[RFC PATCH v3 1/4] topology: add support for node_to_mem_node() to determine the fallback node

[Nishanth Aravamudan]

On 14.08.2014 [09:35:37 -0500], Christoph Lameter wrote:
> On Wed, 13 Aug 2014, Nishanth Aravamudan wrote:
> 
> > +++ b/include/linux/topology.h
> > @@ -119,11 +119,20 @@ static inline int numa_node_id(void)
> >   * Use the accessor functions set_numa_mem(), numa_mem_id() and cpu_to_mem().
> >   */
> >  DECLARE_PER_CPU(int, _numa_mem_);
> > +extern int _node_numa_mem_[MAX_NUMNODES];
> 
> Why are these variables starting with an _ ?
> Maybe _numa_mem was defined that way because it is typically not defined.
> We dont do this in other situations.

That's how it was in Joonsoo's patch and I was trying to minimize the
changes from his version (beyond making it compile). I can of course
update it to not have a prefixing _ if that's preferred.

Thanks,
Nish