instrumentation/events/lttng-module/rcu.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM rcu
   4
   5 #if !defined(LTTNG_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define LTTNG_TRACE_RCU_H
   7
   8 #include <probes/lttng-tracepoint-event.h>
   9 #include <linux/version.h>
  10
  11 /*
  12  * Tracepoint for start/end markers used for utilization calculations.
  13  * By convention, the string is of the following forms:
  14  *
  15  * "Start <activity>" -- Mark the start of the specified activity,
  16  *                       such as "context switch".  Nesting is permitted.
  17  * "End <activity>" -- Mark the end of the specified activity.
  18  *
  19  * An "@" character within "<activity>" is a comment character: Data
  20  * reduction scripts will ignore the "@" and the remainder of the line.
  21  */
  22 LTTNG_TRACEPOINT_EVENT(rcu_utilization,
  23
  24 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
  25         TP_PROTO(const char *s),
  26 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  27         TP_PROTO(char *s),
  28 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  29
  30         TP_ARGS(s),
  31
  32         TP_FIELDS(
  33                 ctf_string(s, s)
  34         )
  35 )
  36
  37 #ifdef CONFIG_RCU_TRACE
  38
  39 #if defined(CONFIG_TREE_RCU) \
  40         || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) \
  41                 && defined(CONFIG_PREEMPT_RCU)) \
  42         || defined(CONFIG_TREE_PREEMPT_RCU)
  43
  44 /*
  45  * Tracepoint for grace-period events: starting and ending a grace
  46  * period ("start" and "end", respectively), a CPU noting the start
  47  * of a new grace period or the end of an old grace period ("cpustart"
  48  * and "cpuend", respectively), a CPU passing through a quiescent
  49  * state ("cpuqs"), a CPU coming online or going offline ("cpuonl"
  50  * and "cpuofl", respectively), and a CPU being kicked for being too
  51  * long in dyntick-idle mode ("kick").
  52  */
  53 LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
  54
  55 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
  56         TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent),
  57 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  58         TP_PROTO(char *rcuname, unsigned long gpnum, char *gpevent),
  59 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  60
  61         TP_ARGS(rcuname, gpnum, gpevent),
  62
  63         TP_FIELDS(
  64                 ctf_string(rcuname, rcuname)
  65                 ctf_integer(unsigned long, gpnum, gpnum)
  66                 ctf_string(gpevent, gpevent)
  67         )
  68 )
  69
  70 /*
  71  * Tracepoint for grace-period-initialization events.  These are
  72  * distinguished by the type of RCU, the new grace-period number, the
  73  * rcu_node structure level, the starting and ending CPU covered by the
  74  * rcu_node structure, and the mask of CPUs that will be waited for.
  75  * All but the type of RCU are extracted from the rcu_node structure.
  76  */
  77 LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
  78
  79 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
  80         TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level,
  81                  int grplo, int grphi, unsigned long qsmask),
  82 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  83         TP_PROTO(char *rcuname, unsigned long gpnum, u8 level,
  84                  int grplo, int grphi, unsigned long qsmask),
  85 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  86
  87         TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask),
  88
  89         TP_FIELDS(
  90                 ctf_string(rcuname, rcuname)
  91                 ctf_integer(unsigned long, gpnum, gpnum)
  92                 ctf_integer(u8, level, level)
  93                 ctf_integer(int, grplo, grplo)
  94                 ctf_integer(int, grphi, grphi)
  95                 ctf_integer(unsigned long, qsmask, qsmask)
  96         )
  97 )
  98
  99 /*
 100  * Tracepoint for tasks blocking within preemptible-RCU read-side
 101  * critical sections.  Track the type of RCU (which one day might
 102  * include SRCU), the grace-period number that the task is blocking
 103  * (the current or the next), and the task's PID.
 104  */
 105 LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
 106
 107 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 108         TP_PROTO(const char *rcuname, int pid, unsigned long gpnum),
 109 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 110         TP_PROTO(char *rcuname, int pid, unsigned long gpnum),
 111 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 112
 113         TP_ARGS(rcuname, pid, gpnum),
 114
 115         TP_FIELDS(
 116                 ctf_string(rcuname, rcuname)
 117                 ctf_integer(unsigned long, gpnum, gpnum)
 118                 ctf_integer(int, pid, pid)
 119         )
 120 )
 121
 122 /*
 123  * Tracepoint for tasks that blocked within a given preemptible-RCU
 124  * read-side critical section exiting that critical section.  Track the
 125  * type of RCU (which one day might include SRCU) and the task's PID.
 126  */
 127 LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
 128
 129 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 130         TP_PROTO(const char *rcuname, unsigned long gpnum, int pid),
 131 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 132         TP_PROTO(char *rcuname, unsigned long gpnum, int pid),
 133 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 134
 135         TP_ARGS(rcuname, gpnum, pid),
 136
 137         TP_FIELDS(
 138                 ctf_string(rcuname, rcuname)
 139                 ctf_integer(unsigned long, gpnum, gpnum)
 140                 ctf_integer(int, pid, pid)
 141         )
 142 )
 143
 144 /*
 145  * Tracepoint for quiescent-state-reporting events.  These are
 146  * distinguished by the type of RCU, the grace-period number, the
 147  * mask of quiescent lower-level entities, the rcu_node structure level,
 148  * the starting and ending CPU covered by the rcu_node structure, and
 149  * whether there are any blocked tasks blocking the current grace period.
 150  * All but the type of RCU are extracted from the rcu_node structure.
 151  */
 152 LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
 153
 154 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 155         TP_PROTO(const char *rcuname, unsigned long gpnum,
 156                  unsigned long mask, unsigned long qsmask,
 157                  u8 level, int grplo, int grphi, int gp_tasks),
 158 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 159         TP_PROTO(char *rcuname, unsigned long gpnum,
 160                  unsigned long mask, unsigned long qsmask,
 161                  u8 level, int grplo, int grphi, int gp_tasks),
 162 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 163
 164         TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks),
 165
 166         TP_FIELDS(
 167                 ctf_string(rcuname, rcuname)
 168                 ctf_integer(unsigned long, gpnum, gpnum)
 169                 ctf_integer(unsigned long, mask, mask)
 170                 ctf_integer(unsigned long, qsmask, qsmask)
 171                 ctf_integer(u8, level, level)
 172                 ctf_integer(int, grplo, grplo)
 173                 ctf_integer(int, grphi, grphi)
 174                 ctf_integer(u8, gp_tasks, gp_tasks)
 175         )
 176 )
 177
 178 /*
 179  * Tracepoint for quiescent states detected by force_quiescent_state().
 180  * These trace events include the type of RCU, the grace-period number
 181  * that was blocked by the CPU, the CPU itself, and the type of quiescent
 182  * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline,
 183  * or "kick" when kicking a CPU that has been in dyntick-idle mode for
 184  * too long.
 185  */
 186 LTTNG_TRACEPOINT_EVENT(rcu_fqs,
 187
 188 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 189         TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent),
 190 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 191         TP_PROTO(char *rcuname, unsigned long gpnum, int cpu, char *qsevent),
 192 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 193
 194         TP_ARGS(rcuname, gpnum, cpu, qsevent),
 195
 196         TP_FIELDS(
 197                 ctf_integer(unsigned long, gpnum, gpnum)
 198                 ctf_integer(int, cpu, cpu)
 199                 ctf_string(rcuname, rcuname)
 200                 ctf_string(qsevent, qsevent)
 201         )
 202 )
 203
 204 #endif  /*
 205          * #if defined(CONFIG_TREE_RCU)
 206          *      || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
 207          *              && defined(CONFIG_PREEMPT_RCU))
 208          *      || defined(CONFIG_TREE_PREEMPT_RCU)
 209          */
 210
 211 /*
 212  * Tracepoint for dyntick-idle entry/exit events.  These take a string
 213  * as argument: "Start" for entering dyntick-idle mode, "End" for
 214  * leaving it, "--=" for events moving towards idle, and "++=" for events
 215  * moving away from idle.  "Error on entry: not idle task" and "Error on
 216  * exit: not idle task" indicate that a non-idle task is erroneously
 217  * toying with the idle loop.
 218  *
 219  * These events also take a pair of numbers, which indicate the nesting
 220  * depth before and after the event of interest.  Note that task-related
 221  * events use the upper bits of each number, while interrupt-related
 222  * events use the lower bits.
 223  */
 224 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0))
 225 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 226
 227         TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks),
 228
 229         TP_ARGS(polarity, oldnesting, newnesting, dynticks),
 230
 231         TP_FIELDS(
 232                 ctf_string(polarity, polarity)
 233                 ctf_integer(long, oldnesting, oldnesting)
 234                 ctf_integer(long, newnesting, newnesting)
 235                 ctf_integer(int, dynticks, atomic_read(&dynticks))
 236         )
 237 )
 238
 239 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 240 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 241
 242         TP_PROTO(const char *polarity, long long oldnesting, long long newnesting),
 243
 244         TP_ARGS(polarity, oldnesting, newnesting),
 245
 246         TP_FIELDS(
 247                 ctf_string(polarity, polarity)
 248                 ctf_integer(long long, oldnesting, oldnesting)
 249                 ctf_integer(long long, newnesting, newnesting)
 250         )
 251 )
 252 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 253 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 254
 255         TP_PROTO(char *polarity, long long oldnesting, long long newnesting),
 256
 257         TP_ARGS(polarity, oldnesting, newnesting),
 258
 259         TP_FIELDS(
 260                 ctf_string(polarity, polarity)
 261                 ctf_integer(long long, oldnesting, oldnesting)
 262                 ctf_integer(long long, newnesting, newnesting)
 263         )
 264 )
 265 #else
 266 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 267
 268         TP_PROTO(char *polarity),
 269
 270         TP_ARGS(polarity),
 271
 272         TP_FIELDS(
 273                 ctf_string(polarity, polarity)
 274         )
 275 )
 276 #endif
 277
 278
 279 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 280 /*
 281  * Tracepoint for RCU preparation for idle, the goal being to get RCU
 282  * processing done so that the current CPU can shut off its scheduling
 283  * clock and enter dyntick-idle mode.  One way to accomplish this is
 284  * to drain all RCU callbacks from this CPU, and the other is to have
 285  * done everything RCU requires for the current grace period.  In this
 286  * latter case, the CPU will be awakened at the end of the current grace
 287  * period in order to process the remainder of its callbacks.
 288  *
 289  * These tracepoints take a string as argument:
 290  *
 291  *      "No callbacks": Nothing to do, no callbacks on this CPU.
 292  *      "In holdoff": Nothing to do, holding off after unsuccessful attempt.
 293  *      "Begin holdoff": Attempt failed, don't retry until next jiffy.
 294  *      "Dyntick with callbacks": Entering dyntick-idle despite callbacks.
 295  *      "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks.
 296  *      "More callbacks": Still more callbacks, try again to clear them out.
 297  *      "Callbacks drained": All callbacks processed, off to dyntick idle!
 298  *      "Timer": Timer fired to cause CPU to continue processing callbacks.
 299  *      "Demigrate": Timer fired on wrong CPU, woke up correct CPU.
 300  *      "Cleanup after idle": Idle exited, timer canceled.
 301  */
 302 LTTNG_TRACEPOINT_EVENT(rcu_prep_idle,
 303
 304 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 305         TP_PROTO(const char *reason),
 306 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 307         TP_PROTO(char *reason),
 308 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 309
 310         TP_ARGS(reason),
 311
 312         TP_FIELDS(
 313                 ctf_string(reason, reason)
 314         )
 315 )
 316 #endif
 317
 318 /*
 319  * Tracepoint for the registration of a single RCU callback function.
 320  * The first argument is the type of RCU, the second argument is
 321  * a pointer to the RCU callback itself, the third element is the
 322  * number of lazy callbacks queued, and the fourth element is the
 323  * total number of callbacks queued.
 324  */
 325 LTTNG_TRACEPOINT_EVENT(rcu_callback,
 326
 327 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 328         TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
 329                  long qlen),
 330
 331         TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
 332 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 333         TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen_lazy,
 334                  long qlen),
 335
 336         TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
 337 #else
 338         TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen),
 339
 340         TP_ARGS(rcuname, rhp, qlen),
 341 #endif
 342
 343         TP_FIELDS(
 344                 ctf_string(rcuname, rcuname)
 345                 ctf_integer_hex(void *, rhp, rhp)
 346                 ctf_integer_hex(void *, func, rhp->func)
 347 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 348                 ctf_integer(long, qlen_lazy, qlen_lazy)
 349 #endif
 350                 ctf_integer(long, qlen, qlen)
 351         )
 352 )
 353
 354 /*
 355  * Tracepoint for the registration of a single RCU callback of the special
 356  * kfree() form.  The first argument is the RCU type, the second argument
 357  * is a pointer to the RCU callback, the third argument is the offset
 358  * of the callback within the enclosing RCU-protected data structure,
 359  * the fourth argument is the number of lazy callbacks queued, and the
 360  * fifth argument is the total number of callbacks queued.
 361  */
 362 LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
 363
 364
 365 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 366         TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
 367                  long qlen_lazy, long qlen),
 368
 369         TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
 370 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 371         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
 372                  long qlen_lazy, long qlen),
 373
 374         TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
 375 #else
 376         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
 377                  long qlen),
 378
 379         TP_ARGS(rcuname, rhp, offset, qlen),
 380 #endif
 381
 382         TP_FIELDS(
 383                 ctf_string(rcuname, rcuname)
 384                 ctf_integer_hex(void *, rhp, rhp)
 385                 ctf_integer_hex(unsigned long, offset, offset)
 386 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 387                 ctf_integer(long, qlen_lazy, qlen_lazy)
 388 #endif
 389                 ctf_integer(long, qlen, qlen)
 390         )
 391 )
 392
 393 /*
 394  * Tracepoint for marking the beginning rcu_do_batch, performed to start
 395  * RCU callback invocation.  The first argument is the RCU flavor,
 396  * the second is the number of lazy callbacks queued, the third is
 397  * the total number of callbacks queued, and the fourth argument is
 398  * the current RCU-callback batch limit.
 399  */
 400 LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
 401
 402 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 403         TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
 404
 405         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 406 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 407         TP_PROTO(char *rcuname, long qlen_lazy, long qlen, long blimit),
 408
 409         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 410 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 411         TP_PROTO(char *rcuname, long qlen_lazy, long qlen, int blimit),
 412
 413         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 414 #else
 415         TP_PROTO(char *rcuname, long qlen, int blimit),
 416
 417         TP_ARGS(rcuname, qlen, blimit),
 418 #endif
 419
 420         TP_FIELDS(
 421                 ctf_string(rcuname, rcuname)
 422 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 423                 ctf_integer(long, qlen_lazy, qlen_lazy)
 424 #endif
 425                 ctf_integer(long, qlen, qlen)
 426 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 427                 ctf_integer(long, blimit, blimit)
 428 #else
 429                 ctf_integer(int, blimit, blimit)
 430 #endif
 431         )
 432 )
 433
 434 /*
 435  * Tracepoint for the invocation of a single RCU callback function.
 436  * The first argument is the type of RCU, and the second argument is
 437  * a pointer to the RCU callback itself.
 438  */
 439 LTTNG_TRACEPOINT_EVENT(rcu_invoke_callback,
 440
 441 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 442         TP_PROTO(const char *rcuname, struct rcu_head *rhp),
 443 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 444         TP_PROTO(char *rcuname, struct rcu_head *rhp),
 445 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 446
 447         TP_ARGS(rcuname, rhp),
 448
 449         TP_FIELDS(
 450                 ctf_string(rcuname, rcuname)
 451                 ctf_integer_hex(void *, rhp, rhp)
 452                 ctf_integer_hex(void *, func, rhp->func)
 453         )
 454 )
 455
 456 /*
 457  * Tracepoint for the invocation of a single RCU callback of the special
 458  * kfree() form.  The first argument is the RCU flavor, the second
 459  * argument is a pointer to the RCU callback, and the third argument
 460  * is the offset of the callback within the enclosing RCU-protected
 461  * data structure.
 462  */
 463 LTTNG_TRACEPOINT_EVENT(rcu_invoke_kfree_callback,
 464
 465 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 466         TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
 467 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 468         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset),
 469 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 470
 471         TP_ARGS(rcuname, rhp, offset),
 472
 473         TP_FIELDS(
 474                 ctf_string(rcuname, rcuname)
 475                 ctf_integer_hex(void *, rhp, rhp)
 476                 ctf_integer(unsigned long, offset, offset)
 477         )
 478 )
 479
 480 /*
 481  * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
 482  * invoked.  The first argument is the name of the RCU flavor,
 483  * the second argument is number of callbacks actually invoked,
 484  * the third argument (cb) is whether or not any of the callbacks that
 485  * were ready to invoke at the beginning of this batch are still
 486  * queued, the fourth argument (nr) is the return value of need_resched(),
 487  * the fifth argument (iit) is 1 if the current task is the idle task,
 488  * and the sixth argument (risk) is the return value from
 489  * rcu_is_callbacks_kthread().
 490  */
 491 LTTNG_TRACEPOINT_EVENT(rcu_batch_end,
 492
 493 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 494         TP_PROTO(const char *rcuname, int callbacks_invoked,
 495                  char cb, char nr, char iit, char risk),
 496
 497         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 498 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 499         TP_PROTO(const char *rcuname, int callbacks_invoked,
 500                  bool cb, bool nr, bool iit, bool risk),
 501
 502         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 503 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 504         TP_PROTO(char *rcuname, int callbacks_invoked,
 505                  bool cb, bool nr, bool iit, bool risk),
 506
 507         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 508 #else
 509         TP_PROTO(char *rcuname, int callbacks_invoked),
 510
 511         TP_ARGS(rcuname, callbacks_invoked),
 512 #endif
 513
 514         TP_FIELDS(
 515                 ctf_string(rcuname, rcuname)
 516                 ctf_integer(int, callbacks_invoked, callbacks_invoked)
 517 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 518                 ctf_integer(char, cb, cb)
 519                 ctf_integer(char, nr, nr)
 520                 ctf_integer(char, iit, iit)
 521                 ctf_integer(char, risk, risk)
 522 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 523                 ctf_integer(bool, cb, cb)
 524                 ctf_integer(bool, nr, nr)
 525                 ctf_integer(bool, iit, iit)
 526                 ctf_integer(bool, risk, risk)
 527 #endif
 528         )
 529 )
 530
 531 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 532 /*
 533  * Tracepoint for rcutorture readers.  The first argument is the name
 534  * of the RCU flavor from rcutorture's viewpoint and the second argument
 535  * is the callback address.
 536  */
 537 LTTNG_TRACEPOINT_EVENT(rcu_torture_read,
 538
 539 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 540         TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
 541                  unsigned long secs, unsigned long c_old, unsigned long c),
 542
 543         TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 544 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 545         TP_PROTO(char *rcutorturename, struct rcu_head *rhp,
 546                  unsigned long secs, unsigned long c_old, unsigned long c),
 547
 548         TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 549 #else
 550         TP_PROTO(char *rcutorturename, struct rcu_head *rhp),
 551
 552         TP_ARGS(rcutorturename, rhp),
 553 #endif
 554
 555         TP_FIELDS(
 556                 ctf_string(rcutorturename, rcutorturename)
 557                 ctf_integer_hex(struct rcu_head *, rhp, rhp)
 558 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 559                 ctf_integer(unsigned long, secs, secs)
 560                 ctf_integer(unsigned long, c_old, c_old)
 561                 ctf_integer(unsigned long, c, c)
 562 #endif
 563         )
 564 )
 565 #endif
 566
 567 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 568 /*
 569  * Tracepoint for _rcu_barrier() execution.  The string "s" describes
 570  * the _rcu_barrier phase:
 571  *      "Begin": rcu_barrier_callback() started.
 572  *      "Check": rcu_barrier_callback() checking for piggybacking.
 573  *      "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit.
 574  *      "Inc1": rcu_barrier_callback() piggyback check counter incremented.
 575  *      "Offline": rcu_barrier_callback() found offline CPU
 576  *      "OnlineQ": rcu_barrier_callback() found online CPU with callbacks.
 577  *      "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks.
 578  *      "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
 579  *      "CB": An rcu_barrier_callback() invoked a callback, not the last.
 580  *      "LastCB": An rcu_barrier_callback() invoked the last callback.
 581  *      "Inc2": rcu_barrier_callback() piggyback check counter incremented.
 582  * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
 583  * is the count of remaining callbacks, and "done" is the piggybacking count.
 584  */
 585 LTTNG_TRACEPOINT_EVENT(rcu_barrier,
 586
 587 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 588         TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
 589 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 590         TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done),
 591 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 592
 593         TP_ARGS(rcuname, s, cpu, cnt, done),
 594
 595         TP_FIELDS(
 596                 ctf_string(rcuname, rcuname)
 597                 ctf_string(s, s)
 598                 ctf_integer(int, cpu, cpu)
 599                 ctf_integer(int, cnt, cnt)
 600                 ctf_integer(unsigned long, done, done)
 601         )
 602 )
 603 #endif
 604
 605 #else /* #ifdef CONFIG_RCU_TRACE */
 606
 607 #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
 608 #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
 609                                     qsmask) do { } while (0)
 610 #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
 611 #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
 612 #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
 613                                          grplo, grphi, gp_tasks) do { } \
 614         while (0)
 615 #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
 616 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0))
 617 #define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0)
 618 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 619 #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
 620 #else
 621 #define trace_rcu_dyntick(polarity) do { } while (0)
 622 #endif
 623 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 624 #define trace_rcu_prep_idle(reason) do { } while (0)
 625 #endif
 626 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 627 #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
 628 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
 629         do { } while (0)
 630 #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
 631         do { } while (0)
 632 #else
 633 #define trace_rcu_callback(rcuname, rhp, qlen) do { } while (0)
 634 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen) do { } while (0)
 635 #define trace_rcu_batch_start(rcuname, qlen, blimit) do { } while (0)
 636 #endif
 637 #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
 638 #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
 639 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 640 #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
 641         do { } while (0)
 642 #else
 643 #define trace_rcu_batch_end(rcuname, callbacks_invoked) do { } while (0)
 644 #endif
 645 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 646 #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
 647         do { } while (0)
 648 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 649 #define trace_rcu_torture_read(rcutorturename, rhp) do { } while (0)
 650 #endif
 651 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 652 #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
 653 #endif
 654 #endif /* #else #ifdef CONFIG_RCU_TRACE */
 655
 656 #endif /* LTTNG_TRACE_RCU_H */
 657
 658 /* This part must be outside protection */
 659 #include <probes/define_trace.h>