f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
119 lines
3.4 KiB
Groff
119 lines
3.4 KiB
Groff
.\" $NetBSD: cpuset.3,v 1.6 2011/11/02 20:25:20 wiz Exp $
|
|
.\"
|
|
.\" Copyright (c) 2008 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Mindaugas Rasiukevicius <rmind at NetBSD org>.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd November 2, 2011
|
|
.Dt CPUSET 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cpuset_create ,
|
|
.Nm cpuset_destroy ,
|
|
.Nm cpuset_zero ,
|
|
.Nm cpuset_set ,
|
|
.Nm cpuset_clr ,
|
|
.Nm cpuset_isset ,
|
|
.Nm cpuset_size
|
|
.Nd dynamic CPU sets
|
|
.Sh SYNOPSIS
|
|
.In sched.h
|
|
.Ft cpuset_t *
|
|
.Fn cpuset_create "void"
|
|
.Ft void
|
|
.Fn cpuset_destroy "cpuset_t *set"
|
|
.Ft void
|
|
.Fn cpuset_zero "cpuset_t *set"
|
|
.Ft int
|
|
.Fn cpuset_set "cpuid_t cpu" "cpuset_t *set"
|
|
.Ft int
|
|
.Fn cpuset_clr "cpuid_t cpu" "cpuset_t *set"
|
|
.Ft int
|
|
.Fn cpuset_isset "cpuid_t cpu" "const cpuset_t *set"
|
|
.Ft size_t
|
|
.Fn cpuset_size "const cpuset_t *set"
|
|
.Sh DESCRIPTION
|
|
This section describes the functions used to create, set, use and destroy
|
|
the dynamic CPU sets.
|
|
.Pp
|
|
This API can be used with the POSIX threads, see
|
|
.Xr pthread 3
|
|
and
|
|
.Xr affinity 3 .
|
|
.Pp
|
|
The ID of the primary CPU in the system is 0.
|
|
.Sh FUNCTIONS
|
|
.Bl -tag -width compact
|
|
.It Fn cpuset_create
|
|
Allocates and initializes a clean CPU-set.
|
|
Returns the pointer to the CPU-set, or
|
|
.Dv NULL
|
|
on failure.
|
|
.It Fn cpuset_destroy set
|
|
Destroy the CPU-set specified by
|
|
.Fa set .
|
|
.It Fn cpuset_zero set
|
|
Makes the CPU-set specified by
|
|
.Fa set
|
|
clean, that is, memory is initialized to zero bytes, and none of
|
|
the CPUs set.
|
|
.It Fn cpuset_set cpu set
|
|
Sets the CPU specified by
|
|
.Fa cpu
|
|
in
|
|
.Fa set .
|
|
Returns zero on success, and \-1 if
|
|
.Fa cpu
|
|
is invalid.
|
|
.It Fn cpuset_clr cpu set
|
|
Clears the CPU specified by
|
|
.Fa cpu
|
|
in the CPU-set
|
|
.Fa set .
|
|
Returns zero on success, and \-1 if
|
|
.Fa cpu
|
|
is invalid.
|
|
.It Fn cpuset_isset cpu set
|
|
Checks if CPU specified by
|
|
.Fa cpu
|
|
is set in the CPU-set
|
|
.Fa set .
|
|
Returns the positive number if set, zero if not set, and \-1 if
|
|
.Fa cpu
|
|
is invalid.
|
|
.It Fn cpuset_size set
|
|
Returns the size in bytes of CPU-set specified by
|
|
.Fa set .
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr affinity 3 ,
|
|
.Xr pset 3 ,
|
|
.Xr sched 3 ,
|
|
.Xr schedctl 8 ,
|
|
.Xr kcpuset 9
|
|
.Sh HISTORY
|
|
The dynamic CPU sets appeared in
|
|
.Nx 5.0 .
|