Re: [BUG] cpu-hotplug: Can't offline the CPU with naughty realtimeprocesses

[KAMEZAWA Hiroyuki]

On Mon, 07 May 2007 19:10:05 +0900
Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx> wrote:


> kstopmachine is created, bound to the CPU1, and woken up here, but
> this process can't start to run because reschedule doesn't occur on
> CPU1. Hence CPU0 also be able to run because it's waiting completion
> of CPU1's offline work.
> 
Is this Bug ? It seems the system works as designed... 

Hmm,  adding stop_machine_run_interruptible() and 
using wait_for_completion_interruptible() instead of wait_for_completion()
is O.K. ? Then we can stop cpu hot-unplug by signal. Is this okay for you ?

-Kame

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