[deliverable/linux.git] / include / asm-powerpc / cputime.h

/*
 * Definitions for measuring cputime on powerpc machines.
 *
 * Copyright (C) 2006 Paul Mackerras, IBM Corp.
 *
 * 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.
 *
 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in
 * the same units as the timebase.  Otherwise we measure cpu time
 * in jiffies using the generic definitions.
 */

#ifndef __POWERPC_CPUTIME_H
#define __POWERPC_CPUTIME_H

#ifndef CONFIG_VIRT_CPU_ACCOUNTING
#include <asm-generic/cputime.h>
#else

#include <linux/types.h>
#include <linux/time.h>
#include <asm/div64.h>
#include <asm/time.h>
#include <asm/param.h>

typedef u64 cputime_t;
typedef u64 cputime64_t;

#define cputime_zero			((cputime_t)0)
#define cputime_max			((~((cputime_t)0) >> 1) - 1)
#define cputime_add(__a, __b)		((__a) +  (__b))
#define cputime_sub(__a, __b)		((__a) -  (__b))
#define cputime_div(__a, __n)		((__a) /  (__n))
#define cputime_halve(__a)		((__a) >> 1)
#define cputime_eq(__a, __b)		((__a) == (__b))
#define cputime_gt(__a, __b)		((__a) >  (__b))
#define cputime_ge(__a, __b)		((__a) >= (__b))
#define cputime_lt(__a, __b)		((__a) <  (__b))
#define cputime_le(__a, __b)		((__a) <= (__b))

#define cputime64_zero			((cputime64_t)0)
#define cputime64_add(__a, __b)		((__a) + (__b))
#define cputime64_sub(__a, __b)		((__a) - (__b))
#define cputime_to_cputime64(__ct)	(__ct)

#ifdef __KERNEL__

/*
 * Convert cputime <-> jiffies
 */
extern u64 __cputime_jiffies_factor;

static inline unsigned long cputime_to_jiffies(const cputime_t ct)
{
	return mulhdu(ct, __cputime_jiffies_factor);
}

static inline cputime_t jiffies_to_cputime(const unsigned long jif)
{
	cputime_t ct;
	unsigned long sec;

	/* have to be a little careful about overflow */
	ct = jif % HZ;
	sec = jif / HZ;
	if (ct) {
		ct *= tb_ticks_per_sec;
		do_div(ct, HZ);
	}
	if (sec)
		ct += (cputime_t) sec * tb_ticks_per_sec;
	return ct;
}

static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
{
	cputime_t ct;
	u64 sec;

	/* have to be a little careful about overflow */
	ct = jif % HZ;
	sec = jif / HZ;
	if (ct) {
		ct *= tb_ticks_per_sec;
		do_div(ct, HZ);
	}
	if (sec)
		ct += (cputime_t) sec * tb_ticks_per_sec;
	return ct;
}

static inline u64 cputime64_to_jiffies64(const cputime_t ct)
{
	return mulhdu(ct, __cputime_jiffies_factor);
}

/*
 * Convert cputime <-> milliseconds
 */
extern u64 __cputime_msec_factor;

static inline unsigned long cputime_to_msecs(const cputime_t ct)
{
	return mulhdu(ct, __cputime_msec_factor);
}

static inline cputime_t msecs_to_cputime(const unsigned long ms)
{
	cputime_t ct;
	unsigned long sec;

	/* have to be a little careful about overflow */
	ct = ms % 1000;
	sec = ms / 1000;
	if (ct) {
		ct *= tb_ticks_per_sec;
		do_div(ct, 1000);
	}
	if (sec)
		ct += (cputime_t) sec * tb_ticks_per_sec;
	return ct;
}

/*
 * Convert cputime <-> seconds
 */
extern u64 __cputime_sec_factor;

static inline unsigned long cputime_to_secs(const cputime_t ct)
{
	return mulhdu(ct, __cputime_sec_factor);
}

static inline cputime_t secs_to_cputime(const unsigned long sec)
{
	return (cputime_t) sec * tb_ticks_per_sec;
}

/*
 * Convert cputime <-> timespec
 */
static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
{
	u64 x = ct;
	unsigned int frac;

	frac = do_div(x, tb_ticks_per_sec);
	p->tv_sec = x;
	x = (u64) frac * 1000000000;
	do_div(x, tb_ticks_per_sec);
	p->tv_nsec = x;
}

static inline cputime_t timespec_to_cputime(const struct timespec *p)
{
	cputime_t ct;

	ct = (u64) p->tv_nsec * tb_ticks_per_sec;
	do_div(ct, 1000000000);
	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
}

/*
 * Convert cputime <-> timeval
 */
static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
{
	u64 x = ct;
	unsigned int frac;

	frac = do_div(x, tb_ticks_per_sec);
	p->tv_sec = x;
	x = (u64) frac * 1000000;
	do_div(x, tb_ticks_per_sec);
	p->tv_usec = x;
}

static inline cputime_t timeval_to_cputime(const struct timeval *p)
{
	cputime_t ct;

	ct = (u64) p->tv_usec * tb_ticks_per_sec;
	do_div(ct, 1000000);
	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
}

/*
 * Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
 */
extern u64 __cputime_clockt_factor;

static inline unsigned long cputime_to_clock_t(const cputime_t ct)
{
	return mulhdu(ct, __cputime_clockt_factor);
}

static inline cputime_t clock_t_to_cputime(const unsigned long clk)
{
	cputime_t ct;
	unsigned long sec;

	/* have to be a little careful about overflow */
	ct = clk % USER_HZ;
	sec = clk / USER_HZ;
	if (ct) {
		ct *= tb_ticks_per_sec;
		do_div(ct, USER_HZ);
	}
	if (sec)
		ct += (cputime_t) sec * tb_ticks_per_sec;
	return ct;
}

#define cputime64_to_clock_t(ct)	cputime_to_clock_t((cputime_t)(ct))

#endif /* __KERNEL__ */
#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
#endif /* __POWERPC_CPUTIME_H */
Commit	Line	Data
c6622f63 PM	1	/*
	2	* Definitions for measuring cputime on powerpc machines.
	3	*
	4	* Copyright (C) 2006 Paul Mackerras, IBM Corp.
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*
	11	* If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in
	12	* the same units as the timebase. Otherwise we measure cpu time
	13	* in jiffies using the generic definitions.
	14	*/
	15
	16	#ifndef __POWERPC_CPUTIME_H
	17	#define __POWERPC_CPUTIME_H
	18
	19	#ifndef CONFIG_VIRT_CPU_ACCOUNTING
88999ceb	20	#include <asm-generic/cputime.h>
c6622f63 PM	21	#else
	22
	23	#include <linux/types.h>
	24	#include <linux/time.h>
	25	#include <asm/div64.h>
	26	#include <asm/time.h>
	27	#include <asm/param.h>
	28
	29	typedef u64 cputime_t;
	30	typedef u64 cputime64_t;
	31
	32	#define cputime_zero ((cputime_t)0)
	33	#define cputime_max ((~((cputime_t)0) >> 1) - 1)
	34	#define cputime_add(__a, __b) ((__a) + (__b))
	35	#define cputime_sub(__a, __b) ((__a) - (__b))
	36	#define cputime_div(__a, __n) ((__a) / (__n))
	37	#define cputime_halve(__a) ((__a) >> 1)
	38	#define cputime_eq(__a, __b) ((__a) == (__b))
	39	#define cputime_gt(__a, __b) ((__a) > (__b))
	40	#define cputime_ge(__a, __b) ((__a) >= (__b))
	41	#define cputime_lt(__a, __b) ((__a) < (__b))
	42	#define cputime_le(__a, __b) ((__a) <= (__b))
	43
	44	#define cputime64_zero ((cputime64_t)0)
	45	#define cputime64_add(__a, __b) ((__a) + (__b))
a8e0c51c	46	#define cputime64_sub(__a, __b) ((__a) - (__b))
c6622f63 PM	47	#define cputime_to_cputime64(__ct) (__ct)
	48
	49	#ifdef __KERNEL__
	50
	51	/*
	52	* Convert cputime <-> jiffies
	53	*/
	54	extern u64 __cputime_jiffies_factor;
	55
	56	static inline unsigned long cputime_to_jiffies(const cputime_t ct)
	57	{
	58	return mulhdu(ct, __cputime_jiffies_factor);
	59	}
	60
	61	static inline cputime_t jiffies_to_cputime(const unsigned long jif)
	62	{
	63	cputime_t ct;
	64	unsigned long sec;
	65
	66	/* have to be a little careful about overflow */
	67	ct = jif % HZ;
	68	sec = jif / HZ;
	69	if (ct) {
	70	ct *= tb_ticks_per_sec;
	71	do_div(ct, HZ);
	72	}
	73	if (sec)
	74	ct += (cputime_t) sec * tb_ticks_per_sec;
	75	return ct;
	76	}
	77
a8e0c51c DW	78	static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
	79	{
	80	cputime_t ct;
	81	u64 sec;
	82
	83	/* have to be a little careful about overflow */
	84	ct = jif % HZ;
	85	sec = jif / HZ;
	86	if (ct) {
	87	ct *= tb_ticks_per_sec;
	88	do_div(ct, HZ);
	89	}
	90	if (sec)
	91	ct += (cputime_t) sec * tb_ticks_per_sec;
	92	return ct;
	93	}
	94
c6622f63 PM	95	static inline u64 cputime64_to_jiffies64(const cputime_t ct)
	96	{
	97	return mulhdu(ct, __cputime_jiffies_factor);
	98	}
	99
	100	/*
	101	* Convert cputime <-> milliseconds
	102	*/
	103	extern u64 __cputime_msec_factor;
	104
	105	static inline unsigned long cputime_to_msecs(const cputime_t ct)
	106	{
	107	return mulhdu(ct, __cputime_msec_factor);
	108	}
	109
	110	static inline cputime_t msecs_to_cputime(const unsigned long ms)
	111	{
	112	cputime_t ct;
	113	unsigned long sec;
	114
	115	/* have to be a little careful about overflow */
	116	ct = ms % 1000;
	117	sec = ms / 1000;
	118	if (ct) {
	119	ct *= tb_ticks_per_sec;
	120	do_div(ct, 1000);
	121	}
	122	if (sec)
	123	ct += (cputime_t) sec * tb_ticks_per_sec;
	124	return ct;
	125	}
	126
	127	/*
	128	* Convert cputime <-> seconds
	129	*/
	130	extern u64 __cputime_sec_factor;
	131
	132	static inline unsigned long cputime_to_secs(const cputime_t ct)
	133	{
	134	return mulhdu(ct, __cputime_sec_factor);
	135	}
	136
	137	static inline cputime_t secs_to_cputime(const unsigned long sec)
	138	{
	139	return (cputime_t) sec * tb_ticks_per_sec;
	140	}
	141
	142	/*
	143	* Convert cputime <-> timespec
	144	*/
	145	static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
	146	{
	147	u64 x = ct;
	148	unsigned int frac;
	149
	150	frac = do_div(x, tb_ticks_per_sec);
	151	p->tv_sec = x;
	152	x = (u64) frac * 1000000000;
	153	do_div(x, tb_ticks_per_sec);
	154	p->tv_nsec = x;
	155	}
	156
	157	static inline cputime_t timespec_to_cputime(const struct timespec *p)
	158	{
159	cputime_t ct;
160
161	ct = (u64) p->tv_nsec * tb_ticks_per_sec;
162	do_div(ct, 1000000000);
163	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
164	}
165
166	/*
167	* Convert cputime <-> timeval
168	*/
169	static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
170	{
171	u64 x = ct;
172	unsigned int frac;
173
174	frac = do_div(x, tb_ticks_per_sec);
175	p->tv_sec = x;
176	x = (u64) frac * 1000000;
177	do_div(x, tb_ticks_per_sec);
178	p->tv_usec = x;
179	}
180
181	static inline cputime_t timeval_to_cputime(const struct timeval *p)
182	{
183	cputime_t ct;
184
185	ct = (u64) p->tv_usec * tb_ticks_per_sec;
186	do_div(ct, 1000000);
187	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
188	}
189
190	/*
191	* Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
192	*/
193	extern u64 __cputime_clockt_factor;
194
195	static inline unsigned long cputime_to_clock_t(const cputime_t ct)
196	{
197	return mulhdu(ct, __cputime_clockt_factor);
198	}
199
200	static inline cputime_t clock_t_to_cputime(const unsigned long clk)
201	{
202	cputime_t ct;
203	unsigned long sec;
204
205	/* have to be a little careful about overflow */
206	ct = clk % USER_HZ;
207	sec = clk / USER_HZ;
208	if (ct) {
209	ct *= tb_ticks_per_sec;
210	do_div(ct, USER_HZ);
211	}
212	if (sec)
213	ct += (cputime_t) sec * tb_ticks_per_sec;
214	return ct;
215	}
216
217	#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
218
219	#endif /* __KERNEL__ */
220	#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
221	#endif /* __POWERPC_CPUTIME_H */