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scsi: mpi3mr: Resource Based Metering

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Update driver to track cumulative pending large data size at the controller
level and at the throttle group level.  When one of the values meet or
exceed the controller's firmware-determined high threshold value, then the
driver will divert future selective I/O to the firmware. Once both
controller level and at the throttle group level cumulative pending large
data size reach controller's firmware determined low threshold value, then
the driver will stop diverting I/Os to the firmware.

Link: https://lore.kernel.org/r/20220708195020.8323-2-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Sreekanth Reddy 2022-07-09 01:20:19 +05:30 • committed by Martin K. Petersen
commit f10af05732
3 changed files with 280 additions and 10 deletions
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