diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-09-05 07:26:17 -0400 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-09-28 06:46:29 -0400 |
| commit | efc1d23b3d9af8cbff9f26677d67fb9c1b9cb792 (patch) | |
| tree | 3d8aeeff16451c5bd61ead4e68bb418e71a3d3bb /arch/s390/Kconfig | |
| parent | 491f6f8e5fd9a57aaf03b6d6e3e153f1c27d8a46 (diff) | |
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/Kconfig | 1 |
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 | |||
| 93 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | 93 | select ARCH_INLINE_WRITE_UNLOCK_IRQ |
| 94 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | 94 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE |
| 95 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION | 95 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
| 96 | select ARCH_USE_CMPXCHG_LOCKREF | ||
| 96 | select ARCH_WANT_IPC_PARSE_VERSION | 97 | select ARCH_WANT_IPC_PARSE_VERSION |
| 97 | select BUILDTIME_EXTABLE_SORT | 98 | select BUILDTIME_EXTABLE_SORT |
| 98 | select CLONE_BACKWARDS2 | 99 | select CLONE_BACKWARDS2 |