Re: [PATCH] Extend lock less TX to real devices

To:	ak@xxxxxx (Andi Kleen)
Subject:	Re: [PATCH] Extend lock less TX to real devices
From:	Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Date:	Sun, 05 Sep 2004 05:39:19 +1000
Cc:	davem@xxxxxxxxxx, kuznet@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx, akepner@xxxxxxx
In-reply-to:	<20040904132809.GB33964@muc.de>
Organization:	Core
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Andi Kleen <ak@xxxxxx> wrote:
>
>> > I added support for trylocking instead of spinning like sch_generic
>> > does - for that the driver has to return -1, then the packet is requeued.
>> > The check for a local device deadlock is lost for this case, 
>> > but that doesn't seem to be a big loss (I've never seen this printk 
>> > ever get triggered)
>> 
>> It is triggerable if you misconfigure your system.
> 
> Really? The only reason I can see for it is a buggy driver.

Is this the dead loop message? If so it can happen with tunnels.
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