Commit | Line | Data |
---|---|---|
234fbbf5 | 1 | #include <linux/types.h> |
7ef80703 | 2 | #include <sys/mman.h> |
234fbbf5 ACM |
3 | #include "event.h" |
4 | #include "debug.h" | |
b3cef7f6 | 5 | #include "hist.h" |
f62d3f0f | 6 | #include "machine.h" |
c410a338 | 7 | #include "sort.h" |
234fbbf5 | 8 | #include "string.h" |
c410a338 | 9 | #include "strlist.h" |
62daacb5 | 10 | #include "thread.h" |
7c940c18 | 11 | #include "thread_map.h" |
c506c96b | 12 | #include "symbol/kallsyms.h" |
234fbbf5 | 13 | |
8115d60c | 14 | static const char *perf_event__names[] = { |
3cb6d154 FW |
15 | [0] = "TOTAL", |
16 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 17 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
18 | [PERF_RECORD_LOST] = "LOST", |
19 | [PERF_RECORD_COMM] = "COMM", | |
20 | [PERF_RECORD_EXIT] = "EXIT", | |
21 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
22 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
23 | [PERF_RECORD_FORK] = "FORK", | |
24 | [PERF_RECORD_READ] = "READ", | |
25 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
4a96f7a0 | 26 | [PERF_RECORD_AUX] = "AUX", |
0ad21f68 | 27 | [PERF_RECORD_ITRACE_START] = "ITRACE_START", |
c4937a91 | 28 | [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES", |
0286039f AH |
29 | [PERF_RECORD_SWITCH] = "SWITCH", |
30 | [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE", | |
3cb6d154 FW |
31 | [PERF_RECORD_HEADER_ATTR] = "ATTR", |
32 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
33 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
34 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
35 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
3c659eed | 36 | [PERF_RECORD_ID_INDEX] = "ID_INDEX", |
a16ac023 AH |
37 | [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", |
38 | [PERF_RECORD_AUXTRACE] = "AUXTRACE", | |
e9bf54d2 | 39 | [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", |
c8446b9b ACM |
40 | }; |
41 | ||
8115d60c | 42 | const char *perf_event__name(unsigned int id) |
3835bc00 | 43 | { |
8115d60c | 44 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 45 | return "INVALID"; |
8115d60c | 46 | if (!perf_event__names[id]) |
3835bc00 | 47 | return "UNKNOWN"; |
8115d60c | 48 | return perf_event__names[id]; |
3835bc00 TG |
49 | } |
50 | ||
8d50e5b4 | 51 | static struct perf_sample synth_sample = { |
640c03ce ACM |
52 | .pid = -1, |
53 | .tid = -1, | |
54 | .time = -1, | |
55 | .stream_id = -1, | |
56 | .cpu = -1, | |
57 | .period = 1, | |
58 | }; | |
59 | ||
5aa0b030 DA |
60 | /* |
61 | * Assumes that the first 4095 bytes of /proc/pid/stat contains | |
ca6c41c5 | 62 | * the comm, tgid and ppid. |
5aa0b030 | 63 | */ |
ca6c41c5 DA |
64 | static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len, |
65 | pid_t *tgid, pid_t *ppid) | |
234fbbf5 | 66 | { |
234fbbf5 | 67 | char filename[PATH_MAX]; |
5aa0b030 DA |
68 | char bf[4096]; |
69 | int fd; | |
70 | size_t size = 0, n; | |
ca6c41c5 DA |
71 | char *nl, *name, *tgids, *ppids; |
72 | ||
73 | *tgid = -1; | |
74 | *ppid = -1; | |
234fbbf5 ACM |
75 | |
76 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
77 | ||
5aa0b030 DA |
78 | fd = open(filename, O_RDONLY); |
79 | if (fd < 0) { | |
234fbbf5 | 80 | pr_debug("couldn't open %s\n", filename); |
ca6c41c5 | 81 | return -1; |
234fbbf5 ACM |
82 | } |
83 | ||
5aa0b030 DA |
84 | n = read(fd, bf, sizeof(bf) - 1); |
85 | close(fd); | |
86 | if (n <= 0) { | |
ca6c41c5 | 87 | pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n", |
5aa0b030 DA |
88 | pid); |
89 | return -1; | |
234fbbf5 | 90 | } |
5aa0b030 | 91 | bf[n] = '\0'; |
234fbbf5 | 92 | |
5aa0b030 DA |
93 | name = strstr(bf, "Name:"); |
94 | tgids = strstr(bf, "Tgid:"); | |
ca6c41c5 | 95 | ppids = strstr(bf, "PPid:"); |
5aa0b030 DA |
96 | |
97 | if (name) { | |
98 | name += 5; /* strlen("Name:") */ | |
99 | ||
100 | while (*name && isspace(*name)) | |
101 | ++name; | |
102 | ||
103 | nl = strchr(name, '\n'); | |
104 | if (nl) | |
105 | *nl = '\0'; | |
106 | ||
107 | size = strlen(name); | |
108 | if (size >= len) | |
109 | size = len - 1; | |
110 | memcpy(comm, name, size); | |
111 | comm[size] = '\0'; | |
112 | } else { | |
113 | pr_debug("Name: string not found for pid %d\n", pid); | |
114 | } | |
115 | ||
116 | if (tgids) { | |
117 | tgids += 5; /* strlen("Tgid:") */ | |
ca6c41c5 | 118 | *tgid = atoi(tgids); |
5aa0b030 DA |
119 | } else { |
120 | pr_debug("Tgid: string not found for pid %d\n", pid); | |
121 | } | |
f5faf726 | 122 | |
ca6c41c5 DA |
123 | if (ppids) { |
124 | ppids += 5; /* strlen("PPid:") */ | |
125 | *ppid = atoi(ppids); | |
126 | } else { | |
127 | pr_debug("PPid: string not found for pid %d\n", pid); | |
128 | } | |
129 | ||
130 | return 0; | |
f5faf726 DA |
131 | } |
132 | ||
ca6c41c5 DA |
133 | static int perf_event__prepare_comm(union perf_event *event, pid_t pid, |
134 | struct machine *machine, | |
135 | pid_t *tgid, pid_t *ppid) | |
f5faf726 | 136 | { |
f5faf726 | 137 | size_t size; |
ca6c41c5 DA |
138 | |
139 | *ppid = -1; | |
f5faf726 DA |
140 | |
141 | memset(&event->comm, 0, sizeof(event->comm)); | |
142 | ||
ca6c41c5 DA |
143 | if (machine__is_host(machine)) { |
144 | if (perf_event__get_comm_ids(pid, event->comm.comm, | |
145 | sizeof(event->comm.comm), | |
146 | tgid, ppid) != 0) { | |
147 | return -1; | |
148 | } | |
149 | } else { | |
150 | *tgid = machine->pid; | |
151 | } | |
f5db57c4 | 152 | |
ca6c41c5 DA |
153 | if (*tgid < 0) |
154 | return -1; | |
f5faf726 | 155 | |
ca6c41c5 | 156 | event->comm.pid = *tgid; |
9c90a61c | 157 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
158 | |
159 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 160 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 161 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
162 | event->comm.header.size = (sizeof(event->comm) - |
163 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 164 | machine->id_hdr_size); |
bfd66cc7 | 165 | event->comm.tid = pid; |
ca6c41c5 DA |
166 | |
167 | return 0; | |
4aa5f4f7 ACM |
168 | } |
169 | ||
170 | static pid_t perf_event__synthesize_comm(struct perf_tool *tool, | |
171 | union perf_event *event, pid_t pid, | |
172 | perf_event__handler_t process, | |
173 | struct machine *machine) | |
174 | { | |
ca6c41c5 | 175 | pid_t tgid, ppid; |
4aa5f4f7 | 176 | |
ca6c41c5 DA |
177 | if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0) |
178 | return -1; | |
f5faf726 | 179 | |
bfd66cc7 DZ |
180 | if (process(tool, event, &synth_sample, machine) != 0) |
181 | return -1; | |
234fbbf5 | 182 | |
9c90a61c | 183 | return tgid; |
234fbbf5 ACM |
184 | } |
185 | ||
363b785f | 186 | static int perf_event__synthesize_fork(struct perf_tool *tool, |
ca6c41c5 DA |
187 | union perf_event *event, |
188 | pid_t pid, pid_t tgid, pid_t ppid, | |
189 | perf_event__handler_t process, | |
363b785f DZ |
190 | struct machine *machine) |
191 | { | |
192 | memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size); | |
193 | ||
7764a385 DA |
194 | /* |
195 | * for main thread set parent to ppid from status file. For other | |
196 | * threads set parent pid to main thread. ie., assume main thread | |
197 | * spawns all threads in a process | |
198 | */ | |
199 | if (tgid == pid) { | |
200 | event->fork.ppid = ppid; | |
201 | event->fork.ptid = ppid; | |
202 | } else { | |
203 | event->fork.ppid = tgid; | |
204 | event->fork.ptid = tgid; | |
205 | } | |
363b785f DZ |
206 | event->fork.pid = tgid; |
207 | event->fork.tid = pid; | |
208 | event->fork.header.type = PERF_RECORD_FORK; | |
209 | ||
210 | event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size); | |
211 | ||
212 | if (process(tool, event, &synth_sample, machine) != 0) | |
213 | return -1; | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
a18382b6 JO |
218 | int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
219 | union perf_event *event, | |
220 | pid_t pid, pid_t tgid, | |
221 | perf_event__handler_t process, | |
222 | struct machine *machine, | |
9d9cad76 KL |
223 | bool mmap_data, |
224 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
225 | { |
226 | char filename[PATH_MAX]; | |
227 | FILE *fp; | |
930e6fcd KL |
228 | unsigned long long t; |
229 | bool truncation = false; | |
9d9cad76 | 230 | unsigned long long timeout = proc_map_timeout * 1000000ULL; |
1e6d5322 | 231 | int rc = 0; |
234fbbf5 | 232 | |
c239c25a DY |
233 | if (machine__is_default_guest(machine)) |
234 | return 0; | |
235 | ||
99563465 DY |
236 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
237 | machine->root_dir, pid); | |
234fbbf5 ACM |
238 | |
239 | fp = fopen(filename, "r"); | |
240 | if (fp == NULL) { | |
241 | /* | |
242 | * We raced with a task exiting - just return: | |
243 | */ | |
244 | pr_debug("couldn't open %s\n", filename); | |
245 | return -1; | |
246 | } | |
247 | ||
a5a5ba72 | 248 | event->header.type = PERF_RECORD_MMAP2; |
930e6fcd | 249 | t = rdclock(); |
9c90a61c | 250 | |
234fbbf5 | 251 | while (1) { |
60648033 NK |
252 | char bf[BUFSIZ]; |
253 | char prot[5]; | |
254 | char execname[PATH_MAX]; | |
255 | char anonstr[] = "//anon"; | |
a5a5ba72 | 256 | unsigned int ino; |
234fbbf5 | 257 | size_t size; |
5c5e854b | 258 | ssize_t n; |
60648033 | 259 | |
234fbbf5 ACM |
260 | if (fgets(bf, sizeof(bf), fp) == NULL) |
261 | break; | |
262 | ||
9d9cad76 KL |
263 | if ((rdclock() - t) > timeout) { |
264 | pr_warning("Reading %s time out. " | |
265 | "You may want to increase " | |
266 | "the time limit by --proc-map-timeout\n", | |
267 | filename); | |
930e6fcd KL |
268 | truncation = true; |
269 | goto out; | |
270 | } | |
271 | ||
60648033 NK |
272 | /* ensure null termination since stack will be reused. */ |
273 | strcpy(execname, ""); | |
274 | ||
234fbbf5 | 275 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
a5a5ba72 DZ |
276 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n", |
277 | &event->mmap2.start, &event->mmap2.len, prot, | |
278 | &event->mmap2.pgoff, &event->mmap2.maj, | |
279 | &event->mmap2.min, | |
280 | &ino, execname); | |
281 | ||
9d4ecc88 DZ |
282 | /* |
283 | * Anon maps don't have the execname. | |
284 | */ | |
a5a5ba72 | 285 | if (n < 7) |
5c5e854b | 286 | continue; |
a5a5ba72 DZ |
287 | |
288 | event->mmap2.ino = (u64)ino; | |
289 | ||
62605dc5 ACM |
290 | /* |
291 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
292 | */ | |
73547aac DY |
293 | if (machine__is_host(machine)) |
294 | event->header.misc = PERF_RECORD_MISC_USER; | |
295 | else | |
296 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 297 | |
7ef80703 DZ |
298 | /* map protection and flags bits */ |
299 | event->mmap2.prot = 0; | |
300 | event->mmap2.flags = 0; | |
301 | if (prot[0] == 'r') | |
302 | event->mmap2.prot |= PROT_READ; | |
303 | if (prot[1] == 'w') | |
304 | event->mmap2.prot |= PROT_WRITE; | |
305 | if (prot[2] == 'x') | |
306 | event->mmap2.prot |= PROT_EXEC; | |
307 | ||
308 | if (prot[3] == 's') | |
309 | event->mmap2.flags |= MAP_SHARED; | |
310 | else | |
311 | event->mmap2.flags |= MAP_PRIVATE; | |
312 | ||
62605dc5 ACM |
313 | if (prot[2] != 'x') { |
314 | if (!mmap_data || prot[0] != 'r') | |
315 | continue; | |
316 | ||
317 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
318 | } | |
60648033 | 319 | |
930e6fcd KL |
320 | out: |
321 | if (truncation) | |
322 | event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT; | |
323 | ||
60648033 NK |
324 | if (!strcmp(execname, "")) |
325 | strcpy(execname, anonstr); | |
326 | ||
327 | size = strlen(execname) + 1; | |
a5a5ba72 | 328 | memcpy(event->mmap2.filename, execname, size); |
60648033 | 329 | size = PERF_ALIGN(size, sizeof(u64)); |
a5a5ba72 DZ |
330 | event->mmap2.len -= event->mmap.start; |
331 | event->mmap2.header.size = (sizeof(event->mmap2) - | |
332 | (sizeof(event->mmap2.filename) - size)); | |
333 | memset(event->mmap2.filename + size, 0, machine->id_hdr_size); | |
334 | event->mmap2.header.size += machine->id_hdr_size; | |
335 | event->mmap2.pid = tgid; | |
336 | event->mmap2.tid = pid; | |
60648033 NK |
337 | |
338 | if (process(tool, event, &synth_sample, machine) != 0) { | |
339 | rc = -1; | |
340 | break; | |
234fbbf5 | 341 | } |
930e6fcd KL |
342 | |
343 | if (truncation) | |
344 | break; | |
234fbbf5 ACM |
345 | } |
346 | ||
347 | fclose(fp); | |
1e6d5322 | 348 | return rc; |
234fbbf5 ACM |
349 | } |
350 | ||
45694aa7 | 351 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 352 | perf_event__handler_t process, |
8115d60c | 353 | struct machine *machine) |
b7cece76 | 354 | { |
1e6d5322 | 355 | int rc = 0; |
4bb7123d | 356 | struct map *pos; |
23346f21 | 357 | struct map_groups *kmaps = &machine->kmaps; |
1eee78ae | 358 | struct maps *maps = &kmaps->maps[MAP__FUNCTION]; |
8115d60c | 359 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 360 | machine->id_hdr_size)); |
9c90a61c ACM |
361 | if (event == NULL) { |
362 | pr_debug("Not enough memory synthesizing mmap event " | |
363 | "for kernel modules\n"); | |
364 | return -1; | |
365 | } | |
366 | ||
367 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 368 | |
a1645ce1 ZY |
369 | /* |
370 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
371 | * __perf_event_mmap | |
372 | */ | |
23346f21 | 373 | if (machine__is_host(machine)) |
9c90a61c | 374 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 375 | else |
9c90a61c | 376 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 | 377 | |
4bb7123d | 378 | for (pos = maps__first(maps); pos; pos = map__next(pos)) { |
b7cece76 | 379 | size_t size; |
b7cece76 ACM |
380 | |
381 | if (pos->dso->kernel) | |
382 | continue; | |
383 | ||
9ac3e487 | 384 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
385 | event->mmap.header.type = PERF_RECORD_MMAP; |
386 | event->mmap.header.size = (sizeof(event->mmap) - | |
387 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
388 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
389 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
390 | event->mmap.start = pos->start; |
391 | event->mmap.len = pos->end - pos->start; | |
392 | event->mmap.pid = machine->pid; | |
393 | ||
394 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 395 | pos->dso->long_name_len + 1); |
1e6d5322 DA |
396 | if (process(tool, event, &synth_sample, machine) != 0) { |
397 | rc = -1; | |
398 | break; | |
399 | } | |
b7cece76 ACM |
400 | } |
401 | ||
9c90a61c | 402 | free(event); |
1e6d5322 | 403 | return rc; |
b7cece76 ACM |
404 | } |
405 | ||
8115d60c ACM |
406 | static int __event__synthesize_thread(union perf_event *comm_event, |
407 | union perf_event *mmap_event, | |
363b785f | 408 | union perf_event *fork_event, |
defd8d38 DA |
409 | pid_t pid, int full, |
410 | perf_event__handler_t process, | |
45694aa7 | 411 | struct perf_tool *tool, |
9d9cad76 KL |
412 | struct machine *machine, |
413 | bool mmap_data, | |
414 | unsigned int proc_map_timeout) | |
234fbbf5 | 415 | { |
bfd66cc7 DZ |
416 | char filename[PATH_MAX]; |
417 | DIR *tasks; | |
418 | struct dirent dirent, *next; | |
ca6c41c5 | 419 | pid_t tgid, ppid; |
d998b732 | 420 | int rc = 0; |
bfd66cc7 DZ |
421 | |
422 | /* special case: only send one comm event using passed in pid */ | |
423 | if (!full) { | |
424 | tgid = perf_event__synthesize_comm(tool, comm_event, pid, | |
425 | process, machine); | |
426 | ||
427 | if (tgid == -1) | |
428 | return -1; | |
429 | ||
430 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 KL |
431 | process, machine, mmap_data, |
432 | proc_map_timeout); | |
bfd66cc7 DZ |
433 | } |
434 | ||
435 | if (machine__is_default_guest(machine)) | |
436 | return 0; | |
437 | ||
438 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", | |
439 | machine->root_dir, pid); | |
440 | ||
441 | tasks = opendir(filename); | |
442 | if (tasks == NULL) { | |
443 | pr_debug("couldn't open %s\n", filename); | |
444 | return 0; | |
445 | } | |
446 | ||
447 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
448 | char *end; | |
bfd66cc7 DZ |
449 | pid_t _pid; |
450 | ||
451 | _pid = strtol(dirent.d_name, &end, 10); | |
452 | if (*end) | |
453 | continue; | |
454 | ||
d998b732 | 455 | rc = -1; |
ca6c41c5 DA |
456 | if (perf_event__prepare_comm(comm_event, _pid, machine, |
457 | &tgid, &ppid) != 0) | |
d998b732 | 458 | break; |
bfd66cc7 | 459 | |
4aa5f4f7 | 460 | if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid, |
ca6c41c5 | 461 | ppid, process, machine) < 0) |
d998b732 | 462 | break; |
4aa5f4f7 ACM |
463 | /* |
464 | * Send the prepared comm event | |
465 | */ | |
466 | if (process(tool, comm_event, &synth_sample, machine) != 0) | |
d998b732 | 467 | break; |
4aa5f4f7 | 468 | |
d998b732 | 469 | rc = 0; |
363b785f DZ |
470 | if (_pid == pid) { |
471 | /* process the parent's maps too */ | |
472 | rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 | 473 | process, machine, mmap_data, proc_map_timeout); |
d998b732 ACM |
474 | if (rc) |
475 | break; | |
363b785f | 476 | } |
bfd66cc7 DZ |
477 | } |
478 | ||
479 | closedir(tasks); | |
d998b732 | 480 | return rc; |
234fbbf5 ACM |
481 | } |
482 | ||
45694aa7 | 483 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 484 | struct thread_map *threads, |
7c940c18 | 485 | perf_event__handler_t process, |
62605dc5 | 486 | struct machine *machine, |
9d9cad76 KL |
487 | bool mmap_data, |
488 | unsigned int proc_map_timeout) | |
9c90a61c | 489 | { |
363b785f | 490 | union perf_event *comm_event, *mmap_event, *fork_event; |
defd8d38 | 491 | int err = -1, thread, j; |
9c90a61c | 492 | |
743eb868 | 493 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
494 | if (comm_event == NULL) |
495 | goto out; | |
496 | ||
743eb868 | 497 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
498 | if (mmap_event == NULL) |
499 | goto out_free_comm; | |
500 | ||
363b785f DZ |
501 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
502 | if (fork_event == NULL) | |
503 | goto out_free_mmap; | |
504 | ||
401b8e13 ACM |
505 | err = 0; |
506 | for (thread = 0; thread < threads->nr; ++thread) { | |
507 | if (__event__synthesize_thread(comm_event, mmap_event, | |
363b785f | 508 | fork_event, |
e13798c7 | 509 | thread_map__pid(threads, thread), 0, |
62605dc5 | 510 | process, tool, machine, |
9d9cad76 | 511 | mmap_data, proc_map_timeout)) { |
401b8e13 ACM |
512 | err = -1; |
513 | break; | |
514 | } | |
defd8d38 DA |
515 | |
516 | /* | |
517 | * comm.pid is set to thread group id by | |
518 | * perf_event__synthesize_comm | |
519 | */ | |
e13798c7 | 520 | if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) { |
defd8d38 DA |
521 | bool need_leader = true; |
522 | ||
523 | /* is thread group leader in thread_map? */ | |
524 | for (j = 0; j < threads->nr; ++j) { | |
e13798c7 | 525 | if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) { |
defd8d38 DA |
526 | need_leader = false; |
527 | break; | |
528 | } | |
529 | } | |
530 | ||
531 | /* if not, generate events for it */ | |
532 | if (need_leader && | |
62605dc5 | 533 | __event__synthesize_thread(comm_event, mmap_event, |
363b785f | 534 | fork_event, |
62605dc5 ACM |
535 | comm_event->comm.pid, 0, |
536 | process, tool, machine, | |
9d9cad76 | 537 | mmap_data, proc_map_timeout)) { |
defd8d38 DA |
538 | err = -1; |
539 | break; | |
540 | } | |
541 | } | |
401b8e13 | 542 | } |
363b785f DZ |
543 | free(fork_event); |
544 | out_free_mmap: | |
9c90a61c ACM |
545 | free(mmap_event); |
546 | out_free_comm: | |
547 | free(comm_event); | |
548 | out: | |
549 | return err; | |
550 | } | |
551 | ||
45694aa7 | 552 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 553 | perf_event__handler_t process, |
9d9cad76 KL |
554 | struct machine *machine, |
555 | bool mmap_data, | |
556 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
557 | { |
558 | DIR *proc; | |
99563465 | 559 | char proc_path[PATH_MAX]; |
234fbbf5 | 560 | struct dirent dirent, *next; |
363b785f | 561 | union perf_event *comm_event, *mmap_event, *fork_event; |
9c90a61c ACM |
562 | int err = -1; |
563 | ||
574799bf NK |
564 | if (machine__is_default_guest(machine)) |
565 | return 0; | |
566 | ||
743eb868 | 567 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
568 | if (comm_event == NULL) |
569 | goto out; | |
570 | ||
743eb868 | 571 | mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); |
9c90a61c ACM |
572 | if (mmap_event == NULL) |
573 | goto out_free_comm; | |
234fbbf5 | 574 | |
363b785f DZ |
575 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
576 | if (fork_event == NULL) | |
577 | goto out_free_mmap; | |
578 | ||
99563465 DY |
579 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
580 | proc = opendir(proc_path); | |
581 | ||
9c90a61c | 582 | if (proc == NULL) |
363b785f | 583 | goto out_free_fork; |
234fbbf5 ACM |
584 | |
585 | while (!readdir_r(proc, &dirent, &next) && next) { | |
586 | char *end; | |
587 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
588 | ||
589 | if (*end) /* only interested in proper numerical dirents */ | |
590 | continue; | |
ba361c92 ACM |
591 | /* |
592 | * We may race with exiting thread, so don't stop just because | |
593 | * one thread couldn't be synthesized. | |
594 | */ | |
363b785f | 595 | __event__synthesize_thread(comm_event, mmap_event, fork_event, pid, |
9d9cad76 KL |
596 | 1, process, tool, machine, mmap_data, |
597 | proc_map_timeout); | |
234fbbf5 ACM |
598 | } |
599 | ||
9c90a61c | 600 | err = 0; |
1e6d5322 | 601 | closedir(proc); |
363b785f DZ |
602 | out_free_fork: |
603 | free(fork_event); | |
9c90a61c ACM |
604 | out_free_mmap: |
605 | free(mmap_event); | |
606 | out_free_comm: | |
607 | free(comm_event); | |
608 | out: | |
609 | return err; | |
234fbbf5 | 610 | } |
62daacb5 | 611 | |
56b03f3c ACM |
612 | struct process_symbol_args { |
613 | const char *name; | |
614 | u64 start; | |
615 | }; | |
616 | ||
3b01a413 | 617 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 618 | u64 start) |
56b03f3c ACM |
619 | { |
620 | struct process_symbol_args *args = arg; | |
621 | ||
881516eb ACM |
622 | /* |
623 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
624 | * an 'A' to the same address as "_stext". | |
625 | */ | |
626 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
627 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
628 | return 0; |
629 | ||
630 | args->start = start; | |
631 | return 1; | |
632 | } | |
633 | ||
29b596b5 AH |
634 | u64 kallsyms__get_function_start(const char *kallsyms_filename, |
635 | const char *symbol_name) | |
636 | { | |
637 | struct process_symbol_args args = { .name = symbol_name, }; | |
638 | ||
639 | if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) | |
640 | return 0; | |
641 | ||
642 | return args.start; | |
643 | } | |
644 | ||
45694aa7 | 645 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 646 | perf_event__handler_t process, |
0ae617be | 647 | struct machine *machine) |
56b03f3c ACM |
648 | { |
649 | size_t size; | |
0ae617be | 650 | const char *mmap_name; |
a1645ce1 ZY |
651 | char name_buff[PATH_MAX]; |
652 | struct map *map; | |
0ae617be | 653 | struct kmap *kmap; |
9c90a61c | 654 | int err; |
a5c2a4c9 AK |
655 | union perf_event *event; |
656 | ||
657 | if (machine->vmlinux_maps[0] == NULL) | |
658 | return -1; | |
659 | ||
56b03f3c ACM |
660 | /* |
661 | * We should get this from /sys/kernel/sections/.text, but till that is | |
662 | * available use this, and after it is use this as a fallback for older | |
663 | * kernels. | |
664 | */ | |
a5c2a4c9 | 665 | event = zalloc((sizeof(event->mmap) + machine->id_hdr_size)); |
9c90a61c ACM |
666 | if (event == NULL) { |
667 | pr_debug("Not enough memory synthesizing mmap event " | |
668 | "for kernel modules\n"); | |
669 | return -1; | |
670 | } | |
56b03f3c | 671 | |
48ea8f54 | 672 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 673 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
674 | /* |
675 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
676 | * see kernel/perf_event.c __perf_event_mmap | |
677 | */ | |
9c90a61c | 678 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 679 | } else { |
9c90a61c | 680 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
0b9e01a4 | 681 | } |
56b03f3c | 682 | |
23346f21 | 683 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
0ae617be | 684 | kmap = map__kmap(map); |
9c90a61c | 685 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
0ae617be | 686 | "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1; |
9ac3e487 | 687 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
688 | event->mmap.header.type = PERF_RECORD_MMAP; |
689 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 690 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
0ae617be | 691 | event->mmap.pgoff = kmap->ref_reloc_sym->addr; |
9c90a61c ACM |
692 | event->mmap.start = map->start; |
693 | event->mmap.len = map->end - event->mmap.start; | |
694 | event->mmap.pid = machine->pid; | |
695 | ||
45694aa7 | 696 | err = process(tool, event, &synth_sample, machine); |
9c90a61c ACM |
697 | free(event); |
698 | ||
699 | return err; | |
56b03f3c ACM |
700 | } |
701 | ||
482ad897 ACM |
702 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
703 | { | |
022c50d0 AH |
704 | const char *s; |
705 | ||
706 | if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) | |
707 | s = " exec"; | |
708 | else | |
709 | s = ""; | |
710 | ||
50674065 | 711 | return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); |
482ad897 ACM |
712 | } |
713 | ||
1d037ca1 | 714 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 715 | union perf_event *event, |
162f0bef | 716 | struct perf_sample *sample, |
743eb868 | 717 | struct machine *machine) |
62daacb5 | 718 | { |
162f0bef | 719 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
720 | } |
721 | ||
1d037ca1 | 722 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 723 | union perf_event *event, |
162f0bef | 724 | struct perf_sample *sample, |
b0a7d1a0 | 725 | struct machine *machine) |
62daacb5 | 726 | { |
162f0bef | 727 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 728 | } |
b7cece76 | 729 | |
4a96f7a0 AH |
730 | int perf_event__process_aux(struct perf_tool *tool __maybe_unused, |
731 | union perf_event *event, | |
732 | struct perf_sample *sample __maybe_unused, | |
733 | struct machine *machine) | |
734 | { | |
735 | return machine__process_aux_event(machine, event); | |
736 | } | |
737 | ||
0ad21f68 AH |
738 | int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused, |
739 | union perf_event *event, | |
740 | struct perf_sample *sample __maybe_unused, | |
741 | struct machine *machine) | |
742 | { | |
743 | return machine__process_itrace_start_event(machine, event); | |
744 | } | |
745 | ||
c4937a91 KL |
746 | int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused, |
747 | union perf_event *event, | |
748 | struct perf_sample *sample, | |
749 | struct machine *machine) | |
750 | { | |
751 | return machine__process_lost_samples_event(machine, event, sample); | |
752 | } | |
753 | ||
0286039f AH |
754 | int perf_event__process_switch(struct perf_tool *tool __maybe_unused, |
755 | union perf_event *event, | |
756 | struct perf_sample *sample __maybe_unused, | |
757 | struct machine *machine) | |
758 | { | |
759 | return machine__process_switch_event(machine, event); | |
760 | } | |
761 | ||
482ad897 ACM |
762 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
763 | { | |
62605dc5 | 764 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 765 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
766 | event->mmap.len, event->mmap.pgoff, |
767 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
768 | event->mmap.filename); | |
482ad897 ACM |
769 | } |
770 | ||
5c5e854b SE |
771 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
772 | { | |
773 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
7ef80703 | 774 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n", |
5c5e854b SE |
775 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
776 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
777 | event->mmap2.min, event->mmap2.ino, | |
778 | event->mmap2.ino_generation, | |
7ef80703 DZ |
779 | (event->mmap2.prot & PROT_READ) ? 'r' : '-', |
780 | (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', | |
781 | (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', | |
782 | (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', | |
5c5e854b SE |
783 | event->mmap2.filename); |
784 | } | |
785 | ||
b0a7d1a0 | 786 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 787 | union perf_event *event, |
162f0bef | 788 | struct perf_sample *sample, |
743eb868 | 789 | struct machine *machine) |
a1645ce1 | 790 | { |
162f0bef | 791 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
792 | } |
793 | ||
5c5e854b SE |
794 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
795 | union perf_event *event, | |
162f0bef | 796 | struct perf_sample *sample, |
5c5e854b SE |
797 | struct machine *machine) |
798 | { | |
162f0bef | 799 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
800 | } |
801 | ||
482ad897 ACM |
802 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
803 | { | |
804 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
805 | event->fork.pid, event->fork.tid, | |
806 | event->fork.ppid, event->fork.ptid); | |
807 | } | |
808 | ||
f62d3f0f | 809 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 810 | union perf_event *event, |
162f0bef | 811 | struct perf_sample *sample, |
f62d3f0f | 812 | struct machine *machine) |
62daacb5 | 813 | { |
162f0bef | 814 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 815 | } |
1ed091c4 | 816 | |
f62d3f0f ACM |
817 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
818 | union perf_event *event, | |
162f0bef | 819 | struct perf_sample *sample, |
f62d3f0f ACM |
820 | struct machine *machine) |
821 | { | |
162f0bef | 822 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
823 | } |
824 | ||
4a96f7a0 AH |
825 | size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) |
826 | { | |
827 | return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n", | |
828 | event->aux.aux_offset, event->aux.aux_size, | |
829 | event->aux.flags, | |
830 | event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", | |
831 | event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : ""); | |
832 | } | |
833 | ||
0ad21f68 AH |
834 | size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) |
835 | { | |
836 | return fprintf(fp, " pid: %u tid: %u\n", | |
837 | event->itrace_start.pid, event->itrace_start.tid); | |
838 | } | |
839 | ||
0286039f AH |
840 | size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) |
841 | { | |
842 | bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; | |
843 | const char *in_out = out ? "OUT" : "IN "; | |
844 | ||
845 | if (event->header.type == PERF_RECORD_SWITCH) | |
846 | return fprintf(fp, " %s\n", in_out); | |
847 | ||
848 | return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n", | |
849 | in_out, out ? "next" : "prev", | |
850 | event->context_switch.next_prev_pid, | |
851 | event->context_switch.next_prev_tid); | |
852 | } | |
853 | ||
482ad897 ACM |
854 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
855 | { | |
856 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
857 | perf_event__name(event->header.type)); | |
858 | ||
859 | switch (event->header.type) { | |
860 | case PERF_RECORD_COMM: | |
861 | ret += perf_event__fprintf_comm(event, fp); | |
862 | break; | |
863 | case PERF_RECORD_FORK: | |
864 | case PERF_RECORD_EXIT: | |
865 | ret += perf_event__fprintf_task(event, fp); | |
866 | break; | |
867 | case PERF_RECORD_MMAP: | |
868 | ret += perf_event__fprintf_mmap(event, fp); | |
869 | break; | |
5c5e854b SE |
870 | case PERF_RECORD_MMAP2: |
871 | ret += perf_event__fprintf_mmap2(event, fp); | |
872 | break; | |
4a96f7a0 AH |
873 | case PERF_RECORD_AUX: |
874 | ret += perf_event__fprintf_aux(event, fp); | |
875 | break; | |
0ad21f68 AH |
876 | case PERF_RECORD_ITRACE_START: |
877 | ret += perf_event__fprintf_itrace_start(event, fp); | |
878 | break; | |
0286039f AH |
879 | case PERF_RECORD_SWITCH: |
880 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
881 | ret += perf_event__fprintf_switch(event, fp); | |
882 | break; | |
482ad897 ACM |
883 | default: |
884 | ret += fprintf(fp, "\n"); | |
885 | } | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
b0a7d1a0 ACM |
890 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
891 | union perf_event *event, | |
162f0bef | 892 | struct perf_sample *sample, |
b0a7d1a0 | 893 | struct machine *machine) |
b83f920e | 894 | { |
162f0bef | 895 | return machine__process_event(machine, event, sample); |
b83f920e SD |
896 | } |
897 | ||
bb871a9c | 898 | void thread__find_addr_map(struct thread *thread, u8 cpumode, |
743eb868 | 899 | enum map_type type, u64 addr, |
326f59bf | 900 | struct addr_location *al) |
1ed091c4 | 901 | { |
93d5731d | 902 | struct map_groups *mg = thread->mg; |
bb871a9c | 903 | struct machine *machine = mg->machine; |
5b7ba82a | 904 | bool load_map = false; |
1ed091c4 | 905 | |
cc22e575 | 906 | al->machine = machine; |
316c7136 | 907 | al->thread = thread; |
1ed091c4 | 908 | al->addr = addr; |
a1645ce1 | 909 | al->cpumode = cpumode; |
b3cef7f6 | 910 | al->filtered = 0; |
1ed091c4 | 911 | |
743eb868 ACM |
912 | if (machine == NULL) { |
913 | al->map = NULL; | |
914 | return; | |
915 | } | |
916 | ||
a1645ce1 | 917 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 918 | al->level = 'k'; |
23346f21 | 919 | mg = &machine->kmaps; |
5b7ba82a | 920 | load_map = true; |
a1645ce1 | 921 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 922 | al->level = '.'; |
a1645ce1 ZY |
923 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
924 | al->level = 'g'; | |
23346f21 | 925 | mg = &machine->kmaps; |
5b7ba82a | 926 | load_map = true; |
fb50bb43 DY |
927 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
928 | al->level = 'u'; | |
a1645ce1 | 929 | } else { |
fb50bb43 | 930 | al->level = 'H'; |
1ed091c4 | 931 | al->map = NULL; |
a1645ce1 ZY |
932 | |
933 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
934 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
935 | !perf_guest) | |
b3cef7f6 | 936 | al->filtered |= (1 << HIST_FILTER__GUEST); |
a1645ce1 ZY |
937 | if ((cpumode == PERF_RECORD_MISC_USER || |
938 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
939 | !perf_host) | |
b3cef7f6 | 940 | al->filtered |= (1 << HIST_FILTER__HOST); |
a1645ce1 | 941 | |
1ed091c4 ACM |
942 | return; |
943 | } | |
944 | try_again: | |
9958e1f0 | 945 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
946 | if (al->map == NULL) { |
947 | /* | |
948 | * If this is outside of all known maps, and is a negative | |
949 | * address, try to look it up in the kernel dso, as it might be | |
950 | * a vsyscall or vdso (which executes in user-mode). | |
951 | * | |
952 | * XXX This is nasty, we should have a symbol list in the | |
953 | * "[vdso]" dso, but for now lets use the old trick of looking | |
954 | * in the whole kernel symbol list. | |
955 | */ | |
fbe2af45 AH |
956 | if (cpumode == PERF_RECORD_MISC_USER && machine && |
957 | mg != &machine->kmaps && | |
958 | machine__kernel_ip(machine, al->addr)) { | |
23346f21 | 959 | mg = &machine->kmaps; |
1f2a7069 | 960 | load_map = true; |
1ed091c4 ACM |
961 | goto try_again; |
962 | } | |
5b7ba82a AH |
963 | } else { |
964 | /* | |
965 | * Kernel maps might be changed when loading symbols so loading | |
966 | * must be done prior to using kernel maps. | |
967 | */ | |
968 | if (load_map) | |
326f59bf | 969 | map__load(al->map, machine->symbol_filter); |
1ed091c4 | 970 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 971 | } |
59ee68ec ACM |
972 | } |
973 | ||
bb871a9c | 974 | void thread__find_addr_location(struct thread *thread, |
743eb868 | 975 | u8 cpumode, enum map_type type, u64 addr, |
61710bde | 976 | struct addr_location *al) |
59ee68ec | 977 | { |
bb871a9c | 978 | thread__find_addr_map(thread, cpumode, type, addr, al); |
59ee68ec | 979 | if (al->map != NULL) |
61710bde | 980 | al->sym = map__find_symbol(al->map, al->addr, |
bb871a9c | 981 | thread->mg->machine->symbol_filter); |
59ee68ec ACM |
982 | else |
983 | al->sym = NULL; | |
1ed091c4 ACM |
984 | } |
985 | ||
b91fc39f ACM |
986 | /* |
987 | * Callers need to drop the reference to al->thread, obtained in | |
988 | * machine__findnew_thread() | |
989 | */ | |
8115d60c | 990 | int perf_event__preprocess_sample(const union perf_event *event, |
743eb868 | 991 | struct machine *machine, |
8115d60c | 992 | struct addr_location *al, |
e44baa3e | 993 | struct perf_sample *sample) |
1ed091c4 | 994 | { |
8115d60c | 995 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
ef89325f | 996 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
13ce34df | 997 | sample->tid); |
41a37e20 | 998 | |
1ed091c4 ACM |
999 | if (thread == NULL) |
1000 | return -1; | |
1001 | ||
b9c5143a | 1002 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 1003 | /* |
743eb868 | 1004 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
1005 | * |
1006 | * This should have happened earlier, when we processed the kernel MMAP | |
1007 | * events, but for older perf.data files there was no such thing, so do | |
1008 | * it now. | |
1009 | */ | |
1010 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
743eb868 ACM |
1011 | machine->vmlinux_maps[MAP__FUNCTION] == NULL) |
1012 | machine__create_kernel_maps(machine); | |
1ed091c4 | 1013 | |
bb871a9c | 1014 | thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al); |
1ed091c4 ACM |
1015 | dump_printf(" ...... dso: %s\n", |
1016 | al->map ? al->map->dso->long_name : | |
1017 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
466fa764 NK |
1018 | |
1019 | if (thread__is_filtered(thread)) | |
1020 | al->filtered |= (1 << HIST_FILTER__THREAD); | |
1021 | ||
96415e4d | 1022 | al->sym = NULL; |
8d50e5b4 | 1023 | al->cpu = sample->cpu; |
96415e4d ACM |
1024 | |
1025 | if (al->map) { | |
cb8f4e9a NK |
1026 | struct dso *dso = al->map->dso; |
1027 | ||
96415e4d | 1028 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
1029 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
1030 | dso->short_name) || | |
1031 | (dso->short_name != dso->long_name && | |
1032 | strlist__has_entry(symbol_conf.dso_list, | |
b3cef7f6 NK |
1033 | dso->long_name))))) { |
1034 | al->filtered |= (1 << HIST_FILTER__DSO); | |
b3cef7f6 | 1035 | } |
96415e4d | 1036 | |
e44baa3e AH |
1037 | al->sym = map__find_symbol(al->map, al->addr, |
1038 | machine->symbol_filter); | |
96415e4d | 1039 | } |
c410a338 | 1040 | |
1500b93b FT |
1041 | if (symbol_conf.sym_list && |
1042 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
b3cef7f6 NK |
1043 | al->sym->name))) { |
1044 | al->filtered |= (1 << HIST_FILTER__SYMBOL); | |
b3cef7f6 | 1045 | } |
c410a338 | 1046 | |
c410a338 | 1047 | return 0; |
1ed091c4 | 1048 | } |
9b0d2d87 | 1049 | |
b91fc39f ACM |
1050 | /* |
1051 | * The preprocess_sample method will return with reference counts for the | |
1052 | * in it, when done using (and perhaps getting ref counts if needing to | |
1053 | * keep a pointer to one of those entries) it must be paired with | |
1054 | * addr_location__put(), so that the refcounts can be decremented. | |
1055 | */ | |
1056 | void addr_location__put(struct addr_location *al) | |
1057 | { | |
1058 | thread__zput(al->thread); | |
1059 | } | |
1060 | ||
9b0d2d87 AH |
1061 | bool is_bts_event(struct perf_event_attr *attr) |
1062 | { | |
1063 | return attr->type == PERF_TYPE_HARDWARE && | |
1064 | (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && | |
1065 | attr->sample_period == 1; | |
1066 | } | |
1067 | ||
1068 | bool sample_addr_correlates_sym(struct perf_event_attr *attr) | |
1069 | { | |
1070 | if (attr->type == PERF_TYPE_SOFTWARE && | |
1071 | (attr->config == PERF_COUNT_SW_PAGE_FAULTS || | |
1072 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || | |
1073 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) | |
1074 | return true; | |
1075 | ||
1076 | if (is_bts_event(attr)) | |
1077 | return true; | |
1078 | ||
1079 | return false; | |
1080 | } | |
1081 | ||
1082 | void perf_event__preprocess_sample_addr(union perf_event *event, | |
1083 | struct perf_sample *sample, | |
9b0d2d87 AH |
1084 | struct thread *thread, |
1085 | struct addr_location *al) | |
1086 | { | |
1087 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1088 | ||
bb871a9c | 1089 | thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al); |
9b0d2d87 | 1090 | if (!al->map) |
bb871a9c | 1091 | thread__find_addr_map(thread, cpumode, MAP__VARIABLE, |
9b0d2d87 AH |
1092 | sample->addr, al); |
1093 | ||
1094 | al->cpu = sample->cpu; | |
1095 | al->sym = NULL; | |
1096 | ||
1097 | if (al->map) | |
1098 | al->sym = map__find_symbol(al->map, al->addr, NULL); | |
1099 | } |