1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Definitions for measuring cputime on ia64 machines.
 4 *
 5 * Based on <asm-powerpc/cputime.h>.
 6 *
 7 * Copyright (C) 2007 FUJITSU LIMITED
 8 * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
 9 *
10 * If we have CONFIG_VIRT_CPU_ACCOUNTING_NATIVE, we measure cpu time in nsec.
 
 
 
 
 
11 * Otherwise we measure cpu time in jiffies using the generic definitions.
12 */
13
14#ifndef __IA64_CPUTIME_H
15#define __IA64_CPUTIME_H
16
17#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
18extern void arch_vtime_task_switch(struct task_struct *tsk);
19#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
20
 
21#endif /* __IA64_CPUTIME_H */

 
  1/*
  2 * Definitions for measuring cputime on ia64 machines.
  3 *
  4 * Based on <asm-powerpc/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 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in nsec.
 15 * Otherwise we measure cpu time in jiffies using the generic definitions.
 16 */
 17
 18#ifndef __IA64_CPUTIME_H
 19#define __IA64_CPUTIME_H
 20
 21#ifndef CONFIG_VIRT_CPU_ACCOUNTING
 22#include <asm-generic/cputime.h>
 23#else
 24
 25#include <linux/time.h>
 26#include <linux/jiffies.h>
 27#include <asm/processor.h>
 28
 29typedef u64 cputime_t;
 30typedef u64 cputime64_t;
 31
 32#define cputime_zero			((cputime_t)0)
 33#define cputime_one_jiffy		jiffies_to_cputime(1)
 34#define cputime_max			((~((cputime_t)0) >> 1) - 1)
 35#define cputime_add(__a, __b)		((__a) +  (__b))
 36#define cputime_sub(__a, __b)		((__a) -  (__b))
 37#define cputime_div(__a, __n)		((__a) /  (__n))
 38#define cputime_halve(__a)		((__a) >> 1)
 39#define cputime_eq(__a, __b)		((__a) == (__b))
 40#define cputime_gt(__a, __b)		((__a) >  (__b))
 41#define cputime_ge(__a, __b)		((__a) >= (__b))
 42#define cputime_lt(__a, __b)		((__a) <  (__b))
 43#define cputime_le(__a, __b)		((__a) <= (__b))
 44
 45#define cputime64_zero			((cputime64_t)0)
 46#define cputime64_add(__a, __b)		((__a) + (__b))
 47#define cputime64_sub(__a, __b)		((__a) - (__b))
 48#define cputime_to_cputime64(__ct)	(__ct)
 49
 50/*
 51 * Convert cputime <-> jiffies (HZ)
 52 */
 53#define cputime_to_jiffies(__ct)	((__ct) / (NSEC_PER_SEC / HZ))
 54#define jiffies_to_cputime(__jif)	((__jif) * (NSEC_PER_SEC / HZ))
 55#define cputime64_to_jiffies64(__ct)	((__ct) / (NSEC_PER_SEC / HZ))
 56#define jiffies64_to_cputime64(__jif)	((__jif) * (NSEC_PER_SEC / HZ))
 57
 58/*
 59 * Convert cputime <-> microseconds
 60 */
 61#define cputime_to_usecs(__ct)		((__ct) / NSEC_PER_USEC)
 62#define usecs_to_cputime(__usecs)	((__usecs) * NSEC_PER_USEC)
 63
 64/*
 65 * Convert cputime <-> seconds
 66 */
 67#define cputime_to_secs(__ct)		((__ct) / NSEC_PER_SEC)
 68#define secs_to_cputime(__secs)		((__secs) * NSEC_PER_SEC)
 69
 70/*
 71 * Convert cputime <-> timespec (nsec)
 72 */
 73static inline cputime_t timespec_to_cputime(const struct timespec *val)
 74{
 75	cputime_t ret = val->tv_sec * NSEC_PER_SEC;
 76	return (ret + val->tv_nsec);
 77}
 78static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
 79{
 80	val->tv_sec  = ct / NSEC_PER_SEC;
 81	val->tv_nsec = ct % NSEC_PER_SEC;
 82}
 83
 84/*
 85 * Convert cputime <-> timeval (msec)
 86 */
 87static inline cputime_t timeval_to_cputime(struct timeval *val)
 88{
 89	cputime_t ret = val->tv_sec * NSEC_PER_SEC;
 90	return (ret + val->tv_usec * NSEC_PER_USEC);
 91}
 92static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
 93{
 94	val->tv_sec = ct / NSEC_PER_SEC;
 95	val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
 96}
 97
 98/*
 99 * Convert cputime <-> clock (USER_HZ)
100 */
101#define cputime_to_clock_t(__ct)	((__ct) / (NSEC_PER_SEC / USER_HZ))
102#define clock_t_to_cputime(__x)		((__x) * (NSEC_PER_SEC / USER_HZ))
103
104/*
105 * Convert cputime64 to clock.
106 */
107#define cputime64_to_clock_t(__ct)      cputime_to_clock_t((cputime_t)__ct)
108
109#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
110#endif /* __IA64_CPUTIME_H */