On Thu, Jun 01, 2017 at 07:35:12PM +0100, Roman Gushchin wrote: > This option defines whether a cgroup should be treated > as a single entity by the OOM killer. > > If set, the OOM killer will compare the whole cgroup with other > memory consumers (other cgroups and tasks in the root cgroup), > and in case of an OOM will kill all belonging tasks. > > Disabled by default. > ... > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > @@ -5265,6 +5292,12 @@ static struct cftype memory_files[] = { > .write = memory_max_write, > }, > { > + .name = "oom_kill_all_tasks", > + .flags = CFTYPE_NOT_ON_ROOT, > + .seq_show = memory_oom_kill_all_tasks_show, > + .write = memory_oom_kill_all_tasks_write, > + }, > + { > .name = "events", > .flags = CFTYPE_NOT_ON_ROOT, > .file_offset = offsetof(struct mem_cgroup, events_file), I don't really like the name of the new knob, but can't come up with anything better :-( May be, drop '_tasks' suffix and call it just 'oom_kill_all'? Or perhaps we should emphasize the fact that this cgroup is treated as a single entity by the OOM killer by calling it 'oom_entity' or 'oom_unit'? Dunno... -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html