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_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))
  44
  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)
  49
  50 /*
  51  * Convert cputime <-> jiffies (HZ)
  52  */
  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))
  57
  58 /*
  59  * Convert cputime <-> microseconds
  60  */
  61 #define cputime_to_usecs(__ct)          ((__ct) / NSEC_PER_USEC)
  62 #define usecs_to_cputime(__usecs)       ((__usecs) * NSEC_PER_USEC)
  63
  64 /*
  65  * Convert cputime <-> seconds
  66  */
  67 #define cputime_to_secs(__ct)           ((__ct) / NSEC_PER_SEC)
  68 #define secs_to_cputime(__secs)         ((__secs) * NSEC_PER_SEC)
  69
  70 /*
  71  * Convert cputime <-> timespec (nsec)
  72  */
  73 static inline cputime_t timespec_to_cputime(const struct timespec *val)
  74 {
  75         cputime_t ret = val->tv_sec * NSEC_PER_SEC;
  76         return (ret + val->tv_nsec);
  77 }
  78 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
  79 {
  80         val->tv_sec  = ct / NSEC_PER_SEC;
  81         val->tv_nsec = ct % NSEC_PER_SEC;
  82 }
  83
  84 /*
  85  * Convert cputime <-> timeval (msec)
  86  */
  87 static inline cputime_t timeval_to_cputime(struct timeval *val)
  88 {
  89         cputime_t ret = val->tv_sec * NSEC_PER_SEC;
  90         return (ret + val->tv_usec * NSEC_PER_USEC);
  91 }
  92 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
  93 {
  94         val->tv_sec = ct / NSEC_PER_SEC;
  95         val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
  96 }
  97
  98 /*
  99  * Convert cputime <-> clock (USER_HZ)
 100  */
 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))
 103
 104 /*
 105  * Convert cputime64 to clock.
 106  */
 107 #define cputime64_to_clock_t(__ct)      cputime_to_clock_t((cputime_t)__ct)
 108
 109 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
 110 #endif /* __IA64_CPUTIME_H */