Commit | Line | Data |
---|---|---|
c6622f63 PM |
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 | |
88999ceb | 20 | #include <asm-generic/cputime.h> |
a42548a1 SG |
21 | #ifdef __KERNEL__ |
22 | static inline void setup_cputime_one_jiffy(void) { } | |
23 | #endif | |
c6622f63 PM |
24 | #else |
25 | ||
26 | #include <linux/types.h> | |
27 | #include <linux/time.h> | |
28 | #include <asm/div64.h> | |
29 | #include <asm/time.h> | |
30 | #include <asm/param.h> | |
31 | ||
32 | typedef u64 cputime_t; | |
33 | typedef u64 cputime64_t; | |
34 | ||
35 | #define cputime_zero ((cputime_t)0) | |
36 | #define cputime_max ((~((cputime_t)0) >> 1) - 1) | |
37 | #define cputime_add(__a, __b) ((__a) + (__b)) | |
38 | #define cputime_sub(__a, __b) ((__a) - (__b)) | |
39 | #define cputime_div(__a, __n) ((__a) / (__n)) | |
40 | #define cputime_halve(__a) ((__a) >> 1) | |
41 | #define cputime_eq(__a, __b) ((__a) == (__b)) | |
42 | #define cputime_gt(__a, __b) ((__a) > (__b)) | |
43 | #define cputime_ge(__a, __b) ((__a) >= (__b)) | |
44 | #define cputime_lt(__a, __b) ((__a) < (__b)) | |
45 | #define cputime_le(__a, __b) ((__a) <= (__b)) | |
46 | ||
47 | #define cputime64_zero ((cputime64_t)0) | |
48 | #define cputime64_add(__a, __b) ((__a) + (__b)) | |
a8e0c51c | 49 | #define cputime64_sub(__a, __b) ((__a) - (__b)) |
c6622f63 PM |
50 | #define cputime_to_cputime64(__ct) (__ct) |
51 | ||
52 | #ifdef __KERNEL__ | |
53 | ||
a42548a1 SG |
54 | /* |
55 | * One jiffy in timebase units computed during initialization | |
56 | */ | |
57 | extern cputime_t cputime_one_jiffy; | |
58 | ||
c6622f63 PM |
59 | /* |
60 | * Convert cputime <-> jiffies | |
61 | */ | |
62 | extern u64 __cputime_jiffies_factor; | |
06b8e878 MN |
63 | DECLARE_PER_CPU(unsigned long, cputime_last_delta); |
64 | DECLARE_PER_CPU(unsigned long, cputime_scaled_last_delta); | |
c6622f63 PM |
65 | |
66 | static inline unsigned long cputime_to_jiffies(const cputime_t ct) | |
67 | { | |
68 | return mulhdu(ct, __cputime_jiffies_factor); | |
69 | } | |
70 | ||
06b8e878 MN |
71 | /* Estimate the scaled cputime by scaling the real cputime based on |
72 | * the last scaled to real ratio */ | |
73 | static inline cputime_t cputime_to_scaled(const cputime_t ct) | |
74 | { | |
75 | if (cpu_has_feature(CPU_FTR_SPURR) && | |
61c03ddb AB |
76 | __get_cpu_var(cputime_last_delta)) |
77 | return ct * __get_cpu_var(cputime_scaled_last_delta) / | |
78 | __get_cpu_var(cputime_last_delta); | |
06b8e878 MN |
79 | return ct; |
80 | } | |
81 | ||
c6622f63 PM |
82 | static inline cputime_t jiffies_to_cputime(const unsigned long jif) |
83 | { | |
84 | cputime_t ct; | |
85 | unsigned long sec; | |
86 | ||
87 | /* have to be a little careful about overflow */ | |
88 | ct = jif % HZ; | |
89 | sec = jif / HZ; | |
90 | if (ct) { | |
91 | ct *= tb_ticks_per_sec; | |
92 | do_div(ct, HZ); | |
93 | } | |
94 | if (sec) | |
95 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
96 | return ct; | |
97 | } | |
98 | ||
a42548a1 SG |
99 | static inline void setup_cputime_one_jiffy(void) |
100 | { | |
101 | cputime_one_jiffy = jiffies_to_cputime(1); | |
102 | } | |
103 | ||
a8e0c51c DW |
104 | static inline cputime64_t jiffies64_to_cputime64(const u64 jif) |
105 | { | |
106 | cputime_t ct; | |
107 | u64 sec; | |
108 | ||
109 | /* have to be a little careful about overflow */ | |
110 | ct = jif % HZ; | |
111 | sec = jif / HZ; | |
112 | if (ct) { | |
113 | ct *= tb_ticks_per_sec; | |
114 | do_div(ct, HZ); | |
115 | } | |
116 | if (sec) | |
117 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
118 | return ct; | |
119 | } | |
120 | ||
c6622f63 PM |
121 | static inline u64 cputime64_to_jiffies64(const cputime_t ct) |
122 | { | |
123 | return mulhdu(ct, __cputime_jiffies_factor); | |
124 | } | |
125 | ||
126 | /* | |
d57af9b2 | 127 | * Convert cputime <-> microseconds |
c6622f63 PM |
128 | */ |
129 | extern u64 __cputime_msec_factor; | |
130 | ||
d57af9b2 | 131 | static inline unsigned long cputime_to_usecs(const cputime_t ct) |
c6622f63 | 132 | { |
d57af9b2 | 133 | return mulhdu(ct, __cputime_msec_factor) * USEC_PER_MSEC; |
c6622f63 PM |
134 | } |
135 | ||
d57af9b2 | 136 | static inline cputime_t usecs_to_cputime(const unsigned long us) |
c6622f63 PM |
137 | { |
138 | cputime_t ct; | |
139 | unsigned long sec; | |
140 | ||
141 | /* have to be a little careful about overflow */ | |
d57af9b2 MH |
142 | ct = us % 1000000; |
143 | sec = us / 1000000; | |
c6622f63 PM |
144 | if (ct) { |
145 | ct *= tb_ticks_per_sec; | |
146 | do_div(ct, 1000); | |
147 | } | |
148 | if (sec) | |
149 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
150 | return ct; | |
151 | } | |
152 | ||
153 | /* | |
154 | * Convert cputime <-> seconds | |
155 | */ | |
156 | extern u64 __cputime_sec_factor; | |
157 | ||
158 | static inline unsigned long cputime_to_secs(const cputime_t ct) | |
159 | { | |
160 | return mulhdu(ct, __cputime_sec_factor); | |
161 | } | |
162 | ||
163 | static inline cputime_t secs_to_cputime(const unsigned long sec) | |
164 | { | |
165 | return (cputime_t) sec * tb_ticks_per_sec; | |
166 | } | |
167 | ||
168 | /* | |
169 | * Convert cputime <-> timespec | |
170 | */ | |
171 | static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) | |
172 | { | |
173 | u64 x = ct; | |
174 | unsigned int frac; | |
175 | ||
176 | frac = do_div(x, tb_ticks_per_sec); | |
177 | p->tv_sec = x; | |
178 | x = (u64) frac * 1000000000; | |
179 | do_div(x, tb_ticks_per_sec); | |
180 | p->tv_nsec = x; | |
181 | } | |
182 | ||
183 | static inline cputime_t timespec_to_cputime(const struct timespec *p) | |
184 | { | |
185 | cputime_t ct; | |
186 | ||
187 | ct = (u64) p->tv_nsec * tb_ticks_per_sec; | |
188 | do_div(ct, 1000000000); | |
189 | return ct + (u64) p->tv_sec * tb_ticks_per_sec; | |
190 | } | |
191 | ||
192 | /* | |
193 | * Convert cputime <-> timeval | |
194 | */ | |
195 | static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p) | |
196 | { | |
197 | u64 x = ct; | |
198 | unsigned int frac; | |
199 | ||
200 | frac = do_div(x, tb_ticks_per_sec); | |
201 | p->tv_sec = x; | |
202 | x = (u64) frac * 1000000; | |
203 | do_div(x, tb_ticks_per_sec); | |
204 | p->tv_usec = x; | |
205 | } | |
206 | ||
207 | static inline cputime_t timeval_to_cputime(const struct timeval *p) | |
208 | { | |
209 | cputime_t ct; | |
210 | ||
211 | ct = (u64) p->tv_usec * tb_ticks_per_sec; | |
212 | do_div(ct, 1000000); | |
213 | return ct + (u64) p->tv_sec * tb_ticks_per_sec; | |
214 | } | |
215 | ||
216 | /* | |
217 | * Convert cputime <-> clock_t (units of 1/USER_HZ seconds) | |
218 | */ | |
219 | extern u64 __cputime_clockt_factor; | |
220 | ||
221 | static inline unsigned long cputime_to_clock_t(const cputime_t ct) | |
222 | { | |
223 | return mulhdu(ct, __cputime_clockt_factor); | |
224 | } | |
225 | ||
226 | static inline cputime_t clock_t_to_cputime(const unsigned long clk) | |
227 | { | |
228 | cputime_t ct; | |
229 | unsigned long sec; | |
230 | ||
231 | /* have to be a little careful about overflow */ | |
232 | ct = clk % USER_HZ; | |
233 | sec = clk / USER_HZ; | |
234 | if (ct) { | |
235 | ct *= tb_ticks_per_sec; | |
236 | do_div(ct, USER_HZ); | |
237 | } | |
238 | if (sec) | |
239 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
240 | return ct; | |
241 | } | |
242 | ||
243 | #define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct)) | |
244 | ||
245 | #endif /* __KERNEL__ */ | |
246 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING */ | |
247 | #endif /* __POWERPC_CPUTIME_H */ |