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| author | James Smart <jsmart2021@gmail.com> | 2021-12-03 16:26:41 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-12-06 22:35:37 -0500 |
| commit | a6269f837045acb02904f31f05acde847ec8f8a7 (patch) | |
| tree | d9597e7de84f6c4260d008621129a64d43c582b2 /drivers/scsi/lpfc/lpfc_init.c | |
| parent | 7dd2e2a923173d637c272e483966be8e96a72b64 (diff) | |
| download | linux-a6269f837045acb02904f31f05acde847ec8f8a7.tar.gz linux-a6269f837045acb02904f31f05acde847ec8f8a7.tar.bz2 linux-a6269f837045acb02904f31f05acde847ec8f8a7.zip | |
scsi: lpfc: Adjust CMF total bytes and rxmonitor
Calculate any extra bytes needed to account for timer accuracy. If we are
less than LPFC_CMF_INTERVAL, then calculate the adjustment needed for total
to reflect a full LPFC_CMF_INTERVAL.
Add additional info to rxmonitor, and adjust some log formatting.
Link: https://lore.kernel.org/r/20211204002644.116455-7-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 7628b0634c57..132f2e60bdb4 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -5927,7 +5927,7 @@ lpfc_cmf_timer(struct hrtimer *timer) uint32_t io_cnt; uint32_t head, tail; uint32_t busy, max_read; - uint64_t total, rcv, lat, mbpi, extra; + uint64_t total, rcv, lat, mbpi, extra, cnt; int timer_interval = LPFC_CMF_INTERVAL; uint32_t ms; struct lpfc_cgn_stat *cgs; @@ -5998,20 +5998,23 @@ lpfc_cmf_timer(struct hrtimer *timer) /* Calculate any extra bytes needed to account for the * timer accuracy. If we are less than LPFC_CMF_INTERVAL - * add an extra 3% slop factor, equal to LPFC_CMF_INTERVAL - * add an extra 2%. The goal is to equalize total with a - * time > LPFC_CMF_INTERVAL or <= LPFC_CMF_INTERVAL + 1 + * calculate the adjustment needed for total to reflect + * a full LPFC_CMF_INTERVAL. */ - if (ms == LPFC_CMF_INTERVAL) - extra = div_u64(total, 50); - else if (ms < LPFC_CMF_INTERVAL) - extra = div_u64(total, 33); + if (ms && ms < LPFC_CMF_INTERVAL) { + cnt = div_u64(total, ms); /* bytes per ms */ + cnt *= LPFC_CMF_INTERVAL; /* what total should be */ + if (cnt > mbpi) + cnt = mbpi; + extra = cnt - total; + } lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total + extra); } else { /* For Monitor mode or link down we want mbpi * to be the full link speed */ mbpi = phba->cmf_link_byte_count; + extra = 0; } phba->cmf_timer_cnt++; @@ -6042,6 +6045,7 @@ lpfc_cmf_timer(struct hrtimer *timer) LPFC_RXMONITOR_TABLE_IN_USE); entry = &phba->rxtable[head]; entry->total_bytes = total; + entry->cmf_bytes = total + extra; entry->rcv_bytes = rcv; entry->cmf_busy = busy; entry->cmf_info = phba->cmf_active_info; |