From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755126Ab0IJCze (ORCPT ); Thu, 9 Sep 2010 22:55:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:13671 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753711Ab0IJCzc (ORCPT ); Thu, 9 Sep 2010 22:55:32 -0400 Date: Thu, 9 Sep 2010 22:55:24 -0400 From: Dave Jones To: Petr Tesarik Cc: Tony Luck , "linux-ia64@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: Serious problem with ticket spinlocks on ia64 Message-ID: <20100910025523.GC31280@redhat.com> Mail-Followup-To: Dave Jones , Petr Tesarik , Tony Luck , "linux-ia64@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <201008271537.35709.ptesarik@suse.cz> <201009031104.38433.ptesarik@suse.cz> <201009031635.25093.ptesarik@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201009031635.25093.ptesarik@suse.cz> User-Agent: Mutt/1.5.20 (2009-12-10) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 03, 2010 at 04:35:23PM +0200, Petr Tesarik wrote: > I didn't see values around zero on any other CPU in the system. So, either > there is something seriously broken in hardware, or I made a silly mistake in > the monitoring code. ... > memset(dbr, sizeof dbr, 0); ^^^^^^^^^^^^^ swapped arguments. Perhaps unrelated to the problem, but still silly :) Dave