From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938848AbcISF1N (ORCPT ); Mon, 19 Sep 2016 01:27:13 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55064 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755785AbcISF0P (ORCPT ); Mon, 19 Sep 2016 01:26:15 -0400 From: Pan Xinhui To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, paulmck@linux.vnet.ibm.com, waiman.long@hpe.com, xinhui.pan@linux.vnet.ibm.com, virtualization@lists.linux-foundation.org Subject: [PATCH v7 6/6] powerpc: pSeries: Add pv-qspinlock build config/make Date: Mon, 19 Sep 2016 05:23:57 -0400 X-Mailer: git-send-email 2.4.11 In-Reply-To: <1474277037-15200-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> References: <1474277037-15200-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16091905-0004-0000-0000-0000106A30C5 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005783; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000185; SDB=6.00759039; UDB=6.00360650; IPR=6.00533187; BA=6.00004734; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012708; XFM=3.00000011; UTC=2016-09-19 05:26:13 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16091905-0005-0000-0000-0000790331DB Message-Id: <1474277037-15200-7-git-send-email-xinhui.pan@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-09-19_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609020000 definitions=main-1609190079 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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