Commit | Line | Data |
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29c00b4a PM |
1 | #undef TRACE_SYSTEM |
2 | #define TRACE_SYSTEM rcu | |
3 | ||
4 | #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ) | |
5 | #define _TRACE_RCU_H | |
6 | ||
7 | #include <linux/tracepoint.h> | |
8 | ||
9 | /* | |
300df91c PM |
10 | * Tracepoint for start/end markers used for utilization calculations. |
11 | * By convention, the string is of the following forms: | |
12 | * | |
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. | |
385680a9 PM |
16 | * |
17 | * An "@" character within "<activity>" is a comment character: Data | |
18 | * reduction scripts will ignore the "@" and the remainder of the line. | |
300df91c PM |
19 | */ |
20 | TRACE_EVENT(rcu_utilization, | |
21 | ||
e66c33d5 | 22 | TP_PROTO(const char *s), |
300df91c PM |
23 | |
24 | TP_ARGS(s), | |
25 | ||
26 | TP_STRUCT__entry( | |
e66c33d5 | 27 | __field(const char *, s) |
300df91c PM |
28 | ), |
29 | ||
30 | TP_fast_assign( | |
31 | __entry->s = s; | |
32 | ), | |
33 | ||
34 | TP_printk("%s", __entry->s) | |
35 | ); | |
36 | ||
d4c08f2a PM |
37 | #ifdef CONFIG_RCU_TRACE |
38 | ||
39 | #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) | |
40 | ||
41 | /* | |
63c4db78 PM |
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: | |
45 | * | |
46 | * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. | |
47 | * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. | |
bb311ecc | 48 | * "newreq": Request a new grace period. |
63c4db78 PM |
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. | |
d4c08f2a PM |
62 | */ |
63 | TRACE_EVENT(rcu_grace_period, | |
64 | ||
e66c33d5 | 65 | TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent), |
d4c08f2a PM |
66 | |
67 | TP_ARGS(rcuname, gpnum, gpevent), | |
68 | ||
69 | TP_STRUCT__entry( | |
e66c33d5 | 70 | __field(const char *, rcuname) |
d4c08f2a | 71 | __field(unsigned long, gpnum) |
e66c33d5 | 72 | __field(const char *, gpevent) |
d4c08f2a PM |
73 | ), |
74 | ||
75 | TP_fast_assign( | |
76 | __entry->rcuname = rcuname; | |
77 | __entry->gpnum = gpnum; | |
78 | __entry->gpevent = gpevent; | |
79 | ), | |
80 | ||
81 | TP_printk("%s %lu %s", | |
82 | __entry->rcuname, __entry->gpnum, __entry->gpevent) | |
83 | ); | |
84 | ||
09c7b890 | 85 | /* |
bd9f0686 PM |
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: | |
09c7b890 PM |
90 | * |
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. | |
100 | */ | |
bd9f0686 | 101 | TRACE_EVENT(rcu_future_grace_period, |
09c7b890 | 102 | |
e66c33d5 | 103 | TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed, |
09c7b890 | 104 | unsigned long c, u8 level, int grplo, int grphi, |
e66c33d5 | 105 | const char *gpevent), |
09c7b890 PM |
106 | |
107 | TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent), | |
108 | ||
109 | TP_STRUCT__entry( | |
e66c33d5 | 110 | __field(const char *, rcuname) |
09c7b890 PM |
111 | __field(unsigned long, gpnum) |
112 | __field(unsigned long, completed) | |
113 | __field(unsigned long, c) | |
114 | __field(u8, level) | |
115 | __field(int, grplo) | |
116 | __field(int, grphi) | |
e66c33d5 | 117 | __field(const char *, gpevent) |
09c7b890 PM |
118 | ), |
119 | ||
120 | TP_fast_assign( | |
121 | __entry->rcuname = rcuname; | |
122 | __entry->gpnum = gpnum; | |
123 | __entry->completed = completed; | |
124 | __entry->c = c; | |
125 | __entry->level = level; | |
126 | __entry->grplo = grplo; | |
127 | __entry->grphi = grphi; | |
128 | __entry->gpevent = gpevent; | |
129 | ), | |
130 | ||
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, | |
134 | __entry->gpevent) | |
135 | ); | |
136 | ||
d4c08f2a PM |
137 | /* |
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. | |
143 | */ | |
144 | TRACE_EVENT(rcu_grace_period_init, | |
145 | ||
e66c33d5 | 146 | TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level, |
d4c08f2a PM |
147 | int grplo, int grphi, unsigned long qsmask), |
148 | ||
149 | TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), | |
150 | ||
151 | TP_STRUCT__entry( | |
e66c33d5 | 152 | __field(const char *, rcuname) |
d4c08f2a PM |
153 | __field(unsigned long, gpnum) |
154 | __field(u8, level) | |
155 | __field(int, grplo) | |
156 | __field(int, grphi) | |
157 | __field(unsigned long, qsmask) | |
158 | ), | |
159 | ||
160 | TP_fast_assign( | |
161 | __entry->rcuname = rcuname; | |
162 | __entry->gpnum = gpnum; | |
163 | __entry->level = level; | |
164 | __entry->grplo = grplo; | |
165 | __entry->grphi = grphi; | |
166 | __entry->qsmask = qsmask; | |
167 | ), | |
168 | ||
169 | TP_printk("%s %lu %u %d %d %lx", | |
170 | __entry->rcuname, __entry->gpnum, __entry->level, | |
171 | __entry->grplo, __entry->grphi, __entry->qsmask) | |
172 | ); | |
173 | ||
9261dd0d PM |
174 | /* |
175 | * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended | |
176 | * to assist debugging of these handoffs. | |
177 | * | |
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: | |
181 | * | |
182 | * "WakeEmpty": Wake rcuo kthread, first CB to empty list. | |
183 | * "WakeOvf": Wake rcuo kthread, CB list is huge. | |
184 | * "WakeNot": Don't wake rcuo kthread. | |
185 | * "WakeNotPoll": Don't wake rcuo kthread because it is polling. | |
69a79bb1 PM |
186 | * "Poll": Start of new polling cycle for rcu_nocb_poll. |
187 | * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. | |
9261dd0d PM |
188 | * "WokeEmpty": rcuo kthread woke to find empty list. |
189 | * "WokeNonEmpty": rcuo kthread woke to find non-empty list. | |
69a79bb1 PM |
190 | * "WaitQueue": Enqueue partially done, timed wait for it to complete. |
191 | * "WokeQueue": Partial enqueue now complete. | |
9261dd0d PM |
192 | */ |
193 | TRACE_EVENT(rcu_nocb_wake, | |
194 | ||
195 | TP_PROTO(const char *rcuname, int cpu, const char *reason), | |
196 | ||
197 | TP_ARGS(rcuname, cpu, reason), | |
198 | ||
199 | TP_STRUCT__entry( | |
200 | __field(const char *, rcuname) | |
201 | __field(int, cpu) | |
202 | __field(const char *, reason) | |
203 | ), | |
204 | ||
205 | TP_fast_assign( | |
206 | __entry->rcuname = rcuname; | |
207 | __entry->cpu = cpu; | |
208 | __entry->reason = reason; | |
209 | ), | |
210 | ||
211 | TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) | |
212 | ); | |
213 | ||
d4c08f2a PM |
214 | /* |
215 | * Tracepoint for tasks blocking within preemptible-RCU read-side | |
216 | * critical sections. Track the type of RCU (which one day might | |
217 | * include SRCU), the grace-period number that the task is blocking | |
218 | * (the current or the next), and the task's PID. | |
219 | */ | |
220 | TRACE_EVENT(rcu_preempt_task, | |
221 | ||
e66c33d5 | 222 | TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), |
d4c08f2a PM |
223 | |
224 | TP_ARGS(rcuname, pid, gpnum), | |
225 | ||
226 | TP_STRUCT__entry( | |
e66c33d5 | 227 | __field(const char *, rcuname) |
d4c08f2a PM |
228 | __field(unsigned long, gpnum) |
229 | __field(int, pid) | |
230 | ), | |
231 | ||
232 | TP_fast_assign( | |
233 | __entry->rcuname = rcuname; | |
234 | __entry->gpnum = gpnum; | |
235 | __entry->pid = pid; | |
236 | ), | |
237 | ||
238 | TP_printk("%s %lu %d", | |
239 | __entry->rcuname, __entry->gpnum, __entry->pid) | |
240 | ); | |
241 | ||
242 | /* | |
243 | * Tracepoint for tasks that blocked within a given preemptible-RCU | |
244 | * read-side critical section exiting that critical section. Track the | |
245 | * type of RCU (which one day might include SRCU) and the task's PID. | |
246 | */ | |
247 | TRACE_EVENT(rcu_unlock_preempted_task, | |
248 | ||
e66c33d5 | 249 | TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), |
d4c08f2a PM |
250 | |
251 | TP_ARGS(rcuname, gpnum, pid), | |
252 | ||
253 | TP_STRUCT__entry( | |
e66c33d5 | 254 | __field(const char *, rcuname) |
d4c08f2a PM |
255 | __field(unsigned long, gpnum) |
256 | __field(int, pid) | |
257 | ), | |
258 | ||
259 | TP_fast_assign( | |
260 | __entry->rcuname = rcuname; | |
261 | __entry->gpnum = gpnum; | |
262 | __entry->pid = pid; | |
263 | ), | |
264 | ||
265 | TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) | |
266 | ); | |
267 | ||
268 | /* | |
269 | * Tracepoint for quiescent-state-reporting events. These are | |
270 | * distinguished by the type of RCU, the grace-period number, the | |
271 | * mask of quiescent lower-level entities, the rcu_node structure level, | |
272 | * the starting and ending CPU covered by the rcu_node structure, and | |
273 | * whether there are any blocked tasks blocking the current grace period. | |
274 | * All but the type of RCU are extracted from the rcu_node structure. | |
275 | */ | |
276 | TRACE_EVENT(rcu_quiescent_state_report, | |
277 | ||
e66c33d5 | 278 | TP_PROTO(const char *rcuname, unsigned long gpnum, |
d4c08f2a PM |
279 | unsigned long mask, unsigned long qsmask, |
280 | u8 level, int grplo, int grphi, int gp_tasks), | |
281 | ||
282 | TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), | |
283 | ||
284 | TP_STRUCT__entry( | |
e66c33d5 | 285 | __field(const char *, rcuname) |
d4c08f2a PM |
286 | __field(unsigned long, gpnum) |
287 | __field(unsigned long, mask) | |
288 | __field(unsigned long, qsmask) | |
289 | __field(u8, level) | |
290 | __field(int, grplo) | |
291 | __field(int, grphi) | |
292 | __field(u8, gp_tasks) | |
293 | ), | |
294 | ||
295 | TP_fast_assign( | |
296 | __entry->rcuname = rcuname; | |
297 | __entry->gpnum = gpnum; | |
298 | __entry->mask = mask; | |
299 | __entry->qsmask = qsmask; | |
300 | __entry->level = level; | |
301 | __entry->grplo = grplo; | |
302 | __entry->grphi = grphi; | |
303 | __entry->gp_tasks = gp_tasks; | |
304 | ), | |
305 | ||
306 | TP_printk("%s %lu %lx>%lx %u %d %d %u", | |
307 | __entry->rcuname, __entry->gpnum, | |
308 | __entry->mask, __entry->qsmask, __entry->level, | |
309 | __entry->grplo, __entry->grphi, __entry->gp_tasks) | |
310 | ); | |
311 | ||
312 | /* | |
313 | * Tracepoint for quiescent states detected by force_quiescent_state(). | |
314 | * These trace events include the type of RCU, the grace-period number | |
315 | * that was blocked by the CPU, the CPU itself, and the type of quiescent | |
316 | * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, | |
317 | * or "kick" when kicking a CPU that has been in dyntick-idle mode for | |
318 | * too long. | |
319 | */ | |
320 | TRACE_EVENT(rcu_fqs, | |
321 | ||
e66c33d5 | 322 | TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), |
d4c08f2a PM |
323 | |
324 | TP_ARGS(rcuname, gpnum, cpu, qsevent), | |
325 | ||
326 | TP_STRUCT__entry( | |
e66c33d5 | 327 | __field(const char *, rcuname) |
d4c08f2a PM |
328 | __field(unsigned long, gpnum) |
329 | __field(int, cpu) | |
e66c33d5 | 330 | __field(const char *, qsevent) |
d4c08f2a PM |
331 | ), |
332 | ||
333 | TP_fast_assign( | |
334 | __entry->rcuname = rcuname; | |
335 | __entry->gpnum = gpnum; | |
336 | __entry->cpu = cpu; | |
337 | __entry->qsevent = qsevent; | |
338 | ), | |
339 | ||
340 | TP_printk("%s %lu %d %s", | |
341 | __entry->rcuname, __entry->gpnum, | |
342 | __entry->cpu, __entry->qsevent) | |
343 | ); | |
344 | ||
345 | #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) */ | |
346 | ||
347 | /* | |
348 | * Tracepoint for dyntick-idle entry/exit events. These take a string | |
045fb931 PM |
349 | * as argument: "Start" for entering dyntick-idle mode, "End" for |
350 | * leaving it, "--=" for events moving towards idle, and "++=" for events | |
351 | * moving away from idle. "Error on entry: not idle task" and "Error on | |
352 | * exit: not idle task" indicate that a non-idle task is erroneously | |
353 | * toying with the idle loop. | |
354 | * | |
355 | * These events also take a pair of numbers, which indicate the nesting | |
356 | * depth before and after the event of interest. Note that task-related | |
357 | * events use the upper bits of each number, while interrupt-related | |
358 | * events use the lower bits. | |
d4c08f2a PM |
359 | */ |
360 | TRACE_EVENT(rcu_dyntick, | |
361 | ||
e66c33d5 | 362 | TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), |
d4c08f2a | 363 | |
4145fa7f | 364 | TP_ARGS(polarity, oldnesting, newnesting), |
d4c08f2a PM |
365 | |
366 | TP_STRUCT__entry( | |
e66c33d5 | 367 | __field(const char *, polarity) |
4145fa7f PM |
368 | __field(long long, oldnesting) |
369 | __field(long long, newnesting) | |
d4c08f2a PM |
370 | ), |
371 | ||
372 | TP_fast_assign( | |
373 | __entry->polarity = polarity; | |
4145fa7f PM |
374 | __entry->oldnesting = oldnesting; |
375 | __entry->newnesting = newnesting; | |
d4c08f2a PM |
376 | ), |
377 | ||
4145fa7f PM |
378 | TP_printk("%s %llx %llx", __entry->polarity, |
379 | __entry->oldnesting, __entry->newnesting) | |
d4c08f2a PM |
380 | ); |
381 | ||
433cdddc PM |
382 | /* |
383 | * Tracepoint for RCU preparation for idle, the goal being to get RCU | |
384 | * processing done so that the current CPU can shut off its scheduling | |
385 | * clock and enter dyntick-idle mode. One way to accomplish this is | |
386 | * to drain all RCU callbacks from this CPU, and the other is to have | |
387 | * done everything RCU requires for the current grace period. In this | |
388 | * latter case, the CPU will be awakened at the end of the current grace | |
389 | * period in order to process the remainder of its callbacks. | |
390 | * | |
391 | * These tracepoints take a string as argument: | |
392 | * | |
393 | * "No callbacks": Nothing to do, no callbacks on this CPU. | |
394 | * "In holdoff": Nothing to do, holding off after unsuccessful attempt. | |
433cdddc | 395 | * "Begin holdoff": Attempt failed, don't retry until next jiffy. |
7cb92499 | 396 | * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. |
fd4b3526 | 397 | * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. |
433cdddc PM |
398 | * "More callbacks": Still more callbacks, try again to clear them out. |
399 | * "Callbacks drained": All callbacks processed, off to dyntick idle! | |
7cb92499 | 400 | * "Timer": Timer fired to cause CPU to continue processing callbacks. |
21e52e15 | 401 | * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. |
2fdbb31b | 402 | * "Cleanup after idle": Idle exited, timer canceled. |
433cdddc PM |
403 | */ |
404 | TRACE_EVENT(rcu_prep_idle, | |
405 | ||
e66c33d5 | 406 | TP_PROTO(const char *reason), |
433cdddc PM |
407 | |
408 | TP_ARGS(reason), | |
409 | ||
410 | TP_STRUCT__entry( | |
e66c33d5 | 411 | __field(const char *, reason) |
433cdddc PM |
412 | ), |
413 | ||
414 | TP_fast_assign( | |
415 | __entry->reason = reason; | |
416 | ), | |
417 | ||
418 | TP_printk("%s", __entry->reason) | |
419 | ); | |
420 | ||
d4c08f2a PM |
421 | /* |
422 | * Tracepoint for the registration of a single RCU callback function. | |
423 | * The first argument is the type of RCU, the second argument is | |
486e2593 PM |
424 | * a pointer to the RCU callback itself, the third element is the |
425 | * number of lazy callbacks queued, and the fourth element is the | |
426 | * total number of callbacks queued. | |
d4c08f2a PM |
427 | */ |
428 | TRACE_EVENT(rcu_callback, | |
429 | ||
e66c33d5 | 430 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, |
486e2593 | 431 | long qlen), |
d4c08f2a | 432 | |
486e2593 | 433 | TP_ARGS(rcuname, rhp, qlen_lazy, qlen), |
d4c08f2a PM |
434 | |
435 | TP_STRUCT__entry( | |
e66c33d5 | 436 | __field(const char *, rcuname) |
d4c08f2a PM |
437 | __field(void *, rhp) |
438 | __field(void *, func) | |
486e2593 | 439 | __field(long, qlen_lazy) |
d4c08f2a PM |
440 | __field(long, qlen) |
441 | ), | |
442 | ||
443 | TP_fast_assign( | |
444 | __entry->rcuname = rcuname; | |
445 | __entry->rhp = rhp; | |
446 | __entry->func = rhp->func; | |
486e2593 | 447 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
448 | __entry->qlen = qlen; |
449 | ), | |
450 | ||
486e2593 PM |
451 | TP_printk("%s rhp=%p func=%pf %ld/%ld", |
452 | __entry->rcuname, __entry->rhp, __entry->func, | |
453 | __entry->qlen_lazy, __entry->qlen) | |
d4c08f2a PM |
454 | ); |
455 | ||
456 | /* | |
457 | * Tracepoint for the registration of a single RCU callback of the special | |
458 | * kfree() form. The first argument is the RCU type, the second argument | |
459 | * is a pointer to the RCU callback, the third argument is the offset | |
460 | * of the callback within the enclosing RCU-protected data structure, | |
486e2593 PM |
461 | * the fourth argument is the number of lazy callbacks queued, and the |
462 | * fifth argument is the total number of callbacks queued. | |
d4c08f2a PM |
463 | */ |
464 | TRACE_EVENT(rcu_kfree_callback, | |
465 | ||
e66c33d5 | 466 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, |
486e2593 | 467 | long qlen_lazy, long qlen), |
d4c08f2a | 468 | |
486e2593 | 469 | TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), |
d4c08f2a PM |
470 | |
471 | TP_STRUCT__entry( | |
e66c33d5 | 472 | __field(const char *, rcuname) |
d4c08f2a PM |
473 | __field(void *, rhp) |
474 | __field(unsigned long, offset) | |
486e2593 | 475 | __field(long, qlen_lazy) |
d4c08f2a PM |
476 | __field(long, qlen) |
477 | ), | |
478 | ||
479 | TP_fast_assign( | |
480 | __entry->rcuname = rcuname; | |
481 | __entry->rhp = rhp; | |
482 | __entry->offset = offset; | |
486e2593 | 483 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
484 | __entry->qlen = qlen; |
485 | ), | |
486 | ||
486e2593 | 487 | TP_printk("%s rhp=%p func=%ld %ld/%ld", |
d4c08f2a | 488 | __entry->rcuname, __entry->rhp, __entry->offset, |
486e2593 | 489 | __entry->qlen_lazy, __entry->qlen) |
d4c08f2a PM |
490 | ); |
491 | ||
300df91c PM |
492 | /* |
493 | * Tracepoint for marking the beginning rcu_do_batch, performed to start | |
72fe701b | 494 | * RCU callback invocation. The first argument is the RCU flavor, |
486e2593 PM |
495 | * the second is the number of lazy callbacks queued, the third is |
496 | * the total number of callbacks queued, and the fourth argument is | |
497 | * the current RCU-callback batch limit. | |
29c00b4a PM |
498 | */ |
499 | TRACE_EVENT(rcu_batch_start, | |
500 | ||
e66c33d5 | 501 | TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), |
29c00b4a | 502 | |
486e2593 | 503 | TP_ARGS(rcuname, qlen_lazy, qlen, blimit), |
29c00b4a PM |
504 | |
505 | TP_STRUCT__entry( | |
e66c33d5 | 506 | __field(const char *, rcuname) |
486e2593 | 507 | __field(long, qlen_lazy) |
300df91c | 508 | __field(long, qlen) |
3aac7a8d | 509 | __field(long, blimit) |
29c00b4a PM |
510 | ), |
511 | ||
512 | TP_fast_assign( | |
72fe701b | 513 | __entry->rcuname = rcuname; |
486e2593 | 514 | __entry->qlen_lazy = qlen_lazy; |
300df91c PM |
515 | __entry->qlen = qlen; |
516 | __entry->blimit = blimit; | |
29c00b4a PM |
517 | ), |
518 | ||
3aac7a8d | 519 | TP_printk("%s CBs=%ld/%ld bl=%ld", |
486e2593 PM |
520 | __entry->rcuname, __entry->qlen_lazy, __entry->qlen, |
521 | __entry->blimit) | |
29c00b4a PM |
522 | ); |
523 | ||
524 | /* | |
300df91c | 525 | * Tracepoint for the invocation of a single RCU callback function. |
d4c08f2a PM |
526 | * The first argument is the type of RCU, and the second argument is |
527 | * a pointer to the RCU callback itself. | |
29c00b4a PM |
528 | */ |
529 | TRACE_EVENT(rcu_invoke_callback, | |
530 | ||
e66c33d5 | 531 | TP_PROTO(const char *rcuname, struct rcu_head *rhp), |
29c00b4a | 532 | |
d4c08f2a | 533 | TP_ARGS(rcuname, rhp), |
29c00b4a PM |
534 | |
535 | TP_STRUCT__entry( | |
e66c33d5 | 536 | __field(const char *, rcuname) |
d4c08f2a PM |
537 | __field(void *, rhp) |
538 | __field(void *, func) | |
29c00b4a PM |
539 | ), |
540 | ||
541 | TP_fast_assign( | |
d4c08f2a | 542 | __entry->rcuname = rcuname; |
300df91c PM |
543 | __entry->rhp = rhp; |
544 | __entry->func = rhp->func; | |
29c00b4a PM |
545 | ), |
546 | ||
d4c08f2a PM |
547 | TP_printk("%s rhp=%p func=%pf", |
548 | __entry->rcuname, __entry->rhp, __entry->func) | |
29c00b4a PM |
549 | ); |
550 | ||
551 | /* | |
300df91c | 552 | * Tracepoint for the invocation of a single RCU callback of the special |
d4c08f2a PM |
553 | * kfree() form. The first argument is the RCU flavor, the second |
554 | * argument is a pointer to the RCU callback, and the third argument | |
555 | * is the offset of the callback within the enclosing RCU-protected | |
556 | * data structure. | |
29c00b4a PM |
557 | */ |
558 | TRACE_EVENT(rcu_invoke_kfree_callback, | |
559 | ||
e66c33d5 | 560 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), |
29c00b4a | 561 | |
d4c08f2a | 562 | TP_ARGS(rcuname, rhp, offset), |
29c00b4a PM |
563 | |
564 | TP_STRUCT__entry( | |
e66c33d5 | 565 | __field(const char *, rcuname) |
d4c08f2a | 566 | __field(void *, rhp) |
300df91c | 567 | __field(unsigned long, offset) |
29c00b4a PM |
568 | ), |
569 | ||
570 | TP_fast_assign( | |
d4c08f2a | 571 | __entry->rcuname = rcuname; |
300df91c | 572 | __entry->rhp = rhp; |
29c00b4a PM |
573 | __entry->offset = offset; |
574 | ), | |
575 | ||
d4c08f2a PM |
576 | TP_printk("%s rhp=%p func=%ld", |
577 | __entry->rcuname, __entry->rhp, __entry->offset) | |
29c00b4a PM |
578 | ); |
579 | ||
580 | /* | |
300df91c | 581 | * Tracepoint for exiting rcu_do_batch after RCU callbacks have been |
4968c300 PM |
582 | * invoked. The first argument is the name of the RCU flavor, |
583 | * the second argument is number of callbacks actually invoked, | |
584 | * the third argument (cb) is whether or not any of the callbacks that | |
585 | * were ready to invoke at the beginning of this batch are still | |
586 | * queued, the fourth argument (nr) is the return value of need_resched(), | |
587 | * the fifth argument (iit) is 1 if the current task is the idle task, | |
588 | * and the sixth argument (risk) is the return value from | |
589 | * rcu_is_callbacks_kthread(). | |
29c00b4a PM |
590 | */ |
591 | TRACE_EVENT(rcu_batch_end, | |
592 | ||
e66c33d5 | 593 | TP_PROTO(const char *rcuname, int callbacks_invoked, |
4968c300 | 594 | bool cb, bool nr, bool iit, bool risk), |
29c00b4a | 595 | |
4968c300 | 596 | TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), |
29c00b4a PM |
597 | |
598 | TP_STRUCT__entry( | |
e66c33d5 | 599 | __field(const char *, rcuname) |
300df91c | 600 | __field(int, callbacks_invoked) |
4968c300 PM |
601 | __field(bool, cb) |
602 | __field(bool, nr) | |
603 | __field(bool, iit) | |
604 | __field(bool, risk) | |
29c00b4a PM |
605 | ), |
606 | ||
607 | TP_fast_assign( | |
72fe701b | 608 | __entry->rcuname = rcuname; |
300df91c | 609 | __entry->callbacks_invoked = callbacks_invoked; |
4968c300 PM |
610 | __entry->cb = cb; |
611 | __entry->nr = nr; | |
612 | __entry->iit = iit; | |
613 | __entry->risk = risk; | |
614 | ), | |
615 | ||
616 | TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", | |
617 | __entry->rcuname, __entry->callbacks_invoked, | |
618 | __entry->cb ? 'C' : '.', | |
619 | __entry->nr ? 'S' : '.', | |
620 | __entry->iit ? 'I' : '.', | |
621 | __entry->risk ? 'R' : '.') | |
29c00b4a PM |
622 | ); |
623 | ||
91afaf30 PM |
624 | /* |
625 | * Tracepoint for rcutorture readers. The first argument is the name | |
626 | * of the RCU flavor from rcutorture's viewpoint and the second argument | |
627 | * is the callback address. | |
628 | */ | |
629 | TRACE_EVENT(rcu_torture_read, | |
630 | ||
e66c33d5 | 631 | TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, |
52494535 | 632 | unsigned long secs, unsigned long c_old, unsigned long c), |
91afaf30 | 633 | |
52494535 | 634 | TP_ARGS(rcutorturename, rhp, secs, c_old, c), |
91afaf30 PM |
635 | |
636 | TP_STRUCT__entry( | |
e66c33d5 | 637 | __field(const char *, rcutorturename) |
91afaf30 | 638 | __field(struct rcu_head *, rhp) |
52494535 PM |
639 | __field(unsigned long, secs) |
640 | __field(unsigned long, c_old) | |
641 | __field(unsigned long, c) | |
91afaf30 PM |
642 | ), |
643 | ||
644 | TP_fast_assign( | |
645 | __entry->rcutorturename = rcutorturename; | |
646 | __entry->rhp = rhp; | |
52494535 PM |
647 | __entry->secs = secs; |
648 | __entry->c_old = c_old; | |
649 | __entry->c = c; | |
91afaf30 PM |
650 | ), |
651 | ||
52494535 PM |
652 | TP_printk("%s torture read %p %luus c: %lu %lu", |
653 | __entry->rcutorturename, __entry->rhp, | |
654 | __entry->secs, __entry->c_old, __entry->c) | |
91afaf30 PM |
655 | ); |
656 | ||
a83eff0a PM |
657 | /* |
658 | * Tracepoint for _rcu_barrier() execution. The string "s" describes | |
659 | * the _rcu_barrier phase: | |
660 | * "Begin": rcu_barrier_callback() started. | |
661 | * "Check": rcu_barrier_callback() checking for piggybacking. | |
662 | * "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit. | |
663 | * "Inc1": rcu_barrier_callback() piggyback check counter incremented. | |
664 | * "Offline": rcu_barrier_callback() found offline CPU | |
3fbfbf7a | 665 | * "OnlineNoCB": rcu_barrier_callback() found online no-CBs CPU. |
a83eff0a PM |
666 | * "OnlineQ": rcu_barrier_callback() found online CPU with callbacks. |
667 | * "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks. | |
668 | * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. | |
669 | * "CB": An rcu_barrier_callback() invoked a callback, not the last. | |
670 | * "LastCB": An rcu_barrier_callback() invoked the last callback. | |
671 | * "Inc2": rcu_barrier_callback() piggyback check counter incremented. | |
672 | * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument | |
673 | * is the count of remaining callbacks, and "done" is the piggybacking count. | |
674 | */ | |
675 | TRACE_EVENT(rcu_barrier, | |
676 | ||
e66c33d5 | 677 | TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), |
a83eff0a PM |
678 | |
679 | TP_ARGS(rcuname, s, cpu, cnt, done), | |
680 | ||
681 | TP_STRUCT__entry( | |
e66c33d5 SRRH |
682 | __field(const char *, rcuname) |
683 | __field(const char *, s) | |
a83eff0a PM |
684 | __field(int, cpu) |
685 | __field(int, cnt) | |
686 | __field(unsigned long, done) | |
687 | ), | |
688 | ||
689 | TP_fast_assign( | |
690 | __entry->rcuname = rcuname; | |
691 | __entry->s = s; | |
692 | __entry->cpu = cpu; | |
693 | __entry->cnt = cnt; | |
694 | __entry->done = done; | |
695 | ), | |
696 | ||
697 | TP_printk("%s %s cpu %d remaining %d # %lu", | |
698 | __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, | |
699 | __entry->done) | |
700 | ); | |
701 | ||
d4c08f2a PM |
702 | #else /* #ifdef CONFIG_RCU_TRACE */ |
703 | ||
704 | #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) | |
486e2593 PM |
705 | #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ |
706 | qsmask) do { } while (0) | |
bd9f0686 PM |
707 | #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ |
708 | level, grplo, grphi, event) \ | |
709 | do { } while (0) | |
9261dd0d | 710 | #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) |
d4c08f2a PM |
711 | #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) |
712 | #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) | |
486e2593 PM |
713 | #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ |
714 | grplo, grphi, gp_tasks) do { } \ | |
715 | while (0) | |
d4c08f2a | 716 | #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) |
4145fa7f | 717 | #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) |
433cdddc | 718 | #define trace_rcu_prep_idle(reason) do { } while (0) |
486e2593 PM |
719 | #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) |
720 | #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ | |
721 | do { } while (0) | |
722 | #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ | |
723 | do { } while (0) | |
d4c08f2a PM |
724 | #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) |
725 | #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) | |
4968c300 PM |
726 | #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ |
727 | do { } while (0) | |
52494535 PM |
728 | #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ |
729 | do { } while (0) | |
a83eff0a | 730 | #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) |
d4c08f2a PM |
731 | |
732 | #endif /* #else #ifdef CONFIG_RCU_TRACE */ | |
733 | ||
29c00b4a PM |
734 | #endif /* _TRACE_RCU_H */ |
735 | ||
736 | /* This part must be outside protection */ | |
737 | #include <trace/define_trace.h> |