From 88bdee3b2f9048a8dbf72ac87d2777d86fb44e03 Mon Sep 17 00:00:00 2001 From: jake Date: Sat, 25 May 2002 01:12:23 +0000 Subject: Make the run queue parameters machine dependent. Optimize 64 bit architectures by using a 64 bit word for the bit array which keeps track of non-empty queues. Reviewed by: peter --- sys/powerpc/include/runq.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sys/powerpc/include/runq.h (limited to 'sys/powerpc') diff --git a/sys/powerpc/include/runq.h b/sys/powerpc/include/runq.h new file mode 100644 index 0000000..1ea7735 --- /dev/null +++ b/sys/powerpc/include/runq.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2001 Jake Burkholder + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_RUNQ_H_ +#define _MACHINE_RUNQ_H_ + +#define RQB_LEN (2) /* Number of priority status words. */ +#define RQB_L2BPW (5) /* Log2(sizeof(rqb_word_t) * NBBY)). */ +#define RQB_BPW (1<> RQB_L2BPW) + +#define RQB_FFS(word) (ffs(word)) + +/* + * Type of run queue status word. + */ +typedef u_int32_t rqb_word_t; + +#endif -- cgit v1.1