Re: [RFC] patch to /proc/meminfo to display NUMA stats

[Christoph Hellwig]

On Mon, Apr 22, 2002 at 10:05:19AM -0700, Martin J. Bligh wrote:
> Below is a patch to /proc/meminfo to display free, used and total
> memory per node on a NUMA machine. It works fine on an ia32
> machine, but is not yet ready for submission until I make it generic.
> Before I go to the effort of doing that, I thought I'd seek some feedback.
> 
> Comments?

Sure.  First I wonder whether it would be possible to kill nr_free_pages()
and nr_free_highpages() (or infact all of the nr_free*page() functions)
in favour of the per-node ones, externalizing the for loop.  Or if there
are to many users at least make them use the per-node version.
Second I wonder whether nr_free_pages_node() and nr_free_highpages_node()
should take a pgdat instead of a node id as the caller has it around anyway.

Also I think the per-node info should be in /proc/meminfo even for UMA
machines, it doesn't hurt but makes it more consistant.