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