2 * include/asm-ia64/cputime.h:
3 * Definitions for measuring cputime on ia64 machines.
5 * Based on <asm-powerpc/cputime.h>.
7 * Copyright (C) 2007 FUJITSU LIMITED
8 * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
15 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in nsec.
16 * Otherwise we measure cpu time in jiffies using the generic definitions.
19 #ifndef __IA64_CPUTIME_H
20 #define __IA64_CPUTIME_H
22 #ifndef CONFIG_VIRT_CPU_ACCOUNTING
23 #include <asm-generic/cputime.h>
26 #include <linux/time.h>
27 #include <linux/jiffies.h>
28 #include <asm/processor.h>
30 typedef u64 cputime_t;
31 typedef u64 cputime64_t;
33 #define cputime_zero ((cputime_t)0)
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 */