* Li Yu <[email protected]> wrote:
> 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?
that would break the code. The handling of sleep periods is basically
heuristics and using nr_running here appears to be 'good enough' in
practice.
Ingo
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