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-.\" Copyright (C) Tom Bjorkholm & Markus Kuhn, 1996
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" 1996-04-01 Tom Bjorkholm <tomb@mydata.se>
-.\" First version written
-.\" 1996-04-10 Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de>
-.\" revision
-.\"
-.TH sched_get_priority_max 2 (date) "Linux man-pages (unreleased)"
-.SH NAME
-sched_get_priority_max, sched_get_priority_min \- get static priority range
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <sched.h>
-.P
-.BI "int sched_get_priority_max(int " policy );
-.BI "int sched_get_priority_min(int " policy );
-.fi
-.SH DESCRIPTION
-.BR sched_get_priority_max ()
-returns the maximum priority value that can be used with the
-scheduling algorithm identified by
-.IR policy .
-.BR sched_get_priority_min ()
-returns the minimum priority value that can be used with the
-scheduling algorithm identified by
-.IR policy .
-Supported
-.I policy
-values are
-.BR SCHED_FIFO ,
-.BR SCHED_RR ,
-.BR SCHED_OTHER ,
-.BR SCHED_BATCH ,
-.BR SCHED_IDLE ,
-and
-.BR SCHED_DEADLINE .
-Further details about these policies can be found in
-.BR sched (7).
-.P
-Processes with numerically higher priority values are scheduled before
-processes with numerically lower priority values.
-Thus, the value
-returned by
-.BR sched_get_priority_max ()
-will be greater than the
-value returned by
-.BR sched_get_priority_min ().
-.P
-Linux allows the static priority range 1 to 99 for the
-.B SCHED_FIFO
-and
-.B SCHED_RR
-policies, and the priority 0 for the remaining policies.
-Scheduling priority ranges for the various policies
-are not alterable.
-.P
-The range of scheduling priorities may vary on other POSIX systems,
-thus it is a good idea for portable applications to use a virtual
-priority range and map it to the interval given by
-.BR sched_get_priority_max ()
-and
-.BR sched_get_priority_min ()
-POSIX.1 requires
-.\" POSIX.1-2001, POSIX.1-2008 (XBD 2.8.4)
-a spread of at least 32 between the maximum and the minimum values for
-.B SCHED_FIFO
-and
-.BR SCHED_RR .
-.P
-POSIX systems on which
-.BR sched_get_priority_max ()
-and
-.BR sched_get_priority_min ()
-are available define
-.B _POSIX_PRIORITY_SCHEDULING
-in
-.IR <unistd.h> .
-.SH RETURN VALUE
-On success,
-.BR sched_get_priority_max ()
-and
-.BR sched_get_priority_min ()
-return the maximum/minimum priority value for the named scheduling
-policy.
-On error, \-1 is returned, and
-.I errno
-is set to indicate the error.
-.SH ERRORS
-.TP
-.B EINVAL
-The argument
-.I policy
-does not identify a defined scheduling policy.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-.SH SEE ALSO
-.ad l
-.nh
-.BR sched_getaffinity (2),
-.BR sched_getparam (2),
-.BR sched_getscheduler (2),
-.BR sched_setaffinity (2),
-.BR sched_setparam (2),
-.BR sched_setscheduler (2),
-.BR sched (7)