1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1992, 1994, 1998 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <sys/types.h>
30*0Sstevel@tonic-gate #include <sys/param.h>
31*0Sstevel@tonic-gate #include <sys/var.h>
32*0Sstevel@tonic-gate #include <sys/thread.h>
33*0Sstevel@tonic-gate #include <sys/cpuvar.h>
34*0Sstevel@tonic-gate #include <sys/kstat.h>
35*0Sstevel@tonic-gate #include <sys/uadmin.h>
36*0Sstevel@tonic-gate #include <sys/systm.h>
37*0Sstevel@tonic-gate #include <sys/errno.h>
38*0Sstevel@tonic-gate #include <sys/cmn_err.h>
39*0Sstevel@tonic-gate #include <sys/procset.h>
40*0Sstevel@tonic-gate #include <sys/processor.h>
41*0Sstevel@tonic-gate #include <sys/debug.h>
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate /*
44*0Sstevel@tonic-gate * processor_info(2) - return information on a processor.
45*0Sstevel@tonic-gate */
46*0Sstevel@tonic-gate int
processor_info(processorid_t cpun,processor_info_t * infop)47*0Sstevel@tonic-gate processor_info(processorid_t cpun, processor_info_t *infop)
48*0Sstevel@tonic-gate {
49*0Sstevel@tonic-gate cpu_t *cp;
50*0Sstevel@tonic-gate processor_info_t temp;
51*0Sstevel@tonic-gate
52*0Sstevel@tonic-gate mutex_enter(&cpu_lock);
53*0Sstevel@tonic-gate if ((cp = cpu_get(cpun)) == NULL) {
54*0Sstevel@tonic-gate mutex_exit(&cpu_lock);
55*0Sstevel@tonic-gate return (set_errno(EINVAL));
56*0Sstevel@tonic-gate }
57*0Sstevel@tonic-gate bcopy(&cp->cpu_type_info, &temp, sizeof (temp));
58*0Sstevel@tonic-gate mutex_exit(&cpu_lock);
59*0Sstevel@tonic-gate
60*0Sstevel@tonic-gate /*
61*0Sstevel@tonic-gate * The spec indicates that the rest of the information is meaningless
62*0Sstevel@tonic-gate * if the CPU is offline, but if presented by the machine-dependent
63*0Sstevel@tonic-gate * layer, it is probably still accurate. It seems OK to copy it all in
64*0Sstevel@tonic-gate * either case.
65*0Sstevel@tonic-gate */
66*0Sstevel@tonic-gate if (copyout((caddr_t)&temp, (caddr_t)infop,
67*0Sstevel@tonic-gate sizeof (processor_info_t)))
68*0Sstevel@tonic-gate return (set_errno(EFAULT));
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate return (0);
71*0Sstevel@tonic-gate }
72