Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1163117AbbKTPBf (ORCPT ); Fri, 20 Nov 2015 10:01:35 -0500 Received: from smtp.citrix.com ([66.165.176.89]:45216 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751385AbbKTO7R (ORCPT ); Fri, 20 Nov 2015 09:59:17 -0500 X-IronPort-AV: E=Sophos;i="5.20,323,1444694400"; d="scan'208";a="313659502" Date: Fri, 20 Nov 2015 14:58:37 +0000 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 v12 0/4] xen/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" X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2109 Lines: 56 Hi all, I dusted off this series from Jan 2014. Patch #2 and #3 still need an ack. This patch series introduces stolen ticks accounting for Xen on 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 Changes in v12: - drop arm support - #ifdef CONFIG_PARAVIRT the depends on it - remove useless #include's Changes in v11: - add ifdef CONFIG_PARAVIRT to kernel/sched/cputime.c, because not all architectures have an asm/paravirt.h header file to include - drop the removal of ifdef CONFIG_PARAVIRT from kernel/sched/core.c for the same reason Stefano Stabellini (4): xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c missing include asm/paravirt.h in cputime.c arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops xen/arm: account for stolen ticks arch/arm/xen/enlighten.c | 24 ++++++++++ arch/arm64/Kconfig | 20 ++++++++ arch/arm64/include/asm/paravirt.h | 20 ++++++++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/paravirt.c | 25 ++++++++++ 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 | 3 ++ 10 files changed, 191 insertions(+), 76 deletions(-) create mode 100644 arch/arm64/include/asm/paravirt.h create mode 100644 arch/arm64/kernel/paravirt.c create mode 100644 drivers/xen/time.c Cheers, Stefano -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/