Re: [PATCH 2/2] sched: prioritize non-migratable tasks over migratableones

Gregory Haskins
2008-04-23T13:11:21Z

>>> On Wed, Apr 23, 2008 at 8:58 AM, in message
<Pine.LNX.4.58.0804230854210.23815@gandalf.stny.rr.com>, Steven Rostedt
<rostedt@goodmis.org> wrote:

>
> I'm not giving an Ack on this patch (not yet). My main concern here is
> that this is performing on a verge of policy change. As you stated, this
> is a known issue. One that can be avoided by giving RT tasks different
> priorities. It is known that two tasks with the same priority fighting
> for the same CPUS (even if one is migratable and one is not) has
> non-deterministic behaviour.
>
> This patch needs a bit of running through the grind to see what effects it
> has before going in.

Perfectly reasonable stance, Steve. Thanks for the review!

-Greg