Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755428AbbGCO5f (ORCPT ); Fri, 3 Jul 2015 10:57:35 -0400 Received: from foss.arm.com ([217.140.101.70]:53702 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755638AbbGCO52 (ORCPT ); Fri, 3 Jul 2015 10:57:28 -0400 Message-ID: <5596A2D4.4080103@arm.com> Date: Fri, 03 Jul 2015 15:57:24 +0100 From: Sudeep Holla User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Thomas Gleixner CC: Sudeep Holla , Wolfram Sang , Geert Uytterhoeven , Kevin Hilman , Magnus Damm , "linux-sh@vger.kernel.org" , Tyler Baker , "linux-kernel@vger.kernel.org" , Simon Horman , Borislav Petkov , "linux-arm-kernel@lists.infradead.org" Subject: Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler" References: <20150703024044.GB24695@verge.net.au> <20150703105441.GF1521@katana> <20150703133245.GA19284@katana> <20150703143703.GB19284@katana> <5596A015.1030709@arm.com> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 859 Lines: 28 On 03/07/15 15:54, Thomas Gleixner wrote: > On Fri, 3 Jul 2015, Sudeep Holla wrote: >> On 03/07/15 15:37, Wolfram Sang wrote: >>> >>>> So this is a single core machine and uses the em_sti timer w/o the >>>> broadcast nonsense. In Simons case it looks like em_sti is used as >>>> broadcast device. >>> >>> We use the same board. Just my kernel has SMP=n. >>> >> >> If it's UP build, then GENERIC_CLOCKEVENTS_BROADCAST is disabled. You >> may be hitting the issue I reported[1] and is still under discussion. > > Nope. The UP version uses a non affected timer. > Ah OK, sorry for the noise then. Regards, Sudeep -- 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/