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Linux kernel mirror (for testing)
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linux
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_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))
46#define cputime64_sub(__a, __b) ((__a) - (__b))
47#define cputime_to_cputime64(__ct) (__ct)
48
49/*
50 * Convert cputime <-> jiffies (HZ)
51 */
52#define cputime_to_jiffies(__ct) ((__ct) / (NSEC_PER_SEC / HZ))
53#define jiffies_to_cputime(__jif) ((__jif) * (NSEC_PER_SEC / HZ))
54#define cputime64_to_jiffies64(__ct) ((__ct) / (NSEC_PER_SEC / HZ))
55#define jiffies64_to_cputime64(__jif) ((__jif) * (NSEC_PER_SEC / HZ))
56
57/*
58 * Convert cputime <-> milliseconds
59 */
60#define cputime_to_msecs(__ct) ((__ct) / NSEC_PER_MSEC)
61#define msecs_to_cputime(__msecs) ((__msecs) * NSEC_PER_MSEC)
62
63/*
64 * Convert cputime <-> seconds
65 */
66#define cputime_to_secs(__ct) ((__ct) / NSEC_PER_SEC)
67#define secs_to_cputime(__secs) ((__secs) * NSEC_PER_SEC)
68
69/*
70 * Convert cputime <-> timespec (nsec)
71 */
72static inline cputime_t timespec_to_cputime(const struct timespec *val)
73{
74 cputime_t ret = val->tv_sec * NSEC_PER_SEC;
75 return (ret + val->tv_nsec);
76}
77static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
78{
79 val->tv_sec = ct / NSEC_PER_SEC;
80 val->tv_nsec = ct % NSEC_PER_SEC;
81}
82
83/*
84 * Convert cputime <-> timeval (msec)
85 */
86static inline cputime_t timeval_to_cputime(struct timeval *val)
87{
88 cputime_t ret = val->tv_sec * NSEC_PER_SEC;
89 return (ret + val->tv_usec * NSEC_PER_USEC);
90}
91static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
92{
93 val->tv_sec = ct / NSEC_PER_SEC;
94 val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
95}
96
97/*
98 * Convert cputime <-> clock (USER_HZ)
99 */
100#define cputime_to_clock_t(__ct) ((__ct) / (NSEC_PER_SEC / USER_HZ))
101#define clock_t_to_cputime(__x) ((__x) * (NSEC_PER_SEC / USER_HZ))
102
103/*
104 * Convert cputime64 to clock.
105 */
106#define cputime64_to_clock_t(__ct) cputime_to_clock_t((cputime_t)__ct)
107
108#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
109#endif /* __IA64_CPUTIME_H */