arch, mm: Remove tlb_fast_mode()
[linux-3.10.git] / include / asm-generic / cputime_nsecs.h
1 /*
2  * Definitions for measuring cputime in nsecs resolution.
3  *
4  * Based on <arch/ia64/include/asm/cputime.h>
5  *
6  * Copyright (C) 2007 FUJITSU LIMITED
7  * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version
12  * 2 of the License, or (at your option) any later version.
13  *
14  */
15
16 #ifndef _ASM_GENERIC_CPUTIME_NSECS_H
17 #define _ASM_GENERIC_CPUTIME_NSECS_H
18
19 #include <linux/math64.h>
20
21 typedef u64 __nocast cputime_t;
22 typedef u64 __nocast cputime64_t;
23
24 #define cputime_one_jiffy               jiffies_to_cputime(1)
25
26 #define cputime_div(__ct, divisor)  div_u64((__force u64)__ct, divisor)
27 #define cputime_div_rem(__ct, divisor, remainder) \
28         div_u64_rem((__force u64)__ct, divisor, remainder);
29
30 /*
31  * Convert cputime <-> jiffies (HZ)
32  */
33 #define cputime_to_jiffies(__ct)        \
34         cputime_div(__ct, NSEC_PER_SEC / HZ)
35 #define cputime_to_scaled(__ct)         (__ct)
36 #define jiffies_to_cputime(__jif)       \
37         (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
38 #define cputime64_to_jiffies64(__ct)    \
39         cputime_div(__ct, NSEC_PER_SEC / HZ)
40 #define jiffies64_to_cputime64(__jif)   \
41         (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
42
43
44 /*
45  * Convert cputime <-> nanoseconds
46  */
47 #define nsecs_to_cputime(__nsecs)       ((__force u64)(__nsecs))
48
49
50 /*
51  * Convert cputime <-> microseconds
52  */
53 #define cputime_to_usecs(__ct)          \
54         cputime_div(__ct, NSEC_PER_USEC)
55 #define usecs_to_cputime(__usecs)       \
56         (__force cputime_t)((__usecs) * NSEC_PER_USEC)
57 #define usecs_to_cputime64(__usecs)     \
58         (__force cputime64_t)((__usecs) * NSEC_PER_USEC)
59
60 /*
61  * Convert cputime <-> seconds
62  */
63 #define cputime_to_secs(__ct)           \
64         cputime_div(__ct, NSEC_PER_SEC)
65 #define secs_to_cputime(__secs)         \
66         (__force cputime_t)((__secs) * NSEC_PER_SEC)
67
68 /*
69  * Convert cputime <-> timespec (nsec)
70  */
71 static inline cputime_t timespec_to_cputime(const struct timespec *val)
72 {
73         u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
74         return (__force cputime_t) ret;
75 }
76 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
77 {
78         u32 rem;
79
80         val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
81         val->tv_nsec = rem;
82 }
83
84 /*
85  * Convert cputime <-> timeval (msec)
86  */
87 static inline cputime_t timeval_to_cputime(const struct timeval *val)
88 {
89         u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
90         return (__force cputime_t) ret;
91 }
92 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
93 {
94         u32 rem;
95
96         val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
97         val->tv_usec = rem / NSEC_PER_USEC;
98 }
99
100 /*
101  * Convert cputime <-> clock (USER_HZ)
102  */
103 #define cputime_to_clock_t(__ct)        \
104         cputime_div(__ct, (NSEC_PER_SEC / USER_HZ))
105 #define clock_t_to_cputime(__x)         \
106         (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
107
108 /*
109  * Convert cputime64 to clock.
110  */
111 #define cputime64_to_clock_t(__ct)      \
112         cputime_to_clock_t((__force cputime_t)__ct)
113
114 #endif