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futex.2: ERRORS: add ENOSYS case for FUTEX_CMP_REQUEUE_PI 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-01-15 09:16:53 +01:00
parent a2ebebcdc7
commit 4945ff19bb
1 changed files with 2 additions and 1 deletions
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man2/futex.2
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@ -1128,7 +1128,8 @@ nor
.BR ENOSYS
.RB ( FUTEX_LOCK_PI ,
.BR FUTEX_TRYLOCK_PI ,
.BR FUTEX_UNLOCK_PI )
.BR FUTEX_UNLOCK_PI ,
.BR FUTEX_CMP_REQUEUE_PI )
A run-time check determined that the operation not available.
The PI futex operations are not implemented on all architectures and
are not supported on some CPU variants.