From: James Smart <james.smart@emulex.com>
To: linux-scsi@vger.kernel.org
Subject: [PATCH 13/21] lpfc 8.3.33: Add Interrupts per second stats via debugfs
Date: Fri, 3 Aug 2012 12:36:03 -0400 [thread overview]
Message-ID: <1344011763.6110.38.camel@myfc17> (raw)
Add Interrupts per second stats via debugfs
Signed-off-by: James Smart <james.smart@emulex.com>
---
lpfc_sli.c | 18 +++++++++++++++++-
lpfc_sli.h | 2 ++
2 files changed, 19 insertions(+), 1 deletion(-)
diff -upNr a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
--- a/drivers/scsi/lpfc/lpfc_sli.c 2012-07-23 15:26:06.443425608 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli.c 2012-07-23 15:30:43.182415997 -0400
@@ -2825,10 +2825,26 @@ lpfc_sli_rsp_pointers_error(struct lpfc_
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);
diff -upNr a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
--- a/drivers/scsi/lpfc/lpfc_sli.h 2012-07-23 15:26:06.449425608 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli.h 2012-07-23 15:26:18.519425189 -0400
@@ -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 */
reply other threads:[~2012-08-03 16:36 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1344011763.6110.38.camel@myfc17 \
--to=james.smart@emulex.com \
--cc=linux-scsi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox