| /* |
| * Definitions for measuring cputime in nsecs resolution. |
| * |
| * Based on <arch/ia64/include/asm/cputime.h> |
| * |
| * Copyright (C) 2007 FUJITSU LIMITED |
| * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| */ |
| |
| #ifndef _ASM_GENERIC_CPUTIME_NSECS_H |
| #define _ASM_GENERIC_CPUTIME_NSECS_H |
| |
| #include <linux/math64.h> |
| |
| typedef u64 __nocast cputime_t; |
| typedef u64 __nocast cputime64_t; |
| |
| #define cputime_one_jiffy jiffies_to_cputime(1) |
| |
| #define cputime_div(__ct, divisor) div_u64((__force u64)__ct, divisor) |
| #define cputime_div_rem(__ct, divisor, remainder) \ |
| div_u64_rem((__force u64)__ct, divisor, remainder); |
| |
| /* |
| * Convert cputime <-> jiffies (HZ) |
| */ |
| #define cputime_to_jiffies(__ct) \ |
| cputime_div(__ct, NSEC_PER_SEC / HZ) |
| #define cputime_to_scaled(__ct) (__ct) |
| #define jiffies_to_cputime(__jif) \ |
| (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ)) |
| #define cputime64_to_jiffies64(__ct) \ |
| cputime_div(__ct, NSEC_PER_SEC / HZ) |
| #define jiffies64_to_cputime64(__jif) \ |
| (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ)) |
| |
| |
| /* |
| * Convert cputime <-> nanoseconds |
| */ |
| #define nsecs_to_cputime(__nsecs) \ |
| (__force cputime_t)(__nsecs) |
| |
| |
| /* |
| * Convert cputime <-> microseconds |
| */ |
| #define cputime_to_usecs(__ct) \ |
| cputime_div(__ct, NSEC_PER_USEC) |
| #define usecs_to_cputime(__usecs) \ |
| (__force cputime_t)((__usecs) * NSEC_PER_USEC) |
| #define usecs_to_cputime64(__usecs) \ |
| (__force cputime64_t)((__usecs) * NSEC_PER_USEC) |
| |
| /* |
| * Convert cputime <-> seconds |
| */ |
| #define cputime_to_secs(__ct) \ |
| cputime_div(__ct, NSEC_PER_SEC) |
| #define secs_to_cputime(__secs) \ |
| (__force cputime_t)((__secs) * NSEC_PER_SEC) |
| |
| /* |
| * Convert cputime <-> timespec (nsec) |
| */ |
| static inline cputime_t timespec_to_cputime(const struct timespec *val) |
| { |
| u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec; |
| return (__force cputime_t) ret; |
| } |
| static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) |
| { |
| u32 rem; |
| |
| val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); |
| val->tv_nsec = rem; |
| } |
| |
| /* |
| * Convert cputime <-> timeval (msec) |
| */ |
| static inline cputime_t timeval_to_cputime(const struct timeval *val) |
| { |
| u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC; |
| return (__force cputime_t) ret; |
| } |
| static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) |
| { |
| u32 rem; |
| |
| val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); |
| val->tv_usec = rem / NSEC_PER_USEC; |
| } |
| |
| /* |
| * Convert cputime <-> clock (USER_HZ) |
| */ |
| #define cputime_to_clock_t(__ct) \ |
| cputime_div(__ct, (NSEC_PER_SEC / USER_HZ)) |
| #define clock_t_to_cputime(__x) \ |
| (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ)) |
| |
| /* |
| * Convert cputime64 to clock. |
| */ |
| #define cputime64_to_clock_t(__ct) \ |
| cputime_to_clock_t((__force cputime_t)__ct) |
| |
| #endif |