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39613766 FW |
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 | ||
8c23b80e KH |
19 | #include <linux/math64.h> |
20 | ||
39613766 FW |
21 | typedef u64 __nocast cputime_t; |
22 | typedef u64 __nocast cputime64_t; | |
23 | ||
347abad9 RR |
24 | #define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) |
25 | ||
39613766 FW |
26 | #define cputime_one_jiffy jiffies_to_cputime(1) |
27 | ||
8c23b80e KH |
28 | #define cputime_div(__ct, divisor) div_u64((__force u64)__ct, divisor) |
29 | #define cputime_div_rem(__ct, divisor, remainder) \ | |
30 | div_u64_rem((__force u64)__ct, divisor, remainder); | |
31 | ||
39613766 FW |
32 | /* |
33 | * Convert cputime <-> jiffies (HZ) | |
34 | */ | |
35 | #define cputime_to_jiffies(__ct) \ | |
8c23b80e | 36 | cputime_div(__ct, NSEC_PER_SEC / HZ) |
39613766 FW |
37 | #define jiffies_to_cputime(__jif) \ |
38 | (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ)) | |
39 | #define cputime64_to_jiffies64(__ct) \ | |
8c23b80e | 40 | cputime_div(__ct, NSEC_PER_SEC / HZ) |
39613766 FW |
41 | #define jiffies64_to_cputime64(__jif) \ |
42 | (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ)) | |
43 | ||
abf917cd FW |
44 | |
45 | /* | |
46 | * Convert cputime <-> nanoseconds | |
47 | */ | |
d8a9ce3f FW |
48 | #define cputime_to_nsecs(__ct) \ |
49 | (__force u64)(__ct) | |
69bb2600 FW |
50 | #define nsecs_to_cputime(__nsecs) \ |
51 | (__force cputime_t)(__nsecs) | |
57430218 RR |
52 | #define nsecs_to_cputime64(__nsecs) \ |
53 | (__force cputime64_t)(__nsecs) | |
abf917cd FW |
54 | |
55 | ||
39613766 FW |
56 | /* |
57 | * Convert cputime <-> microseconds | |
58 | */ | |
59 | #define cputime_to_usecs(__ct) \ | |
8c23b80e | 60 | cputime_div(__ct, NSEC_PER_USEC) |
39613766 FW |
61 | #define usecs_to_cputime(__usecs) \ |
62 | (__force cputime_t)((__usecs) * NSEC_PER_USEC) | |
63 | #define usecs_to_cputime64(__usecs) \ | |
64 | (__force cputime64_t)((__usecs) * NSEC_PER_USEC) | |
65 | ||
66 | /* | |
67 | * Convert cputime <-> seconds | |
68 | */ | |
69 | #define cputime_to_secs(__ct) \ | |
8c23b80e | 70 | cputime_div(__ct, NSEC_PER_SEC) |
39613766 FW |
71 | #define secs_to_cputime(__secs) \ |
72 | (__force cputime_t)((__secs) * NSEC_PER_SEC) | |
73 | ||
74 | /* | |
75 | * Convert cputime <-> timespec (nsec) | |
76 | */ | |
77 | static inline cputime_t timespec_to_cputime(const struct timespec *val) | |
78 | { | |
0f26922f | 79 | u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_nsec; |
39613766 FW |
80 | return (__force cputime_t) ret; |
81 | } | |
82 | static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) | |
83 | { | |
8c23b80e KH |
84 | u32 rem; |
85 | ||
86 | val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); | |
87 | val->tv_nsec = rem; | |
39613766 FW |
88 | } |
89 | ||
90 | /* | |
91 | * Convert cputime <-> timeval (msec) | |
92 | */ | |
c78a4bcd | 93 | static inline cputime_t timeval_to_cputime(const struct timeval *val) |
39613766 | 94 | { |
0f26922f | 95 | u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + |
96 | val->tv_usec * NSEC_PER_USEC; | |
39613766 FW |
97 | return (__force cputime_t) ret; |
98 | } | |
99 | static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) | |
100 | { | |
8c23b80e KH |
101 | u32 rem; |
102 | ||
103 | val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); | |
104 | val->tv_usec = rem / NSEC_PER_USEC; | |
39613766 FW |
105 | } |
106 | ||
107 | /* | |
108 | * Convert cputime <-> clock (USER_HZ) | |
109 | */ | |
110 | #define cputime_to_clock_t(__ct) \ | |
8c23b80e | 111 | cputime_div(__ct, (NSEC_PER_SEC / USER_HZ)) |
39613766 FW |
112 | #define clock_t_to_cputime(__x) \ |
113 | (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ)) | |
114 | ||
115 | /* | |
116 | * Convert cputime64 to clock. | |
117 | */ | |
118 | #define cputime64_to_clock_t(__ct) \ | |
119 | cputime_to_clock_t((__force cputime_t)__ct) | |
120 | ||
121 | #endif |