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=%ps 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, unsigned long baseclk), 93 94 TP_ARGS(timer, baseclk), 95 96 TP_STRUCT__entry( 97 __field( void *, timer ) 98 __field( unsigned long, now ) 99 __field( void *, function) 100 __field( unsigned long, baseclk ) 101 ), 102 103 TP_fast_assign( 104 __entry->timer = timer; 105 __entry->now = jiffies; 106 __entry->function = timer->function; 107 __entry->baseclk = baseclk; 108 ), 109 110 TP_printk("timer=%p function=%ps now=%lu baseclk=%lu", 111 __entry->timer, __entry->function, __entry->now, 112 __entry->baseclk) 113 ); 114 115 /** 116 * timer_expire_exit - called immediately after the timer callback returns 117 * @timer: pointer to struct timer_list 118 * 119 * When used in combination with the timer_expire_entry tracepoint we can 120 * determine the runtime of the timer callback function. 121 * 122 * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might 123 * be invalid. We solely track the pointer. 124 */ 125 DEFINE_EVENT(timer_class, timer_expire_exit, 126 127 TP_PROTO(struct timer_list *timer), 128 129 TP_ARGS(timer) 130 ); 131 132 /** 133 * timer_cancel - called when the timer is canceled 134 * @timer: pointer to struct timer_list 135 */ 136 DEFINE_EVENT(timer_class, timer_cancel, 137 138 TP_PROTO(struct timer_list *timer), 139 140 TP_ARGS(timer) 141 ); 142 143 #define decode_clockid(type) \ 144 __print_symbolic(type, \ 145 { CLOCK_REALTIME, "CLOCK_REALTIME" }, \ 146 { CLOCK_MONOTONIC, "CLOCK_MONOTONIC" }, \ 147 { CLOCK_BOOTTIME, "CLOCK_BOOTTIME" }, \ 148 { CLOCK_TAI, "CLOCK_TAI" }) 149 150 #define decode_hrtimer_mode(mode) \ 151 __print_symbolic(mode, \ 152 { HRTIMER_MODE_ABS, "ABS" }, \ 153 { HRTIMER_MODE_REL, "REL" }, \ 154 { HRTIMER_MODE_ABS_PINNED, "ABS|PINNED" }, \ 155 { HRTIMER_MODE_REL_PINNED, "REL|PINNED" }, \ 156 { HRTIMER_MODE_ABS_SOFT, "ABS|SOFT" }, \ 157 { HRTIMER_MODE_REL_SOFT, "REL|SOFT" }, \ 158 { HRTIMER_MODE_ABS_PINNED_SOFT, "ABS|PINNED|SOFT" }, \ 159 { HRTIMER_MODE_REL_PINNED_SOFT, "REL|PINNED|SOFT" }) 160 161 /** 162 * hrtimer_init - called when the hrtimer is initialized 163 * @hrtimer: pointer to struct hrtimer 164 * @clockid: the hrtimers clock 165 * @mode: the hrtimers mode 166 */ 167 TRACE_EVENT(hrtimer_init, 168 169 TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid, 170 enum hrtimer_mode mode), 171 172 TP_ARGS(hrtimer, clockid, mode), 173 174 TP_STRUCT__entry( 175 __field( void *, hrtimer ) 176 __field( clockid_t, clockid ) 177 __field( enum hrtimer_mode, mode ) 178 ), 179 180 TP_fast_assign( 181 __entry->hrtimer = hrtimer; 182 __entry->clockid = clockid; 183 __entry->mode = mode; 184 ), 185 186 TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer, 187 decode_clockid(__entry->clockid), 188 decode_hrtimer_mode(__entry->mode)) 189 ); 190 191 /** 192 * hrtimer_start - called when the hrtimer is started 193 * @hrtimer: pointer to struct hrtimer 194 */ 195 TRACE_EVENT(hrtimer_start, 196 197 TP_PROTO(struct hrtimer *hrtimer, enum hrtimer_mode mode), 198 199 TP_ARGS(hrtimer, mode), 200 201 TP_STRUCT__entry( 202 __field( void *, hrtimer ) 203 __field( void *, function ) 204 __field( s64, expires ) 205 __field( s64, softexpires ) 206 __field( enum hrtimer_mode, mode ) 207 ), 208 209 TP_fast_assign( 210 __entry->hrtimer = hrtimer; 211 __entry->function = hrtimer->function; 212 __entry->expires = hrtimer_get_expires(hrtimer); 213 __entry->softexpires = hrtimer_get_softexpires(hrtimer); 214 __entry->mode = mode; 215 ), 216 217 TP_printk("hrtimer=%p function=%ps expires=%llu softexpires=%llu " 218 "mode=%s", __entry->hrtimer, __entry->function, 219 (unsigned long long) __entry->expires, 220 (unsigned long long) __entry->softexpires, 221 decode_hrtimer_mode(__entry->mode)) 222 ); 223 224 /** 225 * hrtimer_expire_entry - called immediately before the hrtimer callback 226 * @hrtimer: pointer to struct hrtimer 227 * @now: pointer to variable which contains current time of the 228 * timers base. 229 * 230 * Allows to determine the timer latency. 231 */ 232 TRACE_EVENT(hrtimer_expire_entry, 233 234 TP_PROTO(struct hrtimer *hrtimer, ktime_t *now), 235 236 TP_ARGS(hrtimer, now), 237 238 TP_STRUCT__entry( 239 __field( void *, hrtimer ) 240 __field( s64, now ) 241 __field( void *, function) 242 ), 243 244 TP_fast_assign( 245 __entry->hrtimer = hrtimer; 246 __entry->now = *now; 247 __entry->function = hrtimer->function; 248 ), 249 250 TP_printk("hrtimer=%p function=%ps now=%llu", 251 __entry->hrtimer, __entry->function, 252 (unsigned long long) __entry->now) 253 ); 254 255 DECLARE_EVENT_CLASS(hrtimer_class, 256 257 TP_PROTO(struct hrtimer *hrtimer), 258 259 TP_ARGS(hrtimer), 260 261 TP_STRUCT__entry( 262 __field( void *, hrtimer ) 263 ), 264 265 TP_fast_assign( 266 __entry->hrtimer = hrtimer; 267 ), 268 269 TP_printk("hrtimer=%p", __entry->hrtimer) 270 ); 271 272 /** 273 * hrtimer_expire_exit - called immediately after the hrtimer callback returns 274 * @hrtimer: pointer to struct hrtimer 275 * 276 * When used in combination with the hrtimer_expire_entry tracepoint we can 277 * determine the runtime of the callback function. 278 */ 279 DEFINE_EVENT(hrtimer_class, hrtimer_expire_exit, 280 281 TP_PROTO(struct hrtimer *hrtimer), 282 283 TP_ARGS(hrtimer) 284 ); 285 286 /** 287 * hrtimer_cancel - called when the hrtimer is canceled 288 * @hrtimer: pointer to struct hrtimer 289 */ 290 DEFINE_EVENT(hrtimer_class, hrtimer_cancel, 291 292 TP_PROTO(struct hrtimer *hrtimer), 293 294 TP_ARGS(hrtimer) 295 ); 296 297 /** 298 * itimer_state - called when itimer is started or canceled 299 * @which: name of the interval timer 300 * @value: the itimers value, itimer is canceled if value->it_value is 301 * zero, otherwise it is started 302 * @expires: the itimers expiry time 303 */ 304 TRACE_EVENT(itimer_state, 305 306 TP_PROTO(int which, const struct itimerval *const value, 307 unsigned long long expires), 308 309 TP_ARGS(which, value, expires), 310 311 TP_STRUCT__entry( 312 __field( int, which ) 313 __field( unsigned long long, expires ) 314 __field( long, value_sec ) 315 __field( long, value_usec ) 316 __field( long, interval_sec ) 317 __field( long, interval_usec ) 318 ), 319 320 TP_fast_assign( 321 __entry->which = which; 322 __entry->expires = expires; 323 __entry->value_sec = value->it_value.tv_sec; 324 __entry->value_usec = value->it_value.tv_usec; 325 __entry->interval_sec = value->it_interval.tv_sec; 326 __entry->interval_usec = value->it_interval.tv_usec; 327 ), 328 329 TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld", 330 __entry->which, __entry->expires, 331 __entry->value_sec, __entry->value_usec, 332 __entry->interval_sec, __entry->interval_usec) 333 ); 334 335 /** 336 * itimer_expire - called when itimer expires 337 * @which: type of the interval timer 338 * @pid: pid of the process which owns the timer 339 * @now: current time, used to calculate the latency of itimer 340 */ 341 TRACE_EVENT(itimer_expire, 342 343 TP_PROTO(int which, struct pid *pid, unsigned long long now), 344 345 TP_ARGS(which, pid, now), 346 347 TP_STRUCT__entry( 348 __field( int , which ) 349 __field( pid_t, pid ) 350 __field( unsigned long long, now ) 351 ), 352 353 TP_fast_assign( 354 __entry->which = which; 355 __entry->now = now; 356 __entry->pid = pid_nr(pid); 357 ), 358 359 TP_printk("which=%d pid=%d now=%llu", __entry->which, 360 (int) __entry->pid, __entry->now) 361 ); 362 363 #ifdef CONFIG_NO_HZ_COMMON 364 365 #define TICK_DEP_NAMES \ 366 tick_dep_mask_name(NONE) \ 367 tick_dep_name(POSIX_TIMER) \ 368 tick_dep_name(PERF_EVENTS) \ 369 tick_dep_name(SCHED) \ 370 tick_dep_name_end(CLOCK_UNSTABLE) 371 372 #undef tick_dep_name 373 #undef tick_dep_mask_name 374 #undef tick_dep_name_end 375 376 /* The MASK will convert to their bits and they need to be processed too */ 377 #define tick_dep_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \ 378 TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 379 #define tick_dep_name_end(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \ 380 TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 381 /* NONE only has a mask defined for it */ 382 #define tick_dep_mask_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep); 383 384 TICK_DEP_NAMES 385 386 #undef tick_dep_name 387 #undef tick_dep_mask_name 388 #undef tick_dep_name_end 389 390 #define tick_dep_name(sdep) { TICK_DEP_MASK_##sdep, #sdep }, 391 #define tick_dep_mask_name(sdep) { TICK_DEP_MASK_##sdep, #sdep }, 392 #define tick_dep_name_end(sdep) { TICK_DEP_MASK_##sdep, #sdep } 393 394 #define show_tick_dep_name(val) \ 395 __print_symbolic(val, TICK_DEP_NAMES) 396 397 TRACE_EVENT(tick_stop, 398 399 TP_PROTO(int success, int dependency), 400 401 TP_ARGS(success, dependency), 402 403 TP_STRUCT__entry( 404 __field( int , success ) 405 __field( int , dependency ) 406 ), 407 408 TP_fast_assign( 409 __entry->success = success; 410 __entry->dependency = dependency; 411 ), 412 413 TP_printk("success=%d dependency=%s", __entry->success, \ 414 show_tick_dep_name(__entry->dependency)) 415 ); 416 #endif 417 418 #endif /* _TRACE_TIMER_H */ 419 420 /* This part must be outside protection */ 421 #include <trace/define_trace.h> 422
