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 expedited grace-period events. Takes a string identifying
176 * the RCU flavor, the expedited grace-period sequence number, and a string
177 * identifying the grace-period-related event as follows:
179 * "snap": Captured snapshot of expedited grace period sequence number.
180 * "start": Started a real expedited grace period.
181 * "end": Ended a real expedited grace period.
182 * "done": Someone else did the expedited grace period for us.
184 TRACE_EVENT(rcu_exp_grace_period,
186 TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent),
188 TP_ARGS(rcuname, gpseq, gpevent),
191 __field(const char *, rcuname)
192 __field(unsigned long, gpseq)
193 __field(const char *, gpevent)
197 __entry->rcuname = rcuname;
198 __entry->gpseq = gpseq;
199 __entry->gpevent = gpevent;
202 TP_printk("%s %lu %s",
203 __entry->rcuname, __entry->gpseq, __entry->gpevent)
207 * Tracepoint for expedited grace-period funnel-locking events. Takes a
208 * string identifying the RCU flavor, an integer identifying the rcu_node
209 * combining-tree level, another pair of integers identifying the lowest-
210 * and highest-numbered CPU associated with the current rcu_node structure,
211 * and a string. identifying the grace-period-related event as follows:
213 * "acq": Acquired a level of funnel lock
214 * "rel": Released a level of funnel lock
216 TRACE_EVENT(rcu_exp_funnel_lock,
218 TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi,
219 const char *gpevent),
221 TP_ARGS(rcuname, level, grplo, grphi, gpevent),
224 __field(const char *, rcuname)
228 __field(const char *, gpevent)
232 __entry->rcuname = rcuname;
233 __entry->level = level;
234 __entry->grplo = grplo;
235 __entry->grphi = grphi;
236 __entry->gpevent = gpevent;
239 TP_printk("%s %d %d %d %s",
240 __entry->rcuname, __entry->level, __entry->grplo,
241 __entry->grphi, __entry->gpevent)
245 * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended
246 * to assist debugging of these handoffs.
248 * The first argument is the name of the RCU flavor, and the second is
249 * the number of the offloaded CPU are extracted. The third and final
250 * argument is a string as follows:
252 * "WakeEmpty": Wake rcuo kthread, first CB to empty list.
253 * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list.
254 * "WakeOvf": Wake rcuo kthread, CB list is huge.
255 * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge.
256 * "WakeNot": Don't wake rcuo kthread.
257 * "WakeNotPoll": Don't wake rcuo kthread because it is polling.
258 * "DeferredWake": Carried out the "IsDeferred" wakeup.
259 * "Poll": Start of new polling cycle for rcu_nocb_poll.
260 * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll.
261 * "WokeEmpty": rcuo kthread woke to find empty list.
262 * "WokeNonEmpty": rcuo kthread woke to find non-empty list.
263 * "WaitQueue": Enqueue partially done, timed wait for it to complete.
264 * "WokeQueue": Partial enqueue now complete.
266 TRACE_EVENT(rcu_nocb_wake,
268 TP_PROTO(const char *rcuname, int cpu, const char *reason),
270 TP_ARGS(rcuname, cpu, reason),
273 __field(const char *, rcuname)
275 __field(const char *, reason)
279 __entry->rcuname = rcuname;
281 __entry->reason = reason;
284 TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason)
288 * Tracepoint for tasks blocking within preemptible-RCU read-side
289 * critical sections. Track the type of RCU (which one day might
290 * include SRCU), the grace-period number that the task is blocking
291 * (the current or the next), and the task's PID.
293 TRACE_EVENT(rcu_preempt_task,
295 TP_PROTO(const char *rcuname, int pid, unsigned long gpnum),
297 TP_ARGS(rcuname, pid, gpnum),
300 __field(const char *, rcuname)
301 __field(unsigned long, gpnum)
306 __entry->rcuname = rcuname;
307 __entry->gpnum = gpnum;
311 TP_printk("%s %lu %d",
312 __entry->rcuname, __entry->gpnum, __entry->pid)
316 * Tracepoint for tasks that blocked within a given preemptible-RCU
317 * read-side critical section exiting that critical section. Track the
318 * type of RCU (which one day might include SRCU) and the task's PID.
320 TRACE_EVENT(rcu_unlock_preempted_task,
322 TP_PROTO(const char *rcuname, unsigned long gpnum, int pid),
324 TP_ARGS(rcuname, gpnum, pid),
327 __field(const char *, rcuname)
328 __field(unsigned long, gpnum)
333 __entry->rcuname = rcuname;
334 __entry->gpnum = gpnum;
338 TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid)
342 * Tracepoint for quiescent-state-reporting events. These are
343 * distinguished by the type of RCU, the grace-period number, the
344 * mask of quiescent lower-level entities, the rcu_node structure level,
345 * the starting and ending CPU covered by the rcu_node structure, and
346 * whether there are any blocked tasks blocking the current grace period.
347 * All but the type of RCU are extracted from the rcu_node structure.
349 TRACE_EVENT(rcu_quiescent_state_report,
351 TP_PROTO(const char *rcuname, unsigned long gpnum,
352 unsigned long mask, unsigned long qsmask,
353 u8 level, int grplo, int grphi, int gp_tasks),
355 TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks),
358 __field(const char *, rcuname)
359 __field(unsigned long, gpnum)
360 __field(unsigned long, mask)
361 __field(unsigned long, qsmask)
365 __field(u8, gp_tasks)
369 __entry->rcuname = rcuname;
370 __entry->gpnum = gpnum;
371 __entry->mask = mask;
372 __entry->qsmask = qsmask;
373 __entry->level = level;
374 __entry->grplo = grplo;
375 __entry->grphi = grphi;
376 __entry->gp_tasks = gp_tasks;
379 TP_printk("%s %lu %lx>%lx %u %d %d %u",
380 __entry->rcuname, __entry->gpnum,
381 __entry->mask, __entry->qsmask, __entry->level,
382 __entry->grplo, __entry->grphi, __entry->gp_tasks)
386 * Tracepoint for quiescent states detected by force_quiescent_state().
387 * These trace events include the type of RCU, the grace-period number
388 * that was blocked by the CPU, the CPU itself, and the type of quiescent
389 * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline,
390 * or "kick" when kicking a CPU that has been in dyntick-idle mode for
395 TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent),
397 TP_ARGS(rcuname, gpnum, cpu, qsevent),
400 __field(const char *, rcuname)
401 __field(unsigned long, gpnum)
403 __field(const char *, qsevent)
407 __entry->rcuname = rcuname;
408 __entry->gpnum = gpnum;
410 __entry->qsevent = qsevent;
413 TP_printk("%s %lu %d %s",
414 __entry->rcuname, __entry->gpnum,
415 __entry->cpu, __entry->qsevent)
418 #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */
421 * Tracepoint for dyntick-idle entry/exit events. These take a string
422 * as argument: "Start" for entering dyntick-idle mode, "End" for
423 * leaving it, "--=" for events moving towards idle, and "++=" for events
424 * moving away from idle. "Error on entry: not idle task" and "Error on
425 * exit: not idle task" indicate that a non-idle task is erroneously
426 * toying with the idle loop.
428 * These events also take a pair of numbers, which indicate the nesting
429 * depth before and after the event of interest. Note that task-related
430 * events use the upper bits of each number, while interrupt-related
431 * events use the lower bits.
433 TRACE_EVENT(rcu_dyntick,
435 TP_PROTO(const char *polarity, long long oldnesting, long long newnesting),
437 TP_ARGS(polarity, oldnesting, newnesting),
440 __field(const char *, polarity)
441 __field(long long, oldnesting)
442 __field(long long, newnesting)
446 __entry->polarity = polarity;
447 __entry->oldnesting = oldnesting;
448 __entry->newnesting = newnesting;
451 TP_printk("%s %llx %llx", __entry->polarity,
452 __entry->oldnesting, __entry->newnesting)
456 * Tracepoint for RCU preparation for idle, the goal being to get RCU
457 * processing done so that the current CPU can shut off its scheduling
458 * clock and enter dyntick-idle mode. One way to accomplish this is
459 * to drain all RCU callbacks from this CPU, and the other is to have
460 * done everything RCU requires for the current grace period. In this
461 * latter case, the CPU will be awakened at the end of the current grace
462 * period in order to process the remainder of its callbacks.
464 * These tracepoints take a string as argument:
466 * "No callbacks": Nothing to do, no callbacks on this CPU.
467 * "In holdoff": Nothing to do, holding off after unsuccessful attempt.
468 * "Begin holdoff": Attempt failed, don't retry until next jiffy.
469 * "Dyntick with callbacks": Entering dyntick-idle despite callbacks.
470 * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks.
471 * "More callbacks": Still more callbacks, try again to clear them out.
472 * "Callbacks drained": All callbacks processed, off to dyntick idle!
473 * "Timer": Timer fired to cause CPU to continue processing callbacks.
474 * "Demigrate": Timer fired on wrong CPU, woke up correct CPU.
475 * "Cleanup after idle": Idle exited, timer canceled.
477 TRACE_EVENT(rcu_prep_idle,
479 TP_PROTO(const char *reason),
484 __field(const char *, reason)
488 __entry->reason = reason;
491 TP_printk("%s", __entry->reason)
495 * Tracepoint for the registration of a single RCU callback function.
496 * The first argument is the type of RCU, the second argument is
497 * a pointer to the RCU callback itself, the third element is the
498 * number of lazy callbacks queued, and the fourth element is the
499 * total number of callbacks queued.
501 TRACE_EVENT(rcu_callback,
503 TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
506 TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
509 __field(const char *, rcuname)
511 __field(void *, func)
512 __field(long, qlen_lazy)
517 __entry->rcuname = rcuname;
519 __entry->func = rhp->func;
520 __entry->qlen_lazy = qlen_lazy;
521 __entry->qlen = qlen;
524 TP_printk("%s rhp=%p func=%pf %ld/%ld",
525 __entry->rcuname, __entry->rhp, __entry->func,
526 __entry->qlen_lazy, __entry->qlen)
530 * Tracepoint for the registration of a single RCU callback of the special
531 * kfree() form. The first argument is the RCU type, the second argument
532 * is a pointer to the RCU callback, the third argument is the offset
533 * of the callback within the enclosing RCU-protected data structure,
534 * the fourth argument is the number of lazy callbacks queued, and the
535 * fifth argument is the total number of callbacks queued.
537 TRACE_EVENT(rcu_kfree_callback,
539 TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
540 long qlen_lazy, long qlen),
542 TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
545 __field(const char *, rcuname)
547 __field(unsigned long, offset)
548 __field(long, qlen_lazy)
553 __entry->rcuname = rcuname;
555 __entry->offset = offset;
556 __entry->qlen_lazy = qlen_lazy;
557 __entry->qlen = qlen;
560 TP_printk("%s rhp=%p func=%ld %ld/%ld",
561 __entry->rcuname, __entry->rhp, __entry->offset,
562 __entry->qlen_lazy, __entry->qlen)
566 * Tracepoint for marking the beginning rcu_do_batch, performed to start
567 * RCU callback invocation. The first argument is the RCU flavor,
568 * the second is the number of lazy callbacks queued, the third is
569 * the total number of callbacks queued, and the fourth argument is
570 * the current RCU-callback batch limit.
572 TRACE_EVENT(rcu_batch_start,
574 TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
576 TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
579 __field(const char *, rcuname)
580 __field(long, qlen_lazy)
582 __field(long, blimit)
586 __entry->rcuname = rcuname;
587 __entry->qlen_lazy = qlen_lazy;
588 __entry->qlen = qlen;
589 __entry->blimit = blimit;
592 TP_printk("%s CBs=%ld/%ld bl=%ld",
593 __entry->rcuname, __entry->qlen_lazy, __entry->qlen,
598 * Tracepoint for the invocation of a single RCU callback function.
599 * The first argument is the type of RCU, and the second argument is
600 * a pointer to the RCU callback itself.
602 TRACE_EVENT(rcu_invoke_callback,
604 TP_PROTO(const char *rcuname, struct rcu_head *rhp),
606 TP_ARGS(rcuname, rhp),
609 __field(const char *, rcuname)
611 __field(void *, func)
615 __entry->rcuname = rcuname;
617 __entry->func = rhp->func;
620 TP_printk("%s rhp=%p func=%pf",
621 __entry->rcuname, __entry->rhp, __entry->func)
625 * Tracepoint for the invocation of a single RCU callback of the special
626 * kfree() form. The first argument is the RCU flavor, the second
627 * argument is a pointer to the RCU callback, and the third argument
628 * is the offset of the callback within the enclosing RCU-protected
631 TRACE_EVENT(rcu_invoke_kfree_callback,
633 TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
635 TP_ARGS(rcuname, rhp, offset),
638 __field(const char *, rcuname)
640 __field(unsigned long, offset)
644 __entry->rcuname = rcuname;
646 __entry->offset = offset;
649 TP_printk("%s rhp=%p func=%ld",
650 __entry->rcuname, __entry->rhp, __entry->offset)
654 * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
655 * invoked. The first argument is the name of the RCU flavor,
656 * the second argument is number of callbacks actually invoked,
657 * the third argument (cb) is whether or not any of the callbacks that
658 * were ready to invoke at the beginning of this batch are still
659 * queued, the fourth argument (nr) is the return value of need_resched(),
660 * the fifth argument (iit) is 1 if the current task is the idle task,
661 * and the sixth argument (risk) is the return value from
662 * rcu_is_callbacks_kthread().
664 TRACE_EVENT(rcu_batch_end,
666 TP_PROTO(const char *rcuname, int callbacks_invoked,
667 char cb, char nr, char iit, char risk),
669 TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
672 __field(const char *, rcuname)
673 __field(int, callbacks_invoked)
681 __entry->rcuname = rcuname;
682 __entry->callbacks_invoked = callbacks_invoked;
686 __entry->risk = risk;
689 TP_printk("%s CBs-invoked=%d idle=%c%c%c%c",
690 __entry->rcuname, __entry->callbacks_invoked,
691 __entry->cb ? 'C' : '.',
692 __entry->nr ? 'S' : '.',
693 __entry->iit ? 'I' : '.',
694 __entry->risk ? 'R' : '.')
698 * Tracepoint for rcutorture readers. The first argument is the name
699 * of the RCU flavor from rcutorture's viewpoint and the second argument
700 * is the callback address.
702 TRACE_EVENT(rcu_torture_read,
704 TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
705 unsigned long secs, unsigned long c_old, unsigned long c),
707 TP_ARGS(rcutorturename, rhp, secs, c_old, c),
710 __field(const char *, rcutorturename)
711 __field(struct rcu_head *, rhp)
712 __field(unsigned long, secs)
713 __field(unsigned long, c_old)
714 __field(unsigned long, c)
718 __entry->rcutorturename = rcutorturename;
720 __entry->secs = secs;
721 __entry->c_old = c_old;
725 TP_printk("%s torture read %p %luus c: %lu %lu",
726 __entry->rcutorturename, __entry->rhp,
727 __entry->secs, __entry->c_old, __entry->c)
731 * Tracepoint for _rcu_barrier() execution. The string "s" describes
732 * the _rcu_barrier phase:
733 * "Begin": _rcu_barrier() started.
734 * "EarlyExit": _rcu_barrier() piggybacked, thus early exit.
735 * "Inc1": _rcu_barrier() piggyback check counter incremented.
736 * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU
737 * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU.
738 * "OnlineQ": _rcu_barrier() found online CPU with callbacks.
739 * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks.
740 * "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
741 * "CB": An rcu_barrier_callback() invoked a callback, not the last.
742 * "LastCB": An rcu_barrier_callback() invoked the last callback.
743 * "Inc2": _rcu_barrier() piggyback check counter incremented.
744 * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
745 * is the count of remaining callbacks, and "done" is the piggybacking count.
747 TRACE_EVENT(rcu_barrier,
749 TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
751 TP_ARGS(rcuname, s, cpu, cnt, done),
754 __field(const char *, rcuname)
755 __field(const char *, s)
758 __field(unsigned long, done)
762 __entry->rcuname = rcuname;
766 __entry->done = done;
769 TP_printk("%s %s cpu %d remaining %d # %lu",
770 __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt,
774 #else /* #ifdef CONFIG_RCU_TRACE */
776 #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
777 #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \
778 level, grplo, grphi, event) \
780 #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
781 qsmask) do { } while (0)
782 #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \
784 #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \
786 #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
787 #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
788 #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
789 #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
790 grplo, grphi, gp_tasks) do { } \
792 #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
793 #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
794 #define trace_rcu_prep_idle(reason) do { } while (0)
795 #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
796 #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
798 #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
800 #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
801 #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
802 #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
804 #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
806 #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
808 #endif /* #else #ifdef CONFIG_RCU_TRACE */
810 #endif /* _TRACE_RCU_H */
812 /* This part must be outside protection */
813 #include <trace/define_trace.h>