Fix: update timer instrumentation on 4.16 and 4.14-rt
[lttng-modules.git] / instrumentation / events / lttng-module / timer.h
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1#undef TRACE_SYSTEM
2#define TRACE_SYSTEM timer
3
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4#if !defined(LTTNG_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
5#define LTTNG_TRACE_TIMER_H
e54456f5 6
6ec43db8 7#include <probes/lttng-tracepoint-event.h>
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8
9#ifndef _TRACE_TIMER_DEF_
10#define _TRACE_TIMER_DEF_
11#include <linux/hrtimer.h>
12#include <linux/timer.h>
32328e6c 13#include <linux/version.h>
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14
15struct timer_list;
16
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17#endif /* _TRACE_TIMER_DEF_ */
18
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19#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
20#define lttng_ktime_get_tv64(kt) (kt)
21#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
22#define lttng_ktime_get_tv64(kt) ((kt).tv64)
23#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
24
3bc29f0a 25LTTNG_TRACEPOINT_EVENT_CLASS(timer_class,
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26
27 TP_PROTO(struct timer_list *timer),
28
29 TP_ARGS(timer),
30
f127e61e 31 TP_FIELDS(
fa91fcac 32 ctf_integer_hex(void *, timer, timer)
f127e61e 33 )
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34)
35
36/**
37 * timer_init - called when the timer is initialized
38 * @timer: pointer to struct timer_list
39 */
3bc29f0a 40LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_init,
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41
42 TP_PROTO(struct timer_list *timer),
43
44 TP_ARGS(timer)
45)
46
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47#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
48/**
49 * timer_start - called when the timer is started
50 * @timer: pointer to struct timer_list
51 * @expires: the timers expiry time
52 * @flags: the timers expiry time
53 */
54LTTNG_TRACEPOINT_EVENT(timer_start,
55
56 TP_PROTO(struct timer_list *timer, unsigned long expires,
57 unsigned int flags),
58
59 TP_ARGS(timer, expires, flags),
60
61 TP_FIELDS(
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62 ctf_integer_hex(void *, timer, timer)
63 ctf_integer_hex(void *, function, timer->function)
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64 ctf_integer(unsigned long, expires, expires)
65 ctf_integer(unsigned long, now, jiffies)
66 ctf_integer(unsigned int, flags, flags)
67 )
68)
69#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
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70/**
71 * timer_start - called when the timer is started
72 * @timer: pointer to struct timer_list
73 * @expires: the timers expiry time
74 */
3bc29f0a 75LTTNG_TRACEPOINT_EVENT(timer_start,
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76
77 TP_PROTO(struct timer_list *timer, unsigned long expires),
78
79 TP_ARGS(timer, expires),
80
f127e61e 81 TP_FIELDS(
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82 ctf_integer_hex(void *, timer, timer)
83 ctf_integer_hex(void *, function, timer->function)
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84 ctf_integer(unsigned long, expires, expires)
85 ctf_integer(unsigned long, now, jiffies)
86 )
e54456f5 87)
32328e6c 88#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
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89
90/**
91 * timer_expire_entry - called immediately before the timer callback
92 * @timer: pointer to struct timer_list
93 *
94 * Allows to determine the timer latency.
95 */
3bc29f0a 96LTTNG_TRACEPOINT_EVENT(timer_expire_entry,
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97
98 TP_PROTO(struct timer_list *timer),
99
100 TP_ARGS(timer),
101
f127e61e 102 TP_FIELDS(
fa91fcac 103 ctf_integer_hex(void *, timer, timer)
f127e61e 104 ctf_integer(unsigned long, now, jiffies)
fa91fcac 105 ctf_integer_hex(void *, function, timer->function)
f127e61e 106 )
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107)
108
109/**
110 * timer_expire_exit - called immediately after the timer callback returns
111 * @timer: pointer to struct timer_list
112 *
113 * When used in combination with the timer_expire_entry tracepoint we can
114 * determine the runtime of the timer callback function.
115 *
116 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
117 * be invalid. We solely track the pointer.
118 */
3bc29f0a 119LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_expire_exit,
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120
121 TP_PROTO(struct timer_list *timer),
122
123 TP_ARGS(timer)
124)
125
126/**
127 * timer_cancel - called when the timer is canceled
128 * @timer: pointer to struct timer_list
129 */
3bc29f0a 130LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_cancel,
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131
132 TP_PROTO(struct timer_list *timer),
133
134 TP_ARGS(timer)
135)
136
137/**
138 * hrtimer_init - called when the hrtimer is initialized
139 * @timer: pointer to struct hrtimer
140 * @clockid: the hrtimers clock
141 * @mode: the hrtimers mode
142 */
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143LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_init,
144
145 timer_hrtimer_init,
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146
147 TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid,
148 enum hrtimer_mode mode),
149
150 TP_ARGS(hrtimer, clockid, mode),
151
f127e61e 152 TP_FIELDS(
fa91fcac 153 ctf_integer_hex(void *, hrtimer, hrtimer)
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154 ctf_integer(clockid_t, clockid, clockid)
155 ctf_integer(enum hrtimer_mode, mode, mode)
156 )
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157)
158
159/**
160 * hrtimer_start - called when the hrtimer is started
161 * @timer: pointer to struct hrtimer
162 */
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163#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0) || \
164 LTTNG_RT_KERNEL_RANGE(4,14,0,0, 4,15,0,0))
165LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start,
166
167 timer_hrtimer_start,
168
169 TP_PROTO(struct hrtimer *hrtimer, enum hrtimer_mode mode),
170
171 TP_ARGS(hrtimer, mode),
172
173 TP_FIELDS(
174 ctf_integer_hex(void *, hrtimer, hrtimer)
175 ctf_integer_hex(void *, function, hrtimer->function)
176 ctf_integer(s64, expires,
177 lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer)))
178 ctf_integer(s64, softexpires,
179 lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer)))
180 ctf_integer(enum hrtimer_mode, mode, mode)
181 )
182)
183#else
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184LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start,
185
186 timer_hrtimer_start,
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187
188 TP_PROTO(struct hrtimer *hrtimer),
189
190 TP_ARGS(hrtimer),
191
f127e61e 192 TP_FIELDS(
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193 ctf_integer_hex(void *, hrtimer, hrtimer)
194 ctf_integer_hex(void *, function, hrtimer->function)
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195 ctf_integer(s64, expires,
196 lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer)))
197 ctf_integer(s64, softexpires,
198 lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer)))
f127e61e 199 )
e54456f5 200)
562860aa 201#endif
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202
203/**
204 * htimmer_expire_entry - called immediately before the hrtimer callback
205 * @timer: pointer to struct hrtimer
206 * @now: pointer to variable which contains current time of the
207 * timers base.
208 *
209 * Allows to determine the timer latency.
210 */
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211LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_expire_entry,
212
213 timer_hrtimer_expire_entry,
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214
215 TP_PROTO(struct hrtimer *hrtimer, ktime_t *now),
216
217 TP_ARGS(hrtimer, now),
218
f127e61e 219 TP_FIELDS(
fa91fcac 220 ctf_integer_hex(void *, hrtimer, hrtimer)
507143bc 221 ctf_integer(s64, now, lttng_ktime_get_tv64(*now))
fa91fcac 222 ctf_integer_hex(void *, function, hrtimer->function)
f127e61e 223 )
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224)
225
9bbf98da 226LTTNG_TRACEPOINT_EVENT_CLASS(timer_hrtimer_class,
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227
228 TP_PROTO(struct hrtimer *hrtimer),
229
230 TP_ARGS(hrtimer),
231
f127e61e 232 TP_FIELDS(
fa91fcac 233 ctf_integer_hex(void *, hrtimer, hrtimer)
f127e61e 234 )
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235)
236
237/**
238 * hrtimer_expire_exit - called immediately after the hrtimer callback returns
239 * @timer: pointer to struct hrtimer
240 *
241 * When used in combination with the hrtimer_expire_entry tracepoint we can
242 * determine the runtime of the callback function.
243 */
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244LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class, hrtimer_expire_exit,
245
246 timer_hrtimer_expire_exit,
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247
248 TP_PROTO(struct hrtimer *hrtimer),
249
250 TP_ARGS(hrtimer)
251)
252
253/**
254 * hrtimer_cancel - called when the hrtimer is canceled
255 * @hrtimer: pointer to struct hrtimer
256 */
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257LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class, hrtimer_cancel,
258
259 timer_hrtimer_cancel,
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260
261 TP_PROTO(struct hrtimer *hrtimer),
262
263 TP_ARGS(hrtimer)
264)
265
266/**
267 * itimer_state - called when itimer is started or canceled
268 * @which: name of the interval timer
269 * @value: the itimers value, itimer is canceled if value->it_value is
270 * zero, otherwise it is started
271 * @expires: the itimers expiry time
272 */
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273#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
274LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
275
276 timer_itimer_state,
277
278 TP_PROTO(int which, const struct itimerval *const value,
279 unsigned long long expires),
280
281 TP_ARGS(which, value, expires),
282
283 TP_FIELDS(
284 ctf_integer(int, which, which)
285 ctf_integer(unsigned long long, expires, expires)
286 ctf_integer(long, value_sec, value->it_value.tv_sec)
287 ctf_integer(long, value_usec, value->it_value.tv_usec)
288 ctf_integer(long, interval_sec, value->it_interval.tv_sec)
289 ctf_integer(long, interval_usec, value->it_interval.tv_usec)
290 )
291)
292#else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
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293LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
294
295 timer_itimer_state,
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296
297 TP_PROTO(int which, const struct itimerval *const value,
298 cputime_t expires),
299
300 TP_ARGS(which, value, expires),
301
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302 TP_FIELDS(
303 ctf_integer(int, which, which)
304 ctf_integer(cputime_t, expires, expires)
305 ctf_integer(long, value_sec, value->it_value.tv_sec)
306 ctf_integer(long, value_usec, value->it_value.tv_usec)
307 ctf_integer(long, interval_sec, value->it_interval.tv_sec)
308 ctf_integer(long, interval_usec, value->it_interval.tv_usec)
309 )
e54456f5 310)
678dd1c8 311#endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
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312
313/**
314 * itimer_expire - called when itimer expires
315 * @which: type of the interval timer
316 * @pid: pid of the process which owns the timer
317 * @now: current time, used to calculate the latency of itimer
318 */
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319#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
320LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire,
321
322 timer_itimer_expire,
323
324 TP_PROTO(int which, struct pid *pid, unsigned long long now),
325
326 TP_ARGS(which, pid, now),
327
328 TP_FIELDS(
329 ctf_integer(int , which, which)
330 ctf_integer(pid_t, pid, pid_nr(pid))
331 ctf_integer(unsigned long long, now, now)
332 )
333)
334#else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
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335LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire,
336
337 timer_itimer_expire,
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338
339 TP_PROTO(int which, struct pid *pid, cputime_t now),
340
341 TP_ARGS(which, pid, now),
342
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343 TP_FIELDS(
344 ctf_integer(int , which, which)
345 ctf_integer(pid_t, pid, pid_nr(pid))
346 ctf_integer(cputime_t, now, now)
347 )
e54456f5 348)
678dd1c8 349#endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
e54456f5 350
3bc29f0a 351#endif /* LTTNG_TRACE_TIMER_H */
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352
353/* This part must be outside protection */
6ec43db8 354#include <probes/define_trace.h>
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