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sched: wakeup preemption fix

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wakeup preemption fix: do not make it dependent on p->prio.
Preemption purely depends on ->vruntime.

This improves preemption in mixed-nice-level workloads.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2007-11-09 22:39:39 +01:00
parent 3e3e13f399
commit 8bc6767acb
1 changed files with 2 additions and 4 deletions
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6
kernel/sched_fair.c
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@ -863,10 +863,8 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
if (unlikely(se->load.weight != NICE_0_LOAD)) if (unlikely(se->load.weight != NICE_0_LOAD))
gran = calc_delta_fair(gran, &se->load); gran = calc_delta_fair(gran, &se->load);
if (delta > gran) { if (delta > gran)
if (p->prio < curr->prio) resched_task(curr);
resched_task(curr);
}
} }
} }