From 7b2a2d4a18fffac3c4872021529b0657896db788 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 19 Oct 2012 14:07:31 +0100 Subject: 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 Reviewed-by: Rik van Riel --- mm/mempolicy.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'mm/mempolicy.c') diff --git a/mm/mempolicy.c b/mm/mempolicy.c index d04a8a54c294..66e90ecc2350 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); } -- cgit v1.2.3