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 | ||
22 | TP_PROTO(char *s), | |
23 | ||
24 | TP_ARGS(s), | |
25 | ||
26 | TP_STRUCT__entry( | |
d4c08f2a | 27 | __field(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 | /* | |
42 | * Tracepoint for grace-period events: starting and ending a grace | |
43 | * period ("start" and "end", respectively), a CPU noting the start | |
44 | * of a new grace period or the end of an old grace period ("cpustart" | |
45 | * and "cpuend", respectively), a CPU passing through a quiescent | |
46 | * state ("cpuqs"), a CPU coming online or going offline ("cpuonl" | |
47 | * and "cpuofl", respectively), and a CPU being kicked for being too | |
48 | * long in dyntick-idle mode ("kick"). | |
49 | */ | |
50 | TRACE_EVENT(rcu_grace_period, | |
51 | ||
52 | TP_PROTO(char *rcuname, unsigned long gpnum, char *gpevent), | |
53 | ||
54 | TP_ARGS(rcuname, gpnum, gpevent), | |
55 | ||
56 | TP_STRUCT__entry( | |
57 | __field(char *, rcuname) | |
58 | __field(unsigned long, gpnum) | |
59 | __field(char *, gpevent) | |
60 | ), | |
61 | ||
62 | TP_fast_assign( | |
63 | __entry->rcuname = rcuname; | |
64 | __entry->gpnum = gpnum; | |
65 | __entry->gpevent = gpevent; | |
66 | ), | |
67 | ||
68 | TP_printk("%s %lu %s", | |
69 | __entry->rcuname, __entry->gpnum, __entry->gpevent) | |
70 | ); | |
71 | ||
72 | /* | |
73 | * Tracepoint for grace-period-initialization events. These are | |
74 | * distinguished by the type of RCU, the new grace-period number, the | |
75 | * rcu_node structure level, the starting and ending CPU covered by the | |
76 | * rcu_node structure, and the mask of CPUs that will be waited for. | |
77 | * All but the type of RCU are extracted from the rcu_node structure. | |
78 | */ | |
79 | TRACE_EVENT(rcu_grace_period_init, | |
80 | ||
81 | TP_PROTO(char *rcuname, unsigned long gpnum, u8 level, | |
82 | int grplo, int grphi, unsigned long qsmask), | |
83 | ||
84 | TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), | |
85 | ||
86 | TP_STRUCT__entry( | |
87 | __field(char *, rcuname) | |
88 | __field(unsigned long, gpnum) | |
89 | __field(u8, level) | |
90 | __field(int, grplo) | |
91 | __field(int, grphi) | |
92 | __field(unsigned long, qsmask) | |
93 | ), | |
94 | ||
95 | TP_fast_assign( | |
96 | __entry->rcuname = rcuname; | |
97 | __entry->gpnum = gpnum; | |
98 | __entry->level = level; | |
99 | __entry->grplo = grplo; | |
100 | __entry->grphi = grphi; | |
101 | __entry->qsmask = qsmask; | |
102 | ), | |
103 | ||
104 | TP_printk("%s %lu %u %d %d %lx", | |
105 | __entry->rcuname, __entry->gpnum, __entry->level, | |
106 | __entry->grplo, __entry->grphi, __entry->qsmask) | |
107 | ); | |
108 | ||
109 | /* | |
110 | * Tracepoint for tasks blocking within preemptible-RCU read-side | |
111 | * critical sections. Track the type of RCU (which one day might | |
112 | * include SRCU), the grace-period number that the task is blocking | |
113 | * (the current or the next), and the task's PID. | |
114 | */ | |
115 | TRACE_EVENT(rcu_preempt_task, | |
116 | ||
117 | TP_PROTO(char *rcuname, int pid, unsigned long gpnum), | |
118 | ||
119 | TP_ARGS(rcuname, pid, gpnum), | |
120 | ||
121 | TP_STRUCT__entry( | |
122 | __field(char *, rcuname) | |
123 | __field(unsigned long, gpnum) | |
124 | __field(int, pid) | |
125 | ), | |
126 | ||
127 | TP_fast_assign( | |
128 | __entry->rcuname = rcuname; | |
129 | __entry->gpnum = gpnum; | |
130 | __entry->pid = pid; | |
131 | ), | |
132 | ||
133 | TP_printk("%s %lu %d", | |
134 | __entry->rcuname, __entry->gpnum, __entry->pid) | |
135 | ); | |
136 | ||
137 | /* | |
138 | * Tracepoint for tasks that blocked within a given preemptible-RCU | |
139 | * read-side critical section exiting that critical section. Track the | |
140 | * type of RCU (which one day might include SRCU) and the task's PID. | |
141 | */ | |
142 | TRACE_EVENT(rcu_unlock_preempted_task, | |
143 | ||
144 | TP_PROTO(char *rcuname, unsigned long gpnum, int pid), | |
145 | ||
146 | TP_ARGS(rcuname, gpnum, pid), | |
147 | ||
148 | TP_STRUCT__entry( | |
149 | __field(char *, rcuname) | |
150 | __field(unsigned long, gpnum) | |
151 | __field(int, pid) | |
152 | ), | |
153 | ||
154 | TP_fast_assign( | |
155 | __entry->rcuname = rcuname; | |
156 | __entry->gpnum = gpnum; | |
157 | __entry->pid = pid; | |
158 | ), | |
159 | ||
160 | TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) | |
161 | ); | |
162 | ||
163 | /* | |
164 | * Tracepoint for quiescent-state-reporting events. These are | |
165 | * distinguished by the type of RCU, the grace-period number, the | |
166 | * mask of quiescent lower-level entities, the rcu_node structure level, | |
167 | * the starting and ending CPU covered by the rcu_node structure, and | |
168 | * whether there are any blocked tasks blocking the current grace period. | |
169 | * All but the type of RCU are extracted from the rcu_node structure. | |
170 | */ | |
171 | TRACE_EVENT(rcu_quiescent_state_report, | |
172 | ||
173 | TP_PROTO(char *rcuname, unsigned long gpnum, | |
174 | unsigned long mask, unsigned long qsmask, | |
175 | u8 level, int grplo, int grphi, int gp_tasks), | |
176 | ||
177 | TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), | |
178 | ||
179 | TP_STRUCT__entry( | |
180 | __field(char *, rcuname) | |
181 | __field(unsigned long, gpnum) | |
182 | __field(unsigned long, mask) | |
183 | __field(unsigned long, qsmask) | |
184 | __field(u8, level) | |
185 | __field(int, grplo) | |
186 | __field(int, grphi) | |
187 | __field(u8, gp_tasks) | |
188 | ), | |
189 | ||
190 | TP_fast_assign( | |
191 | __entry->rcuname = rcuname; | |
192 | __entry->gpnum = gpnum; | |
193 | __entry->mask = mask; | |
194 | __entry->qsmask = qsmask; | |
195 | __entry->level = level; | |
196 | __entry->grplo = grplo; | |
197 | __entry->grphi = grphi; | |
198 | __entry->gp_tasks = gp_tasks; | |
199 | ), | |
200 | ||
201 | TP_printk("%s %lu %lx>%lx %u %d %d %u", | |
202 | __entry->rcuname, __entry->gpnum, | |
203 | __entry->mask, __entry->qsmask, __entry->level, | |
204 | __entry->grplo, __entry->grphi, __entry->gp_tasks) | |
205 | ); | |
206 | ||
207 | /* | |
208 | * Tracepoint for quiescent states detected by force_quiescent_state(). | |
209 | * These trace events include the type of RCU, the grace-period number | |
210 | * that was blocked by the CPU, the CPU itself, and the type of quiescent | |
211 | * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, | |
212 | * or "kick" when kicking a CPU that has been in dyntick-idle mode for | |
213 | * too long. | |
214 | */ | |
215 | TRACE_EVENT(rcu_fqs, | |
216 | ||
217 | TP_PROTO(char *rcuname, unsigned long gpnum, int cpu, char *qsevent), | |
218 | ||
219 | TP_ARGS(rcuname, gpnum, cpu, qsevent), | |
220 | ||
221 | TP_STRUCT__entry( | |
222 | __field(char *, rcuname) | |
223 | __field(unsigned long, gpnum) | |
224 | __field(int, cpu) | |
225 | __field(char *, qsevent) | |
226 | ), | |
227 | ||
228 | TP_fast_assign( | |
229 | __entry->rcuname = rcuname; | |
230 | __entry->gpnum = gpnum; | |
231 | __entry->cpu = cpu; | |
232 | __entry->qsevent = qsevent; | |
233 | ), | |
234 | ||
235 | TP_printk("%s %lu %d %s", | |
236 | __entry->rcuname, __entry->gpnum, | |
237 | __entry->cpu, __entry->qsevent) | |
238 | ); | |
239 | ||
240 | #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) */ | |
241 | ||
242 | /* | |
243 | * Tracepoint for dyntick-idle entry/exit events. These take a string | |
045fb931 PM |
244 | * as argument: "Start" for entering dyntick-idle mode, "End" for |
245 | * leaving it, "--=" for events moving towards idle, and "++=" for events | |
246 | * moving away from idle. "Error on entry: not idle task" and "Error on | |
247 | * exit: not idle task" indicate that a non-idle task is erroneously | |
248 | * toying with the idle loop. | |
249 | * | |
250 | * These events also take a pair of numbers, which indicate the nesting | |
251 | * depth before and after the event of interest. Note that task-related | |
252 | * events use the upper bits of each number, while interrupt-related | |
253 | * events use the lower bits. | |
d4c08f2a PM |
254 | */ |
255 | TRACE_EVENT(rcu_dyntick, | |
256 | ||
4145fa7f | 257 | TP_PROTO(char *polarity, long long oldnesting, long long newnesting), |
d4c08f2a | 258 | |
4145fa7f | 259 | TP_ARGS(polarity, oldnesting, newnesting), |
d4c08f2a PM |
260 | |
261 | TP_STRUCT__entry( | |
262 | __field(char *, polarity) | |
4145fa7f PM |
263 | __field(long long, oldnesting) |
264 | __field(long long, newnesting) | |
d4c08f2a PM |
265 | ), |
266 | ||
267 | TP_fast_assign( | |
268 | __entry->polarity = polarity; | |
4145fa7f PM |
269 | __entry->oldnesting = oldnesting; |
270 | __entry->newnesting = newnesting; | |
d4c08f2a PM |
271 | ), |
272 | ||
4145fa7f PM |
273 | TP_printk("%s %llx %llx", __entry->polarity, |
274 | __entry->oldnesting, __entry->newnesting) | |
d4c08f2a PM |
275 | ); |
276 | ||
433cdddc PM |
277 | /* |
278 | * Tracepoint for RCU preparation for idle, the goal being to get RCU | |
279 | * processing done so that the current CPU can shut off its scheduling | |
280 | * clock and enter dyntick-idle mode. One way to accomplish this is | |
281 | * to drain all RCU callbacks from this CPU, and the other is to have | |
282 | * done everything RCU requires for the current grace period. In this | |
283 | * latter case, the CPU will be awakened at the end of the current grace | |
284 | * period in order to process the remainder of its callbacks. | |
285 | * | |
286 | * These tracepoints take a string as argument: | |
287 | * | |
288 | * "No callbacks": Nothing to do, no callbacks on this CPU. | |
289 | * "In holdoff": Nothing to do, holding off after unsuccessful attempt. | |
433cdddc | 290 | * "Begin holdoff": Attempt failed, don't retry until next jiffy. |
7cb92499 | 291 | * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. |
fd4b3526 | 292 | * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. |
433cdddc PM |
293 | * "More callbacks": Still more callbacks, try again to clear them out. |
294 | * "Callbacks drained": All callbacks processed, off to dyntick idle! | |
7cb92499 | 295 | * "Timer": Timer fired to cause CPU to continue processing callbacks. |
21e52e15 | 296 | * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. |
2fdbb31b | 297 | * "Cleanup after idle": Idle exited, timer canceled. |
433cdddc PM |
298 | */ |
299 | TRACE_EVENT(rcu_prep_idle, | |
300 | ||
301 | TP_PROTO(char *reason), | |
302 | ||
303 | TP_ARGS(reason), | |
304 | ||
305 | TP_STRUCT__entry( | |
306 | __field(char *, reason) | |
307 | ), | |
308 | ||
309 | TP_fast_assign( | |
310 | __entry->reason = reason; | |
311 | ), | |
312 | ||
313 | TP_printk("%s", __entry->reason) | |
314 | ); | |
315 | ||
d4c08f2a PM |
316 | /* |
317 | * Tracepoint for the registration of a single RCU callback function. | |
318 | * The first argument is the type of RCU, the second argument is | |
486e2593 PM |
319 | * a pointer to the RCU callback itself, the third element is the |
320 | * number of lazy callbacks queued, and the fourth element is the | |
321 | * total number of callbacks queued. | |
d4c08f2a PM |
322 | */ |
323 | TRACE_EVENT(rcu_callback, | |
324 | ||
486e2593 PM |
325 | TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen_lazy, |
326 | long qlen), | |
d4c08f2a | 327 | |
486e2593 | 328 | TP_ARGS(rcuname, rhp, qlen_lazy, qlen), |
d4c08f2a PM |
329 | |
330 | TP_STRUCT__entry( | |
331 | __field(char *, rcuname) | |
332 | __field(void *, rhp) | |
333 | __field(void *, func) | |
486e2593 | 334 | __field(long, qlen_lazy) |
d4c08f2a PM |
335 | __field(long, qlen) |
336 | ), | |
337 | ||
338 | TP_fast_assign( | |
339 | __entry->rcuname = rcuname; | |
340 | __entry->rhp = rhp; | |
341 | __entry->func = rhp->func; | |
486e2593 | 342 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
343 | __entry->qlen = qlen; |
344 | ), | |
345 | ||
486e2593 PM |
346 | TP_printk("%s rhp=%p func=%pf %ld/%ld", |
347 | __entry->rcuname, __entry->rhp, __entry->func, | |
348 | __entry->qlen_lazy, __entry->qlen) | |
d4c08f2a PM |
349 | ); |
350 | ||
351 | /* | |
352 | * Tracepoint for the registration of a single RCU callback of the special | |
353 | * kfree() form. The first argument is the RCU type, the second argument | |
354 | * is a pointer to the RCU callback, the third argument is the offset | |
355 | * of the callback within the enclosing RCU-protected data structure, | |
486e2593 PM |
356 | * the fourth argument is the number of lazy callbacks queued, and the |
357 | * fifth argument is the total number of callbacks queued. | |
d4c08f2a PM |
358 | */ |
359 | TRACE_EVENT(rcu_kfree_callback, | |
360 | ||
361 | TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset, | |
486e2593 | 362 | long qlen_lazy, long qlen), |
d4c08f2a | 363 | |
486e2593 | 364 | TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), |
d4c08f2a PM |
365 | |
366 | TP_STRUCT__entry( | |
367 | __field(char *, rcuname) | |
368 | __field(void *, rhp) | |
369 | __field(unsigned long, offset) | |
486e2593 | 370 | __field(long, qlen_lazy) |
d4c08f2a PM |
371 | __field(long, qlen) |
372 | ), | |
373 | ||
374 | TP_fast_assign( | |
375 | __entry->rcuname = rcuname; | |
376 | __entry->rhp = rhp; | |
377 | __entry->offset = offset; | |
486e2593 | 378 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
379 | __entry->qlen = qlen; |
380 | ), | |
381 | ||
486e2593 | 382 | TP_printk("%s rhp=%p func=%ld %ld/%ld", |
d4c08f2a | 383 | __entry->rcuname, __entry->rhp, __entry->offset, |
486e2593 | 384 | __entry->qlen_lazy, __entry->qlen) |
d4c08f2a PM |
385 | ); |
386 | ||
300df91c PM |
387 | /* |
388 | * Tracepoint for marking the beginning rcu_do_batch, performed to start | |
72fe701b | 389 | * RCU callback invocation. The first argument is the RCU flavor, |
486e2593 PM |
390 | * the second is the number of lazy callbacks queued, the third is |
391 | * the total number of callbacks queued, and the fourth argument is | |
392 | * the current RCU-callback batch limit. | |
29c00b4a PM |
393 | */ |
394 | TRACE_EVENT(rcu_batch_start, | |
395 | ||
486e2593 | 396 | TP_PROTO(char *rcuname, long qlen_lazy, long qlen, int blimit), |
29c00b4a | 397 | |
486e2593 | 398 | TP_ARGS(rcuname, qlen_lazy, qlen, blimit), |
29c00b4a PM |
399 | |
400 | TP_STRUCT__entry( | |
72fe701b | 401 | __field(char *, rcuname) |
486e2593 | 402 | __field(long, qlen_lazy) |
300df91c PM |
403 | __field(long, qlen) |
404 | __field(int, blimit) | |
29c00b4a PM |
405 | ), |
406 | ||
407 | TP_fast_assign( | |
72fe701b | 408 | __entry->rcuname = rcuname; |
486e2593 | 409 | __entry->qlen_lazy = qlen_lazy; |
300df91c PM |
410 | __entry->qlen = qlen; |
411 | __entry->blimit = blimit; | |
29c00b4a PM |
412 | ), |
413 | ||
486e2593 PM |
414 | TP_printk("%s CBs=%ld/%ld bl=%d", |
415 | __entry->rcuname, __entry->qlen_lazy, __entry->qlen, | |
416 | __entry->blimit) | |
29c00b4a PM |
417 | ); |
418 | ||
419 | /* | |
300df91c | 420 | * Tracepoint for the invocation of a single RCU callback function. |
d4c08f2a PM |
421 | * The first argument is the type of RCU, and the second argument is |
422 | * a pointer to the RCU callback itself. | |
29c00b4a PM |
423 | */ |
424 | TRACE_EVENT(rcu_invoke_callback, | |
425 | ||
d4c08f2a | 426 | TP_PROTO(char *rcuname, struct rcu_head *rhp), |
29c00b4a | 427 | |
d4c08f2a | 428 | TP_ARGS(rcuname, rhp), |
29c00b4a PM |
429 | |
430 | TP_STRUCT__entry( | |
d4c08f2a PM |
431 | __field(char *, rcuname) |
432 | __field(void *, rhp) | |
433 | __field(void *, func) | |
29c00b4a PM |
434 | ), |
435 | ||
436 | TP_fast_assign( | |
d4c08f2a | 437 | __entry->rcuname = rcuname; |
300df91c PM |
438 | __entry->rhp = rhp; |
439 | __entry->func = rhp->func; | |
29c00b4a PM |
440 | ), |
441 | ||
d4c08f2a PM |
442 | TP_printk("%s rhp=%p func=%pf", |
443 | __entry->rcuname, __entry->rhp, __entry->func) | |
29c00b4a PM |
444 | ); |
445 | ||
446 | /* | |
300df91c | 447 | * Tracepoint for the invocation of a single RCU callback of the special |
d4c08f2a PM |
448 | * kfree() form. The first argument is the RCU flavor, the second |
449 | * argument is a pointer to the RCU callback, and the third argument | |
450 | * is the offset of the callback within the enclosing RCU-protected | |
451 | * data structure. | |
29c00b4a PM |
452 | */ |
453 | TRACE_EVENT(rcu_invoke_kfree_callback, | |
454 | ||
d4c08f2a | 455 | TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset), |
29c00b4a | 456 | |
d4c08f2a | 457 | TP_ARGS(rcuname, rhp, offset), |
29c00b4a PM |
458 | |
459 | TP_STRUCT__entry( | |
d4c08f2a PM |
460 | __field(char *, rcuname) |
461 | __field(void *, rhp) | |
300df91c | 462 | __field(unsigned long, offset) |
29c00b4a PM |
463 | ), |
464 | ||
465 | TP_fast_assign( | |
d4c08f2a | 466 | __entry->rcuname = rcuname; |
300df91c | 467 | __entry->rhp = rhp; |
29c00b4a PM |
468 | __entry->offset = offset; |
469 | ), | |
470 | ||
d4c08f2a PM |
471 | TP_printk("%s rhp=%p func=%ld", |
472 | __entry->rcuname, __entry->rhp, __entry->offset) | |
29c00b4a PM |
473 | ); |
474 | ||
475 | /* | |
300df91c | 476 | * Tracepoint for exiting rcu_do_batch after RCU callbacks have been |
4968c300 PM |
477 | * invoked. The first argument is the name of the RCU flavor, |
478 | * the second argument is number of callbacks actually invoked, | |
479 | * the third argument (cb) is whether or not any of the callbacks that | |
480 | * were ready to invoke at the beginning of this batch are still | |
481 | * queued, the fourth argument (nr) is the return value of need_resched(), | |
482 | * the fifth argument (iit) is 1 if the current task is the idle task, | |
483 | * and the sixth argument (risk) is the return value from | |
484 | * rcu_is_callbacks_kthread(). | |
29c00b4a PM |
485 | */ |
486 | TRACE_EVENT(rcu_batch_end, | |
487 | ||
4968c300 PM |
488 | TP_PROTO(char *rcuname, int callbacks_invoked, |
489 | bool cb, bool nr, bool iit, bool risk), | |
29c00b4a | 490 | |
4968c300 | 491 | TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), |
29c00b4a PM |
492 | |
493 | TP_STRUCT__entry( | |
72fe701b | 494 | __field(char *, rcuname) |
300df91c | 495 | __field(int, callbacks_invoked) |
4968c300 PM |
496 | __field(bool, cb) |
497 | __field(bool, nr) | |
498 | __field(bool, iit) | |
499 | __field(bool, risk) | |
29c00b4a PM |
500 | ), |
501 | ||
502 | TP_fast_assign( | |
72fe701b | 503 | __entry->rcuname = rcuname; |
300df91c | 504 | __entry->callbacks_invoked = callbacks_invoked; |
4968c300 PM |
505 | __entry->cb = cb; |
506 | __entry->nr = nr; | |
507 | __entry->iit = iit; | |
508 | __entry->risk = risk; | |
509 | ), | |
510 | ||
511 | TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", | |
512 | __entry->rcuname, __entry->callbacks_invoked, | |
513 | __entry->cb ? 'C' : '.', | |
514 | __entry->nr ? 'S' : '.', | |
515 | __entry->iit ? 'I' : '.', | |
516 | __entry->risk ? 'R' : '.') | |
29c00b4a PM |
517 | ); |
518 | ||
91afaf30 PM |
519 | /* |
520 | * Tracepoint for rcutorture readers. The first argument is the name | |
521 | * of the RCU flavor from rcutorture's viewpoint and the second argument | |
522 | * is the callback address. | |
523 | */ | |
524 | TRACE_EVENT(rcu_torture_read, | |
525 | ||
526 | TP_PROTO(char *rcutorturename, struct rcu_head *rhp), | |
527 | ||
528 | TP_ARGS(rcutorturename, rhp), | |
529 | ||
530 | TP_STRUCT__entry( | |
531 | __field(char *, rcutorturename) | |
532 | __field(struct rcu_head *, rhp) | |
533 | ), | |
534 | ||
535 | TP_fast_assign( | |
536 | __entry->rcutorturename = rcutorturename; | |
537 | __entry->rhp = rhp; | |
538 | ), | |
539 | ||
540 | TP_printk("%s torture read %p", | |
541 | __entry->rcutorturename, __entry->rhp) | |
542 | ); | |
543 | ||
a83eff0a PM |
544 | /* |
545 | * Tracepoint for _rcu_barrier() execution. The string "s" describes | |
546 | * the _rcu_barrier phase: | |
547 | * "Begin": rcu_barrier_callback() started. | |
548 | * "Check": rcu_barrier_callback() checking for piggybacking. | |
549 | * "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit. | |
550 | * "Inc1": rcu_barrier_callback() piggyback check counter incremented. | |
551 | * "Offline": rcu_barrier_callback() found offline CPU | |
552 | * "OnlineQ": rcu_barrier_callback() found online CPU with callbacks. | |
553 | * "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks. | |
554 | * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. | |
555 | * "CB": An rcu_barrier_callback() invoked a callback, not the last. | |
556 | * "LastCB": An rcu_barrier_callback() invoked the last callback. | |
557 | * "Inc2": rcu_barrier_callback() piggyback check counter incremented. | |
558 | * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument | |
559 | * is the count of remaining callbacks, and "done" is the piggybacking count. | |
560 | */ | |
561 | TRACE_EVENT(rcu_barrier, | |
562 | ||
563 | TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done), | |
564 | ||
565 | TP_ARGS(rcuname, s, cpu, cnt, done), | |
566 | ||
567 | TP_STRUCT__entry( | |
568 | __field(char *, rcuname) | |
569 | __field(char *, s) | |
570 | __field(int, cpu) | |
571 | __field(int, cnt) | |
572 | __field(unsigned long, done) | |
573 | ), | |
574 | ||
575 | TP_fast_assign( | |
576 | __entry->rcuname = rcuname; | |
577 | __entry->s = s; | |
578 | __entry->cpu = cpu; | |
579 | __entry->cnt = cnt; | |
580 | __entry->done = done; | |
581 | ), | |
582 | ||
583 | TP_printk("%s %s cpu %d remaining %d # %lu", | |
584 | __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, | |
585 | __entry->done) | |
586 | ); | |
587 | ||
d4c08f2a PM |
588 | #else /* #ifdef CONFIG_RCU_TRACE */ |
589 | ||
590 | #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) | |
486e2593 PM |
591 | #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ |
592 | qsmask) do { } while (0) | |
d4c08f2a PM |
593 | #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) |
594 | #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) | |
486e2593 PM |
595 | #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ |
596 | grplo, grphi, gp_tasks) do { } \ | |
597 | while (0) | |
d4c08f2a | 598 | #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) |
4145fa7f | 599 | #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) |
433cdddc | 600 | #define trace_rcu_prep_idle(reason) do { } while (0) |
486e2593 PM |
601 | #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) |
602 | #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ | |
603 | do { } while (0) | |
604 | #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ | |
605 | do { } while (0) | |
d4c08f2a PM |
606 | #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) |
607 | #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) | |
4968c300 PM |
608 | #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ |
609 | do { } while (0) | |
91afaf30 | 610 | #define trace_rcu_torture_read(rcutorturename, rhp) do { } while (0) |
a83eff0a | 611 | #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) |
d4c08f2a PM |
612 | |
613 | #endif /* #else #ifdef CONFIG_RCU_TRACE */ | |
614 | ||
29c00b4a PM |
615 | #endif /* _TRACE_RCU_H */ |
616 | ||
617 | /* This part must be outside protection */ | |
618 | #include <trace/define_trace.h> |