From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758139Ab2JZJ4z (ORCPT ); Fri, 26 Oct 2012 05:56:55 -0400 Received: from www.linutronix.de ([62.245.132.108]:33386 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754281Ab2JZJ4y (ORCPT ); Fri, 26 Oct 2012 05:56:54 -0400 Date: Fri, 26 Oct 2012 11:56:52 +0200 (CEST) From: Thomas Gleixner To: Yanmin Zhang cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , "he, bo" Subject: Re: [PATCH V2] hrtimer:__run_hrtimer races with enqueue_hrtimer In-Reply-To: <1351241719.2207.17.camel@ymzhang.sh.intel.com> Message-ID: References: <1351241719.2207.17.camel@ymzhang.sh.intel.com> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 26 Oct 2012, Yanmin Zhang wrote: > Basically, __run_hrtimer has a race with enqueue_hrtimer. When __run_hrtimer calls NAK. See my reply to V1. It's not a race in the core code. Thanks, tglx