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Commit be299858 authored by Vladimir Kondratiev's avatar Vladimir Kondratiev Committed by John W. Linville
Browse files

wil6210: interrupt statistics 



Track number of interrupts and Tx/Rx packets;
expose through debugfs 'info'. Reset upon read.
Used to analyse effectivness of interrupt coalescing and NAPI.
Read twice with some interval like
cat info > /dev/null; sleep 1; cat info

Signed-off-by: default avatarVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 84bb29b7

drivers/net/wireless/ath/wil6210/debugfs.c

+11 −0
Original line number Diff line number Diff line
@@ -851,10 +851,21 @@ static const struct file_operations fops_link = { 
/*---------info------------*/

static int wil_info_debugfs_show(struct seq_file *s, void *data)

{

	struct wil6210_priv *wil = s->private;

	struct net_device *ndev = wil_to_ndev(wil);

	int is_ac = power_supply_is_system_supplied();

	int rx = atomic_xchg(&wil->isr_count_rx, 0);

	int tx = atomic_xchg(&wil->isr_count_tx, 0);

	static ulong rxf_old, txf_old;

	ulong rxf = ndev->stats.rx_packets;

	ulong txf = ndev->stats.tx_packets;



	/* >0 : AC; 0 : battery; <0 : error */

	seq_printf(s, "AC powered : %d\n", is_ac);

	seq_printf(s, "Rx irqs:packets : %8d : %8ld\n", rx, rxf - rxf_old);

	seq_printf(s, "Tx irqs:packets : %8d : %8ld\n", tx, txf - txf_old);

	rxf_old = rxf;

	txf_old = txf;



	return 0;

}

drivers/net/wireless/ath/wil6210/interrupt.c

+2 −0
Original line number Diff line number Diff line
@@ -208,6 +208,7 @@ static irqreturn_t wil6210_irq_rx(int irq, void *cookie) 


	/* Rx IRQ will be enabled when NAPI processing finished */



	atomic_inc(&wil->isr_count_rx);

	return IRQ_HANDLED;

}
@@ -246,6 +247,7 @@ static irqreturn_t wil6210_irq_tx(int irq, void *cookie) 


	/* Tx IRQ will be enabled when NAPI processing finished */



	atomic_inc(&wil->isr_count_tx);

	return IRQ_HANDLED;

}

drivers/net/wireless/ath/wil6210/wil6210.h

+1 −0
Original line number Diff line number Diff line
@@ -412,6 +412,7 @@ struct wil6210_priv { 
	struct mutex mutex; /* for wil6210_priv access in wil_{up|down} */

	/* statistics */

	struct wil6210_stats stats;

	atomic_t isr_count_rx, isr_count_tx;

	/* debugfs */

	struct dentry *debug;

	struct debugfs_blob_wrapper fw_code_blob;