sched: rt-group: make rt groups scheduling configurable

Make the rt group scheduler compile time configurable.
Keep it experimental for now.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 4 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 142eb293f9c4..b9bb313fe1ae 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -590,7 +590,7 @@ struct user_struct {
         struct hlist_node uidhash_node;
         uid_t uid;
 
-#ifdef CONFIG_FAIR_USER_SCHED
+#ifdef CONFIG_USER_SCHED
         struct task_group *tg;
 #ifdef CONFIG_SYSFS
         struct kobject kobj;
@@ -973,7 +973,7 @@ struct sched_rt_entity {
         unsigned long timeout;
         int nr_cpus_allowed;
 
-#ifdef CONFIG_FAIR_GROUP_SCHED
+#ifdef CONFIG_RT_GROUP_SCHED
         struct sched_rt_entity  *parent;
         /* rq on which this entity is (to be) queued: */
         struct rt_rq            *rt_rq;
@@ -2027,19 +2027,22 @@ extern int sched_mc_power_savings, sched_smt_power_savings;
 
 extern void normalize_rt_tasks(void);
 
-#ifdef CONFIG_FAIR_GROUP_SCHED
+#ifdef CONFIG_GROUP_SCHED
 
 extern struct task_group init_task_group;
 
 extern struct task_group *sched_create_group(void);
 extern void sched_destroy_group(struct task_group *tg);
 extern void sched_move_task(struct task_struct *tsk);
+#ifdef CONFIG_FAIR_GROUP_SCHED
 extern int sched_group_set_shares(struct task_group *tg, unsigned long shares);
 extern unsigned long sched_group_shares(struct task_group *tg);
+#endif
+#ifdef CONFIG_RT_GROUP_SCHED
 extern int sched_group_set_rt_runtime(struct task_group *tg,
                                       long rt_runtime_us);
 extern long sched_group_rt_runtime(struct task_group *tg);
-
+#endif
 #endif
 
 #ifdef CONFIG_TASK_XACCT