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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" | |
c410a338 | 4 | #include "sort.h" |
234fbbf5 | 5 | #include "string.h" |
c410a338 | 6 | #include "strlist.h" |
62daacb5 | 7 | #include "thread.h" |
7c940c18 | 8 | #include "thread_map.h" |
234fbbf5 | 9 | |
8115d60c | 10 | static const char *perf_event__names[] = { |
3cb6d154 FW |
11 | [0] = "TOTAL", |
12 | [PERF_RECORD_MMAP] = "MMAP", | |
13 | [PERF_RECORD_LOST] = "LOST", | |
14 | [PERF_RECORD_COMM] = "COMM", | |
15 | [PERF_RECORD_EXIT] = "EXIT", | |
16 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
17 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
18 | [PERF_RECORD_FORK] = "FORK", | |
19 | [PERF_RECORD_READ] = "READ", | |
20 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
21 | [PERF_RECORD_HEADER_ATTR] = "ATTR", | |
22 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
23 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
24 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
25 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
c8446b9b ACM |
26 | }; |
27 | ||
8115d60c | 28 | const char *perf_event__name(unsigned int id) |
3835bc00 | 29 | { |
8115d60c | 30 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 31 | return "INVALID"; |
8115d60c | 32 | if (!perf_event__names[id]) |
3835bc00 | 33 | return "UNKNOWN"; |
8115d60c | 34 | return perf_event__names[id]; |
3835bc00 TG |
35 | } |
36 | ||
8d50e5b4 | 37 | static struct perf_sample synth_sample = { |
640c03ce ACM |
38 | .pid = -1, |
39 | .tid = -1, | |
40 | .time = -1, | |
41 | .stream_id = -1, | |
42 | .cpu = -1, | |
43 | .period = 1, | |
44 | }; | |
45 | ||
f5faf726 | 46 | static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len) |
234fbbf5 | 47 | { |
234fbbf5 ACM |
48 | char filename[PATH_MAX]; |
49 | char bf[BUFSIZ]; | |
50 | FILE *fp; | |
51 | size_t size = 0; | |
f5faf726 | 52 | pid_t tgid = -1; |
234fbbf5 ACM |
53 | |
54 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
55 | ||
56 | fp = fopen(filename, "r"); | |
57 | if (fp == NULL) { | |
234fbbf5 ACM |
58 | pr_debug("couldn't open %s\n", filename); |
59 | return 0; | |
60 | } | |
61 | ||
f5faf726 | 62 | while (!comm[0] || (tgid < 0)) { |
9c90a61c | 63 | if (fgets(bf, sizeof(bf), fp) == NULL) { |
f5faf726 DA |
64 | pr_warning("couldn't get COMM and pgid, malformed %s\n", |
65 | filename); | |
66 | break; | |
9c90a61c | 67 | } |
234fbbf5 ACM |
68 | |
69 | if (memcmp(bf, "Name:", 5) == 0) { | |
70 | char *name = bf + 5; | |
71 | while (*name && isspace(*name)) | |
72 | ++name; | |
73 | size = strlen(name) - 1; | |
f5faf726 DA |
74 | if (size >= len) |
75 | size = len - 1; | |
76 | memcpy(comm, name, size); | |
cfbd70c1 | 77 | comm[size] = '\0'; |
f5faf726 | 78 | |
234fbbf5 ACM |
79 | } else if (memcmp(bf, "Tgid:", 5) == 0) { |
80 | char *tgids = bf + 5; | |
81 | while (*tgids && isspace(*tgids)) | |
82 | ++tgids; | |
f5faf726 | 83 | tgid = atoi(tgids); |
234fbbf5 ACM |
84 | } |
85 | } | |
86 | ||
f5faf726 DA |
87 | fclose(fp); |
88 | ||
89 | return tgid; | |
90 | } | |
91 | ||
92 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
93 | union perf_event *event, pid_t pid, | |
94 | int full, | |
95 | perf_event__handler_t process, | |
96 | struct machine *machine) | |
97 | { | |
98 | char filename[PATH_MAX]; | |
99 | size_t size; | |
100 | DIR *tasks; | |
101 | struct dirent dirent, *next; | |
102 | pid_t tgid; | |
103 | ||
104 | memset(&event->comm, 0, sizeof(event->comm)); | |
105 | ||
106 | tgid = perf_event__get_comm_tgid(pid, event->comm.comm, | |
107 | sizeof(event->comm.comm)); | |
108 | if (tgid < 0) | |
109 | goto out; | |
110 | ||
111 | event->comm.pid = tgid; | |
9c90a61c | 112 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
113 | |
114 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 115 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 116 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
117 | event->comm.header.size = (sizeof(event->comm) - |
118 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 119 | machine->id_hdr_size); |
234fbbf5 | 120 | if (!full) { |
9c90a61c | 121 | event->comm.tid = pid; |
234fbbf5 | 122 | |
1e6d5322 DA |
123 | if (process(tool, event, &synth_sample, machine) != 0) |
124 | return -1; | |
125 | ||
9c90a61c | 126 | goto out; |
234fbbf5 ACM |
127 | } |
128 | ||
129 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
130 | ||
131 | tasks = opendir(filename); | |
f5faf726 DA |
132 | if (tasks == NULL) { |
133 | pr_debug("couldn't open %s\n", filename); | |
134 | return 0; | |
135 | } | |
234fbbf5 ACM |
136 | |
137 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
138 | char *end; | |
139 | pid = strtol(dirent.d_name, &end, 10); | |
140 | if (*end) | |
141 | continue; | |
142 | ||
f5faf726 DA |
143 | /* already have tgid; jut want to update the comm */ |
144 | (void) perf_event__get_comm_tgid(pid, event->comm.comm, | |
145 | sizeof(event->comm.comm)); | |
146 | ||
147 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 148 | size = PERF_ALIGN(size, sizeof(u64)); |
f5faf726 DA |
149 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
150 | event->comm.header.size = (sizeof(event->comm) - | |
151 | (sizeof(event->comm.comm) - size) + | |
152 | machine->id_hdr_size); | |
153 | ||
9c90a61c | 154 | event->comm.tid = pid; |
234fbbf5 | 155 | |
1e6d5322 DA |
156 | if (process(tool, event, &synth_sample, machine) != 0) { |
157 | tgid = -1; | |
158 | break; | |
159 | } | |
234fbbf5 | 160 | } |
234fbbf5 | 161 | |
9c90a61c ACM |
162 | closedir(tasks); |
163 | out: | |
9c90a61c | 164 | return tgid; |
234fbbf5 ACM |
165 | } |
166 | ||
45694aa7 | 167 | static int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
d20deb64 | 168 | union perf_event *event, |
8115d60c ACM |
169 | pid_t pid, pid_t tgid, |
170 | perf_event__handler_t process, | |
743eb868 | 171 | struct machine *machine) |
234fbbf5 ACM |
172 | { |
173 | char filename[PATH_MAX]; | |
174 | FILE *fp; | |
1e6d5322 | 175 | int rc = 0; |
234fbbf5 ACM |
176 | |
177 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
178 | ||
179 | fp = fopen(filename, "r"); | |
180 | if (fp == NULL) { | |
181 | /* | |
182 | * We raced with a task exiting - just return: | |
183 | */ | |
184 | pr_debug("couldn't open %s\n", filename); | |
185 | return -1; | |
186 | } | |
187 | ||
9c90a61c ACM |
188 | event->header.type = PERF_RECORD_MMAP; |
189 | /* | |
190 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
191 | */ | |
192 | event->header.misc = PERF_RECORD_MISC_USER; | |
193 | ||
234fbbf5 ACM |
194 | while (1) { |
195 | char bf[BUFSIZ], *pbf = bf; | |
234fbbf5 ACM |
196 | int n; |
197 | size_t size; | |
198 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
199 | break; | |
200 | ||
201 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
9c90a61c | 202 | n = hex2u64(pbf, &event->mmap.start); |
234fbbf5 ACM |
203 | if (n < 0) |
204 | continue; | |
205 | pbf += n + 1; | |
9c90a61c | 206 | n = hex2u64(pbf, &event->mmap.len); |
234fbbf5 ACM |
207 | if (n < 0) |
208 | continue; | |
209 | pbf += n + 3; | |
210 | if (*pbf == 'x') { /* vm_exec */ | |
6a0e55d8 | 211 | char anonstr[] = "//anon\n"; |
234fbbf5 ACM |
212 | char *execname = strchr(bf, '/'); |
213 | ||
214 | /* Catch VDSO */ | |
215 | if (execname == NULL) | |
216 | execname = strstr(bf, "[vdso]"); | |
217 | ||
6a0e55d8 AB |
218 | /* Catch anonymous mmaps */ |
219 | if ((execname == NULL) && !strstr(bf, "[")) | |
220 | execname = anonstr; | |
221 | ||
234fbbf5 ACM |
222 | if (execname == NULL) |
223 | continue; | |
224 | ||
4af8b35d | 225 | pbf += 3; |
9c90a61c | 226 | n = hex2u64(pbf, &event->mmap.pgoff); |
4af8b35d | 227 | |
234fbbf5 ACM |
228 | size = strlen(execname); |
229 | execname[size - 1] = '\0'; /* Remove \n */ | |
9c90a61c | 230 | memcpy(event->mmap.filename, execname, size); |
9ac3e487 | 231 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
232 | event->mmap.len -= event->mmap.start; |
233 | event->mmap.header.size = (sizeof(event->mmap) - | |
234 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
235 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
236 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
237 | event->mmap.pid = tgid; |
238 | event->mmap.tid = pid; | |
239 | ||
1e6d5322 DA |
240 | if (process(tool, event, &synth_sample, machine) != 0) { |
241 | rc = -1; | |
242 | break; | |
243 | } | |
234fbbf5 ACM |
244 | } |
245 | } | |
246 | ||
247 | fclose(fp); | |
1e6d5322 | 248 | return rc; |
234fbbf5 ACM |
249 | } |
250 | ||
45694aa7 | 251 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 252 | perf_event__handler_t process, |
8115d60c | 253 | struct machine *machine) |
b7cece76 | 254 | { |
1e6d5322 | 255 | int rc = 0; |
b7cece76 | 256 | struct rb_node *nd; |
23346f21 | 257 | struct map_groups *kmaps = &machine->kmaps; |
8115d60c | 258 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 259 | machine->id_hdr_size)); |
9c90a61c ACM |
260 | if (event == NULL) { |
261 | pr_debug("Not enough memory synthesizing mmap event " | |
262 | "for kernel modules\n"); | |
263 | return -1; | |
264 | } | |
265 | ||
266 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 267 | |
a1645ce1 ZY |
268 | /* |
269 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
270 | * __perf_event_mmap | |
271 | */ | |
23346f21 | 272 | if (machine__is_host(machine)) |
9c90a61c | 273 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 274 | else |
9c90a61c | 275 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 ZY |
276 | |
277 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 | 278 | nd; nd = rb_next(nd)) { |
b7cece76 ACM |
279 | size_t size; |
280 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
281 | ||
282 | if (pos->dso->kernel) | |
283 | continue; | |
284 | ||
9ac3e487 | 285 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
286 | event->mmap.header.type = PERF_RECORD_MMAP; |
287 | event->mmap.header.size = (sizeof(event->mmap) - | |
288 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
289 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
290 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
291 | event->mmap.start = pos->start; |
292 | event->mmap.len = pos->end - pos->start; | |
293 | event->mmap.pid = machine->pid; | |
294 | ||
295 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 296 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
297 | if (process(tool, event, &synth_sample, machine) != 0) { |
298 | rc = -1; | |
299 | break; | |
300 | } | |
b7cece76 ACM |
301 | } |
302 | ||
9c90a61c | 303 | free(event); |
1e6d5322 | 304 | return rc; |
b7cece76 ACM |
305 | } |
306 | ||
8115d60c ACM |
307 | static int __event__synthesize_thread(union perf_event *comm_event, |
308 | union perf_event *mmap_event, | |
defd8d38 DA |
309 | pid_t pid, int full, |
310 | perf_event__handler_t process, | |
45694aa7 | 311 | struct perf_tool *tool, |
743eb868 | 312 | struct machine *machine) |
234fbbf5 | 313 | { |
defd8d38 | 314 | pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full, |
743eb868 | 315 | process, machine); |
234fbbf5 ACM |
316 | if (tgid == -1) |
317 | return -1; | |
45694aa7 | 318 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, |
743eb868 | 319 | process, machine); |
234fbbf5 ACM |
320 | } |
321 | ||
45694aa7 | 322 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 323 | struct thread_map *threads, |
7c940c18 | 324 | perf_event__handler_t process, |
743eb868 | 325 | struct machine *machine) |
9c90a61c | 326 | { |
8115d60c | 327 | union perf_event *comm_event, *mmap_event; |
defd8d38 | 328 | int err = -1, thread, j; |
9c90a61c | 329 | |
743eb868 | 330 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
331 | if (comm_event == NULL) |
332 | goto out; | |
333 | ||
743eb868 | 334 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
335 | if (mmap_event == NULL) |
336 | goto out_free_comm; | |
337 | ||
401b8e13 ACM |
338 | err = 0; |
339 | for (thread = 0; thread < threads->nr; ++thread) { | |
340 | if (__event__synthesize_thread(comm_event, mmap_event, | |
defd8d38 | 341 | threads->map[thread], 0, |
45694aa7 | 342 | process, tool, machine)) { |
401b8e13 ACM |
343 | err = -1; |
344 | break; | |
345 | } | |
defd8d38 DA |
346 | |
347 | /* | |
348 | * comm.pid is set to thread group id by | |
349 | * perf_event__synthesize_comm | |
350 | */ | |
351 | if ((int) comm_event->comm.pid != threads->map[thread]) { | |
352 | bool need_leader = true; | |
353 | ||
354 | /* is thread group leader in thread_map? */ | |
355 | for (j = 0; j < threads->nr; ++j) { | |
356 | if ((int) comm_event->comm.pid == threads->map[j]) { | |
357 | need_leader = false; | |
358 | break; | |
359 | } | |
360 | } | |
361 | ||
362 | /* if not, generate events for it */ | |
363 | if (need_leader && | |
364 | __event__synthesize_thread(comm_event, | |
365 | mmap_event, | |
366 | comm_event->comm.pid, 0, | |
367 | process, tool, machine)) { | |
368 | err = -1; | |
369 | break; | |
370 | } | |
371 | } | |
401b8e13 | 372 | } |
9c90a61c ACM |
373 | free(mmap_event); |
374 | out_free_comm: | |
375 | free(comm_event); | |
376 | out: | |
377 | return err; | |
378 | } | |
379 | ||
45694aa7 | 380 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 381 | perf_event__handler_t process, |
743eb868 | 382 | struct machine *machine) |
234fbbf5 ACM |
383 | { |
384 | DIR *proc; | |
385 | struct dirent dirent, *next; | |
8115d60c | 386 | union perf_event *comm_event, *mmap_event; |
9c90a61c ACM |
387 | int err = -1; |
388 | ||
743eb868 | 389 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
390 | if (comm_event == NULL) |
391 | goto out; | |
392 | ||
743eb868 | 393 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
394 | if (mmap_event == NULL) |
395 | goto out_free_comm; | |
234fbbf5 ACM |
396 | |
397 | proc = opendir("/proc"); | |
9c90a61c ACM |
398 | if (proc == NULL) |
399 | goto out_free_mmap; | |
234fbbf5 ACM |
400 | |
401 | while (!readdir_r(proc, &dirent, &next) && next) { | |
402 | char *end; | |
403 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
404 | ||
405 | if (*end) /* only interested in proper numerical dirents */ | |
406 | continue; | |
407 | ||
1e6d5322 DA |
408 | if (__event__synthesize_thread(comm_event, mmap_event, pid, 1, |
409 | process, tool, machine) != 0) { | |
410 | err = -1; | |
411 | goto out_closedir; | |
412 | } | |
234fbbf5 ACM |
413 | } |
414 | ||
9c90a61c | 415 | err = 0; |
1e6d5322 DA |
416 | out_closedir: |
417 | closedir(proc); | |
9c90a61c ACM |
418 | out_free_mmap: |
419 | free(mmap_event); | |
420 | out_free_comm: | |
421 | free(comm_event); | |
422 | out: | |
423 | return err; | |
234fbbf5 | 424 | } |
62daacb5 | 425 | |
56b03f3c ACM |
426 | struct process_symbol_args { |
427 | const char *name; | |
428 | u64 start; | |
429 | }; | |
430 | ||
3b01a413 | 431 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 432 | u64 start) |
56b03f3c ACM |
433 | { |
434 | struct process_symbol_args *args = arg; | |
435 | ||
881516eb ACM |
436 | /* |
437 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
438 | * an 'A' to the same address as "_stext". | |
439 | */ | |
440 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
441 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
442 | return 0; |
443 | ||
444 | args->start = start; | |
445 | return 1; | |
446 | } | |
447 | ||
45694aa7 | 448 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 449 | perf_event__handler_t process, |
8115d60c ACM |
450 | struct machine *machine, |
451 | const char *symbol_name) | |
56b03f3c ACM |
452 | { |
453 | size_t size; | |
a1645ce1 ZY |
454 | const char *filename, *mmap_name; |
455 | char path[PATH_MAX]; | |
456 | char name_buff[PATH_MAX]; | |
457 | struct map *map; | |
9c90a61c | 458 | int err; |
56b03f3c ACM |
459 | /* |
460 | * We should get this from /sys/kernel/sections/.text, but till that is | |
461 | * available use this, and after it is use this as a fallback for older | |
462 | * kernels. | |
463 | */ | |
464 | struct process_symbol_args args = { .name = symbol_name, }; | |
8115d60c | 465 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 466 | machine->id_hdr_size)); |
9c90a61c ACM |
467 | if (event == NULL) { |
468 | pr_debug("Not enough memory synthesizing mmap event " | |
469 | "for kernel modules\n"); | |
470 | return -1; | |
471 | } | |
56b03f3c | 472 | |
48ea8f54 | 473 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 474 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
475 | /* |
476 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
477 | * see kernel/perf_event.c __perf_event_mmap | |
478 | */ | |
9c90a61c | 479 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 ZY |
480 | filename = "/proc/kallsyms"; |
481 | } else { | |
9c90a61c | 482 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
23346f21 | 483 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
484 | filename = (char *) symbol_conf.default_guest_kallsyms; |
485 | else { | |
23346f21 | 486 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
487 | filename = path; |
488 | } | |
489 | } | |
490 | ||
491 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
492 | return -ENOENT; |
493 | ||
23346f21 | 494 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
9c90a61c | 495 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
a1645ce1 | 496 | "%s%s", mmap_name, symbol_name) + 1; |
9ac3e487 | 497 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
498 | event->mmap.header.type = PERF_RECORD_MMAP; |
499 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 500 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
9c90a61c ACM |
501 | event->mmap.pgoff = args.start; |
502 | event->mmap.start = map->start; | |
503 | event->mmap.len = map->end - event->mmap.start; | |
504 | event->mmap.pid = machine->pid; | |
505 | ||
45694aa7 | 506 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
507 | free(event); |
508 | ||
509 | return err; | |
56b03f3c ACM |
510 | } |
511 | ||
482ad897 ACM |
512 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
513 | { | |
514 | return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid); | |
515 | } | |
516 | ||
45694aa7 | 517 | int perf_event__process_comm(struct perf_tool *tool __used, |
d20deb64 | 518 | union perf_event *event, |
8115d60c | 519 | struct perf_sample *sample __used, |
743eb868 | 520 | struct machine *machine) |
62daacb5 | 521 | { |
743eb868 | 522 | struct thread *thread = machine__findnew_thread(machine, event->comm.tid); |
62daacb5 | 523 | |
482ad897 ACM |
524 | if (dump_trace) |
525 | perf_event__fprintf_comm(event, stdout); | |
62daacb5 | 526 | |
d7603d51 | 527 | if (thread == NULL || thread__set_comm(thread, event->comm.comm)) { |
62daacb5 ACM |
528 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
529 | return -1; | |
530 | } | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
45694aa7 | 535 | int perf_event__process_lost(struct perf_tool *tool __used, |
d20deb64 | 536 | union perf_event *event, |
8115d60c | 537 | struct perf_sample *sample __used, |
743eb868 | 538 | struct machine *machine __used) |
62daacb5 | 539 | { |
9486aa38 | 540 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
8115d60c | 541 | event->lost.id, event->lost.lost); |
62daacb5 ACM |
542 | return 0; |
543 | } | |
544 | ||
8115d60c ACM |
545 | static void perf_event__set_kernel_mmap_len(union perf_event *event, |
546 | struct map **maps) | |
a1645ce1 | 547 | { |
8115d60c ACM |
548 | maps[MAP__FUNCTION]->start = event->mmap.start; |
549 | maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len; | |
a1645ce1 ZY |
550 | /* |
551 | * Be a bit paranoid here, some perf.data file came with | |
552 | * a zero sized synthesized MMAP event for the kernel. | |
553 | */ | |
554 | if (maps[MAP__FUNCTION]->end == 0) | |
9d1faba5 | 555 | maps[MAP__FUNCTION]->end = ~0ULL; |
a1645ce1 ZY |
556 | } |
557 | ||
45694aa7 | 558 | static int perf_event__process_kernel_mmap(struct perf_tool *tool __used, |
d20deb64 | 559 | union perf_event *event, |
743eb868 | 560 | struct machine *machine) |
62daacb5 | 561 | { |
56b03f3c | 562 | struct map *map; |
a1645ce1 | 563 | char kmmap_prefix[PATH_MAX]; |
a1645ce1 ZY |
564 | enum dso_kernel_type kernel_type; |
565 | bool is_kernel_mmap; | |
566 | ||
48ea8f54 | 567 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 568 | if (machine__is_host(machine)) |
a1645ce1 ZY |
569 | kernel_type = DSO_TYPE_KERNEL; |
570 | else | |
571 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 572 | |
8115d60c | 573 | is_kernel_mmap = memcmp(event->mmap.filename, |
a1645ce1 | 574 | kmmap_prefix, |
bf32c9eb | 575 | strlen(kmmap_prefix) - 1) == 0; |
8115d60c ACM |
576 | if (event->mmap.filename[0] == '/' || |
577 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
b7cece76 | 578 | |
a1645ce1 ZY |
579 | char short_module_name[1024]; |
580 | char *name, *dot; | |
b7cece76 | 581 | |
8115d60c ACM |
582 | if (event->mmap.filename[0] == '/') { |
583 | name = strrchr(event->mmap.filename, '/'); | |
b7cece76 ACM |
584 | if (name == NULL) |
585 | goto out_problem; | |
586 | ||
587 | ++name; /* skip / */ | |
588 | dot = strrchr(name, '.'); | |
589 | if (dot == NULL) | |
590 | goto out_problem; | |
b7cece76 | 591 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 592 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 593 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 | 594 | } else |
8115d60c | 595 | strcpy(short_module_name, event->mmap.filename); |
a1645ce1 | 596 | |
8115d60c ACM |
597 | map = machine__new_module(machine, event->mmap.start, |
598 | event->mmap.filename); | |
a1645ce1 ZY |
599 | if (map == NULL) |
600 | goto out_problem; | |
601 | ||
602 | name = strdup(short_module_name); | |
603 | if (name == NULL) | |
604 | goto out_problem; | |
605 | ||
606 | map->dso->short_name = name; | |
6e406257 | 607 | map->dso->sname_alloc = 1; |
8115d60c | 608 | map->end = map->start + event->mmap.len; |
a1645ce1 | 609 | } else if (is_kernel_mmap) { |
8115d60c | 610 | const char *symbol_name = (event->mmap.filename + |
a1645ce1 ZY |
611 | strlen(kmmap_prefix)); |
612 | /* | |
613 | * Should be there already, from the build-id table in | |
614 | * the header. | |
615 | */ | |
23346f21 ACM |
616 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
617 | kmmap_prefix); | |
a1645ce1 ZY |
618 | if (kernel == NULL) |
619 | goto out_problem; | |
620 | ||
621 | kernel->kernel = kernel_type; | |
d28c6223 | 622 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
623 | goto out_problem; |
624 | ||
8115d60c | 625 | perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps); |
ec80fde7 ACM |
626 | |
627 | /* | |
628 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
629 | * symbol. Effectively having zero here means that at record | |
630 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
631 | */ | |
632 | if (event->mmap.pgoff != 0) { | |
743eb868 ACM |
633 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, |
634 | symbol_name, | |
635 | event->mmap.pgoff); | |
ec80fde7 ACM |
636 | } |
637 | ||
23346f21 | 638 | if (machine__is_default_guest(machine)) { |
b7cece76 | 639 | /* |
a1645ce1 | 640 | * preload dso of guest kernel and modules |
b7cece76 | 641 | */ |
23346f21 ACM |
642 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
643 | NULL); | |
a1645ce1 ZY |
644 | } |
645 | } | |
646 | return 0; | |
647 | out_problem: | |
648 | return -1; | |
649 | } | |
b7cece76 | 650 | |
482ad897 ACM |
651 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
652 | { | |
653 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n", | |
654 | event->mmap.pid, event->mmap.tid, event->mmap.start, | |
655 | event->mmap.len, event->mmap.pgoff, event->mmap.filename); | |
656 | } | |
657 | ||
45694aa7 | 658 | int perf_event__process_mmap(struct perf_tool *tool, |
d20deb64 | 659 | union perf_event *event, |
8115d60c | 660 | struct perf_sample *sample __used, |
743eb868 | 661 | struct machine *machine) |
a1645ce1 | 662 | { |
a1645ce1 ZY |
663 | struct thread *thread; |
664 | struct map *map; | |
8115d60c | 665 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
a1645ce1 | 666 | int ret = 0; |
b7cece76 | 667 | |
482ad897 ACM |
668 | if (dump_trace) |
669 | perf_event__fprintf_mmap(event, stdout); | |
a1645ce1 ZY |
670 | |
671 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
672 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
45694aa7 | 673 | ret = perf_event__process_kernel_mmap(tool, event, machine); |
a1645ce1 ZY |
674 | if (ret < 0) |
675 | goto out_problem; | |
56b03f3c ACM |
676 | return 0; |
677 | } | |
678 | ||
743eb868 | 679 | thread = machine__findnew_thread(machine, event->mmap.pid); |
d65a458b ACM |
680 | if (thread == NULL) |
681 | goto out_problem; | |
8115d60c ACM |
682 | map = map__new(&machine->user_dsos, event->mmap.start, |
683 | event->mmap.len, event->mmap.pgoff, | |
684 | event->mmap.pid, event->mmap.filename, | |
361d1346 | 685 | MAP__FUNCTION); |
d65a458b | 686 | if (map == NULL) |
b7cece76 ACM |
687 | goto out_problem; |
688 | ||
689 | thread__insert_map(thread, map); | |
690 | return 0; | |
62daacb5 | 691 | |
b7cece76 ACM |
692 | out_problem: |
693 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
694 | return 0; |
695 | } | |
696 | ||
482ad897 ACM |
697 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
698 | { | |
699 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
700 | event->fork.pid, event->fork.tid, | |
701 | event->fork.ppid, event->fork.ptid); | |
702 | } | |
703 | ||
45694aa7 | 704 | int perf_event__process_task(struct perf_tool *tool __used, |
d20deb64 | 705 | union perf_event *event, |
8115d60c | 706 | struct perf_sample *sample __used, |
743eb868 | 707 | struct machine *machine) |
62daacb5 | 708 | { |
743eb868 ACM |
709 | struct thread *thread = machine__findnew_thread(machine, event->fork.tid); |
710 | struct thread *parent = machine__findnew_thread(machine, event->fork.ptid); | |
62daacb5 | 711 | |
482ad897 ACM |
712 | if (dump_trace) |
713 | perf_event__fprintf_task(event, stdout); | |
62daacb5 | 714 | |
8115d60c | 715 | if (event->header.type == PERF_RECORD_EXIT) { |
743eb868 | 716 | machine__remove_thread(machine, thread); |
62daacb5 | 717 | return 0; |
720a3aeb | 718 | } |
62daacb5 ACM |
719 | |
720 | if (thread == NULL || parent == NULL || | |
721 | thread__fork(thread, parent) < 0) { | |
722 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
723 | return -1; | |
724 | } | |
725 | ||
726 | return 0; | |
727 | } | |
1ed091c4 | 728 | |
482ad897 ACM |
729 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
730 | { | |
731 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
732 | perf_event__name(event->header.type)); | |
733 | ||
734 | switch (event->header.type) { | |
735 | case PERF_RECORD_COMM: | |
736 | ret += perf_event__fprintf_comm(event, fp); | |
737 | break; | |
738 | case PERF_RECORD_FORK: | |
739 | case PERF_RECORD_EXIT: | |
740 | ret += perf_event__fprintf_task(event, fp); | |
741 | break; | |
742 | case PERF_RECORD_MMAP: | |
743 | ret += perf_event__fprintf_mmap(event, fp); | |
744 | break; | |
745 | default: | |
746 | ret += fprintf(fp, "\n"); | |
747 | } | |
748 | ||
749 | return ret; | |
750 | } | |
751 | ||
45694aa7 | 752 | int perf_event__process(struct perf_tool *tool, union perf_event *event, |
743eb868 | 753 | struct perf_sample *sample, struct machine *machine) |
b83f920e SD |
754 | { |
755 | switch (event->header.type) { | |
756 | case PERF_RECORD_COMM: | |
45694aa7 | 757 | perf_event__process_comm(tool, event, sample, machine); |
b83f920e SD |
758 | break; |
759 | case PERF_RECORD_MMAP: | |
45694aa7 | 760 | perf_event__process_mmap(tool, event, sample, machine); |
b83f920e SD |
761 | break; |
762 | case PERF_RECORD_FORK: | |
763 | case PERF_RECORD_EXIT: | |
45694aa7 | 764 | perf_event__process_task(tool, event, sample, machine); |
b83f920e | 765 | break; |
ef2bf6d0 | 766 | case PERF_RECORD_LOST: |
45694aa7 | 767 | perf_event__process_lost(tool, event, sample, machine); |
b83f920e SD |
768 | default: |
769 | break; | |
770 | } | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
59ee68ec | 775 | void thread__find_addr_map(struct thread *self, |
743eb868 ACM |
776 | struct machine *machine, u8 cpumode, |
777 | enum map_type type, u64 addr, | |
59ee68ec | 778 | struct addr_location *al) |
1ed091c4 | 779 | { |
9958e1f0 | 780 | struct map_groups *mg = &self->mg; |
1ed091c4 | 781 | |
9958e1f0 | 782 | al->thread = self; |
1ed091c4 | 783 | al->addr = addr; |
a1645ce1 ZY |
784 | al->cpumode = cpumode; |
785 | al->filtered = false; | |
1ed091c4 | 786 | |
743eb868 ACM |
787 | if (machine == NULL) { |
788 | al->map = NULL; | |
789 | return; | |
790 | } | |
791 | ||
a1645ce1 | 792 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 793 | al->level = 'k'; |
23346f21 | 794 | mg = &machine->kmaps; |
a1645ce1 | 795 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 796 | al->level = '.'; |
a1645ce1 ZY |
797 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
798 | al->level = 'g'; | |
23346f21 | 799 | mg = &machine->kmaps; |
a1645ce1 ZY |
800 | } else { |
801 | /* | |
802 | * 'u' means guest os user space. | |
803 | * TODO: We don't support guest user space. Might support late. | |
804 | */ | |
805 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
806 | al->level = 'u'; | |
807 | else | |
808 | al->level = 'H'; | |
1ed091c4 | 809 | al->map = NULL; |
a1645ce1 ZY |
810 | |
811 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
812 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
813 | !perf_guest) | |
814 | al->filtered = true; | |
815 | if ((cpumode == PERF_RECORD_MISC_USER || | |
816 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
817 | !perf_host) | |
818 | al->filtered = true; | |
819 | ||
1ed091c4 ACM |
820 | return; |
821 | } | |
822 | try_again: | |
9958e1f0 | 823 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
824 | if (al->map == NULL) { |
825 | /* | |
826 | * If this is outside of all known maps, and is a negative | |
827 | * address, try to look it up in the kernel dso, as it might be | |
828 | * a vsyscall or vdso (which executes in user-mode). | |
829 | * | |
830 | * XXX This is nasty, we should have a symbol list in the | |
831 | * "[vdso]" dso, but for now lets use the old trick of looking | |
832 | * in the whole kernel symbol list. | |
833 | */ | |
a1645ce1 | 834 | if ((long long)al->addr < 0 && |
6c6804fb | 835 | cpumode == PERF_RECORD_MISC_USER && |
23346f21 ACM |
836 | machine && mg != &machine->kmaps) { |
837 | mg = &machine->kmaps; | |
1ed091c4 ACM |
838 | goto try_again; |
839 | } | |
59ee68ec | 840 | } else |
1ed091c4 | 841 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
842 | } |
843 | ||
743eb868 ACM |
844 | void thread__find_addr_location(struct thread *thread, struct machine *machine, |
845 | u8 cpumode, enum map_type type, u64 addr, | |
59ee68ec ACM |
846 | struct addr_location *al, |
847 | symbol_filter_t filter) | |
848 | { | |
743eb868 | 849 | thread__find_addr_map(thread, machine, cpumode, type, addr, al); |
59ee68ec | 850 | if (al->map != NULL) |
9de89fe7 | 851 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
852 | else |
853 | al->sym = NULL; | |
1ed091c4 ACM |
854 | } |
855 | ||
8115d60c | 856 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 857 | struct machine *machine, |
8115d60c ACM |
858 | struct addr_location *al, |
859 | struct perf_sample *sample, | |
860 | symbol_filter_t filter) | |
1ed091c4 | 861 | { |
8115d60c | 862 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
743eb868 | 863 | struct thread *thread = machine__findnew_thread(machine, event->ip.pid); |
41a37e20 | 864 | |
1ed091c4 ACM |
865 | if (thread == NULL) |
866 | return -1; | |
867 | ||
c410a338 ACM |
868 | if (symbol_conf.comm_list && |
869 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
870 | goto out_filtered; | |
871 | ||
1ed091c4 | 872 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 | 873 | /* |
743eb868 | 874 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
875 | * |
876 | * This should have happened earlier, when we processed the kernel MMAP | |
877 | * events, but for older perf.data files there was no such thing, so do | |
878 | * it now. | |
879 | */ | |
880 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
881 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
882 | machine__create_kernel_maps(machine); | |
1ed091c4 | 883 | |
743eb868 ACM |
884 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
885 | event->ip.ip, al); | |
1ed091c4 ACM |
886 | dump_printf(" ...... dso: %s\n", |
887 | al->map ? al->map->dso->long_name : | |
888 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d | 889 | al->sym = NULL; |
8d50e5b4 | 890 | al->cpu = sample->cpu; |
96415e4d ACM |
891 | |
892 | if (al->map) { | |
cb8f4e9a NK |
893 | struct dso *dso = al->map->dso; |
894 | ||
96415e4d | 895 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
896 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
897 | dso->short_name) || | |
898 | (dso->short_name != dso->long_name && | |
899 | strlist__has_entry(symbol_conf.dso_list, | |
900 | dso->long_name))))) | |
96415e4d | 901 | goto out_filtered; |
96415e4d ACM |
902 | |
903 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
904 | } | |
c410a338 ACM |
905 | |
906 | if (symbol_conf.sym_list && al->sym && | |
907 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
908 | goto out_filtered; | |
909 | ||
c410a338 ACM |
910 | return 0; |
911 | ||
912 | out_filtered: | |
913 | al->filtered = true; | |
1ed091c4 ACM |
914 | return 0; |
915 | } |