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 __nocast cputime_t;
 30typedef u64 __nocast cputime64_t;
 31
 32#define cputime_one_jiffy		jiffies_to_cputime(1)
 33
 34/*
 35 * Convert cputime <-> jiffies (HZ)
 36 */
 37#define cputime_to_jiffies(__ct)	\
 38	((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
 39#define jiffies_to_cputime(__jif)	\
 40	(__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
 41#define cputime64_to_jiffies64(__ct)	\
 42	((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
 43#define jiffies64_to_cputime64(__jif)	\
 44	(__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
 45
 46/*
 47 * Convert cputime <-> microseconds
 48 */
 49#define cputime_to_usecs(__ct)		\
 50	((__force u64)(__ct) / NSEC_PER_USEC)
 51#define usecs_to_cputime(__usecs)	\
 52	(__force cputime_t)((__usecs) * NSEC_PER_USEC)
 53#define usecs_to_cputime64(__usecs)	\
 54	(__force cputime64_t)((__usecs) * NSEC_PER_USEC)
 55
 56/*
 57 * Convert cputime <-> seconds
 58 */
 59#define cputime_to_secs(__ct)		\
 60	((__force u64)(__ct) / NSEC_PER_SEC)
 61#define secs_to_cputime(__secs)		\
 62	(__force cputime_t)((__secs) * NSEC_PER_SEC)
 63
 64/*
 65 * Convert cputime <-> timespec (nsec)
 66 */
 67static inline cputime_t timespec_to_cputime(const struct timespec *val)
 68{
 69	u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
 70	return (__force cputime_t) ret;
 71}
 72static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
 73{
 74	val->tv_sec  = (__force u64) ct / NSEC_PER_SEC;
 75	val->tv_nsec = (__force u64) ct % NSEC_PER_SEC;
 76}
 77
 78/*
 79 * Convert cputime <-> timeval (msec)
 80 */
 81static inline cputime_t timeval_to_cputime(struct timeval *val)
 82{
 83	u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
 84	return (__force cputime_t) ret;
 85}
 86static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
 87{
 88	val->tv_sec = (__force u64) ct / NSEC_PER_SEC;
 89	val->tv_usec = ((__force u64) ct % NSEC_PER_SEC) / NSEC_PER_USEC;
 90}
 91
 92/*
 93 * Convert cputime <-> clock (USER_HZ)
 94 */
 95#define cputime_to_clock_t(__ct)	\
 96	((__force u64)(__ct) / (NSEC_PER_SEC / USER_HZ))
 97#define clock_t_to_cputime(__x)		\
 98	(__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
 99
100/*
101 * Convert cputime64 to clock.
102 */
103#define cputime64_to_clock_t(__ct)	\
104	cputime_to_clock_t((__force cputime_t)__ct)
105
106#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
107#endif /* __IA64_CPUTIME_H */