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authorDavid Rientjes <rientjes@google.com>2012-07-31 16:42:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 18:42:42 -0700
commitde34d965a80d0f61a354bdefa0b15a88bcff2028 (patch)
treeac20c4e343a93234abc9c068830d9b0b0ed2bda9 /Documentation/sysctl
parent121d1ba0a019e1465a53533aea133b1b0f6b442d (diff)
downloadlinaro-lsk-de34d965a80d0f61a354bdefa0b15a88bcff2028.tar.gz
mm, oom: replace some information in tasklist dump
The number of ptes and swap entries are used in the oom killer's badness heuristic, so they should be shown in the tasklist dump. This patch adds those fields and replaces cpu and oom_adj values that are currently emitted. Cpu isn't interesting and oom_adj is deprecated and will be removed later this year, the same information is already displayed as oom_score_adj which is used internally. At the same time, make the documentation a little more clear to state this information is helpful to determine why the oom killer chose the task it did to kill. Signed-off-by: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/sysctl')
-rw-r--r--Documentation/sysctl/vm.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 06d662b1c5d..dcc2a94ae34 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -491,9 +491,10 @@ oom_dump_tasks
Enables a system-wide task dump (excluding kernel threads) to be
produced when the kernel performs an OOM-killing and includes such
-information as pid, uid, tgid, vm size, rss, cpu, oom_adj score, and
-name. This is helpful to determine why the OOM killer was invoked
-and to identify the rogue task that caused it.
+information as pid, uid, tgid, vm size, rss, nr_ptes, swapents,
+oom_score_adj score, and name. This is helpful to determine why the
+OOM killer was invoked, to identify the rogue task that caused it,
+and to determine why the OOM killer chose the task it did to kill.
If this is set to zero, this information is suppressed. On very
large systems with thousands of tasks it may not be feasible to dump