Re: [PATCH 2/2] cpuhotplug: make get_online_cpus() scalability byusing percpu counter

[Peter Zijlstra]

On Mon, 2010-04-12 at 20:30 +0800, Lai Jiangshan wrote:
> Because read-preference RWL will cause write site starvation.

Sure, but why is that a problem? Hotplug should be a rare event, who
cares if it takes a while to come through.


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