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>

1 files changed, 0 insertions, 33 deletions

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index a386758ffebb..9affb3c9d3db 100644
--- 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);
 
                 /*