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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1992, 1994, 1998 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/var.h>
#include <sys/thread.h>
#include <sys/cpuvar.h>
#include <sys/kstat.h>
#include <sys/uadmin.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/cmn_err.h>
#include <sys/procset.h>
#include <sys/processor.h>
#include <sys/debug.h>
/*
* processor_info(2) - return information on a processor.
*/
int
processor_info(processorid_t cpun, processor_info_t *infop)
{
cpu_t *cp;
processor_info_t temp;
mutex_enter(&cpu_lock);
if ((cp = cpu_get(cpun)) == NULL) {
mutex_exit(&cpu_lock);
return (set_errno(EINVAL));
}
bcopy(&cp->cpu_type_info, &temp, sizeof (temp));
mutex_exit(&cpu_lock);
/*
* The spec indicates that the rest of the information is meaningless
* if the CPU is offline, but if presented by the machine-dependent
* layer, it is probably still accurate. It seems OK to copy it all in
* either case.
*/
if (copyout((caddr_t)&temp, (caddr_t)infop,
sizeof (processor_info_t)))
return (set_errno(EFAULT));
return (0);
}
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