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33 lines
700 B
33 lines
700 B
#ifndef __BARRIER_H
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#define __BARRIER_H
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#include <asm/compiler.h>
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#define mb() \
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__asm__ __volatile__("mb": : :"memory")
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#define rmb() \
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__asm__ __volatile__("mb": : :"memory")
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#define wmb() \
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__asm__ __volatile__("wmb": : :"memory")
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#define read_barrier_depends() \
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__asm__ __volatile__("mb": : :"memory")
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#ifdef CONFIG_SMP
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#define smp_mb() mb()
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#define smp_rmb() rmb()
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#define smp_wmb() wmb()
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#define smp_read_barrier_depends() read_barrier_depends()
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#else
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#define smp_mb() barrier()
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#define smp_rmb() barrier()
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#define smp_wmb() barrier()
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#define smp_read_barrier_depends() do { } while (0)
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#endif
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#define set_mb(var, value) \
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do { var = value; mb(); } while (0)
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#endif /* __BARRIER_H */
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