Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
bb176f7d | 2 | * linux/include/linux/cpufreq.h |
1da177e4 | 3 | * |
bb176f7d VK |
4 | * Copyright (C) 2001 Russell King |
5 | * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> | |
335dc333 | 6 | * |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #ifndef _LINUX_CPUFREQ_H | |
12 | #define _LINUX_CPUFREQ_H | |
13 | ||
5ff0a268 VK |
14 | #include <linux/cpumask.h> |
15 | #include <linux/completion.h> | |
1da177e4 | 16 | #include <linux/kobject.h> |
5ff0a268 | 17 | #include <linux/notifier.h> |
1da177e4 | 18 | #include <linux/sysfs.h> |
1da177e4 | 19 | |
1da177e4 | 20 | /********************************************************************* |
74aca95d | 21 | * CPUFREQ INTERFACE * |
1da177e4 | 22 | *********************************************************************/ |
74aca95d VK |
23 | /* |
24 | * Frequency values here are CPU kHz | |
25 | * | |
b53cc6ea | 26 | * Maximum transition latency is in nanoseconds - if it's unknown, |
1da177e4 LT |
27 | * CPUFREQ_ETERNAL shall be used. |
28 | */ | |
29 | ||
74aca95d VK |
30 | #define CPUFREQ_ETERNAL (-1) |
31 | #define CPUFREQ_NAME_LEN 16 | |
32 | /* Print length for names. Extra 1 space for accomodating '\n' in prints */ | |
33 | #define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1) | |
34 | ||
1da177e4 LT |
35 | struct cpufreq_governor; |
36 | ||
74aca95d VK |
37 | struct cpufreq_freqs { |
38 | unsigned int cpu; /* cpu nr */ | |
39 | unsigned int old; | |
40 | unsigned int new; | |
41 | u8 flags; /* flags of cpufreq_driver, see below. */ | |
42 | }; | |
8aa84ad8 | 43 | |
1da177e4 LT |
44 | struct cpufreq_cpuinfo { |
45 | unsigned int max_freq; | |
46 | unsigned int min_freq; | |
335dc333 TF |
47 | |
48 | /* in 10^(-9) s = nanoseconds */ | |
49 | unsigned int transition_latency; | |
1da177e4 LT |
50 | }; |
51 | ||
52 | struct cpufreq_real_policy { | |
53 | unsigned int min; /* in kHz */ | |
54 | unsigned int max; /* in kHz */ | |
335dc333 | 55 | unsigned int policy; /* see above */ |
1da177e4 LT |
56 | struct cpufreq_governor *governor; /* see below */ |
57 | }; | |
58 | ||
59 | struct cpufreq_policy { | |
951fc5f4 VK |
60 | /* CPUs sharing clock, require sw coordination */ |
61 | cpumask_var_t cpus; /* Online CPUs only */ | |
62 | cpumask_var_t related_cpus; /* Online + Offline CPUs */ | |
63 | ||
62b36cc1 | 64 | unsigned int shared_type; /* ACPI: ANY or ALL affected CPUs |
3b2d9942 | 65 | should set cpufreq */ |
b8eed8af VK |
66 | unsigned int cpu; /* cpu nr of CPU managing this policy */ |
67 | unsigned int last_cpu; /* cpu nr of previous CPU that managed | |
68 | * this policy */ | |
1da177e4 LT |
69 | struct cpufreq_cpuinfo cpuinfo;/* see above */ |
70 | ||
71 | unsigned int min; /* in kHz */ | |
72 | unsigned int max; /* in kHz */ | |
73 | unsigned int cur; /* in kHz, only needed if cpufreq | |
74 | * governors are used */ | |
335dc333 | 75 | unsigned int policy; /* see above */ |
1da177e4 | 76 | struct cpufreq_governor *governor; /* see below */ |
7bd353a9 | 77 | void *governor_data; |
95731ebb | 78 | bool governor_enabled; /* governor start/stop flag */ |
1da177e4 | 79 | |
1da177e4 LT |
80 | struct work_struct update; /* if update_policy() needs to be |
81 | * called, but you're in IRQ context */ | |
82 | ||
83 | struct cpufreq_real_policy user_policy; | |
84 | ||
c88a1f8b | 85 | struct list_head policy_list; |
1da177e4 LT |
86 | struct kobject kobj; |
87 | struct completion kobj_unregister; | |
ad7722da | 88 | |
89 | /* | |
90 | * The rules for this semaphore: | |
91 | * - Any routine that wants to read from the policy structure will | |
92 | * do a down_read on this semaphore. | |
93 | * - Any routine that will write to the policy structure and/or may take away | |
94 | * the policy altogether (eg. CPU hotplug), will hold this lock in write | |
95 | * mode before doing so. | |
96 | * | |
97 | * Additional rules: | |
98 | * - Lock should not be held across | |
99 | * __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT); | |
100 | */ | |
101 | struct rw_semaphore rwsem; | |
1da177e4 LT |
102 | }; |
103 | ||
62b36cc1 | 104 | /* Only for ACPI */ |
46f18e3a VP |
105 | #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ |
106 | #define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ | |
107 | #define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ | |
108 | #define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/ | |
1da177e4 | 109 | |
c75b505d | 110 | #ifdef CONFIG_CPU_FREQ |
74aca95d | 111 | struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); |
3a3e9e06 | 112 | void cpufreq_cpu_put(struct cpufreq_policy *policy); |
c75b505d DV |
113 | #else |
114 | static inline struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) | |
115 | { | |
116 | return NULL; | |
117 | } | |
118 | static inline void cpufreq_cpu_put(struct cpufreq_policy *policy) { } | |
119 | #endif | |
74aca95d | 120 | |
2624f90c FB |
121 | static inline bool policy_is_shared(struct cpufreq_policy *policy) |
122 | { | |
123 | return cpumask_weight(policy->cpus) > 1; | |
124 | } | |
125 | ||
74aca95d VK |
126 | /* /sys/devices/system/cpu/cpufreq: entry point for global variables */ |
127 | extern struct kobject *cpufreq_global_kobject; | |
128 | int cpufreq_get_global_kobject(void); | |
129 | void cpufreq_put_global_kobject(void); | |
130 | int cpufreq_sysfs_create_file(const struct attribute *attr); | |
131 | void cpufreq_sysfs_remove_file(const struct attribute *attr); | |
1da177e4 | 132 | |
74aca95d VK |
133 | #ifdef CONFIG_CPU_FREQ |
134 | unsigned int cpufreq_get(unsigned int cpu); | |
135 | unsigned int cpufreq_quick_get(unsigned int cpu); | |
136 | unsigned int cpufreq_quick_get_max(unsigned int cpu); | |
137 | void disable_cpufreq(void); | |
1da177e4 | 138 | |
74aca95d VK |
139 | u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy); |
140 | int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu); | |
141 | int cpufreq_update_policy(unsigned int cpu); | |
142 | bool have_governor_per_policy(void); | |
143 | struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); | |
144 | #else | |
145 | static inline unsigned int cpufreq_get(unsigned int cpu) | |
1da177e4 | 146 | { |
74aca95d VK |
147 | return 0; |
148 | } | |
149 | static inline unsigned int cpufreq_quick_get(unsigned int cpu) | |
150 | { | |
151 | return 0; | |
152 | } | |
153 | static inline unsigned int cpufreq_quick_get_max(unsigned int cpu) | |
154 | { | |
155 | return 0; | |
156 | } | |
157 | static inline void disable_cpufreq(void) { } | |
1da177e4 | 158 | #endif |
1da177e4 LT |
159 | |
160 | /********************************************************************* | |
74aca95d | 161 | * CPUFREQ DRIVER INTERFACE * |
1da177e4 LT |
162 | *********************************************************************/ |
163 | ||
74aca95d VK |
164 | #define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */ |
165 | #define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */ | |
1da177e4 | 166 | |
74aca95d VK |
167 | struct freq_attr { |
168 | struct attribute attr; | |
169 | ssize_t (*show)(struct cpufreq_policy *, char *); | |
170 | ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count); | |
1da177e4 LT |
171 | }; |
172 | ||
74aca95d VK |
173 | #define cpufreq_freq_attr_ro(_name) \ |
174 | static struct freq_attr _name = \ | |
175 | __ATTR(_name, 0444, show_##_name, NULL) | |
1da177e4 | 176 | |
74aca95d VK |
177 | #define cpufreq_freq_attr_ro_perm(_name, _perm) \ |
178 | static struct freq_attr _name = \ | |
179 | __ATTR(_name, _perm, show_##_name, NULL) | |
1da177e4 | 180 | |
74aca95d VK |
181 | #define cpufreq_freq_attr_rw(_name) \ |
182 | static struct freq_attr _name = \ | |
183 | __ATTR(_name, 0644, show_##_name, store_##_name) | |
184 | ||
185 | struct global_attr { | |
186 | struct attribute attr; | |
187 | ssize_t (*show)(struct kobject *kobj, | |
188 | struct attribute *attr, char *buf); | |
189 | ssize_t (*store)(struct kobject *a, struct attribute *b, | |
190 | const char *c, size_t count); | |
191 | }; | |
192 | ||
193 | #define define_one_global_ro(_name) \ | |
194 | static struct global_attr _name = \ | |
195 | __ATTR(_name, 0444, show_##_name, NULL) | |
196 | ||
197 | #define define_one_global_rw(_name) \ | |
198 | static struct global_attr _name = \ | |
199 | __ATTR(_name, 0644, show_##_name, store_##_name) | |
1da177e4 | 200 | |
1da177e4 LT |
201 | |
202 | struct cpufreq_driver { | |
1da177e4 LT |
203 | char name[CPUFREQ_NAME_LEN]; |
204 | u8 flags; | |
205 | ||
206 | /* needed by all drivers */ | |
207 | int (*init) (struct cpufreq_policy *policy); | |
208 | int (*verify) (struct cpufreq_policy *policy); | |
209 | ||
210 | /* define one out of two */ | |
211 | int (*setpolicy) (struct cpufreq_policy *policy); | |
9c0ebcf7 | 212 | int (*target) (struct cpufreq_policy *policy, /* Deprecated */ |
1da177e4 LT |
213 | unsigned int target_freq, |
214 | unsigned int relation); | |
9c0ebcf7 VK |
215 | int (*target_index) (struct cpufreq_policy *policy, |
216 | unsigned int index); | |
1da177e4 LT |
217 | |
218 | /* should be defined, if possible */ | |
219 | unsigned int (*get) (unsigned int cpu); | |
220 | ||
221 | /* optional */ | |
e2f74f35 | 222 | int (*bios_limit) (int cpu, unsigned int *limit); |
bf0b90e3 | 223 | |
1da177e4 | 224 | int (*exit) (struct cpufreq_policy *policy); |
7ca64e2d | 225 | int (*suspend) (struct cpufreq_policy *policy); |
1da177e4 LT |
226 | int (*resume) (struct cpufreq_policy *policy); |
227 | struct freq_attr **attr; | |
228 | }; | |
229 | ||
230 | /* flags */ | |
6461f018 VK |
231 | #define CPUFREQ_STICKY (1 << 0) /* driver isn't removed even if |
232 | all ->init() calls failed */ | |
233 | #define CPUFREQ_CONST_LOOPS (1 << 1) /* loops_per_jiffy or other | |
234 | kernel "constants" aren't | |
235 | affected by frequency | |
236 | transitions */ | |
237 | #define CPUFREQ_PM_NO_WARN (1 << 2) /* don't warn on suspend/resume | |
238 | speed mismatches */ | |
1da177e4 | 239 | |
0b981e70 VK |
240 | /* |
241 | * This should be set by platforms having multiple clock-domains, i.e. | |
242 | * supporting multiple policies. With this sysfs directories of governor would | |
243 | * be created in cpu/cpu<num>/cpufreq/ directory and so they can use the same | |
244 | * governor with different tunables for different clusters. | |
245 | */ | |
246 | #define CPUFREQ_HAVE_GOVERNOR_PER_POLICY (1 << 3) | |
247 | ||
7dbf694d VK |
248 | /* |
249 | * Driver will do POSTCHANGE notifications from outside of their ->target() | |
250 | * routine and so must set cpufreq_driver->flags with this flag, so that core | |
251 | * can handle them specially. | |
252 | */ | |
253 | #define CPUFREQ_ASYNC_NOTIFICATION (1 << 4) | |
254 | ||
221dee28 LT |
255 | int cpufreq_register_driver(struct cpufreq_driver *driver_data); |
256 | int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); | |
1da177e4 | 257 | |
74aca95d | 258 | const char *cpufreq_get_current_driver(void); |
1da177e4 | 259 | |
bb176f7d VK |
260 | static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, |
261 | unsigned int min, unsigned int max) | |
1da177e4 LT |
262 | { |
263 | if (policy->min < min) | |
264 | policy->min = min; | |
265 | if (policy->max < min) | |
266 | policy->max = min; | |
267 | if (policy->min > max) | |
268 | policy->min = max; | |
269 | if (policy->max > max) | |
270 | policy->max = max; | |
271 | if (policy->min > policy->max) | |
272 | policy->min = policy->max; | |
273 | return; | |
274 | } | |
275 | ||
be49e346 VK |
276 | static inline void |
277 | cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy) | |
278 | { | |
279 | cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq, | |
280 | policy->cpuinfo.max_freq); | |
281 | } | |
282 | ||
74aca95d VK |
283 | /********************************************************************* |
284 | * CPUFREQ NOTIFIER INTERFACE * | |
285 | *********************************************************************/ | |
6dad2a29 | 286 | |
74aca95d VK |
287 | #define CPUFREQ_TRANSITION_NOTIFIER (0) |
288 | #define CPUFREQ_POLICY_NOTIFIER (1) | |
1da177e4 | 289 | |
74aca95d VK |
290 | /* Transition notifiers */ |
291 | #define CPUFREQ_PRECHANGE (0) | |
292 | #define CPUFREQ_POSTCHANGE (1) | |
293 | #define CPUFREQ_RESUMECHANGE (8) | |
294 | #define CPUFREQ_SUSPENDCHANGE (9) | |
6dad2a29 | 295 | |
74aca95d VK |
296 | /* Policy Notifiers */ |
297 | #define CPUFREQ_ADJUST (0) | |
298 | #define CPUFREQ_INCOMPATIBLE (1) | |
299 | #define CPUFREQ_NOTIFY (2) | |
300 | #define CPUFREQ_START (3) | |
301 | #define CPUFREQ_UPDATE_POLICY_CPU (4) | |
6dad2a29 | 302 | |
74aca95d VK |
303 | #ifdef CONFIG_CPU_FREQ |
304 | int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list); | |
305 | int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list); | |
6dad2a29 | 306 | |
74aca95d VK |
307 | void cpufreq_notify_transition(struct cpufreq_policy *policy, |
308 | struct cpufreq_freqs *freqs, unsigned int state); | |
1da177e4 | 309 | |
74aca95d VK |
310 | #else /* CONFIG_CPU_FREQ */ |
311 | static inline int cpufreq_register_notifier(struct notifier_block *nb, | |
312 | unsigned int list) | |
2eca40a8 RD |
313 | { |
314 | return 0; | |
315 | } | |
74aca95d VK |
316 | static inline int cpufreq_unregister_notifier(struct notifier_block *nb, |
317 | unsigned int list) | |
95235ca2 VP |
318 | { |
319 | return 0; | |
320 | } | |
74aca95d VK |
321 | #endif /* !CONFIG_CPU_FREQ */ |
322 | ||
323 | /** | |
324 | * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch | |
325 | * safe) | |
326 | * @old: old value | |
327 | * @div: divisor | |
328 | * @mult: multiplier | |
329 | * | |
330 | * | |
331 | * new = old * mult / div | |
332 | */ | |
333 | static inline unsigned long cpufreq_scale(unsigned long old, u_int div, | |
334 | u_int mult) | |
3d737108 | 335 | { |
74aca95d VK |
336 | #if BITS_PER_LONG == 32 |
337 | u64 result = ((u64) old) * ((u64) mult); | |
338 | do_div(result, div); | |
339 | return (unsigned long) result; | |
340 | ||
341 | #elif BITS_PER_LONG == 64 | |
342 | unsigned long result = old * ((u64) mult); | |
343 | result /= div; | |
344 | return result; | |
95235ca2 | 345 | #endif |
74aca95d | 346 | } |
95235ca2 | 347 | |
1da177e4 | 348 | /********************************************************************* |
74aca95d | 349 | * CPUFREQ GOVERNORS * |
1da177e4 LT |
350 | *********************************************************************/ |
351 | ||
74aca95d VK |
352 | /* |
353 | * If (cpufreq_driver->target) exists, the ->governor decides what frequency | |
354 | * within the limits is used. If (cpufreq_driver->setpolicy> exists, these | |
355 | * two generic policies are available: | |
356 | */ | |
357 | #define CPUFREQ_POLICY_POWERSAVE (1) | |
358 | #define CPUFREQ_POLICY_PERFORMANCE (2) | |
359 | ||
360 | /* Governor Events */ | |
361 | #define CPUFREQ_GOV_START 1 | |
362 | #define CPUFREQ_GOV_STOP 2 | |
363 | #define CPUFREQ_GOV_LIMITS 3 | |
364 | #define CPUFREQ_GOV_POLICY_INIT 4 | |
365 | #define CPUFREQ_GOV_POLICY_EXIT 5 | |
366 | ||
367 | struct cpufreq_governor { | |
368 | char name[CPUFREQ_NAME_LEN]; | |
369 | int initialized; | |
370 | int (*governor) (struct cpufreq_policy *policy, | |
371 | unsigned int event); | |
372 | ssize_t (*show_setspeed) (struct cpufreq_policy *policy, | |
373 | char *buf); | |
374 | int (*store_setspeed) (struct cpufreq_policy *policy, | |
375 | unsigned int freq); | |
376 | unsigned int max_transition_latency; /* HW must be able to switch to | |
377 | next freq faster than this value in nano secs or we | |
378 | will fallback to performance governor */ | |
379 | struct list_head governor_list; | |
380 | struct module *owner; | |
381 | }; | |
382 | ||
383 | /* Pass a target to the cpufreq driver */ | |
384 | int cpufreq_driver_target(struct cpufreq_policy *policy, | |
385 | unsigned int target_freq, | |
386 | unsigned int relation); | |
387 | int __cpufreq_driver_target(struct cpufreq_policy *policy, | |
388 | unsigned int target_freq, | |
389 | unsigned int relation); | |
390 | int cpufreq_register_governor(struct cpufreq_governor *governor); | |
391 | void cpufreq_unregister_governor(struct cpufreq_governor *governor); | |
392 | ||
393 | /* CPUFREQ DEFAULT GOVERNOR */ | |
1c256245 | 394 | /* |
bb176f7d VK |
395 | * Performance governor is fallback governor if any other gov failed to auto |
396 | * load due latency restrictions | |
397 | */ | |
6afde10c | 398 | #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE |
1da177e4 | 399 | extern struct cpufreq_governor cpufreq_gov_performance; |
6afde10c | 400 | #endif |
1c256245 TR |
401 | #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE |
402 | #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_performance) | |
30d221db AG |
403 | #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE) |
404 | extern struct cpufreq_governor cpufreq_gov_powersave; | |
405 | #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_powersave) | |
1da177e4 LT |
406 | #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE) |
407 | extern struct cpufreq_governor cpufreq_gov_userspace; | |
1c256245 TR |
408 | #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_userspace) |
409 | #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND) | |
410 | extern struct cpufreq_governor cpufreq_gov_ondemand; | |
411 | #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_ondemand) | |
412 | #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE) | |
413 | extern struct cpufreq_governor cpufreq_gov_conservative; | |
414 | #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_conservative) | |
1da177e4 LT |
415 | #endif |
416 | ||
1da177e4 LT |
417 | /********************************************************************* |
418 | * FREQUENCY TABLE HELPERS * | |
419 | *********************************************************************/ | |
420 | ||
421 | #define CPUFREQ_ENTRY_INVALID ~0 | |
422 | #define CPUFREQ_TABLE_END ~1 | |
423 | ||
424 | struct cpufreq_frequency_table { | |
50701588 | 425 | unsigned int driver_data; /* driver specific data, not used by core */ |
1da177e4 LT |
426 | unsigned int frequency; /* kHz - doesn't need to be in ascending |
427 | * order */ | |
428 | }; | |
429 | ||
430 | int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, | |
431 | struct cpufreq_frequency_table *table); | |
432 | ||
433 | int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, | |
434 | struct cpufreq_frequency_table *table); | |
18434512 | 435 | int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy); |
1da177e4 LT |
436 | |
437 | int cpufreq_frequency_table_target(struct cpufreq_policy *policy, | |
438 | struct cpufreq_frequency_table *table, | |
439 | unsigned int target_freq, | |
440 | unsigned int relation, | |
441 | unsigned int *index); | |
442 | ||
74aca95d VK |
443 | void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); |
444 | ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf); | |
445 | ||
446 | /* the following funtion is for cpufreq core use only */ | |
1da177e4 | 447 | struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); |
1da177e4 LT |
448 | |
449 | /* the following are really really optional */ | |
450 | extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; | |
18434512 | 451 | extern struct freq_attr *cpufreq_generic_attr[]; |
335dc333 | 452 | void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, |
1da177e4 | 453 | unsigned int cpu); |
1da177e4 | 454 | void cpufreq_frequency_table_put_attr(unsigned int cpu); |
27047a60 VK |
455 | int cpufreq_table_validate_and_show(struct cpufreq_policy *policy, |
456 | struct cpufreq_frequency_table *table); | |
f4fd3797 | 457 | |
70e9e778 VK |
458 | int cpufreq_generic_init(struct cpufreq_policy *policy, |
459 | struct cpufreq_frequency_table *table, | |
460 | unsigned int transition_latency); | |
18434512 VK |
461 | static inline int cpufreq_generic_exit(struct cpufreq_policy *policy) |
462 | { | |
463 | cpufreq_frequency_table_put_attr(policy->cpu); | |
464 | return 0; | |
465 | } | |
466 | ||
1da177e4 | 467 | #endif /* _LINUX_CPUFREQ_H */ |