path: root/mm/oom_kill.c
diff options
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 /mm/oom_kill.c
parent121d1ba0a019e1465a53533aea133b1b0f6b442d (diff)
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 'mm/oom_kill.c')
1 files changed, 6 insertions, 5 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 50e74373e85..c82ede69bf3 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -371,8 +371,8 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
* Dumps the current memory state of all eligible tasks. Tasks not in the same
* memcg, not in the same cpuset, or bound to a disjoint set of mempolicy nodes
* are not shown.
- * State information includes task's pid, uid, tgid, vm size, rss, cpu, oom_adj
- * value, oom_score_adj value, and name.
+ * State information includes task's pid, uid, tgid, vm size, rss, nr_ptes,
+ * swapents, oom_score_adj value, and name.
* Call with tasklist_lock read-locked.
@@ -381,7 +381,7 @@ static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemas
struct task_struct *p;
struct task_struct *task;
- pr_info("[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name\n");
+ pr_info("[ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name\n");
for_each_process(p) {
if (oom_unkillable_task(p, memcg, nodemask))
@@ -396,10 +396,11 @@ static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemas
- pr_info("[%5d] %5d %5d %8lu %8lu %3u %3d %5d %s\n",
+ pr_info("[%5d] %5d %5d %8lu %8lu %7lu %8lu %5d %s\n",
task->pid, from_kuid(&init_user_ns, task_uid(task)),
task->tgid, task->mm->total_vm, get_mm_rss(task->mm),
- task_cpu(task), task->signal->oom_adj,
+ task->mm->nr_ptes,
+ get_mm_counter(task->mm, MM_SWAPENTS),
task->signal->oom_score_adj, task->comm);