2 #define TRACE_SYSTEM timer
4 #if !defined(_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/tracepoint.h>
9 #ifndef _TRACE_TIMER_DEF_
10 #define _TRACE_TIMER_DEF_
11 #include <linux/hrtimer.h>
12 #include <linux/timer.h>
16 #endif /* _TRACE_TIMER_DEF_ */
18 DECLARE_EVENT_CLASS(timer_class,
20 TP_PROTO(struct timer_list *timer),
25 __field( void *, timer )
29 tp_assign(timer, timer)
32 TP_printk("timer=%p", __entry->timer)
36 * timer_init - called when the timer is initialized
37 * @timer: pointer to struct timer_list
39 DEFINE_EVENT(timer_class, timer_init,
41 TP_PROTO(struct timer_list *timer),
47 * timer_start - called when the timer is started
48 * @timer: pointer to struct timer_list
49 * @expires: the timers expiry time
51 TRACE_EVENT(timer_start,
53 TP_PROTO(struct timer_list *timer, unsigned long expires),
55 TP_ARGS(timer, expires),
58 __field( void *, timer )
59 __field( void *, function )
60 __field( unsigned long, expires )
61 __field( unsigned long, now )
65 tp_assign(timer, timer)
66 tp_assign(function, timer->function)
67 tp_assign(expires, expires)
68 tp_assign(now, jiffies)
71 TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld]",
72 __entry->timer, __entry->function, __entry->expires,
73 (long)__entry->expires - __entry->now)
77 * timer_expire_entry - called immediately before the timer callback
78 * @timer: pointer to struct timer_list
80 * Allows to determine the timer latency.
82 TRACE_EVENT(timer_expire_entry,
84 TP_PROTO(struct timer_list *timer),
89 __field( void *, timer )
90 __field( unsigned long, now )
91 __field( void *, function)
95 tp_assign(timer, timer)
96 tp_assign(now, jiffies)
97 tp_assign(function, timer->function)
100 TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now)
104 * timer_expire_exit - called immediately after the timer callback returns
105 * @timer: pointer to struct timer_list
107 * When used in combination with the timer_expire_entry tracepoint we can
108 * determine the runtime of the timer callback function.
110 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
111 * be invalid. We solely track the pointer.
113 DEFINE_EVENT(timer_class, timer_expire_exit,
115 TP_PROTO(struct timer_list *timer),
121 * timer_cancel - called when the timer is canceled
122 * @timer: pointer to struct timer_list
124 DEFINE_EVENT(timer_class, timer_cancel,
126 TP_PROTO(struct timer_list *timer),
132 * hrtimer_init - called when the hrtimer is initialized
133 * @timer: pointer to struct hrtimer
134 * @clockid: the hrtimers clock
135 * @mode: the hrtimers mode
137 TRACE_EVENT(hrtimer_init,
139 TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid,
140 enum hrtimer_mode mode),
142 TP_ARGS(hrtimer, clockid, mode),
145 __field( void *, hrtimer )
146 __field( clockid_t, clockid )
147 __field( enum hrtimer_mode, mode )
151 tp_assign(hrtimer, hrtimer)
152 tp_assign(clockid, clockid)
153 tp_assign(mode, mode)
156 TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer,
157 __entry->clockid == CLOCK_REALTIME ?
158 "CLOCK_REALTIME" : "CLOCK_MONOTONIC",
159 __entry->mode == HRTIMER_MODE_ABS ?
160 "HRTIMER_MODE_ABS" : "HRTIMER_MODE_REL")
164 * hrtimer_start - called when the hrtimer is started
165 * @timer: pointer to struct hrtimer
167 TRACE_EVENT(hrtimer_start,
169 TP_PROTO(struct hrtimer *hrtimer),
174 __field( void *, hrtimer )
175 __field( void *, function )
176 __field( s64, expires )
177 __field( s64, softexpires )
181 tp_assign(hrtimer, hrtimer)
182 tp_assign(function, hrtimer->function)
183 tp_assign(expires, hrtimer_get_expires(hrtimer).tv64)
184 tp_assign(softexpires, hrtimer_get_softexpires(hrtimer).tv64)
187 TP_printk("hrtimer=%p function=%pf expires=%llu softexpires=%llu",
188 __entry->hrtimer, __entry->function,
189 (unsigned long long)ktime_to_ns((ktime_t) {
190 .tv64 = __entry->expires }),
191 (unsigned long long)ktime_to_ns((ktime_t) {
192 .tv64 = __entry->softexpires }))
196 * htimmer_expire_entry - called immediately before the hrtimer callback
197 * @timer: pointer to struct hrtimer
198 * @now: pointer to variable which contains current time of the
201 * Allows to determine the timer latency.
203 TRACE_EVENT(hrtimer_expire_entry,
205 TP_PROTO(struct hrtimer *hrtimer, ktime_t *now),
207 TP_ARGS(hrtimer, now),
210 __field( void *, hrtimer )
212 __field( void *, function)
216 tp_assign(hrtimer, hrtimer)
217 tp_assign(now, now->tv64)
218 tp_assign(function, hrtimer->function)
221 TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function,
222 (unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now }))
225 DECLARE_EVENT_CLASS(hrtimer_class,
227 TP_PROTO(struct hrtimer *hrtimer),
232 __field( void *, hrtimer )
236 tp_assign(hrtimer, hrtimer)
239 TP_printk("hrtimer=%p", __entry->hrtimer)
243 * hrtimer_expire_exit - called immediately after the hrtimer callback returns
244 * @timer: pointer to struct hrtimer
246 * When used in combination with the hrtimer_expire_entry tracepoint we can
247 * determine the runtime of the callback function.
249 DEFINE_EVENT(hrtimer_class, hrtimer_expire_exit,
251 TP_PROTO(struct hrtimer *hrtimer),
257 * hrtimer_cancel - called when the hrtimer is canceled
258 * @hrtimer: pointer to struct hrtimer
260 DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
262 TP_PROTO(struct hrtimer *hrtimer),
268 * itimer_state - called when itimer is started or canceled
269 * @which: name of the interval timer
270 * @value: the itimers value, itimer is canceled if value->it_value is
271 * zero, otherwise it is started
272 * @expires: the itimers expiry time
274 TRACE_EVENT(itimer_state,
276 TP_PROTO(int which, const struct itimerval *const value,
279 TP_ARGS(which, value, expires),
282 __field( int, which )
283 __field( cputime_t, expires )
284 __field( long, value_sec )
285 __field( long, value_usec )
286 __field( long, interval_sec )
287 __field( long, interval_usec )
291 tp_assign(which, which)
292 tp_assign(expires, expires)
293 tp_assign(value_sec, value->it_value.tv_sec)
294 tp_assign(value_usec, value->it_value.tv_usec)
295 tp_assign(interval_sec, value->it_interval.tv_sec)
296 tp_assign(interval_usec, value->it_interval.tv_usec)
299 TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
300 __entry->which, (unsigned long long)__entry->expires,
301 __entry->value_sec, __entry->value_usec,
302 __entry->interval_sec, __entry->interval_usec)
306 * itimer_expire - called when itimer expires
307 * @which: type of the interval timer
308 * @pid: pid of the process which owns the timer
309 * @now: current time, used to calculate the latency of itimer
311 TRACE_EVENT(itimer_expire,
313 TP_PROTO(int which, struct pid *pid, cputime_t now),
315 TP_ARGS(which, pid, now),
318 __field( int , which )
319 __field( pid_t, pid )
320 __field( cputime_t, now )
324 tp_assign(which, which)
326 tp_assign(pid, pid_nr(pid))
329 TP_printk("which=%d pid=%d now=%llu", __entry->which,
330 (int) __entry->pid, (unsigned long long)__entry->now)
333 #endif /* _TRACE_TIMER_H */
335 /* This part must be outside protection */
336 #include "../../../probes/define_trace.h"