On Tue, 29 Nov 2005 11:31:52 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:

> > I tried getting a usbmon trace while doing an insmod of uhci-hcd.ko but
> > there's a chicken and egg scenario, /sys/kernel/debug needs to be
> > mounted before a usbmon snapshot is taken, but it can't be mounted
> > unless uhci-hcd.ko is loaded first.
> 
> Well, that's not _quite_ right.  You can mount /sys/kernel/debug any time 
> you want, and you can modprobe usbmon which will add the .../mon 
> subdirectory.  But the file you need to read won't exist until uhci-hcd is 
> loaded.

I see. I think I can add a "bus 0" for such a case, which would aggregate
traffic on all buses. However, I'd like more general interest for such
a feature. This printer thing seems too singular.

-- Pete


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