On 16 Jun 2006 11:14:57 +0200
Andi Kleen <[email protected]> wrote:
> KAMEZAWA Hiroyuki <[email protected]> writes:
> >
> > This is a bit pessimistic. But forecd migration of RT task which is bounded
> > to the special cpu will cause unpredictable trouble, I think.
>
> More trouble than running it on a CPU that is about to fail?
> Doubtful.
>
With my patch, RT tasks will continute to run.
Assume there are some multi-threaded tasks with SCHED_FIFO.
If they uses some kind of synchronization in user land and task is migrated to
other cpus, it will cause dead-lock.
> It seems like a case of "never check for an error you don't know
> how to handle"
>
"Dont' migrate a task which may fall in dead-lock if it run on another cpu."
-Kame
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