Messages in this thread | | | Subject | Re: [PATCH 04/40] sched: implement __set_cpus_allowed() | From | Peter Zijlstra <> | Date | Wed, 20 Jan 2010 09:59:00 +0100 |
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On Wed, 2010-01-20 at 18:00 +0900, Tejun Heo wrote: > Hello, > > On 01/20/2010 05:50 PM, Peter Zijlstra wrote: > > OK, so maybe I'm confused, but in general the workqueue thing needs to > > ensure work affinity, right? So why can we move the rescue thread while > > its processing another CPU's works? > > It doesn't get moved directly. The CPU requests rescuer and rescuer > will move itself to the CPU when it becomes idle. We can of course > make the rescuer wake up some other thread and then go to sleep and > the other thread can kthread_bind() the rescuer to the dying CPU but > that exactly is what the set_cpus_allowed_ptr() does.
Ah, ok I thought it was all mitigated through the management thread.
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