| 1 | #undef TRACE_SYSTEM |
| 2 | #define TRACE_SYSTEM timer |
| 3 | |
| 4 | #if !defined(LTTNG_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ) |
| 5 | #define LTTNG_TRACE_TIMER_H |
| 6 | |
| 7 | #include "../../../probes/lttng-tracepoint-event.h" |
| 8 | |
| 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> |
| 14 | |
| 15 | struct timer_list; |
| 16 | |
| 17 | #endif /* _TRACE_TIMER_DEF_ */ |
| 18 | |
| 19 | LTTNG_TRACEPOINT_EVENT_CLASS(timer_class, |
| 20 | |
| 21 | TP_PROTO(struct timer_list *timer), |
| 22 | |
| 23 | TP_ARGS(timer), |
| 24 | |
| 25 | TP_FIELDS( |
| 26 | ctf_integer(void *, timer, timer) |
| 27 | ) |
| 28 | ) |
| 29 | |
| 30 | /** |
| 31 | * timer_init - called when the timer is initialized |
| 32 | * @timer: pointer to struct timer_list |
| 33 | */ |
| 34 | LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_init, |
| 35 | |
| 36 | TP_PROTO(struct timer_list *timer), |
| 37 | |
| 38 | TP_ARGS(timer) |
| 39 | ) |
| 40 | |
| 41 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) |
| 42 | /** |
| 43 | * timer_start - called when the timer is started |
| 44 | * @timer: pointer to struct timer_list |
| 45 | * @expires: the timers expiry time |
| 46 | * @flags: the timers expiry time |
| 47 | */ |
| 48 | LTTNG_TRACEPOINT_EVENT(timer_start, |
| 49 | |
| 50 | TP_PROTO(struct timer_list *timer, unsigned long expires, |
| 51 | unsigned int flags), |
| 52 | |
| 53 | TP_ARGS(timer, expires, flags), |
| 54 | |
| 55 | TP_FIELDS( |
| 56 | ctf_integer(void *, timer, timer) |
| 57 | ctf_integer(void *, function, timer->function) |
| 58 | ctf_integer(unsigned long, expires, expires) |
| 59 | ctf_integer(unsigned long, now, jiffies) |
| 60 | ctf_integer(unsigned int, flags, flags) |
| 61 | ) |
| 62 | ) |
| 63 | #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */ |
| 64 | /** |
| 65 | * timer_start - called when the timer is started |
| 66 | * @timer: pointer to struct timer_list |
| 67 | * @expires: the timers expiry time |
| 68 | */ |
| 69 | LTTNG_TRACEPOINT_EVENT(timer_start, |
| 70 | |
| 71 | TP_PROTO(struct timer_list *timer, unsigned long expires), |
| 72 | |
| 73 | TP_ARGS(timer, expires), |
| 74 | |
| 75 | TP_FIELDS( |
| 76 | ctf_integer(void *, timer, timer) |
| 77 | ctf_integer(void *, function, timer->function) |
| 78 | ctf_integer(unsigned long, expires, expires) |
| 79 | ctf_integer(unsigned long, now, jiffies) |
| 80 | ) |
| 81 | ) |
| 82 | #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */ |
| 83 | |
| 84 | /** |
| 85 | * timer_expire_entry - called immediately before the timer callback |
| 86 | * @timer: pointer to struct timer_list |
| 87 | * |
| 88 | * Allows to determine the timer latency. |
| 89 | */ |
| 90 | LTTNG_TRACEPOINT_EVENT(timer_expire_entry, |
| 91 | |
| 92 | TP_PROTO(struct timer_list *timer), |
| 93 | |
| 94 | TP_ARGS(timer), |
| 95 | |
| 96 | TP_FIELDS( |
| 97 | ctf_integer(void *, timer, timer) |
| 98 | ctf_integer(unsigned long, now, jiffies) |
| 99 | ctf_integer(void *, function, timer->function) |
| 100 | ) |
| 101 | ) |
| 102 | |
| 103 | /** |
| 104 | * timer_expire_exit - called immediately after the timer callback returns |
| 105 | * @timer: pointer to struct timer_list |
| 106 | * |
| 107 | * When used in combination with the timer_expire_entry tracepoint we can |
| 108 | * determine the runtime of the timer callback function. |
| 109 | * |
| 110 | * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might |
| 111 | * be invalid. We solely track the pointer. |
| 112 | */ |
| 113 | LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_expire_exit, |
| 114 | |
| 115 | TP_PROTO(struct timer_list *timer), |
| 116 | |
| 117 | TP_ARGS(timer) |
| 118 | ) |
| 119 | |
| 120 | /** |
| 121 | * timer_cancel - called when the timer is canceled |
| 122 | * @timer: pointer to struct timer_list |
| 123 | */ |
| 124 | LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_cancel, |
| 125 | |
| 126 | TP_PROTO(struct timer_list *timer), |
| 127 | |
| 128 | TP_ARGS(timer) |
| 129 | ) |
| 130 | |
| 131 | /** |
| 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 |
| 136 | */ |
| 137 | LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_init, |
| 138 | |
| 139 | timer_hrtimer_init, |
| 140 | |
| 141 | TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid, |
| 142 | enum hrtimer_mode mode), |
| 143 | |
| 144 | TP_ARGS(hrtimer, clockid, mode), |
| 145 | |
| 146 | TP_FIELDS( |
| 147 | ctf_integer(void *, hrtimer, hrtimer) |
| 148 | ctf_integer(clockid_t, clockid, clockid) |
| 149 | ctf_integer(enum hrtimer_mode, mode, mode) |
| 150 | ) |
| 151 | ) |
| 152 | |
| 153 | /** |
| 154 | * hrtimer_start - called when the hrtimer is started |
| 155 | * @timer: pointer to struct hrtimer |
| 156 | */ |
| 157 | LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start, |
| 158 | |
| 159 | timer_hrtimer_start, |
| 160 | |
| 161 | TP_PROTO(struct hrtimer *hrtimer), |
| 162 | |
| 163 | TP_ARGS(hrtimer), |
| 164 | |
| 165 | TP_FIELDS( |
| 166 | ctf_integer(void *, hrtimer, hrtimer) |
| 167 | ctf_integer(void *, function, hrtimer->function) |
| 168 | ctf_integer(s64, expires, hrtimer_get_expires(hrtimer).tv64) |
| 169 | ctf_integer(s64, softexpires, hrtimer_get_softexpires(hrtimer).tv64) |
| 170 | ) |
| 171 | ) |
| 172 | |
| 173 | /** |
| 174 | * htimmer_expire_entry - called immediately before the hrtimer callback |
| 175 | * @timer: pointer to struct hrtimer |
| 176 | * @now: pointer to variable which contains current time of the |
| 177 | * timers base. |
| 178 | * |
| 179 | * Allows to determine the timer latency. |
| 180 | */ |
| 181 | LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_expire_entry, |
| 182 | |
| 183 | timer_hrtimer_expire_entry, |
| 184 | |
| 185 | TP_PROTO(struct hrtimer *hrtimer, ktime_t *now), |
| 186 | |
| 187 | TP_ARGS(hrtimer, now), |
| 188 | |
| 189 | TP_FIELDS( |
| 190 | ctf_integer(void *, hrtimer, hrtimer) |
| 191 | ctf_integer(s64, now, now->tv64) |
| 192 | ctf_integer(void *, function, hrtimer->function) |
| 193 | ) |
| 194 | ) |
| 195 | |
| 196 | LTTNG_TRACEPOINT_EVENT_CLASS(timer_hrtimer_class, |
| 197 | |
| 198 | TP_PROTO(struct hrtimer *hrtimer), |
| 199 | |
| 200 | TP_ARGS(hrtimer), |
| 201 | |
| 202 | TP_FIELDS( |
| 203 | ctf_integer(void *, hrtimer, hrtimer) |
| 204 | ) |
| 205 | ) |
| 206 | |
| 207 | /** |
| 208 | * hrtimer_expire_exit - called immediately after the hrtimer callback returns |
| 209 | * @timer: pointer to struct hrtimer |
| 210 | * |
| 211 | * When used in combination with the hrtimer_expire_entry tracepoint we can |
| 212 | * determine the runtime of the callback function. |
| 213 | */ |
| 214 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class, hrtimer_expire_exit, |
| 215 | |
| 216 | timer_hrtimer_expire_exit, |
| 217 | |
| 218 | TP_PROTO(struct hrtimer *hrtimer), |
| 219 | |
| 220 | TP_ARGS(hrtimer) |
| 221 | ) |
| 222 | |
| 223 | /** |
| 224 | * hrtimer_cancel - called when the hrtimer is canceled |
| 225 | * @hrtimer: pointer to struct hrtimer |
| 226 | */ |
| 227 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class, hrtimer_cancel, |
| 228 | |
| 229 | timer_hrtimer_cancel, |
| 230 | |
| 231 | TP_PROTO(struct hrtimer *hrtimer), |
| 232 | |
| 233 | TP_ARGS(hrtimer) |
| 234 | ) |
| 235 | |
| 236 | /** |
| 237 | * itimer_state - called when itimer is started or canceled |
| 238 | * @which: name of the interval timer |
| 239 | * @value: the itimers value, itimer is canceled if value->it_value is |
| 240 | * zero, otherwise it is started |
| 241 | * @expires: the itimers expiry time |
| 242 | */ |
| 243 | LTTNG_TRACEPOINT_EVENT_MAP(itimer_state, |
| 244 | |
| 245 | timer_itimer_state, |
| 246 | |
| 247 | TP_PROTO(int which, const struct itimerval *const value, |
| 248 | cputime_t expires), |
| 249 | |
| 250 | TP_ARGS(which, value, expires), |
| 251 | |
| 252 | TP_FIELDS( |
| 253 | ctf_integer(int, which, which) |
| 254 | ctf_integer(cputime_t, expires, expires) |
| 255 | ctf_integer(long, value_sec, value->it_value.tv_sec) |
| 256 | ctf_integer(long, value_usec, value->it_value.tv_usec) |
| 257 | ctf_integer(long, interval_sec, value->it_interval.tv_sec) |
| 258 | ctf_integer(long, interval_usec, value->it_interval.tv_usec) |
| 259 | ) |
| 260 | ) |
| 261 | |
| 262 | /** |
| 263 | * itimer_expire - called when itimer expires |
| 264 | * @which: type of the interval timer |
| 265 | * @pid: pid of the process which owns the timer |
| 266 | * @now: current time, used to calculate the latency of itimer |
| 267 | */ |
| 268 | LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire, |
| 269 | |
| 270 | timer_itimer_expire, |
| 271 | |
| 272 | TP_PROTO(int which, struct pid *pid, cputime_t now), |
| 273 | |
| 274 | TP_ARGS(which, pid, now), |
| 275 | |
| 276 | TP_FIELDS( |
| 277 | ctf_integer(int , which, which) |
| 278 | ctf_integer(pid_t, pid, pid_nr(pid)) |
| 279 | ctf_integer(cputime_t, now, now) |
| 280 | ) |
| 281 | ) |
| 282 | |
| 283 | #endif /* LTTNG_TRACE_TIMER_H */ |
| 284 | |
| 285 | /* This part must be outside protection */ |
| 286 | #include "../../../probes/define_trace.h" |