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=-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 5E66AC432C3 for ; Thu, 4 Mar 2021 00:26:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2687A64E68 for ; Thu, 4 Mar 2021 00:26:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382166AbhCDAYJ (ORCPT ); Wed, 3 Mar 2021 19:24:09 -0500 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:48176 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442110AbhCCL6d (ORCPT ); Wed, 3 Mar 2021 06:58:33 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=8;SR=0;TI=SMTPD_---0UQFn1IH_1614772667; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UQFn1IH_1614772667) by smtp.aliyun-inc.com(127.0.0.1); Wed, 03 Mar 2021 19:57:48 +0800 From: Jeffle Xu To: msnitzer@redhat.com, axboe@kernel.dk Cc: io-uring@vger.kernel.org, dm-devel@redhat.com, linux-block@vger.kernel.org, mpatocka@redhat.com, caspar@linux.alibaba.com, joseph.qi@linux.alibaba.com Subject: [PATCH v5 07/12] blk-mq: add one helper function getting hw queue Date: Wed, 3 Mar 2021 19:57:35 +0800 Message-Id: <20210303115740.127001-8-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210303115740.127001-1-jefflexu@linux.alibaba.com> References: <20210303115740.127001-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@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 6ef9f0b038c2..72390f208c82 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3902,6 +3902,16 @@ 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 d22269b3dbe9..149f6a9d9aa7 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -638,5 +638,7 @@ 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 -- 2.27.0