From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73B10C433E1 for ; Fri, 7 Aug 2020 04:32:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 57F3C21744 for ; Fri, 7 Aug 2020 04:32:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="gAYVyRcD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725970AbgHGEco (ORCPT ); Fri, 7 Aug 2020 00:32:44 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:37622 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725263AbgHGEcn (ORCPT ); Fri, 7 Aug 2020 00:32:43 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0774WNsI141338; Fri, 7 Aug 2020 04:32:23 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : cc : subject : from : message-id : references : date : in-reply-to : mime-version : content-type; s=corp-2020-01-29; bh=8Wfo9c+uZ6H9abHfs8H2dH/06jlrmsvNMvWZnZ+m/xQ=; b=gAYVyRcDHCZA1oU2kbOgRx4hqvmV4BJvzhMXYaeXs9feh9vbcmA/P1TUX4HB+zt5uwb/ /gqO6h6vmZST0Ojs2lYI4qe7Vp1Cs+VLLSoFpvRz9jljEGaAR64sVajPwEhdXeVSa+bP Fr1CQgFirE23smTbLCZQ759WgnTasH065pa8SA096yqmvdbypkk4TuTywvrOhJCPw7ho 3uGxrmsaIXtO8A5PwfKVUTmx4TIAODzKICSbDK3e7hGZaoNbzYT8YizJesaVQ2EEJs66 kA3ezxDWhl28g4/S7jGg5a0ON3VTZZVV9cTI20Aepc41PNDKuj3JfEeCin6nGwP2ekRu 4w== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 32r6ep6ejq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 07 Aug 2020 04:32:23 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0774T1Ch032156; Fri, 7 Aug 2020 04:32:23 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 32pdnye4u6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 07 Aug 2020 04:32:23 +0000 Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0774WJdV016137; Fri, 7 Aug 2020 04:32:20 GMT Received: from ca-mkp.ca.oracle.com (/10.159.214.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 06 Aug 2020 21:32:19 -0700 To: Avri Altman Cc: Bean Huo , "daejun7.park@samsung.com" , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "asutoshd@codeaurora.org" , "beanhuo@micron.com" , "stanley.chu@mediatek.com" , "cang@codeaurora.org" , "bvanassche@acm.org" , "tomas.winkler@intel.com" , ALIM AKHTAR , "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Sang-yoon Oh , Sung-Jun Park , yongmyung lee , Jinyoung CHOI , Adel Choi , BoRam Shin Subject: Re: [PATCH v8 0/4] scsi: ufs: Add Host Performance Booster Support From: "Martin K. Petersen" Organization: Oracle Corporation Message-ID: References: <231786897.01596704281715.JavaMail.epsvc@epcpadp2> <7c59c7abf7b00c368228b3096e1bea8c9e2b2e80.camel@gmail.com> <39c546268abead68f4c00f17dc47c1597f3e0273.camel@gmail.com> Date: Fri, 07 Aug 2020 00:32:15 -0400 In-Reply-To: (Avri Altman's message of "Thu, 6 Aug 2020 13:56:34 +0000") MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9705 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 spamscore=0 mlxscore=0 bulkscore=0 adultscore=0 phishscore=0 malwarescore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008070031 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9705 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 bulkscore=0 malwarescore=0 clxscore=1011 mlxscore=0 priorityscore=1501 adultscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008070032 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Avri, > Martin - Are you considering to merge the HPB feature eventually to > mainline kernel? I promise to take a look at the new series. But I can't say I'm a big fan of how this feature was defined in the spec. And - as discussed a couple of weeks ago - I would still like to see some supporting evidence from a realistic workload and not a synthetic benchmark. -- Martin K. Petersen Oracle Linux Engineering