From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pan Xinhui Subject: [PATCH v8 5/6] powerpc: pSeries: Add pv-qspinlock build config/make Date: Mon, 5 Dec 2016 10:19:25 -0500 Message-ID: <1480951166-44830-6-git-send-email-xinhui.pan@linux.vnet.ibm.com> References: <1480951166-44830-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1480951166-44830-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: linux-kernel@vger.kernel.org Cc: xinhui.pan@linux.vnet.ibm.com, peterz@infradead.org, benh@kernel.crashing.org, boqun.feng@gmail.com, waiman.long@hpe.com, virtualization@lists.linux-foundation.org, mingo@redhat.com, paulus@samba.org, mpe@ellerman.id.au, paulmck@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org List-Id: virtualization@lists.linuxfoundation.org pSeries run as a guest and might need pv-qspinlock. Signed-off-by: Pan Xinhui --- 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