1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* libcfs/include/libcfs/linux/linux-time.h
*
* Implementation of portable time API for Linux (kernel and user-level).
*
* Author: Nikita Danilov <nikita@clusterfs.com>
*/
#ifndef __LIBCFS_LINUX_LINUX_TIME_H__
#define __LIBCFS_LINUX_LINUX_TIME_H__
#ifndef __LIBCFS_LIBCFS_H__
#error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead
#endif
#define ONE_BILLION ((u_int64_t)1000000000)
#define ONE_MILLION 1000000
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <asm/div64.h>
#include "portals_compat25.h"
/*
* post 2.5 kernels.
*/
#include <linux/jiffies.h>
static inline void cfs_fs_time_usec(struct timespec *t, struct timeval *v)
{
v->tv_sec = t->tv_sec;
v->tv_usec = t->tv_nsec / 1000;
}
/*
* Generic kernel stuff
*/
static inline unsigned long cfs_time_current(void)
{
return jiffies;
}
static inline void cfs_fs_time_current(struct timespec *t)
{
*t = CURRENT_TIME;
}
static inline time_t cfs_fs_time_sec(struct timespec *t)
{
return t->tv_sec;
}
static inline long cfs_time_seconds(int seconds)
{
return ((long)seconds) * HZ;
}
static inline time_t cfs_duration_sec(long d)
{
return d / HZ;
}
static inline void cfs_duration_usec(long d, struct timeval *s)
{
#if (BITS_PER_LONG == 32) && (HZ > 4096)
__u64 t;
s->tv_sec = d / HZ;
t = (d - (long)s->tv_sec * HZ) * ONE_MILLION;
do_div(t, HZ);
s->tv_usec = t;
#else
s->tv_sec = d / HZ;
s->tv_usec = ((d - (long)s->tv_sec * HZ) * \
ONE_MILLION) / HZ;
#endif
}
#define cfs_time_current_64 get_jiffies_64
static inline __u64 cfs_time_add_64(__u64 t, __u64 d)
{
return t + d;
}
static inline __u64 cfs_time_shift_64(int seconds)
{
return cfs_time_add_64(cfs_time_current_64(),
cfs_time_seconds(seconds));
}
static inline int cfs_time_before_64(__u64 t1, __u64 t2)
{
return (__s64)t2 - (__s64)t1 > 0;
}
static inline int cfs_time_beforeq_64(__u64 t1, __u64 t2)
{
return (__s64)t2 - (__s64)t1 >= 0;
}
/*
* One jiffy
*/
#define CFS_TICK (1)
#define CFS_TIME_T "%lu"
#define CFS_DURATION_T "%ld"
#endif /* __LIBCFS_LINUX_LINUX_TIME_H__ */
|
