Commit | Line | Data |
---|---|---|
234fbbf5 ACM |
1 | #include <linux/types.h> |
2 | #include "event.h" | |
3 | #include "debug.h" | |
ec913369 | 4 | #include "session.h" |
c410a338 | 5 | #include "sort.h" |
234fbbf5 | 6 | #include "string.h" |
c410a338 | 7 | #include "strlist.h" |
62daacb5 | 8 | #include "thread.h" |
234fbbf5 | 9 | |
c8446b9b ACM |
10 | const char *event__name[] = { |
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 | }; | |
26 | ||
234fbbf5 | 27 | static pid_t event__synthesize_comm(pid_t pid, int full, |
cf553114 | 28 | event__handler_t process, |
d8f66248 | 29 | struct perf_session *session) |
234fbbf5 ACM |
30 | { |
31 | event_t ev; | |
32 | char filename[PATH_MAX]; | |
33 | char bf[BUFSIZ]; | |
34 | FILE *fp; | |
35 | size_t size = 0; | |
36 | DIR *tasks; | |
37 | struct dirent dirent, *next; | |
38 | pid_t tgid = 0; | |
39 | ||
40 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
41 | ||
42 | fp = fopen(filename, "r"); | |
43 | if (fp == NULL) { | |
44 | out_race: | |
45 | /* | |
46 | * We raced with a task exiting - just return: | |
47 | */ | |
48 | pr_debug("couldn't open %s\n", filename); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | memset(&ev.comm, 0, sizeof(ev.comm)); | |
53 | while (!ev.comm.comm[0] || !ev.comm.pid) { | |
54 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
55 | goto out_failure; | |
56 | ||
57 | if (memcmp(bf, "Name:", 5) == 0) { | |
58 | char *name = bf + 5; | |
59 | while (*name && isspace(*name)) | |
60 | ++name; | |
61 | size = strlen(name) - 1; | |
62 | memcpy(ev.comm.comm, name, size++); | |
63 | } else if (memcmp(bf, "Tgid:", 5) == 0) { | |
64 | char *tgids = bf + 5; | |
65 | while (*tgids && isspace(*tgids)) | |
66 | ++tgids; | |
67 | tgid = ev.comm.pid = atoi(tgids); | |
68 | } | |
69 | } | |
70 | ||
71 | ev.comm.header.type = PERF_RECORD_COMM; | |
72 | size = ALIGN(size, sizeof(u64)); | |
73 | ev.comm.header.size = sizeof(ev.comm) - (sizeof(ev.comm.comm) - size); | |
74 | ||
75 | if (!full) { | |
76 | ev.comm.tid = pid; | |
77 | ||
d8f66248 | 78 | process(&ev, session); |
234fbbf5 ACM |
79 | goto out_fclose; |
80 | } | |
81 | ||
82 | snprintf(filename, sizeof(filename), "/proc/%d/task", pid); | |
83 | ||
84 | tasks = opendir(filename); | |
85 | if (tasks == NULL) | |
86 | goto out_race; | |
87 | ||
88 | while (!readdir_r(tasks, &dirent, &next) && next) { | |
89 | char *end; | |
90 | pid = strtol(dirent.d_name, &end, 10); | |
91 | if (*end) | |
92 | continue; | |
93 | ||
94 | ev.comm.tid = pid; | |
95 | ||
d8f66248 | 96 | process(&ev, session); |
234fbbf5 ACM |
97 | } |
98 | closedir(tasks); | |
99 | ||
100 | out_fclose: | |
101 | fclose(fp); | |
102 | return tgid; | |
103 | ||
104 | out_failure: | |
105 | pr_warning("couldn't get COMM and pgid, malformed %s\n", filename); | |
106 | return -1; | |
107 | } | |
108 | ||
109 | static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, | |
cf553114 | 110 | event__handler_t process, |
d8f66248 | 111 | struct perf_session *session) |
234fbbf5 ACM |
112 | { |
113 | char filename[PATH_MAX]; | |
114 | FILE *fp; | |
115 | ||
116 | snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); | |
117 | ||
118 | fp = fopen(filename, "r"); | |
119 | if (fp == NULL) { | |
120 | /* | |
121 | * We raced with a task exiting - just return: | |
122 | */ | |
123 | pr_debug("couldn't open %s\n", filename); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | while (1) { | |
128 | char bf[BUFSIZ], *pbf = bf; | |
129 | event_t ev = { | |
18c3daa4 ACM |
130 | .header = { |
131 | .type = PERF_RECORD_MMAP, | |
a1645ce1 ZY |
132 | /* |
133 | * Just like the kernel, see __perf_event_mmap | |
134 | * in kernel/perf_event.c | |
135 | */ | |
136 | .misc = PERF_RECORD_MISC_USER, | |
18c3daa4 | 137 | }, |
234fbbf5 ACM |
138 | }; |
139 | int n; | |
140 | size_t size; | |
141 | if (fgets(bf, sizeof(bf), fp) == NULL) | |
142 | break; | |
143 | ||
144 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ | |
145 | n = hex2u64(pbf, &ev.mmap.start); | |
146 | if (n < 0) | |
147 | continue; | |
148 | pbf += n + 1; | |
149 | n = hex2u64(pbf, &ev.mmap.len); | |
150 | if (n < 0) | |
151 | continue; | |
152 | pbf += n + 3; | |
153 | if (*pbf == 'x') { /* vm_exec */ | |
4af8b35d | 154 | u64 vm_pgoff; |
234fbbf5 ACM |
155 | char *execname = strchr(bf, '/'); |
156 | ||
157 | /* Catch VDSO */ | |
158 | if (execname == NULL) | |
159 | execname = strstr(bf, "[vdso]"); | |
160 | ||
161 | if (execname == NULL) | |
162 | continue; | |
163 | ||
4af8b35d AB |
164 | pbf += 3; |
165 | n = hex2u64(pbf, &vm_pgoff); | |
166 | /* pgoff is in bytes, not pages */ | |
167 | if (n >= 0) | |
168 | ev.mmap.pgoff = vm_pgoff << getpagesize(); | |
169 | else | |
170 | ev.mmap.pgoff = 0; | |
171 | ||
234fbbf5 ACM |
172 | size = strlen(execname); |
173 | execname[size - 1] = '\0'; /* Remove \n */ | |
174 | memcpy(ev.mmap.filename, execname, size); | |
175 | size = ALIGN(size, sizeof(u64)); | |
176 | ev.mmap.len -= ev.mmap.start; | |
177 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
178 | (sizeof(ev.mmap.filename) - size)); | |
179 | ev.mmap.pid = tgid; | |
180 | ev.mmap.tid = pid; | |
181 | ||
d8f66248 | 182 | process(&ev, session); |
234fbbf5 ACM |
183 | } |
184 | } | |
185 | ||
186 | fclose(fp); | |
187 | return 0; | |
188 | } | |
189 | ||
b7cece76 | 190 | int event__synthesize_modules(event__handler_t process, |
a1645ce1 | 191 | struct perf_session *session, |
23346f21 | 192 | struct machine *machine) |
b7cece76 ACM |
193 | { |
194 | struct rb_node *nd; | |
23346f21 | 195 | struct map_groups *kmaps = &machine->kmaps; |
a1645ce1 | 196 | u16 misc; |
b7cece76 | 197 | |
a1645ce1 ZY |
198 | /* |
199 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
200 | * __perf_event_mmap | |
201 | */ | |
23346f21 | 202 | if (machine__is_host(machine)) |
a1645ce1 ZY |
203 | misc = PERF_RECORD_MISC_KERNEL; |
204 | else | |
205 | misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
206 | ||
207 | for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); | |
b7cece76 ACM |
208 | nd; nd = rb_next(nd)) { |
209 | event_t ev; | |
210 | size_t size; | |
211 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
212 | ||
213 | if (pos->dso->kernel) | |
214 | continue; | |
215 | ||
216 | size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); | |
217 | memset(&ev, 0, sizeof(ev)); | |
a1645ce1 | 218 | ev.mmap.header.misc = misc; |
b7cece76 ACM |
219 | ev.mmap.header.type = PERF_RECORD_MMAP; |
220 | ev.mmap.header.size = (sizeof(ev.mmap) - | |
221 | (sizeof(ev.mmap.filename) - size)); | |
222 | ev.mmap.start = pos->start; | |
223 | ev.mmap.len = pos->end - pos->start; | |
23346f21 | 224 | ev.mmap.pid = machine->pid; |
b7cece76 ACM |
225 | |
226 | memcpy(ev.mmap.filename, pos->dso->long_name, | |
227 | pos->dso->long_name_len + 1); | |
228 | process(&ev, session); | |
229 | } | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
cf553114 | 234 | int event__synthesize_thread(pid_t pid, event__handler_t process, |
d8f66248 | 235 | struct perf_session *session) |
234fbbf5 | 236 | { |
d8f66248 | 237 | pid_t tgid = event__synthesize_comm(pid, 1, process, session); |
234fbbf5 ACM |
238 | if (tgid == -1) |
239 | return -1; | |
d8f66248 | 240 | return event__synthesize_mmap_events(pid, tgid, process, session); |
234fbbf5 ACM |
241 | } |
242 | ||
cf553114 | 243 | void event__synthesize_threads(event__handler_t process, |
d8f66248 | 244 | struct perf_session *session) |
234fbbf5 ACM |
245 | { |
246 | DIR *proc; | |
247 | struct dirent dirent, *next; | |
248 | ||
249 | proc = opendir("/proc"); | |
250 | ||
251 | while (!readdir_r(proc, &dirent, &next) && next) { | |
252 | char *end; | |
253 | pid_t pid = strtol(dirent.d_name, &end, 10); | |
254 | ||
255 | if (*end) /* only interested in proper numerical dirents */ | |
256 | continue; | |
257 | ||
d8f66248 | 258 | event__synthesize_thread(pid, process, session); |
234fbbf5 ACM |
259 | } |
260 | ||
261 | closedir(proc); | |
262 | } | |
62daacb5 | 263 | |
56b03f3c ACM |
264 | struct process_symbol_args { |
265 | const char *name; | |
266 | u64 start; | |
267 | }; | |
268 | ||
269 | static int find_symbol_cb(void *arg, const char *name, char type, u64 start) | |
270 | { | |
271 | struct process_symbol_args *args = arg; | |
272 | ||
881516eb ACM |
273 | /* |
274 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
275 | * an 'A' to the same address as "_stext". | |
276 | */ | |
277 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
278 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
279 | return 0; |
280 | ||
281 | args->start = start; | |
282 | return 1; | |
283 | } | |
284 | ||
cf553114 | 285 | int event__synthesize_kernel_mmap(event__handler_t process, |
56b03f3c | 286 | struct perf_session *session, |
23346f21 | 287 | struct machine *machine, |
56b03f3c ACM |
288 | const char *symbol_name) |
289 | { | |
290 | size_t size; | |
a1645ce1 ZY |
291 | const char *filename, *mmap_name; |
292 | char path[PATH_MAX]; | |
293 | char name_buff[PATH_MAX]; | |
294 | struct map *map; | |
295 | ||
56b03f3c | 296 | event_t ev = { |
18c3daa4 ACM |
297 | .header = { |
298 | .type = PERF_RECORD_MMAP, | |
18c3daa4 | 299 | }, |
56b03f3c ACM |
300 | }; |
301 | /* | |
302 | * We should get this from /sys/kernel/sections/.text, but till that is | |
303 | * available use this, and after it is use this as a fallback for older | |
304 | * kernels. | |
305 | */ | |
306 | struct process_symbol_args args = { .name = symbol_name, }; | |
307 | ||
48ea8f54 | 308 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 309 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
310 | /* |
311 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
312 | * see kernel/perf_event.c __perf_event_mmap | |
313 | */ | |
314 | ev.header.misc = PERF_RECORD_MISC_KERNEL; | |
315 | filename = "/proc/kallsyms"; | |
316 | } else { | |
317 | ev.header.misc = PERF_RECORD_MISC_GUEST_KERNEL; | |
23346f21 | 318 | if (machine__is_default_guest(machine)) |
a1645ce1 ZY |
319 | filename = (char *) symbol_conf.default_guest_kallsyms; |
320 | else { | |
23346f21 | 321 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
a1645ce1 ZY |
322 | filename = path; |
323 | } | |
324 | } | |
325 | ||
326 | if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) | |
56b03f3c ACM |
327 | return -ENOENT; |
328 | ||
23346f21 | 329 | map = machine->vmlinux_maps[MAP__FUNCTION]; |
56b03f3c | 330 | size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename), |
a1645ce1 | 331 | "%s%s", mmap_name, symbol_name) + 1; |
56b03f3c | 332 | size = ALIGN(size, sizeof(u64)); |
a1645ce1 ZY |
333 | ev.mmap.header.size = (sizeof(ev.mmap) - |
334 | (sizeof(ev.mmap.filename) - size)); | |
b7cece76 | 335 | ev.mmap.pgoff = args.start; |
a1645ce1 ZY |
336 | ev.mmap.start = map->start; |
337 | ev.mmap.len = map->end - ev.mmap.start; | |
23346f21 | 338 | ev.mmap.pid = machine->pid; |
56b03f3c ACM |
339 | |
340 | return process(&ev, session); | |
341 | } | |
342 | ||
d599db3f ACM |
343 | static void thread__comm_adjust(struct thread *self) |
344 | { | |
345 | char *comm = self->comm; | |
346 | ||
347 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
348 | (!symbol_conf.comm_list || | |
349 | strlist__has_entry(symbol_conf.comm_list, comm))) { | |
350 | unsigned int slen = strlen(comm); | |
351 | ||
352 | if (slen > comms__col_width) { | |
353 | comms__col_width = slen; | |
354 | threads__col_width = slen + 6; | |
355 | } | |
356 | } | |
357 | } | |
358 | ||
359 | static int thread__set_comm_adjust(struct thread *self, const char *comm) | |
360 | { | |
361 | int ret = thread__set_comm(self, comm); | |
362 | ||
363 | if (ret) | |
364 | return ret; | |
365 | ||
366 | thread__comm_adjust(self); | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
b3165f41 | 371 | int event__process_comm(event_t *self, struct perf_session *session) |
62daacb5 | 372 | { |
13eb04fd | 373 | struct thread *thread = perf_session__findnew(session, self->comm.tid); |
62daacb5 | 374 | |
13eb04fd | 375 | dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid); |
62daacb5 | 376 | |
d599db3f | 377 | if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) { |
62daacb5 ACM |
378 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
379 | return -1; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
f823e441 | 385 | int event__process_lost(event_t *self, struct perf_session *session) |
62daacb5 ACM |
386 | { |
387 | dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost); | |
cee75ac7 | 388 | session->hists.stats.total_lost += self->lost.lost; |
62daacb5 ACM |
389 | return 0; |
390 | } | |
391 | ||
a1645ce1 ZY |
392 | static void event_set_kernel_mmap_len(struct map **maps, event_t *self) |
393 | { | |
394 | maps[MAP__FUNCTION]->start = self->mmap.start; | |
395 | maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; | |
396 | /* | |
397 | * Be a bit paranoid here, some perf.data file came with | |
398 | * a zero sized synthesized MMAP event for the kernel. | |
399 | */ | |
400 | if (maps[MAP__FUNCTION]->end == 0) | |
401 | maps[MAP__FUNCTION]->end = ~0UL; | |
402 | } | |
403 | ||
404 | static int event__process_kernel_mmap(event_t *self, | |
405 | struct perf_session *session) | |
62daacb5 | 406 | { |
56b03f3c | 407 | struct map *map; |
a1645ce1 | 408 | char kmmap_prefix[PATH_MAX]; |
23346f21 | 409 | struct machine *machine; |
a1645ce1 ZY |
410 | enum dso_kernel_type kernel_type; |
411 | bool is_kernel_mmap; | |
412 | ||
23346f21 ACM |
413 | machine = perf_session__findnew_machine(session, self->mmap.pid); |
414 | if (!machine) { | |
415 | pr_err("Can't find id %d's machine\n", self->mmap.pid); | |
a1645ce1 ZY |
416 | goto out_problem; |
417 | } | |
62daacb5 | 418 | |
48ea8f54 | 419 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
23346f21 | 420 | if (machine__is_host(machine)) |
a1645ce1 ZY |
421 | kernel_type = DSO_TYPE_KERNEL; |
422 | else | |
423 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
62daacb5 | 424 | |
a1645ce1 ZY |
425 | is_kernel_mmap = memcmp(self->mmap.filename, |
426 | kmmap_prefix, | |
427 | strlen(kmmap_prefix)) == 0; | |
428 | if (self->mmap.filename[0] == '/' || | |
429 | (!is_kernel_mmap && self->mmap.filename[0] == '[')) { | |
b7cece76 | 430 | |
a1645ce1 ZY |
431 | char short_module_name[1024]; |
432 | char *name, *dot; | |
b7cece76 | 433 | |
a1645ce1 ZY |
434 | if (self->mmap.filename[0] == '/') { |
435 | name = strrchr(self->mmap.filename, '/'); | |
b7cece76 ACM |
436 | if (name == NULL) |
437 | goto out_problem; | |
438 | ||
439 | ++name; /* skip / */ | |
440 | dot = strrchr(name, '.'); | |
441 | if (dot == NULL) | |
442 | goto out_problem; | |
b7cece76 | 443 | snprintf(short_module_name, sizeof(short_module_name), |
a1645ce1 | 444 | "[%.*s]", (int)(dot - name), name); |
b7cece76 | 445 | strxfrchar(short_module_name, '-', '_'); |
a1645ce1 ZY |
446 | } else |
447 | strcpy(short_module_name, self->mmap.filename); | |
448 | ||
d28c6223 ACM |
449 | map = machine__new_module(machine, self->mmap.start, |
450 | self->mmap.filename); | |
a1645ce1 ZY |
451 | if (map == NULL) |
452 | goto out_problem; | |
453 | ||
454 | name = strdup(short_module_name); | |
455 | if (name == NULL) | |
456 | goto out_problem; | |
457 | ||
458 | map->dso->short_name = name; | |
459 | map->end = map->start + self->mmap.len; | |
460 | } else if (is_kernel_mmap) { | |
461 | const char *symbol_name = (self->mmap.filename + | |
462 | strlen(kmmap_prefix)); | |
463 | /* | |
464 | * Should be there already, from the build-id table in | |
465 | * the header. | |
466 | */ | |
23346f21 ACM |
467 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, |
468 | kmmap_prefix); | |
a1645ce1 ZY |
469 | if (kernel == NULL) |
470 | goto out_problem; | |
471 | ||
472 | kernel->kernel = kernel_type; | |
d28c6223 | 473 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
a1645ce1 ZY |
474 | goto out_problem; |
475 | ||
23346f21 ACM |
476 | event_set_kernel_mmap_len(machine->vmlinux_maps, self); |
477 | perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
478 | symbol_name, | |
479 | self->mmap.pgoff); | |
480 | if (machine__is_default_guest(machine)) { | |
b7cece76 | 481 | /* |
a1645ce1 | 482 | * preload dso of guest kernel and modules |
b7cece76 | 483 | */ |
23346f21 ACM |
484 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
485 | NULL); | |
a1645ce1 ZY |
486 | } |
487 | } | |
488 | return 0; | |
489 | out_problem: | |
490 | return -1; | |
491 | } | |
b7cece76 | 492 | |
a1645ce1 ZY |
493 | int event__process_mmap(event_t *self, struct perf_session *session) |
494 | { | |
23346f21 | 495 | struct machine *machine; |
a1645ce1 ZY |
496 | struct thread *thread; |
497 | struct map *map; | |
498 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
499 | int ret = 0; | |
b7cece76 | 500 | |
a1645ce1 ZY |
501 | dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n", |
502 | self->mmap.pid, self->mmap.tid, self->mmap.start, | |
503 | self->mmap.len, self->mmap.pgoff, self->mmap.filename); | |
504 | ||
505 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
506 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
507 | ret = event__process_kernel_mmap(self, session); | |
508 | if (ret < 0) | |
509 | goto out_problem; | |
56b03f3c ACM |
510 | return 0; |
511 | } | |
512 | ||
23346f21 | 513 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
514 | if (machine == NULL) |
515 | goto out_problem; | |
516 | thread = perf_session__findnew(session, self->mmap.pid); | |
23346f21 | 517 | map = map__new(&machine->user_dsos, self->mmap.start, |
a1645ce1 ZY |
518 | self->mmap.len, self->mmap.pgoff, |
519 | self->mmap.pid, self->mmap.filename, | |
520 | MAP__FUNCTION, session->cwd, session->cwdlen); | |
56b03f3c | 521 | |
62daacb5 | 522 | if (thread == NULL || map == NULL) |
b7cece76 ACM |
523 | goto out_problem; |
524 | ||
525 | thread__insert_map(thread, map); | |
526 | return 0; | |
62daacb5 | 527 | |
b7cece76 ACM |
528 | out_problem: |
529 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
62daacb5 ACM |
530 | return 0; |
531 | } | |
532 | ||
b3165f41 | 533 | int event__process_task(event_t *self, struct perf_session *session) |
62daacb5 | 534 | { |
dd833d71 FW |
535 | struct thread *thread = perf_session__findnew(session, self->fork.tid); |
536 | struct thread *parent = perf_session__findnew(session, self->fork.ptid); | |
62daacb5 ACM |
537 | |
538 | dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid, | |
539 | self->fork.ppid, self->fork.ptid); | |
62daacb5 ACM |
540 | |
541 | if (self->header.type == PERF_RECORD_EXIT) | |
542 | return 0; | |
543 | ||
544 | if (thread == NULL || parent == NULL || | |
545 | thread__fork(thread, parent) < 0) { | |
546 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); | |
547 | return -1; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
1ed091c4 | 552 | |
59ee68ec ACM |
553 | void thread__find_addr_map(struct thread *self, |
554 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 555 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec | 556 | struct addr_location *al) |
1ed091c4 | 557 | { |
9958e1f0 | 558 | struct map_groups *mg = &self->mg; |
23346f21 | 559 | struct machine *machine = NULL; |
1ed091c4 | 560 | |
9958e1f0 | 561 | al->thread = self; |
1ed091c4 | 562 | al->addr = addr; |
a1645ce1 ZY |
563 | al->cpumode = cpumode; |
564 | al->filtered = false; | |
1ed091c4 | 565 | |
a1645ce1 | 566 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 567 | al->level = 'k'; |
23346f21 | 568 | machine = perf_session__find_host_machine(session); |
4cc49458 ACM |
569 | if (machine == NULL) { |
570 | al->map = NULL; | |
571 | return; | |
572 | } | |
23346f21 | 573 | mg = &machine->kmaps; |
a1645ce1 | 574 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 575 | al->level = '.'; |
23346f21 | 576 | machine = perf_session__find_host_machine(session); |
a1645ce1 ZY |
577 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
578 | al->level = 'g'; | |
23346f21 | 579 | machine = perf_session__find_machine(session, pid); |
4cc49458 | 580 | if (machine == NULL) { |
a1645ce1 ZY |
581 | al->map = NULL; |
582 | return; | |
583 | } | |
23346f21 | 584 | mg = &machine->kmaps; |
a1645ce1 ZY |
585 | } else { |
586 | /* | |
587 | * 'u' means guest os user space. | |
588 | * TODO: We don't support guest user space. Might support late. | |
589 | */ | |
590 | if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) | |
591 | al->level = 'u'; | |
592 | else | |
593 | al->level = 'H'; | |
1ed091c4 | 594 | al->map = NULL; |
a1645ce1 ZY |
595 | |
596 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
597 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
598 | !perf_guest) | |
599 | al->filtered = true; | |
600 | if ((cpumode == PERF_RECORD_MISC_USER || | |
601 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
602 | !perf_host) | |
603 | al->filtered = true; | |
604 | ||
1ed091c4 ACM |
605 | return; |
606 | } | |
607 | try_again: | |
9958e1f0 | 608 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
609 | if (al->map == NULL) { |
610 | /* | |
611 | * If this is outside of all known maps, and is a negative | |
612 | * address, try to look it up in the kernel dso, as it might be | |
613 | * a vsyscall or vdso (which executes in user-mode). | |
614 | * | |
615 | * XXX This is nasty, we should have a symbol list in the | |
616 | * "[vdso]" dso, but for now lets use the old trick of looking | |
617 | * in the whole kernel symbol list. | |
618 | */ | |
a1645ce1 | 619 | if ((long long)al->addr < 0 && |
23346f21 ACM |
620 | cpumode == PERF_RECORD_MISC_KERNEL && |
621 | machine && mg != &machine->kmaps) { | |
622 | mg = &machine->kmaps; | |
1ed091c4 ACM |
623 | goto try_again; |
624 | } | |
59ee68ec | 625 | } else |
1ed091c4 | 626 | al->addr = al->map->map_ip(al->map, al->addr); |
59ee68ec ACM |
627 | } |
628 | ||
629 | void thread__find_addr_location(struct thread *self, | |
630 | struct perf_session *session, u8 cpumode, | |
a1645ce1 | 631 | enum map_type type, pid_t pid, u64 addr, |
59ee68ec ACM |
632 | struct addr_location *al, |
633 | symbol_filter_t filter) | |
634 | { | |
a1645ce1 | 635 | thread__find_addr_map(self, session, cpumode, type, pid, addr, al); |
59ee68ec | 636 | if (al->map != NULL) |
9de89fe7 | 637 | al->sym = map__find_symbol(al->map, al->addr, filter); |
59ee68ec ACM |
638 | else |
639 | al->sym = NULL; | |
1ed091c4 ACM |
640 | } |
641 | ||
c410a338 ACM |
642 | static void dso__calc_col_width(struct dso *self) |
643 | { | |
644 | if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
645 | (!symbol_conf.dso_list || | |
646 | strlist__has_entry(symbol_conf.dso_list, self->name))) { | |
9890948d ACM |
647 | u16 slen = self->short_name_len; |
648 | if (verbose) | |
649 | slen = self->long_name_len; | |
650 | if (dsos__col_width < slen) | |
c410a338 ACM |
651 | dsos__col_width = slen; |
652 | } | |
653 | ||
654 | self->slen_calculated = 1; | |
655 | } | |
656 | ||
b3165f41 ACM |
657 | int event__preprocess_sample(const event_t *self, struct perf_session *session, |
658 | struct addr_location *al, symbol_filter_t filter) | |
1ed091c4 ACM |
659 | { |
660 | u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
b3165f41 | 661 | struct thread *thread = perf_session__findnew(session, self->ip.pid); |
1ed091c4 ACM |
662 | |
663 | if (thread == NULL) | |
664 | return -1; | |
665 | ||
c410a338 ACM |
666 | if (symbol_conf.comm_list && |
667 | !strlist__has_entry(symbol_conf.comm_list, thread->comm)) | |
668 | goto out_filtered; | |
669 | ||
1ed091c4 | 670 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1f626bc3 ACM |
671 | /* |
672 | * Have we already created the kernel maps for the host machine? | |
673 | * | |
674 | * This should have happened earlier, when we processed the kernel MMAP | |
675 | * events, but for older perf.data files there was no such thing, so do | |
676 | * it now. | |
677 | */ | |
678 | if (cpumode == PERF_RECORD_MISC_KERNEL && | |
679 | session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) | |
680 | machine__create_kernel_maps(&session->host_machine); | |
1ed091c4 | 681 | |
96415e4d | 682 | thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, |
a1645ce1 | 683 | self->ip.pid, self->ip.ip, al); |
1ed091c4 ACM |
684 | dump_printf(" ...... dso: %s\n", |
685 | al->map ? al->map->dso->long_name : | |
686 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
96415e4d ACM |
687 | al->sym = NULL; |
688 | ||
689 | if (al->map) { | |
690 | if (symbol_conf.dso_list && | |
691 | (!al->map || !al->map->dso || | |
692 | !(strlist__has_entry(symbol_conf.dso_list, | |
693 | al->map->dso->short_name) || | |
694 | (al->map->dso->short_name != al->map->dso->long_name && | |
695 | strlist__has_entry(symbol_conf.dso_list, | |
696 | al->map->dso->long_name))))) | |
697 | goto out_filtered; | |
698 | /* | |
699 | * We have to do this here as we may have a dso with no symbol | |
700 | * hit that has a name longer than the ones with symbols | |
701 | * sampled. | |
702 | */ | |
703 | if (!sort_dso.elide && !al->map->dso->slen_calculated) | |
704 | dso__calc_col_width(al->map->dso); | |
705 | ||
706 | al->sym = map__find_symbol(al->map, al->addr, filter); | |
3ceb0d44 ACM |
707 | } else { |
708 | const unsigned int unresolved_col_width = BITS_PER_LONG / 4; | |
709 | ||
710 | if (dsos__col_width < unresolved_col_width && | |
711 | !symbol_conf.col_width_list_str && !symbol_conf.field_sep && | |
712 | !symbol_conf.dso_list) | |
713 | dsos__col_width = unresolved_col_width; | |
96415e4d | 714 | } |
c410a338 ACM |
715 | |
716 | if (symbol_conf.sym_list && al->sym && | |
717 | !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) | |
718 | goto out_filtered; | |
719 | ||
c410a338 ACM |
720 | return 0; |
721 | ||
722 | out_filtered: | |
723 | al->filtered = true; | |
1ed091c4 ACM |
724 | return 0; |
725 | } | |
180f95e2 OH |
726 | |
727 | int event__parse_sample(event_t *event, u64 type, struct sample_data *data) | |
728 | { | |
729 | u64 *array = event->sample.array; | |
730 | ||
731 | if (type & PERF_SAMPLE_IP) { | |
732 | data->ip = event->ip.ip; | |
733 | array++; | |
734 | } | |
735 | ||
736 | if (type & PERF_SAMPLE_TID) { | |
737 | u32 *p = (u32 *)array; | |
738 | data->pid = p[0]; | |
739 | data->tid = p[1]; | |
740 | array++; | |
741 | } | |
742 | ||
743 | if (type & PERF_SAMPLE_TIME) { | |
744 | data->time = *array; | |
745 | array++; | |
746 | } | |
747 | ||
748 | if (type & PERF_SAMPLE_ADDR) { | |
749 | data->addr = *array; | |
750 | array++; | |
751 | } | |
752 | ||
02bf60aa | 753 | data->id = -1ULL; |
180f95e2 OH |
754 | if (type & PERF_SAMPLE_ID) { |
755 | data->id = *array; | |
756 | array++; | |
757 | } | |
758 | ||
759 | if (type & PERF_SAMPLE_STREAM_ID) { | |
760 | data->stream_id = *array; | |
761 | array++; | |
762 | } | |
763 | ||
764 | if (type & PERF_SAMPLE_CPU) { | |
765 | u32 *p = (u32 *)array; | |
766 | data->cpu = *p; | |
767 | array++; | |
768 | } | |
769 | ||
770 | if (type & PERF_SAMPLE_PERIOD) { | |
771 | data->period = *array; | |
772 | array++; | |
773 | } | |
774 | ||
775 | if (type & PERF_SAMPLE_READ) { | |
776 | pr_debug("PERF_SAMPLE_READ is unsuported for now\n"); | |
777 | return -1; | |
778 | } | |
779 | ||
780 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
781 | data->callchain = (struct ip_callchain *)array; | |
782 | array += 1 + data->callchain->nr; | |
783 | } | |
784 | ||
785 | if (type & PERF_SAMPLE_RAW) { | |
786 | u32 *p = (u32 *)array; | |
787 | data->raw_size = *p; | |
788 | p++; | |
789 | data->raw_data = p; | |
790 | } | |
791 | ||
792 | return 0; | |
793 | } |