sched: remove some old cpuset logic

We had support for overlapping cpuset based rto logic in early
prototypes that is no longer used, so remove it.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index a386758ffebb14c701a3cca37cdb9962162c71c9..9affb3c9d3dbded63a0f32aeb7201c4e123212f4 100644 (file)
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -586,38 +586,6 @@ static int pull_rt_task(struct rq *this_rq)
                        continue;
 
                src_rq = cpu_rq(cpu);
-               if (unlikely(src_rq->rt.rt_nr_running <= 1)) {
-                       /*
-                        * It is possible that overlapping cpusets
-                        * will miss clearing a non overloaded runqueue.
-                        * Clear it now.
-                        */
-                       if (double_lock_balance(this_rq, src_rq)) {
-                               /* unlocked our runqueue lock */
-                               struct task_struct *old_next = next;
-
-                               next = pick_next_task_rt(this_rq);
-                               if (next != old_next)
-                                       ret = 1;
-                       }
-                       if (likely(src_rq->rt.rt_nr_running <= 1)) {
-                               /*
-                                * Small chance that this_rq->curr changed
-                                * but it's really harmless here.
-                                */
-                               rt_clear_overload(this_rq);
-                       } else {
-                               /*
-                                * Heh, the src_rq is now overloaded, since
-                                * we already have the src_rq lock, go straight
-                                * to pulling tasks from it.
-                                */
-                               goto try_pulling;
-                       }
-                       spin_unlock(&src_rq->lock);
-                       continue;
-               }
-
                /*
                 * We can potentially drop this_rq's lock in
                 * double_lock_balance, and another CPU could
@@ -641,7 +609,6 @@ static int pull_rt_task(struct rq *this_rq)
                        continue;
                }
 
- try_pulling:
                p = pick_next_highest_task_rt(src_rq, this_cpu);
 
                /*