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