runq.h revision 129198
1129198Scognet/* 2129198Scognet * Copyright (c) 2001 Jake Burkholder <jake@FreeBSD.org> 3129198Scognet * All rights reserved. 4129198Scognet * 5129198Scognet * Redistribution and use in source and binary forms, with or without 6129198Scognet * modification, are permitted provided that the following conditions 7129198Scognet * are met: 8129198Scognet * 1. Redistributions of source code must retain the above copyright 9129198Scognet * notice, this list of conditions and the following disclaimer. 10129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 11129198Scognet * notice, this list of conditions and the following disclaimer in the 12129198Scognet * documentation and/or other materials provided with the distribution. 13129198Scognet * 14129198Scognet * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15129198Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16129198Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17129198Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18129198Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19129198Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20129198Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24129198Scognet * SUCH DAMAGE. 25129198Scognet * 26129198Scognet * $FreeBSD: head/sys/arm/include/runq.h 129198 2004-05-14 11:46:45Z cognet $ 27129198Scognet */ 28129198Scognet 29129198Scognet#ifndef _MACHINE_RUNQ_H_ 30129198Scognet#define _MACHINE_RUNQ_H_ 31129198Scognet 32129198Scognet#define RQB_LEN (2) /* Number of priority status words. */ 33129198Scognet#define RQB_L2BPW (5) /* Log2(sizeof(rqb_word_t) * NBBY)). */ 34129198Scognet#define RQB_BPW (1<<RQB_L2BPW) /* Bits in an rqb_word_t. */ 35129198Scognet 36129198Scognet#define RQB_BIT(pri) (1 << ((pri) & (RQB_BPW - 1))) 37129198Scognet#define RQB_WORD(pri) ((pri) >> RQB_L2BPW) 38129198Scognet 39129198Scognet#define RQB_FFS(word) (ffs(word) - 1) 40129198Scognet 41129198Scognet/* 42129198Scognet * Type of run queue status word. 43129198Scognet */ 44129198Scognettypedef u_int32_t rqb_word_t; 45129198Scognet 46129198Scognet#endif 47