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: releng/9.0/sys/mips/include/runq.h 210605 2010-07-29 13:52:46Z jchandra $
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
55 typedef u_int64_t rqb_word_t;
56 #else
57 typedef u_int32_t rqb_word_t;
58 #endif
59
60 #endif
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