From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755768Ab3E3NeO (ORCPT ); Thu, 30 May 2013 09:34:14 -0400 Received: from smtp.citrix.com ([66.165.176.89]:58205 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754671Ab3E3NeB (ORCPT ); Thu, 30 May 2013 09:34:01 -0400 X-IronPort-AV: E=Sophos;i="4.87,770,1363132800"; d="scan'208";a="28236905" Date: Thu, 30 May 2013 14:33:42 +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 , Subject: [PATCH v5 0/4] xen/arm: 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. 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 I am starting to be pretty confident about this patch series. Please advice on what tree I should use to get this stuff upstream: most of the changes are Xen specific, but it also contains few generic ARM changes (the introduction of CONFIG_PARAVIRT and paravirt.c on ARM) and a couple of lines in kernel/sched/cputime.c (a missing include). Stefano Stabellini (4): 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 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/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 +- 11 files changed, 193 insertions(+), 119 deletions(-) create mode 100644 arch/arm/include/asm/paravirt.h create mode 100644 arch/arm/kernel/paravirt.c create mode 100644 drivers/xen/time.c git://git.kernel.org/pub/scm/linux/kernel/git/sstabellini/xen.git lost_ticks_5 Cheers, Stefano From mboxrd@z Thu Jan 1 00:00:00 1970 From: stefano.stabellini@eu.citrix.com (Stefano Stabellini) Date: Thu, 30 May 2013 14:33:42 +0100 Subject: [PATCH v5 0/4] xen/arm: CONFIG_PARAVIRT and stolen ticks accounting Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi all, this patch series introduces stolen ticks accounting for Xen on ARM. 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 I am starting to be pretty confident about this patch series. Please advice on what tree I should use to get this stuff upstream: most of the changes are Xen specific, but it also contains few generic ARM changes (the introduction of CONFIG_PARAVIRT and paravirt.c on ARM) and a couple of lines in kernel/sched/cputime.c (a missing include). Stefano Stabellini (4): 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 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/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 +- 11 files changed, 193 insertions(+), 119 deletions(-) create mode 100644 arch/arm/include/asm/paravirt.h create mode 100644 arch/arm/kernel/paravirt.c create mode 100644 drivers/xen/time.c git://git.kernel.org/pub/scm/linux/kernel/git/sstabellini/xen.git lost_ticks_5 Cheers, Stefano From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: [PATCH v5 0/4] xen/arm: CONFIG_PARAVIRT and stolen ticks accounting Date: Thu, 30 May 2013 14:33:42 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Return-path: Sender: linux-kernel-owner@vger.kernel.org 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 , arnd@arndb.de List-Id: xen-devel@lists.xenproject.org Hi all, this patch series introduces stolen ticks accounting for Xen on ARM. 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 I am starting to be pretty confident about this patch series. Please advice on what tree I should use to get this stuff upstream: most of the changes are Xen specific, but it also contains few generic ARM changes (the introduction of CONFIG_PARAVIRT and paravirt.c on ARM) and a couple of lines in kernel/sched/cputime.c (a missing include). Stefano Stabellini (4): 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 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/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 +- 11 files changed, 193 insertions(+), 119 deletions(-) create mode 100644 arch/arm/include/asm/paravirt.h create mode 100644 arch/arm/kernel/paravirt.c create mode 100644 drivers/xen/time.c git://git.kernel.org/pub/scm/linux/kernel/git/sstabellini/xen.git lost_ticks_5 Cheers, Stefano