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_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))
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)
50 * Convert cputime <-> jiffies (HZ)
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))
58 * Convert cputime <-> milliseconds
60 #define cputime_to_msecs(__ct) ((__ct) / NSEC_PER_MSEC)
61 #define msecs_to_cputime(__msecs) ((__msecs) * NSEC_PER_MSEC)
64 * Convert cputime <-> seconds
66 #define cputime_to_secs(__ct) ((__ct) / NSEC_PER_SEC)
67 #define secs_to_cputime(__secs) ((__secs) * NSEC_PER_SEC)
70 * Convert cputime <-> timespec (nsec)
72 static inline cputime_t timespec_to_cputime(const struct timespec *val)
74 cputime_t ret = val->tv_sec * NSEC_PER_SEC;
75 return (ret + val->tv_nsec);
77 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
79 val->tv_sec = ct / NSEC_PER_SEC;
80 val->tv_nsec = ct % NSEC_PER_SEC;
84 * Convert cputime <-> timeval (msec)
86 static inline cputime_t timeval_to_cputime(struct timeval *val)
88 cputime_t ret = val->tv_sec * NSEC_PER_SEC;
89 return (ret + val->tv_usec * NSEC_PER_USEC);
91 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
93 val->tv_sec = ct / NSEC_PER_SEC;
94 val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
98 * Convert cputime <-> clock (USER_HZ)
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))
104 * Convert cputime64 to clock.
106 #define cputime64_to_clock_t(__ct) cputime_to_clock_t((cputime_t)__ct)
108 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
109 #endif /* __IA64_CPUTIME_H */