diff options
Diffstat (limited to 'include/asm-powerpc/synch.h')
| -rw-r--r-- | include/asm-powerpc/synch.h | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/include/asm-powerpc/synch.h b/include/asm-powerpc/synch.h index 4660c0394a7..c90d9d9aae7 100644 --- a/include/asm-powerpc/synch.h +++ b/include/asm-powerpc/synch.h @@ -1,7 +1,8 @@ #ifndef _ASM_POWERPC_SYNCH_H #define _ASM_POWERPC_SYNCH_H +#ifdef __KERNEL__ -#include <linux/config.h> +#include <linux/stringify.h> #ifdef __powerpc64__ #define __SUBARCH_HAS_LWSYNC @@ -13,20 +14,12 @@ # define LWSYNC sync #endif - -/* - * Arguably the bitops and *xchg operations don't imply any memory barrier - * or SMP ordering, but in fact a lot of drivers expect them to imply - * both, since they do on x86 cpus. - */ #ifdef CONFIG_SMP -#define EIEIO_ON_SMP "eieio\n" #define ISYNC_ON_SMP "\n\tisync" -#define SYNC_ON_SMP __stringify(LWSYNC) "\n" +#define LWSYNC_ON_SMP __stringify(LWSYNC) "\n" #else -#define EIEIO_ON_SMP #define ISYNC_ON_SMP -#define SYNC_ON_SMP +#define LWSYNC_ON_SMP #endif static inline void eieio(void) @@ -39,13 +32,5 @@ static inline void isync(void) __asm__ __volatile__ ("isync" : : : "memory"); } -#ifdef CONFIG_SMP -#define eieio_on_smp() eieio() -#define isync_on_smp() isync() -#else -#define eieio_on_smp() __asm__ __volatile__("": : :"memory") -#define isync_on_smp() __asm__ __volatile__("": : :"memory") -#endif - +#endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_SYNCH_H */ - |