pSeries/powerNV will use qspinlock from now on. Signed-off-by: Pan Xinhui <xinhui.pan@xxxxxxxxxxxxxxxxxx> --- 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 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
