From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755176AbcHWTwS (ORCPT ); Tue, 23 Aug 2016 15:52:18 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:45869 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753617AbcHWTwP (ORCPT ); Tue, 23 Aug 2016 15:52:15 -0400 X-IBM-Helo: d03dlp01.boulder.ibm.com X-IBM-MailFrom: paulmck@linux.vnet.ibm.com Date: Tue, 23 Aug 2016 07:41:36 -0700 From: "Paul E. McKenney" To: Geert Uytterhoeven Cc: Steven Rostedt , Peter Zijlstra , Eric Dumazet , LKML , Ingo Molnar , jiangshanlai@gmail.com, dipankar@in.ibm.com, Andrew Morton , Mathieu Desnoyers , Josh Triplett , Thomas Gleixner , David Howells , Darren Hart , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , Oleg Nesterov , pranith kumar , Greg Ungerer Subject: Re: [PATCH tip/core/rcu 2/2] documentation: Record reason for rcu_head two-byte alignment Reply-To: paulmck@linux.vnet.ibm.com References: <20160822185609.GK10153@twins.programming.kicks-ass.net> <20160822151854.175dfea8@grimm.local.home> <20160822195445.GO3482@linux.vnet.ibm.com> <20160822211606.GU3482@linux.vnet.ibm.com> <20160823134314.GE3482@linux.vnet.ibm.com> <20160823142326.GF3482@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16082314-8235-0000-0000-0000090AAFBC X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005634; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000183; SDB=6.00748581; UDB=6.00353314; IPR=6.00521246; BA=6.00004672; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012435; XFM=3.00000011; UTC=2016-08-23 14:41:27 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16082314-8236-0000-0000-000034328538 Message-Id: <20160823144136.GH3482@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-23_09:,, 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=8.0.1-1604210000 definitions=main-1608230146 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 23, 2016 at 04:30:47PM +0200, Geert Uytterhoeven wrote: > On Tue, Aug 23, 2016 at 4:23 PM, Paul E. McKenney > wrote: > > commit 89d39c83d193733ed5fff1c480cd42c9de1da404 > > Author: Paul E. McKenney > > Date: Tue Aug 23 06:51:47 2016 -0700 > > > > rcu: Tighted up __call_rcu() rcu_head alignment check > > > > Commit 720abae3d68ae ("rcu: force alignment on struct > > callback_head/rcu_head") forced the rcu_head (AKA callback_head) > > structure's alignment to pointer size, that is, to 4-byte boundaries on > > 32-bit systems and to 8-byte boundaries on 64-bit systems. This > > commit therefore checks for this same alignment in __call_rcu(), > > which used to check for two-byte alignment. > > > > Signed-off-by: Paul E. McKenney > > Cc: Geert Uytterhoeven > > Cc: Kirill A. Shutemov > > Tested-by: Geert Uytterhoeven Thank you! I have upgraded your Cc to Tested-by. ;-) Thanx, Paul