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Sat, 20 Feb 2021 06:06:48 -0500 X-MC-Unique: 7Q0E90YIPKKex4mdxjo5QA-1 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R251e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04394; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=9; SR=0; TI=SMTPD_---0UP1N.EP_1613819202 Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UP1N.EP_1613819202) by smtp.aliyun-inc.com(127.0.0.1); Sat, 20 Feb 2021 19:06:43 +0800 From: Jeffle Xu To: snitzer@redhat.com, axboe@kernel.dk Date: Sat, 20 Feb 2021 19:06:30 +0800 Message-Id: <20210220110637.50305-6-jefflexu@linux.alibaba.com> In-Reply-To: <20210220110637.50305-1-jefflexu@linux.alibaba.com> References: <20210220110637.50305-1-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 10.11.54.6 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Mon, 22 Feb 2021 03:49:50 -0500 Cc: caspar@linux.alibaba.com, io-uring@vger.kernel.org, linux-block@vger.kernel.org, joseph.qi@linux.alibaba.com, dm-devel@redhat.com, ming.lei@redhat.com, hch@lst.de Subject: [dm-devel] [PATCH v4 05/12] blk-mq: extract one helper function polling 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 10.5.11.15 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 Extract the logic of polling one hw queue and related statistics handling out as the helper function. Signed-off-by: Jeffle Xu --- block/blk-mq.c | 5 +---- include/linux/blk-mq.h | 13 +++++++++++++ 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index c18bc23834a0..b4de2b37b826 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3850,11 +3850,8 @@ int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, bool spin) do { int ret; - hctx->poll_invoked++; - - ret = q->mq_ops->poll(hctx); + ret = blk_mq_poll_hctx(q, hctx); if (ret > 0) { - hctx->poll_success++; __set_current_state(TASK_RUNNING); return ret; } diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index adc789d5888e..cf1910c6d5ae 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -606,6 +606,19 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio, rq->rq_disk = bio->bi_disk; } +static inline int blk_mq_poll_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx) +{ + int ret; + + hctx->poll_invoked++; + ret = q->mq_ops->poll(hctx); + if (ret > 0) + hctx->poll_success++; + + return ret; +} + 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,