Commit 68dc9d36 authored by Casey Leedom's avatar Casey Leedom Committed by David S. Miller
Browse files

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: default avatarCasey Leedom <leedom@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fabc51a6

drivers/net/cxgb4vf/cxgb4vf_main.c

+5 −3
Original line number Diff line number Diff line
@@ -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);

	}

drivers/net/cxgb4vf/sge.c

+3 −0
Original line number Diff line number Diff line
@@ -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) |

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