summaryrefslogtreecommitdiffstats
path: root/arch/s390/Kconfig
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2013-09-05 13:26:17 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2013-09-28 12:46:29 +0200
commitefc1d23b3d9af8cbff9f26677d67fb9c1b9cb792 (patch)
tree3d8aeeff16451c5bd61ead4e68bb418e71a3d3bb /arch/s390/Kconfig
parent491f6f8e5fd9a57aaf03b6d6e3e153f1c27d8a46 (diff)
downloadlinux-efc1d23b3d9af8cbff9f26677d67fb9c1b9cb792.tar.bz2
s390: enable ARCH_USE_CMPXCHG_LOCKREF
Enable ARCH_USE_CMPXCHG_LOCKREF since it shows performance improvements with Linus' simple stat() test case of up to 50% on a 30 cpu system. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r--arch/s390/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index d3fa84070b82..7143793859fa 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -93,6 +93,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select ARCH_SAVE_PAGE_KEYS if HIBERNATION
+ select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS2