diff options
Diffstat (limited to 'arch/s390/include/asm/barrier.h')
| -rw-r--r-- | arch/s390/include/asm/barrier.h | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index f9eddbca79d2..d82130d7f2b6 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -8,28 +8,34 @@ #ifndef __ASM_BARRIER_H #define __ASM_BARRIER_H +#include <asm/march.h> + /* * Force strict CPU ordering. * And yes, this is required on UP too when we're talking * to devices. */ -#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES +#ifdef MARCH_HAS_Z196_FEATURES /* Fast-BCR without checkpoint synchronization */ -#define __ASM_BARRIER "bcr 14,0\n" +#define __ASM_BCR_SERIALIZE "bcr 14,0\n" #else -#define __ASM_BARRIER "bcr 15,0\n" +#define __ASM_BCR_SERIALIZE "bcr 15,0\n" #endif -#define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0) +static __always_inline void bcr_serialize(void) +{ + asm volatile(__ASM_BCR_SERIALIZE : : : "memory"); +} -#define rmb() barrier() -#define wmb() barrier() -#define dma_rmb() mb() -#define dma_wmb() mb() -#define __smp_mb() mb() -#define __smp_rmb() rmb() -#define __smp_wmb() wmb() +#define __mb() bcr_serialize() +#define __rmb() barrier() +#define __wmb() barrier() +#define __dma_rmb() __mb() +#define __dma_wmb() __mb() +#define __smp_mb() __mb() +#define __smp_rmb() __rmb() +#define __smp_wmb() __wmb() #define __smp_store_release(p, v) \ do { \ |