The s390 kernel is SMP to 99.99%, we just didn't bother with a
non-smp variant for the memory-barriers. If the generic header
is used we'd get the non-smp version for free. It will save a
small amount of text space for CONFIG_SMP=n.
Suggested-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
arch/s390/include/asm/barrier.h | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index fbd25b2..4d26fa4 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -29,9 +29,6 @@
#define __smp_mb() mb()
#define __smp_rmb() rmb()
#define __smp_wmb() wmb()
-#define smp_mb() __smp_mb()
-#define smp_rmb() __smp_rmb()
-#define smp_wmb() __smp_wmb()
#define __smp_store_release(p, v) \
do { \
--
MST
