1/*-
2 * Copyright (c) 2001 Jake Burkholder <jake@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	from: src/sys/i386/include/runq.h,v 1.3 2005/01/06 22:18:15 imp
27 * $FreeBSD$
28 */
29
30#ifndef _MACHINE_RUNQ_H_
31#define	_MACHINE_RUNQ_H_
32
33#ifdef __mips_n64
34#define	RQB_LEN		(1)		/* Number of priority status words. */
35#define	RQB_L2BPW	(6)		/* Log2(sizeof(rqb_word_t) * NBBY)). */
36#else
37#define	RQB_LEN		(2)		/* Number of priority status words. */
38#define	RQB_L2BPW	(5)		/* Log2(sizeof(rqb_word_t) * NBBY)). */
39#endif
40#define	RQB_BPW		(1<<RQB_L2BPW)	/* Bits in an rqb_word_t. */
41
42#define	RQB_BIT(pri)	(1ul << ((pri) & (RQB_BPW - 1)))
43#define	RQB_WORD(pri)	((pri) >> RQB_L2BPW)
44
45#ifdef __mips_n64
46#define	RQB_FFS(word)	(ffsl(word) - 1)
47#else
48#define	RQB_FFS(word)	(ffs(word) - 1)
49#endif
50
51/*
52 * Type of run queue status word.
53 */
54#ifdef __mips_n64
55typedef	u_int64_t	rqb_word_t;
56#else
57typedef	u_int32_t	rqb_word_t;
58#endif
59
60#endif
61