@@ -1268,6 +1268,9 @@ PAGE_SIZE multiple when read back.
The number of processes belonging to this cgroup
killed by any kind of OOM killer.
+ oom_group_kill
+ The number of times a group OOM has occurred.
+
memory.events.local
Similar to memory.events but the fields in the file are local
to the cgroup i.e. not hierarchical. The file modified event
@@ -42,6 +42,7 @@ enum memcg_memory_event {
MEMCG_MAX,
MEMCG_OOM,
MEMCG_OOM_KILL,
+ MEMCG_OOM_GROUP_KILL,
MEMCG_SWAP_HIGH,
MEMCG_SWAP_MAX,
MEMCG_SWAP_FAIL,
@@ -6318,6 +6318,8 @@ static void __memory_events_show(struct
seq_printf(m, "oom %lu\n", atomic_long_read(&events[MEMCG_OOM]));
seq_printf(m, "oom_kill %lu\n",
atomic_long_read(&events[MEMCG_OOM_KILL]));
+ seq_printf(m, "oom_group_kill %lu\n",
+ atomic_long_read(&events[MEMCG_OOM_GROUP_KILL]));
}
static int memory_events_show(struct seq_file *m, void *v)
@@ -994,6 +994,7 @@ static void oom_kill_process(struct oom_
* If necessary, kill all tasks in the selected memory cgroup.
*/
if (oom_group) {
+ memcg_memory_event(oom_group, MEMCG_OOM_GROUP_KILL);
mem_cgroup_print_oom_group(oom_group);
mem_cgroup_scan_tasks(oom_group, oom_kill_memcg_member,
(void *)message);