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    SubjectRe: [PATCH] O16.2int
    Date
    On Sun, 17 Aug 2003 17:40, Andrew Morton wrote:
    > Con Kolivas <kernel@kolivas.org> wrote:
    > > Much simpler
    >
    > But broken.
    >
    > The machine runs about 100x slower than normal. The screensaver cut in
    > halfway through the initscripts ;) That's on 2-way. The same kernel works
    > OK on uniprocessor.

    Reverting the !in_interrupt nonsense should be enough to avoid the dreaded
    screensaver at boottime I hope. Does this fix it?

    Starvation will be approached differently.

    Change:
    Make preemption occur as vanilla again except for now not preempting same
    priority tasks with less timeslice.

    Con
    --- linux-2.6.0-test3-mm2-O16.2/kernel/sched.c 2003-08-18 00:03:53.000000000 +1000
    +++ linux-2.6.0-test3-mm2-O16.3/kernel/sched.c 2003-08-18 00:44:20.000000000 +1000
    @@ -609,9 +609,8 @@ repeat_lock_task:
    __activate_task(p, rq);
    else {
    activate_task(p, rq);
    - if (TASK_PREEMPTS_CURR(p, rq) &&
    - (in_interrupt() || !p->mm))
    - resched_task(rq->curr);
    + if (TASK_PREEMPTS_CURR(p, rq))
    + resched_task(rq->curr);
    }
    success = 1;
    }
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