linux-kernel - Re: [patch] CFS scheduler, -v14

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Date:	Thu, 31 May 2007 17:45:16 +0800
From:	Li Yu <raise.sail@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [patch] CFS scheduler, -v14


static void distribute_fair_add(struct rq *rq, s64 delta)
{
    struct task_struct *curr = rq->curr;
    s64 delta_fair = 0;

    if (!(sysctl_sched_load_smoothing & 32))
        return;

    if (rq->nr_running) {
        delta_fair = div64_s(delta, rq->nr_running);
        /*
         * The currently running task's next wait_runtime value does
         * not depend on the fair_clock, so fix it up explicitly:
         */
        add_wait_runtime(rq, curr, -delta_fair);
        rq->fair_clock -= delta_fair;
    }
}

See this line:

        delta_fair = div64_s(delta, rq->nr_running);

Ingo, should we be replace "rq->nr_running" with "rq->raw_load_weight" here?

Good luck
- Li Yu




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