Messages in this thread | | | Date | Mon, 20 Oct 2014 14:48:26 +0800 | From | Greg KH <> | Subject | Re: [PATCH] drivers: base: update cpu offline info when do hotplug |
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On Sun, Oct 19, 2014 at 11:39:23PM -0700, Neil Zhang wrote: >> How much noise is this going to cause on a big/little system that >> constantly hot unplug/plugs processors all of the time? > > Can you explain more what kind of noise will be introduced on a big/little system?
Have you tested this on such a machine?
> As I know IKS on arm will use cpu_suspend way to power down a core.
Are you sure that it also doesn't use that same functionality to drop a processor to save power?
Why do you need/want this notification? What are you going to do with this information that you don't already have?
thanks,
greg k-h
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