We're quite interested to see how effective our NUMA allocation
strategies are, and how fragmented things get.  The following patch
modifies /proc/<pid>/maps to display the number of pages each map has
allocated on each node of the system.

This should have few effects on non-numa machines.  It's aimed at
Martin's tree for now, but I figured I'd cc linux-mm just in case any
one else was interested.

Tested on 4-node 16-way NUMA-Q and 4-way SMP.
-- 
Dave Hansen
haveblue@us.ibm.com