Re: PREEMPT_RT with e1000

[Ingo Molnar]

* Daniel Walker <dwalker@xxxxxxxxxx> wrote:

> It looks like Gigabit Ethernet is still having some problems. This is 
> with the e1000 driver. If I remove all the qdisc_restart changes it 
> starts to work the warning below goes away, but it has 
> smp_processor_id warnings.

hmmm. The thing to watch out for there is dev->xmit_lock_owner - it's a 
"spin lock does not preempt" assumption that is open-coded. What the 
qdisc_restart changes do is to remove this assumption. Perhaps it would 
be enough to just keep the trylock logic, and to mute the 
xmit_lock_owner logic.

	Ingo
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