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2a5b7d626e
linux/drivers/scsi/lpfc
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James Smart 2a5b7d626e scsi: lpfc: Limit tracking of tgt queue depth in fast path 
Performance is affected when target queue depth is tracked.  An atomic
counter is incremented on the submission path which competes with it being
decremented on the completion path.  In addition, multiple CPUs can
simultaniously be manipulating this counter for the same ndlp.

Reduce the overhead by only performing the target increment/decrement when
the target queue depth is less than the overall adapter depth, thus is
actually meaningful.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-08-02 15:45:19 -04:00
..
lpfc_attr.c scsi: lpfc: Fix sysfs Speed value on CNA ports 2018-08-02 15:45:18 -04:00
lpfc_attr.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_bsg.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_bsg.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_compat.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_crtn.h scsi: lpfc: remove ScsiResult macro 2018-07-10 22:42:47 -04:00
lpfc_ct.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_debugfs.c scsi: lpfc: Comment cleanup regarding Broadcom copyright header 2018-05-08 01:03:16 -04:00
lpfc_debugfs.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_disc.h scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_els.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_hbadisc.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_hw4.h scsi: lpfc: Support duration field in Link Cable Beacon V1 command 2018-07-10 22:15:09 -04:00
lpfc_hw.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_ids.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_init.c scsi: lpfc: Support duration field in Link Cable Beacon V1 command 2018-07-10 22:15:09 -04:00
lpfc_logmsg.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_mbox.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_mem.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_nl.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_nportdisc.c scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_nvme.c scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_nvme.h scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_nvmet.c scsi: lpfc: remove null check on nvmebuf 2018-07-30 23:17:53 -04:00
lpfc_nvmet.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_scsi.c scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_scsi.h scsi: lpfc: Limit tracking of tgt queue depth in fast path 2018-08-02 15:45:19 -04:00
lpfc_sli4.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_sli.c scsi: lpfc: Fix ELS abort on SLI-3 adapters 2018-08-02 15:45:18 -04:00
lpfc_sli.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_version.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_vport.c scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc_vport.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
lpfc.h scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00
Makefile scsi: lpfc: Revise copyright for new company language 2018-07-10 22:15:09 -04:00