arch/sparc/include/asm/barrier_32.h

   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) */