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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
29c00b4a PM |
2 | #undef TRACE_SYSTEM |
3 | #define TRACE_SYSTEM rcu | |
4 | ||
5 | #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ) | |
6 | #define _TRACE_RCU_H | |
7 | ||
8 | #include <linux/tracepoint.h> | |
9 | ||
10 | /* | |
300df91c PM |
11 | * Tracepoint for start/end markers used for utilization calculations. |
12 | * By convention, the string is of the following forms: | |
13 | * | |
14 | * "Start <activity>" -- Mark the start of the specified activity, | |
15 | * such as "context switch". Nesting is permitted. | |
16 | * "End <activity>" -- Mark the end of the specified activity. | |
385680a9 PM |
17 | * |
18 | * An "@" character within "<activity>" is a comment character: Data | |
19 | * reduction scripts will ignore the "@" and the remainder of the line. | |
300df91c PM |
20 | */ |
21 | TRACE_EVENT(rcu_utilization, | |
22 | ||
e66c33d5 | 23 | TP_PROTO(const char *s), |
300df91c PM |
24 | |
25 | TP_ARGS(s), | |
26 | ||
27 | TP_STRUCT__entry( | |
e66c33d5 | 28 | __field(const char *, s) |
300df91c PM |
29 | ), |
30 | ||
31 | TP_fast_assign( | |
32 | __entry->s = s; | |
33 | ), | |
34 | ||
35 | TP_printk("%s", __entry->s) | |
36 | ); | |
37 | ||
d4c08f2a PM |
38 | #ifdef CONFIG_RCU_TRACE |
39 | ||
28f6569a | 40 | #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) |
d4c08f2a PM |
41 | |
42 | /* | |
63c4db78 PM |
43 | * Tracepoint for grace-period events. Takes a string identifying the |
44 | * RCU flavor, the grace-period number, and a string identifying the | |
45 | * grace-period-related event as follows: | |
46 | * | |
47 | * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. | |
48 | * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. | |
bb311ecc | 49 | * "newreq": Request a new grace period. |
63c4db78 PM |
50 | * "start": Start a grace period. |
51 | * "cpustart": CPU first notices a grace-period start. | |
52 | * "cpuqs": CPU passes through a quiescent state. | |
53 | * "cpuonl": CPU comes online. | |
54 | * "cpuofl": CPU goes offline. | |
477351f7 | 55 | * "cpuofl-bgp": CPU goes offline while blocking a grace period. |
63c4db78 PM |
56 | * "reqwait": GP kthread sleeps waiting for grace-period request. |
57 | * "reqwaitsig": GP kthread awakened by signal from reqwait state. | |
58 | * "fqswait": GP kthread waiting until time to force quiescent states. | |
59 | * "fqsstart": GP kthread starts forcing quiescent states. | |
60 | * "fqsend": GP kthread done forcing quiescent states. | |
61 | * "fqswaitsig": GP kthread awakened by signal from fqswait state. | |
62 | * "end": End a grace period. | |
63 | * "cpuend": CPU first notices a grace-period end. | |
d4c08f2a PM |
64 | */ |
65 | TRACE_EVENT(rcu_grace_period, | |
66 | ||
477351f7 | 67 | TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent), |
d4c08f2a | 68 | |
477351f7 | 69 | TP_ARGS(rcuname, gp_seq, gpevent), |
d4c08f2a PM |
70 | |
71 | TP_STRUCT__entry( | |
e66c33d5 | 72 | __field(const char *, rcuname) |
477351f7 | 73 | __field(unsigned long, gp_seq) |
e66c33d5 | 74 | __field(const char *, gpevent) |
d4c08f2a PM |
75 | ), |
76 | ||
77 | TP_fast_assign( | |
78 | __entry->rcuname = rcuname; | |
477351f7 | 79 | __entry->gp_seq = gp_seq; |
d4c08f2a PM |
80 | __entry->gpevent = gpevent; |
81 | ), | |
82 | ||
83 | TP_printk("%s %lu %s", | |
477351f7 | 84 | __entry->rcuname, __entry->gp_seq, __entry->gpevent) |
d4c08f2a PM |
85 | ); |
86 | ||
09c7b890 | 87 | /* |
c21b8b3e PM |
88 | * Tracepoint for future grace-period events. The caller should pull |
89 | * the data from the rcu_node structure, other than rcuname, which comes | |
90 | * from the rcu_state structure, and event, which is one of the following: | |
09c7b890 | 91 | * |
c21b8b3e PM |
92 | * "Startleaf": Request a grace period based on leaf-node data. |
93 | * "Prestarted": Someone beat us to the request | |
09c7b890 PM |
94 | * "Startedleaf": Leaf-node start proved sufficient. |
95 | * "Startedleafroot": Leaf-node start proved sufficient after checking root. | |
96 | * "Startedroot": Requested a nocb grace period based on root-node data. | |
c21b8b3e | 97 | * "NoGPkthread": The RCU grace-period kthread has not yet started. |
09c7b890 PM |
98 | * "StartWait": Start waiting for the requested grace period. |
99 | * "ResumeWait": Resume waiting after signal. | |
100 | * "EndWait": Complete wait. | |
101 | * "Cleanup": Clean up rcu_node structure after previous GP. | |
c21b8b3e | 102 | * "CleanupMore": Clean up, and another GP is needed. |
09c7b890 | 103 | */ |
bd9f0686 | 104 | TRACE_EVENT(rcu_future_grace_period, |
09c7b890 | 105 | |
abd13fdd PM |
106 | TP_PROTO(const char *rcuname, unsigned long gp_seq, unsigned long c, |
107 | u8 level, int grplo, int grphi, const char *gpevent), | |
09c7b890 | 108 | |
abd13fdd | 109 | TP_ARGS(rcuname, gp_seq, c, level, grplo, grphi, gpevent), |
09c7b890 PM |
110 | |
111 | TP_STRUCT__entry( | |
e66c33d5 | 112 | __field(const char *, rcuname) |
abd13fdd | 113 | __field(unsigned long, gp_seq) |
09c7b890 PM |
114 | __field(unsigned long, c) |
115 | __field(u8, level) | |
116 | __field(int, grplo) | |
117 | __field(int, grphi) | |
e66c33d5 | 118 | __field(const char *, gpevent) |
09c7b890 PM |
119 | ), |
120 | ||
121 | TP_fast_assign( | |
122 | __entry->rcuname = rcuname; | |
abd13fdd | 123 | __entry->gp_seq = gp_seq; |
09c7b890 PM |
124 | __entry->c = c; |
125 | __entry->level = level; | |
126 | __entry->grplo = grplo; | |
127 | __entry->grphi = grphi; | |
128 | __entry->gpevent = gpevent; | |
129 | ), | |
130 | ||
abd13fdd PM |
131 | TP_printk("%s %lu %lu %u %d %d %s", |
132 | __entry->rcuname, __entry->gp_seq, __entry->c, __entry->level, | |
133 | __entry->grplo, __entry->grphi, __entry->gpevent) | |
09c7b890 PM |
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 | ||
e087816d PM |
173 | /* |
174 | * Tracepoint for expedited grace-period events. Takes a string identifying | |
175 | * the RCU flavor, the expedited grace-period sequence number, and a string | |
176 | * identifying the grace-period-related event as follows: | |
177 | * | |
178 | * "snap": Captured snapshot of expedited grace period sequence number. | |
179 | * "start": Started a real expedited grace period. | |
9a414201 PM |
180 | * "reset": Started resetting the tree |
181 | * "select": Started selecting the CPUs to wait on. | |
7f5d42d0 | 182 | * "selectofl": Selected CPU partially offline. |
9a414201 | 183 | * "startwait": Started waiting on selected CPUs. |
e087816d | 184 | * "end": Ended a real expedited grace period. |
f6a12f34 | 185 | * "endwake": Woke piggybackers up. |
e087816d PM |
186 | * "done": Someone else did the expedited grace period for us. |
187 | */ | |
188 | TRACE_EVENT(rcu_exp_grace_period, | |
189 | ||
190 | TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), | |
191 | ||
192 | TP_ARGS(rcuname, gpseq, gpevent), | |
193 | ||
194 | TP_STRUCT__entry( | |
195 | __field(const char *, rcuname) | |
196 | __field(unsigned long, gpseq) | |
197 | __field(const char *, gpevent) | |
198 | ), | |
199 | ||
200 | TP_fast_assign( | |
201 | __entry->rcuname = rcuname; | |
202 | __entry->gpseq = gpseq; | |
203 | __entry->gpevent = gpevent; | |
204 | ), | |
205 | ||
206 | TP_printk("%s %lu %s", | |
207 | __entry->rcuname, __entry->gpseq, __entry->gpevent) | |
208 | ); | |
209 | ||
210 | /* | |
211 | * Tracepoint for expedited grace-period funnel-locking events. Takes a | |
212 | * string identifying the RCU flavor, an integer identifying the rcu_node | |
213 | * combining-tree level, another pair of integers identifying the lowest- | |
214 | * and highest-numbered CPU associated with the current rcu_node structure, | |
215 | * and a string. identifying the grace-period-related event as follows: | |
216 | * | |
f6a12f34 PM |
217 | * "nxtlvl": Advance to next level of rcu_node funnel |
218 | * "wait": Wait for someone else to do expedited GP | |
e087816d PM |
219 | */ |
220 | TRACE_EVENT(rcu_exp_funnel_lock, | |
221 | ||
222 | TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, | |
223 | const char *gpevent), | |
224 | ||
225 | TP_ARGS(rcuname, level, grplo, grphi, gpevent), | |
226 | ||
227 | TP_STRUCT__entry( | |
228 | __field(const char *, rcuname) | |
229 | __field(u8, level) | |
230 | __field(int, grplo) | |
231 | __field(int, grphi) | |
232 | __field(const char *, gpevent) | |
233 | ), | |
234 | ||
235 | TP_fast_assign( | |
236 | __entry->rcuname = rcuname; | |
237 | __entry->level = level; | |
238 | __entry->grplo = grplo; | |
239 | __entry->grphi = grphi; | |
240 | __entry->gpevent = gpevent; | |
241 | ), | |
242 | ||
243 | TP_printk("%s %d %d %d %s", | |
244 | __entry->rcuname, __entry->level, __entry->grplo, | |
245 | __entry->grphi, __entry->gpevent) | |
246 | ); | |
247 | ||
9122caf9 | 248 | #ifdef CONFIG_RCU_NOCB_CPU |
9261dd0d PM |
249 | /* |
250 | * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended | |
251 | * to assist debugging of these handoffs. | |
252 | * | |
253 | * The first argument is the name of the RCU flavor, and the second is | |
254 | * the number of the offloaded CPU are extracted. The third and final | |
255 | * argument is a string as follows: | |
256 | * | |
257 | * "WakeEmpty": Wake rcuo kthread, first CB to empty list. | |
9fdd3bc9 | 258 | * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. |
9261dd0d | 259 | * "WakeOvf": Wake rcuo kthread, CB list is huge. |
9fdd3bc9 | 260 | * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. |
9261dd0d PM |
261 | * "WakeNot": Don't wake rcuo kthread. |
262 | * "WakeNotPoll": Don't wake rcuo kthread because it is polling. | |
9fdd3bc9 | 263 | * "DeferredWake": Carried out the "IsDeferred" wakeup. |
69a79bb1 PM |
264 | * "Poll": Start of new polling cycle for rcu_nocb_poll. |
265 | * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. | |
9261dd0d PM |
266 | * "WokeEmpty": rcuo kthread woke to find empty list. |
267 | * "WokeNonEmpty": rcuo kthread woke to find non-empty list. | |
69a79bb1 PM |
268 | * "WaitQueue": Enqueue partially done, timed wait for it to complete. |
269 | * "WokeQueue": Partial enqueue now complete. | |
9261dd0d PM |
270 | */ |
271 | TRACE_EVENT(rcu_nocb_wake, | |
272 | ||
273 | TP_PROTO(const char *rcuname, int cpu, const char *reason), | |
274 | ||
275 | TP_ARGS(rcuname, cpu, reason), | |
276 | ||
277 | TP_STRUCT__entry( | |
278 | __field(const char *, rcuname) | |
279 | __field(int, cpu) | |
280 | __field(const char *, reason) | |
281 | ), | |
282 | ||
283 | TP_fast_assign( | |
284 | __entry->rcuname = rcuname; | |
285 | __entry->cpu = cpu; | |
286 | __entry->reason = reason; | |
287 | ), | |
288 | ||
289 | TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) | |
290 | ); | |
9122caf9 | 291 | #endif |
9261dd0d | 292 | |
d4c08f2a PM |
293 | /* |
294 | * Tracepoint for tasks blocking within preemptible-RCU read-side | |
295 | * critical sections. Track the type of RCU (which one day might | |
296 | * include SRCU), the grace-period number that the task is blocking | |
297 | * (the current or the next), and the task's PID. | |
298 | */ | |
299 | TRACE_EVENT(rcu_preempt_task, | |
300 | ||
e66c33d5 | 301 | TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), |
d4c08f2a PM |
302 | |
303 | TP_ARGS(rcuname, pid, gpnum), | |
304 | ||
305 | TP_STRUCT__entry( | |
e66c33d5 | 306 | __field(const char *, rcuname) |
d4c08f2a PM |
307 | __field(unsigned long, gpnum) |
308 | __field(int, pid) | |
309 | ), | |
310 | ||
311 | TP_fast_assign( | |
312 | __entry->rcuname = rcuname; | |
313 | __entry->gpnum = gpnum; | |
314 | __entry->pid = pid; | |
315 | ), | |
316 | ||
317 | TP_printk("%s %lu %d", | |
318 | __entry->rcuname, __entry->gpnum, __entry->pid) | |
319 | ); | |
320 | ||
321 | /* | |
322 | * Tracepoint for tasks that blocked within a given preemptible-RCU | |
323 | * read-side critical section exiting that critical section. Track the | |
324 | * type of RCU (which one day might include SRCU) and the task's PID. | |
325 | */ | |
326 | TRACE_EVENT(rcu_unlock_preempted_task, | |
327 | ||
e66c33d5 | 328 | TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), |
d4c08f2a PM |
329 | |
330 | TP_ARGS(rcuname, gpnum, pid), | |
331 | ||
332 | TP_STRUCT__entry( | |
e66c33d5 | 333 | __field(const char *, rcuname) |
d4c08f2a PM |
334 | __field(unsigned long, gpnum) |
335 | __field(int, pid) | |
336 | ), | |
337 | ||
338 | TP_fast_assign( | |
339 | __entry->rcuname = rcuname; | |
340 | __entry->gpnum = gpnum; | |
341 | __entry->pid = pid; | |
342 | ), | |
343 | ||
344 | TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) | |
345 | ); | |
346 | ||
347 | /* | |
348 | * Tracepoint for quiescent-state-reporting events. These are | |
349 | * distinguished by the type of RCU, the grace-period number, the | |
350 | * mask of quiescent lower-level entities, the rcu_node structure level, | |
351 | * the starting and ending CPU covered by the rcu_node structure, and | |
352 | * whether there are any blocked tasks blocking the current grace period. | |
353 | * All but the type of RCU are extracted from the rcu_node structure. | |
354 | */ | |
355 | TRACE_EVENT(rcu_quiescent_state_report, | |
356 | ||
e66c33d5 | 357 | TP_PROTO(const char *rcuname, unsigned long gpnum, |
d4c08f2a PM |
358 | unsigned long mask, unsigned long qsmask, |
359 | u8 level, int grplo, int grphi, int gp_tasks), | |
360 | ||
361 | TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), | |
362 | ||
363 | TP_STRUCT__entry( | |
e66c33d5 | 364 | __field(const char *, rcuname) |
d4c08f2a PM |
365 | __field(unsigned long, gpnum) |
366 | __field(unsigned long, mask) | |
367 | __field(unsigned long, qsmask) | |
368 | __field(u8, level) | |
369 | __field(int, grplo) | |
370 | __field(int, grphi) | |
371 | __field(u8, gp_tasks) | |
372 | ), | |
373 | ||
374 | TP_fast_assign( | |
375 | __entry->rcuname = rcuname; | |
376 | __entry->gpnum = gpnum; | |
377 | __entry->mask = mask; | |
378 | __entry->qsmask = qsmask; | |
379 | __entry->level = level; | |
380 | __entry->grplo = grplo; | |
381 | __entry->grphi = grphi; | |
382 | __entry->gp_tasks = gp_tasks; | |
383 | ), | |
384 | ||
385 | TP_printk("%s %lu %lx>%lx %u %d %d %u", | |
386 | __entry->rcuname, __entry->gpnum, | |
387 | __entry->mask, __entry->qsmask, __entry->level, | |
388 | __entry->grplo, __entry->grphi, __entry->gp_tasks) | |
389 | ); | |
390 | ||
391 | /* | |
392 | * Tracepoint for quiescent states detected by force_quiescent_state(). | |
3a19b46a PM |
393 | * These trace events include the type of RCU, the grace-period number that |
394 | * was blocked by the CPU, the CPU itself, and the type of quiescent state, | |
395 | * which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, "kick" | |
396 | * when kicking a CPU that has been in dyntick-idle mode for too long, or | |
397 | * "rqc" if the CPU got a quiescent state via its rcu_qs_ctr. | |
d4c08f2a PM |
398 | */ |
399 | TRACE_EVENT(rcu_fqs, | |
400 | ||
e66c33d5 | 401 | TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), |
d4c08f2a PM |
402 | |
403 | TP_ARGS(rcuname, gpnum, cpu, qsevent), | |
404 | ||
405 | TP_STRUCT__entry( | |
e66c33d5 | 406 | __field(const char *, rcuname) |
d4c08f2a PM |
407 | __field(unsigned long, gpnum) |
408 | __field(int, cpu) | |
e66c33d5 | 409 | __field(const char *, qsevent) |
d4c08f2a PM |
410 | ), |
411 | ||
412 | TP_fast_assign( | |
413 | __entry->rcuname = rcuname; | |
414 | __entry->gpnum = gpnum; | |
415 | __entry->cpu = cpu; | |
416 | __entry->qsevent = qsevent; | |
417 | ), | |
418 | ||
419 | TP_printk("%s %lu %d %s", | |
420 | __entry->rcuname, __entry->gpnum, | |
421 | __entry->cpu, __entry->qsevent) | |
422 | ); | |
423 | ||
28f6569a | 424 | #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ |
d4c08f2a PM |
425 | |
426 | /* | |
427 | * Tracepoint for dyntick-idle entry/exit events. These take a string | |
bd2b879a PM |
428 | * as argument: "Start" for entering dyntick-idle mode, "Startirq" for |
429 | * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it | |
430 | * to irq/NMI, "--=" for events moving towards idle, and "++=" for events | |
e68bbb26 | 431 | * moving away from idle. |
045fb931 PM |
432 | * |
433 | * These events also take a pair of numbers, which indicate the nesting | |
e68bbb26 PM |
434 | * depth before and after the event of interest, and a third number that is |
435 | * the ->dynticks counter. Note that task-related and interrupt-related | |
436 | * events use two separate counters, and that the "++=" and "--=" events | |
437 | * for irq/NMI will change the counter by two, otherwise by one. | |
d4c08f2a PM |
438 | */ |
439 | TRACE_EVENT(rcu_dyntick, | |
440 | ||
dec98900 | 441 | TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks), |
d4c08f2a | 442 | |
dec98900 | 443 | TP_ARGS(polarity, oldnesting, newnesting, dynticks), |
d4c08f2a PM |
444 | |
445 | TP_STRUCT__entry( | |
e66c33d5 | 446 | __field(const char *, polarity) |
84585aa8 PM |
447 | __field(long, oldnesting) |
448 | __field(long, newnesting) | |
dec98900 | 449 | __field(int, dynticks) |
d4c08f2a PM |
450 | ), |
451 | ||
452 | TP_fast_assign( | |
453 | __entry->polarity = polarity; | |
4145fa7f PM |
454 | __entry->oldnesting = oldnesting; |
455 | __entry->newnesting = newnesting; | |
dec98900 | 456 | __entry->dynticks = atomic_read(&dynticks); |
d4c08f2a PM |
457 | ), |
458 | ||
dec98900 PM |
459 | TP_printk("%s %lx %lx %#3x", __entry->polarity, |
460 | __entry->oldnesting, __entry->newnesting, | |
461 | __entry->dynticks & 0xfff) | |
433cdddc PM |
462 | ); |
463 | ||
d4c08f2a PM |
464 | /* |
465 | * Tracepoint for the registration of a single RCU callback function. | |
466 | * The first argument is the type of RCU, the second argument is | |
486e2593 PM |
467 | * a pointer to the RCU callback itself, the third element is the |
468 | * number of lazy callbacks queued, and the fourth element is the | |
469 | * total number of callbacks queued. | |
d4c08f2a PM |
470 | */ |
471 | TRACE_EVENT(rcu_callback, | |
472 | ||
e66c33d5 | 473 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, |
486e2593 | 474 | long qlen), |
d4c08f2a | 475 | |
486e2593 | 476 | TP_ARGS(rcuname, rhp, qlen_lazy, qlen), |
d4c08f2a PM |
477 | |
478 | TP_STRUCT__entry( | |
e66c33d5 | 479 | __field(const char *, rcuname) |
d4c08f2a PM |
480 | __field(void *, rhp) |
481 | __field(void *, func) | |
486e2593 | 482 | __field(long, qlen_lazy) |
d4c08f2a PM |
483 | __field(long, qlen) |
484 | ), | |
485 | ||
486 | TP_fast_assign( | |
487 | __entry->rcuname = rcuname; | |
488 | __entry->rhp = rhp; | |
489 | __entry->func = rhp->func; | |
486e2593 | 490 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
491 | __entry->qlen = qlen; |
492 | ), | |
493 | ||
486e2593 PM |
494 | TP_printk("%s rhp=%p func=%pf %ld/%ld", |
495 | __entry->rcuname, __entry->rhp, __entry->func, | |
496 | __entry->qlen_lazy, __entry->qlen) | |
d4c08f2a PM |
497 | ); |
498 | ||
499 | /* | |
500 | * Tracepoint for the registration of a single RCU callback of the special | |
501 | * kfree() form. The first argument is the RCU type, the second argument | |
502 | * is a pointer to the RCU callback, the third argument is the offset | |
503 | * of the callback within the enclosing RCU-protected data structure, | |
486e2593 PM |
504 | * the fourth argument is the number of lazy callbacks queued, and the |
505 | * fifth argument is the total number of callbacks queued. | |
d4c08f2a PM |
506 | */ |
507 | TRACE_EVENT(rcu_kfree_callback, | |
508 | ||
e66c33d5 | 509 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, |
486e2593 | 510 | long qlen_lazy, long qlen), |
d4c08f2a | 511 | |
486e2593 | 512 | TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), |
d4c08f2a PM |
513 | |
514 | TP_STRUCT__entry( | |
e66c33d5 | 515 | __field(const char *, rcuname) |
d4c08f2a PM |
516 | __field(void *, rhp) |
517 | __field(unsigned long, offset) | |
486e2593 | 518 | __field(long, qlen_lazy) |
d4c08f2a PM |
519 | __field(long, qlen) |
520 | ), | |
521 | ||
522 | TP_fast_assign( | |
523 | __entry->rcuname = rcuname; | |
524 | __entry->rhp = rhp; | |
525 | __entry->offset = offset; | |
486e2593 | 526 | __entry->qlen_lazy = qlen_lazy; |
d4c08f2a PM |
527 | __entry->qlen = qlen; |
528 | ), | |
529 | ||
486e2593 | 530 | TP_printk("%s rhp=%p func=%ld %ld/%ld", |
d4c08f2a | 531 | __entry->rcuname, __entry->rhp, __entry->offset, |
486e2593 | 532 | __entry->qlen_lazy, __entry->qlen) |
d4c08f2a PM |
533 | ); |
534 | ||
300df91c PM |
535 | /* |
536 | * Tracepoint for marking the beginning rcu_do_batch, performed to start | |
72fe701b | 537 | * RCU callback invocation. The first argument is the RCU flavor, |
486e2593 PM |
538 | * the second is the number of lazy callbacks queued, the third is |
539 | * the total number of callbacks queued, and the fourth argument is | |
540 | * the current RCU-callback batch limit. | |
29c00b4a PM |
541 | */ |
542 | TRACE_EVENT(rcu_batch_start, | |
543 | ||
e66c33d5 | 544 | TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), |
29c00b4a | 545 | |
486e2593 | 546 | TP_ARGS(rcuname, qlen_lazy, qlen, blimit), |
29c00b4a PM |
547 | |
548 | TP_STRUCT__entry( | |
e66c33d5 | 549 | __field(const char *, rcuname) |
486e2593 | 550 | __field(long, qlen_lazy) |
300df91c | 551 | __field(long, qlen) |
3aac7a8d | 552 | __field(long, blimit) |
29c00b4a PM |
553 | ), |
554 | ||
555 | TP_fast_assign( | |
72fe701b | 556 | __entry->rcuname = rcuname; |
486e2593 | 557 | __entry->qlen_lazy = qlen_lazy; |
300df91c PM |
558 | __entry->qlen = qlen; |
559 | __entry->blimit = blimit; | |
29c00b4a PM |
560 | ), |
561 | ||
3aac7a8d | 562 | TP_printk("%s CBs=%ld/%ld bl=%ld", |
486e2593 PM |
563 | __entry->rcuname, __entry->qlen_lazy, __entry->qlen, |
564 | __entry->blimit) | |
29c00b4a PM |
565 | ); |
566 | ||
567 | /* | |
300df91c | 568 | * Tracepoint for the invocation of a single RCU callback function. |
d4c08f2a PM |
569 | * The first argument is the type of RCU, and the second argument is |
570 | * a pointer to the RCU callback itself. | |
29c00b4a PM |
571 | */ |
572 | TRACE_EVENT(rcu_invoke_callback, | |
573 | ||
e66c33d5 | 574 | TP_PROTO(const char *rcuname, struct rcu_head *rhp), |
29c00b4a | 575 | |
d4c08f2a | 576 | TP_ARGS(rcuname, rhp), |
29c00b4a PM |
577 | |
578 | TP_STRUCT__entry( | |
e66c33d5 | 579 | __field(const char *, rcuname) |
d4c08f2a PM |
580 | __field(void *, rhp) |
581 | __field(void *, func) | |
29c00b4a PM |
582 | ), |
583 | ||
584 | TP_fast_assign( | |
d4c08f2a | 585 | __entry->rcuname = rcuname; |
300df91c PM |
586 | __entry->rhp = rhp; |
587 | __entry->func = rhp->func; | |
29c00b4a PM |
588 | ), |
589 | ||
d4c08f2a PM |
590 | TP_printk("%s rhp=%p func=%pf", |
591 | __entry->rcuname, __entry->rhp, __entry->func) | |
29c00b4a PM |
592 | ); |
593 | ||
594 | /* | |
300df91c | 595 | * Tracepoint for the invocation of a single RCU callback of the special |
d4c08f2a PM |
596 | * kfree() form. The first argument is the RCU flavor, the second |
597 | * argument is a pointer to the RCU callback, and the third argument | |
598 | * is the offset of the callback within the enclosing RCU-protected | |
599 | * data structure. | |
29c00b4a PM |
600 | */ |
601 | TRACE_EVENT(rcu_invoke_kfree_callback, | |
602 | ||
e66c33d5 | 603 | TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), |
29c00b4a | 604 | |
d4c08f2a | 605 | TP_ARGS(rcuname, rhp, offset), |
29c00b4a PM |
606 | |
607 | TP_STRUCT__entry( | |
e66c33d5 | 608 | __field(const char *, rcuname) |
d4c08f2a | 609 | __field(void *, rhp) |
300df91c | 610 | __field(unsigned long, offset) |
29c00b4a PM |
611 | ), |
612 | ||
613 | TP_fast_assign( | |
d4c08f2a | 614 | __entry->rcuname = rcuname; |
300df91c | 615 | __entry->rhp = rhp; |
29c00b4a PM |
616 | __entry->offset = offset; |
617 | ), | |
618 | ||
d4c08f2a PM |
619 | TP_printk("%s rhp=%p func=%ld", |
620 | __entry->rcuname, __entry->rhp, __entry->offset) | |
29c00b4a PM |
621 | ); |
622 | ||
623 | /* | |
300df91c | 624 | * Tracepoint for exiting rcu_do_batch after RCU callbacks have been |
4968c300 PM |
625 | * invoked. The first argument is the name of the RCU flavor, |
626 | * the second argument is number of callbacks actually invoked, | |
627 | * the third argument (cb) is whether or not any of the callbacks that | |
628 | * were ready to invoke at the beginning of this batch are still | |
629 | * queued, the fourth argument (nr) is the return value of need_resched(), | |
630 | * the fifth argument (iit) is 1 if the current task is the idle task, | |
631 | * and the sixth argument (risk) is the return value from | |
632 | * rcu_is_callbacks_kthread(). | |
29c00b4a PM |
633 | */ |
634 | TRACE_EVENT(rcu_batch_end, | |
635 | ||
e66c33d5 | 636 | TP_PROTO(const char *rcuname, int callbacks_invoked, |
15f5191b | 637 | char cb, char nr, char iit, char risk), |
29c00b4a | 638 | |
4968c300 | 639 | TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), |
29c00b4a PM |
640 | |
641 | TP_STRUCT__entry( | |
e66c33d5 | 642 | __field(const char *, rcuname) |
300df91c | 643 | __field(int, callbacks_invoked) |
15f5191b PM |
644 | __field(char, cb) |
645 | __field(char, nr) | |
646 | __field(char, iit) | |
647 | __field(char, risk) | |
29c00b4a PM |
648 | ), |
649 | ||
650 | TP_fast_assign( | |
72fe701b | 651 | __entry->rcuname = rcuname; |
300df91c | 652 | __entry->callbacks_invoked = callbacks_invoked; |
4968c300 PM |
653 | __entry->cb = cb; |
654 | __entry->nr = nr; | |
655 | __entry->iit = iit; | |
656 | __entry->risk = risk; | |
657 | ), | |
658 | ||
659 | TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", | |
660 | __entry->rcuname, __entry->callbacks_invoked, | |
661 | __entry->cb ? 'C' : '.', | |
662 | __entry->nr ? 'S' : '.', | |
663 | __entry->iit ? 'I' : '.', | |
664 | __entry->risk ? 'R' : '.') | |
29c00b4a PM |
665 | ); |
666 | ||
91afaf30 PM |
667 | /* |
668 | * Tracepoint for rcutorture readers. The first argument is the name | |
669 | * of the RCU flavor from rcutorture's viewpoint and the second argument | |
d0af39e8 PM |
670 | * is the callback address. The third argument is the start time in |
671 | * seconds, and the last two arguments are the grace period numbers | |
672 | * at the beginning and end of the read, respectively. Note that the | |
673 | * callback address can be NULL. | |
91afaf30 | 674 | */ |
b3c98314 | 675 | #define RCUTORTURENAME_LEN 8 |
91afaf30 PM |
676 | TRACE_EVENT(rcu_torture_read, |
677 | ||
e66c33d5 | 678 | TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, |
52494535 | 679 | unsigned long secs, unsigned long c_old, unsigned long c), |
91afaf30 | 680 | |
52494535 | 681 | TP_ARGS(rcutorturename, rhp, secs, c_old, c), |
91afaf30 PM |
682 | |
683 | TP_STRUCT__entry( | |
b3c98314 | 684 | __field(char, rcutorturename[RCUTORTURENAME_LEN]) |
91afaf30 | 685 | __field(struct rcu_head *, rhp) |
52494535 PM |
686 | __field(unsigned long, secs) |
687 | __field(unsigned long, c_old) | |
688 | __field(unsigned long, c) | |
91afaf30 PM |
689 | ), |
690 | ||
691 | TP_fast_assign( | |
b3c98314 PM |
692 | strncpy(__entry->rcutorturename, rcutorturename, |
693 | RCUTORTURENAME_LEN); | |
694 | __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0; | |
91afaf30 | 695 | __entry->rhp = rhp; |
52494535 PM |
696 | __entry->secs = secs; |
697 | __entry->c_old = c_old; | |
698 | __entry->c = c; | |
91afaf30 PM |
699 | ), |
700 | ||
52494535 PM |
701 | TP_printk("%s torture read %p %luus c: %lu %lu", |
702 | __entry->rcutorturename, __entry->rhp, | |
703 | __entry->secs, __entry->c_old, __entry->c) | |
91afaf30 PM |
704 | ); |
705 | ||
a83eff0a PM |
706 | /* |
707 | * Tracepoint for _rcu_barrier() execution. The string "s" describes | |
708 | * the _rcu_barrier phase: | |
d7e29933 | 709 | * "Begin": _rcu_barrier() started. |
d7e29933 PM |
710 | * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. |
711 | * "Inc1": _rcu_barrier() piggyback check counter incremented. | |
712 | * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU | |
713 | * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. | |
714 | * "OnlineQ": _rcu_barrier() found online CPU with callbacks. | |
715 | * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. | |
a83eff0a | 716 | * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. |
f92c734f | 717 | * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. |
a83eff0a PM |
718 | * "CB": An rcu_barrier_callback() invoked a callback, not the last. |
719 | * "LastCB": An rcu_barrier_callback() invoked the last callback. | |
d7e29933 | 720 | * "Inc2": _rcu_barrier() piggyback check counter incremented. |
a83eff0a PM |
721 | * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument |
722 | * is the count of remaining callbacks, and "done" is the piggybacking count. | |
723 | */ | |
724 | TRACE_EVENT(rcu_barrier, | |
725 | ||
e66c33d5 | 726 | TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), |
a83eff0a PM |
727 | |
728 | TP_ARGS(rcuname, s, cpu, cnt, done), | |
729 | ||
730 | TP_STRUCT__entry( | |
e66c33d5 SRRH |
731 | __field(const char *, rcuname) |
732 | __field(const char *, s) | |
a83eff0a PM |
733 | __field(int, cpu) |
734 | __field(int, cnt) | |
735 | __field(unsigned long, done) | |
736 | ), | |
737 | ||
738 | TP_fast_assign( | |
739 | __entry->rcuname = rcuname; | |
740 | __entry->s = s; | |
741 | __entry->cpu = cpu; | |
742 | __entry->cnt = cnt; | |
743 | __entry->done = done; | |
744 | ), | |
745 | ||
746 | TP_printk("%s %s cpu %d remaining %d # %lu", | |
747 | __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, | |
748 | __entry->done) | |
749 | ); | |
750 | ||
d4c08f2a PM |
751 | #else /* #ifdef CONFIG_RCU_TRACE */ |
752 | ||
477351f7 | 753 | #define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0) |
abd13fdd | 754 | #define trace_rcu_future_grace_period(rcuname, gp_seq, c, \ |
bd9f0686 PM |
755 | level, grplo, grphi, event) \ |
756 | do { } while (0) | |
e087816d PM |
757 | #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ |
758 | qsmask) do { } while (0) | |
759 | #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ | |
760 | do { } while (0) | |
761 | #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ | |
762 | do { } while (0) | |
9261dd0d | 763 | #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) |
d4c08f2a PM |
764 | #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) |
765 | #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) | |
486e2593 PM |
766 | #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ |
767 | grplo, grphi, gp_tasks) do { } \ | |
768 | while (0) | |
d4c08f2a | 769 | #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) |
dec98900 | 770 | #define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0) |
486e2593 PM |
771 | #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) |
772 | #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ | |
773 | do { } while (0) | |
774 | #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ | |
775 | do { } while (0) | |
d4c08f2a PM |
776 | #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) |
777 | #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) | |
4968c300 PM |
778 | #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ |
779 | do { } while (0) | |
52494535 PM |
780 | #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ |
781 | do { } while (0) | |
a83eff0a | 782 | #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) |
d4c08f2a PM |
783 | |
784 | #endif /* #else #ifdef CONFIG_RCU_TRACE */ | |
785 | ||
29c00b4a PM |
786 | #endif /* _TRACE_RCU_H */ |
787 | ||
788 | /* This part must be outside protection */ | |
789 | #include <trace/define_trace.h> |