[CVE-2009-0029] System call wrappers part 03

[pandora-kernel.git] / kernel / sched_fair.c

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 56c0efe..8e1352c 100644 (file)
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -385,20 +385,6 @@ int sched_nr_latency_handler(struct ctl_table *table, int write,
 }
 #endif
 
-/*
- * delta *= P[w / rw]
- */
-static inline unsigned long
-calc_delta_weight(unsigned long delta, struct sched_entity *se)
-{
-       for_each_sched_entity(se) {
-               delta = calc_delta_mine(delta,
-                               se->load.weight, &cfs_rq_of(se)->load);
-       }
-
-       return delta;
-}
-
 /*
  * delta /= w
  */
@@ -440,12 +426,20 @@ static u64 __sched_period(unsigned long nr_running)
  */
 static u64 sched_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
-       unsigned long nr_running = cfs_rq->nr_running;
+       u64 slice = __sched_period(cfs_rq->nr_running + !se->on_rq);
+
+       for_each_sched_entity(se) {
+               struct load_weight *load = &cfs_rq->load;
 
-       if (unlikely(!se->on_rq))
-               nr_running++;
+               if (unlikely(!se->on_rq)) {
+                       struct load_weight lw = cfs_rq->load;
 
-       return calc_delta_weight(__sched_period(nr_running), se);
+                       update_load_add(&lw, se->load.weight);
+                       load = &lw;
+               }
+               slice = calc_delta_mine(slice, se->load.weight, load);
+       }
+       return slice;
 }
 
 /*
@@ -1623,8 +1617,6 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued)
        }
 }
 
-#define swap(a, b) do { typeof(a) tmp = (a); (a) = (b); (b) = tmp; } while (0)
-
 /*
  * Share the fairness runtime between parent and child, thus the
  * total amount of pressure for CPU stays equal - new tasks