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, 6 insertions, 0 deletions

diff --git a/drivers/base/node.c b/drivers/base/node.c
index fc7e9bf0cdbc..11a9a05cf554 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -70,6 +70,9 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
                        "Node %d Inactive(anon): %8lu kB\n"
                        "Node %d Active(file):   %8lu kB\n"
                        "Node %d Inactive(file): %8lu kB\n"
+#ifdef CONFIG_UNEVICTABLE_LRU
+                       "Node %d Noreclaim:      %8lu kB\n"
+#endif
 #ifdef CONFIG_HIGHMEM
                        "Node %d HighTotal:      %8lu kB\n"
                        "Node %d HighFree:       %8lu kB\n"
@@ -99,6 +102,9 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
                        nid, K(node_page_state(nid, NR_INACTIVE_ANON)),
                        nid, K(node_page_state(nid, NR_ACTIVE_FILE)),
                        nid, K(node_page_state(nid, NR_INACTIVE_FILE)),
+#ifdef CONFIG_UNEVICTABLE_LRU
+                       nid, K(node_page_state(nid, NR_UNEVICTABLE)),
+#endif
 #ifdef CONFIG_HIGHMEM
                        nid, K(i.totalhigh),
                        nid, K(i.freehigh),