20 lines
461 B
C
20 lines
461 B
C
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/*******************
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** asm/barrier.h **
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*******************/
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#define mb() asm volatile ("mfence": : :"memory")
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#define rmb() asm volatile ("lfence": : :"memory")
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#define wmb() asm volatile ("sfence": : :"memory")
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/*
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* This is the "safe" implementation as needed for a configuration
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* with SMP enabled.
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*/
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#define smp_mb() mb()
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#define smp_rmb() barrier()
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#define smp_wmb() barrier()
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static inline void barrier() { asm volatile ("": : :"memory"); }
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