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cxgb4vf: Implement "Unhandled Interrupts" statistic

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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 <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Casey Leedom 2010-07-08 10:05:48 -07:00 committed by David S. Miller
parent fabc51a640
commit 68dc9d36c1
2 changed files with 8 additions and 3 deletions
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8
drivers/net/cxgb4vf/cxgb4vf_main.c
View File

@ -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);
}

3
drivers/net/cxgb4vf/sge.c
View File

@ -1772,6 +1772,9 @@ 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) |