Commit a677f486 authored Jan 06, 2016 by Michael S. Tsirkin

s390: use generic memory barriers



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@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

parent 23492754

arch/s390/include/asm/barrier.h

+0 −3

Original line number	Diff line number	Diff line
		@@ -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 { \