Edit File: cputime_nsecs.h
/* * 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 cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) #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 cputime_to_nsecs(__ct) \ (__force u64)(__ct) #define nsecs_to_cputime(__nsecs) ((__force u64)(__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