* Yury Norov <[email protected]> wrote:
> sched_find_first_bit() is in fact the unrolled version of
> find_first_bit(), which is theoretically faster in some cases.
> But in the kernel it is called only in couple places in
> kernel/sched/rt.c, and both of them are not looking like hot
> paths [...]
They are in terms of scheduling: pick_next_rt_entity() is in the RT scheduling
fastpath.
Which makes me just suspicious of how careful this patch really is:
> that will doubtly achieve measurable benefit from using unrolled version of
> find_first_bit() - there's no hard loops, and the execution path is not
> really
> short.
... that's really just handwaving. Numbers please.
Thanks,
Ingo
