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SubjectRe: [PATCH] flush_cpu_workqueue: don't flush an empty ->worklist
On Tue, Jan 09, 2007 at 07:38:15PM +0300, Oleg Nesterov wrote:
> We can't do this. We should thaw cwq->thread (which was bound to the
> dead CPU) to complete CPU_DEAD event. So we still need some changes.

I noticed that, but I presumed kthread_stop() will post a wakeup which
will bring it out of frozen state. Looking at refrigerator(), I realize
that is not possible.

So CPU_DEAD should do a thaw_process on the kthread before doing a

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