diff options
| author | Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> | 2014-06-16 19:37:22 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-06-19 15:49:26 -0400 |
| commit | be299858d0611ee9f43fab7fa6dbea8671748267 (patch) | |
| tree | 1aae9c6ad4319d3a227c8a9d7e37adea83ad885f /drivers/net/wireless/ath | |
| parent | 84bb29b7ab71daed9318073dd33632274373a1ea (diff) | |
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: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/debugfs.c | 11 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/interrupt.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wil6210.h | 1 |
3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 8bf00aca321b..94ac69a380b8 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -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; } diff --git a/drivers/net/wireless/ath/wil6210/interrupt.c b/drivers/net/wireless/ath/wil6210/interrupt.c index e4aba53c20e4..67f1002a03a1 100644 --- a/drivers/net/wireless/ath/wil6210/interrupt.c +++ b/drivers/net/wireless/ath/wil6210/interrupt.c @@ -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; } diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index fd6ff0926f3b..424906635f05 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -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; |