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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,UNPARSEABLE_RELAY autolearn=ham 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 6C8ABC04EBF for ; Tue, 16 Oct 2018 04:28:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 32E2E20866 for ; Tue, 16 Oct 2018 04:28:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="UTp4qfRQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32E2E20866 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729213AbeJPMRM (ORCPT ); Tue, 16 Oct 2018 08:17:12 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:55802 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728864AbeJPMRM (ORCPT ); Tue, 16 Oct 2018 08:17:12 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w9G4IxcT100622; Tue, 16 Oct 2018 04:28:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : cc : subject : from : references : date : in-reply-to : message-id : mime-version : content-type; s=corp-2018-07-02; bh=8iZEsyh5mPuz4q453imm22EmQVJaAXoaAHflPJ0AsIo=; b=UTp4qfRQcC2YUL1eD3FGcmcx60mc+l5X6aPwIB5eJIM4y8/qPfnaFMwji5qtO9BAOI2Z wyb3FziJUrphi3RxEiVTgJAXAHaQq9DwHt/60XhQujWcW4Iy+Lscb7+NvZ9A44GtD1JF SENzXpNNGymSxgxw4cRwMo3AB/9Jhe1nCGvs0dm0xFFmhuY/e6PGYyk+3yYweLsIAf+I VQ9hXw0q9sn2shq8zMWCXZCEhdIloYgibTAsc8RduDySvTKe2sjrlfbPjXfW68Tp274n rIgbIPa4qdkBe3YVisYhCeb+BYF2fwCZQtpbHN5Q2WA2140GH+/EXwlckCRfmve7SLJv CA== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp2120.oracle.com with ESMTP id 2n38npx1v9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 Oct 2018 04:28:36 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w9G4SZAO017959 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 Oct 2018 04:28:35 GMT Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w9G4SY0J005710; Tue, 16 Oct 2018 04:28:35 GMT Received: from ca-mkp.ca.oracle.com (/10.159.214.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 15 Oct 2018 21:28:34 -0700 To: John Garry Cc: "Martin K. Petersen" , , , , Subject: Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch From: "Martin K. Petersen" Organization: Oracle Corporation References: <1537801594-207139-1-git-send-email-john.garry@huawei.com> Date: Tue, 16 Oct 2018 00:28:32 -0400 In-Reply-To: (John Garry's message of "Fri, 12 Oct 2018 11:47:05 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9047 signatures=668706 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=691 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810160038 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org John, > As I mentioned in the thread that spawned from this, we actually can't > expose multiple hw queues at the moment. And, if we did, we find a > performance drop due to having to go back to manage this IPTT > internally. > > So how to handle? We're going to continue to work towards exposing > multiple queues to upper layer, but for the moment I think patch 6/7 is > a good change. Thanks for the discussion. That's exactly what I was looking for. Applied to 4.20/scsi-queue. -- Martin K. Petersen Oracle Linux Engineering