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Wed, 03 Mar 2021 06:57:54 -0500 X-MC-Unique: yw8zKVbSN9yNqsmttyVzvw-1 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 Date: Wed, 3 Mar 2021 19:57:35 +0800 Message-Id: <20210303115740.127001-8-jefflexu@linux.alibaba.com> In-Reply-To: <20210303115740.127001-1-jefflexu@linux.alibaba.com> References: <20210303115740.127001-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Thu, 04 Mar 2021 09:41:43 -0500 Cc: caspar@linux.alibaba.com, linux-block@vger.kernel.org, joseph.qi@linux.alibaba.com, dm-devel@redhat.com, mpatocka@redhat.com, io-uring@vger.kernel.org Subject: [dm-devel] [PATCH v5 07/12] blk-mq: add one helper function getting hw queue X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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