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 | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 7 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 8 | #include "util/list.h" |
Ingo Molnar | a930d2c | 2009-05-27 09:50:13 +0200 | [diff] [blame] | 9 | #include "util/cache.h" |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 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 && |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 193 | sym->st_shndx != SHN_UNDEF && |
| 194 | sym->st_size != 0; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 198 | const Elf_Data *symstrs) |
| 199 | { |
| 200 | return symstrs->d_buf + sym->st_name; |
| 201 | } |
| 202 | |
| 203 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 204 | GElf_Shdr *shp, const char *name, |
| 205 | size_t *index) |
| 206 | { |
| 207 | Elf_Scn *sec = NULL; |
| 208 | size_t cnt = 1; |
| 209 | |
| 210 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 211 | char *str; |
| 212 | |
| 213 | gelf_getshdr(sec, shp); |
| 214 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 215 | if (!strcmp(name, str)) { |
| 216 | if (index) |
| 217 | *index = cnt; |
| 218 | break; |
| 219 | } |
| 220 | ++cnt; |
| 221 | } |
| 222 | |
| 223 | return sec; |
| 224 | } |
| 225 | |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 226 | static int dso__load_sym(struct dso *self, int fd, char *name) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 227 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 228 | Elf_Data *symstrs; |
| 229 | uint32_t nr_syms; |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 230 | int err = -1; |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 231 | uint32_t index; |
| 232 | GElf_Ehdr ehdr; |
| 233 | GElf_Shdr shdr; |
| 234 | Elf_Data *syms; |
| 235 | GElf_Sym sym; |
| 236 | Elf_Scn *sec; |
| 237 | Elf *elf; |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 238 | int nr = 0; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 239 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 240 | elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 241 | if (elf == NULL) { |
| 242 | fprintf(stderr, "%s: cannot read %s ELF file.\n", |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 243 | __func__, name); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 244 | goto out_close; |
| 245 | } |
| 246 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 247 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
| 248 | fprintf(stderr, "%s: cannot get elf header.\n", __func__); |
| 249 | goto out_elf_end; |
| 250 | } |
| 251 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 252 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 253 | if (sec == NULL) |
| 254 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 255 | |
| 256 | if (sec == NULL) |
| 257 | goto out_elf_end; |
| 258 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 259 | syms = elf_getdata(sec, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 260 | if (syms == NULL) |
| 261 | goto out_elf_end; |
| 262 | |
| 263 | sec = elf_getscn(elf, shdr.sh_link); |
| 264 | if (sec == NULL) |
| 265 | goto out_elf_end; |
| 266 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 267 | symstrs = elf_getdata(sec, NULL); |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 268 | if (symstrs == NULL) |
| 269 | goto out_elf_end; |
| 270 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 271 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 272 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 273 | elf_symtab__for_each_symbol(syms, nr_syms, index, sym) { |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 274 | struct symbol *f; |
| 275 | |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 276 | if (!elf_sym__is_function(&sym)) |
| 277 | continue; |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 278 | |
| 279 | sec = elf_getscn(elf, sym.st_shndx); |
| 280 | if (!sec) |
| 281 | goto out_elf_end; |
| 282 | |
| 283 | gelf_getshdr(sec, &shdr); |
| 284 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
| 285 | |
| 286 | f = symbol__new(sym.st_value, sym.st_size, |
| 287 | elf_sym__name(&sym, symstrs)); |
| 288 | if (!f) |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 289 | goto out_elf_end; |
| 290 | |
| 291 | dso__insert_symbol(self, f); |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 292 | |
| 293 | nr++; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 294 | } |
| 295 | |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 296 | err = nr; |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 297 | out_elf_end: |
| 298 | elf_end(elf); |
| 299 | out_close: |
Arnaldo Carvalho de Melo | 62eb939 | 2009-05-18 14:28:47 -0300 | [diff] [blame] | 300 | return err; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 301 | } |
| 302 | |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 303 | static int dso__load(struct dso *self) |
| 304 | { |
| 305 | int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug"); |
| 306 | char *name = malloc(size); |
| 307 | int variant = 0; |
| 308 | int ret = -1; |
| 309 | int fd; |
| 310 | |
| 311 | if (!name) |
| 312 | return -1; |
| 313 | |
| 314 | more: |
| 315 | do { |
| 316 | switch (variant) { |
| 317 | case 0: /* Fedora */ |
| 318 | snprintf(name, size, "/usr/lib/debug%s.debug", self->name); |
| 319 | break; |
| 320 | case 1: /* Ubuntu */ |
| 321 | snprintf(name, size, "/usr/lib/debug%s", self->name); |
| 322 | break; |
| 323 | case 2: /* Sane people */ |
| 324 | snprintf(name, size, "%s", self->name); |
| 325 | break; |
| 326 | |
| 327 | default: |
| 328 | goto out; |
| 329 | } |
| 330 | variant++; |
| 331 | |
| 332 | fd = open(name, O_RDONLY); |
| 333 | } while (fd < 0); |
| 334 | |
| 335 | ret = dso__load_sym(self, fd, name); |
| 336 | close(fd); |
| 337 | |
| 338 | /* |
| 339 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 340 | */ |
| 341 | if (!ret) |
| 342 | goto more; |
| 343 | |
| 344 | out: |
| 345 | free(name); |
| 346 | return ret; |
| 347 | } |
| 348 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 349 | static size_t dso__fprintf(struct dso *self, FILE *fp) |
| 350 | { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 351 | size_t ret = fprintf(fp, "dso: %s\n", self->name); |
| 352 | |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 353 | struct rb_node *nd; |
| 354 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
| 355 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 356 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | 35a50c8 | 2009-05-18 16:24:49 -0300 | [diff] [blame] | 357 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 358 | |
| 359 | return ret; |
| 360 | } |
| 361 | |
| 362 | static LIST_HEAD(dsos); |
| 363 | static struct dso *kernel_dso; |
| 364 | |
| 365 | static void dsos__add(struct dso *dso) |
| 366 | { |
| 367 | list_add_tail(&dso->node, &dsos); |
| 368 | } |
| 369 | |
| 370 | static struct dso *dsos__find(const char *name) |
| 371 | { |
| 372 | struct dso *pos; |
| 373 | |
| 374 | list_for_each_entry(pos, &dsos, node) |
| 375 | if (strcmp(pos->name, name) == 0) |
| 376 | return pos; |
| 377 | return NULL; |
| 378 | } |
| 379 | |
| 380 | static struct dso *dsos__findnew(const char *name) |
| 381 | { |
| 382 | struct dso *dso = dsos__find(name); |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 383 | int nr; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 384 | |
| 385 | if (dso == NULL) { |
| 386 | dso = dso__new(name); |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 387 | if (!dso) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 388 | goto out_delete_dso; |
| 389 | |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 390 | nr = dso__load(dso); |
| 391 | if (nr < 0) { |
| 392 | fprintf(stderr, "Failed to open: %s\n", name); |
| 393 | goto out_delete_dso; |
| 394 | } |
| 395 | if (!nr) { |
| 396 | fprintf(stderr, |
| 397 | "Failed to find debug symbols for: %s, maybe install a debug package?\n", |
| 398 | name); |
| 399 | } |
| 400 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 401 | dsos__add(dso); |
| 402 | } |
| 403 | |
| 404 | return dso; |
| 405 | |
| 406 | out_delete_dso: |
| 407 | dso__delete(dso); |
| 408 | return NULL; |
| 409 | } |
| 410 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 411 | static void dsos__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 412 | { |
| 413 | struct dso *pos; |
| 414 | |
| 415 | list_for_each_entry(pos, &dsos, node) |
| 416 | dso__fprintf(pos, fp); |
| 417 | } |
| 418 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 419 | static int hex(char ch) |
| 420 | { |
| 421 | if ((ch >= '0') && (ch <= '9')) |
| 422 | return ch - '0'; |
| 423 | if ((ch >= 'a') && (ch <= 'f')) |
| 424 | return ch - 'a' + 10; |
| 425 | if ((ch >= 'A') && (ch <= 'F')) |
| 426 | return ch - 'A' + 10; |
| 427 | return -1; |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * While we find nice hex chars, build a long_val. |
| 432 | * Return number of chars processed. |
| 433 | */ |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 434 | static int hex2long(char *ptr, unsigned long *long_val) |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 435 | { |
| 436 | const char *p = ptr; |
| 437 | *long_val = 0; |
| 438 | |
| 439 | while (*p) { |
| 440 | const int hex_val = hex(*p); |
| 441 | |
| 442 | if (hex_val < 0) |
| 443 | break; |
| 444 | |
| 445 | *long_val = (*long_val << 4) | hex_val; |
| 446 | p++; |
| 447 | } |
| 448 | |
| 449 | return p - ptr; |
| 450 | } |
| 451 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 452 | static int load_kallsyms(void) |
| 453 | { |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 454 | struct rb_node *nd, *prevnd; |
| 455 | char *line = NULL; |
| 456 | FILE *file; |
| 457 | size_t n; |
| 458 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 459 | kernel_dso = dso__new("[kernel]"); |
| 460 | if (kernel_dso == NULL) |
| 461 | return -1; |
| 462 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 463 | file = fopen("/proc/kallsyms", "r"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 464 | if (file == NULL) |
| 465 | goto out_delete_dso; |
| 466 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 467 | while (!feof(file)) { |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 468 | unsigned long start; |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 469 | struct symbol *sym; |
| 470 | int line_len, len; |
| 471 | char symbol_type; |
| 472 | |
| 473 | line_len = getline(&line, &n, file); |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 474 | if (line_len < 0) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 475 | break; |
| 476 | |
| 477 | if (!line) |
| 478 | goto out_delete_dso; |
| 479 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 480 | line[--line_len] = '\0'; /* \n */ |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 481 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 482 | len = hex2long(line, &start); |
| 483 | |
Arnaldo Carvalho de Melo | 03f6316 | 2009-05-26 19:21:55 -0300 | [diff] [blame] | 484 | len++; |
| 485 | if (len + 2 >= line_len) |
| 486 | continue; |
| 487 | |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 488 | symbol_type = toupper(line[len]); |
Arnaldo Carvalho de Melo | 03f6316 | 2009-05-26 19:21:55 -0300 | [diff] [blame] | 489 | /* |
| 490 | * We're interested only in code ('T'ext) |
| 491 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 492 | if (symbol_type != 'T' && symbol_type != 'W') |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 493 | continue; |
| 494 | /* |
| 495 | * Well fix up the end later, when we have all sorted. |
| 496 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 497 | sym = symbol__new(start, 0xdead, line + len + 2); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 498 | |
Arnaldo Carvalho de Melo | d8d1656 | 2009-05-26 19:20:57 -0300 | [diff] [blame] | 499 | if (sym == NULL) |
| 500 | goto out_delete_dso; |
| 501 | |
| 502 | dso__insert_symbol(kernel_dso, sym); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 503 | } |
| 504 | |
Arnaldo Carvalho de Melo | abd54f6 | 2009-05-26 12:21:34 -0300 | [diff] [blame] | 505 | /* |
| 506 | * Now that we have all sorted out, just set the ->end of all |
| 507 | * symbols |
| 508 | */ |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 509 | prevnd = rb_first(&kernel_dso->syms); |
Arnaldo Carvalho de Melo | abd54f6 | 2009-05-26 12:21:34 -0300 | [diff] [blame] | 510 | |
| 511 | if (prevnd == NULL) |
| 512 | goto out_delete_line; |
| 513 | |
| 514 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 515 | struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node), |
| 516 | *curr = rb_entry(nd, struct symbol, rb_node); |
| 517 | |
| 518 | prev->end = curr->start - 1; |
| 519 | prevnd = nd; |
| 520 | } |
| 521 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 522 | dsos__add(kernel_dso); |
| 523 | free(line); |
| 524 | fclose(file); |
Ingo Molnar | af83632 | 2009-05-27 08:38:48 +0200 | [diff] [blame] | 525 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 526 | return 0; |
| 527 | |
Arnaldo Carvalho de Melo | 59d8102 | 2009-05-26 11:14:27 -0300 | [diff] [blame] | 528 | out_delete_line: |
| 529 | free(line); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 530 | out_delete_dso: |
| 531 | dso__delete(kernel_dso); |
| 532 | return -1; |
| 533 | } |
| 534 | |
| 535 | struct map { |
| 536 | struct list_head node; |
| 537 | uint64_t start; |
| 538 | uint64_t end; |
| 539 | uint64_t pgoff; |
| 540 | struct dso *dso; |
| 541 | }; |
| 542 | |
| 543 | static struct map *map__new(struct mmap_event *event) |
| 544 | { |
| 545 | struct map *self = malloc(sizeof(*self)); |
| 546 | |
| 547 | if (self != NULL) { |
| 548 | self->start = event->start; |
| 549 | self->end = event->start + event->len; |
| 550 | self->pgoff = event->pgoff; |
| 551 | |
| 552 | self->dso = dsos__findnew(event->filename); |
| 553 | if (self->dso == NULL) |
| 554 | goto out_delete; |
| 555 | } |
| 556 | return self; |
| 557 | out_delete: |
| 558 | free(self); |
| 559 | return NULL; |
| 560 | } |
| 561 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 562 | struct thread; |
| 563 | |
| 564 | static const char *thread__name(struct thread *self, char *bf, size_t size); |
| 565 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 566 | struct symhist { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 567 | struct rb_node rb_node; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 568 | struct dso *dso; |
| 569 | struct symbol *sym; |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 570 | struct thread *thread; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 571 | uint64_t ip; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 572 | uint32_t count; |
| 573 | char level; |
| 574 | }; |
| 575 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 576 | 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] | 577 | struct thread *thread, struct dso *dso, |
| 578 | char level) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 579 | { |
| 580 | struct symhist *self = malloc(sizeof(*self)); |
| 581 | |
| 582 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 583 | self->sym = sym; |
| 584 | self->thread = thread; |
| 585 | self->ip = ip; |
| 586 | self->dso = dso; |
| 587 | self->level = level; |
| 588 | self->count = 1; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | return self; |
| 592 | } |
| 593 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 594 | static void symhist__inc(struct symhist *self) |
| 595 | { |
| 596 | ++self->count; |
| 597 | } |
| 598 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 599 | static size_t |
| 600 | 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] | 601 | { |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 602 | char bf[32]; |
| 603 | size_t ret; |
| 604 | |
| 605 | if (total_samples) |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 606 | ret = fprintf(fp, "%5.2f%% ", (self->count * 100.0) / total_samples); |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 607 | else |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 608 | ret = fprintf(fp, "%12d ", self->count); |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 609 | |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 610 | ret += fprintf(fp, "%14s [%c] ", |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 611 | thread__name(self->thread, bf, sizeof(bf)), |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 612 | self->level); |
| 613 | |
| 614 | if (verbose) |
| 615 | ret += fprintf(fp, "%#018llx ", (unsigned long long)self->ip); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 616 | |
| 617 | if (self->level != '.') |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 618 | ret += fprintf(fp, "%s\n", |
| 619 | self->sym ? self->sym->name : "<unknown>"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 620 | else |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 621 | ret += fprintf(fp, "%s: %s\n", |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 622 | self->dso ? self->dso->name : "<unknown>", |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 623 | self->sym ? self->sym->name : "<unknown>"); |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 624 | return ret; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | struct thread { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 628 | struct rb_node rb_node; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 629 | struct list_head maps; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 630 | struct rb_root symhists; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 631 | pid_t pid; |
| 632 | char *comm; |
| 633 | }; |
| 634 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 635 | static const char *thread__name(struct thread *self, char *bf, size_t size) |
| 636 | { |
| 637 | if (self->comm) |
| 638 | return self->comm; |
| 639 | |
| 640 | snprintf(bf, sizeof(bf), ":%u", self->pid); |
| 641 | return bf; |
| 642 | } |
| 643 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 644 | static struct thread *thread__new(pid_t pid) |
| 645 | { |
| 646 | struct thread *self = malloc(sizeof(*self)); |
| 647 | |
| 648 | if (self != NULL) { |
| 649 | self->pid = pid; |
| 650 | self->comm = NULL; |
| 651 | INIT_LIST_HEAD(&self->maps); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 652 | self->symhists = RB_ROOT; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | return self; |
| 656 | } |
| 657 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 658 | 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] | 659 | uint64_t ip, struct dso *dso, char level) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 660 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 661 | struct rb_node **p = &self->symhists.rb_node; |
| 662 | struct rb_node *parent = NULL; |
| 663 | struct symhist *sh; |
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) { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 666 | uint64_t start; |
| 667 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 668 | parent = *p; |
| 669 | sh = rb_entry(parent, struct symhist, rb_node); |
| 670 | |
| 671 | if (sh->sym == sym || ip == sh->ip) { |
| 672 | symhist__inc(sh); |
| 673 | return 0; |
| 674 | } |
| 675 | |
| 676 | /* Handle unresolved symbols too */ |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 677 | start = !sh->sym ? sh->ip : sh->sym->start; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 678 | |
| 679 | if (ip < start) |
| 680 | p = &(*p)->rb_left; |
| 681 | else |
| 682 | p = &(*p)->rb_right; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 683 | } |
| 684 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 685 | sh = symhist__new(sym, ip, self, dso, level); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 686 | if (sh == NULL) |
| 687 | return -ENOMEM; |
| 688 | rb_link_node(&sh->rb_node, parent, p); |
| 689 | rb_insert_color(&sh->rb_node, &self->symhists); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 690 | return 0; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | static int thread__set_comm(struct thread *self, const char *comm) |
| 694 | { |
| 695 | self->comm = strdup(comm); |
| 696 | return self->comm ? 0 : -ENOMEM; |
| 697 | } |
| 698 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 699 | static size_t thread__fprintf(struct thread *self, FILE *fp) |
| 700 | { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 701 | 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] | 702 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 703 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 704 | for (nd = rb_first(&self->symhists); nd; nd = rb_next(nd)) { |
| 705 | struct symhist *pos = rb_entry(nd, struct symhist, rb_node); |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 706 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 707 | ret += symhist__fprintf(pos, 0, fp); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 708 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 709 | |
| 710 | return ret; |
| 711 | } |
| 712 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 713 | static struct rb_root threads; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 714 | |
| 715 | static struct thread *threads__findnew(pid_t pid) |
| 716 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 717 | struct rb_node **p = &threads.rb_node; |
| 718 | struct rb_node *parent = NULL; |
| 719 | struct thread *th; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 720 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 721 | while (*p != NULL) { |
| 722 | parent = *p; |
| 723 | th = rb_entry(parent, struct thread, rb_node); |
| 724 | |
| 725 | if (th->pid == pid) |
| 726 | return th; |
| 727 | |
| 728 | if (pid < th->pid) |
| 729 | p = &(*p)->rb_left; |
| 730 | else |
| 731 | p = &(*p)->rb_right; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 732 | } |
| 733 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 734 | th = thread__new(pid); |
| 735 | if (th != NULL) { |
| 736 | rb_link_node(&th->rb_node, parent, p); |
| 737 | rb_insert_color(&th->rb_node, &threads); |
| 738 | } |
| 739 | return th; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 740 | } |
| 741 | |
| 742 | static void thread__insert_map(struct thread *self, struct map *map) |
| 743 | { |
| 744 | list_add_tail(&map->node, &self->maps); |
| 745 | } |
| 746 | |
| 747 | static struct map *thread__find_map(struct thread *self, uint64_t ip) |
| 748 | { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 749 | struct map *pos; |
| 750 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 751 | if (self == NULL) |
| 752 | return NULL; |
| 753 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 754 | list_for_each_entry(pos, &self->maps, node) |
| 755 | if (ip >= pos->start && ip <= pos->end) |
| 756 | return pos; |
| 757 | |
| 758 | return NULL; |
| 759 | } |
| 760 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 761 | static void threads__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 762 | { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 763 | struct rb_node *nd; |
| 764 | for (nd = rb_first(&threads); nd; nd = rb_next(nd)) { |
| 765 | struct thread *pos = rb_entry(nd, struct thread, rb_node); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 766 | thread__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 767 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 768 | } |
| 769 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 770 | static struct rb_root global_symhists; |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 771 | |
| 772 | static void threads__insert_symhist(struct symhist *sh) |
| 773 | { |
| 774 | struct rb_node **p = &global_symhists.rb_node; |
| 775 | struct rb_node *parent = NULL; |
| 776 | struct symhist *iter; |
| 777 | |
| 778 | while (*p != NULL) { |
| 779 | parent = *p; |
| 780 | iter = rb_entry(parent, struct symhist, rb_node); |
| 781 | |
| 782 | /* Reverse order */ |
| 783 | if (sh->count > iter->count) |
| 784 | p = &(*p)->rb_left; |
| 785 | else |
| 786 | p = &(*p)->rb_right; |
| 787 | } |
| 788 | |
| 789 | rb_link_node(&sh->rb_node, parent, p); |
| 790 | rb_insert_color(&sh->rb_node, &global_symhists); |
| 791 | } |
| 792 | |
| 793 | static void threads__sort_symhists(void) |
| 794 | { |
| 795 | struct rb_node *nd; |
| 796 | |
| 797 | for (nd = rb_first(&threads); nd; nd = rb_next(nd)) { |
| 798 | struct thread *thread = rb_entry(nd, struct thread, rb_node); |
| 799 | struct rb_node *next = rb_first(&thread->symhists); |
| 800 | |
| 801 | while (next) { |
| 802 | struct symhist *n = rb_entry(next, struct symhist, |
| 803 | rb_node); |
| 804 | next = rb_next(&n->rb_node); |
| 805 | rb_erase(&n->rb_node, &thread->symhists); |
| 806 | threads__insert_symhist(n); |
| 807 | } |
| 808 | |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | static size_t threads__symhists_fprintf(uint64_t total_samples, FILE *fp) |
| 813 | { |
| 814 | struct rb_node *nd; |
| 815 | size_t ret = 0; |
| 816 | |
| 817 | for (nd = rb_first(&global_symhists); nd; nd = rb_next(nd)) { |
| 818 | struct symhist *pos = rb_entry(nd, struct symhist, rb_node); |
| 819 | ret += symhist__fprintf(pos, total_samples, fp); |
| 820 | } |
| 821 | |
| 822 | return ret; |
| 823 | } |
| 824 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 825 | static int __cmd_report(void) |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 826 | { |
| 827 | unsigned long offset = 0; |
| 828 | unsigned long head = 0; |
| 829 | struct stat stat; |
| 830 | char *buf; |
| 831 | event_t *event; |
| 832 | int ret, rc = EXIT_FAILURE; |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 833 | uint32_t size; |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 834 | 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] | 835 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 836 | input = open(input_name, O_RDONLY); |
| 837 | if (input < 0) { |
| 838 | perror("failed to open file"); |
| 839 | exit(-1); |
| 840 | } |
| 841 | |
| 842 | ret = fstat(input, &stat); |
| 843 | if (ret < 0) { |
| 844 | perror("failed to stat file"); |
| 845 | exit(-1); |
| 846 | } |
| 847 | |
| 848 | if (!stat.st_size) { |
| 849 | fprintf(stderr, "zero-sized file, nothing to do!\n"); |
| 850 | exit(0); |
| 851 | } |
| 852 | |
| 853 | if (load_kallsyms() < 0) { |
| 854 | perror("failed to open kallsyms"); |
| 855 | return EXIT_FAILURE; |
| 856 | } |
| 857 | |
| 858 | remap: |
| 859 | buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, |
| 860 | MAP_SHARED, input, offset); |
| 861 | if (buf == MAP_FAILED) { |
| 862 | perror("failed to mmap file"); |
| 863 | exit(-1); |
| 864 | } |
| 865 | |
| 866 | more: |
| 867 | event = (event_t *)(buf + head); |
| 868 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 869 | size = event->header.size; |
| 870 | if (!size) |
| 871 | size = 8; |
| 872 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 873 | if (head + event->header.size >= page_size * mmap_window) { |
| 874 | unsigned long shift = page_size * (head / page_size); |
| 875 | int ret; |
| 876 | |
| 877 | ret = munmap(buf, page_size * mmap_window); |
| 878 | assert(ret == 0); |
| 879 | |
| 880 | offset += shift; |
| 881 | head -= shift; |
| 882 | goto remap; |
| 883 | } |
| 884 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 885 | size = event->header.size; |
| 886 | if (!size) |
| 887 | goto broken_event; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 888 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 889 | if (event->header.misc & PERF_EVENT_MISC_OVERFLOW) { |
| 890 | char level; |
| 891 | int show = 0; |
| 892 | struct dso *dso = NULL; |
| 893 | struct thread *thread = threads__findnew(event->ip.pid); |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 894 | uint64_t ip = event->ip.ip; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 895 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 896 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 897 | fprintf(stderr, "%p [%p]: PERF_EVENT (IP, %d): %d: %p\n", |
| 898 | (void *)(offset + head), |
| 899 | (void *)(long)(event->header.size), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 900 | event->header.misc, |
| 901 | event->ip.pid, |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 902 | (void *)(long)ip); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 903 | } |
| 904 | |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 905 | if (thread == NULL) { |
| 906 | fprintf(stderr, "problem processing %d event, bailing out\n", |
| 907 | event->header.type); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 908 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 909 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 910 | |
| 911 | if (event->header.misc & PERF_EVENT_MISC_KERNEL) { |
| 912 | show = SHOW_KERNEL; |
| 913 | level = 'k'; |
| 914 | dso = kernel_dso; |
| 915 | } else if (event->header.misc & PERF_EVENT_MISC_USER) { |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 916 | struct map *map; |
| 917 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 918 | show = SHOW_USER; |
| 919 | level = '.'; |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 920 | |
| 921 | map = thread__find_map(thread, ip); |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 922 | if (map != NULL) { |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 923 | dso = map->dso; |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 924 | ip -= map->start + map->pgoff; |
| 925 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 926 | } else { |
| 927 | show = SHOW_HV; |
| 928 | level = 'H'; |
| 929 | } |
| 930 | |
| 931 | if (show & show_mask) { |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 932 | struct symbol *sym = dso__find_symbol(dso, ip); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 933 | |
Peter Zijlstra | f17e04a | 2009-05-26 15:30:22 +0200 | [diff] [blame] | 934 | if (thread__symbol_incnew(thread, sym, ip, dso, level)) { |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 935 | fprintf(stderr, "problem incrementing symbol count, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 936 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 937 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 938 | } |
| 939 | total++; |
| 940 | } else switch (event->header.type) { |
| 941 | case PERF_EVENT_MMAP: { |
| 942 | struct thread *thread = threads__findnew(event->mmap.pid); |
| 943 | struct map *map = map__new(&event->mmap); |
| 944 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 945 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 946 | fprintf(stderr, "%p [%p]: PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n", |
| 947 | (void *)(offset + head), |
| 948 | (void *)(long)(event->header.size), |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 949 | (void *)(long)event->mmap.start, |
| 950 | (void *)(long)event->mmap.len, |
| 951 | (void *)(long)event->mmap.pgoff, |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 952 | event->mmap.filename); |
| 953 | } |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 954 | if (thread == NULL || map == NULL) { |
| 955 | fprintf(stderr, "problem processing PERF_EVENT_MMAP, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 956 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 957 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 958 | thread__insert_map(thread, map); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 959 | total_mmap++; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 960 | break; |
| 961 | } |
| 962 | case PERF_EVENT_COMM: { |
| 963 | struct thread *thread = threads__findnew(event->comm.pid); |
| 964 | |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 965 | if (dump_trace) { |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 966 | fprintf(stderr, "%p [%p]: PERF_EVENT_COMM: %s:%d\n", |
| 967 | (void *)(offset + head), |
| 968 | (void *)(long)(event->header.size), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 969 | event->comm.comm, event->comm.pid); |
| 970 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 971 | if (thread == NULL || |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 972 | thread__set_comm(thread, event->comm.comm)) { |
| 973 | fprintf(stderr, "problem processing PERF_EVENT_COMM, bailing out\n"); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 974 | goto done; |
Arnaldo Carvalho de Melo | ce7e436 | 2009-05-19 09:30:23 -0300 | [diff] [blame] | 975 | } |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 976 | total_comm++; |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 977 | break; |
| 978 | } |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 979 | default: { |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 980 | broken_event: |
Peter Zijlstra | b7a16ea | 2009-05-27 13:35:35 +0200 | [diff] [blame^] | 981 | if (dump_trace) |
| 982 | fprintf(stderr, "%p [%p]: skipping unknown header type: %d\n", |
| 983 | (void *)(offset + head), |
| 984 | (void *)(long)(event->header.size), |
| 985 | event->header.type); |
| 986 | |
Ingo Molnar | 3e70611 | 2009-05-26 18:53:17 +0200 | [diff] [blame] | 987 | total_unknown++; |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 988 | |
| 989 | /* |
| 990 | * assume we lost track of the stream, check alignment, and |
| 991 | * increment a single u64 in the hope to catch on again 'soon'. |
| 992 | */ |
| 993 | |
| 994 | if (unlikely(head & 7)) |
| 995 | head &= ~7ULL; |
| 996 | |
| 997 | size = 8; |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 998 | } |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 999 | } |
| 1000 | |
Peter Zijlstra | 6142f9e | 2009-05-26 20:51:47 +0200 | [diff] [blame] | 1001 | head += size; |
Ingo Molnar | f49515b | 2009-05-26 19:03:36 +0200 | [diff] [blame] | 1002 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 1003 | if (offset + head < stat.st_size) |
| 1004 | goto more; |
| 1005 | |
| 1006 | rc = EXIT_SUCCESS; |
| 1007 | done: |
| 1008 | close(input); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 1009 | |
| 1010 | if (dump_trace) { |
Ingo Molnar | 3e70611 | 2009-05-26 18:53:17 +0200 | [diff] [blame] | 1011 | fprintf(stderr, " IP events: %10ld\n", total); |
| 1012 | fprintf(stderr, " mmap events: %10ld\n", total_mmap); |
| 1013 | fprintf(stderr, " comm events: %10ld\n", total_comm); |
| 1014 | fprintf(stderr, " unknown events: %10ld\n", total_unknown); |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 1015 | |
| 1016 | return 0; |
| 1017 | } |
| 1018 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 1019 | if (verbose >= 2) { |
| 1020 | dsos__fprintf(stdout); |
| 1021 | threads__fprintf(stdout); |
| 1022 | } |
| 1023 | |
Arnaldo Carvalho de Melo | 3a4b8cc | 2009-05-26 16:19:04 -0300 | [diff] [blame] | 1024 | threads__sort_symhists(); |
| 1025 | threads__symhists_fprintf(total, stdout); |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 1026 | |
Arnaldo Carvalho de Melo | 8fa66bd | 2009-05-18 12:45:42 -0300 | [diff] [blame] | 1027 | return rc; |
| 1028 | } |
| 1029 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1030 | static const char * const report_usage[] = { |
| 1031 | "perf report [<options>] <command>", |
| 1032 | NULL |
| 1033 | }; |
| 1034 | |
| 1035 | static const struct option options[] = { |
| 1036 | OPT_STRING('i', "input", &input_name, "file", |
| 1037 | "input file name"), |
Arnaldo Carvalho de Melo | 815e777 | 2009-05-26 19:46:14 -0300 | [diff] [blame] | 1038 | OPT_BOOLEAN('v', "verbose", &verbose, |
| 1039 | "be more verbose (show symbol address, etc)"), |
Ingo Molnar | 97b07b6 | 2009-05-26 18:48:58 +0200 | [diff] [blame] | 1040 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| 1041 | "dump raw trace in ASCII"), |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1042 | OPT_END() |
| 1043 | }; |
| 1044 | |
| 1045 | int cmd_report(int argc, const char **argv, const char *prefix) |
| 1046 | { |
| 1047 | elf_version(EV_CURRENT); |
| 1048 | |
| 1049 | page_size = getpagesize(); |
| 1050 | |
| 1051 | parse_options(argc, argv, options, report_usage, 0); |
| 1052 | |
Ingo Molnar | a930d2c | 2009-05-27 09:50:13 +0200 | [diff] [blame] | 1053 | setup_pager(); |
| 1054 | |
Ingo Molnar | 53cb8bc | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1055 | return __cmd_report(); |
| 1056 | } |