instrumentation/events/lttng-module/rcu.h

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