From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753010AbaCaCCk (ORCPT ); Sun, 30 Mar 2014 22:02:40 -0400 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:33709 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752896AbaCaCCj (ORCPT ); Sun, 30 Mar 2014 22:02:39 -0400 X-SecurityPolicyCheck: OK by SHieldMailChecker v1.7.4 Message-ID: <5338CC86.9080602@jp.fujitsu.com> Date: Mon, 31 Mar 2014 11:01:42 +0900 From: Hidetoshi Seto User-Agent: Mozilla/5.0 (Windows NT 6.0; rv:24.0) Gecko/20100101 Thunderbird/24.0 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: Fernando Luis Vazquez Cao , Tetsuo Handa , Frederic Weisbecker , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Andrew Morton , Arjan van de Ven , Oleg Nesterov , Preeti U Murthy Subject: [PATCH 0/2 v2] nohz: fix idle accounting in NO_HZ kernels Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This patch set (rebased on v3.14-rc8) will fix an issue that idle/iowait of /proc/stat can go backward. Originally reported by Tetsuo and Fernando at last year, Mar 2013. v2 have Preeti's Reviewed-by (Thanks!). Of course still reviews are welcome. Thanks, H.Seto Hidetoshi Seto (2): nohz: use seqlock to avoid race on idle time stats v2 nohz, procfs: introduce get_cpu_idle/iowait_time_coarse fs/proc/stat.c | 16 ++--- include/linux/tick.h | 5 + kernel/time/tick-sched.c | 197 ++++++++++++++++++++++++++++++++++++++++------ 3 files changed, 183 insertions(+), 35 deletions(-)