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-rw-r--r--kernel/sched.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index ec9ea9119b98..502d47c883b6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -972,15 +972,16 @@ void kick_process(task_t *p)
static inline unsigned long __source_load(int cpu, int type, enum idle_type idle)
{
runqueue_t *rq = cpu_rq(cpu);
+ unsigned long running = rq->nr_running;
unsigned long source_load, cpu_load = rq->cpu_load[type-1],
- load_now = rq->nr_running * SCHED_LOAD_SCALE;
+ load_now = running * SCHED_LOAD_SCALE;
if (type == 0)
source_load = load_now;
else
source_load = min(cpu_load, load_now);
- if (idle == NOT_IDLE || rq->nr_running > 1)
+ if (running > 1 || (idle == NOT_IDLE && running))
/*
* If we are busy rebalancing the load is biased by
* priority to create 'nice' support across cpus. When
@@ -989,7 +990,7 @@ static inline unsigned long __source_load(int cpu, int type, enum idle_type idle
* prevent idle rebalance from trying to pull tasks from a
* queue with only one running task.
*/
- source_load *= rq->prio_bias;
+ source_load = source_load * rq->prio_bias / running;
return source_load;
}
@@ -1005,16 +1006,17 @@ static inline unsigned long source_load(int cpu, int type)
static inline unsigned long __target_load(int cpu, int type, enum idle_type idle)
{
runqueue_t *rq = cpu_rq(cpu);
+ unsigned long running = rq->nr_running;
unsigned long target_load, cpu_load = rq->cpu_load[type-1],
- load_now = rq->nr_running * SCHED_LOAD_SCALE;
+ load_now = running * SCHED_LOAD_SCALE;
if (type == 0)
target_load = load_now;
else
target_load = max(cpu_load, load_now);
- if (idle == NOT_IDLE || rq->nr_running > 1)
- target_load *= rq->prio_bias;
+ if (running > 1 || (idle == NOT_IDLE && running))
+ target_load = target_load * rq->prio_bias / running;
return target_load;
}

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