Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
f62d3f0f | 4 | #include "machine.h" |
c410a338 | 5 | #include "sort.h" |
234fbbf5 | 6 | #include "string.h" |
c410a338 | 7 | #include "strlist.h" |
62daacb5 | 8 | #include "thread.h" |
7c940c18 | 9 | #include "thread_map.h" |
c506c96b | 10 | #include "symbol/kallsyms.h" |
234fbbf5 | 11 | |
8115d60c | 12 | static const char *perf_event__names[] = { |
3cb6d154 FW |
13 | [0] = "TOTAL", |
14 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 15 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
16 | [PERF_RECORD_LOST] = "LOST", |
17 | [PERF_RECORD_COMM] = "COMM", | |
18 | [PERF_RECORD_EXIT] = "EXIT", | |
19 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
20 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
21 | [PERF_RECORD_FORK] = "FORK", | |
22 | [PERF_RECORD_READ] = "READ", | |
23 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
24 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
25 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
26 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
27 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
28 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
29 | }; |
30 | ||
8115d60c | 31 | const char *perf_event__name(unsigned int id) |
3835bc00 | 32 | { |
8115d60c | 33 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 34 | return "INVALID"; |
8115d60c | 35 | if (!perf_event__names[id]) |
3835bc00 | 36 | return "UNKNOWN"; |
8115d60c | 37 | return perf_event__names[id]; |
3835bc00 TG |
38 | } |
39 | ||
8d50e5b4 | 40 | static struct perf_sample synth_sample = { |
640c03ce ACM |
41 | .pid = -1, |
42 | .tid = -1, | |
43 | .time = -1, | |
44 | .stream_id = -1, | |
45 | .cpu = -1, | |
46 | .period = 1, | |
47 | }; | |
48 | ||
f5faf726 | 49 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 50 | { |
234fbbf5 ACM |
51 | char filename[PATH_MAX]; |
52 | char bf[BUFSIZ]; | |
53 | FILE *fp; | |
54 | size_t size = 0; | |
f5faf726 | 55 | pid_t tgid = -1; |
234fbbf5 ACM |
56 | |
57 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
58 | ||
59 | fp = fopen(filename, "r"); | |
60 | if (fp == NULL) { | |
234fbbf5 ACM |
61 | pr_debug("couldn't open %s\n", filename); |
62 | return 0; | |
63 | } | |
64 | ||
f5faf726 | 65 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 66 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
67 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
68 | filename); | |
69 | break; | |
9c90a61c | 70 | } |
234fbbf5 ACM |
71 | |
72 | if (memcmp(bf, "Name:", 5) == 0) { | |
73 | char *name = bf + 5; | |
74 | while (*name && isspace(*name)) | |
75 | ++name; | |
76 | size = strlen(name) - 1; | |
f5faf726 DA |
77 | if (size >= len) |
78 | size = len - 1; | |
79 | memcpy(comm, name, size); | |
cfbd70c1 | 80 | comm[size] = '\0'; |
f5faf726 | 81 | |
234fbbf5 ACM |
82 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
83 | char *tgids = bf + 5; | |
84 | while (*tgids && isspace(*tgids)) | |
85 | ++tgids; | |
f5faf726 | 86 | tgid = atoi(tgids); |
234fbbf5 ACM |
87 | } |
88 | } | |
89 | ||
f5faf726 DA |
90 | fclose(fp); |
91 | ||
92 | return tgid; | |
93 | } | |
94 | ||
95 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
96 | union perf_event *event, pid_t pid, | |
97 | int full, | |
98 | perf_event__handler_t process, | |
99 | struct machine *machine) | |
100 | { | |
101 | char filename[PATH_MAX]; | |
102 | size_t size; | |
103 | DIR *tasks; | |
104 | struct dirent dirent, *next; | |
105 | pid_t tgid; | |
106 | ||
107 | memset(&event->comm, 0, sizeof(event->comm)); | |
108 | ||
f5db57c4 DY |
109 | if (machine__is_host(machine)) |
110 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
111 | sizeof(event->comm.comm)); | |
112 | else | |
113 | tgid = machine->pid; | |
114 | ||
f5faf726 DA |
115 | if (tgid < 0) |
116 | goto out; | |
117 | ||
118 | event->comm.pid = tgid; | |
9c90a61c | 119 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
120 | |
121 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 122 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 123 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
124 | event->comm.header.size = (sizeof(event->comm) - |
125 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 126 | machine->id_hdr_size); |
234fbbf5 | 127 | if (!full) { |
9c90a61c | 128 | event->comm.tid = pid; |
234fbbf5 | 129 | |
1e6d5322 DA |
130 | if (process(tool, event, &synth_sample, machine) != 0) |
131 | return -1; | |
132 | ||
9c90a61c | 133 | goto out; |
234fbbf5 ACM |
134 | } |
135 | ||
c239c25a DY |
136 | if (machine__is_default_guest(machine)) |
137 | return 0; | |
138 | ||
99563465 DY |
139 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", |
140 | machine->root_dir, pid); | |
234fbbf5 ACM |
141 | |
142 | tasks = opendir(filename); | |
f5faf726 DA |
143 | if (tasks == NULL) { |
144 | pr_debug("couldn't open %s\n", filename); | |
145 | return 0; | |
146 | } | |
234fbbf5 ACM |
147 | |
148 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
149 | char *end; | |
150 | pid = strtol(dirent.d_name, &end, 10); | |
151 | if (*end) | |
152 | continue; | |
153 | ||
f5faf726 DA |
154 | /* already have tgid; jut want to update the comm */ |
155 | (void) perf_event__get_comm_tgid(pid, event->comm.comm, | |
156 | sizeof(event->comm.comm)); | |
157 | ||
158 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 159 | size = PERF_ALIGN(size, sizeof(u64)); |
f5faf726 DA |
160 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
161 | event->comm.header.size = (sizeof(event->comm) - | |
162 | (sizeof(event->comm.comm) - size) + | |
163 | machine->id_hdr_size); | |
164 | ||
9c90a61c | 165 | event->comm.tid = pid; |
234fbbf5 | 166 | |
1e6d5322 DA |
167 | if (process(tool, event, &synth_sample, machine) != 0) { |
168 | tgid = -1; | |
169 | break; | |
170 | } | |
234fbbf5 | 171 | } |
234fbbf5 | 172 | |
9c90a61c ACM |
173 | closedir(tasks); |
174 | out: | |
9c90a61c | 175 | return tgid; |
234fbbf5 ACM |
176 | } |
177 | ||
a18382b6 JO |
178 | int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
179 | union perf_event *event, | |
180 | pid_t pid, pid_t tgid, | |
181 | perf_event__handler_t process, | |
182 | struct machine *machine, | |
183 | bool mmap_data) | |
234fbbf5 ACM |
184 | { |
185 | char filename[PATH_MAX]; | |
186 | FILE *fp; | |
1e6d5322 | 187 | int rc = 0; |
234fbbf5 | 188 | |
c239c25a DY |
189 | if (machine__is_default_guest(machine)) |
190 | return 0; | |
191 | ||
99563465 DY |
192 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
193 | machine->root_dir, pid); | |
234fbbf5 ACM |
194 | |
195 | fp = fopen(filename, "r"); | |
196 | if (fp == NULL) { | |
197 | /* | |
198 | * We raced with a task exiting - just return: | |
199 | */ | |
200 | pr_debug("couldn't open %s\n", filename); | |
201 | return -1; | |
202 | } | |
203 | ||
3090ffb5 | 204 | event->header.type = PERF_RECORD_MMAP; |
9c90a61c | 205 | |
234fbbf5 | 206 | while (1) { |
60648033 NK |
207 | char bf[BUFSIZ]; |
208 | char prot[5]; | |
209 | char execname[PATH_MAX]; | |
210 | char anonstr[] = "//anon"; | |
234fbbf5 | 211 | size_t size; |
5c5e854b | 212 | ssize_t n; |
60648033 | 213 | |
234fbbf5 ACM |
214 | if (fgets(bf, sizeof(bf), fp) == NULL) |
215 | break; | |
216 | ||
60648033 NK |
217 | /* ensure null termination since stack will be reused. */ |
218 | strcpy(execname, ""); | |
219 | ||
234fbbf5 | 220 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
3090ffb5 SE |
221 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n", |
222 | &event->mmap.start, &event->mmap.len, prot, | |
223 | &event->mmap.pgoff, | |
224 | execname); | |
9d4ecc88 DZ |
225 | /* |
226 | * Anon maps don't have the execname. | |
227 | */ | |
228 | if (n < 4) | |
5c5e854b | 229 | continue; |
62605dc5 ACM |
230 | /* |
231 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
232 | */ | |
73547aac DY |
233 | if (machine__is_host(machine)) |
234 | event->header.misc = PERF_RECORD_MISC_USER; | |
235 | else | |
236 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 237 | |
62605dc5 ACM |
238 | if (prot[2] != 'x') { |
239 | if (!mmap_data || prot[0] != 'r') | |
240 | continue; | |
241 | ||
242 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
243 | } | |
60648033 NK |
244 | |
245 | if (!strcmp(execname, "")) | |
246 | strcpy(execname, anonstr); | |
247 | ||
248 | size = strlen(execname) + 1; | |
3090ffb5 | 249 | memcpy(event->mmap.filename, execname, size); |
60648033 | 250 | size = PERF_ALIGN(size, sizeof(u64)); |
3090ffb5 SE |
251 | event->mmap.len -= event->mmap.start; |
252 | event->mmap.header.size = (sizeof(event->mmap) - | |
253 | (sizeof(event->mmap.filename) - size)); | |
254 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); | |
255 | event->mmap.header.size += machine->id_hdr_size; | |
256 | event->mmap.pid = tgid; | |
257 | event->mmap.tid = pid; | |
60648033 NK |
258 | |
259 | if (process(tool, event, &synth_sample, machine) != 0) { | |
260 | rc = -1; | |
261 | break; | |
234fbbf5 ACM |
262 | } |
263 | } | |
264 | ||
265 | fclose(fp); | |
1e6d5322 | 266 | return rc; |
234fbbf5 ACM |
267 | } |
268 | ||
45694aa7 | 269 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 270 | perf_event__handler_t process, |
8115d60c | 271 | struct machine *machine) |
b7cece76 | 272 | { |
1e6d5322 | 273 | int rc = 0; |
b7cece76 | 274 | struct rb_node *nd; |
23346f21 | 275 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 276 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 277 | machine->id_hdr_size)); |
9c90a61c ACM |
278 | if (event == NULL) { |
279 | pr_debug("Not enough memory synthesizing mmap event " | |
280 | "for kernel modules\n"); | |
281 | return -1; | |
282 | } | |
283 | ||
284 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 285 | |
a1645ce1 ZY |
286 | /* |
287 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
288 | * __perf_event_mmap | |
289 | */ | |
23346f21 | 290 | if (machine__is_host(machine)) |
9c90a61c | 291 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 292 | else |
9c90a61c | 293 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
294 | |
295 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 296 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
297 | size_t size; |
298 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
299 | ||
300 | if (pos->dso->kernel) | |
301 | continue; | |
302 | ||
9ac3e487 | 303 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
304 | event->mmap.header.type = PERF_RECORD_MMAP; |
305 | event->mmap.header.size = (sizeof(event->mmap) - | |
306 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
307 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
308 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
309 | event->mmap.start = pos->start; |
310 | event->mmap.len = pos->end - pos->start; | |
311 | event->mmap.pid = machine->pid; | |
312 | ||
313 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 314 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
315 | if (process(tool, event, &synth_sample, machine) != 0) { |
316 | rc = -1; | |
317 | break; | |
318 | } | |
b7cece76 ACM |
319 | } |
320 | ||
9c90a61c | 321 | free(event); |
1e6d5322 | 322 | return rc; |
b7cece76 ACM |
323 | } |
324 | ||
8115d60c ACM |
325 | static int __event__synthesize_thread(union perf_event *comm_event, |
326 | union perf_event *mmap_event, | |
defd8d38 DA |
327 | pid_t pid, int full, |
328 | perf_event__handler_t process, | |
45694aa7 | 329 | struct perf_tool *tool, |
62605dc5 | 330 | struct machine *machine, bool mmap_data) |
234fbbf5 | 331 | { |
defd8d38 | 332 | pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full, |
743eb868 | 333 | process, machine); |
234fbbf5 ACM |
334 | if (tgid == -1) |
335 | return -1; | |
45694aa7 | 336 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, |
62605dc5 | 337 | process, machine, mmap_data); |
234fbbf5 ACM |
338 | } |
339 | ||
45694aa7 | 340 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 341 | struct thread_map *threads, |
7c940c18 | 342 | perf_event__handler_t process, |
62605dc5 ACM |
343 | struct machine *machine, |
344 | bool mmap_data) | |
9c90a61c | 345 | { |
8115d60c | 346 | union perf_event *comm_event, *mmap_event; |
defd8d38 | 347 | int err = -1, thread, j; |
9c90a61c | 348 | |
743eb868 | 349 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
350 | if (comm_event == NULL) |
351 | goto out; | |
352 | ||
743eb868 | 353 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
354 | if (mmap_event == NULL) |
355 | goto out_free_comm; | |
356 | ||
401b8e13 ACM |
357 | err = 0; |
358 | for (thread = 0; thread < threads->nr; ++thread) { | |
359 | if (__event__synthesize_thread(comm_event, mmap_event, | |
defd8d38 | 360 | threads->map[thread], 0, |
62605dc5 ACM |
361 | process, tool, machine, |
362 | mmap_data)) { | |
401b8e13 ACM |
363 | err = -1; |
364 | break; | |
365 | } | |
defd8d38 DA |
366 | |
367 | /* | |
368 | * comm.pid is set to thread group id by | |
369 | * perf_event__synthesize_comm | |
370 | */ | |
371 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
372 | bool need_leader = true; | |
373 | ||
374 | /* is thread group leader in thread_map? */ | |
375 | for (j = 0; j < threads->nr; ++j) { | |
376 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
377 | need_leader = false; | |
378 | break; | |
379 | } | |
380 | } | |
381 | ||
382 | /* if not, generate events for it */ | |
383 | if (need_leader && | |
62605dc5 ACM |
384 | __event__synthesize_thread(comm_event, mmap_event, |
385 | comm_event->comm.pid, 0, | |
386 | process, tool, machine, | |
387 | mmap_data)) { | |
defd8d38 DA |
388 | err = -1; |
389 | break; | |
390 | } | |
391 | } | |
401b8e13 | 392 | } |
9c90a61c ACM |
393 | free(mmap_event); |
394 | out_free_comm: | |
395 | free(comm_event); | |
396 | out: | |
397 | return err; | |
398 | } | |
399 | ||
45694aa7 | 400 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 401 | perf_event__handler_t process, |
62605dc5 | 402 | struct machine *machine, bool mmap_data) |
234fbbf5 ACM |
403 | { |
404 | DIR *proc; | |
99563465 | 405 | char proc_path[PATH_MAX]; |
234fbbf5 | 406 | struct dirent dirent, *next; |
8115d60c | 407 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
408 | int err = -1; |
409 | ||
743eb868 | 410 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
411 | if (comm_event == NULL) |
412 | goto out; | |
413 | ||
743eb868 | 414 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
415 | if (mmap_event == NULL) |
416 | goto out_free_comm; | |
234fbbf5 | 417 | |
c239c25a DY |
418 | if (machine__is_default_guest(machine)) |
419 | return 0; | |
420 | ||
99563465 DY |
421 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
422 | proc = opendir(proc_path); | |
423 | ||
9c90a61c ACM |
424 | if (proc == NULL) |
425 | goto out_free_mmap; | |
234fbbf5 ACM |
426 | |
427 | while (!readdir_r(proc, &dirent, &next) && next) { | |
428 | char *end; | |
429 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
430 | ||
431 | if (*end) /* only interested in proper numerical dirents */ | |
432 | continue; | |
ba361c92 ACM |
433 | /* |
434 | * We may race with exiting thread, so don't stop just because | |
435 | * one thread couldn't be synthesized. | |
436 | */ | |
437 | __event__synthesize_thread(comm_event, mmap_event, pid, 1, | |
62605dc5 | 438 | process, tool, machine, mmap_data); |
234fbbf5 ACM |
439 | } |
440 | ||
9c90a61c | 441 | err = 0; |
1e6d5322 | 442 | closedir(proc); |
9c90a61c ACM |
443 | out_free_mmap: |
444 | free(mmap_event); | |
445 | out_free_comm: | |
446 | free(comm_event); | |
447 | out: | |
448 | return err; | |
234fbbf5 | 449 | } |
62daacb5 | 450 | |
56b03f3c ACM |
451 | struct process_symbol_args { |
452 | const char *name; | |
453 | u64 start; | |
454 | }; | |
455 | ||
3b01a413 | 456 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 457 | u64 start) |
56b03f3c ACM |
458 | { |
459 | struct process_symbol_args *args = arg; | |
460 | ||
881516eb ACM |
461 | /* |
462 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
463 | * an 'A' to the same address as "_stext". | |
464 | */ | |
465 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
466 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
467 | return 0; |
468 | ||
469 | args->start = start; | |
470 | return 1; | |
471 | } | |
472 | ||
29b596b5 AH |
473 | u64 kallsyms__get_function_start(const char *kallsyms_filename, |
474 | const char *symbol_name) | |
475 | { | |
476 | struct process_symbol_args args = { .name = symbol_name, }; | |
477 | ||
478 | if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) | |
479 | return 0; | |
480 | ||
481 | return args.start; | |
482 | } | |
483 | ||
45694aa7 | 484 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 485 | perf_event__handler_t process, |
8115d60c ACM |
486 | struct machine *machine, |
487 | const char *symbol_name) | |
56b03f3c ACM |
488 | { |
489 | size_t size; | |
a1645ce1 ZY |
490 | const char *filename, *mmap_name; |
491 | char path[PATH_MAX]; | |
492 | char name_buff[PATH_MAX]; | |
493 | struct map *map; | |
29b596b5 | 494 | u64 start; |
9c90a61c | 495 | int err; |
56b03f3c ACM |
496 | /* |
497 | * We should get this from /sys/kernel/sections/.text, but till that is | |
498 | * available use this, and after it is use this as a fallback for older | |
499 | * kernels. | |
500 | */ | |
8115d60c | 501 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 502 | machine->id_hdr_size)); |
9c90a61c ACM |
503 | if (event == NULL) { |
504 | pr_debug("Not enough memory synthesizing mmap event " | |
505 | "for kernel modules\n"); | |
506 | return -1; | |
507 | } | |
56b03f3c | 508 | |
48ea8f54 | 509 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 510 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
511 | /* |
512 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
513 | * see kernel/perf_event.c __perf_event_mmap | |
514 | */ | |
9c90a61c | 515 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
516 | filename = "/proc/kallsyms"; |
517 | } else { | |
9c90a61c | 518 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 519 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
520 | filename = (char *) symbol_conf.default_guest_kallsyms; |
521 | else { | |
23346f21 | 522 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
523 | filename = path; |
524 | } | |
525 | } | |
526 | ||
29b596b5 AH |
527 | start = kallsyms__get_function_start(filename, symbol_name); |
528 | if (!start) { | |
0b9e01a4 | 529 | free(event); |
56b03f3c | 530 | return -ENOENT; |
0b9e01a4 | 531 | } |
56b03f3c | 532 | |
23346f21 | 533 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 534 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 535 | "%s%s", mmap_name, symbol_name) + 1; |
9ac3e487 | 536 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
537 | event->mmap.header.type = PERF_RECORD_MMAP; |
538 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 539 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
29b596b5 | 540 | event->mmap.pgoff = start; |
9c90a61c ACM |
541 | event->mmap.start = map->start; |
542 | event->mmap.len = map->end - event->mmap.start; | |
543 | event->mmap.pid = machine->pid; | |
544 | ||
45694aa7 | 545 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
546 | free(event); |
547 | ||
548 | return err; | |
56b03f3c ACM |
549 | } |
550 | ||
482ad897 ACM |
551 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
552 | { | |
553 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
554 | } | |
555 | ||
1d037ca1 | 556 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 557 | union perf_event *event, |
162f0bef | 558 | struct perf_sample *sample, |
743eb868 | 559 | struct machine *machine) |
62daacb5 | 560 | { |
162f0bef | 561 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
562 | } |
563 | ||
1d037ca1 | 564 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 565 | union perf_event *event, |
162f0bef | 566 | struct perf_sample *sample, |
b0a7d1a0 | 567 | struct machine *machine) |
62daacb5 | 568 | { |
162f0bef | 569 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 570 | } |
b7cece76 | 571 | |
482ad897 ACM |
572 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
573 | { | |
62605dc5 | 574 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 575 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
576 | event->mmap.len, event->mmap.pgoff, |
577 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
578 | event->mmap.filename); | |
482ad897 ACM |
579 | } |
580 | ||
5c5e854b SE |
581 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
582 | { | |
583 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
62605dc5 | 584 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c %s\n", |
5c5e854b SE |
585 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
586 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
587 | event->mmap2.min, event->mmap2.ino, | |
588 | event->mmap2.ino_generation, | |
62605dc5 | 589 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', |
5c5e854b SE |
590 | event->mmap2.filename); |
591 | } | |
592 | ||
b0a7d1a0 | 593 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 594 | union perf_event *event, |
162f0bef | 595 | struct perf_sample *sample, |
743eb868 | 596 | struct machine *machine) |
a1645ce1 | 597 | { |
162f0bef | 598 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
599 | } |
600 | ||
5c5e854b SE |
601 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
602 | union perf_event *event, | |
162f0bef | 603 | struct perf_sample *sample, |
5c5e854b SE |
604 | struct machine *machine) |
605 | { | |
162f0bef | 606 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
607 | } |
608 | ||
482ad897 ACM |
609 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
610 | { | |
611 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
612 | event->fork.pid, event->fork.tid, | |
613 | event->fork.ppid, event->fork.ptid); | |
614 | } | |
615 | ||
f62d3f0f | 616 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 617 | union perf_event *event, |
162f0bef | 618 | struct perf_sample *sample, |
f62d3f0f | 619 | struct machine *machine) |
62daacb5 | 620 | { |
162f0bef | 621 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 622 | } |
1ed091c4 | 623 | |
f62d3f0f ACM |
624 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
625 | union perf_event *event, | |
162f0bef | 626 | struct perf_sample *sample, |
f62d3f0f ACM |
627 | struct machine *machine) |
628 | { | |
162f0bef | 629 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
630 | } |
631 | ||
482ad897 ACM |
632 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
633 | { | |
634 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
635 | perf_event__name(event->header.type)); | |
636 | ||
637 | switch (event->header.type) { | |
638 | case PERF_RECORD_COMM: | |
639 | ret += perf_event__fprintf_comm(event, fp); | |
640 | break; | |
641 | case PERF_RECORD_FORK: | |
642 | case PERF_RECORD_EXIT: | |
643 | ret += perf_event__fprintf_task(event, fp); | |
644 | break; | |
645 | case PERF_RECORD_MMAP: | |
646 | ret += perf_event__fprintf_mmap(event, fp); | |
647 | break; | |
5c5e854b SE |
648 | case PERF_RECORD_MMAP2: |
649 | ret += perf_event__fprintf_mmap2(event, fp); | |
650 | break; | |
482ad897 ACM |
651 | default: |
652 | ret += fprintf(fp, "\n"); | |
653 | } | |
654 | ||
655 | return ret; | |
656 | } | |
657 | ||
b0a7d1a0 ACM |
658 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
659 | union perf_event *event, | |
162f0bef | 660 | struct perf_sample *sample, |
b0a7d1a0 | 661 | struct machine *machine) |
b83f920e | 662 | { |
162f0bef | 663 | return machine__process_event(machine, event, sample); |
b83f920e SD |
664 | } |
665 | ||
316c7136 | 666 | void thread__find_addr_map(struct thread *thread, |
743eb868 ACM |
667 | struct machine *machine, u8 cpumode, |
668 | enum map_type type, u64 addr, | |
326f59bf | 669 | struct addr_location *al) |
1ed091c4 | 670 | { |
316c7136 | 671 | struct map_groups *mg = &thread->mg; |
5b7ba82a | 672 | bool load_map = false; |
1ed091c4 | 673 | |
cc22e575 | 674 | al->machine = machine; |
316c7136 | 675 | al->thread = thread; |
1ed091c4 | 676 | al->addr = addr; |
a1645ce1 ZY |
677 | al->cpumode = cpumode; |
678 | al->filtered = false; | |
1ed091c4 | 679 | |
743eb868 ACM |
680 | if (machine == NULL) { |
681 | al->map = NULL; | |
682 | return; | |
683 | } | |
684 | ||
a1645ce1 | 685 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 686 | al->level = 'k'; |
23346f21 | 687 | mg = &machine->kmaps; |
5b7ba82a | 688 | load_map = true; |
a1645ce1 | 689 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 690 | al->level = '.'; |
a1645ce1 ZY |
691 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
692 | al->level = 'g'; | |
23346f21 | 693 | mg = &machine->kmaps; |
5b7ba82a | 694 | load_map = true; |
fb50bb43 DY |
695 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
696 | al->level = 'u'; | |
a1645ce1 | 697 | } else { |
fb50bb43 | 698 | al->level = 'H'; |
1ed091c4 | 699 | al->map = NULL; |
a1645ce1 ZY |
700 | |
701 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
702 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
703 | !perf_guest) | |
704 | al->filtered = true; | |
705 | if ((cpumode == PERF_RECORD_MISC_USER || | |
706 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
707 | !perf_host) | |
708 | al->filtered = true; | |
709 | ||
1ed091c4 ACM |
710 | return; |
711 | } | |
712 | try_again: | |
9958e1f0 | 713 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
714 | if (al->map == NULL) { |
715 | /* | |
716 | * If this is outside of all known maps, and is a negative | |
717 | * address, try to look it up in the kernel dso, as it might be | |
718 | * a vsyscall or vdso (which executes in user-mode). | |
719 | * | |
720 | * XXX This is nasty, we should have a symbol list in the | |
721 | * "[vdso]" dso, but for now lets use the old trick of looking | |
722 | * in the whole kernel symbol list. | |
723 | */ | |
a1645ce1 | 724 | if ((long long)al->addr < 0 && |
6c6804fb | 725 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
726 | machine && mg != &machine->kmaps) { |
727 | mg = &machine->kmaps; | |
1ed091c4 ACM |
728 | goto try_again; |
729 | } | |
5b7ba82a AH |
730 | } else { |
731 | /* | |
732 | * Kernel maps might be changed when loading symbols so loading | |
733 | * must be done prior to using kernel maps. | |
734 | */ | |
735 | if (load_map) | |
326f59bf | 736 | map__load(al->map, machine->symbol_filter); |
1ed091c4 | 737 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 738 | } |
59ee68ec ACM |
739 | } |
740 | ||
743eb868 ACM |
741 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
742 | u8 cpumode, enum map_type type, u64 addr, | |
61710bde | 743 | struct addr_location *al) |
59ee68ec | 744 | { |
326f59bf | 745 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 746 | if (al->map != NULL) |
61710bde AH |
747 | al->sym = map__find_symbol(al->map, al->addr, |
748 | machine->symbol_filter); | |
59ee68ec ACM |
749 | else |
750 | al->sym = NULL; | |
1ed091c4 ACM |
751 | } |
752 | ||
8115d60c | 753 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 754 | struct machine *machine, |
8115d60c | 755 | struct addr_location *al, |
e44baa3e | 756 | struct perf_sample *sample) |
1ed091c4 | 757 | { |
8115d60c | 758 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
ef89325f AH |
759 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
760 | sample->pid); | |
41a37e20 | 761 | |
1ed091c4 ACM |
762 | if (thread == NULL) |
763 | return -1; | |
764 | ||
1f3878c1 | 765 | if (thread__is_filtered(thread)) |
c410a338 ACM |
766 | goto out_filtered; |
767 | ||
b9c5143a | 768 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 769 | /* |
743eb868 | 770 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
771 | * |
772 | * This should have happened earlier, when we processed the kernel MMAP | |
773 | * events, but for older perf.data files there was no such thing, so do | |
774 | * it now. | |
775 | */ | |
776 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
777 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
778 | machine__create_kernel_maps(machine); | |
1ed091c4 | 779 | |
743eb868 | 780 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
ef89325f | 781 | sample->ip, al); |
1ed091c4 ACM |
782 | dump_printf(" ...... dso: %s\n", |
783 | al->map ? al->map->dso->long_name : | |
784 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 785 | al->sym = NULL; |
8d50e5b4 | 786 | al->cpu = sample->cpu; |
96415e4d ACM |
787 | |
788 | if (al->map) { | |
cb8f4e9a NK |
789 | struct dso *dso = al->map->dso; |
790 | ||
96415e4d | 791 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
792 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
793 | dso->short_name) || | |
794 | (dso->short_name != dso->long_name && | |
795 | strlist__has_entry(symbol_conf.dso_list, | |
796 | dso->long_name))))) | |
96415e4d | 797 | goto out_filtered; |
96415e4d | 798 | |
e44baa3e AH |
799 | al->sym = map__find_symbol(al->map, al->addr, |
800 | machine->symbol_filter); | |
96415e4d | 801 | } |
c410a338 | 802 | |
1500b93b FT |
803 | if (symbol_conf.sym_list && |
804 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
805 | al->sym->name))) | |
c410a338 ACM |
806 | goto out_filtered; |
807 | ||
c410a338 ACM |
808 | return 0; |
809 | ||
810 | out_filtered: | |
811 | al->filtered = true; | |
1ed091c4 ACM |
812 | return 0; |
813 | } |