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Date: Tue, 22 Mar 2022 18:39:40 +0800 From: John Garry <john.garry@...wei.com> To: <axboe@...nel.dk>, <damien.lemoal@...nsource.wdc.com>, <bvanassche@....org>, <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>, <hch@....de>, <ming.lei@...hat.com>, <hare@...e.de> CC: <chenxiang66@...ilicon.com>, <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-ide@...r.kernel.org>, <linux-scsi@...r.kernel.org>, <dm-devel@...hat.com>, <beanhuo@...ron.com>, John Garry <john.garry@...wei.com> Subject: [PATCH 06/11] scsi: core: Add scsi_alloc_request_hwq() Add a variant of scsi_alloc_request() which allocates a request for a specific hw queue. Signed-off-by: John Garry <john.garry@...wei.com> --- drivers/scsi/scsi_lib.c | 12 ++++++++++++ include/scsi/scsi_cmnd.h | 3 +++ 2 files changed, 15 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index d230392f2b4a..543cc01b2816 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1137,6 +1137,18 @@ struct request *scsi_alloc_request(struct request_queue *q, } EXPORT_SYMBOL_GPL(scsi_alloc_request); +struct request *scsi_alloc_request_hwq(struct request_queue *q, + unsigned int op, blk_mq_req_flags_t flags, unsigned int hwq) +{ + struct request *rq; + + rq = blk_mq_alloc_request_hctx(q, op, flags, hwq); + if (!IS_ERR(rq)) + scsi_initialize_rq(rq); + return rq; +} +EXPORT_SYMBOL_GPL(scsi_alloc_request_hwq); + /* * Only called when the request isn't completed by SCSI, and not freed by * SCSI diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index ad4bcace1390..94e65f4c81b5 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -399,4 +399,7 @@ extern void scsi_build_sense(struct scsi_cmnd *scmd, int desc, struct request *scsi_alloc_request(struct request_queue *q, unsigned int op, blk_mq_req_flags_t flags); +struct request *scsi_alloc_request_hwq(struct request_queue *q, + unsigned int op, blk_mq_req_flags_t flags, unsigned int hwq); + #endif /* _SCSI_SCSI_CMND_H */ -- 2.26.2
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