From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751128AbdBKSPb (ORCPT ); Sat, 11 Feb 2017 13:15:31 -0500 Received: from mail-wr0-f194.google.com ([209.85.128.194]:36797 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750815AbdBKSPa (ORCPT ); Sat, 11 Feb 2017 13:15:30 -0500 Date: Sat, 11 Feb 2017 19:15:26 +0100 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Peter Zijlstra , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , Andrew Morton Subject: [GIT PULL] timers/nohz fix Message-ID: <20170211181526.GA12092@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest timers-urgent-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-for-linus # HEAD: 7bdb59f1ad474bd7161adc8f923cdef10f2638d1 tick/nohz: Fix possible missing clock reprog after tick soft restart Fix a sporadic missed timer hw reprogramming bug that can result in random delays. Thanks, Ingo ------------------> Frederic Weisbecker (1): tick/nohz: Fix possible missing clock reprog after tick soft restart kernel/time/tick-sched.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 74e0388cc88d..fc6f740d0277 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -725,6 +725,11 @@ static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts, */ if (delta == 0) { tick_nohz_restart(ts, now); + /* + * Make sure next tick stop doesn't get fooled by past + * clock deadline + */ + ts->next_tick = 0; goto out; } }