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=-3.4 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,USER_AGENT_GIT 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 A064AC2BC61 for ; Mon, 29 Oct 2018 08:34:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 466B32082D for ; Mon, 29 Oct 2018 08:34:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="BqV8S92L" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 466B32082D 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 S1729433AbeJ2RVr (ORCPT ); Mon, 29 Oct 2018 13:21:47 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:37732 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729286AbeJ2RVr (ORCPT ); Mon, 29 Oct 2018 13:21:47 -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 w9T8SpTV013176; Mon, 29 Oct 2018 08:34:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id; s=corp-2018-07-02; bh=690QdTpQUIPmwOBlK3N6CRFxt3mwVwZzIMFkarWwql8=; b=BqV8S92LIpS2VpfOcEZcifJN/4spb/tXxpwehMhZO8RLO9ErqaVMqeeFrmuQB7IZVLkk ZcpIDB3O4dWd3Px9mbQz+J40Rep0xJvcRzMsj37ND4JQpdyY/Zbci8Aqwj7y12J0zWCa 4tn19FQQsJk+VNl/gvMe0ZXR4dQFgWog3bC7fXhiUkKKZ4uYP/8F2ooH85HzlwZCFu87 1xD3islsKG0SWehtuBXBwKwZcjjDzJMg6+kjfYFf6D4HFH41L8PC+0jBLfYGDdq9I3C5 OgjXpArOLbPezRY4qagzjr/ZkP2NqJ8IcJD8wsaqjImwWAu6U4wwJIODwKBEJr2usxMt oQ== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp2120.oracle.com with ESMTP id 2ncfypm5ub-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Oct 2018 08:34:06 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w9T8Y5vR027342 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Oct 2018 08:34:05 GMT Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w9T8Y49Y020147; Mon, 29 Oct 2018 08:34:04 GMT Received: from will-ThinkCentre-M93p.cn.oracle.com (/10.182.70.234) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 29 Oct 2018 01:34:04 -0700 From: Jianchao Wang To: axboe@kernel.dk Cc: ming.lei@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V3 0/4] blk-mq: refactor and fix on issue request directly Date: Mon, 29 Oct 2018 16:33:29 +0800 Message-Id: <1540802013-2921-1-git-send-email-jianchao.w.wang@oracle.com> X-Mailer: git-send-email 2.7.4 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9060 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=830 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810290082 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Jens The 1st patch refactors the code of issue request directly. It merges the blk_mq_try_issue_directly and __blk_mq_try_issue_directly and make it handle the return value of .queue_rq itself. The 2nd patch let the requests be inserted into hctx->dispatch when the queue is stopped or quiesced if bypass_insert is true. The 3rd patch make blk_mq_sched_insert_requests issue requests directly with 'bypass_insert' false, then it needn't to handle the non-issued requests any more. The 4th patch ensures the hctx to be ran on its mapped cpu in issue directly path. V3: - Correct the code about the case bypass_insert is true and io scheduler attached. The request still need to be issued in case above. (1/4) - Refactor the code to make code clearer. (1/4) - Add the 2nd patch. - Modify the code to adapt the new patch 1. V2: - Add 1st and 2nd patch Jianchao Wang(4) blk-mq: refactor the code of issue request directly blk-mq: insert request without involving any io blk-mq: issue directly with bypass_insert 'false' in blk-mq: ensure hctx to be ran on mapped cpu when issue block/blk-mq-sched.c | 8 ++- block/blk-mq.c | 139 ++++++++++++++++++++++++++++++--------------------- block/blk-mq.c.rej | 60 ++++++++++++++++++++++ 3 files changed, 146 insertions(+), 61 deletions(-)