linux-kernel - Re: [00/03] [RFC] USB debugging rework

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Message-ID: <20080809233600.GC7574@frodo>
Date:	Sun, 10 Aug 2008 02:36:01 +0300
From:	Felipe Balbi <me@...ipebalbi.com>
To:	Frans Pop <elendil@...net.nl>
Cc:	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [00/03] [RFC] USB debugging rework

On Sun, Aug 10, 2008 at 12:57:58AM +0200, Frans Pop wrote:
> Greg KH wrote:
> > I've been annoyed for a long time that we make users go off and rebuild
> > their kernels just to enable usb debug messages.  So finally, here's the
> > start of fixing that issue.
> 
> Will your patches also allow to turn off the usb debugging at some point, 
> for example after system boot has been completed if the debugging was 
> only needed to analyze a boot issue?
> 
> I noticed earlier this week that USB debugging will really flood the 
> syslog and had to rebuild my -rc2 kernel without debugging and reboot to 
> get rid of it. AFAICT with your patches only rebooting would be needed, 
> but it would be even nicer if it also could be turned off (and on?) using 
> a sysfs parameter.

no rebooting. Just rmmod and modprobe again with the parameter set to 0,
although a sysfs file would be nice, or maybe allowing the
/sys/module/*/parameters/* to be writable :-)

I think that should be done in driver core.

-- 
balbi
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