Commit | Line | Data |
---|---|---|
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. | |
48 | * "start": Start a grace period. | |
49 | * "cpustart": CPU first notices a grace-period start. | |
50 | * "cpuqs": CPU passes through a quiescent state. | |
51 | * "cpuonl": CPU comes online. | |
52 | * "cpuofl": CPU goes offline. | |
53 | * "reqwait": GP kthread sleeps waiting for grace-period request. | |
54 | * "reqwaitsig": GP kthread awakened by signal from reqwait state. | |
55 | * "fqswait": GP kthread waiting until time to force quiescent states. | |
56 | * "fqsstart": GP kthread starts forcing quiescent states. | |
57 | * "fqsend": GP kthread done forcing quiescent states. | |
58 | * "fqswaitsig": GP kthread awakened by signal from fqswait state. | |
59 | * "end": End a grace period. | |
60 | * "cpuend": CPU first notices a grace-period end. | |
d4c08f2a PM |
61 | */ |
62 | TRACE_EVENT(rcu_grace_period, | |
63 | ||
e66c33d5 | 64 | TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent), |
d4c08f2a PM |
65 | |
66 | TP_ARGS(rcuname, gpnum, gpevent), | |
67 | ||
68 | TP_STRUCT__entry( | |
e66c33d5 | 69 | __field(const char *, rcuname) |
d4c08f2a | 70 | __field(unsigned long, gpnum) |
e66c33d5 | 71 | __field(const char *, gpevent) |
d4c08f2a PM |
72 | ), |
73 | ||
74 | TP_fast_assign( | |
75 | __entry->rcuname = rcuname; | |
76 | __entry->gpnum = gpnum; | |
77 | __entry->gpevent = gpevent; | |
78 | ), | |
79 | ||
80 | TP_printk("%s %lu %s", | |
81 | __entry->rcuname, __entry->gpnum, __entry->gpevent) | |
82 | ); | |
83 | ||
09c7b890 | 84 | /* |
bd9f0686 PM |
85 | * Tracepoint for future grace-period events, including those for no-callbacks |
86 | * CPUs. The caller should pull the data from the rcu_node structure, | |
87 | * other than rcuname, which comes from the rcu_state structure, and event, | |
88 | * which is one of the following: | |
09c7b890 PM |
89 | * |
90 | * "Startleaf": Request a nocb grace period based on leaf-node data. | |
91 | * "Startedleaf": Leaf-node start proved sufficient. | |
92 | * "Startedleafroot": Leaf-node start proved sufficient after checking root. | |
93 | * "Startedroot": Requested a nocb grace period based on root-node data. | |
94 | * "StartWait": Start waiting for the requested grace period. | |
95 | * "ResumeWait": Resume waiting after signal. | |
96 | * "EndWait": Complete wait. | |
97 | * "Cleanup": Clean up rcu_node structure after previous GP. | |
98 | * "CleanupMore": Clean up, and another no-CB GP is needed. | |
99 | */ | |
bd9f0686 | 100 | TRACE_EVENT(rcu_future_grace_period, |
09c7b890 | 101 | |
e66c33d5 | 102 | TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed, |
09c7b890 | 103 | unsigned long c, u8 level, int grplo, int grphi, |
e66c33d5 | 104 | const char *gpevent), |
09c7b890 PM |
105 | |
106 | TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent), | |
107 | ||
108 | TP_STRUCT__entry( | |
e66c33d5 | 109 | __field(const char *, rcuname) |
09c7b890 PM |
110 | __field(unsigned long, gpnum) |
111 | __field(unsigned long, completed) | |
112 | __field(unsigned long, c) | |
113 | __field(u8, level) | |
114 | __field(int, grplo) | |
115 | __field(int, grphi) | |
e66c33d5 | 116 | __field(const char *, gpevent) |
09c7b890 PM |
117 | ), |
118 | ||
119 | TP_fast_assign( | |
120 | __entry->rcuname = rcuname; | |
121 | __entry->gpnum = gpnum; | |
122 | __entry->completed = completed; | |
123 | __entry->c = c; | |
124 | __entry->level = level; | |
125 | __entry->grplo = grplo; | |
126 | __entry->grphi = grphi; | |
127 | __entry->gpevent = gpevent; | |
128 | ), | |
129 | ||
130 | TP_printk("%s %lu %lu %lu %u %d %d %s", | |
131 | __entry->rcuname, __entry->gpnum, __entry->completed, | |
132 | __entry->c, __entry->level, __entry->grplo, __entry->grphi, | |
133 | __entry->gpevent) | |
134 | ); | |
135 | ||
d4c08f2a PM |
136 | /* |
137 | * Tracepoint for grace-period-initialization events. These are | |
138 | * distinguished by the type of RCU, the new grace-period number, the | |
139 | * rcu_node structure level, the starting and ending CPU covered by the | |
140 | * rcu_node structure, and the mask of CPUs that will be waited for. | |
141 | * All but the type of RCU are extracted from the rcu_node structure. | |
142 | */ | |
143 | TRACE_EVENT(rcu_grace_period_init, | |
144 | ||
e66c33d5 | 145 | TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level, |
d4c08f2a PM |
146 | int grplo, int grphi, unsigned long qsmask), |
147 | ||
148 | TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), | |
149 | ||
150 | TP_STRUCT__entry( | |
e66c33d5 | 151 | __field(const char *, rcuname) |
d4c08f2a PM |
152 | __field(unsigned long, gpnum) |
153 | __field(u8, level) | |
154 | __field(int, grplo) | |
155 | __field(int, grphi) | |
156 | __field(unsigned long, qsmask) | |
157 | ), | |
158 | ||
159 | TP_fast_assign( | |
160 | __entry->rcuname = rcuname; | |
161 | __entry->gpnum = gpnum; | |
162 | __entry->level = level; | |
163 | __entry->grplo = grplo; | |
164 | __entry->grphi = grphi; | |
165 | __entry->qsmask = qsmask; | |
166 | ), | |
167 | ||
168 | TP_printk("%s %lu %u %d %d %lx", | |
169 | __entry->rcuname, __entry->gpnum, __entry->level, | |
170 | __entry->grplo, __entry->grphi, __entry->qsmask) | |
171 | ); | |
172 | ||
173 | /* | |
174 | * Tracepoint for tasks blocking within preemptible-RCU read-side | |
175 | * critical sections. Track the type of RCU (which one day might | |
176 | * include SRCU), the grace-period number that the task is blocking | |
177 | * (the current or the next), and the task's PID. | |
178 | */ | |
179 | TRACE_EVENT(rcu_preempt_task, | |
180 | ||
e66c33d5 | 181 | TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), |
d4c08f2a PM |
182 | |
183 | TP_ARGS(rcuname, pid, gpnum), | |
184 | ||
185 | TP_STRUCT__entry( | |
e66c33d5 | 186 | __field(const char *, rcuname) |
d4c08f2a PM |
187 | __field(unsigned long, gpnum) |
188 | __field(int, pid) | |
189 | ), | |
190 | ||
191 | TP_fast_assign( | |
192 | __entry->rcuname = rcuname; | |
193 | __entry->gpnum = gpnum; | |
194 | __entry->pid = pid; | |
195 | ), | |
196 | ||
197 | TP_printk("%s %lu %d", | |
198 | __entry->rcuname, __entry->gpnum, __entry->pid) | |
199 | ); | |
200 | ||
201 | /* | |
202 | * Tracepoint for tasks that blocked within a given preemptible-RCU | |
203 | * read-side critical section exiting that critical section. Track the | |
204 | * type of RCU (which one day might include SRCU) and the task's PID. | |
205 | */ | |
206 | TRACE_EVENT(rcu_unlock_preempted_task, | |
207 | ||
e66c33d5 | 208 | TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), |
d4c08f2a PM |
209 | |
210 | TP_ARGS(rcuname, gpnum, pid), | |
211 | ||
212 | TP_STRUCT__entry( | |
e66c33d5 | 213 | __field(const char *, rcuname) |
d4c08f2a PM |
214 | __field(unsigned long, gpnum) |
215 | __field(int, pid) | |
216 | ), | |
217 | ||
218 | TP_fast_assign( | |
219 | __entry->rcuname = rcuname; | |
220 | __entry->gpnum = gpnum; | |
221 | __entry->pid = pid; | |
222 | ), | |
223 | ||
224 | TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) | |
225 | ); | |
226 | ||
227 | /* | |
228 | * Tracepoint for quiescent-state-reporting events. These are | |
229 | * distinguished by the type of RCU, the grace-period number, the | |
230 | * mask of quiescent lower-level entities, the rcu_node structure level, | |
231 | * the starting and ending CPU covered by the rcu_node structure, and | |
232 | * whether there are any blocked tasks blocking the current grace period. | |
233 | * All but the type of RCU are extracted from the rcu_node structure. | |
234 | */ | |
235 | TRACE_EVENT(rcu_quiescent_state_report, | |
236 | ||
e66c33d5 | 237 | TP_PROTO(const char *rcuname, unsigned long gpnum, |
d4c08f2a PM |
238 | unsigned long mask, unsigned long qsmask, |
239 | u8 level, int grplo, int grphi, int gp_tasks), | |
240 | ||
241 | TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), | |
242 | ||
243 | TP_STRUCT__entry( | |
e66c33d5 | 244 | __field(const char *, rcuname) |
d4c08f2a PM |
245 | __field(unsigned long, gpnum) |
246 | __field(unsigned long, mask) | |
247 | __field(unsigned long, qsmask) | |
248 | __field(u8, level) | |
249 | __field(int, grplo) | |
250 | __field(int, grphi) | |
251 | __field(u8, gp_tasks) | |
252 | ), | |
253 | ||
254 | TP_fast_assign( | |
255 | __entry->rcuname = rcuname; | |
256 | __entry->gpnum = gpnum; | |
257 | __entry->mask = mask; | |
258 | __entry->qsmask = qsmask; | |
259 | __entry->level = level; | |
260 | __entry->grplo = grplo; | |
261 | __entry->grphi = grphi; | |
262 | __entry->gp_tasks = gp_tasks; | |
263 | ), | |
264 | ||
265 | TP_printk("%s %lu %lx>%lx %u %d %d %u", | |
266 | __entry->rcuname, __entry->gpnum, | |
267 | __entry->mask, __entry->qsmask, __entry->level, | |
268 | __entry->grplo, __entry->grphi, __entry->gp_tasks) | |
269 | ); | |
270 | ||
271 | /* | |
272 | * Tracepoint for quiescent states detected by force_quiescent_state(). | |
273 | * These trace events include the type of RCU, the grace-period number | |
274 | * that was blocked by the CPU, the CPU itself, and the type of quiescent | |
275 | * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, | |
276 | * or "kick" when kicking a CPU that has been in dyntick-idle mode for | |
277 | * too long. | |
278 | */ | |
279 | TRACE_EVENT(rcu_fqs, | |
280 | ||
e66c33d5 | 281 | TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), |
d4c08f2a PM |
282 | |
283 | TP_ARGS(rcuname, gpnum, cpu, qsevent), | |
284 | ||
285 | TP_STRUCT__entry( | |
e66c33d5 | 286 | __field(const char *, rcuname) |
d4c08f2a PM |
287 | __field(unsigned long, gpnum) |
288 | __field(int, cpu) | |
e66c33d5 | 289 | __field(const char *, qsevent) |
d4c08f2a PM |
290 | ), |
291 | ||
292 | TP_fast_assign( | |
293 | __entry->rcuname = rcuname; | |
294 | __entry->gpnum = gpnum; | |
295 | __entry->cpu = cpu; | |
296 | __entry->qsevent = qsevent; | |
297 | ), | |
298 | ||
299 | TP_printk("%s %lu %d %s", | |
300 | __entry->rcuname, __entry->gpnum, | |
301 | __entry->cpu, __entry->qsevent) | |
302 | ); | |
303 | ||
304 | #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) */ | |
305 | ||
306 | /* | |
307 | * Tracepoint for dyntick-idle entry/exit events. These take a string | |
045fb931 PM |
308 | * as argument: "Start" for entering dyntick-idle mode, "End" for |
309 | * leaving it, "--=" for events moving towards idle, and "++=" for events | |
310 | * moving away from idle. "Error on entry: not idle task" and "Error on | |
311 | * exit: not idle task" indicate that a non-idle task is erroneously | |
312 | * toying with the idle loop. | |
313 | * | |
314 | * These events also take a pair of numbers, which indicate the nesting | |
315 | * depth before and after the event of interest. Note that task-related | |
316 | * events use the upper bits of each number, while interrupt-related | |
317 | * events use the lower bits. | |
d4c08f2a PM |
318 | */ |
319 | TRACE_EVENT(rcu_dyntick, | |
320 | ||
e66c33d5 | 321 | TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), |
d4c08f2a | 322 | |
4145fa7f | 323 | TP_ARGS(polarity, oldnesting, newnesting), |
d4c08f2a PM |
324 | |
325 | TP_STRUCT__entry( | |
e66c33d5 | 326 | __field(const char *, polarity) |
4145fa7f PM |
327 | __field(long long, oldnesting) |
328 | __field(long long, newnesting) | |
d4c08f2a PM |
329 | ), |
330 | ||
331 | TP_fast_assign( | |
332 | __entry->polarity = polarity; | |
4145fa7f PM |
333 | __entry->oldnesting = oldnesting; |
334 | __entry->newnesting = newnesting; | |
d4c08f2a PM |
335 | ), |
336 | ||
4145fa7f PM |
337 | TP_printk("%s %llx %llx", __entry->polarity, |
338 | __entry->oldnesting, __entry->newnesting) | |
d4c08f2a PM |
339 | ); |
340 | ||
433cdddc PM |
341 | /* |
342 | * Tracepoint for RCU preparation for idle, the goal being to get RCU | |
343 | * processing done so that the current CPU can shut off its scheduling | |
344 | * clock and enter dyntick-idle mode. One way to accomplish this is | |
345 | * to drain all RCU callbacks from this CPU, and the other is to have | |
346 | * done everything RCU requires for the current grace period. In this | |
347 | * latter case, the CPU will be awakened at the end of the current grace | |
348 | * period in order to process the remainder of its callbacks. | |
349 | * | |
350 | * These tracepoints take a string as argument: | |
351 | * | |
352 | * "No callbacks": Nothing to do, no callbacks on this CPU. | |
353 | * "In holdoff": Nothing to do, holding off after unsuccessful attempt. | |
433cdddc | 354 | * "Begin holdoff": Attempt failed, don't retry until next jiffy. |
7cb92499 | 355 | * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. |
fd4b3526 | 356 | * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. |
433cdddc PM |
357 | * "More callbacks": Still more callbacks, try again to clear them out. |
358 | * "Callbacks drained": All callbacks processed, off to dyntick idle! | |
7cb92499 | 359 | * "Timer": Timer fired to cause CPU to continue processing callbacks. |
21e52e15 | 360 | * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. |
2fdbb31b | 361 | * "Cleanup after idle": Idle exited, timer canceled. |
433cdddc PM |
362 | */ |
363 | TRACE_EVENT(rcu_prep_idle, | |
364 | ||
e66c33d5 | 365 | TP_PROTO(const char *reason), |
433cdddc PM |
366 | |
367 | TP_ARGS(reason), | |
368 | ||
369 | TP_STRUCT__entry( | |
e66c33d5 | 370 | __field(const char *, reason) |
433cdddc PM |
371 | ), |
372 | ||
373 | TP_fast_assign( | |
374 | __entry->reason = reason; | |
375 | ), | |
376 | ||
377 | TP_printk("%s", __entry->reason) | |
378 | ); | |
379 | ||
d4c08f2a PM |
380 | /* |
381 | * Tracepoint for the registration of a single RCU callback function. | |
382 | * The first argument is the type of RCU, the second argument is | |
486e2593 PM |
383 | * a pointer to the RCU callback itself, the third element is the |
384 | * number of lazy callbacks queued, and the fourth element is the | |
385 | * total number of callbacks queued. | |
d4c08f2a PM |
386 | */ |
387 | TRACE_EVENT(rcu_callback, | |
388 | ||
e66c33d5 | 389 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, |
486e2593 | 390 | long qlen), |
d4c08f2a | 391 | |
486e2593 | 392 | TP_ARGS(rcuname, rhp, qlen_lazy, qlen), |
d4c08f2a PM |
393 | |
394 | TP_STRUCT__entry( | |
e66c33d5 | 395 | __field(const char *, rcuname) |
d4c08f2a PM |
396 | __field(void *, rhp) |
397 | __field(void *, func) | |
486e2593 | 398 | __field(long, qlen_lazy) |
d4c08f2a PM |
399 | __field(long, qlen) |
400 | ), | |
401 | ||
402 | TP_fast_assign( | |
403 | __entry->rcuname = rcuname; | |
404 | __entry->rhp = rhp; | |
405 | __entry->func = rhp->func; | |
486e2593 | 406 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
407 | __entry->qlen = qlen; |
408 | ), | |
409 | ||
486e2593 PM |
410 | TP_printk("%s rhp=%p func=%pf %ld/%ld", |
411 | __entry->rcuname, __entry->rhp, __entry->func, | |
412 | __entry->qlen_lazy, __entry->qlen) | |
d4c08f2a PM |
413 | ); |
414 | ||
415 | /* | |
416 | * Tracepoint for the registration of a single RCU callback of the special | |
417 | * kfree() form. The first argument is the RCU type, the second argument | |
418 | * is a pointer to the RCU callback, the third argument is the offset | |
419 | * of the callback within the enclosing RCU-protected data structure, | |
486e2593 PM |
420 | * the fourth argument is the number of lazy callbacks queued, and the |
421 | * fifth argument is the total number of callbacks queued. | |
d4c08f2a PM |
422 | */ |
423 | TRACE_EVENT(rcu_kfree_callback, | |
424 | ||
e66c33d5 | 425 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, |
486e2593 | 426 | long qlen_lazy, long qlen), |
d4c08f2a | 427 | |
486e2593 | 428 | TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), |
d4c08f2a PM |
429 | |
430 | TP_STRUCT__entry( | |
e66c33d5 | 431 | __field(const char *, rcuname) |
d4c08f2a PM |
432 | __field(void *, rhp) |
433 | __field(unsigned long, offset) | |
486e2593 | 434 | __field(long, qlen_lazy) |
d4c08f2a PM |
435 | __field(long, qlen) |
436 | ), | |
437 | ||
438 | TP_fast_assign( | |
439 | __entry->rcuname = rcuname; | |
440 | __entry->rhp = rhp; | |
441 | __entry->offset = offset; | |
486e2593 | 442 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
443 | __entry->qlen = qlen; |
444 | ), | |
445 | ||
486e2593 | 446 | TP_printk("%s rhp=%p func=%ld %ld/%ld", |
d4c08f2a | 447 | __entry->rcuname, __entry->rhp, __entry->offset, |
486e2593 | 448 | __entry->qlen_lazy, __entry->qlen) |
d4c08f2a PM |
449 | ); |
450 | ||
300df91c PM |
451 | /* |
452 | * Tracepoint for marking the beginning rcu_do_batch, performed to start | |
72fe701b | 453 | * RCU callback invocation. The first argument is the RCU flavor, |
486e2593 PM |
454 | * the second is the number of lazy callbacks queued, the third is |
455 | * the total number of callbacks queued, and the fourth argument is | |
456 | * the current RCU-callback batch limit. | |
29c00b4a PM |
457 | */ |
458 | TRACE_EVENT(rcu_batch_start, | |
459 | ||
e66c33d5 | 460 | TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), |
29c00b4a | 461 | |
486e2593 | 462 | TP_ARGS(rcuname, qlen_lazy, qlen, blimit), |
29c00b4a PM |
463 | |
464 | TP_STRUCT__entry( | |
e66c33d5 | 465 | __field(const char *, rcuname) |
486e2593 | 466 | __field(long, qlen_lazy) |
300df91c | 467 | __field(long, qlen) |
3aac7a8d | 468 | __field(long, blimit) |
29c00b4a PM |
469 | ), |
470 | ||
471 | TP_fast_assign( | |
72fe701b | 472 | __entry->rcuname = rcuname; |
486e2593 | 473 | __entry->qlen_lazy = qlen_lazy; |
300df91c PM |
474 | __entry->qlen = qlen; |
475 | __entry->blimit = blimit; | |
29c00b4a PM |
476 | ), |
477 | ||
3aac7a8d | 478 | TP_printk("%s CBs=%ld/%ld bl=%ld", |
486e2593 PM |
479 | __entry->rcuname, __entry->qlen_lazy, __entry->qlen, |
480 | __entry->blimit) | |
29c00b4a PM |
481 | ); |
482 | ||
483 | /* | |
300df91c | 484 | * Tracepoint for the invocation of a single RCU callback function. |
d4c08f2a PM |
485 | * The first argument is the type of RCU, and the second argument is |
486 | * a pointer to the RCU callback itself. | |
29c00b4a PM |
487 | */ |
488 | TRACE_EVENT(rcu_invoke_callback, | |
489 | ||
e66c33d5 | 490 | TP_PROTO(const char *rcuname, struct rcu_head *rhp), |
29c00b4a | 491 | |
d4c08f2a | 492 | TP_ARGS(rcuname, rhp), |
29c00b4a PM |
493 | |
494 | TP_STRUCT__entry( | |
e66c33d5 | 495 | __field(const char *, rcuname) |
d4c08f2a PM |
496 | __field(void *, rhp) |
497 | __field(void *, func) | |
29c00b4a PM |
498 | ), |
499 | ||
500 | TP_fast_assign( | |
d4c08f2a | 501 | __entry->rcuname = rcuname; |
300df91c PM |
502 | __entry->rhp = rhp; |
503 | __entry->func = rhp->func; | |
29c00b4a PM |
504 | ), |
505 | ||
d4c08f2a PM |
506 | TP_printk("%s rhp=%p func=%pf", |
507 | __entry->rcuname, __entry->rhp, __entry->func) | |
29c00b4a PM |
508 | ); |
509 | ||
510 | /* | |
300df91c | 511 | * Tracepoint for the invocation of a single RCU callback of the special |
d4c08f2a PM |
512 | * kfree() form. The first argument is the RCU flavor, the second |
513 | * argument is a pointer to the RCU callback, and the third argument | |
514 | * is the offset of the callback within the enclosing RCU-protected | |
515 | * data structure. | |
29c00b4a PM |
516 | */ |
517 | TRACE_EVENT(rcu_invoke_kfree_callback, | |
518 | ||
e66c33d5 | 519 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), |
29c00b4a | 520 | |
d4c08f2a | 521 | TP_ARGS(rcuname, rhp, offset), |
29c00b4a PM |
522 | |
523 | TP_STRUCT__entry( | |
e66c33d5 | 524 | __field(const char *, rcuname) |
d4c08f2a | 525 | __field(void *, rhp) |
300df91c | 526 | __field(unsigned long, offset) |
29c00b4a PM |
527 | ), |
528 | ||
529 | TP_fast_assign( | |
d4c08f2a | 530 | __entry->rcuname = rcuname; |
300df91c | 531 | __entry->rhp = rhp; |
29c00b4a PM |
532 | __entry->offset = offset; |
533 | ), | |
534 | ||
d4c08f2a PM |
535 | TP_printk("%s rhp=%p func=%ld", |
536 | __entry->rcuname, __entry->rhp, __entry->offset) | |
29c00b4a PM |
537 | ); |
538 | ||
539 | /* | |
300df91c | 540 | * Tracepoint for exiting rcu_do_batch after RCU callbacks have been |
4968c300 PM |
541 | * invoked. The first argument is the name of the RCU flavor, |
542 | * the second argument is number of callbacks actually invoked, | |
543 | * the third argument (cb) is whether or not any of the callbacks that | |
544 | * were ready to invoke at the beginning of this batch are still | |
545 | * queued, the fourth argument (nr) is the return value of need_resched(), | |
546 | * the fifth argument (iit) is 1 if the current task is the idle task, | |
547 | * and the sixth argument (risk) is the return value from | |
548 | * rcu_is_callbacks_kthread(). | |
29c00b4a PM |
549 | */ |
550 | TRACE_EVENT(rcu_batch_end, | |
551 | ||
e66c33d5 | 552 | TP_PROTO(const char *rcuname, int callbacks_invoked, |
4968c300 | 553 | bool cb, bool nr, bool iit, bool risk), |
29c00b4a | 554 | |
4968c300 | 555 | TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), |
29c00b4a PM |
556 | |
557 | TP_STRUCT__entry( | |
e66c33d5 | 558 | __field(const char *, rcuname) |
300df91c | 559 | __field(int, callbacks_invoked) |
4968c300 PM |
560 | __field(bool, cb) |
561 | __field(bool, nr) | |
562 | __field(bool, iit) | |
563 | __field(bool, risk) | |
29c00b4a PM |
564 | ), |
565 | ||
566 | TP_fast_assign( | |
72fe701b | 567 | __entry->rcuname = rcuname; |
300df91c | 568 | __entry->callbacks_invoked = callbacks_invoked; |
4968c300 PM |
569 | __entry->cb = cb; |
570 | __entry->nr = nr; | |
571 | __entry->iit = iit; | |
572 | __entry->risk = risk; | |
573 | ), | |
574 | ||
575 | TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", | |
576 | __entry->rcuname, __entry->callbacks_invoked, | |
577 | __entry->cb ? 'C' : '.', | |
578 | __entry->nr ? 'S' : '.', | |
579 | __entry->iit ? 'I' : '.', | |
580 | __entry->risk ? 'R' : '.') | |
29c00b4a PM |
581 | ); |
582 | ||
91afaf30 PM |
583 | /* |
584 | * Tracepoint for rcutorture readers. The first argument is the name | |
585 | * of the RCU flavor from rcutorture's viewpoint and the second argument | |
586 | * is the callback address. | |
587 | */ | |
588 | TRACE_EVENT(rcu_torture_read, | |
589 | ||
e66c33d5 | 590 | TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, |
52494535 | 591 | unsigned long secs, unsigned long c_old, unsigned long c), |
91afaf30 | 592 | |
52494535 | 593 | TP_ARGS(rcutorturename, rhp, secs, c_old, c), |
91afaf30 PM |
594 | |
595 | TP_STRUCT__entry( | |
e66c33d5 | 596 | __field(const char *, rcutorturename) |
91afaf30 | 597 | __field(struct rcu_head *, rhp) |
52494535 PM |
598 | __field(unsigned long, secs) |
599 | __field(unsigned long, c_old) | |
600 | __field(unsigned long, c) | |
91afaf30 PM |
601 | ), |
602 | ||
603 | TP_fast_assign( | |
604 | __entry->rcutorturename = rcutorturename; | |
605 | __entry->rhp = rhp; | |
52494535 PM |
606 | __entry->secs = secs; |
607 | __entry->c_old = c_old; | |
608 | __entry->c = c; | |
91afaf30 PM |
609 | ), |
610 | ||
52494535 PM |
611 | TP_printk("%s torture read %p %luus c: %lu %lu", |
612 | __entry->rcutorturename, __entry->rhp, | |
613 | __entry->secs, __entry->c_old, __entry->c) | |
91afaf30 PM |
614 | ); |
615 | ||
a83eff0a PM |
616 | /* |
617 | * Tracepoint for _rcu_barrier() execution. The string "s" describes | |
618 | * the _rcu_barrier phase: | |
619 | * "Begin": rcu_barrier_callback() started. | |
620 | * "Check": rcu_barrier_callback() checking for piggybacking. | |
621 | * "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit. | |
622 | * "Inc1": rcu_barrier_callback() piggyback check counter incremented. | |
623 | * "Offline": rcu_barrier_callback() found offline CPU | |
3fbfbf7a | 624 | * "OnlineNoCB": rcu_barrier_callback() found online no-CBs CPU. |
a83eff0a PM |
625 | * "OnlineQ": rcu_barrier_callback() found online CPU with callbacks. |
626 | * "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks. | |
627 | * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. | |
628 | * "CB": An rcu_barrier_callback() invoked a callback, not the last. | |
629 | * "LastCB": An rcu_barrier_callback() invoked the last callback. | |
630 | * "Inc2": rcu_barrier_callback() piggyback check counter incremented. | |
631 | * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument | |
632 | * is the count of remaining callbacks, and "done" is the piggybacking count. | |
633 | */ | |
634 | TRACE_EVENT(rcu_barrier, | |
635 | ||
e66c33d5 | 636 | TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), |
a83eff0a PM |
637 | |
638 | TP_ARGS(rcuname, s, cpu, cnt, done), | |
639 | ||
640 | TP_STRUCT__entry( | |
e66c33d5 SRRH |
641 | __field(const char *, rcuname) |
642 | __field(const char *, s) | |
a83eff0a PM |
643 | __field(int, cpu) |
644 | __field(int, cnt) | |
645 | __field(unsigned long, done) | |
646 | ), | |
647 | ||
648 | TP_fast_assign( | |
649 | __entry->rcuname = rcuname; | |
650 | __entry->s = s; | |
651 | __entry->cpu = cpu; | |
652 | __entry->cnt = cnt; | |
653 | __entry->done = done; | |
654 | ), | |
655 | ||
656 | TP_printk("%s %s cpu %d remaining %d # %lu", | |
657 | __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, | |
658 | __entry->done) | |
659 | ); | |
660 | ||
d4c08f2a PM |
661 | #else /* #ifdef CONFIG_RCU_TRACE */ |
662 | ||
663 | #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) | |
486e2593 PM |
664 | #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ |
665 | qsmask) do { } while (0) | |
bd9f0686 PM |
666 | #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ |
667 | level, grplo, grphi, event) \ | |
668 | do { } while (0) | |
d4c08f2a PM |
669 | #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) |
670 | #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) | |
486e2593 PM |
671 | #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ |
672 | grplo, grphi, gp_tasks) do { } \ | |
673 | while (0) | |
d4c08f2a | 674 | #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) |
4145fa7f | 675 | #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) |
433cdddc | 676 | #define trace_rcu_prep_idle(reason) do { } while (0) |
486e2593 PM |
677 | #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) |
678 | #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ | |
679 | do { } while (0) | |
680 | #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ | |
681 | do { } while (0) | |
d4c08f2a PM |
682 | #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) |
683 | #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) | |
4968c300 PM |
684 | #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ |
685 | do { } while (0) | |
52494535 PM |
686 | #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ |
687 | do { } while (0) | |
a83eff0a | 688 | #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) |
d4c08f2a PM |
689 | |
690 | #endif /* #else #ifdef CONFIG_RCU_TRACE */ | |
691 | ||
29c00b4a PM |
692 | #endif /* _TRACE_RCU_H */ |
693 | ||
694 | /* This part must be outside protection */ | |
695 | #include <trace/define_trace.h> |