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| author | James Smart <jsmart2021@gmail.com> | 2017-06-01 21:07:10 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-12 21:37:31 -0400 |
| commit | 0cf07f84dd32639394084b9d6794424587a38789 (patch) | |
| tree | 7a87d71176fb3576d93c3b5cb34f557f55c04c50 /drivers/scsi/lpfc/lpfc_sli4.h | |
| parent | 78e1d2009f1c539a23f470728e530a3ce1d527e6 (diff) | |
| download | linux-stable-0cf07f84dd32639394084b9d6794424587a38789.tar.gz linux-stable-0cf07f84dd32639394084b9d6794424587a38789.tar.bz2 linux-stable-0cf07f84dd32639394084b9d6794424587a38789.zip | |
scsi: lpfc: Add auto EQ delay logic
Administrator intervention is currently required to get good numbers
when switching from running latency tests to IOPS tests.
The configured interrupt coalescing values will greatly effect the
results of these tests. Currently, the driver has a single coalescing
value set by values of the module attribute. This patch changes the
driver to support auto-configuration of the coalescing value based on
the total number of outstanding IOs and average number of CQEs processed
per interrupt for an EQ. Values are checked every 5 seconds.
The driver defaults to the automatic selection. Automatic selection can
be disabled by the new lpfc_auto_imax module_parameter.
Older hardware can only change interrupt coalescing by mailbox
command. Newer hardware supports change via a register. The patch
support both.
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>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 28b75e08e044..830dc83b9c21 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -168,7 +168,7 @@ struct lpfc_queue { struct lpfc_sli_ring *pring; /* ptr to io ring associated with q */ struct lpfc_rqb *rqbp; /* ptr to RQ buffers */ - uint16_t sgl_list_cnt; + uint32_t q_mode; uint16_t db_format; #define LPFC_DB_RING_FORMAT 0x01 #define LPFC_DB_LIST_FORMAT 0x02 @@ -181,7 +181,7 @@ struct lpfc_queue { /* defines for EQ stats */ #define EQ_max_eqe q_cnt_1 #define EQ_no_entry q_cnt_2 -#define EQ_badstate q_cnt_3 +#define EQ_cqe_cnt q_cnt_3 #define EQ_processed q_cnt_4 /* defines for CQ stats */ @@ -523,6 +523,7 @@ struct lpfc_sli4_hba { #define SLIPORT_ERR2_REG_FAILURE_CQ 0x4 #define SLIPORT_ERR2_REG_FAILURE_BUS 0x5 #define SLIPORT_ERR2_REG_FAILURE_RQ 0x6 + void __iomem *EQDregaddr; } if_type2; } u; @@ -755,7 +756,8 @@ struct lpfc_queue *lpfc_sli4_queue_alloc(struct lpfc_hba *, uint32_t, uint32_t); void lpfc_sli4_queue_free(struct lpfc_queue *); int lpfc_eq_create(struct lpfc_hba *, struct lpfc_queue *, uint32_t); -int lpfc_modify_hba_eq_delay(struct lpfc_hba *phba, uint32_t startq); +int lpfc_modify_hba_eq_delay(struct lpfc_hba *phba, uint32_t startq, + uint32_t numq, uint32_t imax); int lpfc_cq_create(struct lpfc_hba *, struct lpfc_queue *, struct lpfc_queue *, uint32_t, uint32_t); int lpfc_cq_create_set(struct lpfc_hba *phba, struct lpfc_queue **cqp, |