1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define TRACE_SYSTEM timer
5 #if !defined(LTTNG_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define LTTNG_TRACE_TIMER_H
8 #include <probes/lttng-tracepoint-event.h>
10 #ifndef _TRACE_TIMER_DEF_
11 #define _TRACE_TIMER_DEF_
12 #include <linux/hrtimer.h>
13 #include <linux/timer.h>
14 #include <lttng-kernel-version.h>
18 #endif /* _TRACE_TIMER_DEF_ */
20 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
21 #define lttng_ktime_get_tv64(kt) (kt)
22 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
23 #define lttng_ktime_get_tv64(kt) ((kt).tv64)
24 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
26 LTTNG_TRACEPOINT_EVENT_CLASS(timer_class
,
28 TP_PROTO(struct timer_list
*timer
),
33 ctf_integer_hex(void *, timer
, timer
)
38 * timer_init - called when the timer is initialized
39 * @timer: pointer to struct timer_list
41 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_init
,
43 TP_PROTO(struct timer_list
*timer
),
48 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0) || \
49 LTTNG_RHEL_KERNEL_RANGE(3,10,0,957,0,0, 3,11,0,0,0,0))
51 * timer_start - called when the timer is started
52 * @timer: pointer to struct timer_list
53 * @expires: the timers expiry time
54 * @flags: the timers expiry time
56 LTTNG_TRACEPOINT_EVENT(timer_start
,
58 TP_PROTO(struct timer_list
*timer
, unsigned long expires
,
61 TP_ARGS(timer
, expires
, flags
),
64 ctf_integer_hex(void *, timer
, timer
)
65 ctf_integer_hex(void *, function
, timer
->function
)
66 ctf_integer(unsigned long, expires
, expires
)
67 ctf_integer(unsigned long, now
, jiffies
)
68 ctf_integer(unsigned int, flags
, flags
)
71 #else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
73 * timer_start - called when the timer is started
74 * @timer: pointer to struct timer_list
75 * @expires: the timers expiry time
77 LTTNG_TRACEPOINT_EVENT(timer_start
,
79 TP_PROTO(struct timer_list
*timer
, unsigned long expires
),
81 TP_ARGS(timer
, expires
),
84 ctf_integer_hex(void *, timer
, timer
)
85 ctf_integer_hex(void *, function
, timer
->function
)
86 ctf_integer(unsigned long, expires
, expires
)
87 ctf_integer(unsigned long, now
, jiffies
)
90 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
92 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,2,0) || \
93 LTTNG_KERNEL_RANGE(4,19,312, 4,20,0) || \
94 LTTNG_RHEL_KERNEL_RANGE(4,18,0,193,0,0, 4,19,0,0,0,0))
96 * timer_expire_entry - called immediately before the timer callback
97 * @timer: pointer to struct timer_list
99 * Allows to determine the timer latency.
101 LTTNG_TRACEPOINT_EVENT(timer_expire_entry
,
103 TP_PROTO(struct timer_list
*timer
, unsigned long baseclk
),
105 TP_ARGS(timer
, baseclk
),
108 ctf_integer_hex(void *, timer
, timer
)
109 ctf_integer(unsigned long, now
, jiffies
)
110 ctf_integer_hex(void *, function
, timer
->function
)
111 ctf_integer(unsigned long, baseclk
, baseclk
)
116 * timer_expire_entry - called immediately before the timer callback
117 * @timer: pointer to struct timer_list
119 * Allows to determine the timer latency.
121 LTTNG_TRACEPOINT_EVENT(timer_expire_entry
,
123 TP_PROTO(struct timer_list
*timer
),
128 ctf_integer_hex(void *, timer
, timer
)
129 ctf_integer(unsigned long, now
, jiffies
)
130 ctf_integer_hex(void *, function
, timer
->function
)
136 * timer_expire_exit - called immediately after the timer callback returns
137 * @timer: pointer to struct timer_list
139 * When used in combination with the timer_expire_entry tracepoint we can
140 * determine the runtime of the timer callback function.
142 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
143 * be invalid. We solely track the pointer.
145 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_expire_exit
,
147 TP_PROTO(struct timer_list
*timer
),
153 * timer_cancel - called when the timer is canceled
154 * @timer: pointer to struct timer_list
156 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_cancel
,
158 TP_PROTO(struct timer_list
*timer
),
164 * hrtimer_init - called when the hrtimer is initialized
165 * @timer: pointer to struct hrtimer
166 * @clockid: the hrtimers clock
167 * @mode: the hrtimers mode
169 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_init
,
173 TP_PROTO(struct hrtimer
*hrtimer
, clockid_t clockid
,
174 enum hrtimer_mode mode
),
176 TP_ARGS(hrtimer
, clockid
, mode
),
179 ctf_integer_hex(void *, hrtimer
, hrtimer
)
180 ctf_integer(clockid_t
, clockid
, clockid
)
181 ctf_integer(enum hrtimer_mode
, mode
, mode
)
186 * hrtimer_start - called when the hrtimer is started
187 * @timer: pointer to struct hrtimer
189 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,16,0) || \
190 LTTNG_RT_KERNEL_RANGE(4,14,0,0, 4,15,0,0))
191 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start
,
195 TP_PROTO(struct hrtimer
*hrtimer
, enum hrtimer_mode mode
),
197 TP_ARGS(hrtimer
, mode
),
200 ctf_integer_hex(void *, hrtimer
, hrtimer
)
201 ctf_integer_hex(void *, function
, hrtimer
->function
)
202 ctf_integer(s64
, expires
,
203 lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer
)))
204 ctf_integer(s64
, softexpires
,
205 lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer
)))
206 ctf_integer(enum hrtimer_mode
, mode
, mode
)
210 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start
,
214 TP_PROTO(struct hrtimer
*hrtimer
),
219 ctf_integer_hex(void *, hrtimer
, hrtimer
)
220 ctf_integer_hex(void *, function
, hrtimer
->function
)
221 ctf_integer(s64
, expires
,
222 lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer
)))
223 ctf_integer(s64
, softexpires
,
224 lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer
)))
230 * htimmer_expire_entry - called immediately before the hrtimer callback
231 * @timer: pointer to struct hrtimer
232 * @now: pointer to variable which contains current time of the
235 * Allows to determine the timer latency.
237 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_expire_entry
,
239 timer_hrtimer_expire_entry
,
241 TP_PROTO(struct hrtimer
*hrtimer
, ktime_t
*now
),
243 TP_ARGS(hrtimer
, now
),
246 ctf_integer_hex(void *, hrtimer
, hrtimer
)
247 ctf_integer(s64
, now
, lttng_ktime_get_tv64(*now
))
248 ctf_integer_hex(void *, function
, hrtimer
->function
)
252 LTTNG_TRACEPOINT_EVENT_CLASS(timer_hrtimer_class
,
254 TP_PROTO(struct hrtimer
*hrtimer
),
259 ctf_integer_hex(void *, hrtimer
, hrtimer
)
264 * hrtimer_expire_exit - called immediately after the hrtimer callback returns
265 * @timer: pointer to struct hrtimer
267 * When used in combination with the hrtimer_expire_entry tracepoint we can
268 * determine the runtime of the callback function.
270 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class
, hrtimer_expire_exit
,
272 timer_hrtimer_expire_exit
,
274 TP_PROTO(struct hrtimer
*hrtimer
),
280 * hrtimer_cancel - called when the hrtimer is canceled
281 * @hrtimer: pointer to struct hrtimer
283 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class
, hrtimer_cancel
,
285 timer_hrtimer_cancel
,
287 TP_PROTO(struct hrtimer
*hrtimer
),
293 * itimer_state - called when itimer is started or canceled
294 * @which: name of the interval timer
295 * @value: the itimers value, itimer is canceled if value->it_value is
296 * zero, otherwise it is started
297 * @expires: the itimers expiry time
299 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,5,0))
300 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state
,
304 TP_PROTO(int which
, const struct itimerspec64
*const value
,
305 unsigned long long expires
),
307 TP_ARGS(which
, value
, expires
),
310 ctf_integer(int, which
, which
)
311 ctf_integer(unsigned long long, expires
, expires
)
312 ctf_integer(long, value_sec
, value
->it_value
.tv_sec
)
313 ctf_integer(long, value_nsec
, value
->it_value
.tv_nsec
)
314 ctf_integer(long, interval_sec
, value
->it_interval
.tv_sec
)
315 ctf_integer(long, interval_nsec
, value
->it_interval
.tv_nsec
)
318 #elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0))
319 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state
,
323 TP_PROTO(int which
, const struct itimerval
*const value
,
324 unsigned long long expires
),
326 TP_ARGS(which
, value
, expires
),
329 ctf_integer(int, which
, which
)
330 ctf_integer(unsigned long long, expires
, expires
)
331 ctf_integer(long, value_sec
, value
->it_value
.tv_sec
)
332 ctf_integer(long, value_usec
, value
->it_value
.tv_usec
)
333 ctf_integer(long, interval_sec
, value
->it_interval
.tv_sec
)
334 ctf_integer(long, interval_usec
, value
->it_interval
.tv_usec
)
337 #else /* if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
338 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state
,
342 TP_PROTO(int which
, const struct itimerval
*const value
,
345 TP_ARGS(which
, value
, expires
),
348 ctf_integer(int, which
, which
)
349 ctf_integer(cputime_t
, expires
, expires
)
350 ctf_integer(long, value_sec
, value
->it_value
.tv_sec
)
351 ctf_integer(long, value_usec
, value
->it_value
.tv_usec
)
352 ctf_integer(long, interval_sec
, value
->it_interval
.tv_sec
)
353 ctf_integer(long, interval_usec
, value
->it_interval
.tv_usec
)
356 #endif /* #else (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
359 * itimer_expire - called when itimer expires
360 * @which: type of the interval timer
361 * @pid: pid of the process which owns the timer
362 * @now: current time, used to calculate the latency of itimer
364 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0))
365 LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire
,
369 TP_PROTO(int which
, struct pid
*pid
, unsigned long long now
),
371 TP_ARGS(which
, pid
, now
),
374 ctf_integer(int , which
, which
)
375 ctf_integer(pid_t
, pid
, pid_nr(pid
))
376 ctf_integer(unsigned long long, now
, now
)
379 #else /* if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
380 LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire
,
384 TP_PROTO(int which
, struct pid
*pid
, cputime_t now
),
386 TP_ARGS(which
, pid
, now
),
389 ctf_integer(int , which
, which
)
390 ctf_integer(pid_t
, pid
, pid_nr(pid
))
391 ctf_integer(cputime_t
, now
, now
)
394 #endif /* #else (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
396 #endif /* LTTNG_TRACE_TIMER_H */
398 /* This part must be outside protection */
399 #include <probes/define_trace.h>