1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright 1994 - 2000 Ralf Baechle (ralf@gnu.org)
7 * Copyright 2000 Silicon Graphics, Inc.
8 */
9#ifndef _ASM_PARAM_H
10#define _ASM_PARAM_H
11
12#ifndef HZ
13
14#ifdef __KERNEL__
15
16/* Safeguard against user stupidity  */
17#ifdef _SYS_PARAM_H
18#error Do not include <asm/param.h> with __KERNEL__ defined!
19#endif
20
21#include <linux/config.h>
22
23#ifdef CONFIG_DECSTATION
24   /*
25    * log2(HZ), change this here if you want another HZ value. This is also
26    * used in dec_time_init.  Minimum is 1, Maximum is 15.
27    */
28#  define LOG_2_HZ 7
29#  define HZ (1 << LOG_2_HZ)
30   /*
31    * Ye olde division-by-multiplication trick.
32    * This works only if 100 / HZ <= 1
33    */
34#  define QUOTIENT ((1UL << (64 - LOG_2_HZ)) * 100)
35#  define hz_to_std(a)				\
36   ({ unsigned long __res;			\
37      unsigned long __lo;			\
38	__asm__("dmultu\t%2,%3\n\t"		\
39		:"=h" (__res), "=l" (__lo)	\
40		:"r" (a), "r" (QUOTIENT));	\
41	(__typeof__(a)) __res;})
42
43#else /* Not a DECstation  */
44
45/* This is the internal value of HZ, that is the rate at which the jiffies
46   counter is increasing.  This value is independent from the external value
47   and can be changed in order to suit the hardware and application
48   requirements.  */
49#  define HZ 100
50#  define hz_to_std(a) (a)
51
52#endif /* Not a DECstation  */
53
54#else /* defined(__KERNEL__)  */
55
56/* This is the external value of HZ as seen by user programs.  Don't change
57   unless you know what you're doing - changing breaks binary compatibility.  */
58#define HZ 100
59
60#endif /* defined(__KERNEL__)  */
61#endif /* defined(HZ)  */
62
63#define EXEC_PAGESIZE	4096
64
65#ifndef NGROUPS
66#define NGROUPS		32
67#endif
68
69#ifndef NOGROUP
70#define NOGROUP		(-1)
71#endif
72
73#define MAXHOSTNAMELEN	64	/* max length of hostname */
74
75#ifdef __KERNEL__
76# define CLOCKS_PER_SEC	100	/* frequency at which times() counts */
77#endif
78
79#endif /* _ASM_PARAM_H */
80