[patch] sched-cleanup-2.5.69-A0

From: Ingo Molnar (mingo@elte.hu)
Date: Mon May 19 2003 - 03:25:44 EST


the attached scheduler cleanup (against BK-curr) removes the unused
requeueing code. Compiles & boots.

        Ingo

--- linux/kernel/sched.c.orig
+++ linux/kernel/sched.c
@@ -340,10 +340,9 @@ static inline void __activate_task(task_
  * Update all the scheduling statistics stuff. (sleep average
  * calculation, priority modifiers, etc.)
  */
-static inline int activate_task(task_t *p, runqueue_t *rq)
+static inline void activate_task(task_t *p, runqueue_t *rq)
 {
         long sleep_time = jiffies - p->last_run - 1;
- int requeue_waker = 0;
 
         if (sleep_time > 0) {
                 int sleep_avg;
@@ -372,8 +371,6 @@ static inline int activate_task(task_t *
                 }
         }
         __activate_task(p, rq);
-
- return requeue_waker;
 }
 
 /*
@@ -471,8 +468,8 @@ repeat:
  */
 static int try_to_wake_up(task_t * p, unsigned int state, int sync, int kick)
 {
- int success = 0, requeue_waker = 0;
         unsigned long flags;
+ int success = 0;
         long old_state;
         runqueue_t *rq;
 
@@ -498,7 +495,7 @@ repeat_lock_task:
                         if (sync)
                                 __activate_task(p, rq);
                         else {
- requeue_waker = activate_task(p, rq);
+ activate_task(p, rq);
                                 if (p->prio < rq->curr->prio)
                                         resched_task(rq->curr);
                         }
@@ -510,21 +507,6 @@ repeat_lock_task:
         }
         task_rq_unlock(rq, &flags);
 
- /*
- * We have to do this outside the other spinlock, the two
- * runqueues might be different:
- */
- if (requeue_waker) {
- prio_array_t *array;
-
- rq = task_rq_lock(current, &flags);
- array = current->array;
- dequeue_task(current, array);
- current->prio = effective_prio(current);
- enqueue_task(current, array);
- task_rq_unlock(rq, &flags);
- }
-
         return success;
 }
 

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