From patchwork Sat Feb 20 11:06:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jingbo Xu X-Patchwork-Id: 12096791 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable 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 257B5C433E0 for ; Sat, 20 Feb 2021 11:08:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F1CFC64EDB for ; Sat, 20 Feb 2021 11:07:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229811AbhBTLHp (ORCPT ); Sat, 20 Feb 2021 06:07:45 -0500 Received: from out30-42.freemail.mail.aliyun.com ([115.124.30.42]:58447 "EHLO out30-42.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229803AbhBTLH1 (ORCPT ); Sat, 20 Feb 2021 06:07:27 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R201e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---0UP1AWdu_1613819204; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UP1AWdu_1613819204) by smtp.aliyun-inc.com(127.0.0.1); Sat, 20 Feb 2021 19:06:45 +0800 From: Jeffle Xu To: snitzer@redhat.com, axboe@kernel.dk Cc: hch@lst.de, ming.lei@redhat.com, linux-block@vger.kernel.org, dm-devel@redhat.com, io-uring@vger.kernel.org, joseph.qi@linux.alibaba.com, caspar@linux.alibaba.com Subject: [PATCH v4 07/12] blk-mq: add one helper function getting hw queue Date: Sat, 20 Feb 2021 19:06:32 +0800 Message-Id: <20210220110637.50305-8-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210220110637.50305-1-jefflexu@linux.alibaba.com> References: <20210220110637.50305-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add one helper function getting hw queue mapping to specific CPU, and of specific type. Signed-off-by: Jeffle Xu --- block/blk-mq.c | 10 ++++++++++ include/linux/blk-mq.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index b4de2b37b826..734aa1338b69 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3876,6 +3876,16 @@ unsigned int blk_mq_rq_cpu(struct request *rq) } EXPORT_SYMBOL(blk_mq_rq_cpu); + +struct blk_mq_hw_ctx *blk_mq_get_hctx(struct request_queue *q, int cpu, + unsigned int flags) +{ + struct blk_mq_ctx *ctx = __blk_mq_get_ctx(q, cpu); + + return blk_mq_map_queue(q, flags, ctx); +} +EXPORT_SYMBOL(blk_mq_get_hctx); + static int __init blk_mq_init(void) { int i; diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 0c511555ec16..9b6a5c1fcb2d 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -630,5 +630,7 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio); int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, bool spin); void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx, struct lock_class_key *key); +struct blk_mq_hw_ctx *blk_mq_get_hctx(struct request_queue *q, int cpu, + unsigned int flags); #endif