netdev - Re: sungem triggers NAPI warning

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Date:	Fri, 22 Feb 2008 09:50:27 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	netdev@...r.kernel.org
Subject: Re: sungem triggers NAPI warning


On Thu, 2008-02-21 at 14:05 +0100, Johannes Berg wrote:
> On Thu, 2008-02-21 at 13:54 +1100, Benjamin Herrenschmidt wrote:
> > On Tue, 2008-02-19 at 22:38 +0100, Johannes Berg wrote:
> > > I started getting this warning with recent kernels:
> > 
> > Do that help ?
> > 
> > In gem_poll(), do:
> > 
> > -  work_done += gem_rx(gp, budget);
> > +  work_done += gem_rx(gp, budget - work_done);
> 
> That looks correct, but I haven't been able to trigger the warning again
> even with similar workloads so I haven't tested this change because I
> can't even reproduce without it.

I still think the change is obviously correct, so I'll give a second
close look at the code and produce a patch.

Ben.


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