s390/cmpxchg: select HAVE_CMPXCHG_LOCAL option · 2e30db9522 - Gogs: Go Git Service GfA electronic

s390/cmpxchg: select HAVE_CMPXCHG_LOCAL option

Now that hopefully all cmpxchg/xchg bugs have been fixed select
HAVE_CMPXCHG_LOCAL option which uncovered a couple of bugs on s390.

The only call site which is affected seems to be within mm/vmstat.c.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

Heiko Carstens 13 년 전

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arch/s390/Kconfig
							 
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				@@ -93,6 +93,7 @@ config S390
			
				 	select ARCH_SAVE_PAGE_KEYS if HIBERNATION
			
				 	select HAVE_MEMBLOCK
			
				 	select HAVE_MEMBLOCK_NODE_MAP
			
				+	select HAVE_CMPXCHG_LOCAL
			
				 	select ARCH_DISCARD_MEMBLOCK
			
				 	select ARCH_INLINE_SPIN_TRYLOCK
			
				 	select ARCH_INLINE_SPIN_TRYLOCK_BH