Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 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 | |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 19 | #include <linux/math64.h> |
| 20 | |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 21 | typedef u64 __nocast cputime_t; |
| 22 | typedef u64 __nocast cputime64_t; |
| 23 | |
| 24 | #define cputime_one_jiffy jiffies_to_cputime(1) |
| 25 | |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 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 | |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 30 | /* |
| 31 | * Convert cputime <-> jiffies (HZ) |
| 32 | */ |
| 33 | #define cputime_to_jiffies(__ct) \ |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 34 | cputime_div(__ct, NSEC_PER_SEC / HZ) |
Frederic Weisbecker | abf917c | 2012-07-25 07:56:04 +0200 | [diff] [blame] | 35 | #define cputime_to_scaled(__ct) (__ct) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 36 | #define jiffies_to_cputime(__jif) \ |
| 37 | (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ)) |
| 38 | #define cputime64_to_jiffies64(__ct) \ |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 39 | cputime_div(__ct, NSEC_PER_SEC / HZ) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 40 | #define jiffies64_to_cputime64(__jif) \ |
| 41 | (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ)) |
| 42 | |
Frederic Weisbecker | abf917c | 2012-07-25 07:56:04 +0200 | [diff] [blame] | 43 | |
| 44 | /* |
| 45 | * Convert cputime <-> nanoseconds |
| 46 | */ |
Frederic Weisbecker | 69bb2600 | 2014-03-05 15:33:18 +0100 | [diff] [blame] | 47 | #define nsecs_to_cputime(__nsecs) \ |
| 48 | (__force cputime_t)(__nsecs) |
Frederic Weisbecker | abf917c | 2012-07-25 07:56:04 +0200 | [diff] [blame] | 49 | |
| 50 | |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 51 | /* |
| 52 | * Convert cputime <-> microseconds |
| 53 | */ |
| 54 | #define cputime_to_usecs(__ct) \ |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 55 | cputime_div(__ct, NSEC_PER_USEC) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 56 | #define usecs_to_cputime(__usecs) \ |
| 57 | (__force cputime_t)((__usecs) * NSEC_PER_USEC) |
| 58 | #define usecs_to_cputime64(__usecs) \ |
| 59 | (__force cputime64_t)((__usecs) * NSEC_PER_USEC) |
| 60 | |
| 61 | /* |
| 62 | * Convert cputime <-> seconds |
| 63 | */ |
| 64 | #define cputime_to_secs(__ct) \ |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 65 | cputime_div(__ct, NSEC_PER_SEC) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 66 | #define secs_to_cputime(__secs) \ |
| 67 | (__force cputime_t)((__secs) * NSEC_PER_SEC) |
| 68 | |
| 69 | /* |
| 70 | * Convert cputime <-> timespec (nsec) |
| 71 | */ |
| 72 | static inline cputime_t timespec_to_cputime(const struct timespec *val) |
| 73 | { |
| 74 | u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec; |
| 75 | return (__force cputime_t) ret; |
| 76 | } |
| 77 | static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) |
| 78 | { |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 79 | u32 rem; |
| 80 | |
| 81 | val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); |
| 82 | val->tv_nsec = rem; |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Convert cputime <-> timeval (msec) |
| 87 | */ |
Li Zhong | c78a4bc | 2013-02-23 17:28:44 +0100 | [diff] [blame] | 88 | static inline cputime_t timeval_to_cputime(const struct timeval *val) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 89 | { |
| 90 | u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC; |
| 91 | return (__force cputime_t) ret; |
| 92 | } |
| 93 | static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) |
| 94 | { |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 95 | u32 rem; |
| 96 | |
| 97 | val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); |
| 98 | val->tv_usec = rem / NSEC_PER_USEC; |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* |
| 102 | * Convert cputime <-> clock (USER_HZ) |
| 103 | */ |
| 104 | #define cputime_to_clock_t(__ct) \ |
Kevin Hilman | 8c23b80 | 2013-03-20 16:34:25 -0700 | [diff] [blame] | 105 | cputime_div(__ct, (NSEC_PER_SEC / USER_HZ)) |
Frederic Weisbecker | 3961376 | 2013-01-15 13:25:07 +0100 | [diff] [blame] | 106 | #define clock_t_to_cputime(__x) \ |
| 107 | (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ)) |
| 108 | |
| 109 | /* |
| 110 | * Convert cputime64 to clock. |
| 111 | */ |
| 112 | #define cputime64_to_clock_t(__ct) \ |
| 113 | cputime_to_clock_t((__force cputime_t)__ct) |
| 114 | |
| 115 | #endif |