sched: Simplify the idle scheduling class
Peter Zijlstra [Tue, 25 Jan 2011 15:30:03 +0000 (16:30 +0100)]
Since commit 48c5ccae88dcd (sched: Simplify cpu-hot-unplug task
migration) this should no longer happen, so remove the code.

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

kernel/sched_idletask.c

index 9fa0f40..41eb62a 100644 (file)
@@ -52,31 +52,16 @@ static void set_curr_task_idle(struct rq *rq)
 {
 }
 
-static void switched_to_idle(struct rq *rq, struct task_struct *p,
-                            int running)
+static void
+switched_to_idle(struct rq *rq, struct task_struct *p, int running)
 {
-       /* Can this actually happen?? */
-       if (running)
-               resched_task(rq->curr);
-       else
-               check_preempt_curr(rq, p, 0);
+       BUG();
 }
 
 static void prio_changed_idle(struct rq *rq, struct task_struct *p,
                              int oldprio, int running)
 {
-       /* This can happen for hot plug CPUS */
-
-       /*
-        * Reschedule if we are currently running on this runqueue and
-        * our priority decreased, or if we are not currently running on
-        * this runqueue and our priority is higher than the current's
-        */
-       if (running) {
-               if (p->prio > oldprio)
-                       resched_task(rq->curr);
-       } else
-               check_preempt_curr(rq, p, 0);
+       BUG();
 }
 
 static unsigned int get_rr_interval_idle(struct rq *rq, struct task_struct *task)