2 #define TRACE_SYSTEM rcu
4 #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/tracepoint.h>
10 * Tracepoint for start/end markers used for utilization calculations.
11 * By convention, the string is of the following forms:
13 * "Start <activity>" -- Mark the start of the specified activity,
14 * such as "context switch". Nesting is permitted.
15 * "End <activity>" -- Mark the end of the specified activity.
17 * An "@" character within "<activity>" is a comment character: Data
18 * reduction scripts will ignore the "@" and the remainder of the line.
20 TRACE_EVENT(rcu_utilization
,
22 TP_PROTO(const char *s
),
27 __field(const char *, s
)
34 TP_printk("%s", __entry
->s
)
37 #ifdef CONFIG_RCU_TRACE
39 #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU)
42 * Tracepoint for grace-period events. Takes a string identifying the
43 * RCU flavor, the grace-period number, and a string identifying the
44 * grace-period-related event as follows:
46 * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL.
47 * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL.
48 * "newreq": Request a new grace period.
49 * "start": Start a grace period.
50 * "cpustart": CPU first notices a grace-period start.
51 * "cpuqs": CPU passes through a quiescent state.
52 * "cpuonl": CPU comes online.
53 * "cpuofl": CPU goes offline.
54 * "reqwait": GP kthread sleeps waiting for grace-period request.
55 * "reqwaitsig": GP kthread awakened by signal from reqwait state.
56 * "fqswait": GP kthread waiting until time to force quiescent states.
57 * "fqsstart": GP kthread starts forcing quiescent states.
58 * "fqsend": GP kthread done forcing quiescent states.
59 * "fqswaitsig": GP kthread awakened by signal from fqswait state.
60 * "end": End a grace period.
61 * "cpuend": CPU first notices a grace-period end.
63 TRACE_EVENT(rcu_grace_period
,
65 TP_PROTO(const char *rcuname
, unsigned long gpnum
, const char *gpevent
),
67 TP_ARGS(rcuname
, gpnum
, gpevent
),
70 __field(const char *, rcuname
)
71 __field(unsigned long, gpnum
)
72 __field(const char *, gpevent
)
76 __entry
->rcuname
= rcuname
;
77 __entry
->gpnum
= gpnum
;
78 __entry
->gpevent
= gpevent
;
81 TP_printk("%s %lu %s",
82 __entry
->rcuname
, __entry
->gpnum
, __entry
->gpevent
)
86 * Tracepoint for future grace-period events, including those for no-callbacks
87 * CPUs. The caller should pull the data from the rcu_node structure,
88 * other than rcuname, which comes from the rcu_state structure, and event,
89 * which is one of the following:
91 * "Startleaf": Request a nocb grace period based on leaf-node data.
92 * "Startedleaf": Leaf-node start proved sufficient.
93 * "Startedleafroot": Leaf-node start proved sufficient after checking root.
94 * "Startedroot": Requested a nocb grace period based on root-node data.
95 * "StartWait": Start waiting for the requested grace period.
96 * "ResumeWait": Resume waiting after signal.
97 * "EndWait": Complete wait.
98 * "Cleanup": Clean up rcu_node structure after previous GP.
99 * "CleanupMore": Clean up, and another no-CB GP is needed.
101 TRACE_EVENT(rcu_future_grace_period
,
103 TP_PROTO(const char *rcuname
, unsigned long gpnum
, unsigned long completed
,
104 unsigned long c
, u8 level
, int grplo
, int grphi
,
105 const char *gpevent
),
107 TP_ARGS(rcuname
, gpnum
, completed
, c
, level
, grplo
, grphi
, gpevent
),
110 __field(const char *, rcuname
)
111 __field(unsigned long, gpnum
)
112 __field(unsigned long, completed
)
113 __field(unsigned long, c
)
117 __field(const char *, gpevent
)
121 __entry
->rcuname
= rcuname
;
122 __entry
->gpnum
= gpnum
;
123 __entry
->completed
= completed
;
125 __entry
->level
= level
;
126 __entry
->grplo
= grplo
;
127 __entry
->grphi
= grphi
;
128 __entry
->gpevent
= gpevent
;
131 TP_printk("%s %lu %lu %lu %u %d %d %s",
132 __entry
->rcuname
, __entry
->gpnum
, __entry
->completed
,
133 __entry
->c
, __entry
->level
, __entry
->grplo
, __entry
->grphi
,
138 * Tracepoint for grace-period-initialization events. These are
139 * distinguished by the type of RCU, the new grace-period number, the
140 * rcu_node structure level, the starting and ending CPU covered by the
141 * rcu_node structure, and the mask of CPUs that will be waited for.
142 * All but the type of RCU are extracted from the rcu_node structure.
144 TRACE_EVENT(rcu_grace_period_init
,
146 TP_PROTO(const char *rcuname
, unsigned long gpnum
, u8 level
,
147 int grplo
, int grphi
, unsigned long qsmask
),
149 TP_ARGS(rcuname
, gpnum
, level
, grplo
, grphi
, qsmask
),
152 __field(const char *, rcuname
)
153 __field(unsigned long, gpnum
)
157 __field(unsigned long, qsmask
)
161 __entry
->rcuname
= rcuname
;
162 __entry
->gpnum
= gpnum
;
163 __entry
->level
= level
;
164 __entry
->grplo
= grplo
;
165 __entry
->grphi
= grphi
;
166 __entry
->qsmask
= qsmask
;
169 TP_printk("%s %lu %u %d %d %lx",
170 __entry
->rcuname
, __entry
->gpnum
, __entry
->level
,
171 __entry
->grplo
, __entry
->grphi
, __entry
->qsmask
)
175 * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended
176 * to assist debugging of these handoffs.
178 * The first argument is the name of the RCU flavor, and the second is
179 * the number of the offloaded CPU are extracted. The third and final
180 * argument is a string as follows:
182 * "WakeEmpty": Wake rcuo kthread, first CB to empty list.
183 * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list.
184 * "WakeOvf": Wake rcuo kthread, CB list is huge.
185 * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge.
186 * "WakeNot": Don't wake rcuo kthread.
187 * "WakeNotPoll": Don't wake rcuo kthread because it is polling.
188 * "DeferredWake": Carried out the "IsDeferred" wakeup.
189 * "Poll": Start of new polling cycle for rcu_nocb_poll.
190 * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll.
191 * "WokeEmpty": rcuo kthread woke to find empty list.
192 * "WokeNonEmpty": rcuo kthread woke to find non-empty list.
193 * "WaitQueue": Enqueue partially done, timed wait for it to complete.
194 * "WokeQueue": Partial enqueue now complete.
196 TRACE_EVENT(rcu_nocb_wake
,
198 TP_PROTO(const char *rcuname
, int cpu
, const char *reason
),
200 TP_ARGS(rcuname
, cpu
, reason
),
203 __field(const char *, rcuname
)
205 __field(const char *, reason
)
209 __entry
->rcuname
= rcuname
;
211 __entry
->reason
= reason
;
214 TP_printk("%s %d %s", __entry
->rcuname
, __entry
->cpu
, __entry
->reason
)
218 * Tracepoint for tasks blocking within preemptible-RCU read-side
219 * critical sections. Track the type of RCU (which one day might
220 * include SRCU), the grace-period number that the task is blocking
221 * (the current or the next), and the task's PID.
223 TRACE_EVENT(rcu_preempt_task
,
225 TP_PROTO(const char *rcuname
, int pid
, unsigned long gpnum
),
227 TP_ARGS(rcuname
, pid
, gpnum
),
230 __field(const char *, rcuname
)
231 __field(unsigned long, gpnum
)
236 __entry
->rcuname
= rcuname
;
237 __entry
->gpnum
= gpnum
;
241 TP_printk("%s %lu %d",
242 __entry
->rcuname
, __entry
->gpnum
, __entry
->pid
)
246 * Tracepoint for tasks that blocked within a given preemptible-RCU
247 * read-side critical section exiting that critical section. Track the
248 * type of RCU (which one day might include SRCU) and the task's PID.
250 TRACE_EVENT(rcu_unlock_preempted_task
,
252 TP_PROTO(const char *rcuname
, unsigned long gpnum
, int pid
),
254 TP_ARGS(rcuname
, gpnum
, pid
),
257 __field(const char *, rcuname
)
258 __field(unsigned long, gpnum
)
263 __entry
->rcuname
= rcuname
;
264 __entry
->gpnum
= gpnum
;
268 TP_printk("%s %lu %d", __entry
->rcuname
, __entry
->gpnum
, __entry
->pid
)
272 * Tracepoint for quiescent-state-reporting events. These are
273 * distinguished by the type of RCU, the grace-period number, the
274 * mask of quiescent lower-level entities, the rcu_node structure level,
275 * the starting and ending CPU covered by the rcu_node structure, and
276 * whether there are any blocked tasks blocking the current grace period.
277 * All but the type of RCU are extracted from the rcu_node structure.
279 TRACE_EVENT(rcu_quiescent_state_report
,
281 TP_PROTO(const char *rcuname
, unsigned long gpnum
,
282 unsigned long mask
, unsigned long qsmask
,
283 u8 level
, int grplo
, int grphi
, int gp_tasks
),
285 TP_ARGS(rcuname
, gpnum
, mask
, qsmask
, level
, grplo
, grphi
, gp_tasks
),
288 __field(const char *, rcuname
)
289 __field(unsigned long, gpnum
)
290 __field(unsigned long, mask
)
291 __field(unsigned long, qsmask
)
295 __field(u8
, gp_tasks
)
299 __entry
->rcuname
= rcuname
;
300 __entry
->gpnum
= gpnum
;
301 __entry
->mask
= mask
;
302 __entry
->qsmask
= qsmask
;
303 __entry
->level
= level
;
304 __entry
->grplo
= grplo
;
305 __entry
->grphi
= grphi
;
306 __entry
->gp_tasks
= gp_tasks
;
309 TP_printk("%s %lu %lx>%lx %u %d %d %u",
310 __entry
->rcuname
, __entry
->gpnum
,
311 __entry
->mask
, __entry
->qsmask
, __entry
->level
,
312 __entry
->grplo
, __entry
->grphi
, __entry
->gp_tasks
)
316 * Tracepoint for quiescent states detected by force_quiescent_state().
317 * These trace events include the type of RCU, the grace-period number
318 * that was blocked by the CPU, the CPU itself, and the type of quiescent
319 * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline,
320 * or "kick" when kicking a CPU that has been in dyntick-idle mode for
325 TP_PROTO(const char *rcuname
, unsigned long gpnum
, int cpu
, const char *qsevent
),
327 TP_ARGS(rcuname
, gpnum
, cpu
, qsevent
),
330 __field(const char *, rcuname
)
331 __field(unsigned long, gpnum
)
333 __field(const char *, qsevent
)
337 __entry
->rcuname
= rcuname
;
338 __entry
->gpnum
= gpnum
;
340 __entry
->qsevent
= qsevent
;
343 TP_printk("%s %lu %d %s",
344 __entry
->rcuname
, __entry
->gpnum
,
345 __entry
->cpu
, __entry
->qsevent
)
348 #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */
351 * Tracepoint for dyntick-idle entry/exit events. These take a string
352 * as argument: "Start" for entering dyntick-idle mode, "End" for
353 * leaving it, "--=" for events moving towards idle, and "++=" for events
354 * moving away from idle. "Error on entry: not idle task" and "Error on
355 * exit: not idle task" indicate that a non-idle task is erroneously
356 * toying with the idle loop.
358 * These events also take a pair of numbers, which indicate the nesting
359 * depth before and after the event of interest. Note that task-related
360 * events use the upper bits of each number, while interrupt-related
361 * events use the lower bits.
363 TRACE_EVENT(rcu_dyntick
,
365 TP_PROTO(const char *polarity
, long long oldnesting
, long long newnesting
),
367 TP_ARGS(polarity
, oldnesting
, newnesting
),
370 __field(const char *, polarity
)
371 __field(long long, oldnesting
)
372 __field(long long, newnesting
)
376 __entry
->polarity
= polarity
;
377 __entry
->oldnesting
= oldnesting
;
378 __entry
->newnesting
= newnesting
;
381 TP_printk("%s %llx %llx", __entry
->polarity
,
382 __entry
->oldnesting
, __entry
->newnesting
)
386 * Tracepoint for RCU preparation for idle, the goal being to get RCU
387 * processing done so that the current CPU can shut off its scheduling
388 * clock and enter dyntick-idle mode. One way to accomplish this is
389 * to drain all RCU callbacks from this CPU, and the other is to have
390 * done everything RCU requires for the current grace period. In this
391 * latter case, the CPU will be awakened at the end of the current grace
392 * period in order to process the remainder of its callbacks.
394 * These tracepoints take a string as argument:
396 * "No callbacks": Nothing to do, no callbacks on this CPU.
397 * "In holdoff": Nothing to do, holding off after unsuccessful attempt.
398 * "Begin holdoff": Attempt failed, don't retry until next jiffy.
399 * "Dyntick with callbacks": Entering dyntick-idle despite callbacks.
400 * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks.
401 * "More callbacks": Still more callbacks, try again to clear them out.
402 * "Callbacks drained": All callbacks processed, off to dyntick idle!
403 * "Timer": Timer fired to cause CPU to continue processing callbacks.
404 * "Demigrate": Timer fired on wrong CPU, woke up correct CPU.
405 * "Cleanup after idle": Idle exited, timer canceled.
407 TRACE_EVENT(rcu_prep_idle
,
409 TP_PROTO(const char *reason
),
414 __field(const char *, reason
)
418 __entry
->reason
= reason
;
421 TP_printk("%s", __entry
->reason
)
425 * Tracepoint for the registration of a single RCU callback function.
426 * The first argument is the type of RCU, the second argument is
427 * a pointer to the RCU callback itself, the third element is the
428 * number of lazy callbacks queued, and the fourth element is the
429 * total number of callbacks queued.
431 TRACE_EVENT(rcu_callback
,
433 TP_PROTO(const char *rcuname
, struct rcu_head
*rhp
, long qlen_lazy
,
436 TP_ARGS(rcuname
, rhp
, qlen_lazy
, qlen
),
439 __field(const char *, rcuname
)
441 __field(void *, func
)
442 __field(long, qlen_lazy
)
447 __entry
->rcuname
= rcuname
;
449 __entry
->func
= rhp
->func
;
450 __entry
->qlen_lazy
= qlen_lazy
;
451 __entry
->qlen
= qlen
;
454 TP_printk("%s rhp=%p func=%pf %ld/%ld",
455 __entry
->rcuname
, __entry
->rhp
, __entry
->func
,
456 __entry
->qlen_lazy
, __entry
->qlen
)
460 * Tracepoint for the registration of a single RCU callback of the special
461 * kfree() form. The first argument is the RCU type, the second argument
462 * is a pointer to the RCU callback, the third argument is the offset
463 * of the callback within the enclosing RCU-protected data structure,
464 * the fourth argument is the number of lazy callbacks queued, and the
465 * fifth argument is the total number of callbacks queued.
467 TRACE_EVENT(rcu_kfree_callback
,
469 TP_PROTO(const char *rcuname
, struct rcu_head
*rhp
, unsigned long offset
,
470 long qlen_lazy
, long qlen
),
472 TP_ARGS(rcuname
, rhp
, offset
, qlen_lazy
, qlen
),
475 __field(const char *, rcuname
)
477 __field(unsigned long, offset
)
478 __field(long, qlen_lazy
)
483 __entry
->rcuname
= rcuname
;
485 __entry
->offset
= offset
;
486 __entry
->qlen_lazy
= qlen_lazy
;
487 __entry
->qlen
= qlen
;
490 TP_printk("%s rhp=%p func=%ld %ld/%ld",
491 __entry
->rcuname
, __entry
->rhp
, __entry
->offset
,
492 __entry
->qlen_lazy
, __entry
->qlen
)
496 * Tracepoint for marking the beginning rcu_do_batch, performed to start
497 * RCU callback invocation. The first argument is the RCU flavor,
498 * the second is the number of lazy callbacks queued, the third is
499 * the total number of callbacks queued, and the fourth argument is
500 * the current RCU-callback batch limit.
502 TRACE_EVENT(rcu_batch_start
,
504 TP_PROTO(const char *rcuname
, long qlen_lazy
, long qlen
, long blimit
),
506 TP_ARGS(rcuname
, qlen_lazy
, qlen
, blimit
),
509 __field(const char *, rcuname
)
510 __field(long, qlen_lazy
)
512 __field(long, blimit
)
516 __entry
->rcuname
= rcuname
;
517 __entry
->qlen_lazy
= qlen_lazy
;
518 __entry
->qlen
= qlen
;
519 __entry
->blimit
= blimit
;
522 TP_printk("%s CBs=%ld/%ld bl=%ld",
523 __entry
->rcuname
, __entry
->qlen_lazy
, __entry
->qlen
,
528 * Tracepoint for the invocation of a single RCU callback function.
529 * The first argument is the type of RCU, and the second argument is
530 * a pointer to the RCU callback itself.
532 TRACE_EVENT(rcu_invoke_callback
,
534 TP_PROTO(const char *rcuname
, struct rcu_head
*rhp
),
536 TP_ARGS(rcuname
, rhp
),
539 __field(const char *, rcuname
)
541 __field(void *, func
)
545 __entry
->rcuname
= rcuname
;
547 __entry
->func
= rhp
->func
;
550 TP_printk("%s rhp=%p func=%pf",
551 __entry
->rcuname
, __entry
->rhp
, __entry
->func
)
555 * Tracepoint for the invocation of a single RCU callback of the special
556 * kfree() form. The first argument is the RCU flavor, the second
557 * argument is a pointer to the RCU callback, and the third argument
558 * is the offset of the callback within the enclosing RCU-protected
561 TRACE_EVENT(rcu_invoke_kfree_callback
,
563 TP_PROTO(const char *rcuname
, struct rcu_head
*rhp
, unsigned long offset
),
565 TP_ARGS(rcuname
, rhp
, offset
),
568 __field(const char *, rcuname
)
570 __field(unsigned long, offset
)
574 __entry
->rcuname
= rcuname
;
576 __entry
->offset
= offset
;
579 TP_printk("%s rhp=%p func=%ld",
580 __entry
->rcuname
, __entry
->rhp
, __entry
->offset
)
584 * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
585 * invoked. The first argument is the name of the RCU flavor,
586 * the second argument is number of callbacks actually invoked,
587 * the third argument (cb) is whether or not any of the callbacks that
588 * were ready to invoke at the beginning of this batch are still
589 * queued, the fourth argument (nr) is the return value of need_resched(),
590 * the fifth argument (iit) is 1 if the current task is the idle task,
591 * and the sixth argument (risk) is the return value from
592 * rcu_is_callbacks_kthread().
594 TRACE_EVENT(rcu_batch_end
,
596 TP_PROTO(const char *rcuname
, int callbacks_invoked
,
597 char cb
, char nr
, char iit
, char risk
),
599 TP_ARGS(rcuname
, callbacks_invoked
, cb
, nr
, iit
, risk
),
602 __field(const char *, rcuname
)
603 __field(int, callbacks_invoked
)
611 __entry
->rcuname
= rcuname
;
612 __entry
->callbacks_invoked
= callbacks_invoked
;
616 __entry
->risk
= risk
;
619 TP_printk("%s CBs-invoked=%d idle=%c%c%c%c",
620 __entry
->rcuname
, __entry
->callbacks_invoked
,
621 __entry
->cb
? 'C' : '.',
622 __entry
->nr
? 'S' : '.',
623 __entry
->iit
? 'I' : '.',
624 __entry
->risk
? 'R' : '.')
628 * Tracepoint for rcutorture readers. The first argument is the name
629 * of the RCU flavor from rcutorture's viewpoint and the second argument
630 * is the callback address.
632 TRACE_EVENT(rcu_torture_read
,
634 TP_PROTO(const char *rcutorturename
, struct rcu_head
*rhp
,
635 unsigned long secs
, unsigned long c_old
, unsigned long c
),
637 TP_ARGS(rcutorturename
, rhp
, secs
, c_old
, c
),
640 __field(const char *, rcutorturename
)
641 __field(struct rcu_head
*, rhp
)
642 __field(unsigned long, secs
)
643 __field(unsigned long, c_old
)
644 __field(unsigned long, c
)
648 __entry
->rcutorturename
= rcutorturename
;
650 __entry
->secs
= secs
;
651 __entry
->c_old
= c_old
;
655 TP_printk("%s torture read %p %luus c: %lu %lu",
656 __entry
->rcutorturename
, __entry
->rhp
,
657 __entry
->secs
, __entry
->c_old
, __entry
->c
)
661 * Tracepoint for _rcu_barrier() execution. The string "s" describes
662 * the _rcu_barrier phase:
663 * "Begin": _rcu_barrier() started.
664 * "EarlyExit": _rcu_barrier() piggybacked, thus early exit.
665 * "Inc1": _rcu_barrier() piggyback check counter incremented.
666 * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU
667 * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU.
668 * "OnlineQ": _rcu_barrier() found online CPU with callbacks.
669 * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks.
670 * "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
671 * "CB": An rcu_barrier_callback() invoked a callback, not the last.
672 * "LastCB": An rcu_barrier_callback() invoked the last callback.
673 * "Inc2": _rcu_barrier() piggyback check counter incremented.
674 * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
675 * is the count of remaining callbacks, and "done" is the piggybacking count.
677 TRACE_EVENT(rcu_barrier
,
679 TP_PROTO(const char *rcuname
, const char *s
, int cpu
, int cnt
, unsigned long done
),
681 TP_ARGS(rcuname
, s
, cpu
, cnt
, done
),
684 __field(const char *, rcuname
)
685 __field(const char *, s
)
688 __field(unsigned long, done
)
692 __entry
->rcuname
= rcuname
;
696 __entry
->done
= done
;
699 TP_printk("%s %s cpu %d remaining %d # %lu",
700 __entry
->rcuname
, __entry
->s
, __entry
->cpu
, __entry
->cnt
,
704 #else /* #ifdef CONFIG_RCU_TRACE */
706 #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
707 #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
708 qsmask) do { } while (0)
709 #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \
710 level, grplo, grphi, event) \
712 #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
713 #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
714 #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
715 #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
716 grplo, grphi, gp_tasks) do { } \
718 #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
719 #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
720 #define trace_rcu_prep_idle(reason) do { } while (0)
721 #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
722 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
724 #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
726 #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
727 #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
728 #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
730 #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
732 #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
734 #endif /* #else #ifdef CONFIG_RCU_TRACE */
736 #endif /* _TRACE_RCU_H */
738 /* This part must be outside protection */
739 #include <trace/define_trace.h>