]>
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> | |
23 | ||
3c8aa39d TG |
24 | struct hrtimer_clock_base; |
25 | struct hrtimer_cpu_base; | |
26 | ||
c0a31329 TG |
27 | /* |
28 | * Mode arguments of xxx_hrtimer functions: | |
29 | */ | |
30 | enum hrtimer_mode { | |
c9cb2e3d TG |
31 | HRTIMER_MODE_ABS, /* Time value is absolute */ |
32 | HRTIMER_MODE_REL, /* Time value is relative to now */ | |
c0a31329 TG |
33 | }; |
34 | ||
c9cb2e3d TG |
35 | /* |
36 | * Return values for the callback function | |
37 | */ | |
c0a31329 | 38 | enum hrtimer_restart { |
c9cb2e3d TG |
39 | HRTIMER_NORESTART, /* Timer is not restarted */ |
40 | HRTIMER_RESTART, /* Timer must be restarted */ | |
c0a31329 TG |
41 | }; |
42 | ||
303e967f | 43 | /* |
54cdfdb4 TG |
44 | * hrtimer callback modes: |
45 | * | |
46 | * HRTIMER_CB_SOFTIRQ: Callback must run in softirq context | |
47 | * HRTIMER_CB_IRQSAFE: Callback may run in hardirq context | |
48 | * HRTIMER_CB_IRQSAFE_NO_RESTART: Callback may run in hardirq context and | |
49 | * does not restart the timer | |
8437fdc7 | 50 | * HRTIMER_CB_IRQSAFE_NO_SOFTIRQ: Callback must run in hardirq context |
54cdfdb4 TG |
51 | * Special mode for tick emultation |
52 | */ | |
53 | enum hrtimer_cb_mode { | |
54 | HRTIMER_CB_SOFTIRQ, | |
55 | HRTIMER_CB_IRQSAFE, | |
56 | HRTIMER_CB_IRQSAFE_NO_RESTART, | |
57 | HRTIMER_CB_IRQSAFE_NO_SOFTIRQ, | |
58 | }; | |
59 | ||
60 | /* | |
61 | * Values to track state of the timer | |
303e967f TG |
62 | * |
63 | * Possible states: | |
64 | * | |
65 | * 0x00 inactive | |
66 | * 0x01 enqueued into rbtree | |
67 | * 0x02 callback function running | |
54cdfdb4 TG |
68 | * 0x04 callback pending (high resolution mode) |
69 | * | |
70 | * Special case: | |
303e967f TG |
71 | * 0x03 callback function running and enqueued |
72 | * (was requeued on another CPU) | |
303e967f TG |
73 | * The "callback function running and enqueued" status is only possible on |
74 | * SMP. It happens for example when a posix timer expired and the callback | |
75 | * queued a signal. Between dropping the lock which protects the posix timer | |
76 | * and reacquiring the base lock of the hrtimer, another CPU can deliver the | |
77 | * signal and rearm the timer. We have to preserve the callback running state, | |
78 | * as otherwise the timer could be removed before the softirq code finishes the | |
79 | * the handling of the timer. | |
80 | * | |
3eb05676 | 81 | * The HRTIMER_STATE_ENQUEUED bit is always or'ed to the current state to |
303e967f TG |
82 | * preserve the HRTIMER_STATE_CALLBACK bit in the above scenario. |
83 | * | |
84 | * All state transitions are protected by cpu_base->lock. | |
85 | */ | |
86 | #define HRTIMER_STATE_INACTIVE 0x00 | |
87 | #define HRTIMER_STATE_ENQUEUED 0x01 | |
88 | #define HRTIMER_STATE_CALLBACK 0x02 | |
54cdfdb4 | 89 | #define HRTIMER_STATE_PENDING 0x04 |
303e967f | 90 | |
c0a31329 TG |
91 | /** |
92 | * struct hrtimer - the basic hrtimer structure | |
c0a31329 | 93 | * @node: red black tree node for time ordered insertion |
c0a31329 TG |
94 | * @expires: the absolute expiry time in the hrtimers internal |
95 | * representation. The time is related to the clock on | |
96 | * which the timer is based. | |
c0a31329 | 97 | * @function: timer expiry callback function |
c0a31329 | 98 | * @base: pointer to the timer base (per cpu and per clock) |
303e967f | 99 | * @state: state information (See bit values above) |
54cdfdb4 TG |
100 | * @cb_mode: high resolution timer feature to select the callback execution |
101 | * mode | |
102 | * @cb_entry: list head to enqueue an expired timer into the callback list | |
103 | * @start_site: timer statistics field to store the site where the timer | |
104 | * was started | |
105 | * @start_comm: timer statistics field to store the name of the process which | |
106 | * started the timer | |
107 | * @start_pid: timer statistics field to store the pid of the task which | |
108 | * started the timer | |
c0a31329 | 109 | * |
54cdfdb4 | 110 | * The hrtimer structure must be initialized by hrtimer_init() |
c0a31329 TG |
111 | */ |
112 | struct hrtimer { | |
3c8aa39d | 113 | struct rb_node node; |
799b64de | 114 | ktime_t _expires; |
654c8e0b | 115 | ktime_t _softexpires; |
3c8aa39d TG |
116 | enum hrtimer_restart (*function)(struct hrtimer *); |
117 | struct hrtimer_clock_base *base; | |
303e967f | 118 | unsigned long state; |
54cdfdb4 TG |
119 | enum hrtimer_cb_mode cb_mode; |
120 | struct list_head cb_entry; | |
82f67cd9 IM |
121 | #ifdef CONFIG_TIMER_STATS |
122 | void *start_site; | |
123 | char start_comm[16]; | |
124 | int start_pid; | |
125 | #endif | |
c0a31329 TG |
126 | }; |
127 | ||
00362e33 TG |
128 | /** |
129 | * struct hrtimer_sleeper - simple sleeper structure | |
00362e33 TG |
130 | * @timer: embedded timer structure |
131 | * @task: task to wake up | |
132 | * | |
133 | * task is set to NULL, when the timer expires. | |
134 | */ | |
135 | struct hrtimer_sleeper { | |
136 | struct hrtimer timer; | |
137 | struct task_struct *task; | |
138 | }; | |
139 | ||
c0a31329 | 140 | /** |
d1d67174 | 141 | * struct hrtimer_clock_base - the timer base for a specific clock |
05fb6bf0 | 142 | * @cpu_base: per cpu clock base |
3c8aa39d TG |
143 | * @index: clock type index for per_cpu support when moving a |
144 | * timer to a base on another cpu. | |
92127c7a TG |
145 | * @active: red black tree root node for the active timers |
146 | * @first: pointer to the timer node which expires first | |
147 | * @resolution: the resolution of the clock, in nanoseconds | |
148 | * @get_time: function to retrieve the current time of the clock | |
a580290c | 149 | * @get_softirq_time: function to retrieve the current time from the softirq |
92127c7a | 150 | * @softirq_time: the time when running the hrtimer queue in the softirq |
54cdfdb4 TG |
151 | * @offset: offset of this clock to the monotonic base |
152 | * @reprogram: function to reprogram the timer event | |
c0a31329 | 153 | */ |
3c8aa39d TG |
154 | struct hrtimer_clock_base { |
155 | struct hrtimer_cpu_base *cpu_base; | |
c0a31329 | 156 | clockid_t index; |
c0a31329 | 157 | struct rb_root active; |
288867ec | 158 | struct rb_node *first; |
e2787630 | 159 | ktime_t resolution; |
c0a31329 | 160 | ktime_t (*get_time)(void); |
92127c7a | 161 | ktime_t (*get_softirq_time)(void); |
92127c7a | 162 | ktime_t softirq_time; |
54cdfdb4 TG |
163 | #ifdef CONFIG_HIGH_RES_TIMERS |
164 | ktime_t offset; | |
165 | int (*reprogram)(struct hrtimer *t, | |
166 | struct hrtimer_clock_base *b, | |
167 | ktime_t n); | |
168 | #endif | |
3c8aa39d TG |
169 | }; |
170 | ||
171 | #define HRTIMER_MAX_CLOCK_BASES 2 | |
172 | ||
173 | /* | |
174 | * struct hrtimer_cpu_base - the per cpu clock bases | |
175 | * @lock: lock protecting the base and associated clock bases | |
176 | * and timers | |
3c8aa39d TG |
177 | * @clock_base: array of clock bases for this cpu |
178 | * @curr_timer: the timer which is executing a callback right now | |
54cdfdb4 TG |
179 | * @expires_next: absolute time of the next event which was scheduled |
180 | * via clock_set_next_event() | |
181 | * @hres_active: State of high resolution mode | |
182 | * @check_clocks: Indictator, when set evaluate time source and clock | |
183 | * event devices whether high resolution mode can be | |
184 | * activated. | |
185 | * @cb_pending: Expired timers are moved from the rbtree to this | |
186 | * list in the timer interrupt. The list is processed | |
187 | * in the softirq. | |
188 | * @nr_events: Total number of timer interrupt events | |
3c8aa39d TG |
189 | */ |
190 | struct hrtimer_cpu_base { | |
191 | spinlock_t lock; | |
3c8aa39d | 192 | struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES]; |
d3d74453 | 193 | struct list_head cb_pending; |
54cdfdb4 TG |
194 | #ifdef CONFIG_HIGH_RES_TIMERS |
195 | ktime_t expires_next; | |
196 | int hres_active; | |
54cdfdb4 TG |
197 | unsigned long nr_events; |
198 | #endif | |
c0a31329 TG |
199 | }; |
200 | ||
63ca243b AV |
201 | static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time) |
202 | { | |
799b64de | 203 | timer->_expires = time; |
654c8e0b | 204 | timer->_softexpires = time; |
63ca243b | 205 | } |
654c8e0b AV |
206 | |
207 | static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta) | |
208 | { | |
209 | timer->_softexpires = time; | |
210 | timer->_expires = ktime_add_safe(time, delta); | |
211 | } | |
212 | ||
213 | static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta) | |
214 | { | |
215 | timer->_softexpires = time; | |
216 | timer->_expires = ktime_add_safe(time, ns_to_ktime(delta)); | |
217 | } | |
218 | ||
63ca243b AV |
219 | static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64) |
220 | { | |
799b64de | 221 | timer->_expires.tv64 = tv64; |
654c8e0b | 222 | timer->_softexpires.tv64 = tv64; |
63ca243b AV |
223 | } |
224 | ||
225 | static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time) | |
226 | { | |
799b64de | 227 | timer->_expires = ktime_add_safe(timer->_expires, time); |
654c8e0b | 228 | timer->_softexpires = ktime_add_safe(timer->_softexpires, time); |
63ca243b AV |
229 | } |
230 | ||
231 | static inline void hrtimer_add_expires_ns(struct hrtimer *timer, unsigned long ns) | |
232 | { | |
799b64de | 233 | timer->_expires = ktime_add_ns(timer->_expires, ns); |
654c8e0b | 234 | timer->_softexpires = ktime_add_ns(timer->_softexpires, ns); |
63ca243b AV |
235 | } |
236 | ||
237 | static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer) | |
238 | { | |
799b64de | 239 | return timer->_expires; |
63ca243b AV |
240 | } |
241 | ||
654c8e0b AV |
242 | static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer) |
243 | { | |
244 | return timer->_softexpires; | |
245 | } | |
246 | ||
63ca243b AV |
247 | static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer) |
248 | { | |
799b64de | 249 | return timer->_expires.tv64; |
63ca243b | 250 | } |
654c8e0b AV |
251 | static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer) |
252 | { | |
253 | return timer->_softexpires.tv64; | |
254 | } | |
63ca243b AV |
255 | |
256 | static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer) | |
257 | { | |
799b64de | 258 | return ktime_to_ns(timer->_expires); |
63ca243b AV |
259 | } |
260 | ||
261 | static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer) | |
262 | { | |
799b64de | 263 | return ktime_sub(timer->_expires, timer->base->get_time()); |
63ca243b AV |
264 | } |
265 | ||
584fb4a7 AV |
266 | #ifdef CONFIG_HIGH_RES_TIMERS |
267 | struct clock_event_device; | |
268 | ||
269 | extern void clock_was_set(void); | |
270 | extern void hres_timers_resume(void); | |
271 | extern void hrtimer_interrupt(struct clock_event_device *dev); | |
272 | ||
2ec02270 AV |
273 | /* |
274 | * In high resolution mode the time reference must be read accurate | |
275 | */ | |
276 | static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer) | |
277 | { | |
278 | return timer->base->get_time(); | |
279 | } | |
280 | ||
281 | static inline int hrtimer_is_hres_active(struct hrtimer *timer) | |
282 | { | |
283 | return timer->base->cpu_base->hres_active; | |
284 | } | |
285 | ||
2075eb8d AV |
286 | extern void hrtimer_peek_ahead_timers(void); |
287 | ||
54cdfdb4 TG |
288 | /* |
289 | * The resolution of the clocks. The resolution value is returned in | |
290 | * the clock_getres() system call to give application programmers an | |
291 | * idea of the (in)accuracy of timers. Timer values are rounded up to | |
292 | * this resolution values. | |
293 | */ | |
151db1fc TB |
294 | # define HIGH_RES_NSEC 1 |
295 | # define KTIME_HIGH_RES (ktime_t) { .tv64 = HIGH_RES_NSEC } | |
296 | # define MONOTONIC_RES_NSEC HIGH_RES_NSEC | |
54cdfdb4 TG |
297 | # define KTIME_MONOTONIC_RES KTIME_HIGH_RES |
298 | ||
299 | #else | |
300 | ||
151db1fc | 301 | # define MONOTONIC_RES_NSEC LOW_RES_NSEC |
54cdfdb4 TG |
302 | # define KTIME_MONOTONIC_RES KTIME_LOW_RES |
303 | ||
becf8b5d TG |
304 | /* |
305 | * clock_was_set() is a NOP for non- high-resolution systems. The | |
306 | * time-sorted order guarantees that a timer does not expire early and | |
307 | * is expired in the next softirq when the clock was advanced. | |
308 | */ | |
54cdfdb4 | 309 | static inline void clock_was_set(void) { } |
2075eb8d | 310 | static inline void hrtimer_peek_ahead_timers(void) { } |
54cdfdb4 | 311 | |
995f054f IM |
312 | static inline void hres_timers_resume(void) { } |
313 | ||
54cdfdb4 TG |
314 | /* |
315 | * In non high resolution mode the time reference is taken from | |
316 | * the base softirq time variable. | |
317 | */ | |
318 | static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer) | |
319 | { | |
320 | return timer->base->softirq_time; | |
321 | } | |
322 | ||
8f4d37ec PZ |
323 | static inline int hrtimer_is_hres_active(struct hrtimer *timer) |
324 | { | |
325 | return 0; | |
326 | } | |
54cdfdb4 TG |
327 | #endif |
328 | ||
d316c57f TG |
329 | extern ktime_t ktime_get(void); |
330 | extern ktime_t ktime_get_real(void); | |
becf8b5d | 331 | |
2e94d1f7 AV |
332 | |
333 | DECLARE_PER_CPU(struct tick_device, tick_cpu_device); | |
2e94d1f7 AV |
334 | |
335 | ||
c0a31329 TG |
336 | /* Exported timer functions: */ |
337 | ||
338 | /* Initialize timers: */ | |
7978672c GA |
339 | extern void hrtimer_init(struct hrtimer *timer, clockid_t which_clock, |
340 | enum hrtimer_mode mode); | |
c0a31329 | 341 | |
237fc6e7 TG |
342 | #ifdef CONFIG_DEBUG_OBJECTS_TIMERS |
343 | extern void hrtimer_init_on_stack(struct hrtimer *timer, clockid_t which_clock, | |
344 | enum hrtimer_mode mode); | |
345 | ||
346 | extern void destroy_hrtimer_on_stack(struct hrtimer *timer); | |
347 | #else | |
348 | static inline void hrtimer_init_on_stack(struct hrtimer *timer, | |
349 | clockid_t which_clock, | |
350 | enum hrtimer_mode mode) | |
351 | { | |
352 | hrtimer_init(timer, which_clock, mode); | |
353 | } | |
354 | static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { } | |
355 | #endif | |
356 | ||
c0a31329 TG |
357 | /* Basic timer operations: */ |
358 | extern int hrtimer_start(struct hrtimer *timer, ktime_t tim, | |
359 | const enum hrtimer_mode mode); | |
da8f2e17 AV |
360 | extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, |
361 | unsigned long range_ns, const enum hrtimer_mode mode); | |
c0a31329 TG |
362 | extern int hrtimer_cancel(struct hrtimer *timer); |
363 | extern int hrtimer_try_to_cancel(struct hrtimer *timer); | |
364 | ||
63ca243b AV |
365 | static inline int hrtimer_start_expires(struct hrtimer *timer, |
366 | enum hrtimer_mode mode) | |
367 | { | |
da8f2e17 AV |
368 | unsigned long delta; |
369 | ktime_t soft, hard; | |
370 | soft = hrtimer_get_softexpires(timer); | |
371 | hard = hrtimer_get_expires(timer); | |
372 | delta = ktime_to_ns(ktime_sub(hard, soft)); | |
4ce105d3 | 373 | return hrtimer_start_range_ns(timer, soft, delta, mode); |
63ca243b AV |
374 | } |
375 | ||
c9cb2e3d TG |
376 | static inline int hrtimer_restart(struct hrtimer *timer) |
377 | { | |
654c8e0b | 378 | return hrtimer_start_expires(timer, HRTIMER_MODE_ABS); |
c9cb2e3d | 379 | } |
c0a31329 TG |
380 | |
381 | /* Query timers: */ | |
382 | extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer); | |
383 | extern int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp); | |
384 | ||
69239749 | 385 | extern ktime_t hrtimer_get_next_event(void); |
69239749 | 386 | |
303e967f TG |
387 | /* |
388 | * A timer is active, when it is enqueued into the rbtree or the callback | |
389 | * function is running. | |
390 | */ | |
c0a31329 TG |
391 | static inline int hrtimer_active(const struct hrtimer *timer) |
392 | { | |
303e967f | 393 | return timer->state != HRTIMER_STATE_INACTIVE; |
c0a31329 TG |
394 | } |
395 | ||
54cdfdb4 TG |
396 | /* |
397 | * Helper function to check, whether the timer is on one of the queues | |
398 | */ | |
399 | static inline int hrtimer_is_queued(struct hrtimer *timer) | |
400 | { | |
401 | return timer->state & | |
402 | (HRTIMER_STATE_ENQUEUED | HRTIMER_STATE_PENDING); | |
403 | } | |
404 | ||
4346f654 OH |
405 | /* |
406 | * Helper function to check, whether the timer is running the callback | |
407 | * function | |
408 | */ | |
409 | static inline int hrtimer_callback_running(struct hrtimer *timer) | |
410 | { | |
411 | return timer->state & HRTIMER_STATE_CALLBACK; | |
412 | } | |
413 | ||
c0a31329 | 414 | /* Forward a hrtimer so it expires after now: */ |
4d672e7a | 415 | extern u64 |
44f21475 | 416 | hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval); |
c0a31329 | 417 | |
5e05ad7d | 418 | /* Forward a hrtimer so it expires after the hrtimer's current now */ |
4d672e7a DL |
419 | static inline u64 hrtimer_forward_now(struct hrtimer *timer, |
420 | ktime_t interval) | |
5e05ad7d DL |
421 | { |
422 | return hrtimer_forward(timer, timer->base->get_time(), interval); | |
423 | } | |
424 | ||
10c94ec1 TG |
425 | /* Precise sleep: */ |
426 | extern long hrtimer_nanosleep(struct timespec *rqtp, | |
080344b9 | 427 | struct timespec __user *rmtp, |
10c94ec1 TG |
428 | const enum hrtimer_mode mode, |
429 | const clockid_t clockid); | |
1711ef38 | 430 | extern long hrtimer_nanosleep_restart(struct restart_block *restart_block); |
10c94ec1 | 431 | |
00362e33 TG |
432 | extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, |
433 | struct task_struct *tsk); | |
434 | ||
654c8e0b AV |
435 | extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta, |
436 | const enum hrtimer_mode mode); | |
7bb67439 AV |
437 | extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode); |
438 | ||
c0a31329 TG |
439 | /* Soft interrupt function to run the hrtimer queues: */ |
440 | extern void hrtimer_run_queues(void); | |
d3d74453 | 441 | extern void hrtimer_run_pending(void); |
c0a31329 TG |
442 | |
443 | /* Bootup initialization: */ | |
444 | extern void __init hrtimers_init(void); | |
445 | ||
79bf2bb3 | 446 | #if BITS_PER_LONG < 64 |
4d672e7a | 447 | extern u64 ktime_divns(const ktime_t kt, s64 div); |
79bf2bb3 | 448 | #else /* BITS_PER_LONG < 64 */ |
4d672e7a | 449 | # define ktime_divns(kt, div) (u64)((kt).tv64 / (div)) |
79bf2bb3 TG |
450 | #endif |
451 | ||
88ad0bf6 IM |
452 | /* Show pending timers: */ |
453 | extern void sysrq_timer_list_show(void); | |
454 | ||
82f67cd9 IM |
455 | /* |
456 | * Timer-statistics info: | |
457 | */ | |
458 | #ifdef CONFIG_TIMER_STATS | |
459 | ||
460 | extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf, | |
c5c061b8 VP |
461 | void *timerf, char *comm, |
462 | unsigned int timer_flag); | |
82f67cd9 IM |
463 | |
464 | static inline void timer_stats_account_hrtimer(struct hrtimer *timer) | |
465 | { | |
466 | timer_stats_update_stats(timer, timer->start_pid, timer->start_site, | |
c5c061b8 | 467 | timer->function, timer->start_comm, 0); |
82f67cd9 IM |
468 | } |
469 | ||
470 | extern void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer, | |
471 | void *addr); | |
472 | ||
473 | static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer) | |
474 | { | |
475 | __timer_stats_hrtimer_set_start_info(timer, __builtin_return_address(0)); | |
476 | } | |
477 | ||
478 | static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer) | |
479 | { | |
480 | timer->start_site = NULL; | |
481 | } | |
482 | #else | |
483 | static inline void timer_stats_account_hrtimer(struct hrtimer *timer) | |
484 | { | |
485 | } | |
486 | ||
487 | static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer) | |
488 | { | |
489 | } | |
490 | ||
491 | static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer) | |
492 | { | |
493 | } | |
494 | #endif | |
495 | ||
c0a31329 | 496 | #endif |