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0db15b1e AH |
1 | /* |
2 | * db-export.c: Support for exporting data suitable for import to a database | |
3 | * Copyright (c) 2014, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <errno.h> | |
17 | ||
18 | #include "evsel.h" | |
19 | #include "machine.h" | |
20 | #include "thread.h" | |
21 | #include "comm.h" | |
22 | #include "symbol.h" | |
23 | #include "event.h" | |
758008b2 | 24 | #include "util.h" |
88f50d60 | 25 | #include "thread-stack.h" |
0db15b1e AH |
26 | #include "db-export.h" |
27 | ||
758008b2 AH |
28 | struct deferred_export { |
29 | struct list_head node; | |
30 | struct comm *comm; | |
31 | }; | |
32 | ||
33 | static int db_export__deferred(struct db_export *dbe) | |
34 | { | |
35 | struct deferred_export *de; | |
36 | int err; | |
37 | ||
38 | while (!list_empty(&dbe->deferred)) { | |
39 | de = list_entry(dbe->deferred.next, struct deferred_export, | |
40 | node); | |
41 | err = dbe->export_comm(dbe, de->comm); | |
42 | list_del(&de->node); | |
43 | free(de); | |
44 | if (err) | |
45 | return err; | |
46 | } | |
47 | ||
48 | return 0; | |
49 | } | |
50 | ||
51 | static void db_export__free_deferred(struct db_export *dbe) | |
52 | { | |
53 | struct deferred_export *de; | |
54 | ||
55 | while (!list_empty(&dbe->deferred)) { | |
56 | de = list_entry(dbe->deferred.next, struct deferred_export, | |
57 | node); | |
58 | list_del(&de->node); | |
59 | free(de); | |
60 | } | |
61 | } | |
62 | ||
63 | static int db_export__defer_comm(struct db_export *dbe, struct comm *comm) | |
64 | { | |
65 | struct deferred_export *de; | |
66 | ||
67 | de = zalloc(sizeof(struct deferred_export)); | |
68 | if (!de) | |
69 | return -ENOMEM; | |
70 | ||
71 | de->comm = comm; | |
72 | list_add_tail(&de->node, &dbe->deferred); | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
0db15b1e AH |
77 | int db_export__init(struct db_export *dbe) |
78 | { | |
79 | memset(dbe, 0, sizeof(struct db_export)); | |
758008b2 | 80 | INIT_LIST_HEAD(&dbe->deferred); |
0db15b1e AH |
81 | return 0; |
82 | } | |
83 | ||
758008b2 AH |
84 | int db_export__flush(struct db_export *dbe) |
85 | { | |
86 | return db_export__deferred(dbe); | |
87 | } | |
88 | ||
88f50d60 | 89 | void db_export__exit(struct db_export *dbe) |
0db15b1e | 90 | { |
758008b2 | 91 | db_export__free_deferred(dbe); |
88f50d60 AH |
92 | call_return_processor__free(dbe->crp); |
93 | dbe->crp = NULL; | |
0db15b1e AH |
94 | } |
95 | ||
96 | int db_export__evsel(struct db_export *dbe, struct perf_evsel *evsel) | |
97 | { | |
98 | if (evsel->db_id) | |
99 | return 0; | |
100 | ||
101 | evsel->db_id = ++dbe->evsel_last_db_id; | |
102 | ||
103 | if (dbe->export_evsel) | |
104 | return dbe->export_evsel(dbe, evsel); | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | int db_export__machine(struct db_export *dbe, struct machine *machine) | |
110 | { | |
111 | if (machine->db_id) | |
112 | return 0; | |
113 | ||
114 | machine->db_id = ++dbe->machine_last_db_id; | |
115 | ||
116 | if (dbe->export_machine) | |
117 | return dbe->export_machine(dbe, machine); | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | int db_export__thread(struct db_export *dbe, struct thread *thread, | |
123 | struct machine *machine, struct comm *comm) | |
124 | { | |
b91fc39f | 125 | struct thread *main_thread; |
0db15b1e AH |
126 | u64 main_thread_db_id = 0; |
127 | int err; | |
128 | ||
129 | if (thread->db_id) | |
130 | return 0; | |
131 | ||
132 | thread->db_id = ++dbe->thread_last_db_id; | |
133 | ||
134 | if (thread->pid_ != -1) { | |
0db15b1e AH |
135 | if (thread->pid_ == thread->tid) { |
136 | main_thread = thread; | |
137 | } else { | |
138 | main_thread = machine__findnew_thread(machine, | |
139 | thread->pid_, | |
140 | thread->pid_); | |
141 | if (!main_thread) | |
142 | return -ENOMEM; | |
143 | err = db_export__thread(dbe, main_thread, machine, | |
144 | comm); | |
145 | if (err) | |
b91fc39f | 146 | goto out_put; |
0db15b1e AH |
147 | if (comm) { |
148 | err = db_export__comm_thread(dbe, comm, thread); | |
149 | if (err) | |
b91fc39f | 150 | goto out_put; |
0db15b1e AH |
151 | } |
152 | } | |
153 | main_thread_db_id = main_thread->db_id; | |
b91fc39f ACM |
154 | if (main_thread != thread) |
155 | thread__put(main_thread); | |
0db15b1e AH |
156 | } |
157 | ||
158 | if (dbe->export_thread) | |
159 | return dbe->export_thread(dbe, thread, main_thread_db_id, | |
160 | machine); | |
161 | ||
162 | return 0; | |
b91fc39f ACM |
163 | |
164 | out_put: | |
165 | thread__put(main_thread); | |
166 | return err; | |
0db15b1e AH |
167 | } |
168 | ||
169 | int db_export__comm(struct db_export *dbe, struct comm *comm, | |
170 | struct thread *main_thread) | |
171 | { | |
172 | int err; | |
173 | ||
174 | if (comm->db_id) | |
175 | return 0; | |
176 | ||
177 | comm->db_id = ++dbe->comm_last_db_id; | |
178 | ||
179 | if (dbe->export_comm) { | |
758008b2 AH |
180 | if (main_thread->comm_set) |
181 | err = dbe->export_comm(dbe, comm); | |
182 | else | |
183 | err = db_export__defer_comm(dbe, comm); | |
0db15b1e AH |
184 | if (err) |
185 | return err; | |
186 | } | |
187 | ||
188 | return db_export__comm_thread(dbe, comm, main_thread); | |
189 | } | |
190 | ||
191 | int db_export__comm_thread(struct db_export *dbe, struct comm *comm, | |
192 | struct thread *thread) | |
193 | { | |
194 | u64 db_id; | |
195 | ||
196 | db_id = ++dbe->comm_thread_last_db_id; | |
197 | ||
198 | if (dbe->export_comm_thread) | |
199 | return dbe->export_comm_thread(dbe, db_id, comm, thread); | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | int db_export__dso(struct db_export *dbe, struct dso *dso, | |
205 | struct machine *machine) | |
206 | { | |
207 | if (dso->db_id) | |
208 | return 0; | |
209 | ||
210 | dso->db_id = ++dbe->dso_last_db_id; | |
211 | ||
212 | if (dbe->export_dso) | |
213 | return dbe->export_dso(dbe, dso, machine); | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | int db_export__symbol(struct db_export *dbe, struct symbol *sym, | |
219 | struct dso *dso) | |
220 | { | |
221 | u64 *sym_db_id = symbol__priv(sym); | |
222 | ||
223 | if (*sym_db_id) | |
224 | return 0; | |
225 | ||
226 | *sym_db_id = ++dbe->symbol_last_db_id; | |
227 | ||
228 | if (dbe->export_symbol) | |
229 | return dbe->export_symbol(dbe, sym, dso); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static struct thread *get_main_thread(struct machine *machine, struct thread *thread) | |
235 | { | |
236 | if (thread->pid_ == thread->tid) | |
427cde32 | 237 | return thread__get(thread); |
0db15b1e AH |
238 | |
239 | if (thread->pid_ == -1) | |
240 | return NULL; | |
241 | ||
242 | return machine__find_thread(machine, thread->pid_, thread->pid_); | |
243 | } | |
244 | ||
245 | static int db_ids_from_al(struct db_export *dbe, struct addr_location *al, | |
246 | u64 *dso_db_id, u64 *sym_db_id, u64 *offset) | |
247 | { | |
248 | int err; | |
249 | ||
250 | if (al->map) { | |
251 | struct dso *dso = al->map->dso; | |
252 | ||
253 | err = db_export__dso(dbe, dso, al->machine); | |
254 | if (err) | |
255 | return err; | |
256 | *dso_db_id = dso->db_id; | |
257 | ||
258 | if (!al->sym) { | |
259 | al->sym = symbol__new(al->addr, 0, 0, "unknown"); | |
260 | if (al->sym) | |
261 | symbols__insert(&dso->symbols[al->map->type], | |
262 | al->sym); | |
263 | } | |
264 | ||
265 | if (al->sym) { | |
266 | u64 *db_id = symbol__priv(al->sym); | |
267 | ||
268 | err = db_export__symbol(dbe, al->sym, dso); | |
269 | if (err) | |
270 | return err; | |
271 | *sym_db_id = *db_id; | |
272 | *offset = al->addr - al->sym->start; | |
273 | } | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
f2bff007 AH |
279 | int db_export__branch_type(struct db_export *dbe, u32 branch_type, |
280 | const char *name) | |
281 | { | |
282 | if (dbe->export_branch_type) | |
283 | return dbe->export_branch_type(dbe, branch_type, name); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
0db15b1e AH |
288 | int db_export__sample(struct db_export *dbe, union perf_event *event, |
289 | struct perf_sample *sample, struct perf_evsel *evsel, | |
7327259d | 290 | struct addr_location *al) |
0db15b1e | 291 | { |
7327259d | 292 | struct thread* thread = al->thread; |
0db15b1e AH |
293 | struct export_sample es = { |
294 | .event = event, | |
295 | .sample = sample, | |
296 | .evsel = evsel, | |
0db15b1e AH |
297 | .al = al, |
298 | }; | |
299 | struct thread *main_thread; | |
300 | struct comm *comm = NULL; | |
301 | int err; | |
302 | ||
303 | err = db_export__evsel(dbe, evsel); | |
304 | if (err) | |
305 | return err; | |
306 | ||
307 | err = db_export__machine(dbe, al->machine); | |
308 | if (err) | |
309 | return err; | |
310 | ||
311 | main_thread = get_main_thread(al->machine, thread); | |
312 | if (main_thread) | |
313 | comm = machine__thread_exec_comm(al->machine, main_thread); | |
314 | ||
315 | err = db_export__thread(dbe, thread, al->machine, comm); | |
316 | if (err) | |
427cde32 | 317 | goto out_put; |
0db15b1e AH |
318 | |
319 | if (comm) { | |
320 | err = db_export__comm(dbe, comm, main_thread); | |
321 | if (err) | |
427cde32 | 322 | goto out_put; |
0db15b1e AH |
323 | es.comm_db_id = comm->db_id; |
324 | } | |
325 | ||
326 | es.db_id = ++dbe->sample_last_db_id; | |
327 | ||
328 | err = db_ids_from_al(dbe, al, &es.dso_db_id, &es.sym_db_id, &es.offset); | |
329 | if (err) | |
427cde32 | 330 | goto out_put; |
0db15b1e AH |
331 | |
332 | if ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) && | |
333 | sample_addr_correlates_sym(&evsel->attr)) { | |
334 | struct addr_location addr_al; | |
335 | ||
336 | perf_event__preprocess_sample_addr(event, sample, thread, &addr_al); | |
337 | err = db_ids_from_al(dbe, &addr_al, &es.addr_dso_db_id, | |
338 | &es.addr_sym_db_id, &es.addr_offset); | |
339 | if (err) | |
427cde32 | 340 | goto out_put; |
88f50d60 AH |
341 | if (dbe->crp) { |
342 | err = thread_stack__process(thread, comm, sample, al, | |
343 | &addr_al, es.db_id, | |
344 | dbe->crp); | |
345 | if (err) | |
427cde32 | 346 | goto out_put; |
88f50d60 | 347 | } |
0db15b1e AH |
348 | } |
349 | ||
350 | if (dbe->export_sample) | |
427cde32 | 351 | err = dbe->export_sample(dbe, &es); |
0db15b1e | 352 | |
427cde32 AH |
353 | out_put: |
354 | thread__put(main_thread); | |
355 | return err; | |
0db15b1e | 356 | } |
f2bff007 AH |
357 | |
358 | static struct { | |
359 | u32 branch_type; | |
360 | const char *name; | |
361 | } branch_types[] = { | |
362 | {0, "no branch"}, | |
363 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL, "call"}, | |
364 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN, "return"}, | |
365 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL, "conditional jump"}, | |
366 | {PERF_IP_FLAG_BRANCH, "unconditional jump"}, | |
367 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_INTERRUPT, | |
368 | "software interrupt"}, | |
369 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_INTERRUPT, | |
370 | "return from interrupt"}, | |
371 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_SYSCALLRET, | |
372 | "system call"}, | |
373 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_SYSCALLRET, | |
374 | "return from system call"}, | |
375 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_ASYNC, "asynchronous branch"}, | |
376 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_ASYNC | | |
377 | PERF_IP_FLAG_INTERRUPT, "hardware interrupt"}, | |
378 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TX_ABORT, "transaction abort"}, | |
379 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_BEGIN, "trace begin"}, | |
380 | {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_END, "trace end"}, | |
381 | {0, NULL} | |
382 | }; | |
383 | ||
384 | int db_export__branch_types(struct db_export *dbe) | |
385 | { | |
386 | int i, err = 0; | |
387 | ||
388 | for (i = 0; branch_types[i].name ; i++) { | |
389 | err = db_export__branch_type(dbe, branch_types[i].branch_type, | |
390 | branch_types[i].name); | |
391 | if (err) | |
392 | break; | |
393 | } | |
394 | return err; | |
395 | } | |
88f50d60 AH |
396 | |
397 | int db_export__call_path(struct db_export *dbe, struct call_path *cp) | |
398 | { | |
399 | int err; | |
400 | ||
401 | if (cp->db_id) | |
402 | return 0; | |
403 | ||
404 | if (cp->parent) { | |
405 | err = db_export__call_path(dbe, cp->parent); | |
406 | if (err) | |
407 | return err; | |
408 | } | |
409 | ||
410 | cp->db_id = ++dbe->call_path_last_db_id; | |
411 | ||
412 | if (dbe->export_call_path) | |
413 | return dbe->export_call_path(dbe, cp); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | int db_export__call_return(struct db_export *dbe, struct call_return *cr) | |
419 | { | |
420 | int err; | |
421 | ||
422 | if (cr->db_id) | |
423 | return 0; | |
424 | ||
425 | err = db_export__call_path(dbe, cr->cp); | |
426 | if (err) | |
427 | return err; | |
428 | ||
429 | cr->db_id = ++dbe->call_return_last_db_id; | |
430 | ||
431 | if (dbe->export_call_return) | |
432 | return dbe->export_call_return(dbe, cr); | |
433 | ||
434 | return 0; | |
435 | } |