[PATCH 18/34] arm: define __smp_xxx

Michael S. Tsirkin
2015-12-30T21:47:46Z

This defines __smp_XXX barriers for arm,
for use by virtualization.

smp_XXX barriers are removed as they are
defined correctly by asm-generic/barriers.h

This reduces the amount of arch-specific boiler-plate code.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
arch/arm/include/asm/barrier.h | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 31152e8..112cc1a 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -60,15 +60,9 @@ extern void arm_heavy_mb(void);
#define dma_wmb() barrier()
#endif

-#ifndef CONFIG_SMP
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#else
-#define smp_mb() dmb(ish)
-#define smp_rmb() smp_mb()
-#define smp_wmb() dmb(ishst)
-#endif
+#define __smp_mb() dmb(ish)
+#define __smp_rmb() __smp_mb()
+#define __smp_wmb() dmb(ishst)

#include <asm-generic/barrier.h>

--
MST