On Fri, 24 Jun 2016, Michael Kerrisk (man-pages) wrote:
> By the way, I just realized something that wasn't initially obvious
> to me, and documented it in the futex(2) man page:
> 
>               Note:  for  FUTEX_WAIT,  timeout is interpreted as a
>               relative value.  This differs from other futex oper‐
>               ations,  where timeout is interpreted as an absolute
>               value.  To obtain the equivalent of FUTEX_WAIT  with
>               an  absolute  timeout, employ FUTEX_WAIT_BITSET with
>               val3 specified as FUTEX_BITSET_MATCH_ANY.
> 
> Okay?

Yes.