Commit | Line | Data |
---|---|---|
c0a31329 TG |
1 | /* |
2 | * include/linux/hrtimer.h | |
3 | * | |
4 | * hrtimers - High-resolution kernel timers | |
5 | * | |
6 | * Copyright(C) 2005, Thomas Gleixner <tglx@linutronix.de> | |
7 | * Copyright(C) 2005, Red Hat, Inc., Ingo Molnar | |
8 | * | |
9 | * data type definitions, declarations, prototypes | |
10 | * | |
11 | * Started by: Thomas Gleixner and Ingo Molnar | |
12 | * | |
13 | * For licencing details see kernel-base/COPYING | |
14 | */ | |
15 | #ifndef _LINUX_HRTIMER_H | |
16 | #define _LINUX_HRTIMER_H | |
17 | ||
18 | #include <linux/rbtree.h> | |
19 | #include <linux/ktime.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/list.h> | |
22 | #include <linux/wait.h> | |
40b86062 | 23 | #include <linux/percpu.h> |
507e1231 | 24 | #include <linux/timer.h> |
40b86062 | 25 | |
c0a31329 | 26 | |
3c8aa39d TG |
27 | struct hrtimer_clock_base; |
28 | struct hrtimer_cpu_base; | |
29 | ||
c0a31329 TG |
30 | /* |
31 | * Mode arguments of xxx_hrtimer functions: | |
32 | */ | |
33 | enum hrtimer_mode { | |
597d0275 AB |
34 | HRTIMER_MODE_ABS = 0x0, /* Time value is absolute */ |
35 | HRTIMER_MODE_REL = 0x1, /* Time value is relative to now */ | |
36 | HRTIMER_MODE_PINNED = 0x02, /* Timer is bound to CPU */ | |
37 | HRTIMER_MODE_ABS_PINNED = 0x02, | |
38 | HRTIMER_MODE_REL_PINNED = 0x03, | |
c0a31329 TG |
39 | }; |
40 | ||
c9cb2e3d TG |
41 | /* |
42 | * Return values for the callback function | |
43 | */ | |
c0a31329 | 44 | enum hrtimer_restart { |
c9cb2e3d TG |
45 | HRTIMER_NORESTART, /* Timer is not restarted */ |
46 | HRTIMER_RESTART, /* Timer must be restarted */ | |
c0a31329 TG |
47 | }; |
48 | ||
54cdfdb4 TG |
49 | /* |
50 | * Values to track state of the timer | |
303e967f TG |
51 | * |
52 | * Possible states: | |
53 | * | |
54 | * 0x00 inactive | |
55 | * 0x01 enqueued into rbtree | |
56 | * 0x02 callback function running | |
54cdfdb4 | 57 | * |
b00c1a99 | 58 | * Special cases: |
303e967f TG |
59 | * 0x03 callback function running and enqueued |
60 | * (was requeued on another CPU) | |
b00c1a99 | 61 | * 0x09 timer was migrated on CPU hotunplug |
303e967f TG |
62 | * The "callback function running and enqueued" status is only possible on |
63 | * SMP. It happens for example when a posix timer expired and the callback | |
64 | * queued a signal. Between dropping the lock which protects the posix timer | |
65 | * and reacquiring the base lock of the hrtimer, another CPU can deliver the | |
66 | * signal and rearm the timer. We have to preserve the callback running state, | |
67 | * as otherwise the timer could be removed before the softirq code finishes the | |
68 | * the handling of the timer. | |
69 | * | |
3eb05676 | 70 | * The HRTIMER_STATE_ENQUEUED bit is always or'ed to the current state to |
303e967f TG |
71 | * preserve the HRTIMER_STATE_CALLBACK bit in the above scenario. |
72 | * | |
73 | * All state transitions are protected by cpu_base->lock. | |
74 | */ | |
75 | #define HRTIMER_STATE_INACTIVE 0x00 | |
76 | #define HRTIMER_STATE_ENQUEUED 0x01 | |
77 | #define HRTIMER_STATE_CALLBACK 0x02 | |
ca109491 | 78 | #define HRTIMER_STATE_MIGRATE 0x04 |
303e967f | 79 | |
c0a31329 TG |
80 | /** |
81 | * struct hrtimer - the basic hrtimer structure | |
c0a31329 | 82 | * @node: red black tree node for time ordered insertion |
592aa999 | 83 | * @_expires: the absolute expiry time in the hrtimers internal |
c0a31329 | 84 | * representation. The time is related to the clock on |
592aa999 TG |
85 | * which the timer is based. Is setup by adding |
86 | * slack to the _softexpires value. For non range timers | |
87 | * identical to _softexpires. | |
88 | * @_softexpires: the absolute earliest expiry time of the hrtimer. | |
89 | * The time which was given as expiry time when the timer | |
90 | * was armed. | |
c0a31329 | 91 | * @function: timer expiry callback function |
c0a31329 | 92 | * @base: pointer to the timer base (per cpu and per clock) |
303e967f | 93 | * @state: state information (See bit values above) |
54cdfdb4 TG |
94 | * @cb_entry: list head to enqueue an expired timer into the callback list |
95 | * @start_site: timer statistics field to store the site where the timer | |
96 | * was started | |
97 | * @start_comm: timer statistics field to store the name of the process which | |
98 | * started the timer | |
99 | * @start_pid: timer statistics field to store the pid of the task which | |
100 | * started the timer | |
c0a31329 | 101 | * |
54cdfdb4 | 102 | * The hrtimer structure must be initialized by hrtimer_init() |
c0a31329 TG |
103 | */ |
104 | struct hrtimer { | |
3c8aa39d | 105 | struct rb_node node; |
799b64de | 106 | ktime_t _expires; |
654c8e0b | 107 | ktime_t _softexpires; |
3c8aa39d TG |
108 | enum hrtimer_restart (*function)(struct hrtimer *); |
109 | struct hrtimer_clock_base *base; | |
303e967f | 110 | unsigned long state; |
54cdfdb4 | 111 | struct list_head cb_entry; |
82f67cd9 | 112 | #ifdef CONFIG_TIMER_STATS |
1b024690 | 113 | int start_pid; |
82f67cd9 IM |
114 | void *start_site; |
115 | char start_comm[16]; | |
82f67cd9 | 116 | #endif |
c0a31329 TG |
117 | }; |
118 | ||
00362e33 TG |
119 | /** |
120 | * struct hrtimer_sleeper - simple sleeper structure | |
00362e33 TG |
121 | * @timer: embedded timer structure |
122 | * @task: task to wake up | |
123 | * | |
124 | * task is set to NULL, when the timer expires. | |
125 | */ | |
126 | struct hrtimer_sleeper { | |
127 | struct hrtimer timer; | |
128 | struct task_struct *task; | |
129 | }; | |
130 | ||
c0a31329 | 131 | /** |
d1d67174 | 132 | * struct hrtimer_clock_base - the timer base for a specific clock |
05fb6bf0 | 133 | * @cpu_base: per cpu clock base |
3c8aa39d TG |
134 | * @index: clock type index for per_cpu support when moving a |
135 | * timer to a base on another cpu. | |
92127c7a TG |
136 | * @active: red black tree root node for the active timers |
137 | * @first: pointer to the timer node which expires first | |
138 | * @resolution: the resolution of the clock, in nanoseconds | |
139 | * @get_time: function to retrieve the current time of the clock | |
92127c7a | 140 | * @softirq_time: the time when running the hrtimer queue in the softirq |
54cdfdb4 | 141 | * @offset: offset of this clock to the monotonic base |
c0a31329 | 142 | */ |
3c8aa39d TG |
143 | struct hrtimer_clock_base { |
144 | struct hrtimer_cpu_base *cpu_base; | |
c0a31329 | 145 | clockid_t index; |
c0a31329 | 146 | struct rb_root active; |
288867ec | 147 | struct rb_node *first; |
e2787630 | 148 | ktime_t resolution; |
c0a31329 | 149 | ktime_t (*get_time)(void); |
92127c7a | 150 | ktime_t softirq_time; |
54cdfdb4 TG |
151 | #ifdef CONFIG_HIGH_RES_TIMERS |
152 | ktime_t offset; | |
54cdfdb4 | 153 | #endif |
3c8aa39d TG |
154 | }; |
155 | ||
156 | #define HRTIMER_MAX_CLOCK_BASES 2 | |
157 | ||
158 | /* | |
159 | * struct hrtimer_cpu_base - the per cpu clock bases | |
160 | * @lock: lock protecting the base and associated clock bases | |
161 | * and timers | |
3c8aa39d TG |
162 | * @clock_base: array of clock bases for this cpu |
163 | * @curr_timer: the timer which is executing a callback right now | |
54cdfdb4 TG |
164 | * @expires_next: absolute time of the next event which was scheduled |
165 | * via clock_set_next_event() | |
166 | * @hres_active: State of high resolution mode | |
167 | * @check_clocks: Indictator, when set evaluate time source and clock | |
168 | * event devices whether high resolution mode can be | |
169 | * activated. | |
54cdfdb4 | 170 | * @nr_events: Total number of timer interrupt events |
3c8aa39d TG |
171 | */ |
172 | struct hrtimer_cpu_base { | |
173 | spinlock_t lock; | |
3c8aa39d | 174 | struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES]; |
54cdfdb4 TG |
175 | #ifdef CONFIG_HIGH_RES_TIMERS |
176 | ktime_t expires_next; | |
177 | int hres_active; | |
54cdfdb4 TG |
178 | unsigned long nr_events; |
179 | #endif | |
c0a31329 TG |
180 | }; |
181 | ||
63ca243b AV |
182 | static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time) |
183 | { | |
799b64de | 184 | timer->_expires = time; |
654c8e0b | 185 | timer->_softexpires = time; |
63ca243b | 186 | } |
654c8e0b AV |
187 | |
188 | static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta) | |
189 | { | |
190 | timer->_softexpires = time; | |
191 | timer->_expires = ktime_add_safe(time, delta); | |
192 | } | |
193 | ||
194 | static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta) | |
195 | { | |
196 | timer->_softexpires = time; | |
197 | timer->_expires = ktime_add_safe(time, ns_to_ktime(delta)); | |
198 | } | |
199 | ||
63ca243b AV |
200 | static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64) |
201 | { | |
799b64de | 202 | timer->_expires.tv64 = tv64; |
654c8e0b | 203 | timer->_softexpires.tv64 = tv64; |
63ca243b AV |
204 | } |
205 | ||
206 | static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time) | |
207 | { | |
799b64de | 208 | timer->_expires = ktime_add_safe(timer->_expires, time); |
654c8e0b | 209 | timer->_softexpires = ktime_add_safe(timer->_softexpires, time); |
63ca243b AV |
210 | } |
211 | ||
7597bc94 | 212 | static inline void hrtimer_add_expires_ns(struct hrtimer *timer, u64 ns) |
63ca243b | 213 | { |
799b64de | 214 | timer->_expires = ktime_add_ns(timer->_expires, ns); |
654c8e0b | 215 | timer->_softexpires = ktime_add_ns(timer->_softexpires, ns); |
63ca243b AV |
216 | } |
217 | ||
218 | static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer) | |
219 | { | |
799b64de | 220 | return timer->_expires; |
63ca243b AV |
221 | } |
222 | ||
654c8e0b AV |
223 | static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer) |
224 | { | |
225 | return timer->_softexpires; | |
226 | } | |
227 | ||
63ca243b AV |
228 | static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer) |
229 | { | |
799b64de | 230 | return timer->_expires.tv64; |
63ca243b | 231 | } |
654c8e0b AV |
232 | static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer) |
233 | { | |
234 | return timer->_softexpires.tv64; | |
235 | } | |
63ca243b AV |
236 | |
237 | static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer) | |
238 | { | |
799b64de | 239 | return ktime_to_ns(timer->_expires); |
63ca243b AV |
240 | } |
241 | ||
242 | static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer) | |
243 | { | |
799b64de | 244 | return ktime_sub(timer->_expires, timer->base->get_time()); |
63ca243b AV |
245 | } |
246 | ||
54cdfdb4 TG |
247 | #ifdef CONFIG_HIGH_RES_TIMERS |
248 | struct clock_event_device; | |
249 | ||
250 | extern void clock_was_set(void); | |
995f054f | 251 | extern void hres_timers_resume(void); |
54cdfdb4 TG |
252 | extern void hrtimer_interrupt(struct clock_event_device *dev); |
253 | ||
254 | /* | |
255 | * In high resolution mode the time reference must be read accurate | |
256 | */ | |
257 | static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer) | |
258 | { | |
259 | return timer->base->get_time(); | |
260 | } | |
261 | ||
8f4d37ec PZ |
262 | static inline int hrtimer_is_hres_active(struct hrtimer *timer) |
263 | { | |
264 | return timer->base->cpu_base->hres_active; | |
265 | } | |
266 | ||
2075eb8d AV |
267 | extern void hrtimer_peek_ahead_timers(void); |
268 | ||
54cdfdb4 TG |
269 | /* |
270 | * The resolution of the clocks. The resolution value is returned in | |
271 | * the clock_getres() system call to give application programmers an | |
272 | * idea of the (in)accuracy of timers. Timer values are rounded up to | |
273 | * this resolution values. | |
274 | */ | |
151db1fc TB |
275 | # define HIGH_RES_NSEC 1 |
276 | # define KTIME_HIGH_RES (ktime_t) { .tv64 = HIGH_RES_NSEC } | |
277 | # define MONOTONIC_RES_NSEC HIGH_RES_NSEC | |
54cdfdb4 TG |
278 | # define KTIME_MONOTONIC_RES KTIME_HIGH_RES |
279 | ||
280 | #else | |
281 | ||
151db1fc | 282 | # define MONOTONIC_RES_NSEC LOW_RES_NSEC |
54cdfdb4 TG |
283 | # define KTIME_MONOTONIC_RES KTIME_LOW_RES |
284 | ||
becf8b5d TG |
285 | /* |
286 | * clock_was_set() is a NOP for non- high-resolution systems. The | |
287 | * time-sorted order guarantees that a timer does not expire early and | |
288 | * is expired in the next softirq when the clock was advanced. | |
289 | */ | |
54cdfdb4 | 290 | static inline void clock_was_set(void) { } |
2075eb8d | 291 | static inline void hrtimer_peek_ahead_timers(void) { } |
54cdfdb4 | 292 | |
995f054f IM |
293 | static inline void hres_timers_resume(void) { } |
294 | ||
54cdfdb4 TG |
295 | /* |
296 | * In non high resolution mode the time reference is taken from | |
297 | * the base softirq time variable. | |
298 | */ | |
299 | static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer) | |
300 | { | |
301 | return timer->base->softirq_time; | |
302 | } | |
303 | ||
8f4d37ec PZ |
304 | static inline int hrtimer_is_hres_active(struct hrtimer *timer) |
305 | { | |
306 | return 0; | |
307 | } | |
54cdfdb4 TG |
308 | #endif |
309 | ||
d316c57f TG |
310 | extern ktime_t ktime_get(void); |
311 | extern ktime_t ktime_get_real(void); | |
becf8b5d | 312 | |
2e94d1f7 AV |
313 | |
314 | DECLARE_PER_CPU(struct tick_device, tick_cpu_device); | |
2e94d1f7 AV |
315 | |
316 | ||
c0a31329 TG |
317 | /* Exported timer functions: */ |
318 | ||
319 | /* Initialize timers: */ | |
7978672c GA |
320 | extern void hrtimer_init(struct hrtimer *timer, clockid_t which_clock, |
321 | enum hrtimer_mode mode); | |
c0a31329 | 322 | |
237fc6e7 TG |
323 | #ifdef CONFIG_DEBUG_OBJECTS_TIMERS |
324 | extern void hrtimer_init_on_stack(struct hrtimer *timer, clockid_t which_clock, | |
325 | enum hrtimer_mode mode); | |
326 | ||
327 | extern void destroy_hrtimer_on_stack(struct hrtimer *timer); | |
328 | #else | |
329 | static inline void hrtimer_init_on_stack(struct hrtimer *timer, | |
330 | clockid_t which_clock, | |
331 | enum hrtimer_mode mode) | |
332 | { | |
333 | hrtimer_init(timer, which_clock, mode); | |
334 | } | |
335 | static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { } | |
336 | #endif | |
337 | ||
c0a31329 TG |
338 | /* Basic timer operations: */ |
339 | extern int hrtimer_start(struct hrtimer *timer, ktime_t tim, | |
340 | const enum hrtimer_mode mode); | |
da8f2e17 AV |
341 | extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, |
342 | unsigned long range_ns, const enum hrtimer_mode mode); | |
7f1e2ca9 PZ |
343 | extern int |
344 | __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, | |
345 | unsigned long delta_ns, | |
346 | const enum hrtimer_mode mode, int wakeup); | |
347 | ||
c0a31329 TG |
348 | extern int hrtimer_cancel(struct hrtimer *timer); |
349 | extern int hrtimer_try_to_cancel(struct hrtimer *timer); | |
350 | ||
63ca243b AV |
351 | static inline int hrtimer_start_expires(struct hrtimer *timer, |
352 | enum hrtimer_mode mode) | |
353 | { | |
da8f2e17 AV |
354 | unsigned long delta; |
355 | ktime_t soft, hard; | |
356 | soft = hrtimer_get_softexpires(timer); | |
357 | hard = hrtimer_get_expires(timer); | |
358 | delta = ktime_to_ns(ktime_sub(hard, soft)); | |
4ce105d3 | 359 | return hrtimer_start_range_ns(timer, soft, delta, mode); |
63ca243b AV |
360 | } |
361 | ||
c9cb2e3d TG |
362 | static inline int hrtimer_restart(struct hrtimer *timer) |
363 | { | |
654c8e0b | 364 | return hrtimer_start_expires(timer, HRTIMER_MODE_ABS); |
c9cb2e3d | 365 | } |
c0a31329 TG |
366 | |
367 | /* Query timers: */ | |
368 | extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer); | |
369 | extern int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp); | |
370 | ||
69239749 | 371 | extern ktime_t hrtimer_get_next_event(void); |
69239749 | 372 | |
303e967f TG |
373 | /* |
374 | * A timer is active, when it is enqueued into the rbtree or the callback | |
375 | * function is running. | |
376 | */ | |
c0a31329 TG |
377 | static inline int hrtimer_active(const struct hrtimer *timer) |
378 | { | |
303e967f | 379 | return timer->state != HRTIMER_STATE_INACTIVE; |
c0a31329 TG |
380 | } |
381 | ||
54cdfdb4 TG |
382 | /* |
383 | * Helper function to check, whether the timer is on one of the queues | |
384 | */ | |
385 | static inline int hrtimer_is_queued(struct hrtimer *timer) | |
386 | { | |
ca109491 | 387 | return timer->state & HRTIMER_STATE_ENQUEUED; |
54cdfdb4 TG |
388 | } |
389 | ||
4346f654 OH |
390 | /* |
391 | * Helper function to check, whether the timer is running the callback | |
392 | * function | |
393 | */ | |
394 | static inline int hrtimer_callback_running(struct hrtimer *timer) | |
395 | { | |
396 | return timer->state & HRTIMER_STATE_CALLBACK; | |
397 | } | |
398 | ||
c0a31329 | 399 | /* Forward a hrtimer so it expires after now: */ |
4d672e7a | 400 | extern u64 |
44f21475 | 401 | hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval); |
c0a31329 | 402 | |
5e05ad7d | 403 | /* Forward a hrtimer so it expires after the hrtimer's current now */ |
4d672e7a DL |
404 | static inline u64 hrtimer_forward_now(struct hrtimer *timer, |
405 | ktime_t interval) | |
5e05ad7d DL |
406 | { |
407 | return hrtimer_forward(timer, timer->base->get_time(), interval); | |
408 | } | |
409 | ||
10c94ec1 TG |
410 | /* Precise sleep: */ |
411 | extern long hrtimer_nanosleep(struct timespec *rqtp, | |
080344b9 | 412 | struct timespec __user *rmtp, |
10c94ec1 TG |
413 | const enum hrtimer_mode mode, |
414 | const clockid_t clockid); | |
1711ef38 | 415 | extern long hrtimer_nanosleep_restart(struct restart_block *restart_block); |
10c94ec1 | 416 | |
00362e33 TG |
417 | extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, |
418 | struct task_struct *tsk); | |
419 | ||
654c8e0b AV |
420 | extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta, |
421 | const enum hrtimer_mode mode); | |
7bb67439 AV |
422 | extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode); |
423 | ||
c0a31329 TG |
424 | /* Soft interrupt function to run the hrtimer queues: */ |
425 | extern void hrtimer_run_queues(void); | |
d3d74453 | 426 | extern void hrtimer_run_pending(void); |
c0a31329 TG |
427 | |
428 | /* Bootup initialization: */ | |
429 | extern void __init hrtimers_init(void); | |
430 | ||
79bf2bb3 | 431 | #if BITS_PER_LONG < 64 |
4d672e7a | 432 | extern u64 ktime_divns(const ktime_t kt, s64 div); |
79bf2bb3 | 433 | #else /* BITS_PER_LONG < 64 */ |
4d672e7a | 434 | # define ktime_divns(kt, div) (u64)((kt).tv64 / (div)) |
79bf2bb3 TG |
435 | #endif |
436 | ||
88ad0bf6 IM |
437 | /* Show pending timers: */ |
438 | extern void sysrq_timer_list_show(void); | |
439 | ||
82f67cd9 IM |
440 | /* |
441 | * Timer-statistics info: | |
442 | */ | |
443 | #ifdef CONFIG_TIMER_STATS | |
444 | ||
445 | extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf, | |
c5c061b8 VP |
446 | void *timerf, char *comm, |
447 | unsigned int timer_flag); | |
82f67cd9 IM |
448 | |
449 | static inline void timer_stats_account_hrtimer(struct hrtimer *timer) | |
450 | { | |
507e1231 HC |
451 | if (likely(!timer->start_pid)) |
452 | return; | |
82f67cd9 | 453 | timer_stats_update_stats(timer, timer->start_pid, timer->start_site, |
c5c061b8 | 454 | timer->function, timer->start_comm, 0); |
82f67cd9 IM |
455 | } |
456 | ||
457 | extern void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer, | |
458 | void *addr); | |
459 | ||
460 | static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer) | |
461 | { | |
507e1231 HC |
462 | if (likely(!timer_stats_active)) |
463 | return; | |
82f67cd9 IM |
464 | __timer_stats_hrtimer_set_start_info(timer, __builtin_return_address(0)); |
465 | } | |
466 | ||
467 | static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer) | |
468 | { | |
469 | timer->start_site = NULL; | |
470 | } | |
471 | #else | |
472 | static inline void timer_stats_account_hrtimer(struct hrtimer *timer) | |
473 | { | |
474 | } | |
475 | ||
476 | static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer) | |
477 | { | |
478 | } | |
479 | ||
480 | static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer) | |
481 | { | |
482 | } | |
483 | #endif | |
484 | ||
c0a31329 | 485 | #endif |