scsi: lpfc: Make ktime sampling more accurate

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Need to make ktime samples more accurate

If ktime is turned on in the middle of an IO, the max calculation could
be misleading. Base sampling on the start time of the IO as opposed to
ktime_on.

Make ISR ktime timestamps be from when CQE is read instead of EQE.
Added additional sanity checks when deciding whether to accept an IO
sample or not.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

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Dick Kennedy 2017-09-29 17:34:33 -07:00 • committed by Martin K. Petersen

parent e8bcf0ae4c

commit c8a4ce0bf3

3 changed files with 109 additions and 58 deletions

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34

drivers/scsi/lpfc/lpfc_nvme.c

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99

drivers/scsi/lpfc/lpfc_nvmet.c

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34

drivers/scsi/lpfc/lpfc_sli.c

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