From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422871AbcFML0F (ORCPT ); Mon, 13 Jun 2016 07:26:05 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:49519 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161212AbcFML0E (ORCPT ); Mon, 13 Jun 2016 07:26:04 -0400 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: heiko.carstens@de.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org Date: Mon, 13 Jun 2016 13:25:53 +0200 From: Heiko Carstens To: Peter Zijlstra Cc: Greg Kroah-Hartman , Martin Schwidefsky , linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] s390/topology: add drawer scheduling domain level References: <1465376956-100711-1-git-send-email-heiko.carstens@de.ibm.com> <1465376956-100711-3-git-send-email-heiko.carstens@de.ibm.com> <20160613110621.GV30909@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160613110621.GV30909@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16061311-0032-0000-0000-000001D6F1E4 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16061311-0033-0000-0000-00001B43BA36 Message-Id: <20160613112553.GC3808@osiris> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-06-13_06:,, 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-1606130130 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 13, 2016 at 01:06:21PM +0200, Peter Zijlstra wrote: > On Wed, Jun 08, 2016 at 11:09:16AM +0200, Heiko Carstens wrote: > > The z13 machine added a fourth level to the cpu topology > > information. The new top level is called drawer. > > > > A drawer contains two books, which used to be the top level. > > > > Adding this additional scheduling domain did show performance > > improvements for some workloads of up to 8%, while there don't > > seem to be any workloads impacted in a negative way. > > Right; so no objection. > > Acked-by: Peter Zijlstra (Intel) May I add your ACK also to the sysfs patch?