From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755755AbbFLPC4 (ORCPT ); Fri, 12 Jun 2015 11:02:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40467 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754986AbbFLPCy (ORCPT ); Fri, 12 Jun 2015 11:02:54 -0400 Message-ID: <557AF49C.7060702@redhat.com> Date: Fri, 12 Jun 2015 11:02:52 -0400 From: Prarit Bhargava User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20131028 Thunderbird/17.0.10 MIME-Version: 1.0 To: Dave Jones , John Stultz , linux-kernel@vger.kernel.org, Daniel Bristot de Oliveira , Richard Cochran , Jan Kara , Jiri Bohac , Thomas Gleixner , Ingo Molnar , Shuah Khan Subject: Re: [PATCH 0/5 v2] Fixes for leapsecond expiring early ABS_TIME CLOCK_REALTIME timers References: <1434063297-28657-1-git-send-email-john.stultz@linaro.org> <20150612145211.GA22489@codemonkey.org.uk> <557AF2FD.2070606@redhat.com> <20150612145958.GB22489@codemonkey.org.uk> In-Reply-To: <20150612145958.GB22489@codemonkey.org.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/12/2015 10:59 AM, Dave Jones wrote: > On Fri, Jun 12, 2015 at 10:55:57AM -0400, Prarit Bhargava wrote: > > > > > This series has only had limited testing, so I wanted to send > > > > it out for initial review and comment. Folks can grab this tree > > > > via git for testing here: > > > > https://git.linaro.org/people/john.stultz/linux.git dev/early-leap-timer > > > > > > Any idea how far back this reaches ? Ie, which longterm stable releases > > > might be affected by this ? > > > > Likely occurs in any kernel after NOHZ was introduced. > > At least on 3.14, it seems to happen even if NOHZ is disabled. Ouch. :( I wonder if we've every synched the tick edge with the second edge. Your test implies the answer is "no". P.