linux-kernel - Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses)

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Message-ID: <1362819234.1220.1.camel@localhost.localdomain>
Date:	Sat, 09 Mar 2013 09:53:54 +0100
From:	Thomas Meyer <thomas@...3r.de>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Shawn Starr <shawn.starr@...ers.com>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: [3.9-rc1] irq 16: nobody cared  (was [3.9-rc1] very poor
 interrupt responses)

Am Freitag, den 08.03.2013, 21:19 -0500 schrieb Alan Stern:
> On Fri, 8 Mar 2013, Peter Hurley wrote:
> 
> > [ +linux-usb ]
> > 
> > On Fri, 2013-03-08 at 14:12 -0500, Shawn Starr wrote:
> > > Hello folks,
> > > 
> > > I am noticing since rc0 and now rc1, very poor interrupt handling. Keyboard response, mouse movements, display refreshing etc. General input/display sluggishness. Did something break IRQ handling somewhere? I need to validate if this happens with X not running also if it is i915 related somehow. The behavor is noticed in a console login however.
> > > 
> > > Device: Lenovo W500 laptop
> > 
> > Hi Shawn,
> > 
> > Unhandled interrupts is the problem.
> > 
> > Is the device below being id'd properly?
> > If you remove this device, does the problem go away?
> 
> Does either of the kernels in question have commit 0f815a0a700b (USB:
> UHCI: fix IRQ race during initialization)?  That commit was added to
> fix precisely this sort of thing.

I think so:

$ git describe
v3.9-rc1-211-g47b3bc9

$ git branch --contains 0f815a0a700b
* master

> 
> Alan Stern
> 



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