@@ -87,8 +87,7 @@ static inline struct autogroup *autogroup_create(void)
* so we don't have to move tasks around upon policy change,
* or flail around trying to allocate bandwidth on the fly.
* A bandwidth exception in __sched_setscheduler() allows
- * the policy change to proceed. Thereafter, task_group()
- * returns &root_task_group, so zero bandwidth is required.
+ * the policy change to proceed.
*/
free_rt_sched_group(tg);
tg->rt_se = root_task_group.rt_se;
@@ -115,9 +114,6 @@ bool task_wants_autogroup(struct task_struct *p, struct task_group *tg)
if (tg != &root_task_group)
return false;
- if (p->sched_class != &fair_sched_class)
- return false;
-
/*
* We can only assume the task group can't go away on us if
* autogroup_move_group() can see us on ->thread_group list.
@@ -7348,6 +7348,12 @@ static inline int tg_has_rt_tasks(struct task_group *tg)
{
struct task_struct *g, *p;
+ /*
+ * Autogroups do not have RT tasks; see autogroup_create().
+ */
+ if (task_group_is_autogroup(tg))
+ return 0;
+
do_each_thread(g, p) {
if (rt_task(p) && task_rq(p)->rt.tg == tg)
return 1;