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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 | ||
19 | typedef u64 __nocast cputime_t; | |
20 | typedef u64 __nocast cputime64_t; | |
21 | ||
22 | #define cputime_one_jiffy jiffies_to_cputime(1) | |
23 | ||
24 | /* | |
25 | * Convert cputime <-> jiffies (HZ) | |
26 | */ | |
27 | #define cputime_to_jiffies(__ct) \ | |
28 | ((__force u64)(__ct) / (NSEC_PER_SEC / HZ)) | |
abf917cd | 29 | #define cputime_to_scaled(__ct) (__ct) |
39613766 FW |
30 | #define jiffies_to_cputime(__jif) \ |
31 | (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ)) | |
32 | #define cputime64_to_jiffies64(__ct) \ | |
33 | ((__force u64)(__ct) / (NSEC_PER_SEC / HZ)) | |
34 | #define jiffies64_to_cputime64(__jif) \ | |
35 | (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ)) | |
36 | ||
abf917cd FW |
37 | |
38 | /* | |
39 | * Convert cputime <-> nanoseconds | |
40 | */ | |
41 | #define nsecs_to_cputime(__nsecs) ((__force u64)(__nsecs)) | |
42 | ||
43 | ||
39613766 FW |
44 | /* |
45 | * Convert cputime <-> microseconds | |
46 | */ | |
47 | #define cputime_to_usecs(__ct) \ | |
48 | ((__force u64)(__ct) / NSEC_PER_USEC) | |
49 | #define usecs_to_cputime(__usecs) \ | |
50 | (__force cputime_t)((__usecs) * NSEC_PER_USEC) | |
51 | #define usecs_to_cputime64(__usecs) \ | |
52 | (__force cputime64_t)((__usecs) * NSEC_PER_USEC) | |
53 | ||
54 | /* | |
55 | * Convert cputime <-> seconds | |
56 | */ | |
57 | #define cputime_to_secs(__ct) \ | |
58 | ((__force u64)(__ct) / NSEC_PER_SEC) | |
59 | #define secs_to_cputime(__secs) \ | |
60 | (__force cputime_t)((__secs) * NSEC_PER_SEC) | |
61 | ||
62 | /* | |
63 | * Convert cputime <-> timespec (nsec) | |
64 | */ | |
65 | static inline cputime_t timespec_to_cputime(const struct timespec *val) | |
66 | { | |
67 | u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec; | |
68 | return (__force cputime_t) ret; | |
69 | } | |
70 | static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) | |
71 | { | |
72 | val->tv_sec = (__force u64) ct / NSEC_PER_SEC; | |
73 | val->tv_nsec = (__force u64) ct % NSEC_PER_SEC; | |
74 | } | |
75 | ||
76 | /* | |
77 | * Convert cputime <-> timeval (msec) | |
78 | */ | |
79 | static inline cputime_t timeval_to_cputime(struct timeval *val) | |
80 | { | |
81 | u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC; | |
82 | return (__force cputime_t) ret; | |
83 | } | |
84 | static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) | |
85 | { | |
86 | val->tv_sec = (__force u64) ct / NSEC_PER_SEC; | |
87 | val->tv_usec = ((__force u64) ct % NSEC_PER_SEC) / NSEC_PER_USEC; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Convert cputime <-> clock (USER_HZ) | |
92 | */ | |
93 | #define cputime_to_clock_t(__ct) \ | |
94 | ((__force u64)(__ct) / (NSEC_PER_SEC / USER_HZ)) | |
95 | #define clock_t_to_cputime(__x) \ | |
96 | (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ)) | |
97 | ||
98 | /* | |
99 | * Convert cputime64 to clock. | |
100 | */ | |
101 | #define cputime64_to_clock_t(__ct) \ | |
102 | cputime_to_clock_t((__force cputime_t)__ct) | |
103 | ||
104 | #endif |