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

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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 <kernel@kolivas.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Con Kolivas 2005-11-08 21:38:57 -08:00 committed by Linus Torvalds
parent 738a2ccbcf
commit dad1c65c80
1 changed files with 14 additions and 8 deletions
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22
kernel/sched.c
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@ -661,21 +661,21 @@ 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
@ -683,13 +683,19 @@ static inline void dec_prio_bias(runqueue_t *rq, int static_prio)
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);
}
/*