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 cputime_t;
  30 typedef u64 cputime64_t;
  31
  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))
  43
  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)
  48
  49 /*
  50  * Convert cputime <-> jiffies (HZ)
  51  */
  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))
  56
  57 /*
  58  * Convert cputime <-> milliseconds
  59  */
  60 #define cputime_to_msecs(__ct)          ((__ct) / NSEC_PER_MSEC)
  61 #define msecs_to_cputime(__msecs)       ((__msecs) * NSEC_PER_MSEC)
  62
  63 /*
  64  * Convert cputime <-> seconds
  65  */
  66 #define cputime_to_secs(__ct)           ((__ct) / NSEC_PER_SEC)
  67 #define secs_to_cputime(__secs)         ((__secs) * NSEC_PER_SEC)
  68
  69 /*
  70  * Convert cputime <-> timespec (nsec)
  71  */
  72 static inline cputime_t timespec_to_cputime(const struct timespec *val)
  73 {
  74         cputime_t ret = val->tv_sec * NSEC_PER_SEC;
  75         return (ret + val->tv_nsec);
  76 }
  77 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
  78 {
  79         val->tv_sec  = ct / NSEC_PER_SEC;
  80         val->tv_nsec = ct % NSEC_PER_SEC;
  81 }
  82
  83 /*
  84  * Convert cputime <-> timeval (msec)
  85  */
  86 static inline cputime_t timeval_to_cputime(struct timeval *val)
  87 {
  88         cputime_t ret = val->tv_sec * NSEC_PER_SEC;
  89         return (ret + val->tv_usec * NSEC_PER_USEC);
  90 }
  91 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
  92 {
  93         val->tv_sec = ct / NSEC_PER_SEC;
  94         val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
  95 }
  96
  97 /*
  98  * Convert cputime <-> clock (USER_HZ)
  99  */
 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))
 102
 103 /*
 104  * Convert cputime64 to clock.
 105  */
 106 #define cputime64_to_clock_t(__ct)      cputime_to_clock_t((cputime_t)__ct)
 107
 108 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
 109 #endif /* __IA64_CPUTIME_H */