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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / tools / perf / util / event.c
1 #include <linux/types.h>
2 #include "event.h"
3 #include "debug.h"
4 #include "session.h"
5 #include "sort.h"
6 #include "string.h"
7 #include "strlist.h"
8 #include "thread.h"
9
10 static 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 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
26 };
27
28 const char *event__get_event_name(unsigned int id)
29 {
30 if (id >= ARRAY_SIZE(event__name))
31 return "INVALID";
32 if (!event__name[id])
33 return "UNKNOWN";
34 return event__name[id];
35 }
36
37 static struct sample_data synth_sample = {
38 .pid = -1,
39 .tid = -1,
40 .time = -1,
41 .stream_id = -1,
42 .cpu = -1,
43 .period = 1,
44 };
45
46 static pid_t event__synthesize_comm(event_t *event, pid_t pid, int full,
47 event__handler_t process,
48 struct perf_session *session)
49 {
50 char filename[PATH_MAX];
51 char bf[BUFSIZ];
52 FILE *fp;
53 size_t size = 0;
54 DIR *tasks;
55 struct dirent dirent, *next;
56 pid_t tgid = 0;
57
58 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
59
60 fp = fopen(filename, "r");
61 if (fp == NULL) {
62 out_race:
63 /*
64 * We raced with a task exiting - just return:
65 */
66 pr_debug("couldn't open %s\n", filename);
67 return 0;
68 }
69
70 memset(&event->comm, 0, sizeof(event->comm));
71
72 while (!event->comm.comm[0] || !event->comm.pid) {
73 if (fgets(bf, sizeof(bf), fp) == NULL) {
74 pr_warning("couldn't get COMM and pgid, malformed %s\n", filename);
75 goto out;
76 }
77
78 if (memcmp(bf, "Name:", 5) == 0) {
79 char *name = bf + 5;
80 while (*name && isspace(*name))
81 ++name;
82 size = strlen(name) - 1;
83 memcpy(event->comm.comm, name, size++);
84 } else if (memcmp(bf, "Tgid:", 5) == 0) {
85 char *tgids = bf + 5;
86 while (*tgids && isspace(*tgids))
87 ++tgids;
88 tgid = event->comm.pid = atoi(tgids);
89 }
90 }
91
92 event->comm.header.type = PERF_RECORD_COMM;
93 size = ALIGN(size, sizeof(u64));
94 memset(event->comm.comm + size, 0, session->id_hdr_size);
95 event->comm.header.size = (sizeof(event->comm) -
96 (sizeof(event->comm.comm) - size) +
97 session->id_hdr_size);
98 if (!full) {
99 event->comm.tid = pid;
100
101 process(event, &synth_sample, session);
102 goto out;
103 }
104
105 snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
106
107 tasks = opendir(filename);
108 if (tasks == NULL)
109 goto out_race;
110
111 while (!readdir_r(tasks, &dirent, &next) && next) {
112 char *end;
113 pid = strtol(dirent.d_name, &end, 10);
114 if (*end)
115 continue;
116
117 event->comm.tid = pid;
118
119 process(event, &synth_sample, session);
120 }
121
122 closedir(tasks);
123 out:
124 fclose(fp);
125
126 return tgid;
127 }
128
129 static int event__synthesize_mmap_events(event_t *event, pid_t pid, pid_t tgid,
130 event__handler_t process,
131 struct perf_session *session)
132 {
133 char filename[PATH_MAX];
134 FILE *fp;
135
136 snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
137
138 fp = fopen(filename, "r");
139 if (fp == NULL) {
140 /*
141 * We raced with a task exiting - just return:
142 */
143 pr_debug("couldn't open %s\n", filename);
144 return -1;
145 }
146
147 event->header.type = PERF_RECORD_MMAP;
148 /*
149 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
150 */
151 event->header.misc = PERF_RECORD_MISC_USER;
152
153 while (1) {
154 char bf[BUFSIZ], *pbf = bf;
155 int n;
156 size_t size;
157 if (fgets(bf, sizeof(bf), fp) == NULL)
158 break;
159
160 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
161 n = hex2u64(pbf, &event->mmap.start);
162 if (n < 0)
163 continue;
164 pbf += n + 1;
165 n = hex2u64(pbf, &event->mmap.len);
166 if (n < 0)
167 continue;
168 pbf += n + 3;
169 if (*pbf == 'x') { /* vm_exec */
170 char *execname = strchr(bf, '/');
171
172 /* Catch VDSO */
173 if (execname == NULL)
174 execname = strstr(bf, "[vdso]");
175
176 if (execname == NULL)
177 continue;
178
179 pbf += 3;
180 n = hex2u64(pbf, &event->mmap.pgoff);
181
182 size = strlen(execname);
183 execname[size - 1] = '\0'; /* Remove \n */
184 memcpy(event->mmap.filename, execname, size);
185 size = ALIGN(size, sizeof(u64));
186 event->mmap.len -= event->mmap.start;
187 event->mmap.header.size = (sizeof(event->mmap) -
188 (sizeof(event->mmap.filename) - size));
189 memset(event->mmap.filename + size, 0, session->id_hdr_size);
190 event->mmap.header.size += session->id_hdr_size;
191 event->mmap.pid = tgid;
192 event->mmap.tid = pid;
193
194 process(event, &synth_sample, session);
195 }
196 }
197
198 fclose(fp);
199 return 0;
200 }
201
202 int event__synthesize_modules(event__handler_t process,
203 struct perf_session *session,
204 struct machine *machine)
205 {
206 struct rb_node *nd;
207 struct map_groups *kmaps = &machine->kmaps;
208 event_t *event = zalloc(sizeof(event->mmap) + session->id_hdr_size);
209
210 if (event == NULL) {
211 pr_debug("Not enough memory synthesizing mmap event "
212 "for kernel modules\n");
213 return -1;
214 }
215
216 event->header.type = PERF_RECORD_MMAP;
217
218 /*
219 * kernel uses 0 for user space maps, see kernel/perf_event.c
220 * __perf_event_mmap
221 */
222 if (machine__is_host(machine))
223 event->header.misc = PERF_RECORD_MISC_KERNEL;
224 else
225 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
226
227 for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
228 nd; nd = rb_next(nd)) {
229 size_t size;
230 struct map *pos = rb_entry(nd, struct map, rb_node);
231
232 if (pos->dso->kernel)
233 continue;
234
235 size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
236 event->mmap.header.type = PERF_RECORD_MMAP;
237 event->mmap.header.size = (sizeof(event->mmap) -
238 (sizeof(event->mmap.filename) - size));
239 memset(event->mmap.filename + size, 0, session->id_hdr_size);
240 event->mmap.header.size += session->id_hdr_size;
241 event->mmap.start = pos->start;
242 event->mmap.len = pos->end - pos->start;
243 event->mmap.pid = machine->pid;
244
245 memcpy(event->mmap.filename, pos->dso->long_name,
246 pos->dso->long_name_len + 1);
247 process(event, &synth_sample, session);
248 }
249
250 free(event);
251 return 0;
252 }
253
254 static int __event__synthesize_thread(event_t *comm_event, event_t *mmap_event,
255 pid_t pid, event__handler_t process,
256 struct perf_session *session)
257 {
258 pid_t tgid = event__synthesize_comm(comm_event, pid, 1, process,
259 session);
260 if (tgid == -1)
261 return -1;
262 return event__synthesize_mmap_events(mmap_event, pid, tgid,
263 process, session);
264 }
265
266 int event__synthesize_thread_map(struct thread_map *threads,
267 event__handler_t process,
268 struct perf_session *session)
269 {
270 event_t *comm_event, *mmap_event;
271 int err = -1, thread;
272
273 comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size);
274 if (comm_event == NULL)
275 goto out;
276
277 mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size);
278 if (mmap_event == NULL)
279 goto out_free_comm;
280
281 err = 0;
282 for (thread = 0; thread < threads->nr; ++thread) {
283 if (__event__synthesize_thread(comm_event, mmap_event,
284 threads->map[thread],
285 process, session)) {
286 err = -1;
287 break;
288 }
289 }
290 free(mmap_event);
291 out_free_comm:
292 free(comm_event);
293 out:
294 return err;
295 }
296
297 int event__synthesize_threads(event__handler_t process,
298 struct perf_session *session)
299 {
300 DIR *proc;
301 struct dirent dirent, *next;
302 event_t *comm_event, *mmap_event;
303 int err = -1;
304
305 comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size);
306 if (comm_event == NULL)
307 goto out;
308
309 mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size);
310 if (mmap_event == NULL)
311 goto out_free_comm;
312
313 proc = opendir("/proc");
314 if (proc == NULL)
315 goto out_free_mmap;
316
317 while (!readdir_r(proc, &dirent, &next) && next) {
318 char *end;
319 pid_t pid = strtol(dirent.d_name, &end, 10);
320
321 if (*end) /* only interested in proper numerical dirents */
322 continue;
323
324 __event__synthesize_thread(comm_event, mmap_event, pid,
325 process, session);
326 }
327
328 closedir(proc);
329 err = 0;
330 out_free_mmap:
331 free(mmap_event);
332 out_free_comm:
333 free(comm_event);
334 out:
335 return err;
336 }
337
338 struct process_symbol_args {
339 const char *name;
340 u64 start;
341 };
342
343 static int find_symbol_cb(void *arg, const char *name, char type,
344 u64 start, u64 end __used)
345 {
346 struct process_symbol_args *args = arg;
347
348 /*
349 * Must be a function or at least an alias, as in PARISC64, where "_text" is
350 * an 'A' to the same address as "_stext".
351 */
352 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
353 type == 'A') || strcmp(name, args->name))
354 return 0;
355
356 args->start = start;
357 return 1;
358 }
359
360 int event__synthesize_kernel_mmap(event__handler_t process,
361 struct perf_session *session,
362 struct machine *machine,
363 const char *symbol_name)
364 {
365 size_t size;
366 const char *filename, *mmap_name;
367 char path[PATH_MAX];
368 char name_buff[PATH_MAX];
369 struct map *map;
370 int err;
371 /*
372 * We should get this from /sys/kernel/sections/.text, but till that is
373 * available use this, and after it is use this as a fallback for older
374 * kernels.
375 */
376 struct process_symbol_args args = { .name = symbol_name, };
377 event_t *event = zalloc(sizeof(event->mmap) + session->id_hdr_size);
378
379 if (event == NULL) {
380 pr_debug("Not enough memory synthesizing mmap event "
381 "for kernel modules\n");
382 return -1;
383 }
384
385 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
386 if (machine__is_host(machine)) {
387 /*
388 * kernel uses PERF_RECORD_MISC_USER for user space maps,
389 * see kernel/perf_event.c __perf_event_mmap
390 */
391 event->header.misc = PERF_RECORD_MISC_KERNEL;
392 filename = "/proc/kallsyms";
393 } else {
394 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
395 if (machine__is_default_guest(machine))
396 filename = (char *) symbol_conf.default_guest_kallsyms;
397 else {
398 sprintf(path, "%s/proc/kallsyms", machine->root_dir);
399 filename = path;
400 }
401 }
402
403 if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0)
404 return -ENOENT;
405
406 map = machine->vmlinux_maps[MAP__FUNCTION];
407 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
408 "%s%s", mmap_name, symbol_name) + 1;
409 size = ALIGN(size, sizeof(u64));
410 event->mmap.header.type = PERF_RECORD_MMAP;
411 event->mmap.header.size = (sizeof(event->mmap) -
412 (sizeof(event->mmap.filename) - size) + session->id_hdr_size);
413 event->mmap.pgoff = args.start;
414 event->mmap.start = map->start;
415 event->mmap.len = map->end - event->mmap.start;
416 event->mmap.pid = machine->pid;
417
418 err = process(event, &synth_sample, session);
419 free(event);
420
421 return err;
422 }
423
424 static void thread__comm_adjust(struct thread *self, struct hists *hists)
425 {
426 char *comm = self->comm;
427
428 if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
429 (!symbol_conf.comm_list ||
430 strlist__has_entry(symbol_conf.comm_list, comm))) {
431 u16 slen = strlen(comm);
432
433 if (hists__new_col_len(hists, HISTC_COMM, slen))
434 hists__set_col_len(hists, HISTC_THREAD, slen + 6);
435 }
436 }
437
438 static int thread__set_comm_adjust(struct thread *self, const char *comm,
439 struct hists *hists)
440 {
441 int ret = thread__set_comm(self, comm);
442
443 if (ret)
444 return ret;
445
446 thread__comm_adjust(self, hists);
447
448 return 0;
449 }
450
451 int event__process_comm(event_t *self, struct sample_data *sample __used,
452 struct perf_session *session)
453 {
454 struct thread *thread = perf_session__findnew(session, self->comm.tid);
455
456 dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid);
457
458 if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm,
459 &session->hists)) {
460 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
461 return -1;
462 }
463
464 return 0;
465 }
466
467 int event__process_lost(event_t *self, struct sample_data *sample __used,
468 struct perf_session *session)
469 {
470 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
471 self->lost.id, self->lost.lost);
472 session->hists.stats.total_lost += self->lost.lost;
473 return 0;
474 }
475
476 static void event_set_kernel_mmap_len(struct map **maps, event_t *self)
477 {
478 maps[MAP__FUNCTION]->start = self->mmap.start;
479 maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len;
480 /*
481 * Be a bit paranoid here, some perf.data file came with
482 * a zero sized synthesized MMAP event for the kernel.
483 */
484 if (maps[MAP__FUNCTION]->end == 0)
485 maps[MAP__FUNCTION]->end = ~0ULL;
486 }
487
488 static int event__process_kernel_mmap(event_t *self,
489 struct perf_session *session)
490 {
491 struct map *map;
492 char kmmap_prefix[PATH_MAX];
493 struct machine *machine;
494 enum dso_kernel_type kernel_type;
495 bool is_kernel_mmap;
496
497 machine = perf_session__findnew_machine(session, self->mmap.pid);
498 if (!machine) {
499 pr_err("Can't find id %d's machine\n", self->mmap.pid);
500 goto out_problem;
501 }
502
503 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
504 if (machine__is_host(machine))
505 kernel_type = DSO_TYPE_KERNEL;
506 else
507 kernel_type = DSO_TYPE_GUEST_KERNEL;
508
509 is_kernel_mmap = memcmp(self->mmap.filename,
510 kmmap_prefix,
511 strlen(kmmap_prefix)) == 0;
512 if (self->mmap.filename[0] == '/' ||
513 (!is_kernel_mmap && self->mmap.filename[0] == '[')) {
514
515 char short_module_name[1024];
516 char *name, *dot;
517
518 if (self->mmap.filename[0] == '/') {
519 name = strrchr(self->mmap.filename, '/');
520 if (name == NULL)
521 goto out_problem;
522
523 ++name; /* skip / */
524 dot = strrchr(name, '.');
525 if (dot == NULL)
526 goto out_problem;
527 snprintf(short_module_name, sizeof(short_module_name),
528 "[%.*s]", (int)(dot - name), name);
529 strxfrchar(short_module_name, '-', '_');
530 } else
531 strcpy(short_module_name, self->mmap.filename);
532
533 map = machine__new_module(machine, self->mmap.start,
534 self->mmap.filename);
535 if (map == NULL)
536 goto out_problem;
537
538 name = strdup(short_module_name);
539 if (name == NULL)
540 goto out_problem;
541
542 map->dso->short_name = name;
543 map->dso->sname_alloc = 1;
544 map->end = map->start + self->mmap.len;
545 } else if (is_kernel_mmap) {
546 const char *symbol_name = (self->mmap.filename +
547 strlen(kmmap_prefix));
548 /*
549 * Should be there already, from the build-id table in
550 * the header.
551 */
552 struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
553 kmmap_prefix);
554 if (kernel == NULL)
555 goto out_problem;
556
557 kernel->kernel = kernel_type;
558 if (__machine__create_kernel_maps(machine, kernel) < 0)
559 goto out_problem;
560
561 event_set_kernel_mmap_len(machine->vmlinux_maps, self);
562 perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
563 symbol_name,
564 self->mmap.pgoff);
565 if (machine__is_default_guest(machine)) {
566 /*
567 * preload dso of guest kernel and modules
568 */
569 dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
570 NULL);
571 }
572 }
573 return 0;
574 out_problem:
575 return -1;
576 }
577
578 int event__process_mmap(event_t *self, struct sample_data *sample __used,
579 struct perf_session *session)
580 {
581 struct machine *machine;
582 struct thread *thread;
583 struct map *map;
584 u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
585 int ret = 0;
586
587 dump_printf(" %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n",
588 self->mmap.pid, self->mmap.tid, self->mmap.start,
589 self->mmap.len, self->mmap.pgoff, self->mmap.filename);
590
591 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
592 cpumode == PERF_RECORD_MISC_KERNEL) {
593 ret = event__process_kernel_mmap(self, session);
594 if (ret < 0)
595 goto out_problem;
596 return 0;
597 }
598
599 machine = perf_session__find_host_machine(session);
600 if (machine == NULL)
601 goto out_problem;
602 thread = perf_session__findnew(session, self->mmap.pid);
603 if (thread == NULL)
604 goto out_problem;
605 map = map__new(&machine->user_dsos, self->mmap.start,
606 self->mmap.len, self->mmap.pgoff,
607 self->mmap.pid, self->mmap.filename,
608 MAP__FUNCTION);
609 if (map == NULL)
610 goto out_problem;
611
612 thread__insert_map(thread, map);
613 return 0;
614
615 out_problem:
616 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
617 return 0;
618 }
619
620 int event__process_task(event_t *self, struct sample_data *sample __used,
621 struct perf_session *session)
622 {
623 struct thread *thread = perf_session__findnew(session, self->fork.tid);
624 struct thread *parent = perf_session__findnew(session, self->fork.ptid);
625
626 dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid,
627 self->fork.ppid, self->fork.ptid);
628
629 if (self->header.type == PERF_RECORD_EXIT) {
630 perf_session__remove_thread(session, thread);
631 return 0;
632 }
633
634 if (thread == NULL || parent == NULL ||
635 thread__fork(thread, parent) < 0) {
636 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
637 return -1;
638 }
639
640 return 0;
641 }
642
643 int event__process(event_t *event, struct sample_data *sample,
644 struct perf_session *session)
645 {
646 switch (event->header.type) {
647 case PERF_RECORD_COMM:
648 event__process_comm(event, sample, session);
649 break;
650 case PERF_RECORD_MMAP:
651 event__process_mmap(event, sample, session);
652 break;
653 case PERF_RECORD_FORK:
654 case PERF_RECORD_EXIT:
655 event__process_task(event, sample, session);
656 break;
657 default:
658 break;
659 }
660
661 return 0;
662 }
663
664 void thread__find_addr_map(struct thread *self,
665 struct perf_session *session, u8 cpumode,
666 enum map_type type, pid_t pid, u64 addr,
667 struct addr_location *al)
668 {
669 struct map_groups *mg = &self->mg;
670 struct machine *machine = NULL;
671
672 al->thread = self;
673 al->addr = addr;
674 al->cpumode = cpumode;
675 al->filtered = false;
676
677 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
678 al->level = 'k';
679 machine = perf_session__find_host_machine(session);
680 if (machine == NULL) {
681 al->map = NULL;
682 return;
683 }
684 mg = &machine->kmaps;
685 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
686 al->level = '.';
687 machine = perf_session__find_host_machine(session);
688 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
689 al->level = 'g';
690 machine = perf_session__find_machine(session, pid);
691 if (machine == NULL) {
692 al->map = NULL;
693 return;
694 }
695 mg = &machine->kmaps;
696 } else {
697 /*
698 * 'u' means guest os user space.
699 * TODO: We don't support guest user space. Might support late.
700 */
701 if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
702 al->level = 'u';
703 else
704 al->level = 'H';
705 al->map = NULL;
706
707 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
708 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
709 !perf_guest)
710 al->filtered = true;
711 if ((cpumode == PERF_RECORD_MISC_USER ||
712 cpumode == PERF_RECORD_MISC_KERNEL) &&
713 !perf_host)
714 al->filtered = true;
715
716 return;
717 }
718 try_again:
719 al->map = map_groups__find(mg, type, al->addr);
720 if (al->map == NULL) {
721 /*
722 * If this is outside of all known maps, and is a negative
723 * address, try to look it up in the kernel dso, as it might be
724 * a vsyscall or vdso (which executes in user-mode).
725 *
726 * XXX This is nasty, we should have a symbol list in the
727 * "[vdso]" dso, but for now lets use the old trick of looking
728 * in the whole kernel symbol list.
729 */
730 if ((long long)al->addr < 0 &&
731 cpumode == PERF_RECORD_MISC_KERNEL &&
732 machine && mg != &machine->kmaps) {
733 mg = &machine->kmaps;
734 goto try_again;
735 }
736 } else
737 al->addr = al->map->map_ip(al->map, al->addr);
738 }
739
740 void thread__find_addr_location(struct thread *self,
741 struct perf_session *session, u8 cpumode,
742 enum map_type type, pid_t pid, u64 addr,
743 struct addr_location *al,
744 symbol_filter_t filter)
745 {
746 thread__find_addr_map(self, session, cpumode, type, pid, addr, al);
747 if (al->map != NULL)
748 al->sym = map__find_symbol(al->map, al->addr, filter);
749 else
750 al->sym = NULL;
751 }
752
753 static void dso__calc_col_width(struct dso *self, struct hists *hists)
754 {
755 if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
756 (!symbol_conf.dso_list ||
757 strlist__has_entry(symbol_conf.dso_list, self->name))) {
758 u16 slen = dso__name_len(self);
759 hists__new_col_len(hists, HISTC_DSO, slen);
760 }
761
762 self->slen_calculated = 1;
763 }
764
765 int event__preprocess_sample(const event_t *self, struct perf_session *session,
766 struct addr_location *al, struct sample_data *data,
767 symbol_filter_t filter)
768 {
769 u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
770 struct thread *thread = perf_session__findnew(session, self->ip.pid);
771
772 if (thread == NULL)
773 return -1;
774
775 if (symbol_conf.comm_list &&
776 !strlist__has_entry(symbol_conf.comm_list, thread->comm))
777 goto out_filtered;
778
779 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
780 /*
781 * Have we already created the kernel maps for the host machine?
782 *
783 * This should have happened earlier, when we processed the kernel MMAP
784 * events, but for older perf.data files there was no such thing, so do
785 * it now.
786 */
787 if (cpumode == PERF_RECORD_MISC_KERNEL &&
788 session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL)
789 machine__create_kernel_maps(&session->host_machine);
790
791 thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
792 self->ip.pid, self->ip.ip, al);
793 dump_printf(" ...... dso: %s\n",
794 al->map ? al->map->dso->long_name :
795 al->level == 'H' ? "[hypervisor]" : "<not found>");
796 al->sym = NULL;
797 al->cpu = data->cpu;
798
799 if (al->map) {
800 if (symbol_conf.dso_list &&
801 (!al->map || !al->map->dso ||
802 !(strlist__has_entry(symbol_conf.dso_list,
803 al->map->dso->short_name) ||
804 (al->map->dso->short_name != al->map->dso->long_name &&
805 strlist__has_entry(symbol_conf.dso_list,
806 al->map->dso->long_name)))))
807 goto out_filtered;
808 /*
809 * We have to do this here as we may have a dso with no symbol
810 * hit that has a name longer than the ones with symbols
811 * sampled.
812 */
813 if (!sort_dso.elide && !al->map->dso->slen_calculated)
814 dso__calc_col_width(al->map->dso, &session->hists);
815
816 al->sym = map__find_symbol(al->map, al->addr, filter);
817 } else {
818 const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
819
820 if (hists__col_len(&session->hists, HISTC_DSO) < unresolved_col_width &&
821 !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
822 !symbol_conf.dso_list)
823 hists__set_col_len(&session->hists, HISTC_DSO,
824 unresolved_col_width);
825 }
826
827 if (symbol_conf.sym_list && al->sym &&
828 !strlist__has_entry(symbol_conf.sym_list, al->sym->name))
829 goto out_filtered;
830
831 return 0;
832
833 out_filtered:
834 al->filtered = true;
835 return 0;
836 }
837
838 static int event__parse_id_sample(const event_t *event,
839 struct perf_session *session,
840 struct sample_data *sample)
841 {
842 const u64 *array;
843 u64 type;
844
845 sample->cpu = sample->pid = sample->tid = -1;
846 sample->stream_id = sample->id = sample->time = -1ULL;
847
848 if (!session->sample_id_all)
849 return 0;
850
851 array = event->sample.array;
852 array += ((event->header.size -
853 sizeof(event->header)) / sizeof(u64)) - 1;
854 type = session->sample_type;
855
856 if (type & PERF_SAMPLE_CPU) {
857 u32 *p = (u32 *)array;
858 sample->cpu = *p;
859 array--;
860 }
861
862 if (type & PERF_SAMPLE_STREAM_ID) {
863 sample->stream_id = *array;
864 array--;
865 }
866
867 if (type & PERF_SAMPLE_ID) {
868 sample->id = *array;
869 array--;
870 }
871
872 if (type & PERF_SAMPLE_TIME) {
873 sample->time = *array;
874 array--;
875 }
876
877 if (type & PERF_SAMPLE_TID) {
878 u32 *p = (u32 *)array;
879 sample->pid = p[0];
880 sample->tid = p[1];
881 }
882
883 return 0;
884 }
885
886 int event__parse_sample(const event_t *event, struct perf_session *session,
887 struct sample_data *data)
888 {
889 const u64 *array;
890 u64 type;
891
892 if (event->header.type != PERF_RECORD_SAMPLE)
893 return event__parse_id_sample(event, session, data);
894
895 array = event->sample.array;
896 type = session->sample_type;
897
898 if (type & PERF_SAMPLE_IP) {
899 data->ip = event->ip.ip;
900 array++;
901 }
902
903 if (type & PERF_SAMPLE_TID) {
904 u32 *p = (u32 *)array;
905 data->pid = p[0];
906 data->tid = p[1];
907 array++;
908 }
909
910 if (type & PERF_SAMPLE_TIME) {
911 data->time = *array;
912 array++;
913 }
914
915 if (type & PERF_SAMPLE_ADDR) {
916 data->addr = *array;
917 array++;
918 }
919
920 data->id = -1ULL;
921 if (type & PERF_SAMPLE_ID) {
922 data->id = *array;
923 array++;
924 }
925
926 if (type & PERF_SAMPLE_STREAM_ID) {
927 data->stream_id = *array;
928 array++;
929 }
930
931 if (type & PERF_SAMPLE_CPU) {
932 u32 *p = (u32 *)array;
933 data->cpu = *p;
934 array++;
935 } else
936 data->cpu = -1;
937
938 if (type & PERF_SAMPLE_PERIOD) {
939 data->period = *array;
940 array++;
941 }
942
943 if (type & PERF_SAMPLE_READ) {
944 pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
945 return -1;
946 }
947
948 if (type & PERF_SAMPLE_CALLCHAIN) {
949 data->callchain = (struct ip_callchain *)array;
950 array += 1 + data->callchain->nr;
951 }
952
953 if (type & PERF_SAMPLE_RAW) {
954 u32 *p = (u32 *)array;
955 data->raw_size = *p;
956 p++;
957 data->raw_data = p;
958 }
959
960 return 0;
961 }
kernel source for telekom puls (alcatel/mediatek)