Re: [PATCH RT] net: move xmit_recursion to per-task variable on -RT

[Eric Dumazet]

On Thu, 2016-01-14 at 23:02 +0100, Hannes Frederic Sowa wrote:

> We are just adding a second recursion limit solely to openvswitch which 
> has the same problem:
> 
> https://patchwork.ozlabs.org/patch/566769/
> 
> This time also we depend on rcu_read_lock marking the section being 
> nonpreemptible. Nice would be a more generic solution here which doesn't 
> need to always add something to *current.


Note that rcu_read_lock() does not imply that preemption is disabled.