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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 | ||
28f6569a | 39 | #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) |
d4c08f2a PM |
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. | |
9fdd3bc9 | 183 | * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. |
9261dd0d | 184 | * "WakeOvf": Wake rcuo kthread, CB list is huge. |
9fdd3bc9 | 185 | * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. |
9261dd0d PM |
186 | * "WakeNot": Don't wake rcuo kthread. |
187 | * "WakeNotPoll": Don't wake rcuo kthread because it is polling. | |
9fdd3bc9 | 188 | * "DeferredWake": Carried out the "IsDeferred" wakeup. |
69a79bb1 PM |
189 | * "Poll": Start of new polling cycle for rcu_nocb_poll. |
190 | * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. | |
9261dd0d PM |
191 | * "WokeEmpty": rcuo kthread woke to find empty list. |
192 | * "WokeNonEmpty": rcuo kthread woke to find non-empty list. | |
69a79bb1 PM |
193 | * "WaitQueue": Enqueue partially done, timed wait for it to complete. |
194 | * "WokeQueue": Partial enqueue now complete. | |
9261dd0d PM |
195 | */ |
196 | TRACE_EVENT(rcu_nocb_wake, | |
197 | ||
198 | TP_PROTO(const char *rcuname, int cpu, const char *reason), | |
199 | ||
200 | TP_ARGS(rcuname, cpu, reason), | |
201 | ||
202 | TP_STRUCT__entry( | |
203 | __field(const char *, rcuname) | |
204 | __field(int, cpu) | |
205 | __field(const char *, reason) | |
206 | ), | |
207 | ||
208 | TP_fast_assign( | |
209 | __entry->rcuname = rcuname; | |
210 | __entry->cpu = cpu; | |
211 | __entry->reason = reason; | |
212 | ), | |
213 | ||
214 | TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) | |
215 | ); | |
216 | ||
d4c08f2a PM |
217 | /* |
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. | |
222 | */ | |
223 | TRACE_EVENT(rcu_preempt_task, | |
224 | ||
e66c33d5 | 225 | TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), |
d4c08f2a PM |
226 | |
227 | TP_ARGS(rcuname, pid, gpnum), | |
228 | ||
229 | TP_STRUCT__entry( | |
e66c33d5 | 230 | __field(const char *, rcuname) |
d4c08f2a PM |
231 | __field(unsigned long, gpnum) |
232 | __field(int, pid) | |
233 | ), | |
234 | ||
235 | TP_fast_assign( | |
236 | __entry->rcuname = rcuname; | |
237 | __entry->gpnum = gpnum; | |
238 | __entry->pid = pid; | |
239 | ), | |
240 | ||
241 | TP_printk("%s %lu %d", | |
242 | __entry->rcuname, __entry->gpnum, __entry->pid) | |
243 | ); | |
244 | ||
245 | /* | |
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. | |
249 | */ | |
250 | TRACE_EVENT(rcu_unlock_preempted_task, | |
251 | ||
e66c33d5 | 252 | TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), |
d4c08f2a PM |
253 | |
254 | TP_ARGS(rcuname, gpnum, pid), | |
255 | ||
256 | TP_STRUCT__entry( | |
e66c33d5 | 257 | __field(const char *, rcuname) |
d4c08f2a PM |
258 | __field(unsigned long, gpnum) |
259 | __field(int, pid) | |
260 | ), | |
261 | ||
262 | TP_fast_assign( | |
263 | __entry->rcuname = rcuname; | |
264 | __entry->gpnum = gpnum; | |
265 | __entry->pid = pid; | |
266 | ), | |
267 | ||
268 | TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) | |
269 | ); | |
270 | ||
271 | /* | |
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. | |
278 | */ | |
279 | TRACE_EVENT(rcu_quiescent_state_report, | |
280 | ||
e66c33d5 | 281 | TP_PROTO(const char *rcuname, unsigned long gpnum, |
d4c08f2a PM |
282 | unsigned long mask, unsigned long qsmask, |
283 | u8 level, int grplo, int grphi, int gp_tasks), | |
284 | ||
285 | TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), | |
286 | ||
287 | TP_STRUCT__entry( | |
e66c33d5 | 288 | __field(const char *, rcuname) |
d4c08f2a PM |
289 | __field(unsigned long, gpnum) |
290 | __field(unsigned long, mask) | |
291 | __field(unsigned long, qsmask) | |
292 | __field(u8, level) | |
293 | __field(int, grplo) | |
294 | __field(int, grphi) | |
295 | __field(u8, gp_tasks) | |
296 | ), | |
297 | ||
298 | TP_fast_assign( | |
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; | |
307 | ), | |
308 | ||
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) | |
313 | ); | |
314 | ||
315 | /* | |
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 | |
321 | * too long. | |
322 | */ | |
323 | TRACE_EVENT(rcu_fqs, | |
324 | ||
e66c33d5 | 325 | TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), |
d4c08f2a PM |
326 | |
327 | TP_ARGS(rcuname, gpnum, cpu, qsevent), | |
328 | ||
329 | TP_STRUCT__entry( | |
e66c33d5 | 330 | __field(const char *, rcuname) |
d4c08f2a PM |
331 | __field(unsigned long, gpnum) |
332 | __field(int, cpu) | |
e66c33d5 | 333 | __field(const char *, qsevent) |
d4c08f2a PM |
334 | ), |
335 | ||
336 | TP_fast_assign( | |
337 | __entry->rcuname = rcuname; | |
338 | __entry->gpnum = gpnum; | |
339 | __entry->cpu = cpu; | |
340 | __entry->qsevent = qsevent; | |
341 | ), | |
342 | ||
343 | TP_printk("%s %lu %d %s", | |
344 | __entry->rcuname, __entry->gpnum, | |
345 | __entry->cpu, __entry->qsevent) | |
346 | ); | |
347 | ||
28f6569a | 348 | #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ |
d4c08f2a PM |
349 | |
350 | /* | |
351 | * Tracepoint for dyntick-idle entry/exit events. These take a string | |
045fb931 PM |
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. | |
357 | * | |
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. | |
d4c08f2a PM |
362 | */ |
363 | TRACE_EVENT(rcu_dyntick, | |
364 | ||
e66c33d5 | 365 | TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), |
d4c08f2a | 366 | |
4145fa7f | 367 | TP_ARGS(polarity, oldnesting, newnesting), |
d4c08f2a PM |
368 | |
369 | TP_STRUCT__entry( | |
e66c33d5 | 370 | __field(const char *, polarity) |
4145fa7f PM |
371 | __field(long long, oldnesting) |
372 | __field(long long, newnesting) | |
d4c08f2a PM |
373 | ), |
374 | ||
375 | TP_fast_assign( | |
376 | __entry->polarity = polarity; | |
4145fa7f PM |
377 | __entry->oldnesting = oldnesting; |
378 | __entry->newnesting = newnesting; | |
d4c08f2a PM |
379 | ), |
380 | ||
4145fa7f PM |
381 | TP_printk("%s %llx %llx", __entry->polarity, |
382 | __entry->oldnesting, __entry->newnesting) | |
d4c08f2a PM |
383 | ); |
384 | ||
433cdddc PM |
385 | /* |
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. | |
393 | * | |
394 | * These tracepoints take a string as argument: | |
395 | * | |
396 | * "No callbacks": Nothing to do, no callbacks on this CPU. | |
397 | * "In holdoff": Nothing to do, holding off after unsuccessful attempt. | |
433cdddc | 398 | * "Begin holdoff": Attempt failed, don't retry until next jiffy. |
7cb92499 | 399 | * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. |
fd4b3526 | 400 | * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. |
433cdddc PM |
401 | * "More callbacks": Still more callbacks, try again to clear them out. |
402 | * "Callbacks drained": All callbacks processed, off to dyntick idle! | |
7cb92499 | 403 | * "Timer": Timer fired to cause CPU to continue processing callbacks. |
21e52e15 | 404 | * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. |
2fdbb31b | 405 | * "Cleanup after idle": Idle exited, timer canceled. |
433cdddc PM |
406 | */ |
407 | TRACE_EVENT(rcu_prep_idle, | |
408 | ||
e66c33d5 | 409 | TP_PROTO(const char *reason), |
433cdddc PM |
410 | |
411 | TP_ARGS(reason), | |
412 | ||
413 | TP_STRUCT__entry( | |
e66c33d5 | 414 | __field(const char *, reason) |
433cdddc PM |
415 | ), |
416 | ||
417 | TP_fast_assign( | |
418 | __entry->reason = reason; | |
419 | ), | |
420 | ||
421 | TP_printk("%s", __entry->reason) | |
422 | ); | |
423 | ||
d4c08f2a PM |
424 | /* |
425 | * Tracepoint for the registration of a single RCU callback function. | |
426 | * The first argument is the type of RCU, the second argument is | |
486e2593 PM |
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. | |
d4c08f2a PM |
430 | */ |
431 | TRACE_EVENT(rcu_callback, | |
432 | ||
e66c33d5 | 433 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, |
486e2593 | 434 | long qlen), |
d4c08f2a | 435 | |
486e2593 | 436 | TP_ARGS(rcuname, rhp, qlen_lazy, qlen), |
d4c08f2a PM |
437 | |
438 | TP_STRUCT__entry( | |
e66c33d5 | 439 | __field(const char *, rcuname) |
d4c08f2a PM |
440 | __field(void *, rhp) |
441 | __field(void *, func) | |
486e2593 | 442 | __field(long, qlen_lazy) |
d4c08f2a PM |
443 | __field(long, qlen) |
444 | ), | |
445 | ||
446 | TP_fast_assign( | |
447 | __entry->rcuname = rcuname; | |
448 | __entry->rhp = rhp; | |
449 | __entry->func = rhp->func; | |
486e2593 | 450 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
451 | __entry->qlen = qlen; |
452 | ), | |
453 | ||
486e2593 PM |
454 | TP_printk("%s rhp=%p func=%pf %ld/%ld", |
455 | __entry->rcuname, __entry->rhp, __entry->func, | |
456 | __entry->qlen_lazy, __entry->qlen) | |
d4c08f2a PM |
457 | ); |
458 | ||
459 | /* | |
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, | |
486e2593 PM |
464 | * the fourth argument is the number of lazy callbacks queued, and the |
465 | * fifth argument is the total number of callbacks queued. | |
d4c08f2a PM |
466 | */ |
467 | TRACE_EVENT(rcu_kfree_callback, | |
468 | ||
e66c33d5 | 469 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, |
486e2593 | 470 | long qlen_lazy, long qlen), |
d4c08f2a | 471 | |
486e2593 | 472 | TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), |
d4c08f2a PM |
473 | |
474 | TP_STRUCT__entry( | |
e66c33d5 | 475 | __field(const char *, rcuname) |
d4c08f2a PM |
476 | __field(void *, rhp) |
477 | __field(unsigned long, offset) | |
486e2593 | 478 | __field(long, qlen_lazy) |
d4c08f2a PM |
479 | __field(long, qlen) |
480 | ), | |
481 | ||
482 | TP_fast_assign( | |
483 | __entry->rcuname = rcuname; | |
484 | __entry->rhp = rhp; | |
485 | __entry->offset = offset; | |
486e2593 | 486 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
487 | __entry->qlen = qlen; |
488 | ), | |
489 | ||
486e2593 | 490 | TP_printk("%s rhp=%p func=%ld %ld/%ld", |
d4c08f2a | 491 | __entry->rcuname, __entry->rhp, __entry->offset, |
486e2593 | 492 | __entry->qlen_lazy, __entry->qlen) |
d4c08f2a PM |
493 | ); |
494 | ||
300df91c PM |
495 | /* |
496 | * Tracepoint for marking the beginning rcu_do_batch, performed to start | |
72fe701b | 497 | * RCU callback invocation. The first argument is the RCU flavor, |
486e2593 PM |
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. | |
29c00b4a PM |
501 | */ |
502 | TRACE_EVENT(rcu_batch_start, | |
503 | ||
e66c33d5 | 504 | TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), |
29c00b4a | 505 | |
486e2593 | 506 | TP_ARGS(rcuname, qlen_lazy, qlen, blimit), |
29c00b4a PM |
507 | |
508 | TP_STRUCT__entry( | |
e66c33d5 | 509 | __field(const char *, rcuname) |
486e2593 | 510 | __field(long, qlen_lazy) |
300df91c | 511 | __field(long, qlen) |
3aac7a8d | 512 | __field(long, blimit) |
29c00b4a PM |
513 | ), |
514 | ||
515 | TP_fast_assign( | |
72fe701b | 516 | __entry->rcuname = rcuname; |
486e2593 | 517 | __entry->qlen_lazy = qlen_lazy; |
300df91c PM |
518 | __entry->qlen = qlen; |
519 | __entry->blimit = blimit; | |
29c00b4a PM |
520 | ), |
521 | ||
3aac7a8d | 522 | TP_printk("%s CBs=%ld/%ld bl=%ld", |
486e2593 PM |
523 | __entry->rcuname, __entry->qlen_lazy, __entry->qlen, |
524 | __entry->blimit) | |
29c00b4a PM |
525 | ); |
526 | ||
527 | /* | |
300df91c | 528 | * Tracepoint for the invocation of a single RCU callback function. |
d4c08f2a PM |
529 | * The first argument is the type of RCU, and the second argument is |
530 | * a pointer to the RCU callback itself. | |
29c00b4a PM |
531 | */ |
532 | TRACE_EVENT(rcu_invoke_callback, | |
533 | ||
e66c33d5 | 534 | TP_PROTO(const char *rcuname, struct rcu_head *rhp), |
29c00b4a | 535 | |
d4c08f2a | 536 | TP_ARGS(rcuname, rhp), |
29c00b4a PM |
537 | |
538 | TP_STRUCT__entry( | |
e66c33d5 | 539 | __field(const char *, rcuname) |
d4c08f2a PM |
540 | __field(void *, rhp) |
541 | __field(void *, func) | |
29c00b4a PM |
542 | ), |
543 | ||
544 | TP_fast_assign( | |
d4c08f2a | 545 | __entry->rcuname = rcuname; |
300df91c PM |
546 | __entry->rhp = rhp; |
547 | __entry->func = rhp->func; | |
29c00b4a PM |
548 | ), |
549 | ||
d4c08f2a PM |
550 | TP_printk("%s rhp=%p func=%pf", |
551 | __entry->rcuname, __entry->rhp, __entry->func) | |
29c00b4a PM |
552 | ); |
553 | ||
554 | /* | |
300df91c | 555 | * Tracepoint for the invocation of a single RCU callback of the special |
d4c08f2a PM |
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 | |
559 | * data structure. | |
29c00b4a PM |
560 | */ |
561 | TRACE_EVENT(rcu_invoke_kfree_callback, | |
562 | ||
e66c33d5 | 563 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), |
29c00b4a | 564 | |
d4c08f2a | 565 | TP_ARGS(rcuname, rhp, offset), |
29c00b4a PM |
566 | |
567 | TP_STRUCT__entry( | |
e66c33d5 | 568 | __field(const char *, rcuname) |
d4c08f2a | 569 | __field(void *, rhp) |
300df91c | 570 | __field(unsigned long, offset) |
29c00b4a PM |
571 | ), |
572 | ||
573 | TP_fast_assign( | |
d4c08f2a | 574 | __entry->rcuname = rcuname; |
300df91c | 575 | __entry->rhp = rhp; |
29c00b4a PM |
576 | __entry->offset = offset; |
577 | ), | |
578 | ||
d4c08f2a PM |
579 | TP_printk("%s rhp=%p func=%ld", |
580 | __entry->rcuname, __entry->rhp, __entry->offset) | |
29c00b4a PM |
581 | ); |
582 | ||
583 | /* | |
300df91c | 584 | * Tracepoint for exiting rcu_do_batch after RCU callbacks have been |
4968c300 PM |
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(). | |
29c00b4a PM |
593 | */ |
594 | TRACE_EVENT(rcu_batch_end, | |
595 | ||
e66c33d5 | 596 | TP_PROTO(const char *rcuname, int callbacks_invoked, |
15f5191b | 597 | char cb, char nr, char iit, char risk), |
29c00b4a | 598 | |
4968c300 | 599 | TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), |
29c00b4a PM |
600 | |
601 | TP_STRUCT__entry( | |
e66c33d5 | 602 | __field(const char *, rcuname) |
300df91c | 603 | __field(int, callbacks_invoked) |
15f5191b PM |
604 | __field(char, cb) |
605 | __field(char, nr) | |
606 | __field(char, iit) | |
607 | __field(char, risk) | |
29c00b4a PM |
608 | ), |
609 | ||
610 | TP_fast_assign( | |
72fe701b | 611 | __entry->rcuname = rcuname; |
300df91c | 612 | __entry->callbacks_invoked = callbacks_invoked; |
4968c300 PM |
613 | __entry->cb = cb; |
614 | __entry->nr = nr; | |
615 | __entry->iit = iit; | |
616 | __entry->risk = risk; | |
617 | ), | |
618 | ||
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' : '.') | |
29c00b4a PM |
625 | ); |
626 | ||
91afaf30 PM |
627 | /* |
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. | |
631 | */ | |
632 | TRACE_EVENT(rcu_torture_read, | |
633 | ||
e66c33d5 | 634 | TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, |
52494535 | 635 | unsigned long secs, unsigned long c_old, unsigned long c), |
91afaf30 | 636 | |
52494535 | 637 | TP_ARGS(rcutorturename, rhp, secs, c_old, c), |
91afaf30 PM |
638 | |
639 | TP_STRUCT__entry( | |
e66c33d5 | 640 | __field(const char *, rcutorturename) |
91afaf30 | 641 | __field(struct rcu_head *, rhp) |
52494535 PM |
642 | __field(unsigned long, secs) |
643 | __field(unsigned long, c_old) | |
644 | __field(unsigned long, c) | |
91afaf30 PM |
645 | ), |
646 | ||
647 | TP_fast_assign( | |
648 | __entry->rcutorturename = rcutorturename; | |
649 | __entry->rhp = rhp; | |
52494535 PM |
650 | __entry->secs = secs; |
651 | __entry->c_old = c_old; | |
652 | __entry->c = c; | |
91afaf30 PM |
653 | ), |
654 | ||
52494535 PM |
655 | TP_printk("%s torture read %p %luus c: %lu %lu", |
656 | __entry->rcutorturename, __entry->rhp, | |
657 | __entry->secs, __entry->c_old, __entry->c) | |
91afaf30 PM |
658 | ); |
659 | ||
a83eff0a PM |
660 | /* |
661 | * Tracepoint for _rcu_barrier() execution. The string "s" describes | |
662 | * the _rcu_barrier phase: | |
d7e29933 PM |
663 | * "Begin": _rcu_barrier() started. |
664 | * "Check": _rcu_barrier() checking for piggybacking. | |
665 | * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. | |
666 | * "Inc1": _rcu_barrier() piggyback check counter incremented. | |
667 | * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU | |
668 | * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. | |
669 | * "OnlineQ": _rcu_barrier() found online CPU with callbacks. | |
670 | * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. | |
a83eff0a PM |
671 | * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. |
672 | * "CB": An rcu_barrier_callback() invoked a callback, not the last. | |
673 | * "LastCB": An rcu_barrier_callback() invoked the last callback. | |
d7e29933 | 674 | * "Inc2": _rcu_barrier() piggyback check counter incremented. |
a83eff0a PM |
675 | * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument |
676 | * is the count of remaining callbacks, and "done" is the piggybacking count. | |
677 | */ | |
678 | TRACE_EVENT(rcu_barrier, | |
679 | ||
e66c33d5 | 680 | TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), |
a83eff0a PM |
681 | |
682 | TP_ARGS(rcuname, s, cpu, cnt, done), | |
683 | ||
684 | TP_STRUCT__entry( | |
e66c33d5 SRRH |
685 | __field(const char *, rcuname) |
686 | __field(const char *, s) | |
a83eff0a PM |
687 | __field(int, cpu) |
688 | __field(int, cnt) | |
689 | __field(unsigned long, done) | |
690 | ), | |
691 | ||
692 | TP_fast_assign( | |
693 | __entry->rcuname = rcuname; | |
694 | __entry->s = s; | |
695 | __entry->cpu = cpu; | |
696 | __entry->cnt = cnt; | |
697 | __entry->done = done; | |
698 | ), | |
699 | ||
700 | TP_printk("%s %s cpu %d remaining %d # %lu", | |
701 | __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, | |
702 | __entry->done) | |
703 | ); | |
704 | ||
d4c08f2a PM |
705 | #else /* #ifdef CONFIG_RCU_TRACE */ |
706 | ||
707 | #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) | |
486e2593 PM |
708 | #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ |
709 | qsmask) do { } while (0) | |
bd9f0686 PM |
710 | #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ |
711 | level, grplo, grphi, event) \ | |
712 | do { } while (0) | |
9261dd0d | 713 | #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) |
d4c08f2a PM |
714 | #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) |
715 | #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) | |
486e2593 PM |
716 | #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ |
717 | grplo, grphi, gp_tasks) do { } \ | |
718 | while (0) | |
d4c08f2a | 719 | #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) |
4145fa7f | 720 | #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) |
433cdddc | 721 | #define trace_rcu_prep_idle(reason) do { } while (0) |
486e2593 PM |
722 | #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) |
723 | #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ | |
724 | do { } while (0) | |
725 | #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ | |
726 | do { } while (0) | |
d4c08f2a PM |
727 | #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) |
728 | #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) | |
4968c300 PM |
729 | #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ |
730 | do { } while (0) | |
52494535 PM |
731 | #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ |
732 | do { } while (0) | |
a83eff0a | 733 | #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) |
d4c08f2a PM |
734 | |
735 | #endif /* #else #ifdef CONFIG_RCU_TRACE */ | |
736 | ||
29c00b4a PM |
737 | #endif /* _TRACE_RCU_H */ |
738 | ||
739 | /* This part must be outside protection */ | |
740 | #include <trace/define_trace.h> |