diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index ec9ea9119b9..502d47c883b 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; } |