Re: [PATCH 01/40] sched: consult online mask instead of active inselect_fallback_rq()

From: Peter Zijlstra
Date: Mon Jan 18 2010 - 05:15:21 EST

On Mon, 2010-01-18 at 09:57 +0900, Tejun Heo wrote:
> If called after sched_class chooses a CPU which isn't in a task's
> cpus_allowed mask,

I can only see this happening when you're changing cpus_allowed after
starting to take down the cpu. IOW you're moving a thread to a dying

This is because you're spawning workqueue threads while we're going

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