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futex.2: Describe FUTEX_CMP_REQUEUE_PI 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Darren Hart 2015-01-14 18:02:54 +01:00 committed by Michael Kerrisk
parent 084744ef24
commit f812a08b1d
1 changed files with 14 additions and 1 deletions
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man2/futex.2
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@ -817,7 +817,20 @@ arguments are ignored.
.BR FUTEX_CMP_REQUEUE_PI " (since Linux 2.6.31)"
.\" commit 52400ba946759af28442dee6265c5c0180ac7122
.\" FIXME to complete
[As yet undocumented]
This operation is a PI-aware variant of
.BR FUTEX_CMP_REQUEUE .
It requeues waiters that are blocked via
.B FUTEX_WAIT_REQUEUE_PI
on
.I uaddr
from a non-PI source futex
.RI ( uaddr )
to a PI target futex
.RI ( uaddr2 ).
.TP
.BR FUTEX_WAIT_REQUEUE_PI " (since Linux 2.6.31)"
.\" commit 52400ba946759af28442dee6265c5c0180ac7122