Re: [PATCH 2/2] cpuhotplug: introduce try_get_online_cpus()

[Rusty Russell]

On Sat, 30 May 2009 06:01:18 am Andrew Morton wrote:
> I do think that we should look at
> alternative (non-trylocky) ways of fixing them.

Speculating: we could add a "keep_cpu()" (FIXME: improve name) which is kind 
of like get_cpu() only doesn't disable preemption and only stops *this* cpu 
from going down.

Not sure where that gets us, but if someone's going to dig deep into this it 
might help.

Thanks,
Rusty.
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