From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753340Ab3F0Nxo (ORCPT ); Thu, 27 Jun 2013 09:53:44 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:39005 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751685Ab3F0Nxn (ORCPT ); Thu, 27 Jun 2013 09:53:43 -0400 X-IronPort-AV: E=Sophos;i="4.87,952,1363132800"; d="scan'208";a="32194799" Date: Thu, 27 Jun 2013 14:53:37 +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 v6 0/5] 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 In this last iteration I have added support for stolen ticks to arm64 and rebased on Catalin's upstream branch (that contains support for Xen on arm64). Stefano Stabellini (5): 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 xen/arm: account for stolen ticks arch/arm/Kconfig | 20 ++++++++ arch/arm/include/asm/paravirt.h | 19 ++++++++ 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 | 19 ++++++++ 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/cputime.c | 4 +- 15 files changed, 258 insertions(+), 119 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_6 Cheers, Stefano