2 * Definitions for measuring cputime on ia64 machines.
4 * Based on <asm-powerpc/cputime.h>.
6 * Copyright (C) 2007 FUJITSU LIMITED
7 * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
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.
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.
18 #ifndef __IA64_CPUTIME_H
19 #define __IA64_CPUTIME_H
21 #ifndef CONFIG_VIRT_CPU_ACCOUNTING
22 #include <asm-generic/cputime.h>
25 #include <linux/time.h>
26 #include <linux/jiffies.h>
27 #include <asm/processor.h>
29 typedef u64 cputime_t
;
30 typedef u64 cputime64_t
;
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))
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)
51 * Convert cputime <-> jiffies (HZ)
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))
59 * Convert cputime <-> milliseconds
61 #define cputime_to_msecs(__ct) ((__ct) / NSEC_PER_MSEC)
62 #define msecs_to_cputime(__msecs) ((__msecs) * NSEC_PER_MSEC)
65 * Convert cputime <-> seconds
67 #define cputime_to_secs(__ct) ((__ct) / NSEC_PER_SEC)
68 #define secs_to_cputime(__secs) ((__secs) * NSEC_PER_SEC)
71 * Convert cputime <-> timespec (nsec)
73 static inline cputime_t
timespec_to_cputime(const struct timespec
*val
)
75 cputime_t ret
= val
->tv_sec
* NSEC_PER_SEC
;
76 return (ret
+ val
->tv_nsec
);
78 static inline void cputime_to_timespec(const cputime_t ct
, struct timespec
*val
)
80 val
->tv_sec
= ct
/ NSEC_PER_SEC
;
81 val
->tv_nsec
= ct
% NSEC_PER_SEC
;
85 * Convert cputime <-> timeval (msec)
87 static inline cputime_t
timeval_to_cputime(struct timeval
*val
)
89 cputime_t ret
= val
->tv_sec
* NSEC_PER_SEC
;
90 return (ret
+ val
->tv_usec
* NSEC_PER_USEC
);
92 static inline void cputime_to_timeval(const cputime_t ct
, struct timeval
*val
)
94 val
->tv_sec
= ct
/ NSEC_PER_SEC
;
95 val
->tv_usec
= (ct
% NSEC_PER_SEC
) / NSEC_PER_USEC
;
99 * Convert cputime <-> clock (USER_HZ)
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))
105 * Convert cputime64 to clock.
107 #define cputime64_to_clock_t(__ct) cputime_to_clock_t((cputime_t)__ct)
109 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
110 #endif /* __IA64_CPUTIME_H */