Re: 2.5.69 Interrupt Latency
Paul Fulghum (paulkf@microgate.com)
13 May 2003 08:01:01 -0500
On Tue, 2003-05-13 at 12:30, Greg KH wrote:
> On Tue, May 13, 2003 at 10:35:07AM -0500, Paul Fulghum wrote:
> > On Tue, 2003-05-13 at 10:26, Alan Stern wrote:
> >
> > > Putting in a sanity check for the global suspend state will be very easy.
> > > But I would like to point out that this "global suspend" does not refer to
> > > the entire system, only the USB bus.
> >
> > That is a problem then, because the delay can still
> > occur during normal system operation.
>
> Ok, can you try the attached patch and see if it causes your latency
> problem to go away?
I applied the patch plus a couple of printk statements,
and the wakeup_hc() is being continuously called
as well as actually executing the delay.
So the check is not preventing anything.
--
Paul Fulghum, paulkf@microgate.com
Microgate Corporation, http://www.microgate.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/