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| author | Mel Gorman <mgorman@suse.de> | 2012-10-19 14:07:31 +0100 |
|---|---|---|
| committer | Mel Gorman <mgorman@suse.de> | 2012-12-11 14:28:35 +0000 |
| commit | 7b2a2d4a18fffac3c4872021529b0657896db788 (patch) | |
| tree | a0f05be191f12711a774368f6feb15bcd2eebf1a /mm/mempolicy.c | |
| parent | 5647bc293ab15f66a7b1cda850c5e9d162a6c7c2 (diff) | |
| download | lwn-7b2a2d4a18fffac3c4872021529b0657896db788.tar.gz lwn-7b2a2d4a18fffac3c4872021529b0657896db788.zip | |
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.c | 6 |
1 files changed, 4 insertions, 2 deletions
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); } |