[LinuxPPS] [PATCH 01/11] PPS: Don't waste time getting unnecessary timestamps.

[George Spelvin]

Rodolfo Giometti <giometti at enneenne.com> wrote:
>> But really, one predicted untaken branch (forward branches are predicted
>> not taken if not in the prediction cache) is a truly negligible overhead.
>> (You can add a likely() hint to make the branch time deterministic.)
>
> Mmm... I suppose using likely() could be better... let me investigate.

What might be even simpler is to change the interface to require a
non-NULL timestamp be passed in.  Both existing clients do so, so it's
not like you'll break any code...