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_STRUCT__entry(
  32                 __string(s, s)
  33         ),
  34
  35         TP_fast_assign(
  36                 tp_strcpy(s, s)
  37         ),
  38
  39         TP_printk("%s", __get_str(s))
  40 )
  41
  42 #ifdef CONFIG_RCU_TRACE
  43
  44 #if defined(CONFIG_TREE_RCU) \
  45         || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) \
  46                 && defined(CONFIG_PREEMPT_RCU)) \
  47         || defined(CONFIG_TREE_PREEMPT_RCU)
  48
  49 /*
  50  * Tracepoint for grace-period events: starting and ending a grace
  51  * period ("start" and "end", respectively), a CPU noting the start
  52  * of a new grace period or the end of an old grace period ("cpustart"
  53  * and "cpuend", respectively), a CPU passing through a quiescent
  54  * state ("cpuqs"), a CPU coming online or going offline ("cpuonl"
  55  * and "cpuofl", respectively), and a CPU being kicked for being too
  56  * long in dyntick-idle mode ("kick").
  57  */
  58 LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
  59
  60 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
  61         TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent),
  62 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  63         TP_PROTO(char *rcuname, unsigned long gpnum, char *gpevent),
  64 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  65
  66         TP_ARGS(rcuname, gpnum, gpevent),
  67
  68         TP_STRUCT__entry(
  69                 __string(rcuname, rcuname)
  70                 __field(unsigned long, gpnum)
  71                 __string(gpevent, gpevent)
  72         ),
  73
  74         TP_fast_assign(
  75                 tp_strcpy(rcuname, rcuname)
  76                 tp_assign(gpnum, gpnum)
  77                 tp_strcpy(gpevent, gpevent)
  78         ),
  79
  80         TP_printk("%s %lu %s",
  81                   __get_str(rcuname), __entry->gpnum, __get_str(gpevent))
  82 )
  83
  84 /*
  85  * Tracepoint for grace-period-initialization events.  These are
  86  * distinguished by the type of RCU, the new grace-period number, the
  87  * rcu_node structure level, the starting and ending CPU covered by the
  88  * rcu_node structure, and the mask of CPUs that will be waited for.
  89  * All but the type of RCU are extracted from the rcu_node structure.
  90  */
  91 LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
  92
  93 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
  94         TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level,
  95                  int grplo, int grphi, unsigned long qsmask),
  96 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
  97         TP_PROTO(char *rcuname, unsigned long gpnum, u8 level,
  98                  int grplo, int grphi, unsigned long qsmask),
  99 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 100
 101         TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask),
 102
 103         TP_STRUCT__entry(
 104                 __string(rcuname, rcuname)
 105                 __field(unsigned long, gpnum)
 106                 __field(u8, level)
 107                 __field(int, grplo)
 108                 __field(int, grphi)
 109                 __field(unsigned long, qsmask)
 110         ),
 111
 112         TP_fast_assign(
 113                 tp_strcpy(rcuname, rcuname)
 114                 tp_assign(gpnum, gpnum)
 115                 tp_assign(level, level)
 116                 tp_assign(grplo, grplo)
 117                 tp_assign(grphi, grphi)
 118                 tp_assign(qsmask, qsmask)
 119         ),
 120
 121         TP_printk("%s %lu %u %d %d %lx",
 122                   __get_str(rcuname), __entry->gpnum, __entry->level,
 123                   __entry->grplo, __entry->grphi, __entry->qsmask)
 124 )
 125
 126 /*
 127  * Tracepoint for tasks blocking within preemptible-RCU read-side
 128  * critical sections.  Track the type of RCU (which one day might
 129  * include SRCU), the grace-period number that the task is blocking
 130  * (the current or the next), and the task's PID.
 131  */
 132 LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
 133
 134 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 135         TP_PROTO(const char *rcuname, int pid, unsigned long gpnum),
 136 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 137         TP_PROTO(char *rcuname, int pid, unsigned long gpnum),
 138 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 139
 140         TP_ARGS(rcuname, pid, gpnum),
 141
 142         TP_STRUCT__entry(
 143                 __string(rcuname, rcuname)
 144                 __field(unsigned long, gpnum)
 145                 __field(int, pid)
 146         ),
 147
 148         TP_fast_assign(
 149                 tp_strcpy(rcuname, rcuname)
 150                 tp_assign(gpnum, gpnum)
 151                 tp_assign(pid, pid)
 152         ),
 153
 154         TP_printk("%s %lu %d",
 155                   __get_str(rcuname), __entry->gpnum, __entry->pid)
 156 )
 157
 158 /*
 159  * Tracepoint for tasks that blocked within a given preemptible-RCU
 160  * read-side critical section exiting that critical section.  Track the
 161  * type of RCU (which one day might include SRCU) and the task's PID.
 162  */
 163 LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
 164
 165 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 166         TP_PROTO(const char *rcuname, unsigned long gpnum, int pid),
 167 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 168         TP_PROTO(char *rcuname, unsigned long gpnum, int pid),
 169 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 170
 171         TP_ARGS(rcuname, gpnum, pid),
 172
 173         TP_STRUCT__entry(
 174                 __string(rcuname, rcuname)
 175                 __field(unsigned long, gpnum)
 176                 __field(int, pid)
 177         ),
 178
 179         TP_fast_assign(
 180                 tp_strcpy(rcuname, rcuname)
 181                 tp_assign(gpnum, gpnum)
 182                 tp_assign(pid, pid)
 183         ),
 184
 185         TP_printk("%s %lu %d", __get_str(rcuname), __entry->gpnum, __entry->pid)
 186 )
 187
 188 /*
 189  * Tracepoint for quiescent-state-reporting events.  These are
 190  * distinguished by the type of RCU, the grace-period number, the
 191  * mask of quiescent lower-level entities, the rcu_node structure level,
 192  * the starting and ending CPU covered by the rcu_node structure, and
 193  * whether there are any blocked tasks blocking the current grace period.
 194  * All but the type of RCU are extracted from the rcu_node structure.
 195  */
 196 LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
 197
 198 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 199         TP_PROTO(const char *rcuname, unsigned long gpnum,
 200                  unsigned long mask, unsigned long qsmask,
 201                  u8 level, int grplo, int grphi, int gp_tasks),
 202 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 203         TP_PROTO(char *rcuname, unsigned long gpnum,
 204                  unsigned long mask, unsigned long qsmask,
 205                  u8 level, int grplo, int grphi, int gp_tasks),
 206 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 207
 208         TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks),
 209
 210         TP_STRUCT__entry(
 211                 __string(rcuname, rcuname)
 212                 __field(unsigned long, gpnum)
 213                 __field(unsigned long, mask)
 214                 __field(unsigned long, qsmask)
 215                 __field(u8, level)
 216                 __field(int, grplo)
 217                 __field(int, grphi)
 218                 __field(u8, gp_tasks)
 219         ),
 220
 221         TP_fast_assign(
 222                 tp_strcpy(rcuname, rcuname)
 223                 tp_assign(gpnum, gpnum)
 224                 tp_assign(mask, mask)
 225                 tp_assign(qsmask, qsmask)
 226                 tp_assign(level, level)
 227                 tp_assign(grplo, grplo)
 228                 tp_assign(grphi, grphi)
 229                 tp_assign(gp_tasks, gp_tasks)
 230         ),
 231
 232         TP_printk("%s %lu %lx>%lx %u %d %d %u",
 233                   __get_str(rcuname), __entry->gpnum,
 234                   __entry->mask, __entry->qsmask, __entry->level,
 235                   __entry->grplo, __entry->grphi, __entry->gp_tasks)
 236 )
 237
 238 /*
 239  * Tracepoint for quiescent states detected by force_quiescent_state().
 240  * These trace events include the type of RCU, the grace-period number
 241  * that was blocked by the CPU, the CPU itself, and the type of quiescent
 242  * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline,
 243  * or "kick" when kicking a CPU that has been in dyntick-idle mode for
 244  * too long.
 245  */
 246 LTTNG_TRACEPOINT_EVENT(rcu_fqs,
 247
 248 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 249         TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent),
 250 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 251         TP_PROTO(char *rcuname, unsigned long gpnum, int cpu, char *qsevent),
 252 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 253
 254         TP_ARGS(rcuname, gpnum, cpu, qsevent),
 255
 256         TP_STRUCT__entry(
 257                 __string(rcuname, rcuname)
 258                 __field(unsigned long, gpnum)
 259                 __field(int, cpu)
 260                 __string(qsevent, qsevent)
 261         ),
 262
 263         TP_fast_assign(
 264                 tp_strcpy(rcuname, rcuname)
 265                 tp_assign(gpnum, gpnum)
 266                 tp_assign(cpu, cpu)
 267                 tp_strcpy(qsevent, qsevent)
 268         ),
 269
 270         TP_printk("%s %lu %d %s",
 271                   __get_str(rcuname), __entry->gpnum,
 272                   __entry->cpu, __get_str(qsevent))
 273 )
 274
 275 #endif  /*
 276          * #if defined(CONFIG_TREE_RCU)
 277          *      || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
 278          *              && defined(CONFIG_PREEMPT_RCU))
 279          *      || defined(CONFIG_TREE_PREEMPT_RCU)
 280          */
 281
 282 /*
 283  * Tracepoint for dyntick-idle entry/exit events.  These take a string
 284  * as argument: "Start" for entering dyntick-idle mode, "End" for
 285  * leaving it, "--=" for events moving towards idle, and "++=" for events
 286  * moving away from idle.  "Error on entry: not idle task" and "Error on
 287  * exit: not idle task" indicate that a non-idle task is erroneously
 288  * toying with the idle loop.
 289  *
 290  * These events also take a pair of numbers, which indicate the nesting
 291  * depth before and after the event of interest.  Note that task-related
 292  * events use the upper bits of each number, while interrupt-related
 293  * events use the lower bits.
 294  */
 295 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 296
 297
 298 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 299         TP_PROTO(const char *polarity, long long oldnesting, long long newnesting),
 300
 301         TP_ARGS(polarity, oldnesting, newnesting),
 302 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 303         TP_PROTO(char *polarity, long long oldnesting, long long newnesting),
 304
 305         TP_ARGS(polarity, oldnesting, newnesting),
 306 #else
 307         TP_PROTO(char *polarity),
 308
 309         TP_ARGS(polarity),
 310 #endif
 311
 312         TP_STRUCT__entry(
 313                 __string(polarity, polarity)
 314 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 315                 __field(long long, oldnesting)
 316                 __field(long long, newnesting)
 317 #endif
 318         ),
 319
 320         TP_fast_assign(
 321                 tp_strcpy(polarity, polarity)
 322 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 323                 tp_assign(oldnesting, oldnesting)
 324                 tp_assign(newnesting, newnesting)
 325 #endif
 326         ),
 327
 328 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 329         TP_printk("%s %llx %llx", __get_str(polarity),
 330                   __entry->oldnesting, __entry->newnesting)
 331 #else
 332         TP_printk("%s", __get_str(polarity))
 333 #endif
 334 )
 335
 336 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 337 /*
 338  * Tracepoint for RCU preparation for idle, the goal being to get RCU
 339  * processing done so that the current CPU can shut off its scheduling
 340  * clock and enter dyntick-idle mode.  One way to accomplish this is
 341  * to drain all RCU callbacks from this CPU, and the other is to have
 342  * done everything RCU requires for the current grace period.  In this
 343  * latter case, the CPU will be awakened at the end of the current grace
 344  * period in order to process the remainder of its callbacks.
 345  *
 346  * These tracepoints take a string as argument:
 347  *
 348  *      "No callbacks": Nothing to do, no callbacks on this CPU.
 349  *      "In holdoff": Nothing to do, holding off after unsuccessful attempt.
 350  *      "Begin holdoff": Attempt failed, don't retry until next jiffy.
 351  *      "Dyntick with callbacks": Entering dyntick-idle despite callbacks.
 352  *      "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks.
 353  *      "More callbacks": Still more callbacks, try again to clear them out.
 354  *      "Callbacks drained": All callbacks processed, off to dyntick idle!
 355  *      "Timer": Timer fired to cause CPU to continue processing callbacks.
 356  *      "Demigrate": Timer fired on wrong CPU, woke up correct CPU.
 357  *      "Cleanup after idle": Idle exited, timer canceled.
 358  */
 359 LTTNG_TRACEPOINT_EVENT(rcu_prep_idle,
 360
 361 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 362         TP_PROTO(const char *reason),
 363 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 364         TP_PROTO(char *reason),
 365 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 366
 367         TP_ARGS(reason),
 368
 369         TP_STRUCT__entry(
 370                 __string(reason, reason)
 371         ),
 372
 373         TP_fast_assign(
 374                 tp_strcpy(reason, reason)
 375         ),
 376
 377         TP_printk("%s", __get_str(reason))
 378 )
 379 #endif
 380
 381 /*
 382  * Tracepoint for the registration of a single RCU callback function.
 383  * The first argument is the type of RCU, the second argument is
 384  * a pointer to the RCU callback itself, the third element is the
 385  * number of lazy callbacks queued, and the fourth element is the
 386  * total number of callbacks queued.
 387  */
 388 LTTNG_TRACEPOINT_EVENT(rcu_callback,
 389
 390 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 391         TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
 392                  long qlen),
 393
 394         TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
 395 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 396         TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen_lazy,
 397                  long qlen),
 398
 399         TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
 400 #else
 401         TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen),
 402
 403         TP_ARGS(rcuname, rhp, qlen),
 404 #endif
 405
 406         TP_STRUCT__entry(
 407                 __string(rcuname, rcuname)
 408                 __field(void *, rhp)
 409                 __field(void *, func)
 410 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 411                 __field(long, qlen_lazy)
 412 #endif
 413                 __field(long, qlen)
 414         ),
 415
 416         TP_fast_assign(
 417                 tp_strcpy(rcuname, rcuname)
 418                 tp_assign(rhp, rhp)
 419                 tp_assign(func, rhp->func)
 420 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 421                 tp_assign(qlen_lazy, qlen_lazy)
 422 #endif
 423                 tp_assign(qlen, qlen)
 424         ),
 425
 426 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 427         TP_printk("%s rhp=%p func=%pf %ld/%ld",
 428                   __get_str(rcuname), __entry->rhp, __entry->func,
 429                   __entry->qlen_lazy, __entry->qlen)
 430 #else
 431         TP_printk("%s rhp=%p func=%pf %ld",
 432                   __get_str(rcuname), __entry->rhp, __entry->func,
 433                   __entry->qlen)
 434 #endif
 435 )
 436
 437 /*
 438  * Tracepoint for the registration of a single RCU callback of the special
 439  * kfree() form.  The first argument is the RCU type, the second argument
 440  * is a pointer to the RCU callback, the third argument is the offset
 441  * of the callback within the enclosing RCU-protected data structure,
 442  * the fourth argument is the number of lazy callbacks queued, and the
 443  * fifth argument is the total number of callbacks queued.
 444  */
 445 LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
 446
 447
 448 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 449         TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
 450                  long qlen_lazy, long qlen),
 451
 452         TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
 453 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 454         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
 455                  long qlen_lazy, long qlen),
 456
 457         TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
 458 #else
 459         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
 460                  long qlen),
 461
 462         TP_ARGS(rcuname, rhp, offset, qlen),
 463 #endif
 464
 465         TP_STRUCT__entry(
 466                 __string(rcuname, rcuname)
 467                 __field(void *, rhp)
 468                 __field(unsigned long, offset)
 469 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 470                 __field(long, qlen_lazy)
 471 #endif
 472                 __field(long, qlen)
 473         ),
 474
 475         TP_fast_assign(
 476                 tp_strcpy(rcuname, rcuname)
 477                 tp_assign(rhp, rhp)
 478                 tp_assign(offset, offset)
 479 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 480                 tp_assign(qlen_lazy, qlen_lazy)
 481 #endif
 482                 tp_assign(qlen, qlen)
 483         ),
 484
 485 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 486         TP_printk("%s rhp=%p func=%ld %ld/%ld",
 487                   __get_str(rcuname), __entry->rhp, __entry->offset,
 488                   __entry->qlen_lazy, __entry->qlen)
 489 #else
 490         TP_printk("%s rhp=%p func=%ld %ld",
 491                   __get_str(rcuname), __entry->rhp, __entry->offset,
 492                   __entry->qlen)
 493 #endif
 494 )
 495
 496 /*
 497  * Tracepoint for marking the beginning rcu_do_batch, performed to start
 498  * RCU callback invocation.  The first argument is the RCU flavor,
 499  * the second is the number of lazy callbacks queued, the third is
 500  * the total number of callbacks queued, and the fourth argument is
 501  * the current RCU-callback batch limit.
 502  */
 503 LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
 504
 505 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 506         TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
 507
 508         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 509 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 510         TP_PROTO(char *rcuname, long qlen_lazy, long qlen, long blimit),
 511
 512         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 513 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 514         TP_PROTO(char *rcuname, long qlen_lazy, long qlen, int blimit),
 515
 516         TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
 517 #else
 518         TP_PROTO(char *rcuname, long qlen, int blimit),
 519
 520         TP_ARGS(rcuname, qlen, blimit),
 521 #endif
 522
 523         TP_STRUCT__entry(
 524                 __string(rcuname, rcuname)
 525 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 526                 __field(long, qlen_lazy)
 527 #endif
 528                 __field(long, qlen)
 529 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 530                 __field(long, blimit)
 531 #else
 532                 __field(int, blimit)
 533 #endif
 534         ),
 535
 536         TP_fast_assign(
 537                 tp_strcpy(rcuname, rcuname)
 538 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 539                 tp_assign(qlen_lazy, qlen_lazy)
 540 #endif
 541                 tp_assign(qlen, qlen)
 542                 tp_assign(blimit, blimit)
 543         ),
 544
 545 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 546         TP_printk("%s CBs=%ld/%ld bl=%ld",
 547                   __get_str(rcuname), __entry->qlen_lazy, __entry->qlen,
 548                   __entry->blimit)
 549 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 550         TP_printk("%s CBs=%ld/%ld bl=%d",
 551                   __get_str(rcuname), __entry->qlen_lazy, __entry->qlen,
 552                   __entry->blimit)
 553 #else
 554         TP_printk("%s CBs=%ld bl=%d",
 555                   __get_str(rcuname), __entry->qlen, __entry->blimit)
 556 #endif
 557 )
 558
 559 /*
 560  * Tracepoint for the invocation of a single RCU callback function.
 561  * The first argument is the type of RCU, and the second argument is
 562  * a pointer to the RCU callback itself.
 563  */
 564 LTTNG_TRACEPOINT_EVENT(rcu_invoke_callback,
 565
 566 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 567         TP_PROTO(const char *rcuname, struct rcu_head *rhp),
 568 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 569         TP_PROTO(char *rcuname, struct rcu_head *rhp),
 570 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 571
 572         TP_ARGS(rcuname, rhp),
 573
 574         TP_STRUCT__entry(
 575                 __string(rcuname, rcuname)
 576                 __field(void *, rhp)
 577                 __field(void *, func)
 578         ),
 579
 580         TP_fast_assign(
 581                 tp_strcpy(rcuname, rcuname)
 582                 tp_assign(rhp, rhp)
 583                 tp_assign(func, rhp->func)
 584         ),
 585
 586         TP_printk("%s rhp=%p func=%pf",
 587                   __get_str(rcuname), __entry->rhp, __entry->func)
 588 )
 589
 590 /*
 591  * Tracepoint for the invocation of a single RCU callback of the special
 592  * kfree() form.  The first argument is the RCU flavor, the second
 593  * argument is a pointer to the RCU callback, and the third argument
 594  * is the offset of the callback within the enclosing RCU-protected
 595  * data structure.
 596  */
 597 LTTNG_TRACEPOINT_EVENT(rcu_invoke_kfree_callback,
 598
 599 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 600         TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
 601 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 602         TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset),
 603 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 604
 605         TP_ARGS(rcuname, rhp, offset),
 606
 607         TP_STRUCT__entry(
 608                 __string(rcuname, rcuname)
 609                 __field(void *, rhp)
 610                 __field(unsigned long, offset)
 611         ),
 612
 613         TP_fast_assign(
 614                 tp_strcpy(rcuname, rcuname)
 615                 tp_assign(rhp, rhp)
 616                 tp_assign(offset, offset)
 617         ),
 618
 619         TP_printk("%s rhp=%p func=%ld",
 620                   __get_str(rcuname), __entry->rhp, __entry->offset)
 621 )
 622
 623 /*
 624  * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
 625  * invoked.  The first argument is the name of the RCU flavor,
 626  * the second argument is number of callbacks actually invoked,
 627  * the third argument (cb) is whether or not any of the callbacks that
 628  * were ready to invoke at the beginning of this batch are still
 629  * queued, the fourth argument (nr) is the return value of need_resched(),
 630  * the fifth argument (iit) is 1 if the current task is the idle task,
 631  * and the sixth argument (risk) is the return value from
 632  * rcu_is_callbacks_kthread().
 633  */
 634 LTTNG_TRACEPOINT_EVENT(rcu_batch_end,
 635
 636 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 637         TP_PROTO(const char *rcuname, int callbacks_invoked,
 638                  char cb, char nr, char iit, char risk),
 639
 640         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 641 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 642         TP_PROTO(const char *rcuname, int callbacks_invoked,
 643                  bool cb, bool nr, bool iit, bool risk),
 644
 645         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 646 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 647         TP_PROTO(char *rcuname, int callbacks_invoked,
 648                  bool cb, bool nr, bool iit, bool risk),
 649
 650         TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
 651 #else
 652         TP_PROTO(char *rcuname, int callbacks_invoked),
 653
 654         TP_ARGS(rcuname, callbacks_invoked),
 655 #endif
 656
 657         TP_STRUCT__entry(
 658                 __string(rcuname, rcuname)
 659                 __field(int, callbacks_invoked)
 660 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 661                 __field(char, cb)
 662                 __field(char, nr)
 663                 __field(char, iit)
 664                 __field(char, risk)
 665 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 666                 __field(bool, cb)
 667                 __field(bool, nr)
 668                 __field(bool, iit)
 669                 __field(bool, risk)
 670 #endif
 671         ),
 672
 673         TP_fast_assign(
 674                 tp_strcpy(rcuname, rcuname)
 675                 tp_assign(callbacks_invoked, callbacks_invoked)
 676 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 677                 tp_assign(cb, cb)
 678                 tp_assign(nr, nr)
 679                 tp_assign(iit, iit)
 680                 tp_assign(risk, risk)
 681 #endif
 682         ),
 683
 684 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 685         TP_printk("%s CBs-invoked=%d idle=%c%c%c%c",
 686                   __get_str(rcuname), __entry->callbacks_invoked,
 687                   __entry->cb ? 'C' : '.',
 688                   __entry->nr ? 'S' : '.',
 689                   __entry->iit ? 'I' : '.',
 690                   __entry->risk ? 'R' : '.')
 691 #else
 692         TP_printk("%s CBs-invoked=%d",
 693                   __get_str(rcuname), __entry->callbacks_invoked)
 694 #endif
 695 )
 696
 697 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 698 /*
 699  * Tracepoint for rcutorture readers.  The first argument is the name
 700  * of the RCU flavor from rcutorture's viewpoint and the second argument
 701  * is the callback address.
 702  */
 703 LTTNG_TRACEPOINT_EVENT(rcu_torture_read,
 704
 705 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 706         TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
 707                  unsigned long secs, unsigned long c_old, unsigned long c),
 708
 709         TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 710 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 711         TP_PROTO(char *rcutorturename, struct rcu_head *rhp,
 712                  unsigned long secs, unsigned long c_old, unsigned long c),
 713
 714         TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 715 #else
 716         TP_PROTO(char *rcutorturename, struct rcu_head *rhp),
 717
 718         TP_ARGS(rcutorturename, rhp),
 719 #endif
 720
 721         TP_STRUCT__entry(
 722                 __string(rcutorturename, rcutorturename)
 723                 __field(struct rcu_head *, rhp)
 724 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 725                 __field(unsigned long, secs)
 726                 __field(unsigned long, c_old)
 727                 __field(unsigned long, c)
 728 #endif
 729         ),
 730
 731         TP_fast_assign(
 732                 tp_strcpy(rcutorturename, rcutorturename)
 733                 tp_assign(rhp, rhp)
 734 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 735                 tp_assign(secs, secs)
 736                 tp_assign(c_old, c_old)
 737                 tp_assign(c, c)
 738 #endif
 739         ),
 740
 741 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 742         TP_printk("%s torture read %p %luus c: %lu %lu",
 743                   __entry->rcutorturename, __entry->rhp,
 744                   __entry->secs, __entry->c_old, __entry->c)
 745 #else
 746         TP_printk("%s torture read %p",
 747                   __get_str(rcutorturename), __entry->rhp)
 748 #endif
 749 )
 750 #endif
 751
 752 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 753 /*
 754  * Tracepoint for _rcu_barrier() execution.  The string "s" describes
 755  * the _rcu_barrier phase:
 756  *      "Begin": rcu_barrier_callback() started.
 757  *      "Check": rcu_barrier_callback() checking for piggybacking.
 758  *      "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit.
 759  *      "Inc1": rcu_barrier_callback() piggyback check counter incremented.
 760  *      "Offline": rcu_barrier_callback() found offline CPU
 761  *      "OnlineQ": rcu_barrier_callback() found online CPU with callbacks.
 762  *      "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks.
 763  *      "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
 764  *      "CB": An rcu_barrier_callback() invoked a callback, not the last.
 765  *      "LastCB": An rcu_barrier_callback() invoked the last callback.
 766  *      "Inc2": rcu_barrier_callback() piggyback check counter incremented.
 767  * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
 768  * is the count of remaining callbacks, and "done" is the piggybacking count.
 769  */
 770 LTTNG_TRACEPOINT_EVENT(rcu_barrier,
 771
 772 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
 773         TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
 774 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 775         TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done),
 776 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
 777
 778         TP_ARGS(rcuname, s, cpu, cnt, done),
 779
 780         TP_STRUCT__entry(
 781                 __string(rcuname, rcuname)
 782                 __string(s, s)
 783                 __field(int, cpu)
 784                 __field(int, cnt)
 785                 __field(unsigned long, done)
 786         ),
 787
 788         TP_fast_assign(
 789                 tp_strcpy(rcuname, rcuname)
 790                 tp_strcpy(s, s)
 791                 tp_assign(cpu, cpu)
 792                 tp_assign(cnt, cnt)
 793                 tp_assign(done, done)
 794         ),
 795
 796         TP_printk("%s %s cpu %d remaining %d # %lu",
 797                   __get_str(rcuname), __get_str(s), __entry->cpu, __entry->cnt,
 798                   __entry->done)
 799 )
 800 #endif
 801
 802 #else /* #ifdef CONFIG_RCU_TRACE */
 803
 804 #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
 805 #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
 806                                     qsmask) do { } while (0)
 807 #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
 808 #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
 809 #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
 810                                          grplo, grphi, gp_tasks) do { } \
 811         while (0)
 812 #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
 813 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 814 #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
 815 #else
 816 #define trace_rcu_dyntick(polarity) do { } while (0)
 817 #endif
 818 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 819 #define trace_rcu_prep_idle(reason) do { } while (0)
 820 #endif
 821 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 822 #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
 823 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
 824         do { } while (0)
 825 #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
 826         do { } while (0)
 827 #else
 828 #define trace_rcu_callback(rcuname, rhp, qlen) do { } while (0)
 829 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen) do { } while (0)
 830 #define trace_rcu_batch_start(rcuname, qlen, blimit) do { } while (0)
 831 #endif
 832 #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
 833 #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
 834 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 835 #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
 836         do { } while (0)
 837 #else
 838 #define trace_rcu_batch_end(rcuname, callbacks_invoked) do { } while (0)
 839 #endif
 840 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 841 #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
 842         do { } while (0)
 843 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 844 #define trace_rcu_torture_read(rcutorturename, rhp) do { } while (0)
 845 #endif
 846 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 847 #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
 848 #endif
 849 #endif /* #else #ifdef CONFIG_RCU_TRACE */
 850
 851 #endif /* LTTNG_TRACE_RCU_H */
 852
 853 /* This part must be outside protection */
 854 #include "../../../probes/define_trace.h"