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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> |
c6622f63 PM |
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 | ||
29 | typedef u64 cputime_t; | |
30 | typedef 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 cputime_to_cputime64(__ct) (__ct) | |
47 | ||
48 | #ifdef __KERNEL__ | |
49 | ||
50 | /* | |
51 | * Convert cputime <-> jiffies | |
52 | */ | |
53 | extern u64 __cputime_jiffies_factor; | |
54 | ||
55 | static inline unsigned long cputime_to_jiffies(const cputime_t ct) | |
56 | { | |
57 | return mulhdu(ct, __cputime_jiffies_factor); | |
58 | } | |
59 | ||
60 | static inline cputime_t jiffies_to_cputime(const unsigned long jif) | |
61 | { | |
62 | cputime_t ct; | |
63 | unsigned long sec; | |
64 | ||
65 | /* have to be a little careful about overflow */ | |
66 | ct = jif % HZ; | |
67 | sec = jif / HZ; | |
68 | if (ct) { | |
69 | ct *= tb_ticks_per_sec; | |
70 | do_div(ct, HZ); | |
71 | } | |
72 | if (sec) | |
73 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
74 | return ct; | |
75 | } | |
76 | ||
77 | static inline u64 cputime64_to_jiffies64(const cputime_t ct) | |
78 | { | |
79 | return mulhdu(ct, __cputime_jiffies_factor); | |
80 | } | |
81 | ||
82 | /* | |
83 | * Convert cputime <-> milliseconds | |
84 | */ | |
85 | extern u64 __cputime_msec_factor; | |
86 | ||
87 | static inline unsigned long cputime_to_msecs(const cputime_t ct) | |
88 | { | |
89 | return mulhdu(ct, __cputime_msec_factor); | |
90 | } | |
91 | ||
92 | static inline cputime_t msecs_to_cputime(const unsigned long ms) | |
93 | { | |
94 | cputime_t ct; | |
95 | unsigned long sec; | |
96 | ||
97 | /* have to be a little careful about overflow */ | |
98 | ct = ms % 1000; | |
99 | sec = ms / 1000; | |
100 | if (ct) { | |
101 | ct *= tb_ticks_per_sec; | |
102 | do_div(ct, 1000); | |
103 | } | |
104 | if (sec) | |
105 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
106 | return ct; | |
107 | } | |
108 | ||
109 | /* | |
110 | * Convert cputime <-> seconds | |
111 | */ | |
112 | extern u64 __cputime_sec_factor; | |
113 | ||
114 | static inline unsigned long cputime_to_secs(const cputime_t ct) | |
115 | { | |
116 | return mulhdu(ct, __cputime_sec_factor); | |
117 | } | |
118 | ||
119 | static inline cputime_t secs_to_cputime(const unsigned long sec) | |
120 | { | |
121 | return (cputime_t) sec * tb_ticks_per_sec; | |
122 | } | |
123 | ||
124 | /* | |
125 | * Convert cputime <-> timespec | |
126 | */ | |
127 | static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) | |
128 | { | |
129 | u64 x = ct; | |
130 | unsigned int frac; | |
131 | ||
132 | frac = do_div(x, tb_ticks_per_sec); | |
133 | p->tv_sec = x; | |
134 | x = (u64) frac * 1000000000; | |
135 | do_div(x, tb_ticks_per_sec); | |
136 | p->tv_nsec = x; | |
137 | } | |
138 | ||
139 | static inline cputime_t timespec_to_cputime(const struct timespec *p) | |
140 | { | |
141 | cputime_t ct; | |
142 | ||
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; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Convert cputime <-> timeval | |
150 | */ | |
151 | static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p) | |
152 | { | |
153 | u64 x = ct; | |
154 | unsigned int frac; | |
155 | ||
156 | frac = do_div(x, tb_ticks_per_sec); | |
157 | p->tv_sec = x; | |
158 | x = (u64) frac * 1000000; | |
159 | do_div(x, tb_ticks_per_sec); | |
160 | p->tv_usec = x; | |
161 | } | |
162 | ||
163 | static inline cputime_t timeval_to_cputime(const struct timeval *p) | |
164 | { | |
165 | cputime_t ct; | |
166 | ||
167 | ct = (u64) p->tv_usec * tb_ticks_per_sec; | |
168 | do_div(ct, 1000000); | |
169 | return ct + (u64) p->tv_sec * tb_ticks_per_sec; | |
170 | } | |
171 | ||
172 | /* | |
173 | * Convert cputime <-> clock_t (units of 1/USER_HZ seconds) | |
174 | */ | |
175 | extern u64 __cputime_clockt_factor; | |
176 | ||
177 | static inline unsigned long cputime_to_clock_t(const cputime_t ct) | |
178 | { | |
179 | return mulhdu(ct, __cputime_clockt_factor); | |
180 | } | |
181 | ||
182 | static inline cputime_t clock_t_to_cputime(const unsigned long clk) | |
183 | { | |
184 | cputime_t ct; | |
185 | unsigned long sec; | |
186 | ||
187 | /* have to be a little careful about overflow */ | |
188 | ct = clk % USER_HZ; | |
189 | sec = clk / USER_HZ; | |
190 | if (ct) { | |
191 | ct *= tb_ticks_per_sec; | |
192 | do_div(ct, USER_HZ); | |
193 | } | |
194 | if (sec) | |
195 | ct += (cputime_t) sec * tb_ticks_per_sec; | |
196 | return ct; | |
197 | } | |
198 | ||
199 | #define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct)) | |
200 | ||
201 | #endif /* __KERNEL__ */ | |
202 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING */ | |
203 | #endif /* __POWERPC_CPUTIME_H */ |