Messages in this thread Patch in this message | | | From | Pan Xinhui <> | Subject | [PATCH v9 2/6] powerpc: platforms/Kconfig: Add qspinlock build config | Date | Tue, 6 Dec 2016 13:09:23 -0500 |
| |
pSeries/powerNV will use qspinlock from now on.
Signed-off-by: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> --- arch/powerpc/platforms/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index fbdae83..3559bbf 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -20,6 +20,15 @@ source "arch/powerpc/platforms/44x/Kconfig" source "arch/powerpc/platforms/40x/Kconfig" source "arch/powerpc/platforms/amigaone/Kconfig" +config ARCH_USE_QUEUED_SPINLOCKS + depends on PPC_PSERIES || PPC_POWERNV + bool "Enable qspinlock" + default y + help + Enabling this option will let kernel use qspinlock which is a kind of + fairlock. It has shown a good performance improvement on x86 and also + ppc especially in high contention cases. + config KVM_GUEST bool "KVM Guest support" default n -- 2.4.11
| |