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Commit 7020a38e authored by Mayank Rana's avatar Mayank Rana
Browse files

usb: dwc3: debugfs: Dump out IRQ timing statistics 



This change helps to dump out different IRQ timing statistics
using debugfs entry.

Change-Id: I466144d8141f4236b9fb834dded93225b56d0422
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 0c667b42

drivers/usb/dwc3/debugfs.c

+18 −0
Original line number Diff line number Diff line
@@ -978,6 +978,24 @@ static int dwc3_gadget_int_events_show(struct seq_file *s, void *unused) 
		dbg_gadget_events->cmdcmplt);

	seq_printf(s, "unknown_event:%u\n", dbg_gadget_events->unknown_event);



	seq_printf(s, "\n\t== Last %d interrupts stats ==\t\n", MAX_INTR_STATS);

	seq_puts(s, "@ time (us):\t");

	for (i = 0; i < MAX_INTR_STATS; i++)

		seq_printf(s, "%lld\t", ktime_to_us(dwc->irq_start_time[i]));

	seq_puts(s, "\nhard irq time (us):\t");

	for (i = 0; i < MAX_INTR_STATS; i++)

		seq_printf(s, "%d\t", dwc->irq_completion_time[i]);

	seq_puts(s, "\nevents count:\t\t");

	for (i = 0; i < MAX_INTR_STATS; i++)

		seq_printf(s, "%d\t", dwc->irq_event_count[i]);

	seq_puts(s, "\nbh handled count:\t");

	for (i = 0; i < MAX_INTR_STATS; i++)

		seq_printf(s, "%d\t", dwc->bh_handled_evt_cnt[i]);

	seq_puts(s, "\nirq thread time (us):\t");

	for (i = 0; i < MAX_INTR_STATS; i++)

		seq_printf(s, "%d\t", dwc->bh_completion_time[i]);

	seq_putc(s, '\n');



	spin_unlock_irqrestore(&dwc->lock, flags);

	return 0;

}