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[SCSI] lpfc 8.3.33: Add Interrupts per second stats via debugfs

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Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2012-08-03 12:36:03 -04:00 committed by James Bottomley
parent 2a76a28314
commit aa6fbb757a
2 changed files with 19 additions and 1 deletions
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18
drivers/scsi/lpfc/lpfc_sli.c
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@ -2825,10 +2825,26 @@ lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
void lpfc_poll_eratt(unsigned long ptr)
{
struct lpfc_hba *phba;
uint32_t eratt = 0;
uint32_t eratt = 0, rem;
uint64_t sli_intr, cnt;
phba = (struct lpfc_hba *)ptr;
/* Here we will also keep track of interrupts per sec of the hba */
sli_intr = phba->sli.slistat.sli_intr;
if (phba->sli.slistat.sli_prev_intr > sli_intr)
cnt = (((uint64_t)(-1) - phba->sli.slistat.sli_prev_intr) +
sli_intr);
else
cnt = (sli_intr - phba->sli.slistat.sli_prev_intr);
/* 64-bit integer division not supporte on 32-bit x86 - use do_div */
rem = do_div(cnt, LPFC_ERATT_POLL_INTERVAL);
phba->sli.slistat.sli_ips = cnt;
phba->sli.slistat.sli_prev_intr = sli_intr;
/* Check chip HA register for error event */
eratt = lpfc_sli_check_eratt(phba);

2
drivers/scsi/lpfc/lpfc_sli.h
View File

@ -255,6 +255,8 @@ struct lpfc_sli_stat {
uint64_t mbox_stat_err; /* Mbox cmds completed status error */
uint64_t mbox_cmd; /* Mailbox commands issued */
uint64_t sli_intr; /* Count of Host Attention interrupts */
uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */
uint64_t sli_ips; /* Host Attention interrupts per sec */
uint32_t err_attn_event; /* Error Attn event counters */
uint32_t link_event; /* Link event counters */
uint32_t mbox_event; /* Mailbox event counters */