On Thu, 2009-09-24 at 10:48 +1000, Benjamin Herrenschmidt wrote: > On Wed, 2009-09-02 at 07:33 +0200, Peter Zijlstra wrote: > > > > I'm still thinking this is a bad idea. > > > > The OS should only know about online/offline. > > > > Use the hypervisor interface to deal with the cpu once its offline. > > > > That is, I think this interface you propose is a layering violation. > > > I don't quite follow your logic here. This is useful for more than just > hypervisors. For example, take the HV out of the picture for a moment > and imagine that the HW has the ability to offline CPU in various power > levels, with varying latencies to bring them back.
cpu-hotplug is an utter slow path, anybody saying latency and hotplug in the same sentence doesn't seem to grasp either or both concepts. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
