Re: [PATCH] Export URB statistics for powertop.

[Oliver Neukum <oliver@xxxxxxxxxx>]

Am Mittwoch 03 Oktober 2007 schrieb Sarah Sharp:
> --- a/drivers/usb/core/hcd.c
> +++ b/drivers/usb/core/hcd.c
> @@ -1174,6 +1174,7 @@ void usb_hcd_giveback_urb (struct usb_hcd *hcd, struct urb *urb)
>  {
>         urb_unlink(hcd, urb);
>         usbmon_urb_complete (&hcd->self, urb);
> +       atomic_inc(&urb->dev->urb_cnt);
>         usb_unanchor_urb(urb);
>  
>         /* pass ownership to the completion handler */

Every URB that is successfully submitted will pass through this
point. Using the correspondance you could move the
increment into usb_submit_urb(), which is less likely to run in
interrupt context.

	Regards
		Oliver

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