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" |
234fbbf5 | 10 | |
8115d60c | 11 | static const char *perf_event__names[] = { |
3cb6d154 FW |
12 | [0] = "TOTAL", |
13 | [PERF_RECORD_MMAP] = "MMAP", | |
14 | [PERF_RECORD_LOST] = "LOST", | |
15 | [PERF_RECORD_COMM] = "COMM", | |
16 | [PERF_RECORD_EXIT] = "EXIT", | |
17 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
18 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
19 | [PERF_RECORD_FORK] = "FORK", | |
20 | [PERF_RECORD_READ] = "READ", | |
21 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
22 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
23 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
24 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
25 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
26 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
27 | }; |
28 | ||
8115d60c | 29 | const char *perf_event__name(unsigned int id) |
3835bc00 | 30 | { |
8115d60c | 31 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 32 | return "INVALID"; |
8115d60c | 33 | if (!perf_event__names[id]) |
3835bc00 | 34 | return "UNKNOWN"; |
8115d60c | 35 | return perf_event__names[id]; |
3835bc00 TG |
36 | } |
37 | ||
8d50e5b4 | 38 | static struct perf_sample synth_sample = { |
640c03ce ACM |
39 | .pid = -1, |
40 | .tid = -1, | |
41 | .time = -1, | |
42 | .stream_id = -1, | |
43 | .cpu = -1, | |
44 | .period = 1, | |
45 | }; | |
46 | ||
f5faf726 | 47 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 48 | { |
234fbbf5 ACM |
49 | char filename[PATH_MAX]; |
50 | char bf[BUFSIZ]; | |
51 | FILE *fp; | |
52 | size_t size = 0; | |
f5faf726 | 53 | pid_t tgid = -1; |
234fbbf5 ACM |
54 | |
55 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
56 | ||
57 | fp = fopen(filename, "r"); | |
58 | if (fp == NULL) { | |
234fbbf5 ACM |
59 | pr_debug("couldn't open %s\n", filename); |
60 | return 0; | |
61 | } | |
62 | ||
f5faf726 | 63 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 64 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
65 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
66 | filename); | |
67 | break; | |
9c90a61c | 68 | } |
234fbbf5 ACM |
69 | |
70 | if (memcmp(bf, "Name:", 5) == 0) { | |
71 | char *name = bf + 5; | |
72 | while (*name && isspace(*name)) | |
73 | ++name; | |
74 | size = strlen(name) - 1; | |
f5faf726 DA |
75 | if (size >= len) |
76 | size = len - 1; | |
77 | memcpy(comm, name, size); | |
cfbd70c1 | 78 | comm[size] = '\0'; |
f5faf726 | 79 | |
234fbbf5 ACM |
80 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
81 | char *tgids = bf + 5; | |
82 | while (*tgids && isspace(*tgids)) | |
83 | ++tgids; | |
f5faf726 | 84 | tgid = atoi(tgids); |
234fbbf5 ACM |
85 | } |
86 | } | |
87 | ||
f5faf726 DA |
88 | fclose(fp); |
89 | ||
90 | return tgid; | |
91 | } | |
92 | ||
93 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
94 | union perf_event *event, pid_t pid, | |
95 | int full, | |
96 | perf_event__handler_t process, | |
97 | struct machine *machine) | |
98 | { | |
99 | char filename[PATH_MAX]; | |
100 | size_t size; | |
101 | DIR *tasks; | |
102 | struct dirent dirent, *next; | |
103 | pid_t tgid; | |
104 | ||
105 | memset(&event->comm, 0, sizeof(event->comm)); | |
106 | ||
107 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
108 | sizeof(event->comm.comm)); | |
109 | if (tgid < 0) | |
110 | goto out; | |
111 | ||
112 | event->comm.pid = tgid; | |
9c90a61c | 113 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
114 | |
115 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 116 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 117 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
118 | event->comm.header.size = (sizeof(event->comm) - |
119 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 120 | machine->id_hdr_size); |
234fbbf5 | 121 | if (!full) { |
9c90a61c | 122 | event->comm.tid = pid; |
234fbbf5 | 123 | |
1e6d5322 DA |
124 | if (process(tool, event, &synth_sample, machine) != 0) |
125 | return -1; | |
126 | ||
9c90a61c | 127 | goto out; |
234fbbf5 ACM |
128 | } |
129 | ||
130 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
131 | ||
132 | tasks = opendir(filename); | |
f5faf726 DA |
133 | if (tasks == NULL) { |
134 | pr_debug("couldn't open %s\n", filename); | |
135 | return 0; | |
136 | } | |
234fbbf5 ACM |
137 | |
138 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
139 | char *end; | |
140 | pid = strtol(dirent.d_name, &end, 10); | |
141 | if (*end) | |
142 | continue; | |
143 | ||
f5faf726 DA |
144 | /* already have tgid; jut want to update the comm */ |
145 | (void) perf_event__get_comm_tgid(pid, event->comm.comm, | |
146 | sizeof(event->comm.comm)); | |
147 | ||
148 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 149 | size = PERF_ALIGN(size, sizeof(u64)); |
f5faf726 DA |
150 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
151 | event->comm.header.size = (sizeof(event->comm) - | |
152 | (sizeof(event->comm.comm) - size) + | |
153 | machine->id_hdr_size); | |
154 | ||
9c90a61c | 155 | event->comm.tid = pid; |
234fbbf5 | 156 | |
1e6d5322 DA |
157 | if (process(tool, event, &synth_sample, machine) != 0) { |
158 | tgid = -1; | |
159 | break; | |
160 | } | |
234fbbf5 | 161 | } |
234fbbf5 | 162 | |
9c90a61c ACM |
163 | closedir(tasks); |
164 | out: | |
9c90a61c | 165 | return tgid; |
234fbbf5 ACM |
166 | } |
167 | ||
45694aa7 | 168 | static int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
d20deb64 | 169 | union perf_event *event, |
8115d60c ACM |
170 | pid_t pid, pid_t tgid, |
171 | perf_event__handler_t process, | |
743eb868 | 172 | struct machine *machine) |
234fbbf5 ACM |
173 | { |
174 | char filename[PATH_MAX]; | |
175 | FILE *fp; | |
1e6d5322 | 176 | int rc = 0; |
234fbbf5 ACM |
177 | |
178 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
179 | ||
180 | fp = fopen(filename, "r"); | |
181 | if (fp == NULL) { | |
182 | /* | |
183 | * We raced with a task exiting - just return: | |
184 | */ | |
185 | pr_debug("couldn't open %s\n", filename); | |
186 | return -1; | |
187 | } | |
188 | ||
9c90a61c ACM |
189 | event->header.type = PERF_RECORD_MMAP; |
190 | /* | |
191 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
192 | */ | |
193 | event->header.misc = PERF_RECORD_MISC_USER; | |
194 | ||
234fbbf5 ACM |
195 | while (1) { |
196 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
197 | int n; |
198 | size_t size; | |
199 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
200 | break; | |
201 | ||
202 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 203 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
204 | if (n < 0) |
205 | continue; | |
206 | pbf += n + 1; | |
9c90a61c | 207 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
208 | if (n < 0) |
209 | continue; | |
210 | pbf += n + 3; | |
211 | if (*pbf == 'x') { /* vm_exec */ | |
6a0e55d8 | 212 | char anonstr[] = "//anon\n"; |
234fbbf5 ACM |
213 | char *execname = strchr(bf, '/'); |
214 | ||
215 | /* Catch VDSO */ | |
216 | if (execname == NULL) | |
217 | execname = strstr(bf, "[vdso]"); | |
218 | ||
6a0e55d8 AB |
219 | /* Catch anonymous mmaps */ |
220 | if ((execname == NULL) && !strstr(bf, "[")) | |
221 | execname = anonstr; | |
222 | ||
234fbbf5 ACM |
223 | if (execname == NULL) |
224 | continue; | |
225 | ||
4af8b35d | 226 | pbf += 3; |
9c90a61c | 227 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 228 | |
234fbbf5 ACM |
229 | size = strlen(execname); |
230 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 231 | memcpy(event->mmap.filename, execname, size); |
9ac3e487 | 232 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
233 | event->mmap.len -= event->mmap.start; |
234 | event->mmap.header.size = (sizeof(event->mmap) - | |
235 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
236 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
237 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
238 | event->mmap.pid = tgid; |
239 | event->mmap.tid = pid; | |
240 | ||
1e6d5322 DA |
241 | if (process(tool, event, &synth_sample, machine) != 0) { |
242 | rc = -1; | |
243 | break; | |
244 | } | |
234fbbf5 ACM |
245 | } |
246 | } | |
247 | ||
248 | fclose(fp); | |
1e6d5322 | 249 | return rc; |
234fbbf5 ACM |
250 | } |
251 | ||
45694aa7 | 252 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 253 | perf_event__handler_t process, |
8115d60c | 254 | struct machine *machine) |
b7cece76 | 255 | { |
1e6d5322 | 256 | int rc = 0; |
b7cece76 | 257 | struct rb_node *nd; |
23346f21 | 258 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 259 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 260 | machine->id_hdr_size)); |
9c90a61c ACM |
261 | if (event == NULL) { |
262 | pr_debug("Not enough memory synthesizing mmap event " | |
263 | "for kernel modules\n"); | |
264 | return -1; | |
265 | } | |
266 | ||
267 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 268 | |
a1645ce1 ZY |
269 | /* |
270 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
271 | * __perf_event_mmap | |
272 | */ | |
23346f21 | 273 | if (machine__is_host(machine)) |
9c90a61c | 274 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 275 | else |
9c90a61c | 276 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
277 | |
278 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 279 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
280 | size_t size; |
281 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
282 | ||
283 | if (pos->dso->kernel) | |
284 | continue; | |
285 | ||
9ac3e487 | 286 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
287 | event->mmap.header.type = PERF_RECORD_MMAP; |
288 | event->mmap.header.size = (sizeof(event->mmap) - | |
289 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
290 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
291 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
292 | event->mmap.start = pos->start; |
293 | event->mmap.len = pos->end - pos->start; | |
294 | event->mmap.pid = machine->pid; | |
295 | ||
296 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 297 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
298 | if (process(tool, event, &synth_sample, machine) != 0) { |
299 | rc = -1; | |
300 | break; | |
301 | } | |
b7cece76 ACM |
302 | } |
303 | ||
9c90a61c | 304 | free(event); |
1e6d5322 | 305 | return rc; |
b7cece76 ACM |
306 | } |
307 | ||
8115d60c ACM |
308 | static int __event__synthesize_thread(union perf_event *comm_event, |
309 | union perf_event *mmap_event, | |
defd8d38 DA |
310 | pid_t pid, int full, |
311 | perf_event__handler_t process, | |
45694aa7 | 312 | struct perf_tool *tool, |
743eb868 | 313 | struct machine *machine) |
234fbbf5 | 314 | { |
defd8d38 | 315 | pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full, |
743eb868 | 316 | process, machine); |
234fbbf5 ACM |
317 | if (tgid == -1) |
318 | return -1; | |
45694aa7 | 319 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, |
743eb868 | 320 | process, machine); |
234fbbf5 ACM |
321 | } |
322 | ||
45694aa7 | 323 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 324 | struct thread_map *threads, |
7c940c18 | 325 | perf_event__handler_t process, |
743eb868 | 326 | struct machine *machine) |
9c90a61c | 327 | { |
8115d60c | 328 | union perf_event *comm_event, *mmap_event; |
defd8d38 | 329 | int err = -1, thread, j; |
9c90a61c | 330 | |
743eb868 | 331 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
332 | if (comm_event == NULL) |
333 | goto out; | |
334 | ||
743eb868 | 335 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
336 | if (mmap_event == NULL) |
337 | goto out_free_comm; | |
338 | ||
401b8e13 ACM |
339 | err = 0; |
340 | for (thread = 0; thread < threads->nr; ++thread) { | |
341 | if (__event__synthesize_thread(comm_event, mmap_event, | |
defd8d38 | 342 | threads->map[thread], 0, |
45694aa7 | 343 | process, tool, machine)) { |
401b8e13 ACM |
344 | err = -1; |
345 | break; | |
346 | } | |
defd8d38 DA |
347 | |
348 | /* | |
349 | * comm.pid is set to thread group id by | |
350 | * perf_event__synthesize_comm | |
351 | */ | |
352 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
353 | bool need_leader = true; | |
354 | ||
355 | /* is thread group leader in thread_map? */ | |
356 | for (j = 0; j < threads->nr; ++j) { | |
357 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
358 | need_leader = false; | |
359 | break; | |
360 | } | |
361 | } | |
362 | ||
363 | /* if not, generate events for it */ | |
364 | if (need_leader && | |
365 | __event__synthesize_thread(comm_event, | |
366 | mmap_event, | |
367 | comm_event->comm.pid, 0, | |
368 | process, tool, machine)) { | |
369 | err = -1; | |
370 | break; | |
371 | } | |
372 | } | |
401b8e13 | 373 | } |
9c90a61c ACM |
374 | free(mmap_event); |
375 | out_free_comm: | |
376 | free(comm_event); | |
377 | out: | |
378 | return err; | |
379 | } | |
380 | ||
45694aa7 | 381 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 382 | perf_event__handler_t process, |
743eb868 | 383 | struct machine *machine) |
234fbbf5 ACM |
384 | { |
385 | DIR *proc; | |
386 | struct dirent dirent, *next; | |
8115d60c | 387 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
388 | int err = -1; |
389 | ||
743eb868 | 390 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
391 | if (comm_event == NULL) |
392 | goto out; | |
393 | ||
743eb868 | 394 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
395 | if (mmap_event == NULL) |
396 | goto out_free_comm; | |
234fbbf5 ACM |
397 | |
398 | proc = opendir("/proc"); | |
9c90a61c ACM |
399 | if (proc == NULL) |
400 | goto out_free_mmap; | |
234fbbf5 ACM |
401 | |
402 | while (!readdir_r(proc, &dirent, &next) && next) { | |
403 | char *end; | |
404 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
405 | ||
406 | if (*end) /* only interested in proper numerical dirents */ | |
407 | continue; | |
408 | ||
1e6d5322 DA |
409 | if (__event__synthesize_thread(comm_event, mmap_event, pid, 1, |
410 | process, tool, machine) != 0) { | |
411 | err = -1; | |
412 | goto out_closedir; | |
413 | } | |
234fbbf5 ACM |
414 | } |
415 | ||
9c90a61c | 416 | err = 0; |
1e6d5322 DA |
417 | out_closedir: |
418 | closedir(proc); | |
9c90a61c ACM |
419 | out_free_mmap: |
420 | free(mmap_event); | |
421 | out_free_comm: | |
422 | free(comm_event); | |
423 | out: | |
424 | return err; | |
234fbbf5 | 425 | } |
62daacb5 | 426 | |
56b03f3c ACM |
427 | struct process_symbol_args { |
428 | const char *name; | |
429 | u64 start; | |
430 | }; | |
431 | ||
3b01a413 | 432 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 433 | u64 start) |
56b03f3c ACM |
434 | { |
435 | struct process_symbol_args *args = arg; | |
436 | ||
881516eb ACM |
437 | /* |
438 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
439 | * an 'A' to the same address as "_stext". | |
440 | */ | |
441 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
442 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
443 | return 0; |
444 | ||
445 | args->start = start; | |
446 | return 1; | |
447 | } | |
448 | ||
45694aa7 | 449 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 450 | perf_event__handler_t process, |
8115d60c ACM |
451 | struct machine *machine, |
452 | const char *symbol_name) | |
56b03f3c ACM |
453 | { |
454 | size_t size; | |
a1645ce1 ZY |
455 | const char *filename, *mmap_name; |
456 | char path[PATH_MAX]; | |
457 | char name_buff[PATH_MAX]; | |
458 | struct map *map; | |
9c90a61c | 459 | int err; |
56b03f3c ACM |
460 | /* |
461 | * We should get this from /sys/kernel/sections/.text, but till that is | |
462 | * available use this, and after it is use this as a fallback for older | |
463 | * kernels. | |
464 | */ | |
465 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c | 466 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 467 | machine->id_hdr_size)); |
9c90a61c ACM |
468 | if (event == NULL) { |
469 | pr_debug("Not enough memory synthesizing mmap event " | |
470 | "for kernel modules\n"); | |
471 | return -1; | |
472 | } | |
56b03f3c | 473 | |
48ea8f54 | 474 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 475 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
476 | /* |
477 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
478 | * see kernel/perf_event.c __perf_event_mmap | |
479 | */ | |
9c90a61c | 480 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
481 | filename = "/proc/kallsyms"; |
482 | } else { | |
9c90a61c | 483 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 484 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
485 | filename = (char *) symbol_conf.default_guest_kallsyms; |
486 | else { | |
23346f21 | 487 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
488 | filename = path; |
489 | } | |
490 | } | |
491 | ||
492 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
493 | return -ENOENT; |
494 | ||
23346f21 | 495 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 496 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 497 | "%s%s", mmap_name, symbol_name) + 1; |
9ac3e487 | 498 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
499 | event->mmap.header.type = PERF_RECORD_MMAP; |
500 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 501 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
9c90a61c ACM |
502 | event->mmap.pgoff = args.start; |
503 | event->mmap.start = map->start; | |
504 | event->mmap.len = map->end - event->mmap.start; | |
505 | event->mmap.pid = machine->pid; | |
506 | ||
45694aa7 | 507 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
508 | free(event); |
509 | ||
510 | return err; | |
56b03f3c ACM |
511 | } |
512 | ||
482ad897 ACM |
513 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
514 | { | |
515 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
516 | } | |
517 | ||
1d037ca1 | 518 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 519 | union perf_event *event, |
1d037ca1 | 520 | struct perf_sample *sample __maybe_unused, |
743eb868 | 521 | struct machine *machine) |
62daacb5 | 522 | { |
743eb868 | 523 | struct thread *thread = machine__findnew_thread(machine, event->comm.tid); |
62daacb5 | 524 | |
482ad897 ACM |
525 | if (dump_trace) |
526 | perf_event__fprintf_comm(event, stdout); | |
62daacb5 | 527 | |
d7603d51 | 528 | if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { |
62daacb5 ACM |
529 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
530 | return -1; | |
531 | } | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
1d037ca1 | 536 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 537 | union perf_event *event, |
1d037ca1 IT |
538 | struct perf_sample *sample __maybe_unused, |
539 | struct machine *machine __maybe_unused) | |
62daacb5 | 540 | { |
9486aa38 | 541 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c | 542 | event->lost.id, event->lost.lost); |
62daacb5 ACM |
543 | return 0; |
544 | } | |
545 | ||
8115d60c ACM |
546 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
547 | struct map **maps) | |
a1645ce1 | 548 | { |
8115d60c ACM |
549 | maps[MAP__FUNCTION]->start = event->mmap.start; |
550 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
551 | /* |
552 | * Be a bit paranoid here, some perf.data file came with | |
553 | * a zero sized synthesized MMAP event for the kernel. | |
554 | */ | |
555 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 556 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
557 | } |
558 | ||
1d037ca1 IT |
559 | static int perf_event__process_kernel_mmap(struct perf_tool *tool |
560 | __maybe_unused, | |
d20deb64 | 561 | union perf_event *event, |
743eb868 | 562 | struct machine *machine) |
62daacb5 | 563 | { |
56b03f3c | 564 | struct map *map; |
a1645ce1 | 565 | char kmmap_prefix[PATH_MAX]; |
a1645ce1 ZY |
566 | enum dso_kernel_type kernel_type; |
567 | bool is_kernel_mmap; | |
568 | ||
48ea8f54 | 569 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 570 | if (machine__is_host(machine)) |
a1645ce1 ZY |
571 | kernel_type = DSO_TYPE_KERNEL; |
572 | else | |
573 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 574 | |
8115d60c | 575 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 | 576 | kmmap_prefix, |
bf32c9eb | 577 | strlen(kmmap_prefix) - 1) == 0; |
8115d60c ACM |
578 | if (event->mmap.filename[0] == '/' || |
579 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 580 | |
a1645ce1 ZY |
581 | char short_module_name[1024]; |
582 | char *name, *dot; | |
b7cece76 | 583 | |
8115d60c ACM |
584 | if (event->mmap.filename[0] == '/') { |
585 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
586 | if (name == NULL) |
587 | goto out_problem; | |
588 | ||
589 | ++name; /* skip / */ | |
590 | dot = strrchr(name, '.'); | |
591 | if (dot == NULL) | |
592 | goto out_problem; | |
b7cece76 | 593 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 594 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 595 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 596 | } else |
8115d60c | 597 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 598 | |
8115d60c ACM |
599 | map = machine__new_module(machine, event->mmap.start, |
600 | event->mmap.filename); | |
a1645ce1 ZY |
601 | if (map == NULL) |
602 | goto out_problem; | |
603 | ||
604 | name = strdup(short_module_name); | |
605 | if (name == NULL) | |
606 | goto out_problem; | |
607 | ||
608 | map->dso->short_name = name; | |
6e406257 | 609 | map->dso->sname_alloc = 1; |
8115d60c | 610 | map->end = map->start + event->mmap.len; |
a1645ce1 | 611 | } else if (is_kernel_mmap) { |
8115d60c | 612 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
613 | strlen(kmmap_prefix)); |
614 | /* | |
615 | * Should be there already, from the build-id table in | |
616 | * the header. | |
617 | */ | |
23346f21 ACM |
618 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
619 | kmmap_prefix); | |
a1645ce1 ZY |
620 | if (kernel == NULL) |
621 | goto out_problem; | |
622 | ||
623 | kernel->kernel = kernel_type; | |
d28c6223 | 624 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
625 | goto out_problem; |
626 | ||
8115d60c | 627 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
ec80fde7 ACM |
628 | |
629 | /* | |
630 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
631 | * symbol. Effectively having zero here means that at record | |
632 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
633 | */ | |
634 | if (event->mmap.pgoff != 0) { | |
743eb868 ACM |
635 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, |
636 | symbol_name, | |
637 | event->mmap.pgoff); | |
ec80fde7 ACM |
638 | } |
639 | ||
23346f21 | 640 | if (machine__is_default_guest(machine)) { |
b7cece76 | 641 | /* |
a1645ce1 | 642 | * preload dso of guest kernel and modules |
b7cece76 | 643 | */ |
23346f21 ACM |
644 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
645 | NULL); | |
a1645ce1 ZY |
646 | } |
647 | } | |
648 | return 0; | |
649 | out_problem: | |
650 | return -1; | |
651 | } | |
b7cece76 | 652 | |
482ad897 ACM |
653 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
654 | { | |
655 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", | |
656 | event->mmap.pid, event->mmap.tid, event->mmap.start, | |
657 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
658 | } | |
659 | ||
45694aa7 | 660 | int perf_event__process_mmap(struct perf_tool *tool, |
d20deb64 | 661 | union perf_event *event, |
1d037ca1 | 662 | struct perf_sample *sample __maybe_unused, |
743eb868 | 663 | struct machine *machine) |
a1645ce1 | 664 | { |
a1645ce1 ZY |
665 | struct thread *thread; |
666 | struct map *map; | |
8115d60c | 667 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 668 | int ret = 0; |
b7cece76 | 669 | |
482ad897 ACM |
670 | if (dump_trace) |
671 | perf_event__fprintf_mmap(event, stdout); | |
a1645ce1 ZY |
672 | |
673 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
674 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
45694aa7 | 675 | ret = perf_event__process_kernel_mmap(tool, event, machine); |
a1645ce1 ZY |
676 | if (ret < 0) |
677 | goto out_problem; | |
56b03f3c ACM |
678 | return 0; |
679 | } | |
680 | ||
743eb868 | 681 | thread = machine__findnew_thread(machine, event->mmap.pid); |
d65a458b ACM |
682 | if (thread == NULL) |
683 | goto out_problem; | |
8115d60c ACM |
684 | map = map__new(&machine->user_dsos, event->mmap.start, |
685 | event->mmap.len, event->mmap.pgoff, | |
686 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 687 | MAP__FUNCTION); |
d65a458b | 688 | if (map == NULL) |
b7cece76 ACM |
689 | goto out_problem; |
690 | ||
691 | thread__insert_map(thread, map); | |
692 | return 0; | |
62daacb5 | 693 | |
b7cece76 ACM |
694 | out_problem: |
695 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
696 | return 0; |
697 | } | |
698 | ||
482ad897 ACM |
699 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
700 | { | |
701 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
702 | event->fork.pid, event->fork.tid, | |
703 | event->fork.ppid, event->fork.ptid); | |
704 | } | |
705 | ||
f62d3f0f | 706 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 707 | union perf_event *event, |
1d037ca1 | 708 | struct perf_sample *sample __maybe_unused, |
f62d3f0f | 709 | struct machine *machine) |
62daacb5 | 710 | { |
743eb868 ACM |
711 | struct thread *thread = machine__findnew_thread(machine, event->fork.tid); |
712 | struct thread *parent = machine__findnew_thread(machine, event->fork.ptid); | |
62daacb5 | 713 | |
482ad897 ACM |
714 | if (dump_trace) |
715 | perf_event__fprintf_task(event, stdout); | |
62daacb5 | 716 | |
62daacb5 ACM |
717 | if (thread == NULL || parent == NULL || |
718 | thread__fork(thread, parent) < 0) { | |
719 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
720 | return -1; | |
721 | } | |
722 | ||
723 | return 0; | |
724 | } | |
1ed091c4 | 725 | |
f62d3f0f ACM |
726 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
727 | union perf_event *event, | |
728 | struct perf_sample *sample __maybe_unused, | |
729 | struct machine *machine) | |
730 | { | |
731 | struct thread *thread = machine__find_thread(machine, event->fork.tid); | |
732 | ||
733 | if (dump_trace) | |
734 | perf_event__fprintf_task(event, stdout); | |
735 | ||
736 | if (thread != NULL) | |
737 | machine__remove_thread(machine, thread); | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
482ad897 ACM |
742 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
743 | { | |
744 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
745 | perf_event__name(event->header.type)); | |
746 | ||
747 | switch (event->header.type) { | |
748 | case PERF_RECORD_COMM: | |
749 | ret += perf_event__fprintf_comm(event, fp); | |
750 | break; | |
751 | case PERF_RECORD_FORK: | |
752 | case PERF_RECORD_EXIT: | |
753 | ret += perf_event__fprintf_task(event, fp); | |
754 | break; | |
755 | case PERF_RECORD_MMAP: | |
756 | ret += perf_event__fprintf_mmap(event, fp); | |
757 | break; | |
758 | default: | |
759 | ret += fprintf(fp, "\n"); | |
760 | } | |
761 | ||
762 | return ret; | |
763 | } | |
764 | ||
45694aa7 | 765 | int perf_event__process(struct perf_tool *tool, union perf_event *event, |
743eb868 | 766 | struct perf_sample *sample, struct machine *machine) |
b83f920e SD |
767 | { |
768 | switch (event->header.type) { | |
769 | case PERF_RECORD_COMM: | |
45694aa7 | 770 | perf_event__process_comm(tool, event, sample, machine); |
b83f920e SD |
771 | break; |
772 | case PERF_RECORD_MMAP: | |
45694aa7 | 773 | perf_event__process_mmap(tool, event, sample, machine); |
b83f920e SD |
774 | break; |
775 | case PERF_RECORD_FORK: | |
f62d3f0f ACM |
776 | perf_event__process_fork(tool, event, sample, machine); |
777 | break; | |
b83f920e | 778 | case PERF_RECORD_EXIT: |
f62d3f0f | 779 | perf_event__process_exit(tool, event, sample, machine); |
b83f920e | 780 | break; |
ef2bf6d0 | 781 | case PERF_RECORD_LOST: |
45694aa7 | 782 | perf_event__process_lost(tool, event, sample, machine); |
b83f920e SD |
783 | default: |
784 | break; | |
785 | } | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
59ee68ec | 790 | void thread__find_addr_map(struct thread *self, |
743eb868 ACM |
791 | struct machine *machine, u8 cpumode, |
792 | enum map_type type, u64 addr, | |
59ee68ec | 793 | struct addr_location *al) |
1ed091c4 | 794 | { |
9958e1f0 | 795 | struct map_groups *mg = &self->mg; |
1ed091c4 | 796 | |
9958e1f0 | 797 | al->thread = self; |
1ed091c4 | 798 | al->addr = addr; |
a1645ce1 ZY |
799 | al->cpumode = cpumode; |
800 | al->filtered = false; | |
1ed091c4 | 801 | |
743eb868 ACM |
802 | if (machine == NULL) { |
803 | al->map = NULL; | |
804 | return; | |
805 | } | |
806 | ||
a1645ce1 | 807 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 808 | al->level = 'k'; |
23346f21 | 809 | mg = &machine->kmaps; |
a1645ce1 | 810 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 811 | al->level = '.'; |
a1645ce1 ZY |
812 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
813 | al->level = 'g'; | |
23346f21 | 814 | mg = &machine->kmaps; |
a1645ce1 ZY |
815 | } else { |
816 | /* | |
817 | * 'u' means guest os user space. | |
818 | * TODO: We don't support guest user space. Might support late. | |
819 | */ | |
820 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
821 | al->level = 'u'; | |
822 | else | |
823 | al->level = 'H'; | |
1ed091c4 | 824 | al->map = NULL; |
a1645ce1 ZY |
825 | |
826 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
827 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
828 | !perf_guest) | |
829 | al->filtered = true; | |
830 | if ((cpumode == PERF_RECORD_MISC_USER || | |
831 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
832 | !perf_host) | |
833 | al->filtered = true; | |
834 | ||
1ed091c4 ACM |
835 | return; |
836 | } | |
837 | try_again: | |
9958e1f0 | 838 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
839 | if (al->map == NULL) { |
840 | /* | |
841 | * If this is outside of all known maps, and is a negative | |
842 | * address, try to look it up in the kernel dso, as it might be | |
843 | * a vsyscall or vdso (which executes in user-mode). | |
844 | * | |
845 | * XXX This is nasty, we should have a symbol list in the | |
846 | * "[vdso]" dso, but for now lets use the old trick of looking | |
847 | * in the whole kernel symbol list. | |
848 | */ | |
a1645ce1 | 849 | if ((long long)al->addr < 0 && |
6c6804fb | 850 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
851 | machine && mg != &machine->kmaps) { |
852 | mg = &machine->kmaps; | |
1ed091c4 ACM |
853 | goto try_again; |
854 | } | |
59ee68ec | 855 | } else |
1ed091c4 | 856 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
857 | } |
858 | ||
743eb868 ACM |
859 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
860 | u8 cpumode, enum map_type type, u64 addr, | |
59ee68ec ACM |
861 | struct addr_location *al, |
862 | symbol_filter_t filter) | |
863 | { | |
743eb868 | 864 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 865 | if (al->map != NULL) |
9de89fe7 | 866 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
867 | else |
868 | al->sym = NULL; | |
1ed091c4 ACM |
869 | } |
870 | ||
8115d60c | 871 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 872 | struct machine *machine, |
8115d60c ACM |
873 | struct addr_location *al, |
874 | struct perf_sample *sample, | |
875 | symbol_filter_t filter) | |
1ed091c4 | 876 | { |
8115d60c | 877 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
743eb868 | 878 | struct thread *thread = machine__findnew_thread(machine, event->ip.pid); |
41a37e20 | 879 | |
1ed091c4 ACM |
880 | if (thread == NULL) |
881 | return -1; | |
882 | ||
c410a338 ACM |
883 | if (symbol_conf.comm_list && |
884 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
885 | goto out_filtered; | |
886 | ||
1ed091c4 | 887 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 | 888 | /* |
743eb868 | 889 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
890 | * |
891 | * This should have happened earlier, when we processed the kernel MMAP | |
892 | * events, but for older perf.data files there was no such thing, so do | |
893 | * it now. | |
894 | */ | |
895 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
896 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
897 | machine__create_kernel_maps(machine); | |
1ed091c4 | 898 | |
743eb868 ACM |
899 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
900 | event->ip.ip, al); | |
1ed091c4 ACM |
901 | dump_printf(" ...... dso: %s\n", |
902 | al->map ? al->map->dso->long_name : | |
903 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 904 | al->sym = NULL; |
8d50e5b4 | 905 | al->cpu = sample->cpu; |
96415e4d ACM |
906 | |
907 | if (al->map) { | |
cb8f4e9a NK |
908 | struct dso *dso = al->map->dso; |
909 | ||
96415e4d | 910 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
911 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
912 | dso->short_name) || | |
913 | (dso->short_name != dso->long_name && | |
914 | strlist__has_entry(symbol_conf.dso_list, | |
915 | dso->long_name))))) | |
96415e4d | 916 | goto out_filtered; |
96415e4d ACM |
917 | |
918 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
919 | } | |
c410a338 | 920 | |
1500b93b FT |
921 | if (symbol_conf.sym_list && |
922 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
923 | al->sym->name))) | |
c410a338 ACM |
924 | goto out_filtered; |
925 | ||
c410a338 ACM |
926 | return 0; |
927 | ||
928 | out_filtered: | |
929 | al->filtered = true; | |
1ed091c4 ACM |
930 | return 0; |
931 | } |