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Add BUGS text noting that the return value from Linux 

sched_setschuler() does not conform to POSIX.
This commit is contained in:
Michael Kerrisk 2007-11-19 04:24:28 +00:00
parent 4407d3d81e
commit d61ff56aa8
1 changed files with 9 additions and 1 deletions
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10
man2/sched_setscheduler.2
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@ -320,7 +320,7 @@ The calling process does not have appropriate privileges.
.B ESRCH
The process whose ID is \fIpid\fP could not be found.
.SH "CONFORMING TO"
POSIX.1-2001.
POSIX.1-2001 (but see BUGS below).
The \fBSCHED_BATCH\fP policy is Linux specific.
.SH NOTES
POSIX.1 does not detail the permissions that an unprivileged
@ -383,6 +383,14 @@ The FIFO and RR scheduling policies that can be selected using
.BR sched_setscheduler ()
are then used to run a process
with true real-time priority and a minimum worst-case scheduling latency.
.SH BUGS
POSIX says that on success,
.BR sched_setscheduler ()
should return the previous scheduling policy.
Linux
.BR sched_setscheduler ()
does not conform to this requirement,
since it always returns 0 on success.
.SH "SEE ALSO"
.BR getpriority (2),
.BR mlock (2),