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authorMel Gorman <mgorman@suse.de>2012-10-19 10:46:20 +0100
committerMel Gorman <mgorman@suse.de>2012-12-11 14:28:35 +0000
commit5647bc293ab15f66a7b1cda850c5e9d162a6c7c2 (patch)
treeebf21726915b1e814046c950c5882e33dad303b9 /mm/compaction.c
parent1233d588210737ed3696b44c26e71dfa44a6995a (diff)
downloadlinux-5647bc293ab15f66a7b1cda850c5e9d162a6c7c2.tar.gz
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>
Diffstat (limited to 'mm/compaction.c')
-rw-r--r--mm/compaction.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 9eef55838fc..00ad8839521 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -994,10 +994,6 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
update_nr_listpages(cc);
nr_remaining = cc->nr_migratepages;
- count_vm_event(COMPACTBLOCKS);
- count_vm_events(COMPACTPAGES, nr_migrate - nr_remaining);
- if (nr_remaining)
- count_vm_events(COMPACTPAGEFAILED, nr_remaining);
trace_mm_compaction_migratepages(nr_migrate - nr_remaining,
nr_remaining);