[Xen-devel] [PATCH v3 40/41] s390: use generic memory barriers

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

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


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