Commit | Line | Data |
---|---|---|
53cb8bc2 IM |
1 | #include "util/util.h" |
2 | ||
3 | #include <libelf.h> | |
62eb9390 ACM |
4 | #include <gelf.h> |
5 | #include <elf.h> | |
53cb8bc2 | 6 | |
35a50c8a ACM |
7 | #include "util/list.h" |
8 | #include "util/rbtree.h" | |
8fa66bdc | 9 | |
53cb8bc2 IM |
10 | #include "perf.h" |
11 | ||
12 | #include "util/parse-options.h" | |
13 | #include "util/parse-events.h" | |
14 | ||
8fa66bdc ACM |
15 | #define SHOW_KERNEL 1 |
16 | #define SHOW_USER 2 | |
17 | #define SHOW_HV 4 | |
18 | ||
53cb8bc2 | 19 | static char const *input_name = "output.perf"; |
8fa66bdc ACM |
20 | static int input; |
21 | static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV; | |
22 | ||
23 | static unsigned long page_size; | |
24 | static unsigned long mmap_window = 32; | |
25 | ||
53cb8bc2 | 26 | const char *perf_event_names[] = { |
8fa66bdc ACM |
27 | [PERF_EVENT_MMAP] = " PERF_EVENT_MMAP", |
28 | [PERF_EVENT_MUNMAP] = " PERF_EVENT_MUNMAP", | |
29 | [PERF_EVENT_COMM] = " PERF_EVENT_COMM", | |
30 | }; | |
31 | ||
32 | struct ip_event { | |
33 | struct perf_event_header header; | |
34 | __u64 ip; | |
35 | __u32 pid, tid; | |
36 | }; | |
37 | struct mmap_event { | |
38 | struct perf_event_header header; | |
39 | __u32 pid, tid; | |
40 | __u64 start; | |
41 | __u64 len; | |
42 | __u64 pgoff; | |
43 | char filename[PATH_MAX]; | |
44 | }; | |
45 | struct comm_event { | |
46 | struct perf_event_header header; | |
47 | __u32 pid,tid; | |
48 | char comm[16]; | |
49 | }; | |
50 | ||
51 | typedef union event_union { | |
52 | struct perf_event_header header; | |
53 | struct ip_event ip; | |
54 | struct mmap_event mmap; | |
55 | struct comm_event comm; | |
56 | } event_t; | |
57 | ||
8fa66bdc | 58 | struct symbol { |
35a50c8a ACM |
59 | struct rb_node rb_node; |
60 | uint64_t start; | |
61 | uint64_t end; | |
62 | char name[0]; | |
8fa66bdc ACM |
63 | }; |
64 | ||
65 | static struct symbol *symbol__new(uint64_t start, uint64_t len, const char *name) | |
66 | { | |
67 | struct symbol *self = malloc(sizeof(*self) + strlen(name) + 1); | |
68 | ||
69 | if (self != NULL) { | |
70 | self->start = start; | |
71 | self->end = start + len; | |
72 | strcpy(self->name, name); | |
73 | } | |
74 | ||
75 | return self; | |
76 | } | |
77 | ||
78 | static void symbol__delete(struct symbol *self) | |
79 | { | |
80 | free(self); | |
81 | } | |
82 | ||
83 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) | |
84 | { | |
85 | return fprintf(fp, " %lx-%lx %s\n", | |
86 | self->start, self->end, self->name); | |
87 | } | |
88 | ||
89 | struct dso { | |
90 | struct list_head node; | |
35a50c8a | 91 | struct rb_root syms; |
8fa66bdc ACM |
92 | char name[0]; |
93 | }; | |
94 | ||
95 | static struct dso *dso__new(const char *name) | |
96 | { | |
97 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); | |
98 | ||
99 | if (self != NULL) { | |
100 | strcpy(self->name, name); | |
35a50c8a | 101 | self->syms = RB_ROOT; |
8fa66bdc ACM |
102 | } |
103 | ||
104 | return self; | |
105 | } | |
106 | ||
8fa66bdc ACM |
107 | static void dso__delete_symbols(struct dso *self) |
108 | { | |
35a50c8a ACM |
109 | struct symbol *pos; |
110 | struct rb_node *next = rb_first(&self->syms); | |
8fa66bdc | 111 | |
35a50c8a ACM |
112 | while (next) { |
113 | pos = rb_entry(next, struct symbol, rb_node); | |
114 | next = rb_next(&pos->rb_node); | |
8fa66bdc | 115 | symbol__delete(pos); |
35a50c8a | 116 | } |
8fa66bdc ACM |
117 | } |
118 | ||
119 | static void dso__delete(struct dso *self) | |
120 | { | |
8fa66bdc ACM |
121 | dso__delete_symbols(self); |
122 | free(self); | |
123 | } | |
124 | ||
125 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) | |
126 | { | |
35a50c8a ACM |
127 | struct rb_node **p = &self->syms.rb_node; |
128 | struct rb_node *parent = NULL; | |
129 | const uint64_t ip = sym->start; | |
130 | struct symbol *s; | |
131 | ||
132 | while (*p != NULL) { | |
133 | parent = *p; | |
134 | s = rb_entry(parent, struct symbol, rb_node); | |
135 | if (ip < s->start) | |
136 | p = &(*p)->rb_left; | |
137 | else | |
138 | p = &(*p)->rb_right; | |
139 | } | |
140 | rb_link_node(&sym->rb_node, parent, p); | |
141 | rb_insert_color(&sym->rb_node, &self->syms); | |
8fa66bdc ACM |
142 | } |
143 | ||
144 | static struct symbol *dso__find_symbol(struct dso *self, uint64_t ip) | |
145 | { | |
146 | if (self == NULL) | |
147 | return NULL; | |
148 | ||
35a50c8a | 149 | struct rb_node *n = self->syms.rb_node; |
8fa66bdc | 150 | |
35a50c8a ACM |
151 | while (n) { |
152 | struct symbol *s = rb_entry(n, struct symbol, rb_node); | |
153 | ||
154 | if (ip < s->start) | |
155 | n = n->rb_left; | |
156 | else if (ip > s->end) | |
157 | n = n->rb_right; | |
158 | else | |
159 | return s; | |
160 | } | |
8fa66bdc ACM |
161 | |
162 | return NULL; | |
163 | } | |
164 | ||
62eb9390 ACM |
165 | /** |
166 | * elf_symtab__for_each_symbol - iterate thru all the symbols | |
167 | * | |
168 | * @self: struct elf_symtab instance to iterate | |
169 | * @index: uint32_t index | |
170 | * @sym: GElf_Sym iterator | |
171 | */ | |
172 | #define elf_symtab__for_each_symbol(syms, nr_syms, index, sym) \ | |
173 | for (index = 0, gelf_getsym(syms, index, &sym);\ | |
174 | index < nr_syms; \ | |
175 | index++, gelf_getsym(syms, index, &sym)) | |
176 | ||
177 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) | |
178 | { | |
179 | return GELF_ST_TYPE(sym->st_info); | |
180 | } | |
181 | ||
53cb8bc2 | 182 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
62eb9390 ACM |
183 | { |
184 | return elf_sym__type(sym) == STT_FUNC && | |
185 | sym->st_name != 0 && | |
186 | sym->st_shndx != SHN_UNDEF; | |
187 | } | |
188 | ||
189 | static inline const char *elf_sym__name(const GElf_Sym *sym, | |
190 | const Elf_Data *symstrs) | |
191 | { | |
192 | return symstrs->d_buf + sym->st_name; | |
193 | } | |
194 | ||
195 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, | |
196 | GElf_Shdr *shp, const char *name, | |
197 | size_t *index) | |
198 | { | |
199 | Elf_Scn *sec = NULL; | |
200 | size_t cnt = 1; | |
201 | ||
202 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
203 | char *str; | |
204 | ||
205 | gelf_getshdr(sec, shp); | |
206 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); | |
207 | if (!strcmp(name, str)) { | |
208 | if (index) | |
209 | *index = cnt; | |
210 | break; | |
211 | } | |
212 | ++cnt; | |
213 | } | |
214 | ||
215 | return sec; | |
216 | } | |
217 | ||
8fa66bdc ACM |
218 | static int dso__load(struct dso *self) |
219 | { | |
62eb9390 ACM |
220 | int fd = open(self->name, O_RDONLY), err = -1; |
221 | ||
222 | if (fd == -1) | |
223 | return -1; | |
224 | ||
225 | Elf *elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); | |
226 | if (elf == NULL) { | |
227 | fprintf(stderr, "%s: cannot read %s ELF file.\n", | |
228 | __func__, self->name); | |
229 | goto out_close; | |
230 | } | |
231 | ||
232 | GElf_Ehdr ehdr; | |
233 | if (gelf_getehdr(elf, &ehdr) == NULL) { | |
234 | fprintf(stderr, "%s: cannot get elf header.\n", __func__); | |
235 | goto out_elf_end; | |
236 | } | |
237 | ||
238 | GElf_Shdr shdr; | |
239 | Elf_Scn *sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); | |
240 | if (sec == NULL) | |
241 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); | |
242 | ||
243 | if (sec == NULL) | |
244 | goto out_elf_end; | |
245 | ||
62eb9390 ACM |
246 | Elf_Data *syms = elf_getdata(sec, NULL); |
247 | if (syms == NULL) | |
248 | goto out_elf_end; | |
249 | ||
250 | sec = elf_getscn(elf, shdr.sh_link); | |
251 | if (sec == NULL) | |
252 | goto out_elf_end; | |
253 | ||
254 | Elf_Data *symstrs = elf_getdata(sec, NULL); | |
255 | if (symstrs == NULL) | |
256 | goto out_elf_end; | |
257 | ||
258 | const uint32_t nr_syms = shdr.sh_size / shdr.sh_entsize; | |
259 | ||
260 | GElf_Sym sym; | |
261 | uint32_t index; | |
262 | elf_symtab__for_each_symbol(syms, nr_syms, index, sym) { | |
f17e04af PZ |
263 | struct symbol *f; |
264 | ||
62eb9390 ACM |
265 | if (!elf_sym__is_function(&sym)) |
266 | continue; | |
f17e04af PZ |
267 | |
268 | sec = elf_getscn(elf, sym.st_shndx); | |
269 | if (!sec) | |
270 | goto out_elf_end; | |
271 | ||
272 | gelf_getshdr(sec, &shdr); | |
273 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; | |
274 | ||
275 | f = symbol__new(sym.st_value, sym.st_size, | |
276 | elf_sym__name(&sym, symstrs)); | |
277 | if (!f) | |
62eb9390 ACM |
278 | goto out_elf_end; |
279 | ||
280 | dso__insert_symbol(self, f); | |
281 | } | |
282 | ||
283 | err = 0; | |
284 | out_elf_end: | |
285 | elf_end(elf); | |
286 | out_close: | |
287 | close(fd); | |
288 | return err; | |
8fa66bdc ACM |
289 | } |
290 | ||
291 | static size_t dso__fprintf(struct dso *self, FILE *fp) | |
292 | { | |
8fa66bdc ACM |
293 | size_t ret = fprintf(fp, "dso: %s\n", self->name); |
294 | ||
35a50c8a ACM |
295 | struct rb_node *nd; |
296 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { | |
297 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
8fa66bdc | 298 | ret += symbol__fprintf(pos, fp); |
35a50c8a | 299 | } |
8fa66bdc ACM |
300 | |
301 | return ret; | |
302 | } | |
303 | ||
304 | static LIST_HEAD(dsos); | |
305 | static struct dso *kernel_dso; | |
306 | ||
307 | static void dsos__add(struct dso *dso) | |
308 | { | |
309 | list_add_tail(&dso->node, &dsos); | |
310 | } | |
311 | ||
312 | static struct dso *dsos__find(const char *name) | |
313 | { | |
314 | struct dso *pos; | |
315 | ||
316 | list_for_each_entry(pos, &dsos, node) | |
317 | if (strcmp(pos->name, name) == 0) | |
318 | return pos; | |
319 | return NULL; | |
320 | } | |
321 | ||
322 | static struct dso *dsos__findnew(const char *name) | |
323 | { | |
324 | struct dso *dso = dsos__find(name); | |
325 | ||
326 | if (dso == NULL) { | |
327 | dso = dso__new(name); | |
328 | if (dso != NULL && dso__load(dso) < 0) | |
329 | goto out_delete_dso; | |
330 | ||
331 | dsos__add(dso); | |
332 | } | |
333 | ||
334 | return dso; | |
335 | ||
336 | out_delete_dso: | |
337 | dso__delete(dso); | |
338 | return NULL; | |
339 | } | |
340 | ||
53cb8bc2 | 341 | void dsos__fprintf(FILE *fp) |
8fa66bdc ACM |
342 | { |
343 | struct dso *pos; | |
344 | ||
345 | list_for_each_entry(pos, &dsos, node) | |
346 | dso__fprintf(pos, fp); | |
347 | } | |
348 | ||
349 | static int load_kallsyms(void) | |
350 | { | |
351 | kernel_dso = dso__new("[kernel]"); | |
352 | if (kernel_dso == NULL) | |
353 | return -1; | |
354 | ||
355 | FILE *file = fopen("/proc/kallsyms", "r"); | |
356 | ||
357 | if (file == NULL) | |
358 | goto out_delete_dso; | |
359 | ||
360 | char *line = NULL; | |
361 | size_t n; | |
362 | ||
363 | while (!feof(file)) { | |
364 | unsigned long long start; | |
365 | char c, symbf[4096]; | |
366 | ||
367 | if (getline(&line, &n, file) < 0) | |
368 | break; | |
369 | ||
370 | if (!line) | |
371 | goto out_delete_dso; | |
372 | ||
373 | if (sscanf(line, "%llx %c %s", &start, &c, symbf) == 3) { | |
374 | struct symbol *sym = symbol__new(start, 0x1000000, symbf); | |
375 | ||
376 | if (sym == NULL) | |
377 | goto out_delete_dso; | |
378 | ||
379 | dso__insert_symbol(kernel_dso, sym); | |
380 | } | |
381 | } | |
382 | ||
383 | dsos__add(kernel_dso); | |
384 | free(line); | |
385 | fclose(file); | |
386 | return 0; | |
387 | ||
388 | out_delete_dso: | |
389 | dso__delete(kernel_dso); | |
390 | return -1; | |
391 | } | |
392 | ||
393 | struct map { | |
394 | struct list_head node; | |
395 | uint64_t start; | |
396 | uint64_t end; | |
397 | uint64_t pgoff; | |
398 | struct dso *dso; | |
399 | }; | |
400 | ||
401 | static struct map *map__new(struct mmap_event *event) | |
402 | { | |
403 | struct map *self = malloc(sizeof(*self)); | |
404 | ||
405 | if (self != NULL) { | |
406 | self->start = event->start; | |
407 | self->end = event->start + event->len; | |
408 | self->pgoff = event->pgoff; | |
409 | ||
410 | self->dso = dsos__findnew(event->filename); | |
411 | if (self->dso == NULL) | |
412 | goto out_delete; | |
413 | } | |
414 | return self; | |
415 | out_delete: | |
416 | free(self); | |
417 | return NULL; | |
418 | } | |
419 | ||
420 | static size_t map__fprintf(struct map *self, FILE *fp) | |
421 | { | |
422 | return fprintf(fp, " %lx-%lx %lx %s\n", | |
423 | self->start, self->end, self->pgoff, self->dso->name); | |
424 | } | |
425 | ||
426 | struct symhist { | |
ce7e4365 | 427 | struct rb_node rb_node; |
8fa66bdc ACM |
428 | struct dso *dso; |
429 | struct symbol *sym; | |
ce7e4365 | 430 | uint64_t ip; |
8fa66bdc ACM |
431 | uint32_t count; |
432 | char level; | |
433 | }; | |
434 | ||
ce7e4365 ACM |
435 | static struct symhist *symhist__new(struct symbol *sym, uint64_t ip, |
436 | struct dso *dso, char level) | |
8fa66bdc ACM |
437 | { |
438 | struct symhist *self = malloc(sizeof(*self)); | |
439 | ||
440 | if (self != NULL) { | |
441 | self->sym = sym; | |
ce7e4365 | 442 | self->ip = ip; |
8fa66bdc ACM |
443 | self->dso = dso; |
444 | self->level = level; | |
ce7e4365 | 445 | self->count = 1; |
8fa66bdc ACM |
446 | } |
447 | ||
448 | return self; | |
449 | } | |
450 | ||
53cb8bc2 | 451 | void symhist__delete(struct symhist *self) |
8fa66bdc ACM |
452 | { |
453 | free(self); | |
454 | } | |
455 | ||
8fa66bdc ACM |
456 | static void symhist__inc(struct symhist *self) |
457 | { | |
458 | ++self->count; | |
459 | } | |
460 | ||
461 | static size_t symhist__fprintf(struct symhist *self, FILE *fp) | |
462 | { | |
ce7e4365 | 463 | size_t ret = fprintf(fp, "%#llx [%c] ", (unsigned long long)self->ip, self->level); |
8fa66bdc ACM |
464 | |
465 | if (self->level != '.') | |
f3e08c53 | 466 | ret += fprintf(fp, "%s", self->sym ? self->sym->name: "<unknown>"); |
8fa66bdc ACM |
467 | else |
468 | ret += fprintf(fp, "%s: %s", | |
f17e04af | 469 | self->dso ? self->dso->name : "<unknown>", |
8fa66bdc ACM |
470 | self->sym ? self->sym->name : "<unknown>"); |
471 | return ret + fprintf(fp, ": %u\n", self->count); | |
472 | } | |
473 | ||
474 | struct thread { | |
ce7e4365 | 475 | struct rb_node rb_node; |
8fa66bdc | 476 | struct list_head maps; |
ce7e4365 | 477 | struct rb_root symhists; |
8fa66bdc ACM |
478 | pid_t pid; |
479 | char *comm; | |
480 | }; | |
481 | ||
482 | static struct thread *thread__new(pid_t pid) | |
483 | { | |
484 | struct thread *self = malloc(sizeof(*self)); | |
485 | ||
486 | if (self != NULL) { | |
487 | self->pid = pid; | |
488 | self->comm = NULL; | |
489 | INIT_LIST_HEAD(&self->maps); | |
ce7e4365 | 490 | self->symhists = RB_ROOT; |
8fa66bdc ACM |
491 | } |
492 | ||
493 | return self; | |
494 | } | |
495 | ||
ce7e4365 ACM |
496 | static int thread__symbol_incnew(struct thread *self, struct symbol *sym, |
497 | uint64_t ip, struct dso *dso, char level) | |
8fa66bdc | 498 | { |
ce7e4365 ACM |
499 | struct rb_node **p = &self->symhists.rb_node; |
500 | struct rb_node *parent = NULL; | |
501 | struct symhist *sh; | |
8fa66bdc | 502 | |
ce7e4365 ACM |
503 | while (*p != NULL) { |
504 | parent = *p; | |
505 | sh = rb_entry(parent, struct symhist, rb_node); | |
8fa66bdc | 506 | |
ce7e4365 ACM |
507 | if (sh->sym == sym || ip == sh->ip) { |
508 | symhist__inc(sh); | |
509 | return 0; | |
510 | } | |
8fa66bdc | 511 | |
ce7e4365 ACM |
512 | /* Handle unresolved symbols too */ |
513 | const uint64_t start = !sh->sym ? sh->ip : sh->sym->start; | |
8fa66bdc | 514 | |
ce7e4365 ACM |
515 | if (ip < start) |
516 | p = &(*p)->rb_left; | |
517 | else | |
518 | p = &(*p)->rb_right; | |
8fa66bdc ACM |
519 | } |
520 | ||
ce7e4365 ACM |
521 | sh = symhist__new(sym, ip, dso, level); |
522 | if (sh == NULL) | |
523 | return -ENOMEM; | |
524 | rb_link_node(&sh->rb_node, parent, p); | |
525 | rb_insert_color(&sh->rb_node, &self->symhists); | |
8fa66bdc | 526 | return 0; |
8fa66bdc ACM |
527 | } |
528 | ||
529 | static int thread__set_comm(struct thread *self, const char *comm) | |
530 | { | |
531 | self->comm = strdup(comm); | |
532 | return self->comm ? 0 : -ENOMEM; | |
533 | } | |
534 | ||
53cb8bc2 | 535 | size_t thread__maps_fprintf(struct thread *self, FILE *fp) |
8fa66bdc ACM |
536 | { |
537 | struct map *pos; | |
538 | size_t ret = 0; | |
539 | ||
540 | list_for_each_entry(pos, &self->maps, node) | |
541 | ret += map__fprintf(pos, fp); | |
542 | ||
543 | return ret; | |
544 | } | |
545 | ||
546 | static size_t thread__fprintf(struct thread *self, FILE *fp) | |
547 | { | |
8fa66bdc | 548 | int ret = fprintf(fp, "thread: %d %s\n", self->pid, self->comm); |
ce7e4365 | 549 | struct rb_node *nd; |
8fa66bdc | 550 | |
ce7e4365 ACM |
551 | for (nd = rb_first(&self->symhists); nd; nd = rb_next(nd)) { |
552 | struct symhist *pos = rb_entry(nd, struct symhist, rb_node); | |
8fa66bdc | 553 | ret += symhist__fprintf(pos, fp); |
ce7e4365 | 554 | } |
8fa66bdc ACM |
555 | |
556 | return ret; | |
557 | } | |
558 | ||
ce7e4365 | 559 | static struct rb_root threads = RB_ROOT; |
8fa66bdc | 560 | |
ce7e4365 | 561 | static struct thread *threads__findnew(pid_t pid) |
8fa66bdc | 562 | { |
ce7e4365 ACM |
563 | struct rb_node **p = &threads.rb_node; |
564 | struct rb_node *parent = NULL; | |
565 | struct thread *th; | |
8fa66bdc | 566 | |
ce7e4365 ACM |
567 | while (*p != NULL) { |
568 | parent = *p; | |
569 | th = rb_entry(parent, struct thread, rb_node); | |
8fa66bdc | 570 | |
ce7e4365 ACM |
571 | if (th->pid == pid) |
572 | return th; | |
8fa66bdc | 573 | |
ce7e4365 ACM |
574 | if (pid < th->pid) |
575 | p = &(*p)->rb_left; | |
576 | else | |
577 | p = &(*p)->rb_right; | |
8fa66bdc ACM |
578 | } |
579 | ||
ce7e4365 ACM |
580 | th = thread__new(pid); |
581 | if (th != NULL) { | |
582 | rb_link_node(&th->rb_node, parent, p); | |
583 | rb_insert_color(&th->rb_node, &threads); | |
584 | } | |
585 | return th; | |
8fa66bdc ACM |
586 | } |
587 | ||
588 | static void thread__insert_map(struct thread *self, struct map *map) | |
589 | { | |
590 | list_add_tail(&map->node, &self->maps); | |
591 | } | |
592 | ||
593 | static struct map *thread__find_map(struct thread *self, uint64_t ip) | |
594 | { | |
595 | if (self == NULL) | |
596 | return NULL; | |
597 | ||
598 | struct map *pos; | |
599 | ||
600 | list_for_each_entry(pos, &self->maps, node) | |
601 | if (ip >= pos->start && ip <= pos->end) | |
602 | return pos; | |
603 | ||
604 | return NULL; | |
605 | } | |
606 | ||
607 | static void threads__fprintf(FILE *fp) | |
608 | { | |
ce7e4365 ACM |
609 | struct rb_node *nd; |
610 | for (nd = rb_first(&threads); nd; nd = rb_next(nd)) { | |
611 | struct thread *pos = rb_entry(nd, struct thread, rb_node); | |
8fa66bdc | 612 | thread__fprintf(pos, fp); |
ce7e4365 | 613 | } |
8fa66bdc ACM |
614 | } |
615 | ||
53cb8bc2 | 616 | static int __cmd_report(void) |
8fa66bdc ACM |
617 | { |
618 | unsigned long offset = 0; | |
619 | unsigned long head = 0; | |
620 | struct stat stat; | |
621 | char *buf; | |
622 | event_t *event; | |
623 | int ret, rc = EXIT_FAILURE; | |
624 | unsigned long total = 0; | |
625 | ||
8fa66bdc ACM |
626 | input = open(input_name, O_RDONLY); |
627 | if (input < 0) { | |
628 | perror("failed to open file"); | |
629 | exit(-1); | |
630 | } | |
631 | ||
632 | ret = fstat(input, &stat); | |
633 | if (ret < 0) { | |
634 | perror("failed to stat file"); | |
635 | exit(-1); | |
636 | } | |
637 | ||
638 | if (!stat.st_size) { | |
639 | fprintf(stderr, "zero-sized file, nothing to do!\n"); | |
640 | exit(0); | |
641 | } | |
642 | ||
643 | if (load_kallsyms() < 0) { | |
644 | perror("failed to open kallsyms"); | |
645 | return EXIT_FAILURE; | |
646 | } | |
647 | ||
648 | remap: | |
649 | buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, | |
650 | MAP_SHARED, input, offset); | |
651 | if (buf == MAP_FAILED) { | |
652 | perror("failed to mmap file"); | |
653 | exit(-1); | |
654 | } | |
655 | ||
656 | more: | |
657 | event = (event_t *)(buf + head); | |
658 | ||
659 | if (head + event->header.size >= page_size * mmap_window) { | |
660 | unsigned long shift = page_size * (head / page_size); | |
661 | int ret; | |
662 | ||
663 | ret = munmap(buf, page_size * mmap_window); | |
664 | assert(ret == 0); | |
665 | ||
666 | offset += shift; | |
667 | head -= shift; | |
668 | goto remap; | |
669 | } | |
670 | ||
671 | ||
672 | if (!event->header.size) { | |
673 | fprintf(stderr, "zero-sized event at file offset %ld\n", offset + head); | |
674 | fprintf(stderr, "skipping %ld bytes of events.\n", stat.st_size - offset - head); | |
675 | goto done; | |
676 | } | |
677 | ||
678 | head += event->header.size; | |
679 | ||
680 | if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) { | |
681 | char level; | |
682 | int show = 0; | |
683 | struct dso *dso = NULL; | |
684 | struct thread *thread = threads__findnew(event->ip.pid); | |
f17e04af | 685 | uint64_t ip = event->ip.ip; |
8fa66bdc | 686 | |
ce7e4365 ACM |
687 | if (thread == NULL) { |
688 | fprintf(stderr, "problem processing %d event, bailing out\n", | |
689 | event->header.type); | |
8fa66bdc | 690 | goto done; |
ce7e4365 | 691 | } |
8fa66bdc ACM |
692 | |
693 | if (event->header.misc & PERF_EVENT_MISC_KERNEL) { | |
694 | show = SHOW_KERNEL; | |
695 | level = 'k'; | |
696 | dso = kernel_dso; | |
697 | } else if (event->header.misc & PERF_EVENT_MISC_USER) { | |
698 | show = SHOW_USER; | |
699 | level = '.'; | |
f17e04af PZ |
700 | struct map *map = thread__find_map(thread, ip); |
701 | if (map != NULL) { | |
8fa66bdc | 702 | dso = map->dso; |
f17e04af PZ |
703 | ip -= map->start + map->pgoff; |
704 | } | |
8fa66bdc ACM |
705 | } else { |
706 | show = SHOW_HV; | |
707 | level = 'H'; | |
708 | } | |
709 | ||
710 | if (show & show_mask) { | |
f17e04af | 711 | struct symbol *sym = dso__find_symbol(dso, ip); |
8fa66bdc | 712 | |
f17e04af | 713 | if (thread__symbol_incnew(thread, sym, ip, dso, level)) { |
ce7e4365 | 714 | fprintf(stderr, "problem incrementing symbol count, bailing out\n"); |
8fa66bdc | 715 | goto done; |
ce7e4365 | 716 | } |
8fa66bdc ACM |
717 | } |
718 | total++; | |
719 | } else switch (event->header.type) { | |
720 | case PERF_EVENT_MMAP: { | |
721 | struct thread *thread = threads__findnew(event->mmap.pid); | |
722 | struct map *map = map__new(&event->mmap); | |
723 | ||
ce7e4365 ACM |
724 | if (thread == NULL || map == NULL) { |
725 | fprintf(stderr, "problem processing PERF_EVENT_MMAP, bailing out\n"); | |
8fa66bdc | 726 | goto done; |
ce7e4365 | 727 | } |
8fa66bdc ACM |
728 | thread__insert_map(thread, map); |
729 | break; | |
730 | } | |
731 | case PERF_EVENT_COMM: { | |
732 | struct thread *thread = threads__findnew(event->comm.pid); | |
733 | ||
734 | if (thread == NULL || | |
ce7e4365 ACM |
735 | thread__set_comm(thread, event->comm.comm)) { |
736 | fprintf(stderr, "problem processing PERF_EVENT_COMM, bailing out\n"); | |
8fa66bdc | 737 | goto done; |
ce7e4365 | 738 | } |
8fa66bdc ACM |
739 | break; |
740 | } | |
741 | } | |
742 | ||
743 | if (offset + head < stat.st_size) | |
744 | goto more; | |
745 | ||
746 | rc = EXIT_SUCCESS; | |
747 | done: | |
748 | close(input); | |
749 | //dsos__fprintf(stdout); | |
750 | threads__fprintf(stdout); | |
751 | #if 0 | |
752 | std::map<std::string, int>::iterator hi = hist.begin(); | |
753 | ||
754 | while (hi != hist.end()) { | |
755 | rev_hist.insert(std::pair<int, std::string>(hi->second, hi->first)); | |
756 | hist.erase(hi++); | |
757 | } | |
758 | ||
759 | std::multimap<int, std::string>::const_iterator ri = rev_hist.begin(); | |
760 | ||
761 | while (ri != rev_hist.end()) { | |
762 | printf(" %5.2f %s\n", (100.0 * ri->first)/total, ri->second.c_str()); | |
763 | ri++; | |
764 | } | |
765 | #endif | |
766 | return rc; | |
767 | } | |
768 | ||
53cb8bc2 IM |
769 | static const char * const report_usage[] = { |
770 | "perf report [<options>] <command>", | |
771 | NULL | |
772 | }; | |
773 | ||
774 | static const struct option options[] = { | |
775 | OPT_STRING('i', "input", &input_name, "file", | |
776 | "input file name"), | |
777 | OPT_END() | |
778 | }; | |
779 | ||
780 | int cmd_report(int argc, const char **argv, const char *prefix) | |
781 | { | |
782 | elf_version(EV_CURRENT); | |
783 | ||
784 | page_size = getpagesize(); | |
785 | ||
786 | parse_options(argc, argv, options, report_usage, 0); | |
787 | ||
788 | return __cmd_report(); | |
789 | } |