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    Subject[PATCH] requeue at granularity intervals
    requeue at granularity intervals

    Change the granularity code to requeue tasks at their best priority
    instead of changing priority while they're running. This keeps tasks at
    their top interactive level during their whole timeslice.

    Signed-off-by: Con Kolivas <kernel@kolivas.org>

    Index: linux-2.6.10-rc1-mm2/kernel/sched.c
    ===================================================================
    --- linux-2.6.10-rc1-mm2.orig/kernel/sched.c 2004-11-03 00:55:48.638171430 +1100
    +++ linux-2.6.10-rc1-mm2/kernel/sched.c 2004-11-03 00:57:50.863711719 +1100
    @@ -2476,10 +2476,8 @@ void scheduler_tick(void)
    (p->time_slice >= TIMESLICE_GRANULARITY(p)) &&
    (p->array == rq->active)) {

    - dequeue_task(p, rq->active);
    + requeue_task(p, rq->active);
    set_tsk_need_resched(p);
    - p->prio = effective_prio(p);
    - enqueue_task(p, rq->active);
    }
    }
    out_unlock:
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