arch/ia64/include/asm/cputime.h

   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
  29 typedef u64 __nocast cputime_t;
  30 typedef u64 __nocast cputime64_t;
  31
  32 #define cputime_one_jiffy               jiffies_to_cputime(1)
  33
  34 /*
  35  * Convert cputime <-> jiffies (HZ)
  36  */
  37 #define cputime_to_jiffies(__ct)        \
  38         ((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
  39 #define jiffies_to_cputime(__jif)       \
  40         (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
  41 #define cputime64_to_jiffies64(__ct)    \
  42         ((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
  43 #define jiffies64_to_cputime64(__jif)   \
  44         (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
  45
  46 /*
  47  * Convert cputime <-> microseconds
  48  */
  49 #define cputime_to_usecs(__ct)          \
  50         ((__force u64)(__ct) / NSEC_PER_USEC)
  51 #define usecs_to_cputime(__usecs)       \
  52         (__force cputime_t)((__usecs) * NSEC_PER_USEC)
  53 #define usecs_to_cputime64(__usecs)     \
  54         (__force cputime64_t)((__usecs) * NSEC_PER_USEC)
  55
  56 /*
  57  * Convert cputime <-> seconds
  58  */
  59 #define cputime_to_secs(__ct)           \
  60         ((__force u64)(__ct) / NSEC_PER_SEC)
  61 #define secs_to_cputime(__secs)         \
  62         (__force cputime_t)((__secs) * NSEC_PER_SEC)
  63
  64 /*
  65  * Convert cputime <-> timespec (nsec)
  66  */
  67 static inline cputime_t timespec_to_cputime(const struct timespec *val)
  68 {
  69         u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
  70         return (__force cputime_t) ret;
  71 }
  72 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
  73 {
  74         val->tv_sec  = (__force u64) ct / NSEC_PER_SEC;
  75         val->tv_nsec = (__force u64) ct % NSEC_PER_SEC;
  76 }
  77
  78 /*
  79  * Convert cputime <-> timeval (msec)
  80  */
  81 static inline cputime_t timeval_to_cputime(struct timeval *val)
  82 {
  83         u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
  84         return (__force cputime_t) ret;
  85 }
  86 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
  87 {
  88         val->tv_sec = (__force u64) ct / NSEC_PER_SEC;
  89         val->tv_usec = ((__force u64) ct % NSEC_PER_SEC) / NSEC_PER_USEC;
  90 }
  91
  92 /*
  93  * Convert cputime <-> clock (USER_HZ)
  94  */
  95 #define cputime_to_clock_t(__ct)        \
  96         ((__force u64)(__ct) / (NSEC_PER_SEC / USER_HZ))
  97 #define clock_t_to_cputime(__x)         \
  98         (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
  99
 100 /*
 101  * Convert cputime64 to clock.
 102  */
 103 #define cputime64_to_clock_t(__ct)      \
 104         cputime_to_clock_t((__force cputime_t)__ct)
 105
 106 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
 107 #endif /* __IA64_CPUTIME_H */