tree 12f651d69e72159c6f904e007973874e912853bb
parent 08e7d9b557299ba6ce57165ce8df310780bd681c
author Christoph Lameter <clameter@sgi.com> 1202192956 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202233458 -0800

vmstat: small revisions to refresh_cpu_vm_stats()

1. Add comments explaining how the function can be called.

2. Collect global diffs in a local array and only spill
   them once into the global counters when the zone scan
   is finished. This means that we only touch each global
   counter once instead of each time we fold cpu counters
   into zone counters.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>