vmstat: small revisions to refresh_cpu_vm_stats()

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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>

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Christoph Lameter 2008-02-04 22:29:16 -08:00 • committed by Linus Torvalds

parent 08e7d9b557

commit a7f75e2586

1 changed files with 16 additions and 4 deletions

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mm/vmstat.c

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