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/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index b8edb2860557..6dd60eaea997 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -174,6 +174,9 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                 "Inactive(anon): %8lu kB\n"
                 "Active(file):   %8lu kB\n"
                 "Inactive(file): %8lu kB\n"
+#ifdef CONFIG_UNEVICTABLE_LRU
+                "Unevictable:    %8lu kB\n"
+#endif
 #ifdef CONFIG_HIGHMEM
                 "HighTotal:      %8lu kB\n"
                 "HighFree:       %8lu kB\n"
@@ -212,6 +215,9 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                 K(pages[LRU_INACTIVE_ANON]),
                 K(pages[LRU_ACTIVE_FILE]),
                 K(pages[LRU_INACTIVE_FILE]),
+#ifdef CONFIG_UNEVICTABLE_LRU
+                K(pages[LRU_UNEVICTABLE]),
+#endif
 #ifdef CONFIG_HIGHMEM
                 K(i.totalhigh),
                 K(i.freehigh),