include/asm-powerpc/synch.h

   1 #ifndef _ASM_POWERPC_SYNCH_H
   2 #define _ASM_POWERPC_SYNCH_H
   3 #ifdef __KERNEL__
   4
   5 #include <linux/stringify.h>
   6
   7 #ifdef __powerpc64__
   8 #define __SUBARCH_HAS_LWSYNC
   9 #endif
  10
  11 #ifdef __SUBARCH_HAS_LWSYNC
  12 #    define LWSYNC      lwsync
  13 #else
  14 #    define LWSYNC      sync
  15 #endif
  16
  17 #ifdef CONFIG_SMP
  18 #define ISYNC_ON_SMP    "\n\tisync\n"
  19 #define LWSYNC_ON_SMP   __stringify(LWSYNC) "\n"
  20 #else
  21 #define ISYNC_ON_SMP
  22 #define LWSYNC_ON_SMP
  23 #endif
  24
  25 static inline void eieio(void)
  26 {
  27         __asm__ __volatile__ ("eieio" : : : "memory");
  28 }
  29
  30 static inline void isync(void)
  31 {
  32         __asm__ __volatile__ ("isync" : : : "memory");
  33 }
  34
  35 #endif /* __KERNEL__ */
  36 #endif  /* _ASM_POWERPC_SYNCH_H */