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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/ia64/include/asm/cputime.h
17359 views
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/*

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 * Definitions for measuring cputime on ia64 machines.

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 *

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 * Based on <asm-powerpc/cputime.h>.

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 *

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 * Copyright (C) 2007 FUJITSU LIMITED

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 * Copyright (C) 2007 Hidetoshi Seto <[email protected]>

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 *

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 * This program is free software; you can redistribute it and/or

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 * modify it under the terms of the GNU General Public License

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 * as published by the Free Software Foundation; either version

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 * 2 of the License, or (at your option) any later version.

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 *

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 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in nsec.

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 * Otherwise we measure cpu time in jiffies using the generic definitions.

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 */

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#ifndef __IA64_CPUTIME_H

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#define __IA64_CPUTIME_H

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#ifndef CONFIG_VIRT_CPU_ACCOUNTING

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#include <asm-generic/cputime.h>

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#else

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#include <linux/time.h>

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#include <linux/jiffies.h>

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#include <asm/processor.h>

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typedef u64 cputime_t;

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typedef u64 cputime64_t;

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#define cputime_zero			((cputime_t)0)

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#define cputime_one_jiffy		jiffies_to_cputime(1)

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#define cputime_max			((~((cputime_t)0) >> 1) - 1)

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#define cputime_add(__a, __b)		((__a) +  (__b))

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#define cputime_sub(__a, __b)		((__a) -  (__b))

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#define cputime_div(__a, __n)		((__a) /  (__n))

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#define cputime_halve(__a)		((__a) >> 1)

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#define cputime_eq(__a, __b)		((__a) == (__b))

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#define cputime_gt(__a, __b)		((__a) >  (__b))

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#define cputime_ge(__a, __b)		((__a) >= (__b))

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#define cputime_lt(__a, __b)		((__a) <  (__b))

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#define cputime_le(__a, __b)		((__a) <= (__b))

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#define cputime64_zero			((cputime64_t)0)

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#define cputime64_add(__a, __b)		((__a) + (__b))

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#define cputime64_sub(__a, __b)		((__a) - (__b))

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#define cputime_to_cputime64(__ct)	(__ct)

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/*

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 * Convert cputime <-> jiffies (HZ)

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 */

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#define cputime_to_jiffies(__ct)	((__ct) / (NSEC_PER_SEC / HZ))

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#define jiffies_to_cputime(__jif)	((__jif) * (NSEC_PER_SEC / HZ))

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#define cputime64_to_jiffies64(__ct)	((__ct) / (NSEC_PER_SEC / HZ))

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#define jiffies64_to_cputime64(__jif)	((__jif) * (NSEC_PER_SEC / HZ))

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/*

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 * Convert cputime <-> microseconds

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 */

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#define cputime_to_usecs(__ct)		((__ct) / NSEC_PER_USEC)

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#define usecs_to_cputime(__usecs)	((__usecs) * NSEC_PER_USEC)

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/*

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 * Convert cputime <-> seconds

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 */

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#define cputime_to_secs(__ct)		((__ct) / NSEC_PER_SEC)

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#define secs_to_cputime(__secs)		((__secs) * NSEC_PER_SEC)

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/*

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 * Convert cputime <-> timespec (nsec)

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 */

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static inline cputime_t timespec_to_cputime(const struct timespec *val)

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{

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	cputime_t ret = val->tv_sec * NSEC_PER_SEC;

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	return (ret + val->tv_nsec);

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}

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static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)

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{

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	val->tv_sec  = ct / NSEC_PER_SEC;

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	val->tv_nsec = ct % NSEC_PER_SEC;

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}

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/*

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 * Convert cputime <-> timeval (msec)

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 */

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static inline cputime_t timeval_to_cputime(struct timeval *val)

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{

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	cputime_t ret = val->tv_sec * NSEC_PER_SEC;

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	return (ret + val->tv_usec * NSEC_PER_USEC);

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}

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static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)

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{

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	val->tv_sec = ct / NSEC_PER_SEC;

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	val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;

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}

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/*

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 * Convert cputime <-> clock (USER_HZ)

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 */

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#define cputime_to_clock_t(__ct)	((__ct) / (NSEC_PER_SEC / USER_HZ))

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#define clock_t_to_cputime(__x)		((__x) * (NSEC_PER_SEC / USER_HZ))

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/*

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 * Convert cputime64 to clock.

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 */

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#define cputime64_to_clock_t(__ct)      cputime_to_clock_t((cputime_t)__ct)

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#endif /* CONFIG_VIRT_CPU_ACCOUNTING */

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#endif /* __IA64_CPUTIME_H */

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