oom: enable oom tasklist dump by default

The oom killer tasklist dump, enabled with the oom_dump_tasks sysctl, is
very helpful information in diagnosing why a user's task has been killed.
It emits useful information such as each eligible thread's memory usage
that can determine why the system is oom, so it should be enabled by
default.

Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 82b2da18c45d8e43c71f3e381cde3b5e99f18296..b606c2c4dd37c4f2e5f5caf7803d66adadd59e6a 100644 (file)
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -511,7 +511,7 @@ information may not be desired.
 If this is set to non-zero, this information is shown whenever the
 OOM killer actually kills a memory-hogging task.
 
-The default value is 0.
+The default value is 1 (enabled).
 
 ==============================================================
 

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 13ceed78bc452754b7cffd03a971717b9f5efbc4..01b5e01e52cbd14d6b57893d73064ef29612db12 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -32,7 +32,7 @@
 
 int sysctl_panic_on_oom;
 int sysctl_oom_kill_allocating_task;
-int sysctl_oom_dump_tasks;
+int sysctl_oom_dump_tasks = 1;
 static DEFINE_SPINLOCK(zone_scan_lock);
 /* #define DEBUG */