From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932458AbdJYIyo (ORCPT ); Wed, 25 Oct 2017 04:54:44 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:48602 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932431AbdJYIyW (ORCPT ); Wed, 25 Oct 2017 04:54:22 -0400 Date: Wed, 25 Oct 2017 01:54:14 -0700 From: "Paul E. McKenney" To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, will.deacon@arm.com, mark.rutland@arm.com, snitzer@redhat.com, thor.thayer@linux.intel.com, viro@zeniv.linux.org.uk, davem@davemloft.net, shuah@kernel.org, mpe@ellerman.id.au, tj@kernel.org Subject: Re: [GIT PULL de-alpha] Make core code not need to know about Alpha for v4.15 Reply-To: paulmck@linux.vnet.ibm.com References: <20171023210408.GA2930@linux.vnet.ibm.com> <20171025084548.mc7pqlshuzmtci4p@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171025084548.mc7pqlshuzmtci4p@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17102508-0048-0000-0000-000001FAD0B7 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007948; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000239; SDB=6.00936169; UDB=6.00471728; IPR=6.00716435; BA=6.00005660; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017703; XFM=3.00000015; UTC=2017-10-25 08:54:18 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17102508-0049-0000-0000-000042F9E1BD Message-Id: <20171025085414.GH3659@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-10-25_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1710250121 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 25, 2017 at 10:45:48AM +0200, Ingo Molnar wrote: > > * Paul E. McKenney wrote: > > > Hello, Ingo, > > > > This series is a first step towards making the core kernel no longer > > need to consider DEC Alpha as a special case. This is accomplished > > by two sets of patches, followed by a Coccinelle script: > > > > 1. Patches 1/19 through 15/19 in the following patches, which > > change non-Coccinelle-susceptible instances of ACCESS_ONCE() > > to either READ_ONCE() or WRITE_ONCE(), as appropriate. Most of > > these patches are courtesy of Mark Rutland. > > > > 2. Patches 16/19 through 18/19 in the following patches, which > > add smp_read_barrier_depends() to READ_ONCE() and to Alpha's > > value-returning _release and _relaxed atomic read-modify-write > > operations, while also removing lockless_dereference() in favor > > of the modified READ_ONCE(). > > > > 3. A patch generated by Coccinelle (script in commit log) that > > converts ACCESS_ONCE() to either READ_ONCE() or WRITE_ONCE(), > > as appropriate. Of course, this patch should not be applied > > as-is to mainline, instead, the Coccinelle script should be > > re-run in order to account for any changes between now and > > the time of merging into mainline. > > > > A later series (most likely targeted to v4.16) will remove instances of > > smp_read_barrier_depends() that are made redundant by this series, that > > is to say, almost all of them. > > > > These changes are available in the git repository at: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/alpha-cocci > > > > for you to fetch changes up to d19fa5187a69bd7685e9c7452ce9e339b1b079fc: > > > > COCCINELLE: treewide: kill off ACCESS_ONCE() (2017-10-21 12:52:09 -0700) > > > > ---------------------------------------------------------------- > > Mark Rutland (14): > > dm integrity: Kill off ACCESS_ONCE() > > EDAC, altera: Kill off ACCESS_ONCE() > > firmware/ivc: Kill off ACCESS_ONCE() > > fs: dcache: Kill off ACCESS_ONCE() > > fs: ncpfs: Kill off ACCESS_ONCE() > > media: dvb_ringbuffer: Kill off ACCESS_ONCE() > > net: netlink/netfilter: Kill off ACCESS_ONCE() > > net/ipv4/tcp_input.c: Kill off ACCESS_ONCE() > > net: average: Kill off ACCESS_ONCE() > > samples: mic/mpssd/mpssd.c: Kill off ACCESS_ONCE() > > selftests/powerpc: Kill off ACCESS_ONCE() > > workqueue: Kill off ACCESS_ONCE() > > rcutorture: formal: Prepare for ACCESS_ONCE() removal > > COCCINELLE: treewide: kill off ACCESS_ONCE() > > None of the patches from Mark include your Signed-off-by - I'll add them, let me > know if that's not OK. I suppose this happened because you rebased his tree? I did pull his tree rather than applying from email, and no problem adding my Signed-off-by. Thanx, Paul