Re: [PATCH] [5/6] scheduler: Protect important kernel threads against normalize_rt

On Monday 08 October 2007 14:43:50 Ingo Molnar wrote:
> 
> * Andi Kleen <[email protected]> wrote:
> 
> > softlockup is the same. Just think about it.
> > 
> > If you ever renormalize it and then run a fifo thread it will starve 
> > and then eventually kill the box.
> > 
> > And starving CPU unplug is also equally bad.
> 
> yeah, agreed. I ended up doing the change below.

I considered doing it this way too. But it means that if keventd
(or another workqueue thread) starts looping for some reason you cannot renormalize it.
Might be not a good thing and impact debuggability. I think it's better to only 
protect special threads.

-Andi
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---

• References:
  • [PATCH] [0/6] Some scheduler changes for sched-devel
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH] [5/6] scheduler: Protect important kernel threads against normalize_rt
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH] [5/6] scheduler: Protect important kernel threads against normalize_rt
    • From: Ingo Molnar <[email protected]>

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