scsi: mpt3sas: Introduce module parameter to override queue depth

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This patch provides a module parameter and sysfs interface to select
whether the queue depth for each device should be based on the
protocol-specific value set by the driver (the default) or the maximum
supported by the controller (can_queue).

Although we have a sysfs interface per sdev to change the queue depth
of individual scsi devices, this implementation provides a single
sysfs entry per shost to switch between the controller max and the
driver default.

[mkp: tweaked commit desc]

Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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This commit is contained in:

Sreekanth Reddy 2019-08-22 02:19:01 -04:00 • committed by Martin K. Petersen

parent dd93b14370

commit 8dc8d29a00

3 changed files with 140 additions and 4 deletions

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2

drivers/scsi/mpt3sas/mpt3sas_base.h

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102

drivers/scsi/mpt3sas/mpt3sas_ctl.c

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40

drivers/scsi/mpt3sas/mpt3sas_scsih.c

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