[net-next-2.6.git] / arch / powerpc / include / asm / 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>
#ifdef __KERNEL__
static inline void setup_cputime_one_jiffy(void) { }
#endif
#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__

/*
 * One jiffy in timebase units computed during initialization
 */
extern cputime_t cputime_one_jiffy;

/*
 * Convert cputime <-> jiffies
 */
extern u64 __cputime_jiffies_factor;
DECLARE_PER_CPU(unsigned long, cputime_last_delta);
DECLARE_PER_CPU(unsigned long, cputime_scaled_last_delta);

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

/* Estimate the scaled cputime by scaling the real cputime based on
 * the last scaled to real ratio */
static inline cputime_t cputime_to_scaled(const cputime_t ct)
{
	if (cpu_has_feature(CPU_FTR_SPURR) &&
	    per_cpu(cputime_last_delta, smp_processor_id()))
		return ct *
			per_cpu(cputime_scaled_last_delta, smp_processor_id())/
			per_cpu(cputime_last_delta, smp_processor_id());
	return ct;
}

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 void setup_cputime_one_jiffy(void)
{
	cputime_one_jiffy = jiffies_to_cputime(1);
}

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>
a42548a1 SG	21	#ifdef __KERNEL__
	22	static inline void setup_cputime_one_jiffy(void) { }
	23	#endif
c6622f63 PM	24	#else
	25
	26	#include <linux/types.h>
	27	#include <linux/time.h>
	28	#include <asm/div64.h>
	29	#include <asm/time.h>
	30	#include <asm/param.h>
	31
	32	typedef u64 cputime_t;
	33	typedef u64 cputime64_t;
	34
	35	#define cputime_zero ((cputime_t)0)
	36	#define cputime_max ((~((cputime_t)0) >> 1) - 1)
	37	#define cputime_add(__a, __b) ((__a) + (__b))
	38	#define cputime_sub(__a, __b) ((__a) - (__b))
	39	#define cputime_div(__a, __n) ((__a) / (__n))
	40	#define cputime_halve(__a) ((__a) >> 1)
	41	#define cputime_eq(__a, __b) ((__a) == (__b))
	42	#define cputime_gt(__a, __b) ((__a) > (__b))
	43	#define cputime_ge(__a, __b) ((__a) >= (__b))
	44	#define cputime_lt(__a, __b) ((__a) < (__b))
	45	#define cputime_le(__a, __b) ((__a) <= (__b))
	46
	47	#define cputime64_zero ((cputime64_t)0)
	48	#define cputime64_add(__a, __b) ((__a) + (__b))
a8e0c51c	49	#define cputime64_sub(__a, __b) ((__a) - (__b))
c6622f63 PM	50	#define cputime_to_cputime64(__ct) (__ct)
	51
	52	#ifdef __KERNEL__
	53
a42548a1 SG	54	/*
	55	* One jiffy in timebase units computed during initialization
	56	*/
	57	extern cputime_t cputime_one_jiffy;
	58
c6622f63 PM	59	/*
	60	* Convert cputime <-> jiffies
	61	*/
	62	extern u64 __cputime_jiffies_factor;
06b8e878 MN	63	DECLARE_PER_CPU(unsigned long, cputime_last_delta);
06b8e878 MN	64	DECLARE_PER_CPU(unsigned long, cputime_scaled_last_delta);
c6622f63 PM	65
	66	static inline unsigned long cputime_to_jiffies(const cputime_t ct)
	67	{
	68	return mulhdu(ct, __cputime_jiffies_factor);
	69	}
	70
06b8e878 MN	71	/* Estimate the scaled cputime by scaling the real cputime based on
	72	* the last scaled to real ratio */
	73	static inline cputime_t cputime_to_scaled(const cputime_t ct)
	74	{
	75	if (cpu_has_feature(CPU_FTR_SPURR) &&
	76	per_cpu(cputime_last_delta, smp_processor_id()))
	77	return ct *
	78	per_cpu(cputime_scaled_last_delta, smp_processor_id())/
	79	per_cpu(cputime_last_delta, smp_processor_id());
	80	return ct;
	81	}
	82
c6622f63 PM	83	static inline cputime_t jiffies_to_cputime(const unsigned long jif)
	84	{
	85	cputime_t ct;
	86	unsigned long sec;
	87
	88	/* have to be a little careful about overflow */
	89	ct = jif % HZ;
	90	sec = jif / HZ;
	91	if (ct) {
	92	ct *= tb_ticks_per_sec;
	93	do_div(ct, HZ);
	94	}
	95	if (sec)
	96	ct += (cputime_t) sec * tb_ticks_per_sec;
	97	return ct;
	98	}
	99
a42548a1 SG	100	static inline void setup_cputime_one_jiffy(void)
	101	{
	102	cputime_one_jiffy = jiffies_to_cputime(1);
	103	}
	104
a8e0c51c DW	105	static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
	106	{
	107	cputime_t ct;
	108	u64 sec;
	109
	110	/* have to be a little careful about overflow */
	111	ct = jif % HZ;
	112	sec = jif / HZ;
	113	if (ct) {
	114	ct *= tb_ticks_per_sec;
	115	do_div(ct, HZ);
	116	}
	117	if (sec)
	118	ct += (cputime_t) sec * tb_ticks_per_sec;
	119	return ct;
	120	}
	121
c6622f63 PM	122	static inline u64 cputime64_to_jiffies64(const cputime_t ct)
	123	{
	124	return mulhdu(ct, __cputime_jiffies_factor);
	125	}
	126
	127	/*
	128	* Convert cputime <-> milliseconds
	129	*/
	130	extern u64 __cputime_msec_factor;
	131
	132	static inline unsigned long cputime_to_msecs(const cputime_t ct)
	133	{
	134	return mulhdu(ct, __cputime_msec_factor);
	135	}
	136
	137	static inline cputime_t msecs_to_cputime(const unsigned long ms)
	138	{
	139	cputime_t ct;
	140	unsigned long sec;
	141
	142	/* have to be a little careful about overflow */
	143	ct = ms % 1000;
	144	sec = ms / 1000;
	145	if (ct) {
	146	ct *= tb_ticks_per_sec;
	147	do_div(ct, 1000);
	148	}
	149	if (sec)
	150	ct += (cputime_t) sec * tb_ticks_per_sec;
	151	return ct;
	152	}
	153
	154	/*
	155	* Convert cputime <-> seconds
	156	*/
	157	extern u64 __cputime_sec_factor;
	158
	159	static inline unsigned long cputime_to_secs(const cputime_t ct)
	160	{
	161	return mulhdu(ct, __cputime_sec_factor);
	162	}
	163
	164	static inline cputime_t secs_to_cputime(const unsigned long sec)
	165	{
	166	return (cputime_t) sec * tb_ticks_per_sec;
	167	}
	168
	169	/*
	170	* Convert cputime <-> timespec
	171	*/
	172	static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
	173	{
	174	u64 x = ct;
	175	unsigned int frac;
	176
	177	frac = do_div(x, tb_ticks_per_sec);
	178	p->tv_sec = x;
	179	x = (u64) frac * 1000000000;
	180	do_div(x, tb_ticks_per_sec);
	181	p->tv_nsec = x;
	182	}
	183
	184	static inline cputime_t timespec_to_cputime(const struct timespec *p)
	185	{
186	cputime_t ct;
187
188	ct = (u64) p->tv_nsec * tb_ticks_per_sec;
189	do_div(ct, 1000000000);
190	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
191	}
192
193	/*
194	* Convert cputime <-> timeval
195	*/
196	static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
197	{
198	u64 x = ct;
199	unsigned int frac;
200
201	frac = do_div(x, tb_ticks_per_sec);
202	p->tv_sec = x;
203	x = (u64) frac * 1000000;
204	do_div(x, tb_ticks_per_sec);
205	p->tv_usec = x;
206	}
207
208	static inline cputime_t timeval_to_cputime(const struct timeval *p)
209	{
210	cputime_t ct;
211
212	ct = (u64) p->tv_usec * tb_ticks_per_sec;
213	do_div(ct, 1000000);
214	return ct + (u64) p->tv_sec * tb_ticks_per_sec;
215	}
216
217	/*
218	* Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
219	*/
220	extern u64 __cputime_clockt_factor;
221
222	static inline unsigned long cputime_to_clock_t(const cputime_t ct)
223	{
224	return mulhdu(ct, __cputime_clockt_factor);
225	}
226
227	static inline cputime_t clock_t_to_cputime(const unsigned long clk)
228	{
229	cputime_t ct;
230	unsigned long sec;
231
232	/* have to be a little careful about overflow */
233	ct = clk % USER_HZ;
234	sec = clk / USER_HZ;
235	if (ct) {
236	ct *= tb_ticks_per_sec;
237	do_div(ct, USER_HZ);
238	}
239	if (sec)
240	ct += (cputime_t) sec * tb_ticks_per_sec;
241	return ct;
242	}
243
244	#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
245
246	#endif /* __KERNEL__ */
247	#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
248	#endif /* __POWERPC_CPUTIME_H */