Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752701AbdLGTvd (ORCPT ); Thu, 7 Dec 2017 14:51:33 -0500 Received: from mx0a-00010702.pphosted.com ([148.163.156.75]:46218 "EHLO mx0b-00010702.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750939AbdLGTvb (ORCPT ); Thu, 7 Dec 2017 14:51:31 -0500 Date: Thu, 7 Dec 2017 13:50:52 -0600 From: Julia Cartwright To: Gratian Crisan CC: Peter Zijlstra , Thomas Gleixner , , Darren Hart , Ingo Molnar Subject: Re: PI futexes + lock stealing woes Message-ID: <20171207195052.GG18445@jcartwri.amer.corp.natinst.com> References: <20171129175605.GA863@jcartwri.amer.corp.natinst.com> <20171206234622.GZ3326@worktop> <87y3mf8f1j.fsf@ni.com> <20171207104516.ljmivyqx7yrthflu@hirez.programming.kicks-ass.net> <20171207142648.n4h3vzyajw2zlxv2@hirez.programming.kicks-ass.net> <87mv2ur3ew.fsf@kerf.amer.corp.natinst.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <87mv2ur3ew.fsf@kerf.amer.corp.natinst.com> User-Agent: Mutt/1.9.1 (2017-09-22) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-12-07_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=inbound_policy_notspam policy=inbound_policy score=30 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=759 adultscore=0 classifier=spam adjust=30 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1712070291 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 459 Lines: 15 On Thu, Dec 07, 2017 at 08:57:59AM -0600, Gratian Crisan wrote: > > Peter Zijlstra writes: > > The below compiles and boots, but is otherwise untested. Could you give > > it a spin? > > Thank you! Yes, I'll start a test now. I gave it a spin with my minimal reproducing case w/ the strategic msleep(). Previously, I could reproduce it in less than a minute in that setup; now it's been running for a couple hours. So ... looks good? :) Thanks, Julia