[PATCH] Zone reclaim: proc override

proc support for zone reclaim

This patch creates a proc entry /proc/sys/vm/zone_reclaim_mode that may be
used to override the automatic determination of the zone reclaim made on
bootup.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f5d69b6e29f5..cb99a42f8b37 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -870,6 +870,17 @@ static ctl_table vm_table[] = {
                 .strategy       = &sysctl_jiffies,
         },
 #endif
+#ifdef CONFIG_NUMA
+        {
+                .ctl_name       = VM_ZONE_RECLAIM_MODE,
+                .procname       = "zone_reclaim_mode",
+                .data           = &zone_reclaim_mode,
+                .maxlen         = sizeof(zone_reclaim_mode),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+                .strategy       = &zero,
+        },
+#endif
         { .ctl_name = 0 }
 };