_cpuset.h revision 221499 
1/*-
2 * Copyright (c) 2008,	Jeffrey Roberson <jeff@freebsd.org>
3 * All rights reserved.
4 *
5 * Copyright (c) 2008 Nokia Corporation
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD: projects/largeSMP/sys/sys/_cpuset.h 221499 2011-05-05 14:39:14Z attilio $
30 */
31
32#ifndef _SYS__CPUSET_H_
33#define	_SYS__CPUSET_H_
34
35#ifdef _KERNEL
36#define	CPU_SETSIZE	MAXCPU
37#endif
38
39#define	CPU_MAXSIZE	(4 * MAXCPU)
40
41#ifndef	CPU_SETSIZE
42#define	CPU_SETSIZE	CPU_MAXSIZE
43#endif
44
45#define	_NCPUBITS	(sizeof(long) * NBBY)	/* bits per mask */
46#define	_NCPUWORDS	howmany(CPU_SETSIZE, _NCPUBITS)
47
48typedef	struct _cpuset {
49	long	__bits[howmany(CPU_SETSIZE, _NCPUBITS)];
50} cpuset_t;
51
52#endif /* !_SYS__CPUSET_H_ */
53