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