-/*
- * Definitions for measuring cputime on powerpc machines.
- *
- * Copyright (C) 2006 Paul Mackerras, IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in
- * the same units as the timebase. Otherwise we measure cpu time
- * in jiffies using the generic definitions.
- */
-
-#ifndef __POWERPC_CPUTIME_H
-#define __POWERPC_CPUTIME_H
-
-#ifndef CONFIG_VIRT_CPU_ACCOUNTING
#include <asm-generic/cputime.h>
-#else
-
-#include <linux/types.h>
-#include <linux/time.h>
-#include <asm/div64.h>
-#include <asm/time.h>
-#include <asm/param.h>
-
-typedef u64 cputime_t;
-typedef u64 cputime64_t;
-
-#define cputime_zero ((cputime_t)0)
-#define cputime_max ((~((cputime_t)0) >> 1) - 1)
-#define cputime_add(__a, __b) ((__a) + (__b))
-#define cputime_sub(__a, __b) ((__a) - (__b))
-#define cputime_div(__a, __n) ((__a) / (__n))
-#define cputime_halve(__a) ((__a) >> 1)
-#define cputime_eq(__a, __b) ((__a) == (__b))
-#define cputime_gt(__a, __b) ((__a) > (__b))
-#define cputime_ge(__a, __b) ((__a) >= (__b))
-#define cputime_lt(__a, __b) ((__a) < (__b))
-#define cputime_le(__a, __b) ((__a) <= (__b))
-
-#define cputime64_zero ((cputime64_t)0)
-#define cputime64_add(__a, __b) ((__a) + (__b))
-#define cputime64_sub(__a, __b) ((__a) - (__b))
-#define cputime_to_cputime64(__ct) (__ct)
-
-#ifdef __KERNEL__
-
-/*
- * Convert cputime <-> jiffies
- */
-extern u64 __cputime_jiffies_factor;
-
-static inline unsigned long cputime_to_jiffies(const cputime_t ct)
-{
- return mulhdu(ct, __cputime_jiffies_factor);
-}
-
-static inline cputime_t jiffies_to_cputime(const unsigned long jif)
-{
- cputime_t ct;
- unsigned long sec;
-
- /* have to be a little careful about overflow */
- ct = jif % HZ;
- sec = jif / HZ;
- if (ct) {
- ct *= tb_ticks_per_sec;
- do_div(ct, HZ);
- }
- if (sec)
- ct += (cputime_t) sec * tb_ticks_per_sec;
- return ct;
-}
-
-static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
-{
- cputime_t ct;
- u64 sec;
-
- /* have to be a little careful about overflow */
- ct = jif % HZ;
- sec = jif / HZ;
- if (ct) {
- ct *= tb_ticks_per_sec;
- do_div(ct, HZ);
- }
- if (sec)
- ct += (cputime_t) sec * tb_ticks_per_sec;
- return ct;
-}
-
-static inline u64 cputime64_to_jiffies64(const cputime_t ct)
-{
- return mulhdu(ct, __cputime_jiffies_factor);
-}
-
-/*
- * Convert cputime <-> milliseconds
- */
-extern u64 __cputime_msec_factor;
-
-static inline unsigned long cputime_to_msecs(const cputime_t ct)
-{
- return mulhdu(ct, __cputime_msec_factor);
-}
-
-static inline cputime_t msecs_to_cputime(const unsigned long ms)
-{
- cputime_t ct;
- unsigned long sec;
-
- /* have to be a little careful about overflow */
- ct = ms % 1000;
- sec = ms / 1000;
- if (ct) {
- ct *= tb_ticks_per_sec;
- do_div(ct, 1000);
- }
- if (sec)
- ct += (cputime_t) sec * tb_ticks_per_sec;
- return ct;
-}
-
-/*
- * Convert cputime <-> seconds
- */
-extern u64 __cputime_sec_factor;
-
-static inline unsigned long cputime_to_secs(const cputime_t ct)
-{
- return mulhdu(ct, __cputime_sec_factor);
-}
-
-static inline cputime_t secs_to_cputime(const unsigned long sec)
-{
- return (cputime_t) sec * tb_ticks_per_sec;
-}
-
-/*
- * Convert cputime <-> timespec
- */
-static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
-{
- u64 x = ct;
- unsigned int frac;
-
- frac = do_div(x, tb_ticks_per_sec);
- p->tv_sec = x;
- x = (u64) frac * 1000000000;
- do_div(x, tb_ticks_per_sec);
- p->tv_nsec = x;
-}
-
-static inline cputime_t timespec_to_cputime(const struct timespec *p)
-{
- cputime_t ct;
-
- ct = (u64) p->tv_nsec * tb_ticks_per_sec;
- do_div(ct, 1000000000);
- return ct + (u64) p->tv_sec * tb_ticks_per_sec;
-}
-
-/*
- * Convert cputime <-> timeval
- */
-static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
-{
- u64 x = ct;
- unsigned int frac;
-
- frac = do_div(x, tb_ticks_per_sec);
- p->tv_sec = x;
- x = (u64) frac * 1000000;
- do_div(x, tb_ticks_per_sec);
- p->tv_usec = x;
-}
-
-static inline cputime_t timeval_to_cputime(const struct timeval *p)
-{
- cputime_t ct;
-
- ct = (u64) p->tv_usec * tb_ticks_per_sec;
- do_div(ct, 1000000);
- return ct + (u64) p->tv_sec * tb_ticks_per_sec;
-}
-
-/*
- * Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
- */
-extern u64 __cputime_clockt_factor;
-
-static inline unsigned long cputime_to_clock_t(const cputime_t ct)
-{
- return mulhdu(ct, __cputime_clockt_factor);
-}
-
-static inline cputime_t clock_t_to_cputime(const unsigned long clk)
-{
- cputime_t ct;
- unsigned long sec;
-
- /* have to be a little careful about overflow */
- ct = clk % USER_HZ;
- sec = clk / USER_HZ;
- if (ct) {
- ct *= tb_ticks_per_sec;
- do_div(ct, USER_HZ);
- }
- if (sec)
- ct += (cputime_t) sec * tb_ticks_per_sec;
- return ct;
-}
-
-#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
-
-#endif /* __KERNEL__ */
-#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
-#endif /* __POWERPC_CPUTIME_H */
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