Hi Andrew,
This is a re-send of a series of patches concerning futexes (here
after is a short description).
I have reworked the patches to take into account the last changes
about futex, and this series should apply cleanly on -mm tree (the changes
mostly affect patch 2 "futex_wait uses hrtimer")
I also took into account the remark of Peter Zijlstra in patch 3
concerning futex_requeue_pi.
Could you consider (again) them for inclusion in -mm tree ?
All of them have already been discussed in January and have already
been included in -rt for a while. I think that we agreed to potentially
include them in the -mm tree.
And, again, Ulrich is specially interested by sys_futex64.
There are:
* futex uses prio list : allows RT-threads to be woken in priority order
instead of FIFO order.
* futex_wait uses hrtimer : allows the use of finer timer resolution.
* futex_requeue_pi functionality : allows use of requeue optimization for
PI-mutexes/PI-futexes.
* futex64 syscall : allows use of 64-bit futexes instead of 32-bit.
Thanks,
--
Pierre P.
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