Re: [BUG] cpu-hotplug: Can't offline the CPU with naughtyrealtime processes

[Rusty Russell]

On Tue, 2007-05-08 at 11:41 +0900, Satoru Takeuchi wrote:
> At Mon, 07 May 2007 23:42:53 +1000,
> Rusty Russell wrote:
> > I look forward to your patch!
> > Rusty.
> 
> Thanks, I'll do. Maybe this work will take several days including test.

Excellent.

> BTW, how should I manage rt process having max priority as Gautham said?
> He said that it's OK unless such kernel thread exists. However, currently
> MAX_USER_RT_PRIORITY is equal to MAX_RT_PRIO, so user process also be able
> to cause this problem. Is Srivatsa's idea 2 acceptable? Or just apply
> "Shouldn't abuse highest rt proority" rule?

We used to be able to create kernel threads higher than any userspace
priority.  If this is no longer true, I think that's OK: equal priority
still means we'll get scheduled, right?

Cheers,
Rusty.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/