From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755491AbaCLQTj (ORCPT ); Wed, 12 Mar 2014 12:19:39 -0400 Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.230]:38316 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755446AbaCLQTh (ORCPT ); Wed, 12 Mar 2014 12:19:37 -0400 Date: Wed, 12 Mar 2014 12:19:33 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: Dave Chinner , Waiman Long , arnd@arndb.de, linux-arch@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, walken@google.com, andi@firstfloor.org, riel@redhat.com, paulmck@linux.vnet.ibm.com, torvalds@linux-foundation.org, oleg@redhat.com Subject: Re: [RFC][PATCH 0/7] locking: qspinlock Message-ID: <20140312121933.40f63087@gandalf.local.home> In-Reply-To: <20140312155754.GG27965@twins.programming.kicks-ass.net> References: <20140310154236.038181843@infradead.org> <20140312023153.GW13647@dastard> <20140311231159.25a0d8dc@gandalf.local.home> <20140312042616.GX13647@dastard> <20140312060730.435122f0@gandalf.local.home> <20140312155754.GG27965@twins.programming.kicks-ass.net> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.22; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-RR-Connecting-IP: 107.14.168.118:25 X-Cloudmark-Score: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 12 Mar 2014 16:57:54 +0100 Peter Zijlstra wrote: > I build and booted these patches against tip/master as of this morning. > It build ~50 defconfig kernels on my WSM-EP. > > I've not managed to reproduce the hang as reported by Dave, but then I > doubt building kernels has anywhere near the lock contention he > generated. > Have you tried hackbench? That usually gives rq spinlocks a bit of contention. -- Steve