Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933630AbcLGXKJ (ORCPT ); Wed, 7 Dec 2016 18:10:09 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:40637 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932354AbcLGXKH (ORCPT ); Wed, 7 Dec 2016 18:10:07 -0500 From: Jens Axboe To: , , CC: , , Jens Axboe Subject: [PATCH 1/7] blk-mq: add blk_mq_start_stopped_hw_queue() Date: Wed, 7 Dec 2016 16:09:55 -0700 Message-ID: <1481152201-27461-2-git-send-email-axboe@fb.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1481152201-27461-1-git-send-email-axboe@fb.com> References: <1481152201-27461-1-git-send-email-axboe@fb.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.54.13] X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-12-07_07:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1854 Lines: 57 We have a variant for all hardware queues, but not one for a single hardware queue. Signed-off-by: Jens Axboe --- block/blk-mq.c | 18 +++++++++++------- include/linux/blk-mq.h | 1 + 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 90db5b490df9..b216746be9d3 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1064,18 +1064,22 @@ void blk_mq_start_hw_queues(struct request_queue *q) } EXPORT_SYMBOL(blk_mq_start_hw_queues); +void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) +{ + if (!blk_mq_hctx_stopped(hctx)) + return; + + clear_bit(BLK_MQ_S_STOPPED, &hctx->state); + blk_mq_run_hw_queue(hctx, async); +} + void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async) { struct blk_mq_hw_ctx *hctx; int i; - queue_for_each_hw_ctx(q, hctx, i) { - if (!blk_mq_hctx_stopped(hctx)) - continue; - - clear_bit(BLK_MQ_S_STOPPED, &hctx->state); - blk_mq_run_hw_queue(hctx, async); - } + queue_for_each_hw_ctx(q, hctx, i) + blk_mq_start_stopped_hw_queue(hctx, async); } EXPORT_SYMBOL(blk_mq_start_stopped_hw_queues); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 35a0af5ede6d..87e404aae267 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -231,6 +231,7 @@ void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_stop_hw_queues(struct request_queue *q); void blk_mq_start_hw_queues(struct request_queue *q); +void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async); void blk_mq_run_hw_queues(struct request_queue *q, bool async); void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); -- 2.7.4