Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature

From: Steven Rostedt
Date: Mon Nov 07 2016 - 13:32:15 EST


On Mon, 7 Nov 2016 10:55:38 -0600 (CST)
Christoph Lameter <cl@xxxxxxxxx> wrote:

> On Mon, 7 Nov 2016, Daniel Bristot de Oliveira wrote:
>
> > With these two options set, the user will guarantee some runtime
> > for non-rt-tasks on all CPUs, while keeping real-time tasks running
> > as much as possible.
>
> Excellent this would improve the situation with deadlocks as a result of
> cgroup_locks not being released due to lack of workqueue processing.

?? What deadlocks do you see? I mean, can you show the situation that
throttling RT tasks will cause deadlock?

Sorry, but I'm just not seeing it.

-- Steve