Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1 | #include "util/util.h" |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 2 | #include "builtin.h" |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 3 | |
| 4 | #include <libelf.h> |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 5 | #include <gelf.h> |
| 6 | #include <elf.h> |
Arnaldo Carvalho de Melo | 03f6316 | 2009-05-26 19:21:55 -0300 | [diff] [blame] | 7 | #include <ctype.h> |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 8 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 9 | #include "util/list.h" |
| 10 | #include "util/rbtree.h" |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 11 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 12 | #include "perf.h" |
| 13 | |
| 14 | #include "util/parse-options.h" |
| 15 | #include "util/parse-events.h" |
| 16 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 17 | #define SHOW_KERNEL 1 |
| 18 | #define SHOW_USER 2 |
| 19 | #define SHOW_HV 4 |
| 20 | |
Ingo Molnar | 23ac9cb | 2009-05-27 09:33:18 +0200 | [diff] [blame^] | 21 | static char const *input_name = "perf.data"; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 22 | static int input; |
| 23 | static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV; |
| 24 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 25 | static int dump_trace = 0; |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 26 | static int verbose; |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 27 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 28 | static unsigned long page_size; |
| 29 | static unsigned long mmap_window = 32; |
| 30 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 31 | const char *perf_event_names[] = { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 32 | [PERF_EVENT_MMAP] = " PERF_EVENT_MMAP", |
| 33 | [PERF_EVENT_MUNMAP] = " PERF_EVENT_MUNMAP", |
| 34 | [PERF_EVENT_COMM] = " PERF_EVENT_COMM", |
| 35 | }; |
| 36 | |
| 37 | struct ip_event { |
| 38 | struct perf_event_header header; |
| 39 | __u64 ip; |
| 40 | __u32 pid, tid; |
| 41 | }; |
| 42 | struct mmap_event { |
| 43 | struct perf_event_header header; |
| 44 | __u32 pid, tid; |
| 45 | __u64 start; |
| 46 | __u64 len; |
| 47 | __u64 pgoff; |
| 48 | char filename[PATH_MAX]; |
| 49 | }; |
| 50 | struct comm_event { |
| 51 | struct perf_event_header header; |
| 52 | __u32 pid,tid; |
| 53 | char comm[16]; |
| 54 | }; |
| 55 | |
| 56 | typedef union event_union { |
| 57 | struct perf_event_header header; |
| 58 | struct ip_event ip; |
| 59 | struct mmap_event mmap; |
| 60 | struct comm_event comm; |
| 61 | } event_t; |
| 62 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 63 | struct symbol { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 64 | struct rb_node rb_node; |
| 65 | __u64 start; |
| 66 | __u64 end; |
| 67 | char name[0]; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 68 | }; |
| 69 | |
| 70 | static struct symbol *symbol__new(uint64_t start, uint64_t len, const char *name) |
| 71 | { |
| 72 | struct symbol *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 73 | |
| 74 | if (self != NULL) { |
| 75 | self->start = start; |
| 76 | self->end = start + len; |
| 77 | strcpy(self->name, name); |
| 78 | } |
| 79 | |
| 80 | return self; |
| 81 | } |
| 82 | |
| 83 | static void symbol__delete(struct symbol *self) |
| 84 | { |
| 85 | free(self); |
| 86 | } |
| 87 | |
| 88 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 89 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 90 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 91 | self->start, self->end, self->name); |
| 92 | } |
| 93 | |
| 94 | struct dso { |
| 95 | struct list_head node; |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 96 | struct rb_root syms; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 97 | char name[0]; |
| 98 | }; |
| 99 | |
| 100 | static struct dso *dso__new(const char *name) |
| 101 | { |
| 102 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 103 | |
| 104 | if (self != NULL) { |
| 105 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 106 | self->syms = RB_ROOT; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | return self; |
| 110 | } |
| 111 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 112 | static void dso__delete_symbols(struct dso *self) |
| 113 | { |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 114 | struct symbol *pos; |
| 115 | struct rb_node *next = rb_first(&self->syms); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 116 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 117 | while (next) { |
| 118 | pos = rb_entry(next, struct symbol, rb_node); |
| 119 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 120 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 121 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | static void dso__delete(struct dso *self) |
| 125 | { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 126 | dso__delete_symbols(self); |
| 127 | free(self); |
| 128 | } |
| 129 | |
| 130 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) |
| 131 | { |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 132 | struct rb_node **p = &self->syms.rb_node; |
| 133 | struct rb_node *parent = NULL; |
| 134 | const uint64_t ip = sym->start; |
| 135 | struct symbol *s; |
| 136 | |
| 137 | while (*p != NULL) { |
| 138 | parent = *p; |
| 139 | s = rb_entry(parent, struct symbol, rb_node); |
| 140 | if (ip < s->start) |
| 141 | p = &(*p)->rb_left; |
| 142 | else |
| 143 | p = &(*p)->rb_right; |
| 144 | } |
| 145 | rb_link_node(&sym->rb_node, parent, p); |
| 146 | rb_insert_color(&sym->rb_node, &self->syms); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | static struct symbol *dso__find_symbol(struct dso *self, uint64_t ip) |
| 150 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 151 | struct rb_node *n; |
| 152 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 153 | if (self == NULL) |
| 154 | return NULL; |
| 155 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 156 | n = self->syms.rb_node; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 157 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 158 | while (n) { |
| 159 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 160 | |
| 161 | if (ip < s->start) |
| 162 | n = n->rb_left; |
| 163 | else if (ip > s->end) |
| 164 | n = n->rb_right; |
| 165 | else |
| 166 | return s; |
| 167 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 168 | |
| 169 | return NULL; |
| 170 | } |
| 171 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 172 | /** |
| 173 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 174 | * |
| 175 | * @self: struct elf_symtab instance to iterate |
| 176 | * @index: uint32_t index |
| 177 | * @sym: GElf_Sym iterator |
| 178 | */ |
| 179 | #define elf_symtab__for_each_symbol(syms, nr_syms, index, sym) \ |
| 180 | for (index = 0, gelf_getsym(syms, index, &sym);\ |
| 181 | index < nr_syms; \ |
| 182 | index++, gelf_getsym(syms, index, &sym)) |
| 183 | |
| 184 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 185 | { |
| 186 | return GELF_ST_TYPE(sym->st_info); |
| 187 | } |
| 188 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 189 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 190 | { |
| 191 | return elf_sym__type(sym) == STT_FUNC && |
| 192 | sym->st_name != 0 && |
| 193 | sym->st_shndx != SHN_UNDEF; |
| 194 | } |
| 195 | |
| 196 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 197 | const Elf_Data *symstrs) |
| 198 | { |
| 199 | return symstrs->d_buf + sym->st_name; |
| 200 | } |
| 201 | |
| 202 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 203 | GElf_Shdr *shp, const char *name, |
| 204 | size_t *index) |
| 205 | { |
| 206 | Elf_Scn *sec = NULL; |
| 207 | size_t cnt = 1; |
| 208 | |
| 209 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 210 | char *str; |
| 211 | |
| 212 | gelf_getshdr(sec, shp); |
| 213 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 214 | if (!strcmp(name, str)) { |
| 215 | if (index) |
| 216 | *index = cnt; |
| 217 | break; |
| 218 | } |
| 219 | ++cnt; |
| 220 | } |
| 221 | |
| 222 | return sec; |
| 223 | } |
| 224 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 225 | static int dso__load(struct dso *self) |
| 226 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 227 | Elf_Data *symstrs; |
| 228 | uint32_t nr_syms; |
| 229 | int fd, err = -1; |
| 230 | uint32_t index; |
| 231 | GElf_Ehdr ehdr; |
| 232 | GElf_Shdr shdr; |
| 233 | Elf_Data *syms; |
| 234 | GElf_Sym sym; |
| 235 | Elf_Scn *sec; |
| 236 | Elf *elf; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 237 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 238 | |
| 239 | fd = open(self->name, O_RDONLY); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 240 | if (fd == -1) |
| 241 | return -1; |
| 242 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 243 | elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 244 | if (elf == NULL) { |
| 245 | fprintf(stderr, "%s: cannot read %s ELF file.\n", |
| 246 | __func__, self->name); |
| 247 | goto out_close; |
| 248 | } |
| 249 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 250 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
| 251 | fprintf(stderr, "%s: cannot get elf header.\n", __func__); |
| 252 | goto out_elf_end; |
| 253 | } |
| 254 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 255 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 256 | if (sec == NULL) |
| 257 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 258 | |
| 259 | if (sec == NULL) |
| 260 | goto out_elf_end; |
| 261 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 262 | syms = elf_getdata(sec, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 263 | if (syms == NULL) |
| 264 | goto out_elf_end; |
| 265 | |
| 266 | sec = elf_getscn(elf, shdr.sh_link); |
| 267 | if (sec == NULL) |
| 268 | goto out_elf_end; |
| 269 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 270 | symstrs = elf_getdata(sec, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 271 | if (symstrs == NULL) |
| 272 | goto out_elf_end; |
| 273 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 274 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 275 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 276 | elf_symtab__for_each_symbol(syms, nr_syms, index, sym) { |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 277 | struct symbol *f; |
| 278 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 279 | if (!elf_sym__is_function(&sym)) |
| 280 | continue; |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 281 | |
| 282 | sec = elf_getscn(elf, sym.st_shndx); |
| 283 | if (!sec) |
| 284 | goto out_elf_end; |
| 285 | |
| 286 | gelf_getshdr(sec, &shdr); |
| 287 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
| 288 | |
| 289 | f = symbol__new(sym.st_value, sym.st_size, |
| 290 | elf_sym__name(&sym, symstrs)); |
| 291 | if (!f) |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 292 | goto out_elf_end; |
| 293 | |
| 294 | dso__insert_symbol(self, f); |
| 295 | } |
| 296 | |
| 297 | err = 0; |
| 298 | out_elf_end: |
| 299 | elf_end(elf); |
| 300 | out_close: |
| 301 | close(fd); |
| 302 | return err; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | static size_t dso__fprintf(struct dso *self, FILE *fp) |
| 306 | { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 307 | size_t ret = fprintf(fp, "dso: %s\n", self->name); |
| 308 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 309 | struct rb_node *nd; |
| 310 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
| 311 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 312 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 313 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 314 | |
| 315 | return ret; |
| 316 | } |
| 317 | |
| 318 | static LIST_HEAD(dsos); |
| 319 | static struct dso *kernel_dso; |
| 320 | |
| 321 | static void dsos__add(struct dso *dso) |
| 322 | { |
| 323 | list_add_tail(&dso->node, &dsos); |
| 324 | } |
| 325 | |
| 326 | static struct dso *dsos__find(const char *name) |
| 327 | { |
| 328 | struct dso *pos; |
| 329 | |
| 330 | list_for_each_entry(pos, &dsos, node) |
| 331 | if (strcmp(pos->name, name) == 0) |
| 332 | return pos; |
| 333 | return NULL; |
| 334 | } |
| 335 | |
| 336 | static struct dso *dsos__findnew(const char *name) |
| 337 | { |
| 338 | struct dso *dso = dsos__find(name); |
| 339 | |
| 340 | if (dso == NULL) { |
| 341 | dso = dso__new(name); |
| 342 | if (dso != NULL && dso__load(dso) < 0) |
| 343 | goto out_delete_dso; |
| 344 | |
| 345 | dsos__add(dso); |
| 346 | } |
| 347 | |
| 348 | return dso; |
| 349 | |
| 350 | out_delete_dso: |
| 351 | dso__delete(dso); |
| 352 | return NULL; |
| 353 | } |
| 354 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 355 | static void dsos__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 356 | { |
| 357 | struct dso *pos; |
| 358 | |
| 359 | list_for_each_entry(pos, &dsos, node) |
| 360 | dso__fprintf(pos, fp); |
| 361 | } |
| 362 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 363 | static int hex(char ch) |
| 364 | { |
| 365 | if ((ch >= '0') && (ch <= '9')) |
| 366 | return ch - '0'; |
| 367 | if ((ch >= 'a') && (ch <= 'f')) |
| 368 | return ch - 'a' + 10; |
| 369 | if ((ch >= 'A') && (ch <= 'F')) |
| 370 | return ch - 'A' + 10; |
| 371 | return -1; |
| 372 | } |
| 373 | |
| 374 | /* |
| 375 | * While we find nice hex chars, build a long_val. |
| 376 | * Return number of chars processed. |
| 377 | */ |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 378 | static int hex2long(char *ptr, unsigned long *long_val) |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 379 | { |
| 380 | const char *p = ptr; |
| 381 | *long_val = 0; |
| 382 | |
| 383 | while (*p) { |
| 384 | const int hex_val = hex(*p); |
| 385 | |
| 386 | if (hex_val < 0) |
| 387 | break; |
| 388 | |
| 389 | *long_val = (*long_val << 4) | hex_val; |
| 390 | p++; |
| 391 | } |
| 392 | |
| 393 | return p - ptr; |
| 394 | } |
| 395 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 396 | static int load_kallsyms(void) |
| 397 | { |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 398 | struct rb_node *nd, *prevnd; |
| 399 | char *line = NULL; |
| 400 | FILE *file; |
| 401 | size_t n; |
| 402 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 403 | kernel_dso = dso__new("[kernel]"); |
| 404 | if (kernel_dso == NULL) |
| 405 | return -1; |
| 406 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 407 | file = fopen("/proc/kallsyms", "r"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 408 | if (file == NULL) |
| 409 | goto out_delete_dso; |
| 410 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 411 | while (!feof(file)) { |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 412 | unsigned long start; |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 413 | struct symbol *sym; |
| 414 | int line_len, len; |
| 415 | char symbol_type; |
| 416 | |
| 417 | line_len = getline(&line, &n, file); |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 418 | if (line_len < 0) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 419 | break; |
| 420 | |
| 421 | if (!line) |
| 422 | goto out_delete_dso; |
| 423 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 424 | line[--line_len] = '\0'; /* \n */ |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 425 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 426 | len = hex2long(line, &start); |
| 427 | |
Arnaldo Carvalho de Melo | 03f6316 | 2009-05-26 19:21:55 -0300 | [diff] [blame] | 428 | len++; |
| 429 | if (len + 2 >= line_len) |
| 430 | continue; |
| 431 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 432 | symbol_type = toupper(line[len]); |
Arnaldo Carvalho de Melo | 03f6316 | 2009-05-26 19:21:55 -0300 | [diff] [blame] | 433 | /* |
| 434 | * We're interested only in code ('T'ext) |
| 435 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 436 | if (symbol_type != 'T' && symbol_type != 'W') |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 437 | continue; |
| 438 | /* |
| 439 | * Well fix up the end later, when we have all sorted. |
| 440 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 441 | sym = symbol__new(start, 0xdead, line + len + 2); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 442 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 443 | if (sym == NULL) |
| 444 | goto out_delete_dso; |
| 445 | |
| 446 | dso__insert_symbol(kernel_dso, sym); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 447 | } |
| 448 | |
Arnaldo Carvalho de Melo | abd54f6 | 2009-05-26 12:21:34 -0300 | [diff] [blame] | 449 | /* |
| 450 | * Now that we have all sorted out, just set the ->end of all |
| 451 | * symbols |
| 452 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 453 | prevnd = rb_first(&kernel_dso->syms); |
Arnaldo Carvalho de Melo | abd54f6 | 2009-05-26 12:21:34 -0300 | [diff] [blame] | 454 | |
| 455 | if (prevnd == NULL) |
| 456 | goto out_delete_line; |
| 457 | |
| 458 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 459 | struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node), |
| 460 | *curr = rb_entry(nd, struct symbol, rb_node); |
| 461 | |
| 462 | prev->end = curr->start - 1; |
| 463 | prevnd = nd; |
| 464 | } |
| 465 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 466 | dsos__add(kernel_dso); |
| 467 | free(line); |
| 468 | fclose(file); |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 469 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 470 | return 0; |
| 471 | |
Arnaldo Carvalho de Melo | 59d8102 | 2009-05-26 11:14:27 -0300 | [diff] [blame] | 472 | out_delete_line: |
| 473 | free(line); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 474 | out_delete_dso: |
| 475 | dso__delete(kernel_dso); |
| 476 | return -1; |
| 477 | } |
| 478 | |
| 479 | struct map { |
| 480 | struct list_head node; |
| 481 | uint64_t start; |
| 482 | uint64_t end; |
| 483 | uint64_t pgoff; |
| 484 | struct dso *dso; |
| 485 | }; |
| 486 | |
| 487 | static struct map *map__new(struct mmap_event *event) |
| 488 | { |
| 489 | struct map *self = malloc(sizeof(*self)); |
| 490 | |
| 491 | if (self != NULL) { |
| 492 | self->start = event->start; |
| 493 | self->end = event->start + event->len; |
| 494 | self->pgoff = event->pgoff; |
| 495 | |
| 496 | self->dso = dsos__findnew(event->filename); |
| 497 | if (self->dso == NULL) |
| 498 | goto out_delete; |
| 499 | } |
| 500 | return self; |
| 501 | out_delete: |
| 502 | free(self); |
| 503 | return NULL; |
| 504 | } |
| 505 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 506 | struct thread; |
| 507 | |
| 508 | static const char *thread__name(struct thread *self, char *bf, size_t size); |
| 509 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 510 | struct symhist { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 511 | struct rb_node rb_node; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 512 | struct dso *dso; |
| 513 | struct symbol *sym; |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 514 | struct thread *thread; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 515 | uint64_t ip; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 516 | uint32_t count; |
| 517 | char level; |
| 518 | }; |
| 519 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 520 | static struct symhist *symhist__new(struct symbol *sym, uint64_t ip, |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 521 | struct thread *thread, struct dso *dso, |
| 522 | char level) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 523 | { |
| 524 | struct symhist *self = malloc(sizeof(*self)); |
| 525 | |
| 526 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 527 | self->sym = sym; |
| 528 | self->thread = thread; |
| 529 | self->ip = ip; |
| 530 | self->dso = dso; |
| 531 | self->level = level; |
| 532 | self->count = 1; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 533 | } |
| 534 | |
| 535 | return self; |
| 536 | } |
| 537 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 538 | static void symhist__inc(struct symhist *self) |
| 539 | { |
| 540 | ++self->count; |
| 541 | } |
| 542 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 543 | static size_t |
| 544 | symhist__fprintf(struct symhist *self, uint64_t total_samples, FILE *fp) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 545 | { |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 546 | char bf[32]; |
| 547 | size_t ret; |
| 548 | |
| 549 | if (total_samples) |
| 550 | ret = fprintf(fp, "%5.2f", (self->count * 100.0) / total_samples); |
| 551 | else |
| 552 | ret = fprintf(fp, "%12d", self->count); |
| 553 | |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 554 | ret += fprintf(fp, "%14s [%c] ", |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 555 | thread__name(self->thread, bf, sizeof(bf)), |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 556 | self->level); |
| 557 | |
| 558 | if (verbose) |
| 559 | ret += fprintf(fp, "%#018llx ", (unsigned long long)self->ip); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 560 | |
| 561 | if (self->level != '.') |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 562 | ret += fprintf(fp, "%s\n", |
| 563 | self->sym ? self->sym->name : "<unknown>"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 564 | else |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 565 | ret += fprintf(fp, "%s: %s\n", |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 566 | self->dso ? self->dso->name : "<unknown>", |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 567 | self->sym ? self->sym->name : "<unknown>"); |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 568 | return ret; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | struct thread { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 572 | struct rb_node rb_node; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 573 | struct list_head maps; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 574 | struct rb_root symhists; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 575 | pid_t pid; |
| 576 | char *comm; |
| 577 | }; |
| 578 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 579 | static const char *thread__name(struct thread *self, char *bf, size_t size) |
| 580 | { |
| 581 | if (self->comm) |
| 582 | return self->comm; |
| 583 | |
| 584 | snprintf(bf, sizeof(bf), ":%u", self->pid); |
| 585 | return bf; |
| 586 | } |
| 587 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 588 | static struct thread *thread__new(pid_t pid) |
| 589 | { |
| 590 | struct thread *self = malloc(sizeof(*self)); |
| 591 | |
| 592 | if (self != NULL) { |
| 593 | self->pid = pid; |
| 594 | self->comm = NULL; |
| 595 | INIT_LIST_HEAD(&self->maps); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 596 | self->symhists = RB_ROOT; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | return self; |
| 600 | } |
| 601 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 602 | static int thread__symbol_incnew(struct thread *self, struct symbol *sym, |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 603 | uint64_t ip, struct dso *dso, char level) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 604 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 605 | struct rb_node **p = &self->symhists.rb_node; |
| 606 | struct rb_node *parent = NULL; |
| 607 | struct symhist *sh; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 608 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 609 | while (*p != NULL) { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 610 | uint64_t start; |
| 611 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 612 | parent = *p; |
| 613 | sh = rb_entry(parent, struct symhist, rb_node); |
| 614 | |
| 615 | if (sh->sym == sym || ip == sh->ip) { |
| 616 | symhist__inc(sh); |
| 617 | return 0; |
| 618 | } |
| 619 | |
| 620 | /* Handle unresolved symbols too */ |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 621 | start = !sh->sym ? sh->ip : sh->sym->start; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 622 | |
| 623 | if (ip < start) |
| 624 | p = &(*p)->rb_left; |
| 625 | else |
| 626 | p = &(*p)->rb_right; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 627 | } |
| 628 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 629 | sh = symhist__new(sym, ip, self, dso, level); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 630 | if (sh == NULL) |
| 631 | return -ENOMEM; |
| 632 | rb_link_node(&sh->rb_node, parent, p); |
| 633 | rb_insert_color(&sh->rb_node, &self->symhists); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 634 | return 0; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 635 | } |
| 636 | |
| 637 | static int thread__set_comm(struct thread *self, const char *comm) |
| 638 | { |
| 639 | self->comm = strdup(comm); |
| 640 | return self->comm ? 0 : -ENOMEM; |
| 641 | } |
| 642 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 643 | static size_t thread__fprintf(struct thread *self, FILE *fp) |
| 644 | { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 645 | int ret = fprintf(fp, "thread: %d %s\n", self->pid, self->comm); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 646 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 647 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 648 | for (nd = rb_first(&self->symhists); nd; nd = rb_next(nd)) { |
| 649 | struct symhist *pos = rb_entry(nd, struct symhist, rb_node); |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 650 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 651 | ret += symhist__fprintf(pos, 0, fp); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 652 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 653 | |
| 654 | return ret; |
| 655 | } |
| 656 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 657 | static struct rb_root threads; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 658 | |
| 659 | static struct thread *threads__findnew(pid_t pid) |
| 660 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 661 | struct rb_node **p = &threads.rb_node; |
| 662 | struct rb_node *parent = NULL; |
| 663 | struct thread *th; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 664 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 665 | while (*p != NULL) { |
| 666 | parent = *p; |
| 667 | th = rb_entry(parent, struct thread, rb_node); |
| 668 | |
| 669 | if (th->pid == pid) |
| 670 | return th; |
| 671 | |
| 672 | if (pid < th->pid) |
| 673 | p = &(*p)->rb_left; |
| 674 | else |
| 675 | p = &(*p)->rb_right; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 676 | } |
| 677 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 678 | th = thread__new(pid); |
| 679 | if (th != NULL) { |
| 680 | rb_link_node(&th->rb_node, parent, p); |
| 681 | rb_insert_color(&th->rb_node, &threads); |
| 682 | } |
| 683 | return th; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | static void thread__insert_map(struct thread *self, struct map *map) |
| 687 | { |
| 688 | list_add_tail(&map->node, &self->maps); |
| 689 | } |
| 690 | |
| 691 | static struct map *thread__find_map(struct thread *self, uint64_t ip) |
| 692 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 693 | struct map *pos; |
| 694 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 695 | if (self == NULL) |
| 696 | return NULL; |
| 697 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 698 | list_for_each_entry(pos, &self->maps, node) |
| 699 | if (ip >= pos->start && ip <= pos->end) |
| 700 | return pos; |
| 701 | |
| 702 | return NULL; |
| 703 | } |
| 704 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 705 | static void threads__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 706 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 707 | struct rb_node *nd; |
| 708 | for (nd = rb_first(&threads); nd; nd = rb_next(nd)) { |
| 709 | struct thread *pos = rb_entry(nd, struct thread, rb_node); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 710 | thread__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 711 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 712 | } |
| 713 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 714 | static struct rb_root global_symhists; |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 715 | |
| 716 | static void threads__insert_symhist(struct symhist *sh) |
| 717 | { |
| 718 | struct rb_node **p = &global_symhists.rb_node; |
| 719 | struct rb_node *parent = NULL; |
| 720 | struct symhist *iter; |
| 721 | |
| 722 | while (*p != NULL) { |
| 723 | parent = *p; |
| 724 | iter = rb_entry(parent, struct symhist, rb_node); |
| 725 | |
| 726 | /* Reverse order */ |
| 727 | if (sh->count > iter->count) |
| 728 | p = &(*p)->rb_left; |
| 729 | else |
| 730 | p = &(*p)->rb_right; |
| 731 | } |
| 732 | |
| 733 | rb_link_node(&sh->rb_node, parent, p); |
| 734 | rb_insert_color(&sh->rb_node, &global_symhists); |
| 735 | } |
| 736 | |
| 737 | static void threads__sort_symhists(void) |
| 738 | { |
| 739 | struct rb_node *nd; |
| 740 | |
| 741 | for (nd = rb_first(&threads); nd; nd = rb_next(nd)) { |
| 742 | struct thread *thread = rb_entry(nd, struct thread, rb_node); |
| 743 | struct rb_node *next = rb_first(&thread->symhists); |
| 744 | |
| 745 | while (next) { |
| 746 | struct symhist *n = rb_entry(next, struct symhist, |
| 747 | rb_node); |
| 748 | next = rb_next(&n->rb_node); |
| 749 | rb_erase(&n->rb_node, &thread->symhists); |
| 750 | threads__insert_symhist(n); |
| 751 | } |
| 752 | |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | static size_t threads__symhists_fprintf(uint64_t total_samples, FILE *fp) |
| 757 | { |
| 758 | struct rb_node *nd; |
| 759 | size_t ret = 0; |
| 760 | |
| 761 | for (nd = rb_first(&global_symhists); nd; nd = rb_next(nd)) { |
| 762 | struct symhist *pos = rb_entry(nd, struct symhist, rb_node); |
| 763 | ret += symhist__fprintf(pos, total_samples, fp); |
| 764 | } |
| 765 | |
| 766 | return ret; |
| 767 | } |
| 768 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 769 | static int __cmd_report(void) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 770 | { |
| 771 | unsigned long offset = 0; |
| 772 | unsigned long head = 0; |
| 773 | struct stat stat; |
| 774 | char *buf; |
| 775 | event_t *event; |
| 776 | int ret, rc = EXIT_FAILURE; |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 777 | uint32_t size; |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 778 | unsigned long total = 0, total_mmap = 0, total_comm = 0, total_unknown = 0; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 779 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 780 | input = open(input_name, O_RDONLY); |
| 781 | if (input < 0) { |
| 782 | perror("failed to open file"); |
| 783 | exit(-1); |
| 784 | } |
| 785 | |
| 786 | ret = fstat(input, &stat); |
| 787 | if (ret < 0) { |
| 788 | perror("failed to stat file"); |
| 789 | exit(-1); |
| 790 | } |
| 791 | |
| 792 | if (!stat.st_size) { |
| 793 | fprintf(stderr, "zero-sized file, nothing to do!\n"); |
| 794 | exit(0); |
| 795 | } |
| 796 | |
| 797 | if (load_kallsyms() < 0) { |
| 798 | perror("failed to open kallsyms"); |
| 799 | return EXIT_FAILURE; |
| 800 | } |
| 801 | |
| 802 | remap: |
| 803 | buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, |
| 804 | MAP_SHARED, input, offset); |
| 805 | if (buf == MAP_FAILED) { |
| 806 | perror("failed to mmap file"); |
| 807 | exit(-1); |
| 808 | } |
| 809 | |
| 810 | more: |
| 811 | event = (event_t *)(buf + head); |
| 812 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 813 | size = event->header.size; |
| 814 | if (!size) |
| 815 | size = 8; |
| 816 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 817 | if (head + event->header.size >= page_size * mmap_window) { |
| 818 | unsigned long shift = page_size * (head / page_size); |
| 819 | int ret; |
| 820 | |
| 821 | ret = munmap(buf, page_size * mmap_window); |
| 822 | assert(ret == 0); |
| 823 | |
| 824 | offset += shift; |
| 825 | head -= shift; |
| 826 | goto remap; |
| 827 | } |
| 828 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 829 | size = event->header.size; |
| 830 | if (!size) |
| 831 | goto broken_event; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 832 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 833 | if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) { |
| 834 | char level; |
| 835 | int show = 0; |
| 836 | struct dso *dso = NULL; |
| 837 | struct thread *thread = threads__findnew(event->ip.pid); |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 838 | uint64_t ip = event->ip.ip; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 839 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 840 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 841 | fprintf(stderr, "%p [%p]: PERF_EVENT (IP, %d): %d: %p\n", |
| 842 | (void *)(offset + head), |
| 843 | (void *)(long)(event->header.size), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 844 | event->header.misc, |
| 845 | event->ip.pid, |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 846 | (void *)(long)ip); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 847 | } |
| 848 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 849 | if (thread == NULL) { |
| 850 | fprintf(stderr, "problem processing %d event, bailing out\n", |
| 851 | event->header.type); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 852 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 853 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 854 | |
| 855 | if (event->header.misc & PERF_EVENT_MISC_KERNEL) { |
| 856 | show = SHOW_KERNEL; |
| 857 | level = 'k'; |
| 858 | dso = kernel_dso; |
| 859 | } else if (event->header.misc & PERF_EVENT_MISC_USER) { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 860 | struct map *map; |
| 861 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 862 | show = SHOW_USER; |
| 863 | level = '.'; |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 864 | |
| 865 | map = thread__find_map(thread, ip); |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 866 | if (map != NULL) { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 867 | dso = map->dso; |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 868 | ip -= map->start + map->pgoff; |
| 869 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 870 | } else { |
| 871 | show = SHOW_HV; |
| 872 | level = 'H'; |
| 873 | } |
| 874 | |
| 875 | if (show & show_mask) { |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 876 | struct symbol *sym = dso__find_symbol(dso, ip); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 877 | |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 878 | if (thread__symbol_incnew(thread, sym, ip, dso, level)) { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 879 | fprintf(stderr, "problem incrementing symbol count, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 880 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 881 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 882 | } |
| 883 | total++; |
| 884 | } else switch (event->header.type) { |
| 885 | case PERF_EVENT_MMAP: { |
| 886 | struct thread *thread = threads__findnew(event->mmap.pid); |
| 887 | struct map *map = map__new(&event->mmap); |
| 888 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 889 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 890 | fprintf(stderr, "%p [%p]: PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n", |
| 891 | (void *)(offset + head), |
| 892 | (void *)(long)(event->header.size), |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 893 | (void *)(long)event->mmap.start, |
| 894 | (void *)(long)event->mmap.len, |
| 895 | (void *)(long)event->mmap.pgoff, |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 896 | event->mmap.filename); |
| 897 | } |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 898 | if (thread == NULL || map == NULL) { |
| 899 | fprintf(stderr, "problem processing PERF_EVENT_MMAP, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 900 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 901 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 902 | thread__insert_map(thread, map); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 903 | total_mmap++; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 904 | break; |
| 905 | } |
| 906 | case PERF_EVENT_COMM: { |
| 907 | struct thread *thread = threads__findnew(event->comm.pid); |
| 908 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 909 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 910 | fprintf(stderr, "%p [%p]: PERF_EVENT_COMM: %s:%d\n", |
| 911 | (void *)(offset + head), |
| 912 | (void *)(long)(event->header.size), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 913 | event->comm.comm, event->comm.pid); |
| 914 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 915 | if (thread == NULL || |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 916 | thread__set_comm(thread, event->comm.comm)) { |
| 917 | fprintf(stderr, "problem processing PERF_EVENT_COMM, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 918 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 919 | } |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 920 | total_comm++; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 921 | break; |
| 922 | } |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 923 | default: { |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 924 | broken_event: |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 925 | fprintf(stderr, "%p [%p]: skipping unknown header type: %d\n", |
| 926 | (void *)(offset + head), |
| 927 | (void *)(long)(event->header.size), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 928 | event->header.type); |
Ingo Molnar | 3e70611 | 2009-05-26 18:53:17 +0200 | [diff] [blame] | 929 | total_unknown++; |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 930 | |
| 931 | /* |
| 932 | * assume we lost track of the stream, check alignment, and |
| 933 | * increment a single u64 in the hope to catch on again 'soon'. |
| 934 | */ |
| 935 | |
| 936 | if (unlikely(head & 7)) |
| 937 | head &= ~7ULL; |
| 938 | |
| 939 | size = 8; |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 940 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 941 | } |
| 942 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 943 | head += size; |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 944 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 945 | if (offset + head < stat.st_size) |
| 946 | goto more; |
| 947 | |
| 948 | rc = EXIT_SUCCESS; |
| 949 | done: |
| 950 | close(input); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 951 | |
| 952 | if (dump_trace) { |
Ingo Molnar | 3e70611 | 2009-05-26 18:53:17 +0200 | [diff] [blame] | 953 | fprintf(stderr, " IP events: %10ld\n", total); |
| 954 | fprintf(stderr, " mmap events: %10ld\n", total_mmap); |
| 955 | fprintf(stderr, " comm events: %10ld\n", total_comm); |
| 956 | fprintf(stderr, " unknown events: %10ld\n", total_unknown); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 957 | |
| 958 | return 0; |
| 959 | } |
| 960 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 961 | if (verbose >= 2) { |
| 962 | dsos__fprintf(stdout); |
| 963 | threads__fprintf(stdout); |
| 964 | } |
| 965 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 966 | threads__sort_symhists(); |
| 967 | threads__symhists_fprintf(total, stdout); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 968 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 969 | return rc; |
| 970 | } |
| 971 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 972 | static const char * const report_usage[] = { |
| 973 | "perf report [<options>] <command>", |
| 974 | NULL |
| 975 | }; |
| 976 | |
| 977 | static const struct option options[] = { |
| 978 | OPT_STRING('i', "input", &input_name, "file", |
| 979 | "input file name"), |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 980 | OPT_BOOLEAN('v', "verbose", &verbose, |
| 981 | "be more verbose (show symbol address, etc)"), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 982 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| 983 | "dump raw trace in ASCII"), |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 984 | OPT_END() |
| 985 | }; |
| 986 | |
| 987 | int cmd_report(int argc, const char **argv, const char *prefix) |
| 988 | { |
| 989 | elf_version(EV_CURRENT); |
| 990 | |
| 991 | page_size = getpagesize(); |
| 992 | |
| 993 | parse_options(argc, argv, options, report_usage, 0); |
| 994 | |
| 995 | return __cmd_report(); |
| 996 | } |