6b13f685e
김민수
BSP 최초 추가
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
|
#ifndef _LINUX_HRTIMER_H
#define _LINUX_HRTIMER_H
#include <linux/rbtree.h>
#include <linux/ktime.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/percpu.h>
#include <linux/timer.h>
#include <linux/timerqueue.h>
struct hrtimer_clock_base;
struct hrtimer_cpu_base;
enum hrtimer_mode {
HRTIMER_MODE_ABS = 0x0,
HRTIMER_MODE_REL = 0x1,
HRTIMER_MODE_PINNED = 0x02,
HRTIMER_MODE_ABS_PINNED = 0x02,
HRTIMER_MODE_REL_PINNED = 0x03,
};
enum hrtimer_restart {
HRTIMER_NORESTART,
HRTIMER_RESTART,
};
#define HRTIMER_STATE_INACTIVE 0x00
#define HRTIMER_STATE_ENQUEUED 0x01
#define HRTIMER_STATE_CALLBACK 0x02
#define HRTIMER_STATE_MIGRATE 0x04
struct hrtimer {
struct timerqueue_node node;
ktime_t _softexpires;
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
unsigned long state;
#ifdef CONFIG_TIMER_STATS
int start_pid;
void *start_site;
char start_comm[16];
#endif
};
struct hrtimer_sleeper {
struct hrtimer timer;
struct task_struct *task;
};
struct hrtimer_clock_base {
struct hrtimer_cpu_base *cpu_base;
int index;
clockid_t clockid;
struct timerqueue_head active;
ktime_t resolution;
ktime_t (*get_time)(void);
ktime_t softirq_time;
ktime_t offset;
};
enum hrtimer_base_type {
HRTIMER_BASE_MONOTONIC,
HRTIMER_BASE_REALTIME,
HRTIMER_BASE_BOOTTIME,
HRTIMER_BASE_TAI,
HRTIMER_MAX_CLOCK_BASES,
};
struct hrtimer_cpu_base {
raw_spinlock_t lock;
unsigned int active_bases;
unsigned int clock_was_set;
#ifdef CONFIG_HIGH_RES_TIMERS
ktime_t expires_next;
int hres_active;
int hang_detected;
unsigned long nr_events;
unsigned long nr_retries;
unsigned long nr_hangs;
ktime_t max_hang_time;
#endif
struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES];
};
static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time)
{
timer->node.expires = time;
timer->_softexpires = time;
}
static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta)
{
timer->_softexpires = time;
timer->node.expires = ktime_add_safe(time, delta);
}
static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta)
{
timer->_softexpires = time;
timer->node.expires = ktime_add_safe(time, ns_to_ktime(delta));
}
static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64)
{
timer->node.expires.tv64 = tv64;
timer->_softexpires.tv64 = tv64;
}
static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time)
{
timer->node.expires = ktime_add_safe(timer->node.expires, time);
timer->_softexpires = ktime_add_safe(timer->_softexpires, time);
}
static inline void hrtimer_add_expires_ns(struct hrtimer *timer, u64 ns)
{
timer->node.expires = ktime_add_ns(timer->node.expires, ns);
timer->_softexpires = ktime_add_ns(timer->_softexpires, ns);
}
static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer)
{
return timer->node.expires;
}
static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer)
{
return timer->_softexpires;
}
static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer)
{
return timer->node.expires.tv64;
}
static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer)
{
return timer->_softexpires.tv64;
}
static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer)
{
return ktime_to_ns(timer->node.expires);
}
static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer)
{
return ktime_sub(timer->node.expires, timer->base->get_time());
}
#ifdef CONFIG_HIGH_RES_TIMERS
struct clock_event_device;
extern void hrtimer_interrupt(struct clock_event_device *dev);
static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer)
{
return timer->base->get_time();
}
static inline int hrtimer_is_hres_active(struct hrtimer *timer)
{
return timer->base->cpu_base->hres_active;
}
extern void hrtimer_peek_ahead_timers(void);
# define HIGH_RES_NSEC 1
# define KTIME_HIGH_RES (ktime_t) { .tv64 = HIGH_RES_NSEC }
# define MONOTONIC_RES_NSEC HIGH_RES_NSEC
# define KTIME_MONOTONIC_RES KTIME_HIGH_RES
extern void clock_was_set_delayed(void);
#else
# define MONOTONIC_RES_NSEC LOW_RES_NSEC
# define KTIME_MONOTONIC_RES KTIME_LOW_RES
static inline void hrtimer_peek_ahead_timers(void) { }
static inline ktime_t hrtimer_cb_get_time(struct hrtimer *timer)
{
return timer->base->softirq_time;
}
static inline int hrtimer_is_hres_active(struct hrtimer *timer)
{
return 0;
}
static inline void clock_was_set_delayed(void) { }
#endif
extern void clock_was_set(void);
#ifdef CONFIG_TIMERFD
extern void timerfd_clock_was_set(void);
#else
static inline void timerfd_clock_was_set(void) { }
#endif
extern void hrtimers_resume(void);
extern ktime_t ktime_get(void);
extern ktime_t ktime_get_real(void);
extern ktime_t ktime_get_boottime(void);
extern ktime_t ktime_get_monotonic_offset(void);
extern ktime_t ktime_get_clocktai(void);
extern ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot,
ktime_t *offs_tai);
DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
extern void hrtimer_init(struct hrtimer *timer, clockid_t which_clock,
enum hrtimer_mode mode);
#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
extern void hrtimer_init_on_stack(struct hrtimer *timer, clockid_t which_clock,
enum hrtimer_mode mode);
extern void destroy_hrtimer_on_stack(struct hrtimer *timer);
#else
static inline void hrtimer_init_on_stack(struct hrtimer *timer,
clockid_t which_clock,
enum hrtimer_mode mode)
{
hrtimer_init(timer, which_clock, mode);
}
static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { }
#endif
extern int hrtimer_start(struct hrtimer *timer, ktime_t tim,
const enum hrtimer_mode mode);
extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long range_ns, const enum hrtimer_mode mode);
extern int
__hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long delta_ns,
const enum hrtimer_mode mode, int wakeup);
extern int hrtimer_cancel(struct hrtimer *timer);
extern int hrtimer_try_to_cancel(struct hrtimer *timer);
static inline int hrtimer_start_expires(struct hrtimer *timer,
enum hrtimer_mode mode)
{
unsigned long delta;
ktime_t soft, hard;
soft = hrtimer_get_softexpires(timer);
hard = hrtimer_get_expires(timer);
delta = ktime_to_ns(ktime_sub(hard, soft));
return hrtimer_start_range_ns(timer, soft, delta, mode);
}
static inline int hrtimer_restart(struct hrtimer *timer)
{
return hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer);
extern int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp);
extern ktime_t hrtimer_get_next_event(void);
static inline int hrtimer_active(const struct hrtimer *timer)
{
return timer->state != HRTIMER_STATE_INACTIVE;
}
static inline int hrtimer_is_queued(struct hrtimer *timer)
{
return timer->state & HRTIMER_STATE_ENQUEUED;
}
static inline int hrtimer_callback_running(struct hrtimer *timer)
{
return timer->state & HRTIMER_STATE_CALLBACK;
}
extern u64
hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval);
static inline u64 hrtimer_forward_now(struct hrtimer *timer,
ktime_t interval)
{
return hrtimer_forward(timer, timer->base->get_time(), interval);
}
extern long hrtimer_nanosleep(struct timespec *rqtp,
struct timespec __user *rmtp,
const enum hrtimer_mode mode,
const clockid_t clockid);
extern long hrtimer_nanosleep_restart(struct restart_block *restart_block);
extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl,
struct task_struct *tsk);
extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta,
const enum hrtimer_mode mode);
extern int schedule_hrtimeout_range_clock(ktime_t *expires,
unsigned long delta, const enum hrtimer_mode mode, int clock);
extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode);
extern void hrtimer_run_queues(void);
extern void hrtimer_run_pending(void);
extern void __init hrtimers_init(void);
#if BITS_PER_LONG < 64
extern u64 ktime_divns(const ktime_t kt, s64 div);
#else /* BITS_PER_LONG < 64 */
# define ktime_divns(kt, div) (u64)((kt).tv64 / (div))
#endif
extern void sysrq_timer_list_show(void);
#endif
|