From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pan Xinhui Subject: [PATCH v7 6/6] powerpc: pSeries: Add pv-qspinlock build config/make Date: Mon, 19 Sep 2016 05:23:57 -0400 Message-ID: <1474277037-15200-7-git-send-email-xinhui.pan__37540.6192885295$1474262862$gmane$org@linux.vnet.ibm.com> References: <1474277037-15200-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1474277037-15200-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: xinhui.pan@linux.vnet.ibm.com, peterz@infradead.org, benh@kernel.crashing.org, waiman.long@hpe.com, virtualization@lists.linux-foundation.org, mingo@redhat.com, paulus@samba.org, mpe@ellerman.id.au, paulmck@linux.vnet.ibm.com List-Id: virtualization@lists.linuxfoundation.org pSeries run as a guest and might need pv-qspinlock. Signed-off-by: Pan Xinhui --- arch/powerpc/kernel/Makefile | 1 + arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index fe4c075..efd2f3d 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -49,6 +49,7 @@ obj-$(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 f669323..46632e4 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -128,3 +128,11 @@ config HV_PERF_CTRS systems. 24x7 is available on Power 8 systems. If unsure, select Y. + +config PARAVIRT_SPINLOCKS + bool "Paravirtialization support for qspinlock" + depends on PPC_SPLPAR && QUEUED_SPINLOCKS + default y + help + If platform supports virtualization, for example PowerVM, this option + can let guest have a better performace. -- 2.4.11