LXR linux/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
  29typedef u64 cputime_t;
  30typedef 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 <-> milliseconds
  60 */
  61#define cputime_to_msecs(__ct)          ((__ct) / NSEC_PER_MSEC)
  62#define msecs_to_cputime(__msecs)       ((__msecs) * NSEC_PER_MSEC)
  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 */
  73static 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}
  78static 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 */
  87static 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}
  92static 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 */
 111