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Hidetoshi Setob64f34c2008-01-29 14:27:30 +09001/*
Tony Luck7f304912008-08-01 10:13:32 -07002 * Definitions for measuring cputime on ia64 machines.
Hidetoshi Setob64f34c2008-01-29 14:27:30 +09003 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#ifndef __IA64_CPUTIME_H
19#define __IA64_CPUTIME_H
20
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090021#ifndef CONFIG_VIRT_CPU_ACCOUNTING
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm-generic/cputime.h>
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090023#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090025#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)
Stanislaw Gruszkaa42548a2009-07-29 12:15:29 +020033#define cputime_one_jiffy jiffies_to_cputime(1)
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090034#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/*
Michael Holzheud57af9b2010-10-27 15:34:45 -070059 * Convert cputime <-> microseconds
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090060 */
Michael Holzheud57af9b2010-10-27 15:34:45 -070061#define cputime_to_usecs(__ct) ((__ct) / NSEC_PER_USEC)
62#define usecs_to_cputime(__usecs) ((__usecs) * NSEC_PER_USEC)
Hidetoshi Setob64f34c2008-01-29 14:27:30 +090063
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110#endif /* __IA64_CPUTIME_H */