2 #define TRACE_SYSTEM timer
4 #if !defined(LTTNG_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define LTTNG_TRACE_TIMER_H
7 #include <probes/lttng-tracepoint-event.h>
9 #ifndef _TRACE_TIMER_DEF_
10 #define _TRACE_TIMER_DEF_
11 #include <linux/hrtimer.h>
12 #include <linux/timer.h>
13 #include <linux/version.h>
17 #endif /* _TRACE_TIMER_DEF_ */
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)) */
25 LTTNG_TRACEPOINT_EVENT_CLASS(timer_class
,
27 TP_PROTO(struct timer_list
*timer
),
32 ctf_integer_hex(void *, timer
, timer
)
37 * timer_init - called when the timer is initialized
38 * @timer: pointer to struct timer_list
40 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_init
,
42 TP_PROTO(struct timer_list
*timer
),
47 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
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
54 LTTNG_TRACEPOINT_EVENT(timer_start
,
56 TP_PROTO(struct timer_list
*timer
, unsigned long expires
,
59 TP_ARGS(timer
, expires
, flags
),
62 ctf_integer_hex(void *, timer
, timer
)
63 ctf_integer_hex(void *, function
, timer
->function
)
64 ctf_integer(unsigned long, expires
, expires
)
65 ctf_integer(unsigned long, now
, jiffies
)
66 ctf_integer(unsigned int, flags
, flags
)
69 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
71 * timer_start - called when the timer is started
72 * @timer: pointer to struct timer_list
73 * @expires: the timers expiry time
75 LTTNG_TRACEPOINT_EVENT(timer_start
,
77 TP_PROTO(struct timer_list
*timer
, unsigned long expires
),
79 TP_ARGS(timer
, expires
),
82 ctf_integer_hex(void *, timer
, timer
)
83 ctf_integer_hex(void *, function
, timer
->function
)
84 ctf_integer(unsigned long, expires
, expires
)
85 ctf_integer(unsigned long, now
, jiffies
)
88 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
91 * timer_expire_entry - called immediately before the timer callback
92 * @timer: pointer to struct timer_list
94 * Allows to determine the timer latency.
96 LTTNG_TRACEPOINT_EVENT(timer_expire_entry
,
98 TP_PROTO(struct timer_list
*timer
),
103 ctf_integer_hex(void *, timer
, timer
)
104 ctf_integer(unsigned long, now
, jiffies
)
105 ctf_integer_hex(void *, function
, timer
->function
)
110 * timer_expire_exit - called immediately after the timer callback returns
111 * @timer: pointer to struct timer_list
113 * When used in combination with the timer_expire_entry tracepoint we can
114 * determine the runtime of the timer callback function.
116 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
117 * be invalid. We solely track the pointer.
119 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_expire_exit
,
121 TP_PROTO(struct timer_list
*timer
),
127 * timer_cancel - called when the timer is canceled
128 * @timer: pointer to struct timer_list
130 LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class
, timer_cancel
,
132 TP_PROTO(struct timer_list
*timer
),
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
143 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_init
,
147 TP_PROTO(struct hrtimer
*hrtimer
, clockid_t clockid
,
148 enum hrtimer_mode mode
),
150 TP_ARGS(hrtimer
, clockid
, mode
),
153 ctf_integer_hex(void *, hrtimer
, hrtimer
)
154 ctf_integer(clockid_t
, clockid
, clockid
)
155 ctf_integer(enum hrtimer_mode
, mode
, mode
)
160 * hrtimer_start - called when the hrtimer is started
161 * @timer: pointer to struct hrtimer
163 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0) || \
164 LTTNG_RT_KERNEL_RANGE(4,14,0,0, 4,15,0,0))
165 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start
,
169 TP_PROTO(struct hrtimer
*hrtimer
, enum hrtimer_mode mode
),
171 TP_ARGS(hrtimer
, mode
),
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
)
184 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start
,
188 TP_PROTO(struct hrtimer
*hrtimer
),
193 ctf_integer_hex(void *, hrtimer
, hrtimer
)
194 ctf_integer_hex(void *, function
, hrtimer
->function
)
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
)))
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
209 * Allows to determine the timer latency.
211 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_expire_entry
,
213 timer_hrtimer_expire_entry
,
215 TP_PROTO(struct hrtimer
*hrtimer
, ktime_t
*now
),
217 TP_ARGS(hrtimer
, now
),
220 ctf_integer_hex(void *, hrtimer
, hrtimer
)
221 ctf_integer(s64
, now
, lttng_ktime_get_tv64(*now
))
222 ctf_integer_hex(void *, function
, hrtimer
->function
)
226 LTTNG_TRACEPOINT_EVENT_CLASS(timer_hrtimer_class
,
228 TP_PROTO(struct hrtimer
*hrtimer
),
233 ctf_integer_hex(void *, hrtimer
, hrtimer
)
238 * hrtimer_expire_exit - called immediately after the hrtimer callback returns
239 * @timer: pointer to struct hrtimer
241 * When used in combination with the hrtimer_expire_entry tracepoint we can
242 * determine the runtime of the callback function.
244 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class
, hrtimer_expire_exit
,
246 timer_hrtimer_expire_exit
,
248 TP_PROTO(struct hrtimer
*hrtimer
),
254 * hrtimer_cancel - called when the hrtimer is canceled
255 * @hrtimer: pointer to struct hrtimer
257 LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class
, hrtimer_cancel
,
259 timer_hrtimer_cancel
,
261 TP_PROTO(struct hrtimer
*hrtimer
),
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
273 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
274 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state
,
278 TP_PROTO(int which
, const struct itimerval
*const value
,
279 unsigned long long expires
),
281 TP_ARGS(which
, value
, expires
),
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
)
292 #else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
293 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state
,
297 TP_PROTO(int which
, const struct itimerval
*const value
,
300 TP_ARGS(which
, value
, expires
),
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
)
311 #endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
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
319 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
320 LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire
,
324 TP_PROTO(int which
, struct pid
*pid
, unsigned long long now
),
326 TP_ARGS(which
, pid
, now
),
329 ctf_integer(int , which
, which
)
330 ctf_integer(pid_t
, pid
, pid_nr(pid
))
331 ctf_integer(unsigned long long, now
, now
)
334 #else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
335 LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire
,
339 TP_PROTO(int which
, struct pid
*pid
, cputime_t now
),
341 TP_ARGS(which
, pid
, now
),
344 ctf_integer(int , which
, which
)
345 ctf_integer(pid_t
, pid
, pid_nr(pid
))
346 ctf_integer(cputime_t
, now
, now
)
349 #endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
351 #endif /* LTTNG_TRACE_TIMER_H */
353 /* This part must be outside protection */
354 #include <probes/define_trace.h>