Unevictable LRU Page Statistics

Report unevictable pages per zone and system wide.

Kosaki Motohiro added support for memory controller unevictable
statistics.

[riel@redhat.com: fix printk in show_free_areas()]
[akpm@linux-foundation.org: fix units in /proc/vmstats]
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Debugged-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 6cb08cdd4f03..6db2f6319313 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -623,6 +623,9 @@ static const char * const vmstat_text[] = {
         "nr_active_anon",
         "nr_inactive_file",
         "nr_active_file",
+#ifdef CONFIG_UNEVICTABLE_LRU
+        "nr_unevictable",
+#endif
         "nr_anon_pages",
         "nr_mapped",
         "nr_file_pages",