lpfc: Add support for using block multi-queue
authorJames Smart <james.smart@avagotech.com>
Fri, 22 May 2015 14:42:38 +0000 (10:42 -0400)
committerJames Bottomley <JBottomley@Odin.com>
Sat, 13 Jun 2015 15:20:59 +0000 (08:20 -0700)
commit8b0dff14164d3f43eba8365950b506d898e0e1e6
tree06cd8324d0a8b2cfab5783e58cc7298c2a61347f
parent953ceeda97ddfed2c6e0bea3706257d57197f269
lpfc: Add support for using block multi-queue

With blk-mq support in the mid-layer, lpfc can do IO steering based
on the information in the request tag.  This patch allows lpfc to use
blk-mq if enabled. If not enabled, we fall back into the emulex-internal
affinity mappings.

This feature can be turned on via CONFIG_SCSI_MQ_DEFAULT or passing
scsi_mod.use_blk_mq=Y as a parameter to the kernel.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
drivers/scsi/lpfc/lpfc_init.c
drivers/scsi/lpfc/lpfc_scsi.c
drivers/scsi/lpfc/lpfc_scsi.h
drivers/scsi/lpfc/lpfc_sli.c