From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753107AbeC1Nlu (ORCPT ); Wed, 28 Mar 2018 09:41:50 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:47348 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752974AbeC1Nlr (ORCPT ); Wed, 28 Mar 2018 09:41:47 -0400 Date: Wed, 28 Mar 2018 06:42:32 -0700 From: "Paul E. McKenney" To: schwidefsky@de.ibm.com, borntraeger@de.ibm.com Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, stern@rowland.harvard.edu, parri.andrea@gmail.com, will.deacon@arm.com, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, akiyks@gmail.com Subject: [PATCH RFC tools/memory-model] Add s390.{cfg,cat} Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 18032813-0036-0000-0000-000002D8149A X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008758; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000255; SDB=6.01009642; UDB=6.00514347; IPR=6.00788924; MB=3.00020289; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-28 13:41:44 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18032813-0037-0000-0000-000043CA7393 Message-Id: <20180328134232.GA29274@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-03-28_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803280147 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! The prototype patch shown below provides files required to allow herd7 to evaluate C-language litmus tests for the multicopy-atomic TSO ordering provided by s390. This patch should be viewed with great suspicion. It does what I expect it to do on SB (with and without barriers), IRIW without barriers, and Alan's SB with read-of-write added, but my expectations are quite likely faulty, and my test cases are very few in number. Either way, this is the easy part. The hard part (which I am happy to leave to others) is making litmus7 and klitmus7 able to do tests on actual hardware, as well as enabling herd to handle litmus tests containing BAL. ;-) Note that CPU architectures already supported by herd might well need only a .cfg file that refers to herd's pre-existing support. Thoughts? Thanx, Paul ------------------------------------------------------------------------ commit 2fff0ff161b71215e7f7292b9eff4bc77ba64f29 Author: Paul E. McKenney Date: Wed Mar 28 06:30:39 2018 -0700 tools/memory-model: Add .cfg and .cat files for s390 This commit adds s390.cat and s390.cfg files to allow users to check litmus tests for s390-specific code. Note that this change only enables herd7 checking of C-language litmus tests. Larger changes are required to enable the litmus7 and klitmus7 tools to check litmus tests on real hardare. Suggested-by: Martin Schwidefsky Suggested-by: Christian Borntraeger Signed-off-by: Paul E. McKenney diff --git a/tools/memory-model/s390.cat b/tools/memory-model/s390.cat new file mode 100644 index 000000000000..618e88f50d9a --- /dev/null +++ b/tools/memory-model/s390.cat @@ -0,0 +1,12 @@ +s390 + +include "fences.cat" +include "cos.cat" + +(* Atomic *) +empty rmw & (fre;coe) as atom + +(* TSO with multicopy atomicity *) +acyclic (po \ (W * R)) | po-loc | fr | rf | co as sc + +(* Fences are somehow handled implicitly, at least for SB+mb... *) diff --git a/tools/memory-model/s390.cfg b/tools/memory-model/s390.cfg new file mode 100644 index 000000000000..d77e05d2395c --- /dev/null +++ b/tools/memory-model/s390.cfg @@ -0,0 +1,21 @@ +macros linux-kernel.def +bell linux-kernel.bell +model s390.cat +graph columns +squished true +showevents noregs +movelabel true +fontsize 8 +xscale 2.0 +yscale 1.5 +arrowsize 0.8 +showinitrf false +showfinalrf false +showinitwrites false +splines spline +pad 0.1 +edgeattr hb,color,indigo +edgeattr co,color,blue +edgeattr mb,color,darkgreen +edgeattr wmb,color,darkgreen +edgeattr rmb,color,darkgreen