tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / arch / sparc / include / asm / barrier_32.h
at v3.4 15 lines 566 B view raw
1#ifndef __SPARC_BARRIER_H 2#define __SPARC_BARRIER_H 3 4/* XXX Change this if we ever use a PSO mode kernel. */ 5#define mb() __asm__ __volatile__ ("" : : : "memory") 6#define rmb() mb() 7#define wmb() mb() 8#define read_barrier_depends() do { } while(0) 9#define set_mb(__var, __value) do { __var = __value; mb(); } while(0) 10#define smp_mb() __asm__ __volatile__("":::"memory") 11#define smp_rmb() __asm__ __volatile__("":::"memory") 12#define smp_wmb() __asm__ __volatile__("":::"memory") 13#define smp_read_barrier_depends() do { } while(0) 14 15#endif /* !(__SPARC_BARRIER_H) */