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On 16 Jun 2006 11:14:57 +0200 Andi Kleen <ak@suse.de> wrote: > KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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