diff options
| author | Kashyap Desai <kashyap.desai@broadcom.com> | 2021-02-15 10:40:44 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-05 01:37:03 +0300 |
| commit | af1830956dc3dca0c87b2d679f7c91a8fe0331e1 (patch) | |
| tree | c8785a790eae473757002a5dddafe344a98cdbe9 /include/scsi/scsi_host.h | |
| parent | 39ae3edda325e9cf9e978c9788affe88231f3b34 (diff) | |
| download | linux-af1830956dc3dca0c87b2d679f7c91a8fe0331e1.tar.xz | |
scsi: core: Add mq_poll support to SCSI layer
Currently IOPOLL support is only available in block layer. This patch
adds mq_poll support to the SCSI layer.
Link: https://lore.kernel.org/r/20210215074048.19424-2-kashyap.desai@broadcom.com
Cc: sumit.saxena@broadcom.com
Cc: chandrakanth.patil@broadcom.com
Cc: linux-block@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index f0e8a9e73002..d95c1502e17d 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -281,6 +281,16 @@ struct scsi_host_template { int (* map_queues)(struct Scsi_Host *shost); /* + * SCSI interface of blk_poll - poll for IO completions. + * Only applicable if SCSI LLD exposes multiple h/w queues. + * + * Return value: Number of completed entries found. + * + * Status: OPTIONAL + */ + int (* mq_poll)(struct Scsi_Host *shost, unsigned int queue_num); + + /* * Check if scatterlists need to be padded for DMA draining. * * Status: OPTIONAL @@ -622,6 +632,7 @@ struct Scsi_Host { * the total queue depth is can_queue. */ unsigned nr_hw_queues; + unsigned nr_maps; unsigned active_mode:2; unsigned unchecked_isa_dma:1; |