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-rw-r--r--include/asm-powerpc/cputime.h235
1 files changed, 0 insertions, 235 deletions
diff --git a/include/asm-powerpc/cputime.h b/include/asm-powerpc/cputime.h
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--- a/include/asm-powerpc/cputime.h
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1/*
2 * Definitions for measuring cputime on powerpc machines.
3 *
4 * Copyright (C) 2006 Paul Mackerras, IBM Corp.
5 *
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.
10 *
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.
14 */
15
16#ifndef __POWERPC_CPUTIME_H
17#define __POWERPC_CPUTIME_H
18
19#ifndef CONFIG_VIRT_CPU_ACCOUNTING
20#include <asm-generic/cputime.h>
21#else
22
23#include <linux/types.h>
24#include <linux/time.h>
25#include <asm/div64.h>
26#include <asm/time.h>
27#include <asm/param.h>
28
29typedef u64 cputime_t;
30typedef 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#ifdef __KERNEL__
50
51/*
52 * Convert cputime <-> jiffies
53 */
54extern u64 __cputime_jiffies_factor;
55DECLARE_PER_CPU(unsigned long, cputime_last_delta);
56DECLARE_PER_CPU(unsigned long, cputime_scaled_last_delta);
57
58static inline unsigned long cputime_to_jiffies(const cputime_t ct)
59{
60 return mulhdu(ct, __cputime_jiffies_factor);
61}
62
63/* Estimate the scaled cputime by scaling the real cputime based on
64 * the last scaled to real ratio */
65static inline cputime_t cputime_to_scaled(const cputime_t ct)
66{
67 if (cpu_has_feature(CPU_FTR_SPURR) &&
68 per_cpu(cputime_last_delta, smp_processor_id()))
69 return ct *
70 per_cpu(cputime_scaled_last_delta, smp_processor_id())/
71 per_cpu(cputime_last_delta, smp_processor_id());
72 return ct;
73}
74
75static inline cputime_t jiffies_to_cputime(const unsigned long jif)
76{
77 cputime_t ct;
78 unsigned long sec;
79
80 /* have to be a little careful about overflow */
81 ct = jif % HZ;
82 sec = jif / HZ;
83 if (ct) {
84 ct *= tb_ticks_per_sec;
85 do_div(ct, HZ);
86 }
87 if (sec)
88 ct += (cputime_t) sec * tb_ticks_per_sec;
89 return ct;
90}
91
92static inline cputime64_t jiffies64_to_cputime64(const u64 jif)
93{
94 cputime_t ct;
95 u64 sec;
96
97 /* have to be a little careful about overflow */
98 ct = jif % HZ;
99 sec = jif / HZ;
100 if (ct) {
101 ct *= tb_ticks_per_sec;
102 do_div(ct, HZ);
103 }
104 if (sec)
105 ct += (cputime_t) sec * tb_ticks_per_sec;
106 return ct;
107}
108
109static inline u64 cputime64_to_jiffies64(const cputime_t ct)
110{
111 return mulhdu(ct, __cputime_jiffies_factor);
112}
113
114/*
115 * Convert cputime <-> milliseconds
116 */
117extern u64 __cputime_msec_factor;
118
119static inline unsigned long cputime_to_msecs(const cputime_t ct)
120{
121 return mulhdu(ct, __cputime_msec_factor);
122}
123
124static inline cputime_t msecs_to_cputime(const unsigned long ms)
125{
126 cputime_t ct;
127 unsigned long sec;
128
129 /* have to be a little careful about overflow */
130 ct = ms % 1000;
131 sec = ms / 1000;
132 if (ct) {
133 ct *= tb_ticks_per_sec;
134 do_div(ct, 1000);
135 }
136 if (sec)
137 ct += (cputime_t) sec * tb_ticks_per_sec;
138 return ct;
139}
140
141/*
142 * Convert cputime <-> seconds
143 */
144extern u64 __cputime_sec_factor;
145
146static inline unsigned long cputime_to_secs(const cputime_t ct)
147{
148 return mulhdu(ct, __cputime_sec_factor);
149}
150
151static inline cputime_t secs_to_cputime(const unsigned long sec)
152{
153 return (cputime_t) sec * tb_ticks_per_sec;
154}
155
156/*
157 * Convert cputime <-> timespec
158 */
159static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
160{
161 u64 x = ct;
162 unsigned int frac;
163
164 frac = do_div(x, tb_ticks_per_sec);
165 p->tv_sec = x;
166 x = (u64) frac * 1000000000;
167 do_div(x, tb_ticks_per_sec);
168 p->tv_nsec = x;
169}
170
171static inline cputime_t timespec_to_cputime(const struct timespec *p)
172{
173 cputime_t ct;
174
175 ct = (u64) p->tv_nsec * tb_ticks_per_sec;
176 do_div(ct, 1000000000);
177 return ct + (u64) p->tv_sec * tb_ticks_per_sec;
178}
179
180/*
181 * Convert cputime <-> timeval
182 */
183static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
184{
185 u64 x = ct;
186 unsigned int frac;
187
188 frac = do_div(x, tb_ticks_per_sec);
189 p->tv_sec = x;
190 x = (u64) frac * 1000000;
191 do_div(x, tb_ticks_per_sec);
192 p->tv_usec = x;
193}
194
195static inline cputime_t timeval_to_cputime(const struct timeval *p)
196{
197 cputime_t ct;
198
199 ct = (u64) p->tv_usec * tb_ticks_per_sec;
200 do_div(ct, 1000000);
201 return ct + (u64) p->tv_sec * tb_ticks_per_sec;
202}
203
204/*
205 * Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
206 */
207extern u64 __cputime_clockt_factor;
208
209static inline unsigned long cputime_to_clock_t(const cputime_t ct)
210{
211 return mulhdu(ct, __cputime_clockt_factor);
212}
213
214static inline cputime_t clock_t_to_cputime(const unsigned long clk)
215{
216 cputime_t ct;
217 unsigned long sec;
218
219 /* have to be a little careful about overflow */
220 ct = clk % USER_HZ;
221 sec = clk / USER_HZ;
222 if (ct) {
223 ct *= tb_ticks_per_sec;
224 do_div(ct, USER_HZ);
225 }
226 if (sec)
227 ct += (cputime_t) sec * tb_ticks_per_sec;
228 return ct;
229}
230
231#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
232
233#endif /* __KERNEL__ */
234#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
235#endif /* __POWERPC_CPUTIME_H */
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