From: John Garry <john.garry@huawei.com>
To: <axboe@kernel.dk>, <damien.lemoal@opensource.wdc.com>,
<bvanassche@acm.org>, <jejb@linux.ibm.com>,
<martin.petersen@oracle.com>, <hch@lst.de>, <ming.lei@redhat.com>,
<hare@suse.de>
Cc: <chenxiang66@hisilicon.com>, <linux-block@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-ide@vger.kernel.org>,
<linux-scsi@vger.kernel.org>, <dm-devel@redhat.com>,
<beanhuo@micron.com>, John Garry <john.garry@huawei.com>
Subject: [PATCH 06/11] scsi: core: Add scsi_alloc_request_hwq()
Date: Tue, 22 Mar 2022 18:39:40 +0800 [thread overview]
Message-ID: <1647945585-197349-7-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1647945585-197349-1-git-send-email-john.garry@huawei.com>
Add a variant of scsi_alloc_request() which allocates a request for a
specific hw queue.
Signed-off-by: John Garry <john.garry@huawei.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
next prev parent reply other threads:[~2022-03-22 10:46 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-22 10:39 [PATCH RFC 00/11] blk-mq/libata/scsi: SCSI driver tagging improvements John Garry
2022-03-22 10:39 ` [PATCH 01/11] blk-mq: Add blk_mq_init_queue_ops() John Garry
2022-03-22 11:18 ` Christoph Hellwig
2022-03-22 11:33 ` John Garry
2022-03-22 12:16 ` Hannes Reinecke
2022-03-22 12:30 ` John Garry
2022-03-22 14:03 ` Hannes Reinecke
2022-03-22 15:17 ` John Garry
2022-03-22 15:31 ` Hannes Reinecke
2022-03-23 2:57 ` Bart Van Assche
2022-03-23 9:01 ` John Garry
2022-03-22 10:39 ` [PATCH 02/11] scsi: core: Add SUBMITTED_BY_SCSI_CUSTOM_OPS John Garry
2022-03-22 11:20 ` Christoph Hellwig
2022-03-22 10:39 ` [PATCH 03/11] libata: Send internal commands through the block layer John Garry
2022-03-22 11:20 ` Christoph Hellwig
2022-03-22 11:36 ` John Garry
2022-04-07 14:32 ` John Garry
2022-03-22 10:39 ` [PATCH 04/11] scsi: libsas: Send SMP " John Garry
2022-03-22 11:23 ` Christoph Hellwig
2022-03-22 14:37 ` John Garry
2022-03-22 10:39 ` [PATCH 05/11] scsi: libsas: Send TMF " John Garry
2022-03-22 10:39 ` John Garry [this message]
2022-03-22 10:39 ` [PATCH 07/11] scsi: libsas: Send internal abort " John Garry
2022-03-22 10:39 ` [PATCH 08/11] scsi: libsas: Change ATA support to deal with each qc having a SCSI command John Garry
2022-03-22 10:39 ` [PATCH 09/11] scsi: libsas: Add sas_task_to_unique_tag() John Garry
2022-03-22 10:39 ` [PATCH 10/11] scsi: libsas: Add sas_task_to_hwq() John Garry
2022-03-22 10:39 ` [PATCH 11/11] scsi: hisi_sas: Remove private tag management John Garry
2022-03-22 11:30 ` [PATCH RFC 00/11] blk-mq/libata/scsi: SCSI driver tagging improvements Hannes Reinecke
2022-03-22 12:17 ` John Garry
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