8
9 #define __smp_load_acquire(p) \
10 ({ \
11 compiletime_assert_atomic_type(*p); \
12 __READ_ONCE(*p); \
13 })
14
15 #ifdef CONFIG_SMP
16 #define __ASM_SMP_MB "\tmb\n"
17 #else
18 #define __ASM_SMP_MB
19 #endif
20
21 #include <asm-generic/barrier.h>
22
23 #endif /* __BARRIER_H */
24
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