From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751684AbdLBJCQ (ORCPT ); Sat, 2 Dec 2017 04:02:16 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57562 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751586AbdLBJCO (ORCPT ); Sat, 2 Dec 2017 04:02:14 -0500 Date: Sat, 2 Dec 2017 10:02:08 +0100 From: Heiko Carstens To: Will Deacon Cc: linux-kernel@vger.kernel.org, sebott@linux.vnet.ibm.com, schwidefsky@de.ibm.com, peterz@infradead.org, mingo@kernel.org Subject: Re: [PATCH 0/2] Fix boot regression for s390 and remove break_lock References: <1511894539-7988-1-git-send-email-will.deacon@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1511894539-7988-1-git-send-email-will.deacon@arm.com> X-TM-AS-GCONF: 00 x-cbid: 17120209-0008-0000-0000-000004B21925 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17120209-0009-0000-0000-00001E4504AD Message-Id: <20171202090207.GA5046@osiris> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-12-02_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712020132 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 28, 2017 at 06:42:17PM +0000, Will Deacon wrote: > Hi all, > > The following two patches do the following: > > 1. Fix boot breakage reported on s390 caused by a8a217c22116 > 2. Kill off the break_lock field entirely, since it's not actually > that useful > > I didn't go the whole hog and remove CONFIG_GENERIC_LOCKBREAK, since the > "do something different with locks in preemptible kernels" isn't necessarily > a bad idea, and PowerPC actually implements things like arch_spin_relax > for that. > > The first patch should go in to 4.15. > > Thanks, > > Will > > --->8 > > Will Deacon (2): > locking/core: Fix deadlock during boot on systems with > GENERIC_LOCKBREAK > locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y > > include/linux/rwlock_types.h | 3 --- > include/linux/spinlock.h | 5 ----- > include/linux/spinlock_types.h | 3 --- > kernel/locking/spinlock.c | 13 +++---------- > 4 files changed, 3 insertions(+), 21 deletions(-) *ping* ... these patches haven't been picked up yet as far as I can tell. Peter, Ingo?