xref: /freebsd/sys/arm64/include/runq.h (revision 7ef62cebc2f965b0f640263e179276928885e33d)
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  * $FreeBSD$
27  */
28 
29 #ifdef __arm__
30 #include <arm/runq.h>
31 #else /* !__arm__ */
32 
33 #ifndef	_MACHINE_RUNQ_H_
34 #define	_MACHINE_RUNQ_H_
35 
36 #define	RQB_LEN		(1)		/* Number of priority status words. */
37 #define	RQB_L2BPW	(6)		/* Log2(sizeof(rqb_word_t) * NBBY)). */
38 #define	RQB_BPW		(1<<RQB_L2BPW)	/* Bits in an rqb_word_t. */
39 
40 #define	RQB_BIT(pri)	(1ul << ((pri) & (RQB_BPW - 1)))
41 #define	RQB_WORD(pri)	((pri) >> RQB_L2BPW)
42 
43 #define	RQB_FFS(word)	(ffsl(word) - 1)
44 
45 /*
46  * Type of run queue status word.
47  */
48 typedef	unsigned long	rqb_word_t;
49 
50 #endif
51 
52 #endif /* !__arm__ */
53