arch/cris/include/asm/barrier.h

   1 #ifndef __ASM_CRIS_BARRIER_H
   2 #define __ASM_CRIS_BARRIER_H
   3
   4 #define nop() __asm__ __volatile__ ("nop");
   5
   6 #define barrier() __asm__ __volatile__("": : :"memory")
   7 #define mb() barrier()
   8 #define rmb() mb()
   9 #define wmb() mb()
  10 #define read_barrier_depends() do { } while(0)
  11 #define set_mb(var, value)  do { var = value; mb(); } while (0)
  12
  13 #ifdef CONFIG_SMP
  14 #define smp_mb()        mb()
  15 #define smp_rmb()       rmb()
  16 #define smp_wmb()       wmb()
  17 #define smp_read_barrier_depends()     read_barrier_depends()
  18 #else
  19 #define smp_mb()        barrier()
  20 #define smp_rmb()       barrier()
  21 #define smp_wmb()       barrier()
  22 #define smp_read_barrier_depends()     do { } while(0)
  23 #endif
  24
  25 #endif /* __ASM_CRIS_BARRIER_H */