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Commit | Line | Data |
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234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
b3cef7f6 | 4 | #include "hist.h" |
f62d3f0f | 5 | #include "machine.h" |
c410a338 | 6 | #include "sort.h" |
234fbbf5 | 7 | #include "string.h" |
c410a338 | 8 | #include "strlist.h" |
62daacb5 | 9 | #include "thread.h" |
7c940c18 | 10 | #include "thread_map.h" |
c506c96b | 11 | #include "symbol/kallsyms.h" |
234fbbf5 | 12 | |
8115d60c | 13 | static const char *perf_event__names[] = { |
3cb6d154 FW |
14 | [0] = "TOTAL", |
15 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 16 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
17 | [PERF_RECORD_LOST] = "LOST", |
18 | [PERF_RECORD_COMM] = "COMM", | |
19 | [PERF_RECORD_EXIT] = "EXIT", | |
20 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
21 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
22 | [PERF_RECORD_FORK] = "FORK", | |
23 | [PERF_RECORD_READ] = "READ", | |
24 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
25 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
26 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
27 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
28 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
29 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
30 | }; |
31 | ||
8115d60c | 32 | const char *perf_event__name(unsigned int id) |
3835bc00 | 33 | { |
8115d60c | 34 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 35 | return "INVALID"; |
8115d60c | 36 | if (!perf_event__names[id]) |
3835bc00 | 37 | return "UNKNOWN"; |
8115d60c | 38 | return perf_event__names[id]; |
3835bc00 TG |
39 | } |
40 | ||
8d50e5b4 | 41 | static struct perf_sample synth_sample = { |
640c03ce ACM |
42 | .pid = -1, |
43 | .tid = -1, | |
44 | .time = -1, | |
45 | .stream_id = -1, | |
46 | .cpu = -1, | |
47 | .period = 1, | |
48 | }; | |
49 | ||
f5faf726 | 50 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 51 | { |
234fbbf5 ACM |
52 | char filename[PATH_MAX]; |
53 | char bf[BUFSIZ]; | |
54 | FILE *fp; | |
55 | size_t size = 0; | |
f5faf726 | 56 | pid_t tgid = -1; |
234fbbf5 ACM |
57 | |
58 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
59 | ||
60 | fp = fopen(filename, "r"); | |
61 | if (fp == NULL) { | |
234fbbf5 ACM |
62 | pr_debug("couldn't open %s\n", filename); |
63 | return 0; | |
64 | } | |
65 | ||
f5faf726 | 66 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 67 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
68 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
69 | filename); | |
70 | break; | |
9c90a61c | 71 | } |
234fbbf5 ACM |
72 | |
73 | if (memcmp(bf, "Name:", 5) == 0) { | |
74 | char *name = bf + 5; | |
75 | while (*name && isspace(*name)) | |
76 | ++name; | |
77 | size = strlen(name) - 1; | |
f5faf726 DA |
78 | if (size >= len) |
79 | size = len - 1; | |
80 | memcpy(comm, name, size); | |
cfbd70c1 | 81 | comm[size] = '\0'; |
f5faf726 | 82 | |
234fbbf5 ACM |
83 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
84 | char *tgids = bf + 5; | |
85 | while (*tgids && isspace(*tgids)) | |
86 | ++tgids; | |
f5faf726 | 87 | tgid = atoi(tgids); |
234fbbf5 ACM |
88 | } |
89 | } | |
90 | ||
f5faf726 DA |
91 | fclose(fp); |
92 | ||
93 | return tgid; | |
94 | } | |
95 | ||
96 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
97 | union perf_event *event, pid_t pid, | |
f5faf726 DA |
98 | perf_event__handler_t process, |
99 | struct machine *machine) | |
100 | { | |
f5faf726 | 101 | size_t size; |
f5faf726 DA |
102 | pid_t tgid; |
103 | ||
104 | memset(&event->comm, 0, sizeof(event->comm)); | |
105 | ||
f5db57c4 DY |
106 | if (machine__is_host(machine)) |
107 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
108 | sizeof(event->comm.comm)); | |
109 | else | |
110 | tgid = machine->pid; | |
111 | ||
f5faf726 DA |
112 | if (tgid < 0) |
113 | goto out; | |
114 | ||
115 | event->comm.pid = tgid; | |
9c90a61c | 116 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
117 | |
118 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 119 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 120 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
121 | event->comm.header.size = (sizeof(event->comm) - |
122 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 123 | machine->id_hdr_size); |
bfd66cc7 | 124 | event->comm.tid = pid; |
f5faf726 | 125 | |
bfd66cc7 DZ |
126 | if (process(tool, event, &synth_sample, machine) != 0) |
127 | return -1; | |
234fbbf5 | 128 | |
9c90a61c | 129 | out: |
9c90a61c | 130 | return tgid; |
234fbbf5 ACM |
131 | } |
132 | ||
363b785f DZ |
133 | static int perf_event__synthesize_fork(struct perf_tool *tool, |
134 | union perf_event *event, pid_t pid, | |
135 | pid_t tgid, perf_event__handler_t process, | |
136 | struct machine *machine) | |
137 | { | |
138 | memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size); | |
139 | ||
140 | /* this is really a clone event but we use fork to synthesize it */ | |
141 | event->fork.ppid = tgid; | |
142 | event->fork.ptid = tgid; | |
143 | event->fork.pid = tgid; | |
144 | event->fork.tid = pid; | |
145 | event->fork.header.type = PERF_RECORD_FORK; | |
146 | ||
147 | event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size); | |
148 | ||
149 | if (process(tool, event, &synth_sample, machine) != 0) | |
150 | return -1; | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
a18382b6 JO |
155 | int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
156 | union perf_event *event, | |
157 | pid_t pid, pid_t tgid, | |
158 | perf_event__handler_t process, | |
159 | struct machine *machine, | |
160 | bool mmap_data) | |
234fbbf5 ACM |
161 | { |
162 | char filename[PATH_MAX]; | |
163 | FILE *fp; | |
1e6d5322 | 164 | int rc = 0; |
234fbbf5 | 165 | |
c239c25a DY |
166 | if (machine__is_default_guest(machine)) |
167 | return 0; | |
168 | ||
99563465 DY |
169 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
170 | machine->root_dir, pid); | |
234fbbf5 ACM |
171 | |
172 | fp = fopen(filename, "r"); | |
173 | if (fp == NULL) { | |
174 | /* | |
175 | * We raced with a task exiting - just return: | |
176 | */ | |
177 | pr_debug("couldn't open %s\n", filename); | |
178 | return -1; | |
179 | } | |
180 | ||
3090ffb5 | 181 | event->header.type = PERF_RECORD_MMAP; |
9c90a61c | 182 | |
234fbbf5 | 183 | while (1) { |
60648033 NK |
184 | char bf[BUFSIZ]; |
185 | char prot[5]; | |
186 | char execname[PATH_MAX]; | |
187 | char anonstr[] = "//anon"; | |
234fbbf5 | 188 | size_t size; |
5c5e854b | 189 | ssize_t n; |
60648033 | 190 | |
234fbbf5 ACM |
191 | if (fgets(bf, sizeof(bf), fp) == NULL) |
192 | break; | |
193 | ||
60648033 NK |
194 | /* ensure null termination since stack will be reused. */ |
195 | strcpy(execname, ""); | |
196 | ||
234fbbf5 | 197 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
3090ffb5 SE |
198 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n", |
199 | &event->mmap.start, &event->mmap.len, prot, | |
200 | &event->mmap.pgoff, | |
201 | execname); | |
9d4ecc88 DZ |
202 | /* |
203 | * Anon maps don't have the execname. | |
204 | */ | |
205 | if (n < 4) | |
5c5e854b | 206 | continue; |
62605dc5 ACM |
207 | /* |
208 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
209 | */ | |
73547aac DY |
210 | if (machine__is_host(machine)) |
211 | event->header.misc = PERF_RECORD_MISC_USER; | |
212 | else | |
213 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 214 | |
62605dc5 ACM |
215 | if (prot[2] != 'x') { |
216 | if (!mmap_data || prot[0] != 'r') | |
217 | continue; | |
218 | ||
219 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
220 | } | |
60648033 NK |
221 | |
222 | if (!strcmp(execname, "")) | |
223 | strcpy(execname, anonstr); | |
224 | ||
225 | size = strlen(execname) + 1; | |
3090ffb5 | 226 | memcpy(event->mmap.filename, execname, size); |
60648033 | 227 | size = PERF_ALIGN(size, sizeof(u64)); |
3090ffb5 SE |
228 | event->mmap.len -= event->mmap.start; |
229 | event->mmap.header.size = (sizeof(event->mmap) - | |
230 | (sizeof(event->mmap.filename) - size)); | |
231 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); | |
232 | event->mmap.header.size += machine->id_hdr_size; | |
233 | event->mmap.pid = tgid; | |
234 | event->mmap.tid = pid; | |
60648033 NK |
235 | |
236 | if (process(tool, event, &synth_sample, machine) != 0) { | |
237 | rc = -1; | |
238 | break; | |
234fbbf5 ACM |
239 | } |
240 | } | |
241 | ||
242 | fclose(fp); | |
1e6d5322 | 243 | return rc; |
234fbbf5 ACM |
244 | } |
245 | ||
45694aa7 | 246 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 247 | perf_event__handler_t process, |
8115d60c | 248 | struct machine *machine) |
b7cece76 | 249 | { |
1e6d5322 | 250 | int rc = 0; |
b7cece76 | 251 | struct rb_node *nd; |
23346f21 | 252 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 253 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 254 | machine->id_hdr_size)); |
9c90a61c ACM |
255 | if (event == NULL) { |
256 | pr_debug("Not enough memory synthesizing mmap event " | |
257 | "for kernel modules\n"); | |
258 | return -1; | |
259 | } | |
260 | ||
261 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 262 | |
a1645ce1 ZY |
263 | /* |
264 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
265 | * __perf_event_mmap | |
266 | */ | |
23346f21 | 267 | if (machine__is_host(machine)) |
9c90a61c | 268 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 269 | else |
9c90a61c | 270 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
271 | |
272 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 273 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
274 | size_t size; |
275 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
276 | ||
277 | if (pos->dso->kernel) | |
278 | continue; | |
279 | ||
9ac3e487 | 280 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
281 | event->mmap.header.type = PERF_RECORD_MMAP; |
282 | event->mmap.header.size = (sizeof(event->mmap) - | |
283 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
284 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
285 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
286 | event->mmap.start = pos->start; |
287 | event->mmap.len = pos->end - pos->start; | |
288 | event->mmap.pid = machine->pid; | |
289 | ||
290 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 291 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
292 | if (process(tool, event, &synth_sample, machine) != 0) { |
293 | rc = -1; | |
294 | break; | |
295 | } | |
b7cece76 ACM |
296 | } |
297 | ||
9c90a61c | 298 | free(event); |
1e6d5322 | 299 | return rc; |
b7cece76 ACM |
300 | } |
301 | ||
8115d60c ACM |
302 | static int __event__synthesize_thread(union perf_event *comm_event, |
303 | union perf_event *mmap_event, | |
363b785f | 304 | union perf_event *fork_event, |
defd8d38 DA |
305 | pid_t pid, int full, |
306 | perf_event__handler_t process, | |
45694aa7 | 307 | struct perf_tool *tool, |
62605dc5 | 308 | struct machine *machine, bool mmap_data) |
234fbbf5 | 309 | { |
bfd66cc7 DZ |
310 | char filename[PATH_MAX]; |
311 | DIR *tasks; | |
312 | struct dirent dirent, *next; | |
313 | pid_t tgid; | |
314 | ||
315 | /* special case: only send one comm event using passed in pid */ | |
316 | if (!full) { | |
317 | tgid = perf_event__synthesize_comm(tool, comm_event, pid, | |
318 | process, machine); | |
319 | ||
320 | if (tgid == -1) | |
321 | return -1; | |
322 | ||
323 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
324 | process, machine, mmap_data); | |
325 | } | |
326 | ||
327 | if (machine__is_default_guest(machine)) | |
328 | return 0; | |
329 | ||
330 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", | |
331 | machine->root_dir, pid); | |
332 | ||
333 | tasks = opendir(filename); | |
334 | if (tasks == NULL) { | |
335 | pr_debug("couldn't open %s\n", filename); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
340 | char *end; | |
341 | int rc = 0; | |
342 | pid_t _pid; | |
343 | ||
344 | _pid = strtol(dirent.d_name, &end, 10); | |
345 | if (*end) | |
346 | continue; | |
347 | ||
348 | tgid = perf_event__synthesize_comm(tool, comm_event, _pid, | |
349 | process, machine); | |
350 | if (tgid == -1) | |
351 | return -1; | |
352 | ||
363b785f DZ |
353 | if (_pid == pid) { |
354 | /* process the parent's maps too */ | |
355 | rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
356 | process, machine, mmap_data); | |
357 | } else { | |
358 | /* only fork the tid's map, to save time */ | |
359 | rc = perf_event__synthesize_fork(tool, fork_event, _pid, tgid, | |
360 | process, machine); | |
361 | } | |
bfd66cc7 DZ |
362 | |
363 | if (rc) | |
364 | return rc; | |
365 | } | |
366 | ||
367 | closedir(tasks); | |
368 | return 0; | |
234fbbf5 ACM |
369 | } |
370 | ||
45694aa7 | 371 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 372 | struct thread_map *threads, |
7c940c18 | 373 | perf_event__handler_t process, |
62605dc5 ACM |
374 | struct machine *machine, |
375 | bool mmap_data) | |
9c90a61c | 376 | { |
363b785f | 377 | union perf_event *comm_event, *mmap_event, *fork_event; |
defd8d38 | 378 | int err = -1, thread, j; |
9c90a61c | 379 | |
743eb868 | 380 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
381 | if (comm_event == NULL) |
382 | goto out; | |
383 | ||
743eb868 | 384 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
385 | if (mmap_event == NULL) |
386 | goto out_free_comm; | |
387 | ||
363b785f DZ |
388 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
389 | if (fork_event == NULL) | |
390 | goto out_free_mmap; | |
391 | ||
401b8e13 ACM |
392 | err = 0; |
393 | for (thread = 0; thread < threads->nr; ++thread) { | |
394 | if (__event__synthesize_thread(comm_event, mmap_event, | |
363b785f | 395 | fork_event, |
defd8d38 | 396 | threads->map[thread], 0, |
62605dc5 ACM |
397 | process, tool, machine, |
398 | mmap_data)) { | |
401b8e13 ACM |
399 | err = -1; |
400 | break; | |
401 | } | |
defd8d38 DA |
402 | |
403 | /* | |
404 | * comm.pid is set to thread group id by | |
405 | * perf_event__synthesize_comm | |
406 | */ | |
407 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
408 | bool need_leader = true; | |
409 | ||
410 | /* is thread group leader in thread_map? */ | |
411 | for (j = 0; j < threads->nr; ++j) { | |
412 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
413 | need_leader = false; | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
418 | /* if not, generate events for it */ | |
419 | if (need_leader && | |
62605dc5 | 420 | __event__synthesize_thread(comm_event, mmap_event, |
363b785f | 421 | fork_event, |
62605dc5 ACM |
422 | comm_event->comm.pid, 0, |
423 | process, tool, machine, | |
424 | mmap_data)) { | |
defd8d38 DA |
425 | err = -1; |
426 | break; | |
427 | } | |
428 | } | |
401b8e13 | 429 | } |
363b785f DZ |
430 | free(fork_event); |
431 | out_free_mmap: | |
9c90a61c ACM |
432 | free(mmap_event); |
433 | out_free_comm: | |
434 | free(comm_event); | |
435 | out: | |
436 | return err; | |
437 | } | |
438 | ||
45694aa7 | 439 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 440 | perf_event__handler_t process, |
62605dc5 | 441 | struct machine *machine, bool mmap_data) |
234fbbf5 ACM |
442 | { |
443 | DIR *proc; | |
99563465 | 444 | char proc_path[PATH_MAX]; |
234fbbf5 | 445 | struct dirent dirent, *next; |
363b785f | 446 | union perf_event *comm_event, *mmap_event, *fork_event; |
9c90a61c ACM |
447 | int err = -1; |
448 | ||
743eb868 | 449 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
450 | if (comm_event == NULL) |
451 | goto out; | |
452 | ||
743eb868 | 453 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
454 | if (mmap_event == NULL) |
455 | goto out_free_comm; | |
234fbbf5 | 456 | |
363b785f DZ |
457 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
458 | if (fork_event == NULL) | |
459 | goto out_free_mmap; | |
460 | ||
c239c25a DY |
461 | if (machine__is_default_guest(machine)) |
462 | return 0; | |
463 | ||
99563465 DY |
464 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
465 | proc = opendir(proc_path); | |
466 | ||
9c90a61c | 467 | if (proc == NULL) |
363b785f | 468 | goto out_free_fork; |
234fbbf5 ACM |
469 | |
470 | while (!readdir_r(proc, &dirent, &next) && next) { | |
471 | char *end; | |
472 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
473 | ||
474 | if (*end) /* only interested in proper numerical dirents */ | |
475 | continue; | |
ba361c92 ACM |
476 | /* |
477 | * We may race with exiting thread, so don't stop just because | |
478 | * one thread couldn't be synthesized. | |
479 | */ | |
363b785f DZ |
480 | __event__synthesize_thread(comm_event, mmap_event, fork_event, pid, |
481 | 1, process, tool, machine, mmap_data); | |
234fbbf5 ACM |
482 | } |
483 | ||
9c90a61c | 484 | err = 0; |
1e6d5322 | 485 | closedir(proc); |
363b785f DZ |
486 | out_free_fork: |
487 | free(fork_event); | |
9c90a61c ACM |
488 | out_free_mmap: |
489 | free(mmap_event); | |
490 | out_free_comm: | |
491 | free(comm_event); | |
492 | out: | |
493 | return err; | |
234fbbf5 | 494 | } |
62daacb5 | 495 | |
56b03f3c ACM |
496 | struct process_symbol_args { |
497 | const char *name; | |
498 | u64 start; | |
499 | }; | |
500 | ||
3b01a413 | 501 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 502 | u64 start) |
56b03f3c ACM |
503 | { |
504 | struct process_symbol_args *args = arg; | |
505 | ||
881516eb ACM |
506 | /* |
507 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
508 | * an 'A' to the same address as "_stext". | |
509 | */ | |
510 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
511 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
512 | return 0; |
513 | ||
514 | args->start = start; | |
515 | return 1; | |
516 | } | |
517 | ||
29b596b5 AH |
518 | u64 kallsyms__get_function_start(const char *kallsyms_filename, |
519 | const char *symbol_name) | |
520 | { | |
521 | struct process_symbol_args args = { .name = symbol_name, }; | |
522 | ||
523 | if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) | |
524 | return 0; | |
525 | ||
526 | return args.start; | |
527 | } | |
528 | ||
45694aa7 | 529 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 530 | perf_event__handler_t process, |
0ae617be | 531 | struct machine *machine) |
56b03f3c ACM |
532 | { |
533 | size_t size; | |
0ae617be | 534 | const char *mmap_name; |
a1645ce1 ZY |
535 | char name_buff[PATH_MAX]; |
536 | struct map *map; | |
0ae617be | 537 | struct kmap *kmap; |
9c90a61c | 538 | int err; |
56b03f3c ACM |
539 | /* |
540 | * We should get this from /sys/kernel/sections/.text, but till that is | |
541 | * available use this, and after it is use this as a fallback for older | |
542 | * kernels. | |
543 | */ | |
8115d60c | 544 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 545 | machine->id_hdr_size)); |
9c90a61c ACM |
546 | if (event == NULL) { |
547 | pr_debug("Not enough memory synthesizing mmap event " | |
548 | "for kernel modules\n"); | |
549 | return -1; | |
550 | } | |
56b03f3c | 551 | |
48ea8f54 | 552 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 553 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
554 | /* |
555 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
556 | * see kernel/perf_event.c __perf_event_mmap | |
557 | */ | |
9c90a61c | 558 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 559 | } else { |
9c90a61c | 560 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
0b9e01a4 | 561 | } |
56b03f3c | 562 | |
23346f21 | 563 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
0ae617be | 564 | kmap = map__kmap(map); |
9c90a61c | 565 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
0ae617be | 566 | "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1; |
9ac3e487 | 567 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
568 | event->mmap.header.type = PERF_RECORD_MMAP; |
569 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 570 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
0ae617be | 571 | event->mmap.pgoff = kmap->ref_reloc_sym->addr; |
9c90a61c ACM |
572 | event->mmap.start = map->start; |
573 | event->mmap.len = map->end - event->mmap.start; | |
574 | event->mmap.pid = machine->pid; | |
575 | ||
45694aa7 | 576 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
577 | free(event); |
578 | ||
579 | return err; | |
56b03f3c ACM |
580 | } |
581 | ||
482ad897 ACM |
582 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
583 | { | |
584 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
585 | } | |
586 | ||
1d037ca1 | 587 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 588 | union perf_event *event, |
162f0bef | 589 | struct perf_sample *sample, |
743eb868 | 590 | struct machine *machine) |
62daacb5 | 591 | { |
162f0bef | 592 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
593 | } |
594 | ||
1d037ca1 | 595 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 596 | union perf_event *event, |
162f0bef | 597 | struct perf_sample *sample, |
b0a7d1a0 | 598 | struct machine *machine) |
62daacb5 | 599 | { |
162f0bef | 600 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 601 | } |
b7cece76 | 602 | |
482ad897 ACM |
603 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
604 | { | |
62605dc5 | 605 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 606 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
607 | event->mmap.len, event->mmap.pgoff, |
608 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
609 | event->mmap.filename); | |
482ad897 ACM |
610 | } |
611 | ||
5c5e854b SE |
612 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
613 | { | |
614 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
62605dc5 | 615 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c %s\n", |
5c5e854b SE |
616 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
617 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
618 | event->mmap2.min, event->mmap2.ino, | |
619 | event->mmap2.ino_generation, | |
62605dc5 | 620 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', |
5c5e854b SE |
621 | event->mmap2.filename); |
622 | } | |
623 | ||
b0a7d1a0 | 624 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 625 | union perf_event *event, |
162f0bef | 626 | struct perf_sample *sample, |
743eb868 | 627 | struct machine *machine) |
a1645ce1 | 628 | { |
162f0bef | 629 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
630 | } |
631 | ||
5c5e854b SE |
632 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
633 | union perf_event *event, | |
162f0bef | 634 | struct perf_sample *sample, |
5c5e854b SE |
635 | struct machine *machine) |
636 | { | |
162f0bef | 637 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
638 | } |
639 | ||
482ad897 ACM |
640 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
641 | { | |
642 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
643 | event->fork.pid, event->fork.tid, | |
644 | event->fork.ppid, event->fork.ptid); | |
645 | } | |
646 | ||
f62d3f0f | 647 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 648 | union perf_event *event, |
162f0bef | 649 | struct perf_sample *sample, |
f62d3f0f | 650 | struct machine *machine) |
62daacb5 | 651 | { |
162f0bef | 652 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 653 | } |
1ed091c4 | 654 | |
f62d3f0f ACM |
655 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
656 | union perf_event *event, | |
162f0bef | 657 | struct perf_sample *sample, |
f62d3f0f ACM |
658 | struct machine *machine) |
659 | { | |
162f0bef | 660 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
661 | } |
662 | ||
482ad897 ACM |
663 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
664 | { | |
665 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
666 | perf_event__name(event->header.type)); | |
667 | ||
668 | switch (event->header.type) { | |
669 | case PERF_RECORD_COMM: | |
670 | ret += perf_event__fprintf_comm(event, fp); | |
671 | break; | |
672 | case PERF_RECORD_FORK: | |
673 | case PERF_RECORD_EXIT: | |
674 | ret += perf_event__fprintf_task(event, fp); | |
675 | break; | |
676 | case PERF_RECORD_MMAP: | |
677 | ret += perf_event__fprintf_mmap(event, fp); | |
678 | break; | |
5c5e854b SE |
679 | case PERF_RECORD_MMAP2: |
680 | ret += perf_event__fprintf_mmap2(event, fp); | |
681 | break; | |
482ad897 ACM |
682 | default: |
683 | ret += fprintf(fp, "\n"); | |
684 | } | |
685 | ||
686 | return ret; | |
687 | } | |
688 | ||
b0a7d1a0 ACM |
689 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
690 | union perf_event *event, | |
162f0bef | 691 | struct perf_sample *sample, |
b0a7d1a0 | 692 | struct machine *machine) |
b83f920e | 693 | { |
162f0bef | 694 | return machine__process_event(machine, event, sample); |
b83f920e SD |
695 | } |
696 | ||
316c7136 | 697 | void thread__find_addr_map(struct thread *thread, |
743eb868 ACM |
698 | struct machine *machine, u8 cpumode, |
699 | enum map_type type, u64 addr, | |
326f59bf | 700 | struct addr_location *al) |
1ed091c4 | 701 | { |
316c7136 | 702 | struct map_groups *mg = &thread->mg; |
5b7ba82a | 703 | bool load_map = false; |
1ed091c4 | 704 | |
cc22e575 | 705 | al->machine = machine; |
316c7136 | 706 | al->thread = thread; |
1ed091c4 | 707 | al->addr = addr; |
a1645ce1 | 708 | al->cpumode = cpumode; |
b3cef7f6 | 709 | al->filtered = 0; |
1ed091c4 | 710 | |
743eb868 ACM |
711 | if (machine == NULL) { |
712 | al->map = NULL; | |
713 | return; | |
714 | } | |
715 | ||
a1645ce1 | 716 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 717 | al->level = 'k'; |
23346f21 | 718 | mg = &machine->kmaps; |
5b7ba82a | 719 | load_map = true; |
a1645ce1 | 720 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 721 | al->level = '.'; |
a1645ce1 ZY |
722 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
723 | al->level = 'g'; | |
23346f21 | 724 | mg = &machine->kmaps; |
5b7ba82a | 725 | load_map = true; |
fb50bb43 DY |
726 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
727 | al->level = 'u'; | |
a1645ce1 | 728 | } else { |
fb50bb43 | 729 | al->level = 'H'; |
1ed091c4 | 730 | al->map = NULL; |
a1645ce1 ZY |
731 | |
732 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
733 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
734 | !perf_guest) | |
b3cef7f6 | 735 | al->filtered |= (1 << HIST_FILTER__GUEST); |
a1645ce1 ZY |
736 | if ((cpumode == PERF_RECORD_MISC_USER || |
737 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
738 | !perf_host) | |
b3cef7f6 | 739 | al->filtered |= (1 << HIST_FILTER__HOST); |
a1645ce1 | 740 | |
1ed091c4 ACM |
741 | return; |
742 | } | |
743 | try_again: | |
9958e1f0 | 744 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
745 | if (al->map == NULL) { |
746 | /* | |
747 | * If this is outside of all known maps, and is a negative | |
748 | * address, try to look it up in the kernel dso, as it might be | |
749 | * a vsyscall or vdso (which executes in user-mode). | |
750 | * | |
751 | * XXX This is nasty, we should have a symbol list in the | |
752 | * "[vdso]" dso, but for now lets use the old trick of looking | |
753 | * in the whole kernel symbol list. | |
754 | */ | |
a1645ce1 | 755 | if ((long long)al->addr < 0 && |
6c6804fb | 756 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
757 | machine && mg != &machine->kmaps) { |
758 | mg = &machine->kmaps; | |
1ed091c4 ACM |
759 | goto try_again; |
760 | } | |
5b7ba82a AH |
761 | } else { |
762 | /* | |
763 | * Kernel maps might be changed when loading symbols so loading | |
764 | * must be done prior to using kernel maps. | |
765 | */ | |
766 | if (load_map) | |
326f59bf | 767 | map__load(al->map, machine->symbol_filter); |
1ed091c4 | 768 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 769 | } |
59ee68ec ACM |
770 | } |
771 | ||
743eb868 ACM |
772 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
773 | u8 cpumode, enum map_type type, u64 addr, | |
61710bde | 774 | struct addr_location *al) |
59ee68ec | 775 | { |
326f59bf | 776 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 777 | if (al->map != NULL) |
61710bde AH |
778 | al->sym = map__find_symbol(al->map, al->addr, |
779 | machine->symbol_filter); | |
59ee68ec ACM |
780 | else |
781 | al->sym = NULL; | |
1ed091c4 ACM |
782 | } |
783 | ||
8115d60c | 784 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 785 | struct machine *machine, |
8115d60c | 786 | struct addr_location *al, |
e44baa3e | 787 | struct perf_sample *sample) |
1ed091c4 | 788 | { |
8115d60c | 789 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
ef89325f AH |
790 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
791 | sample->pid); | |
41a37e20 | 792 | |
1ed091c4 ACM |
793 | if (thread == NULL) |
794 | return -1; | |
795 | ||
b9c5143a | 796 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 797 | /* |
743eb868 | 798 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
799 | * |
800 | * This should have happened earlier, when we processed the kernel MMAP | |
801 | * events, but for older perf.data files there was no such thing, so do | |
802 | * it now. | |
803 | */ | |
804 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
805 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
806 | machine__create_kernel_maps(machine); | |
1ed091c4 | 807 | |
743eb868 | 808 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
ef89325f | 809 | sample->ip, al); |
1ed091c4 ACM |
810 | dump_printf(" ...... dso: %s\n", |
811 | al->map ? al->map->dso->long_name : | |
812 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
466fa764 NK |
813 | |
814 | if (thread__is_filtered(thread)) | |
815 | al->filtered |= (1 << HIST_FILTER__THREAD); | |
816 | ||
96415e4d | 817 | al->sym = NULL; |
8d50e5b4 | 818 | al->cpu = sample->cpu; |
96415e4d ACM |
819 | |
820 | if (al->map) { | |
cb8f4e9a NK |
821 | struct dso *dso = al->map->dso; |
822 | ||
96415e4d | 823 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
824 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
825 | dso->short_name) || | |
826 | (dso->short_name != dso->long_name && | |
827 | strlist__has_entry(symbol_conf.dso_list, | |
b3cef7f6 NK |
828 | dso->long_name))))) { |
829 | al->filtered |= (1 << HIST_FILTER__DSO); | |
b3cef7f6 | 830 | } |
96415e4d | 831 | |
e44baa3e AH |
832 | al->sym = map__find_symbol(al->map, al->addr, |
833 | machine->symbol_filter); | |
96415e4d | 834 | } |
c410a338 | 835 | |
1500b93b FT |
836 | if (symbol_conf.sym_list && |
837 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
b3cef7f6 NK |
838 | al->sym->name))) { |
839 | al->filtered |= (1 << HIST_FILTER__SYMBOL); | |
b3cef7f6 | 840 | } |
c410a338 | 841 | |
c410a338 | 842 | return 0; |
1ed091c4 | 843 | } |