From mboxrd@z Thu Jan 1 00:00:00 1970 From: Casey Leedom Subject: [PATCH net-next] cxgb4vf: Implement "Unhandled Interrupts" statistic Date: Thu, 8 Jul 2010 11:07:44 -0700 Message-ID: <201007081107.45287.leedom@chelsio.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT To: netdev@vger.kernel.org Return-path: Received: from stargate.chelsio.com ([67.207.112.58]:10047 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754075Ab0GHSRQ convert rfc822-to-8bit (ORCPT ); Thu, 8 Jul 2010 14:17:16 -0400 Received: from maui.asicdesigners.com (maui.asicdesigners.com [10.192.180.15]) by stargate.chelsio.com (8.13.1/8.13.1) with SMTP id o68IHHrn004561 for ; Thu, 8 Jul 2010 11:17:17 -0700 Sender: netdev-owner@vger.kernel.org List-ID: >>From 6c9cc1b5441afb32ecfcd10ac3060452e3c4df6f Mon Sep 17 00:00:00 2001 From: Casey Leedom Date: Thu, 8 Jul 2010 10:05:48 -0700 Subject: [PATCH net-next] cxgb4vf: Implement "Unhandled Interrupts" statistic Implement "Unhandled Interrupts" statistic so we can detect when the hardware tells us that it things we have work to do but we don't find anything ... Signed-off-by: Casey Leedom --- drivers/net/cxgb4vf/cxgb4vf_main.c | 8 +++++--- drivers/net/cxgb4vf/sge.c | 3 +++ 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c index bd73ff5..e988031 100644 --- a/drivers/net/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/cxgb4vf/cxgb4vf_main.c @@ -1790,7 +1790,7 @@ static int sge_qstats_show(struct seq_file *seq, void *v) (rxq[qs].rspq.netdev ? rxq[qs].rspq.netdev->name : "N/A")); - R3("u", "RspQNullInts", rspq.unhandled_irqs); + R3("u", "RspQNullInts:", rspq.unhandled_irqs); R("RxPackets:", stats.pkts); R("RxCSO:", stats.rx_cso); R("VLANxtract:", stats.vlan_ex); @@ -1814,14 +1814,16 @@ static int sge_qstats_show(struct seq_file *seq, void *v) const struct sge_rspq *evtq = &adapter->sge.fw_evtq; seq_printf(seq, "%-8s %16s\n", "QType:", "FW event queue"); - /* no real response queue statistics available to display */ + seq_printf(seq, "%-16s %8u\n", "RspQNullInts:", + evtq->unhandled_irqs); seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", evtq->cidx); seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", evtq->gen); } else if (r == 1) { const struct sge_rspq *intrq = &adapter->sge.intrq; seq_printf(seq, "%-8s %16s\n", "QType:", "Interrupt Queue"); - /* no real response queue statistics available to display */ + seq_printf(seq, "%-16s %8u\n", "RspQNullInts:", + intrq->unhandled_irqs); seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", intrq->cidx); seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", intrq->gen); } diff --git a/drivers/net/cxgb4vf/sge.c b/drivers/net/cxgb4vf/sge.c index 3a7c02f..5c6663a 100644 --- a/drivers/net/cxgb4vf/sge.c +++ b/drivers/net/cxgb4vf/sge.c @@ -1776,6 +1776,9 @@ static int napi_rx_handler(struct napi_struct *napi, int budget) } else intr_params = QINTR_TIMER_IDX(SGE_TIMER_UPD_CIDX); + if (unlikely(work_done == 0)) + rspq->unhandled_irqs++; + t4_write_reg(rspq->adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS, CIDXINC(work_done) | -- 1.7.0.4