linux-kernel - Re: USB disconnects every 30 seconds (2.6.27-rc8)

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Date:	Fri, 03 Oct 2008 15:46:15 -0700
From:	Dave Hansen <dave@...1.net>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Alan Stern <stern@...land.harvard.edu>, gregkh <gregkh@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: USB disconnects every 30 seconds (2.6.27-rc8)

On Sat, 2008-10-04 at 00:24 +0200, Thomas Gleixner wrote:
> On Fri, 3 Oct 2008, Alan Stern wrote:
> > On Fri, 3 Oct 2008, Dave Hansen wrote:
> > There are a number of other places in the trace where delays are
> > shorter than they should be.  This is out of my area of expertise, so 
> > I'm CC'ing Thomas Gleixner.  With luck he'll be able to help.
> > 
> > Thomas, the background for this problem is available here:
> > 
> > 	http://marc.info/?l=linux-kernel&m=122305738430115&w=2
> 
> Is NOHZ and HIGHRES disabled on those kernels? Hugh spotted a typo in
> that code today. Fix is below. It causes jiffies to increment too fast
> which explains your short delays.

Here's my config:

http://sr71.net/~dave/linux/config-10-03-2008.1.txt

No NOHZ or HIGHRES.  Is that what you meant?  

-- Dave

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