]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
oom: filter unkillable tasks from tasklist dump
authorDavid Rientjes <rientjes@google.com>
Wed, 22 Sep 2010 20:05:10 +0000 (13:05 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 23 Sep 2010 00:22:39 +0000 (17:22 -0700)
commite85bfd3aa7a34fa963bb268a676b41694e6dcf96
tree6d92d25d390668879fe952e6b6068d774d0471b4
parentfd02db9de73faebc51240619c7c7f99bee9f65c7
oom: filter unkillable tasks from tasklist dump

/proc/sys/vm/oom_dump_tasks is enabled by default, so it's necessary to
limit as much information as possible that it should emit.

The tasklist dump should be filtered to only those tasks that are eligible
for oom kill.  This is already done for memcg ooms, but this patch extends
it to both cpuset and mempolicy ooms as well as init.

In addition to suppressing irrelevant information, this also reduces
confusion since users currently don't know which tasks in the tasklist
aren't eligible for kill (such as those attached to cpusets or bound to
mempolicies with a disjoint set of mems or nodes, respectively) since that
information is not shown.

Signed-off-by: David Rientjes <rientjes@google.com>
Reviewed-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>
mm/oom_kill.c