The futex man-pages (2,7) from version 3.15-1 and at least a few earlier
versions are considerably out of date with respect to the current
implementation. They don't document newer op codes, such as:

FUTEX_WAIT_BITSET
FUTEX_WAKE_BITSET
FUTEX_WAKE_OP
FUTEX_LOCK_PI
FUTEX_UNLOCK_PI
FUTEX_WAIT_REQUEUE_PI
FUTEX_CMP_REQUEUE_PI

These new wait op codes now use absolute timeouts, while the original
FUTEX_WAIT uses a relative timeout. Lastly, and most importantly, glibc
has removed the futex() wrapper to syscall(SYS_futex, ...). With that in
mind, would people prefer that we simply remove the futex man-pages
(2,7)?

Thanks,

-- 
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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