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2024-09-20 cf4ce59b3b70238352c7f1729f0f7223214828ad 
 kernel/include/trace/events/rcu.h
....@@ -7,6 +7,12 @@
77 
88 #include <linux/tracepoint.h>
99 
10
+#ifdef CONFIG_RCU_TRACE
11
+#define TRACE_EVENT_RCU TRACE_EVENT
12
+#else
13
+#define TRACE_EVENT_RCU TRACE_EVENT_NOP
14
+#endif
15
+
1016 /*
1117  * Tracepoint for start/end markers used for utilization calculations.
1218  * By convention, the string is of the following forms:
....@@ -35,9 +41,7 @@
3541 	TP_printk("%s", __entry->s)
3642 );
3743 
38
-#ifdef CONFIG_RCU_TRACE
39
-
40
-#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU)
44
+#if defined(CONFIG_TREE_RCU)
4145 
4246 /*
4347  * Tracepoint for grace-period events.  Takes a string identifying the
....@@ -62,7 +66,7 @@
6266  *	"end": End a grace period.
6367  *	"cpuend": CPU first notices a grace-period end.
6468  */
65
-TRACE_EVENT(rcu_grace_period,
69
+TRACE_EVENT_RCU(rcu_grace_period,
6670 
6771 	TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent),
6872 
....@@ -70,17 +74,17 @@
7074 
7175 	TP_STRUCT__entry(
7276 		__field(const char *, rcuname)
73
-		__field(unsigned long, gp_seq)
77
+		__field(long, gp_seq)
7478 		__field(const char *, gpevent)
7579 	),
7680 
7781 	TP_fast_assign(
7882 		__entry->rcuname = rcuname;
79
-		__entry->gp_seq = gp_seq;
83
+		__entry->gp_seq = (long)gp_seq;
8084 		__entry->gpevent = gpevent;
8185 	),
8286 
83
-	TP_printk("%s %lu %s",
87
+	TP_printk("%s %ld %s",
8488 		  __entry->rcuname, __entry->gp_seq, __entry->gpevent)
8589 );
8690 
....@@ -89,19 +93,18 @@
8993  * the data from the rcu_node structure, other than rcuname, which comes
9094  * from the rcu_state structure, and event, which is one of the following:
9195  *
92
- * "Startleaf": Request a grace period based on leaf-node data.
96
+ * "Cleanup": Clean up rcu_node structure after previous GP.
97
+ * "CleanupMore": Clean up, and another GP is needed.
98
+ * "EndWait": Complete wait.
99
+ * "NoGPkthread": The RCU grace-period kthread has not yet started.
93100  * "Prestarted": Someone beat us to the request
94101  * "Startedleaf": Leaf node marked for future GP.
95102  * "Startedleafroot": All nodes from leaf to root marked for future GP.
96103  * "Startedroot": Requested a nocb grace period based on root-node data.
97
- * "NoGPkthread": The RCU grace-period kthread has not yet started.
104
+ * "Startleaf": Request a grace period based on leaf-node data.
98105  * "StartWait": Start waiting for the requested grace period.
99
- * "ResumeWait": Resume waiting after signal.
100
- * "EndWait": Complete wait.
101
- * "Cleanup": Clean up rcu_node structure after previous GP.
102
- * "CleanupMore": Clean up, and another GP is needed.
103106  */
104
-TRACE_EVENT(rcu_future_grace_period,
107
+TRACE_EVENT_RCU(rcu_future_grace_period,
105108 
106109 	TP_PROTO(const char *rcuname, unsigned long gp_seq,
107110 		 unsigned long gp_seq_req, u8 level, int grplo, int grphi,
....@@ -111,8 +114,8 @@
111114 
112115 	TP_STRUCT__entry(
113116 		__field(const char *, rcuname)
114
-		__field(unsigned long, gp_seq)
115
-		__field(unsigned long, gp_seq_req)
117
+		__field(long, gp_seq)
118
+		__field(long, gp_seq_req)
116119 		__field(u8, level)
117120 		__field(int, grplo)
118121 		__field(int, grphi)
....@@ -121,16 +124,16 @@
121124 
122125 	TP_fast_assign(
123126 		__entry->rcuname = rcuname;
124
-		__entry->gp_seq = gp_seq;
125
-		__entry->gp_seq_req = gp_seq_req;
127
+		__entry->gp_seq = (long)gp_seq;
128
+		__entry->gp_seq_req = (long)gp_seq_req;
126129 		__entry->level = level;
127130 		__entry->grplo = grplo;
128131 		__entry->grphi = grphi;
129132 		__entry->gpevent = gpevent;
130133 	),
131134 
132
-	TP_printk("%s %lu %lu %u %d %d %s",
133
-		  __entry->rcuname, __entry->gp_seq, __entry->gp_seq_req, __entry->level,
135
+	TP_printk("%s %ld %ld %u %d %d %s",
136
+		  __entry->rcuname, (long)__entry->gp_seq, (long)__entry->gp_seq_req, __entry->level,
134137 		  __entry->grplo, __entry->grphi, __entry->gpevent)
135138 );
136139 
....@@ -141,7 +144,7 @@
141144  * rcu_node structure, and the mask of CPUs that will be waited for.
142145  * All but the type of RCU are extracted from the rcu_node structure.
143146  */
144
-TRACE_EVENT(rcu_grace_period_init,
147
+TRACE_EVENT_RCU(rcu_grace_period_init,
145148 
146149 	TP_PROTO(const char *rcuname, unsigned long gp_seq, u8 level,
147150 		 int grplo, int grphi, unsigned long qsmask),
....@@ -150,7 +153,7 @@
150153 
151154 	TP_STRUCT__entry(
152155 		__field(const char *, rcuname)
153
-		__field(unsigned long, gp_seq)
156
+		__field(long, gp_seq)
154157 		__field(u8, level)
155158 		__field(int, grplo)
156159 		__field(int, grphi)
....@@ -159,14 +162,14 @@
159162 
160163 	TP_fast_assign(
161164 		__entry->rcuname = rcuname;
162
-		__entry->gp_seq = gp_seq;
165
+		__entry->gp_seq = (long)gp_seq;
163166 		__entry->level = level;
164167 		__entry->grplo = grplo;
165168 		__entry->grphi = grphi;
166169 		__entry->qsmask = qsmask;
167170 	),
168171 
169
-	TP_printk("%s %lu %u %d %d %lx",
172
+	TP_printk("%s %ld %u %d %d %lx",
170173 		  __entry->rcuname, __entry->gp_seq, __entry->level,
171174 		  __entry->grplo, __entry->grphi, __entry->qsmask)
172175 );
....@@ -186,7 +189,7 @@
186189  *	"endwake": Woke piggybackers up.
187190  *	"done": Someone else did the expedited grace period for us.
188191  */
189
-TRACE_EVENT(rcu_exp_grace_period,
192
+TRACE_EVENT_RCU(rcu_exp_grace_period,
190193 
191194 	TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent),
192195 
....@@ -194,17 +197,17 @@
194197 
195198 	TP_STRUCT__entry(
196199 		__field(const char *, rcuname)
197
-		__field(unsigned long, gpseq)
200
+		__field(long, gpseq)
198201 		__field(const char *, gpevent)
199202 	),
200203 
201204 	TP_fast_assign(
202205 		__entry->rcuname = rcuname;
203
-		__entry->gpseq = gpseq;
206
+		__entry->gpseq = (long)gpseq;
204207 		__entry->gpevent = gpevent;
205208 	),
206209 
207
-	TP_printk("%s %lu %s",
210
+	TP_printk("%s %ld %s",
208211 		  __entry->rcuname, __entry->gpseq, __entry->gpevent)
209212 );
210213 
....@@ -218,7 +221,7 @@
218221  *	"nxtlvl": Advance to next level of rcu_node funnel
219222  *	"wait": Wait for someone else to do expedited GP
220223  */
221
-TRACE_EVENT(rcu_exp_funnel_lock,
224
+TRACE_EVENT_RCU(rcu_exp_funnel_lock,
222225 
223226 	TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi,
224227 		 const char *gpevent),
....@@ -255,21 +258,29 @@
255258  * the number of the offloaded CPU are extracted.  The third and final
256259  * argument is a string as follows:
257260  *
258
- *	"WakeEmpty": Wake rcuo kthread, first CB to empty list.
259
- *	"WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list.
260
- *	"WakeOvf": Wake rcuo kthread, CB list is huge.
261
- *	"WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge.
262
- *	"WakeNot": Don't wake rcuo kthread.
263
- *	"WakeNotPoll": Don't wake rcuo kthread because it is polling.
264
- *	"DeferredWake": Carried out the "IsDeferred" wakeup.
265
- *	"Poll": Start of new polling cycle for rcu_nocb_poll.
266
- *	"Sleep": Sleep waiting for CBs for !rcu_nocb_poll.
267
- *	"WokeEmpty": rcuo kthread woke to find empty list.
268
- *	"WokeNonEmpty": rcuo kthread woke to find non-empty list.
269
- *	"WaitQueue": Enqueue partially done, timed wait for it to complete.
270
- *	"WokeQueue": Partial enqueue now complete.
261
+ * "AlreadyAwake": The to-be-awakened rcuo kthread is already awake.
262
+ * "Bypass": rcuo GP kthread sees non-empty ->nocb_bypass.
263
+ * "CBSleep": rcuo CB kthread sleeping waiting for CBs.
264
+ * "Check": rcuo GP kthread checking specified CPU for work.
265
+ * "DeferredWake": Timer expired or polled check, time to wake.
266
+ * "DoWake": The to-be-awakened rcuo kthread needs to be awakened.
267
+ * "EndSleep": Done waiting for GP for !rcu_nocb_poll.
268
+ * "FirstBQ": New CB to empty ->nocb_bypass (->cblist maybe non-empty).
269
+ * "FirstBQnoWake": FirstBQ plus rcuo kthread need not be awakened.
270
+ * "FirstBQwake": FirstBQ plus rcuo kthread must be awakened.
271
+ * "FirstQ": New CB to empty ->cblist (->nocb_bypass maybe non-empty).
272
+ * "NeedWaitGP": rcuo GP kthread must wait on a grace period.
273
+ * "Poll": Start of new polling cycle for rcu_nocb_poll.
274
+ * "Sleep": Sleep waiting for GP for !rcu_nocb_poll.
275
+ * "Timer": Deferred-wake timer expired.
276
+ * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list.
277
+ * "WakeEmpty": Wake rcuo kthread, first CB to empty list.
278
+ * "WakeNot": Don't wake rcuo kthread.
279
+ * "WakeNotPoll": Don't wake rcuo kthread because it is polling.
280
+ * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge.
281
+ * "WokeEmpty": rcuo CB kthread woke to find empty list.
271282  */
272
-TRACE_EVENT(rcu_nocb_wake,
283
+TRACE_EVENT_RCU(rcu_nocb_wake,
273284 
274285 	TP_PROTO(const char *rcuname, int cpu, const char *reason),
275286 
....@@ -297,7 +308,7 @@
297308  * include SRCU), the grace-period number that the task is blocking
298309  * (the current or the next), and the task's PID.
299310  */
300
-TRACE_EVENT(rcu_preempt_task,
311
+TRACE_EVENT_RCU(rcu_preempt_task,
301312 
302313 	TP_PROTO(const char *rcuname, int pid, unsigned long gp_seq),
303314 
....@@ -305,17 +316,17 @@
305316 
306317 	TP_STRUCT__entry(
307318 		__field(const char *, rcuname)
308
-		__field(unsigned long, gp_seq)
319
+		__field(long, gp_seq)
309320 		__field(int, pid)
310321 	),
311322 
312323 	TP_fast_assign(
313324 		__entry->rcuname = rcuname;
314
-		__entry->gp_seq = gp_seq;
325
+		__entry->gp_seq = (long)gp_seq;
315326 		__entry->pid = pid;
316327 	),
317328 
318
-	TP_printk("%s %lu %d",
329
+	TP_printk("%s %ld %d",
319330 		  __entry->rcuname, __entry->gp_seq, __entry->pid)
320331 );
321332 
....@@ -324,7 +335,7 @@
324335  * read-side critical section exiting that critical section.  Track the
325336  * type of RCU (which one day might include SRCU) and the task's PID.
326337  */
327
-TRACE_EVENT(rcu_unlock_preempted_task,
338
+TRACE_EVENT_RCU(rcu_unlock_preempted_task,
328339 
329340 	TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid),
330341 
....@@ -332,17 +343,17 @@
332343 
333344 	TP_STRUCT__entry(
334345 		__field(const char *, rcuname)
335
-		__field(unsigned long, gp_seq)
346
+		__field(long, gp_seq)
336347 		__field(int, pid)
337348 	),
338349 
339350 	TP_fast_assign(
340351 		__entry->rcuname = rcuname;
341
-		__entry->gp_seq = gp_seq;
352
+		__entry->gp_seq = (long)gp_seq;
342353 		__entry->pid = pid;
343354 	),
344355 
345
-	TP_printk("%s %lu %d", __entry->rcuname, __entry->gp_seq, __entry->pid)
356
+	TP_printk("%s %ld %d", __entry->rcuname, __entry->gp_seq, __entry->pid)
346357 );
347358 
348359 /*
....@@ -353,7 +364,7 @@
353364  * whether there are any blocked tasks blocking the current grace period.
354365  * All but the type of RCU are extracted from the rcu_node structure.
355366  */
356
-TRACE_EVENT(rcu_quiescent_state_report,
367
+TRACE_EVENT_RCU(rcu_quiescent_state_report,
357368 
358369 	TP_PROTO(const char *rcuname, unsigned long gp_seq,
359370 		 unsigned long mask, unsigned long qsmask,
....@@ -363,7 +374,7 @@
363374 
364375 	TP_STRUCT__entry(
365376 		__field(const char *, rcuname)
366
-		__field(unsigned long, gp_seq)
377
+		__field(long, gp_seq)
367378 		__field(unsigned long, mask)
368379 		__field(unsigned long, qsmask)
369380 		__field(u8, level)
....@@ -374,7 +385,7 @@
374385 
375386 	TP_fast_assign(
376387 		__entry->rcuname = rcuname;
377
-		__entry->gp_seq = gp_seq;
388
+		__entry->gp_seq = (long)gp_seq;
378389 		__entry->mask = mask;
379390 		__entry->qsmask = qsmask;
380391 		__entry->level = level;
....@@ -383,7 +394,7 @@
383394 		__entry->gp_tasks = gp_tasks;
384395 	),
385396 
386
-	TP_printk("%s %lu %lx>%lx %u %d %d %u",
397
+	TP_printk("%s %ld %lx>%lx %u %d %d %u",
387398 		  __entry->rcuname, __entry->gp_seq,
388399 		  __entry->mask, __entry->qsmask, __entry->level,
389400 		  __entry->grplo, __entry->grphi, __entry->gp_tasks)
....@@ -393,11 +404,10 @@
393404  * Tracepoint for quiescent states detected by force_quiescent_state().
394405  * These trace events include the type of RCU, the grace-period number
395406  * that was blocked by the CPU, the CPU itself, and the type of quiescent
396
- * state, which can be "dti" for dyntick-idle mode, "kick" when kicking
397
- * a CPU that has been in dyntick-idle mode for too long, or "rqc" if the
398
- * CPU got a quiescent state via its rcu_qs_ctr.
407
+ * state, which can be "dti" for dyntick-idle mode or "kick" when kicking
408
+ * a CPU that has been in dyntick-idle mode for too long.
399409  */
400
-TRACE_EVENT(rcu_fqs,
410
+TRACE_EVENT_RCU(rcu_fqs,
401411 
402412 	TP_PROTO(const char *rcuname, unsigned long gp_seq, int cpu, const char *qsevent),
403413 
....@@ -405,31 +415,60 @@
405415 
406416 	TP_STRUCT__entry(
407417 		__field(const char *, rcuname)
408
-		__field(unsigned long, gp_seq)
418
+		__field(long, gp_seq)
409419 		__field(int, cpu)
410420 		__field(const char *, qsevent)
411421 	),
412422 
413423 	TP_fast_assign(
414424 		__entry->rcuname = rcuname;
415
-		__entry->gp_seq = gp_seq;
425
+		__entry->gp_seq = (long)gp_seq;
416426 		__entry->cpu = cpu;
417427 		__entry->qsevent = qsevent;
418428 	),
419429 
420
-	TP_printk("%s %lu %d %s",
430
+	TP_printk("%s %ld %d %s",
421431 		  __entry->rcuname, __entry->gp_seq,
422432 		  __entry->cpu, __entry->qsevent)
423433 );
424434 
425
-#endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */
435
+/*
436
+ * Tracepoint for RCU stall events. Takes a string identifying the RCU flavor
437
+ * and a string identifying which function detected the RCU stall as follows:
438
+ *
439
+ *	"StallDetected": Scheduler-tick detects other CPU's stalls.
440
+ *	"SelfDetected": Scheduler-tick detects a current CPU's stall.
441
+ *	"ExpeditedStall": Expedited grace period detects stalls.
442
+ */
443
+TRACE_EVENT(rcu_stall_warning,
444
+
445
+	TP_PROTO(const char *rcuname, const char *msg),
446
+
447
+	TP_ARGS(rcuname, msg),
448
+
449
+	TP_STRUCT__entry(
450
+		__field(const char *, rcuname)
451
+		__field(const char *, msg)
452
+	),
453
+
454
+	TP_fast_assign(
455
+		__entry->rcuname = rcuname;
456
+		__entry->msg = msg;
457
+	),
458
+
459
+	TP_printk("%s %s",
460
+		  __entry->rcuname, __entry->msg)
461
+);
462
+
463
+#endif /* #if defined(CONFIG_TREE_RCU) */
426464 
427465 /*
428
- * Tracepoint for dyntick-idle entry/exit events.  These take a string
429
- * as argument: "Start" for entering dyntick-idle mode, "Startirq" for
430
- * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it
431
- * to irq/NMI, "--=" for events moving towards idle, and "++=" for events
432
- * moving away from idle.
466
+ * Tracepoint for dyntick-idle entry/exit events.  These take 2 strings
467
+ * as argument:
468
+ * polarity: "Start", "End", "StillNonIdle" for entering, exiting or still not
469
+ *            being in dyntick-idle mode.
470
+ * context: "USER" or "IDLE" or "IRQ".
471
+ * NMIs nested in IRQs are inferred with dynticks_nesting > 1 in IRQ context.
433472  *
434473  * These events also take a pair of numbers, which indicate the nesting
435474  * depth before and after the event of interest, and a third number that is
....@@ -437,9 +476,9 @@
437476  * events use two separate counters, and that the "++=" and "--=" events
438477  * for irq/NMI will change the counter by two, otherwise by one.
439478  */
440
-TRACE_EVENT(rcu_dyntick,
479
+TRACE_EVENT_RCU(rcu_dyntick,
441480 
442
-	TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks),
481
+	TP_PROTO(const char *polarity, long oldnesting, long newnesting, int dynticks),
443482 
444483 	TP_ARGS(polarity, oldnesting, newnesting, dynticks),
445484 
....@@ -454,7 +493,7 @@
454493 		__entry->polarity = polarity;
455494 		__entry->oldnesting = oldnesting;
456495 		__entry->newnesting = newnesting;
457
-		__entry->dynticks = atomic_read(&dynticks);
496
+		__entry->dynticks = dynticks;
458497 	),
459498 
460499 	TP_printk("%s %lx %lx %#3x", __entry->polarity,
....@@ -469,18 +508,16 @@
469508  * number of lazy callbacks queued, and the fourth element is the
470509  * total number of callbacks queued.
471510  */
472
-TRACE_EVENT(rcu_callback,
511
+TRACE_EVENT_RCU(rcu_callback,
473512 
474
-	TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
475
-		 long qlen),
513
+	TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen),
476514 
477
-	TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
515
+	TP_ARGS(rcuname, rhp, qlen),
478516 
479517 	TP_STRUCT__entry(
480518 		__field(const char *, rcuname)
481519 		__field(void *, rhp)
482520 		__field(void *, func)
483
-		__field(long, qlen_lazy)
484521 		__field(long, qlen)
485522 	),
486523 
....@@ -488,35 +525,33 @@
488525 		__entry->rcuname = rcuname;
489526 		__entry->rhp = rhp;
490527 		__entry->func = rhp->func;
491
-		__entry->qlen_lazy = qlen_lazy;
492528 		__entry->qlen = qlen;
493529 	),
494530 
495
-	TP_printk("%s rhp=%p func=%pf %ld/%ld",
531
+	TP_printk("%s rhp=%p func=%ps %ld",
496532 		  __entry->rcuname, __entry->rhp, __entry->func,
497
-		  __entry->qlen_lazy, __entry->qlen)
533
+		  __entry->qlen)
498534 );
499535 
500536 /*
501537  * Tracepoint for the registration of a single RCU callback of the special
502
- * kfree() form.  The first argument is the RCU type, the second argument
538
+ * kvfree() form.  The first argument is the RCU type, the second argument
503539  * is a pointer to the RCU callback, the third argument is the offset
504540  * of the callback within the enclosing RCU-protected data structure,
505541  * the fourth argument is the number of lazy callbacks queued, and the
506542  * fifth argument is the total number of callbacks queued.
507543  */
508
-TRACE_EVENT(rcu_kfree_callback,
544
+TRACE_EVENT_RCU(rcu_kvfree_callback,
509545 
510546 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
511
-		 long qlen_lazy, long qlen),
547
+		 long qlen),
512548 
513
-	TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
549
+	TP_ARGS(rcuname, rhp, offset, qlen),
514550 
515551 	TP_STRUCT__entry(
516552 		__field(const char *, rcuname)
517553 		__field(void *, rhp)
518554 		__field(unsigned long, offset)
519
-		__field(long, qlen_lazy)
520555 		__field(long, qlen)
521556 	),
522557 
....@@ -524,13 +559,12 @@
524559 		__entry->rcuname = rcuname;
525560 		__entry->rhp = rhp;
526561 		__entry->offset = offset;
527
-		__entry->qlen_lazy = qlen_lazy;
528562 		__entry->qlen = qlen;
529563 	),
530564 
531
-	TP_printk("%s rhp=%p func=%ld %ld/%ld",
565
+	TP_printk("%s rhp=%p func=%ld %ld",
532566 		  __entry->rcuname, __entry->rhp, __entry->offset,
533
-		  __entry->qlen_lazy, __entry->qlen)
567
+		  __entry->qlen)
534568 );
535569 
536570 /*
....@@ -540,29 +574,26 @@
540574  * the total number of callbacks queued, and the fourth argument is
541575  * the current RCU-callback batch limit.
542576  */
543
-TRACE_EVENT(rcu_batch_start,
577
+TRACE_EVENT_RCU(rcu_batch_start,
544578 
545
-	TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
579
+	TP_PROTO(const char *rcuname, long qlen, long blimit),
546580 
547
-	TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
581
+	TP_ARGS(rcuname, qlen, blimit),
548582 
549583 	TP_STRUCT__entry(
550584 		__field(const char *, rcuname)
551
-		__field(long, qlen_lazy)
552585 		__field(long, qlen)
553586 		__field(long, blimit)
554587 	),
555588 
556589 	TP_fast_assign(
557590 		__entry->rcuname = rcuname;
558
-		__entry->qlen_lazy = qlen_lazy;
559591 		__entry->qlen = qlen;
560592 		__entry->blimit = blimit;
561593 	),
562594 
563
-	TP_printk("%s CBs=%ld/%ld bl=%ld",
564
-		  __entry->rcuname, __entry->qlen_lazy, __entry->qlen,
565
-		  __entry->blimit)
595
+	TP_printk("%s CBs=%ld bl=%ld",
596
+		  __entry->rcuname, __entry->qlen, __entry->blimit)
566597 );
567598 
568599 /*
....@@ -570,7 +601,7 @@
570601  * The first argument is the type of RCU, and the second argument is
571602  * a pointer to the RCU callback itself.
572603  */
573
-TRACE_EVENT(rcu_invoke_callback,
604
+TRACE_EVENT_RCU(rcu_invoke_callback,
574605 
575606 	TP_PROTO(const char *rcuname, struct rcu_head *rhp),
576607 
....@@ -588,18 +619,18 @@
588619 		__entry->func = rhp->func;
589620 	),
590621 
591
-	TP_printk("%s rhp=%p func=%pf",
622
+	TP_printk("%s rhp=%p func=%ps",
592623 		  __entry->rcuname, __entry->rhp, __entry->func)
593624 );
594625 
595626 /*
596627  * Tracepoint for the invocation of a single RCU callback of the special
597
- * kfree() form.  The first argument is the RCU flavor, the second
628
+ * kvfree() form.  The first argument is the RCU flavor, the second
598629  * argument is a pointer to the RCU callback, and the third argument
599630  * is the offset of the callback within the enclosing RCU-protected
600631  * data structure.
601632  */
602
-TRACE_EVENT(rcu_invoke_kfree_callback,
633
+TRACE_EVENT_RCU(rcu_invoke_kvfree_callback,
603634 
604635 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
605636 
....@@ -622,6 +653,34 @@
622653 );
623654 
624655 /*
656
+ * Tracepoint for the invocation of a single RCU callback of the special
657
+ * kfree_bulk() form. The first argument is the RCU flavor, the second
658
+ * argument is a number of elements in array to free, the third is an
659
+ * address of the array holding nr_records entries.
660
+ */
661
+TRACE_EVENT_RCU(rcu_invoke_kfree_bulk_callback,
662
+
663
+	TP_PROTO(const char *rcuname, unsigned long nr_records, void **p),
664
+
665
+	TP_ARGS(rcuname, nr_records, p),
666
+
667
+	TP_STRUCT__entry(
668
+		__field(const char *, rcuname)
669
+		__field(unsigned long, nr_records)
670
+		__field(void **, p)
671
+	),
672
+
673
+	TP_fast_assign(
674
+		__entry->rcuname = rcuname;
675
+		__entry->nr_records = nr_records;
676
+		__entry->p = p;
677
+	),
678
+
679
+	TP_printk("%s bulk=0x%p nr_records=%lu",
680
+		__entry->rcuname, __entry->p, __entry->nr_records)
681
+);
682
+
683
+/*
625684  * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
626685  * invoked.  The first argument is the name of the RCU flavor,
627686  * the second argument is number of callbacks actually invoked,
....@@ -632,7 +691,7 @@
632691  * and the sixth argument (risk) is the return value from
633692  * rcu_is_callbacks_kthread().
634693  */
635
-TRACE_EVENT(rcu_batch_end,
694
+TRACE_EVENT_RCU(rcu_batch_end,
636695 
637696 	TP_PROTO(const char *rcuname, int callbacks_invoked,
638697 		 char cb, char nr, char iit, char risk),
....@@ -674,7 +733,7 @@
674733  * callback address can be NULL.
675734  */
676735 #define RCUTORTURENAME_LEN 8
677
-TRACE_EVENT(rcu_torture_read,
736
+TRACE_EVENT_RCU(rcu_torture_read,
678737 
679738 	TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
680739 		 unsigned long secs, unsigned long c_old, unsigned long c),
....@@ -682,7 +741,7 @@
682741 	TP_ARGS(rcutorturename, rhp, secs, c_old, c),
683742 
684743 	TP_STRUCT__entry(
685
-		__field(char, rcutorturename[RCUTORTURENAME_LEN])
744
+		__array(char, rcutorturename, RCUTORTURENAME_LEN)
686745 		__field(struct rcu_head *, rhp)
687746 		__field(unsigned long, secs)
688747 		__field(unsigned long, c_old)
....@@ -705,24 +764,23 @@
705764 );
706765 
707766 /*
708
- * Tracepoint for _rcu_barrier() execution.  The string "s" describes
709
- * the _rcu_barrier phase:
710
- *	"Begin": _rcu_barrier() started.
711
- *	"EarlyExit": _rcu_barrier() piggybacked, thus early exit.
712
- *	"Inc1": _rcu_barrier() piggyback check counter incremented.
713
- *	"OfflineNoCB": _rcu_barrier() found callback on never-online CPU
714
- *	"OnlineNoCB": _rcu_barrier() found online no-CBs CPU.
715
- *	"OnlineQ": _rcu_barrier() found online CPU with callbacks.
716
- *	"OnlineNQ": _rcu_barrier() found online CPU, no callbacks.
767
+ * Tracepoint for rcu_barrier() execution.  The string "s" describes
768
+ * the rcu_barrier phase:
769
+ *	"Begin": rcu_barrier() started.
770
+ *	"EarlyExit": rcu_barrier() piggybacked, thus early exit.
771
+ *	"Inc1": rcu_barrier() piggyback check counter incremented.
772
+ *	"OfflineNoCBQ": rcu_barrier() found offline no-CBs CPU with callbacks.
773
+ *	"OnlineQ": rcu_barrier() found online CPU with callbacks.
774
+ *	"OnlineNQ": rcu_barrier() found online CPU, no callbacks.
717775  *	"IRQ": An rcu_barrier_callback() callback posted on remote CPU.
718776  *	"IRQNQ": An rcu_barrier_callback() callback found no callbacks.
719777  *	"CB": An rcu_barrier_callback() invoked a callback, not the last.
720778  *	"LastCB": An rcu_barrier_callback() invoked the last callback.
721
- *	"Inc2": _rcu_barrier() piggyback check counter incremented.
779
+ *	"Inc2": rcu_barrier() piggyback check counter incremented.
722780  * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
723781  * is the count of remaining callbacks, and "done" is the piggybacking count.
724782  */
725
-TRACE_EVENT(rcu_barrier,
783
+TRACE_EVENT_RCU(rcu_barrier,
726784 
727785 	TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
728786 
....@@ -748,41 +806,6 @@
748806 		  __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt,
749807 		  __entry->done)
750808 );
751
-
752
-#else /* #ifdef CONFIG_RCU_TRACE */
753
-
754
-#define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0)
755
-#define trace_rcu_future_grace_period(rcuname, gp_seq, gp_seq_req, \
756
-				      level, grplo, grphi, event) \
757
-				      do { } while (0)
758
-#define trace_rcu_grace_period_init(rcuname, gp_seq, level, grplo, grphi, \
759
-				    qsmask) do { } while (0)
760
-#define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \
761
-	do { } while (0)
762
-#define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \
763
-	do { } while (0)
764
-#define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
765
-#define trace_rcu_preempt_task(rcuname, pid, gp_seq) do { } while (0)
766
-#define trace_rcu_unlock_preempted_task(rcuname, gp_seq, pid) do { } while (0)
767
-#define trace_rcu_quiescent_state_report(rcuname, gp_seq, mask, qsmask, level, \
768
-					 grplo, grphi, gp_tasks) do { } \
769
-	while (0)
770
-#define trace_rcu_fqs(rcuname, gp_seq, cpu, qsevent) do { } while (0)
771
-#define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0)
772
-#define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
773
-#define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
774
-	do { } while (0)
775
-#define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
776
-	do { } while (0)
777
-#define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
778
-#define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
779
-#define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
780
-	do { } while (0)
781
-#define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
782
-	do { } while (0)
783
-#define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
784
-
785
-#endif /* #else #ifdef CONFIG_RCU_TRACE */
786809 
787810 #endif /* _TRACE_RCU_H */
788811