docs/175687: pthread_setschedparam(3) may fail for undocumented reason (EPERM)

[Mikhail T.]

>Number:         175687
>Category:       docs
>Synopsis:       pthread_setschedparam(3) may fail for undocumented reason (EPERM)
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 30 02:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Mikhail T.
>Release:        FreeBSD 9.1-PRERELEASE amd64
>Organization:
Virtual Estates, Inc.	http://sybpipe.com/
>Environment:

>Description:
	The pthread_setschedparam(3) manual page lists the following
	possible reasons for the function's failure:

	     The pthread_setschedparam() function will fail if:

		     [EINVAL]        Invalid value for policy.
		     [ENOTSUP]       Invalid value for scheduling parameters.
		     [ESRCH]         Non-existent thread thread.

	However, the function may also fail -- with EPERM -- if an
	attempt is made to alter the scheduling policy of a thread.

>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: