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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/mempolicy.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/mempolicy.c')
-rw-r--r--mm/mempolicy.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d04a8a54c29..66e90ecc235 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -961,7 +961,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
if (!list_empty(&pagelist)) {
err = migrate_pages(&pagelist, new_node_page, dest,
- false, MIGRATE_SYNC);
+ false, MIGRATE_SYNC,
+ MR_SYSCALL);
if (err)
putback_lru_pages(&pagelist);
}
@@ -1202,7 +1203,8 @@ static long do_mbind(unsigned long start, unsigned long len,
if (!list_empty(&pagelist)) {
nr_failed = migrate_pages(&pagelist, new_vma_page,
(unsigned long)vma,
- false, MIGRATE_SYNC);
+ false, MIGRATE_SYNC,
+ MR_MEMPOLICY_MBIND);
if (nr_failed)
putback_lru_pages(&pagelist);
}