diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 502d47c883b..0f2def82229 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -670,6 +670,31 @@ static inline void dec_prio_bias(runqueue_t *rq, int prio) { rq->prio_bias -= MAX_PRIO - prio; } + +static inline void inc_nr_running(task_t *p, runqueue_t *rq) +{ + rq->nr_running++; + if (rt_task(p)) { + if (p != rq->migration_thread) + /* + * The migration thread does the actual balancing. Do + * not bias by its priority as the ultra high priority + * will skew balancing adversely. + */ + 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--; + if (rt_task(p)) { + if (p != rq->migration_thread) + dec_prio_bias(rq, p->prio); + } else + dec_prio_bias(rq, p->static_prio); +} #else static inline void inc_prio_bias(runqueue_t *rq, int prio) { @@ -678,25 +703,17 @@ static inline void inc_prio_bias(runqueue_t *rq, int 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++; - 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--; - if (rt_task(p)) - dec_prio_bias(rq, p->prio); - else - dec_prio_bias(rq, p->static_prio); } +#endif /* * __activate_task - move a task to the runqueue. |