[PATCH] sched: account rt tasks in prio_bias()

Real time tasks' effect on prio_bias should be based on their real time priority level instead of their static_prio which is based on nice. Signed-off-by: Con Kolivas <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Nick Piggin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
klaby · Nov 9, 2005 · dad1c65 · dad1c65
1 parent 738a2cc
commit dad1c65
Showing 1 changed file with 14 additions and 8 deletions.
diff --git a/kernel/sched.c b/kernel/sched.c
@@ -661,35 +661,41 @@ static int effective_prio(task_t *p)
 }
 
 #ifdef CONFIG_SMP
-static inline void inc_prio_bias(runqueue_t *rq, int static_prio)
+static inline void inc_prio_bias(runqueue_t *rq, int prio)
 {
-	rq->prio_bias += MAX_PRIO - static_prio;
+	rq->prio_bias += MAX_PRIO - prio;
 }
 
-static inline void dec_prio_bias(runqueue_t *rq, int static_prio)
+static inline void dec_prio_bias(runqueue_t *rq, int prio)
 {
-	rq->prio_bias -= MAX_PRIO - static_prio;
+	rq->prio_bias -= MAX_PRIO - prio;
 }
 #else
-static inline void inc_prio_bias(runqueue_t *rq, int static_prio)
+static inline void inc_prio_bias(runqueue_t *rq, int prio)
 {
 }
 
-static inline void dec_prio_bias(runqueue_t *rq, int static_prio)
+static inline void dec_prio_bias(runqueue_t *rq, int prio)
 {
 }
 #endif
 
 static inline void inc_nr_running(task_t *p, runqueue_t *rq)
 {
 	rq->nr_running++;
-	inc_prio_bias(rq, p->static_prio);
+	if (rt_task(p))
+		inc_prio_bias(rq, p->prio);
+	else
+		inc_prio_bias(rq, p->static_prio);
 }
 
 static inline void dec_nr_running(task_t *p, runqueue_t *rq)
 {
 	rq->nr_running--;
-	dec_prio_bias(rq, p->static_prio);
+	if (rt_task(p))
+		dec_prio_bias(rq, p->prio);
+	else
+		dec_prio_bias(rq, p->static_prio);
 }
 
 /*