2 * Definitions for measuring cputime on powerpc machines.
4 * Copyright (C) 2006 Paul Mackerras, IBM Corp.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in
12 * the same units as the timebase. Otherwise we measure cpu time
13 * in jiffies using the generic definitions.
16 #ifndef __POWERPC_CPUTIME_H
17 #define __POWERPC_CPUTIME_H
19 #ifndef CONFIG_VIRT_CPU_ACCOUNTING
20 #include <asm-generic/cputime.h>
23 #include <linux/types.h>
24 #include <linux/time.h>
25 #include <asm/div64.h>
27 #include <asm/param.h>
29 typedef u64 cputime_t;
30 typedef u64 cputime64_t;
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))
44 #define cputime64_zero ((cputime64_t)0)
45 #define cputime64_add(__a, __b) ((__a) + (__b))
46 #define cputime_to_cputime64(__ct) (__ct)
51 * Convert cputime <-> jiffies
53 extern u64 __cputime_jiffies_factor;
55 static inline unsigned long cputime_to_jiffies(const cputime_t ct)
57 return mulhdu(ct, __cputime_jiffies_factor);
60 static inline cputime_t jiffies_to_cputime(const unsigned long jif)
65 /* have to be a little careful about overflow */
69 ct *= tb_ticks_per_sec;
73 ct += (cputime_t) sec * tb_ticks_per_sec;
77 static inline u64 cputime64_to_jiffies64(const cputime_t ct)
79 return mulhdu(ct, __cputime_jiffies_factor);
83 * Convert cputime <-> milliseconds
85 extern u64 __cputime_msec_factor;
87 static inline unsigned long cputime_to_msecs(const cputime_t ct)
89 return mulhdu(ct, __cputime_msec_factor);
92 static inline cputime_t msecs_to_cputime(const unsigned long ms)
97 /* have to be a little careful about overflow */
101 ct *= tb_ticks_per_sec;
105 ct += (cputime_t) sec * tb_ticks_per_sec;
110 * Convert cputime <-> seconds
112 extern u64 __cputime_sec_factor;
114 static inline unsigned long cputime_to_secs(const cputime_t ct)
116 return mulhdu(ct, __cputime_sec_factor);
119 static inline cputime_t secs_to_cputime(const unsigned long sec)
121 return (cputime_t) sec * tb_ticks_per_sec;
125 * Convert cputime <-> timespec
127 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
132 frac = do_div(x, tb_ticks_per_sec);
134 x = (u64) frac * 1000000000;
135 do_div(x, tb_ticks_per_sec);
139 static inline cputime_t timespec_to_cputime(const struct timespec *p)
143 ct = (u64) p->tv_nsec * tb_ticks_per_sec;
144 do_div(ct, 1000000000);
145 return ct + (u64) p->tv_sec * tb_ticks_per_sec;
149 * Convert cputime <-> timeval
151 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
156 frac = do_div(x, tb_ticks_per_sec);
158 x = (u64) frac * 1000000;
159 do_div(x, tb_ticks_per_sec);
163 static inline cputime_t timeval_to_cputime(const struct timeval *p)
167 ct = (u64) p->tv_usec * tb_ticks_per_sec;
169 return ct + (u64) p->tv_sec * tb_ticks_per_sec;
173 * Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
175 extern u64 __cputime_clockt_factor;
177 static inline unsigned long cputime_to_clock_t(const cputime_t ct)
179 return mulhdu(ct, __cputime_clockt_factor);
182 static inline cputime_t clock_t_to_cputime(const unsigned long clk)
187 /* have to be a little careful about overflow */
191 ct *= tb_ticks_per_sec;
195 ct += (cputime_t) sec * tb_ticks_per_sec;
199 #define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
201 #endif /* __KERNEL__ */
202 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */
203 #endif /* __POWERPC_CPUTIME_H */