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authorMel Gorman <mgorman@suse.de>2012-10-19 14:07:31 +0100
committerMel Gorman <mgorman@suse.de>2012-12-11 14:28:35 +0000
commit7b2a2d4a18fffac3c4872021529b0657896db788 (patch)
treea0f05be191f12711a774368f6feb15bcd2eebf1a /mm/compaction.c
parent5647bc293ab15f66a7b1cda850c5e9d162a6c7c2 (diff)
downloadlinux-7b2a2d4a18fffac3c4872021529b0657896db788.tar.gz
mm: migrate: Add a tracepoint for migrate_pages
The pgmigrate_success and pgmigrate_fail vmstat counters tells the user about migration activity but not the type or the reason. This patch adds a tracepoint to identify the type of page migration and why the page is being migrated. 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.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 00ad8839521..2c077a78487 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -990,7 +990,8 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
nr_migrate = cc->nr_migratepages;
err = migrate_pages(&cc->migratepages, compaction_alloc,
(unsigned long)cc, false,
- cc->sync ? MIGRATE_SYNC_LIGHT : MIGRATE_ASYNC);
+ cc->sync ? MIGRATE_SYNC_LIGHT : MIGRATE_ASYNC,
+ MR_COMPACTION);
update_nr_listpages(cc);
nr_remaining = cc->nr_migratepages;