tree ebf21726915b1e814046c950c5882e33dad303b9
parent 1233d588210737ed3696b44c26e71dfa44a6995a
author Mel Gorman <mgorman@suse.de> 1350639980 +0100
committer Mel Gorman <mgorman@suse.de> 1355236115 +0000

mm: compaction: Move migration fail/success stats to migrate.c

The compact_pages_moved and compact_pagemigrate_failed events are
convenient for determining if compaction is active and to what
degree migration is succeeding but it's at the wrong level. Other
users of migration may also want to know if migration is working
properly and this will be particularly true for any automated
NUMA migration. This patch moves the counters down to migration
with the new events called pgmigrate_success and pgmigrate_fail.
The compact_blocks_moved counter is removed because while it was
useful for debugging initially, it's worthless now as no meaningful
conclusions can be drawn from its value.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>