[openib-general] Re: [PATCH]: was Re: LLTX and netif_stop_queue

[Andi Kleen]

On Wed, Jan 26, 2005 at 10:32:47PM -0800, David S. Miller wrote:
> On Wed, 26 Jan 2005 14:25:12 +0100
> Lennert Buytenhek <buytenh at wantstofly.org> wrote:
> 
> > I've thought about this a bit, and the only sane way of doing recursion
> > detection that doesn't involve 'struct net_device' would be to keep track
> > of the recursion depth (perhaps per-CPU as you suggest) and tossing the
> > packet when it exceeds some random value, right?
> 
> Yes, that's the idea.

per CPU only works in preemptive kernel if you have preemption
disabled all the time. Do you? 

Seems not likely to me.

-Andi