1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM timer 4 5 #if !defined(_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_TIMER_H 7 8 #include <linux/tracepoint.h> 9 #include <linux/hrtimer.h> 10 #include <linux/timer.h> 11 12 DECLARE_EVENT_CLASS(timer_class, 13 14 TP_PROTO(struct timer_list *timer), 15 16 TP_ARGS(timer), 17 18 TP_STRUCT__entry( 19 __field( void *, timer ) 20 ), 21 22 TP_fast_assign( 23 __entry->timer = timer; 24 ), 25 26 TP_printk("timer=%p", __entry->timer) 27 ); 28 29 /** 30 * timer_init - called when the timer is initialized 31 * @timer: pointer to struct timer_list 32 */ 33 DEFINE_EVENT(timer_class, timer_init, 34 35 TP_PROTO(struct timer_list *timer), 36 37 TP_ARGS(timer) 38 ); 39 40 #define decode_timer_flags(flags) \ 41 __print_flags(flags, "|", \ 42 { TIMER_MIGRATING, "M" }, \ 43 { TIMER_DEFERRABLE, "D" }, \ 44 { TIMER_PINNED, "P" }, \ 45 { TIMER_IRQSAFE, "I" }) 46 47 /** 48 * timer_start - called when the timer is started 49 * @timer: pointer to struct timer_list 50 * @expires: the timers expiry time 51 */ 52 TRACE_EVENT(timer_start, 53 54 TP_PROTO(struct timer_list *timer, 55 unsigned long expires, 56 unsigned int flags), 57 58 TP_ARGS(timer, expires, flags), 59 60 TP_STRUCT__entry( 61 __field( void *, timer ) 62 __field( void *, function ) 63 __field( unsigned long, expires ) 64 __field( unsigned long, now ) 65 __field( unsigned int, flags ) 66 ), 67 68 TP_fast_assign( 69 __entry->timer = timer; 70 __entry->function = timer->function; 71 __entry->expires = expires; 72 __entry->now = jiffies; 73 __entry->flags = flags; 74 ), 75 76 TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld] cpu=%u idx=%u flags=%s", 77 __entry->timer, __entry->function, __entry->expires, 78 (long)__entry->expires - __entry->now, 79 __entry->flags & TIMER_CPUMASK, 80 __entry->flags >> TIMER_ARRAYSHIFT, 81 decode_timer_flags(__entry->flags & TIMER_TRACE_FLAGMASK)) 82 ); 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 TRACE_EVENT(timer_expire_entry, 91 92 TP_PROTO(struct timer_list *timer), 93 94 TP_ARGS(timer), 95 96 TP_STRUCT__entry( 97 __field( void *, timer ) 98 __field( unsigned long, now ) 99 __field( void *, function) 100 ), 101 102 TP_fast_assign( 103 __entry->timer = timer; 104 __entry->now = jiffies; 105 __entry->function = timer->function; 106 ), 107 108 TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now) 109 ); 110 111 /** 112 * timer_expire_exit - called immediately after the timer callback returns 113 * @timer: pointer to struct timer_list 114 * 115 * When used in combination with the timer_expire_entry tracepoint we can 116 * determine the runtime of the timer callback function. 117 * 118 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might 119 * be invalid. We solely track the pointer. 120 */ 121 DEFINE_EVENT(timer_class, timer_expire_exit, 122 123 TP_PROTO(struct timer_list *timer), 124 125 TP_ARGS(timer) 126 ); 127 128 /** 129 * timer_cancel - called when the timer is canceled 130 * @timer: pointer to struct timer_list 131 */ 132 DEFINE_EVENT(timer_class, timer_cancel, 133 134 TP_PROTO(struct timer_list *timer), 135 136 TP_ARGS(timer) 137 ); 138 139 #define decode_clockid(type) \ 140 __print_symbolic(type, \ 141 { CLOCK_REALTIME, "CLOCK_REALTIME" }, \ 142 { CLOCK_MONOTONIC, "CLOCK_MONOTONIC" }, \ 143 { CLOCK_BOOTTIME, "CLOCK_BOOTTIME" }, \ 144 { CLOCK_TAI, "CLOCK_TAI" }) 145 146 #define decode_hrtimer_mode(mode) \ 147 __print_symbolic(mode, \ 148 { HRTIMER_MODE_ABS, "ABS" }, \ 149 { HRTIMER_MODE_REL, "REL" }, \ 150 { HRTIMER_MODE_ABS_PINNED, "ABS|PINNED" }, \ 151 { HRTIMER_MODE_REL_PINNED, "REL|PINNED" }, \ 152 { HRTIMER_MODE_ABS_SOFT, "ABS|SOFT" }, \ 153 { HRTIMER_MODE_REL_SOFT, "REL|SOFT" }, \ 154 { HRTIMER_MODE_ABS_PINNED_SOFT, "ABS|PINNED|SOFT" }, \ 155 { HRTIMER_MODE_REL_PINNED_SOFT, "REL|PINNED|SOFT" }) 156 157 /** 158 * hrtimer_init - called when the hrtimer is initialized 159 * @hrtimer: pointer to struct hrtimer 160 * @clockid: the hrtimers clock 161 * @mode: the hrtimers mode 162 */ 163 TRACE_EVENT(hrtimer_init, 164 165 TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid, 166 enum hrtimer_mode mode), 167 168 TP_ARGS(hrtimer, clockid, mode), 169 170 TP_STRUCT__entry( 171 __field( void *, hrtimer ) 172 __field( clockid_t, clockid ) 173 __field( enum hrtimer_mode, mode ) 174 ), 175 176 TP_fast_assign( 177 __entry->hrtimer = hrtimer; 178 __entry->clockid = clockid; 179 __entry->mode = mode; 180 ), 181 182 TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer, 183 decode_clockid(__entry->clockid), 184 decode_hrtimer_mode(__entry->mode)) 185 ); 186 187 /** 188 * hrtimer_start - called when the hrtimer is started 189 * @hrtimer: pointer to struct hrtimer 190 */ 191 TRACE_EVENT(hrtimer_start, 192 193 TP_PROTO(struct hrtimer *hrtimer, enum hrtimer_mode mode), 194 195 TP_ARGS(hrtimer, mode), 196 197 TP_STRUCT__entry( 198 __field( void *, hrtimer ) 199 __field( void *, function ) 200 __field( s64, expires ) 201 __field( s64, softexpires ) 202 __field( enum hrtimer_mode, mode ) 203 ), 204 205 TP_fast_assign( 206 __entry->hrtimer = hrtimer; 207 __entry->function = hrtimer->function; 208 __entry->expires = hrtimer_get_expires(hrtimer); 209 __entry->softexpires = hrtimer_get_softexpires(hrtimer); 210 __entry->mode = mode; 211 ), 212 213 TP_printk("hrtimer=%p function=%pf expires=%llu softexpires=%llu " 214 "mode=%s", __entry->hrtimer, __entry->function, 215 (unsigned long long) __entry->expires, 216 (unsigned long long) __entry->softexpires, 217 decode_hrtimer_mode(__entry->mode)) 218 ); 219 220 /** 221 * hrtimer_expire_entry - called immediately before the hrtimer callback 222 * @hrtimer: pointer to struct hrtimer 223 * @now: pointer to variable which contains current time of the 224 * timers base. 225 * 226 * Allows to determine the timer latency. 227 */ 228 TRACE_EVENT(hrtimer_expire_entry, 229 230 TP_PROTO(struct hrtimer *hrtimer, ktime_t *now), 231 232 TP_ARGS(hrtimer, now), 233 234 TP_STRUCT__entry( 235 __field( void *, hrtimer ) 236 __field( s64, now ) 237 __field( void *, function) 238 ), 239 240 TP_fast_assign( 241 __entry->hrtimer = hrtimer; 242 __entry->now = *now; 243 __entry->function = hrtimer->function; 244 ), 245 246 TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function, 247 (unsigned long long) __entry->now) 248 ); 249 250 DECLARE_EVENT_CLASS(hrtimer_class, 251 252 TP_PROTO(struct hrtimer *hrtimer), 253 254 TP_ARGS(hrtimer), 255 256 TP_STRUCT__entry( 257 __field( void *, hrtimer ) 258 ), 259 260 TP_fast_assign( 261 __entry->hrtimer = hrtimer; 262 ), 263 264 TP_printk("hrtimer=%p", __entry->hrtimer) 265 ); 266 267 /** 268 * hrtimer_expire_exit - called immediately after the hrtimer callback returns 269 * @hrtimer: pointer to struct hrtimer 270 * 271 * When used in combination with the hrtimer_expire_entry tracepoint we can 272 * determine the runtime of the callback function. 273 */ 274 DEFINE_EVENT(hrtimer_class, hrtimer_expire_exit, 275 276 TP_PROTO(struct hrtimer *hrtimer), 277 278 TP_ARGS(hrtimer) 279 ); 280 281 /** 282 * hrtimer_cancel - called when the hrtimer is canceled 283 * @hrtimer: pointer to struct hrtimer 284 */ 285 DEFINE_EVENT(hrtimer_class, hrtimer_cancel, 286 287 TP_PROTO(struct hrtimer *hrtimer), 288 289 TP_ARGS(hrtimer) 290 ); 291 292 /** 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 298 */ 299 TRACE_EVENT(itimer_state, 300 301 TP_PROTO(int which, const struct itimerval *const value, 302 unsigned long long expires), 303 304 TP_ARGS(which, value, expires), 305 306 TP_STRUCT__entry( 307 __field( int, which ) 308 __field( unsigned long long, expires ) 309 __field( long, value_sec ) 310 __field( long, value_usec ) 311 __field( long, interval_sec ) 312 __field( long, interval_usec ) 313 ), 314 315 TP_fast_assign( 316 __entry->which = which; 317 __entry->expires = expires; 318 __entry->value_sec = value->it_value.tv_sec; 319 __entry->value_usec = value->it_value.tv_usec; 320 __entry->interval_sec = value->it_interval.tv_sec; 321 __entry->interval_usec = value->it_interval.tv_usec; 322 ), 323 324 TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld", 325 __entry->which, __entry->expires, 326 __entry->value_sec, __entry->value_usec, 327 __entry->interval_sec, __entry->interval_usec) 328 ); 329 330 /** 331 * itimer_expire - called when itimer expires 332 * @which: type of the interval timer 333 * @pid: pid of the process which owns the timer 334 * @now: current time, used to calculate the latency of itimer 335 */ 336 TRACE_EVENT(itimer_expire, 337 338 TP_PROTO(int which, struct pid *pid, unsigned long long now), 339 340 TP_ARGS(which, pid, now), 341 342 TP_STRUCT__entry( 343 __field( int , which ) 344 __field( pid_t, pid ) 345 __field( unsigned long long, now ) 346 ), 347 348 TP_fast_assign( 349 __entry->which = which; 350 __entry->now = now; 351 __entry->pid = pid_nr(pid); 352 ), 353 354 TP_printk("which=%d pid=%d now=%llu", __entry->which, 355 (int) __entry->pid, __entry->now) 356 ); 357 358 #ifdef CONFIG_NO_HZ_COMMON 359 360 #define TICK_DEP_NAMES \ 361 tick_dep_mask_name(NONE) \ 362 tick_dep_name(POSIX_TIMER) \ 363 tick_dep_name(PERF_EVENTS) \ 364 tick_dep_name(SCHED) \ 365 tick_dep_name_end(CLOCK_UNSTABLE) 366 367 #undef tick_dep_name 368 #undef tick_dep_mask_name 369 #undef tick_dep_name_end 370 371 /* The MASK will convert to their bits and they need to be processed too */ 372 #define tick_dep_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \ 373 TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 374 #define tick_dep_name_end(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \ 375 TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 376 /* NONE only has a mask defined for it */ 377 #define tick_dep_mask_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 378 379 TICK_DEP_NAMES 380 381 #undef tick_dep_name 382 #undef tick_dep_mask_name 383 #undef tick_dep_name_end 384 385 #define tick_dep_name(sdep) { TICK_DEP_MASK_##sdep, #sdep }, 386 #define tick_dep_mask_name(sdep) { TICK_DEP_MASK_##sdep, #sdep }, 387 #define tick_dep_name_end(sdep) { TICK_DEP_MASK_##sdep, #sdep } 388 389 #define show_tick_dep_name(val) \ 390 __print_symbolic(val, TICK_DEP_NAMES) 391 392 TRACE_EVENT(tick_stop, 393 394 TP_PROTO(int success, int dependency), 395 396 TP_ARGS(success, dependency), 397 398 TP_STRUCT__entry( 399 __field( int , success ) 400 __field( int , dependency ) 401 ), 402 403 TP_fast_assign( 404 __entry->success = success; 405 __entry->dependency = dependency; 406 ), 407 408 TP_printk("success=%d dependency=%s", __entry->success, \ 409 show_tick_dep_name(__entry->dependency)) 410 ); 411 #endif 412 413 #endif /* _TRACE_TIMER_H */ 414 415 /* This part must be outside protection */ 416 #include <trace/define_trace.h> 417