* Mitchell Erblich <[email protected]> wrote:
> After
> p->time_slice = static_prio_timeslice(p->static_prio);
>
> Why isn't their a check like
> if (rq->nr_running == 1)
> return;
>
> Which world remove the need for any recheduling or requeue'ing...
your change is a possible optimization, but this is a pretty rare
codepath because the overwhelming majority of RT apps uses SCHED_FIFO.
Plus, the time_slice going down to 0 is a relatively rare event even for
SCHED_RR tasks. And if we have only a single SCHED_RR task, why is it
SCHED_RR to begin with? So this is on several levels an uncommon
workload and by adding a check like that we'd increase the codesize. But
... no strong feelings against this optimization - if you send a proper
patch we can apply it, it certainly makes sense from a logic POV.
Ingo
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