Re: [PATCH RFC tip/core/rcu 6/6] rcu: Reduce cache-missinitialization latencies for large systems

[Paul E. McKenney]

On Thu, Apr 26, 2012 at 09:47:44PM +0200, Peter Zijlstra wrote:
> On Thu, 2012-04-26 at 21:41 +0200, Peter Zijlstra wrote:
> > 
> > I can very easily give you the size (nr cpus in) a node, still as long
> > as you iterate the cpu space linearly that's not going to be much
> > help.
> > 
> Oh, I forgot, the numa masks etc are available, depending on
> CONFIG_NUMA, as cpumask_of_node(n).

These change with each CPU-hotplug operation?  Or is a given CPU
hotplug operation guaranteed to change only those node masks that
the CPU was (or will be, in the case of online) a member?

							Thanx, Paul

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