From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755654Ab3F1LUH (ORCPT ); Fri, 28 Jun 2013 07:20:07 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:60787 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755613Ab3F1LUB (ORCPT ); Fri, 28 Jun 2013 07:20:01 -0400 X-IronPort-AV: E=Sophos;i="4.87,958,1363132800"; d="scan'208";a="32429434" Date: Fri, 28 Jun 2013 12:19:54 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball.uk.xensource.com To: "xen-devel@lists.xensource.com" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Konrad Rzeszutek Wilk , "marc.zyngier@arm.com" , Will Deacon , Stefano Stabellini , Ian Campbell , Russell King - ARM Linux , Olof Johansson , , Catalin Marinas Subject: [PATCH v7 0/6] xen/arm/arm64: CONFIG_PARAVIRT and stolen ticks accounting Message-ID: User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, this patch series introduces stolen ticks accounting for Xen on ARM and ARM64. Stolen ticks are clocksource ticks that have been "stolen" from the cpu, typically because Linux is running in a virtual machine and the vcpu has been descheduled. To account for these ticks we introduce CONFIG_PARAVIRT and pv_time_ops so that we can make use of: kernel/sched/cputime.c:steal_account_process_tick Stefano Stabellini (6): xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c kernel: missing include in cputime.c arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops core: remove ifdef CONFIG_PARAVIRT xen/arm: account for stolen ticks arch/arm/Kconfig | 20 ++++++++ arch/arm/include/asm/paravirt.h | 20 ++++++++ arch/arm/kernel/Makefile | 1 + arch/arm/kernel/paravirt.c | 25 ++++++++++ arch/arm/xen/enlighten.c | 21 +++++++++ arch/arm64/Kconfig | 20 ++++++++ arch/arm64/include/asm/paravirt.h | 20 ++++++++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/paravirt.c | 25 ++++++++++ arch/ia64/xen/time.c | 48 +++----------------- arch/x86/xen/time.c | 76 +------------------------------ drivers/xen/Makefile | 2 +- drivers/xen/time.c | 91 +++++++++++++++++++++++++++++++++++++ include/xen/xen-ops.h | 5 ++ kernel/sched/core.c | 2 - kernel/sched/cputime.c | 1 + 16 files changed, 258 insertions(+), 120 deletions(-) create mode 100644 arch/arm/include/asm/paravirt.h create mode 100644 arch/arm/kernel/paravirt.c create mode 100644 arch/arm64/include/asm/paravirt.h create mode 100644 arch/arm64/kernel/paravirt.c create mode 100644 drivers/xen/time.c git://git.kernel.org/pub/scm/linux/kernel/git/sstabellini/xen.git lost_ticks_7 Cheers, Stefano