From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Smart Subject: [PATCH 13/21] lpfc 8.3.33: Add Interrupts per second stats via debugfs Date: Fri, 3 Aug 2012 12:36:03 -0400 Message-ID: <1344011763.6110.38.camel@myfc17> Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from cmexedge1.ext.emulex.com ([138.239.224.99]:40330 "EHLO CMEXEDGE1.ext.emulex.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751514Ab2HCQgK (ORCPT ); Fri, 3 Aug 2012 12:36:10 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Add Interrupts per second stats via debugfs Signed-off-by: James Smart --- 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 */