[PATCH v8 5/6] powerpc: pSeries: Add pv-qspinlock build config/make
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STALE3596d
SUPERSEDED
From: Pan Xinhui <hidden>
Date: 2016-12-05 10:25:35
Also in:
lkml, virtualization
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Revision v8 of 3 in this series.
Revisions (3)
- v7 [diff vs current]
- v8 current
- v9 [diff vs current]
pSeries run as a guest and might need pv-qspinlock. Signed-off-by: Pan Xinhui <redacted> --- arch/powerpc/kernel/Makefile | 1 + arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ 2 files changed, 9 insertions(+)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 1925341..4780415 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile@@ -53,6 +53,7 @@ obj-$(CONFIG_PPC_970_NAP) += idle_power4.o obj-$(CONFIG_PPC_P7_NAP) += idle_book3s.o procfs-y := proc_powerpc.o obj-$(CONFIG_PROC_FS) += $(procfs-y) +obj-$(CONFIG_PARAVIRT_SPINLOCKS) += paravirt.o rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o obj-$(CONFIG_PPC_RTAS) += rtas.o rtas-rtc.o $(rtaspci-y-y) obj-$(CONFIG_PPC_RTAS_DAEMON) += rtasd.o
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 8a87d06..0288c78 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig@@ -31,6 +31,14 @@ config ARCH_USE_QUEUED_SPINLOCKS fairlock. It has shown a good performance improvement on x86 and also ppc especially in high contention cases. +config PARAVIRT_SPINLOCKS + bool "Paravirtialization support for qspinlock" + depends on PPC_SPLPAR && QUEUED_SPINLOCKS + default y + help + If kernel need run as a guest then enable this option. + Generally it can let kernel have a better performace. + config PPC_SPLPAR depends on PPC_PSERIES bool "Support for shared-processor logical partitions"
--
2.4.11