Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1 | #include <dirent.h> |
| 2 | #include <errno.h> |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 3 | #include <stdlib.h> |
| 4 | #include <stdio.h> |
| 5 | #include <string.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/stat.h> |
| 8 | #include <sys/param.h> |
| 9 | #include <fcntl.h> |
| 10 | #include <unistd.h> |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 11 | #include <inttypes.h> |
Arnaldo Carvalho de Melo | b36f19d | 2010-05-20 12:15:33 -0300 | [diff] [blame] | 12 | #include "build-id.h" |
Namhyung Kim | e334c72 | 2012-02-10 10:10:17 +0900 | [diff] [blame] | 13 | #include "util.h" |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 14 | #include "debug.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 15 | #include "symbol.h" |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 16 | #include "strlist.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 17 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 18 | #include <elf.h> |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 19 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 20 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 21 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 22 | #ifndef KSYM_NAME_LEN |
Ricardo Ribalda Delgado | c752d04 | 2011-10-20 09:43:26 +0200 | [diff] [blame] | 23 | #define KSYM_NAME_LEN 256 |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 24 | #endif |
| 25 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 26 | static int dso__load_kernel_sym(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 27 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 28 | static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 29 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 30 | static int vmlinux_path__nr_entries; |
| 31 | static char **vmlinux_path; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 32 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 33 | struct symbol_conf symbol_conf = { |
Arnaldo Carvalho de Melo | d599db3 | 2009-12-15 20:04:42 -0200 | [diff] [blame] | 34 | .exclude_other = true, |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 35 | .use_modules = true, |
| 36 | .try_vmlinux_path = true, |
Stephane Eranian | 3e6a2a7 | 2011-05-17 17:32:07 +0200 | [diff] [blame] | 37 | .annotate_src = true, |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 38 | .symfs = "", |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 39 | }; |
| 40 | |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 41 | static enum dso_binary_type binary_type_symtab[] = { |
| 42 | DSO_BINARY_TYPE__KALLSYMS, |
| 43 | DSO_BINARY_TYPE__GUEST_KALLSYMS, |
| 44 | DSO_BINARY_TYPE__JAVA_JIT, |
| 45 | DSO_BINARY_TYPE__DEBUGLINK, |
| 46 | DSO_BINARY_TYPE__BUILD_ID_CACHE, |
| 47 | DSO_BINARY_TYPE__FEDORA_DEBUGINFO, |
| 48 | DSO_BINARY_TYPE__UBUNTU_DEBUGINFO, |
| 49 | DSO_BINARY_TYPE__BUILDID_DEBUGINFO, |
| 50 | DSO_BINARY_TYPE__SYSTEM_PATH_DSO, |
| 51 | DSO_BINARY_TYPE__GUEST_KMODULE, |
| 52 | DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE, |
| 53 | DSO_BINARY_TYPE__NOT_FOUND, |
| 54 | }; |
| 55 | |
Jiri Olsa | 028df76 | 2012-08-01 14:47:57 +0200 | [diff] [blame] | 56 | #define DSO_BINARY_TYPE__SYMTAB_CNT ARRAY_SIZE(binary_type_symtab) |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 57 | |
Arnaldo Carvalho de Melo | 36a3e64 | 2010-01-04 16:19:27 -0200 | [diff] [blame] | 58 | bool symbol_type__is_a(char symbol_type, enum map_type map_type) |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 59 | { |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 60 | symbol_type = toupper(symbol_type); |
| 61 | |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 62 | switch (map_type) { |
| 63 | case MAP__FUNCTION: |
| 64 | return symbol_type == 'T' || symbol_type == 'W'; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 65 | case MAP__VARIABLE: |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 66 | return symbol_type == 'D'; |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 67 | default: |
| 68 | return false; |
| 69 | } |
| 70 | } |
| 71 | |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 72 | static int prefix_underscores_count(const char *str) |
| 73 | { |
| 74 | const char *tail = str; |
| 75 | |
| 76 | while (*tail == '_') |
| 77 | tail++; |
| 78 | |
| 79 | return tail - str; |
| 80 | } |
| 81 | |
| 82 | #define SYMBOL_A 0 |
| 83 | #define SYMBOL_B 1 |
| 84 | |
| 85 | static int choose_best_symbol(struct symbol *syma, struct symbol *symb) |
| 86 | { |
| 87 | s64 a; |
| 88 | s64 b; |
| 89 | |
| 90 | /* Prefer a symbol with non zero length */ |
| 91 | a = syma->end - syma->start; |
| 92 | b = symb->end - symb->start; |
| 93 | if ((b == 0) && (a > 0)) |
| 94 | return SYMBOL_A; |
| 95 | else if ((a == 0) && (b > 0)) |
| 96 | return SYMBOL_B; |
| 97 | |
| 98 | /* Prefer a non weak symbol over a weak one */ |
| 99 | a = syma->binding == STB_WEAK; |
| 100 | b = symb->binding == STB_WEAK; |
| 101 | if (b && !a) |
| 102 | return SYMBOL_A; |
| 103 | if (a && !b) |
| 104 | return SYMBOL_B; |
| 105 | |
| 106 | /* Prefer a global symbol over a non global one */ |
| 107 | a = syma->binding == STB_GLOBAL; |
| 108 | b = symb->binding == STB_GLOBAL; |
| 109 | if (a && !b) |
| 110 | return SYMBOL_A; |
| 111 | if (b && !a) |
| 112 | return SYMBOL_B; |
| 113 | |
| 114 | /* Prefer a symbol with less underscores */ |
| 115 | a = prefix_underscores_count(syma->name); |
| 116 | b = prefix_underscores_count(symb->name); |
| 117 | if (b > a) |
| 118 | return SYMBOL_A; |
| 119 | else if (a > b) |
| 120 | return SYMBOL_B; |
| 121 | |
| 122 | /* If all else fails, choose the symbol with the longest name */ |
| 123 | if (strlen(syma->name) >= strlen(symb->name)) |
| 124 | return SYMBOL_A; |
| 125 | else |
| 126 | return SYMBOL_B; |
| 127 | } |
| 128 | |
Namhyung Kim | e5a1845 | 2012-08-06 13:41:20 +0900 | [diff] [blame] | 129 | void symbols__fixup_duplicate(struct rb_root *symbols) |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 130 | { |
| 131 | struct rb_node *nd; |
| 132 | struct symbol *curr, *next; |
| 133 | |
| 134 | nd = rb_first(symbols); |
| 135 | |
| 136 | while (nd) { |
| 137 | curr = rb_entry(nd, struct symbol, rb_node); |
| 138 | again: |
| 139 | nd = rb_next(&curr->rb_node); |
| 140 | next = rb_entry(nd, struct symbol, rb_node); |
| 141 | |
| 142 | if (!nd) |
| 143 | break; |
| 144 | |
| 145 | if (curr->start != next->start) |
| 146 | continue; |
| 147 | |
| 148 | if (choose_best_symbol(curr, next) == SYMBOL_A) { |
| 149 | rb_erase(&next->rb_node, symbols); |
| 150 | goto again; |
| 151 | } else { |
| 152 | nd = rb_next(&curr->rb_node); |
| 153 | rb_erase(&curr->rb_node, symbols); |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | |
Namhyung Kim | e5a1845 | 2012-08-06 13:41:20 +0900 | [diff] [blame] | 158 | void symbols__fixup_end(struct rb_root *symbols) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 159 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 160 | struct rb_node *nd, *prevnd = rb_first(symbols); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 161 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 162 | |
| 163 | if (prevnd == NULL) |
| 164 | return; |
| 165 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 166 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 167 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 168 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 169 | prev = curr; |
| 170 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 171 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 172 | if (prev->end == prev->start && prev->end != curr->start) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 173 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 174 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 175 | |
| 176 | /* Last entry */ |
| 177 | if (curr->end == curr->start) |
| 178 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 179 | } |
| 180 | |
Namhyung Kim | e5a1845 | 2012-08-06 13:41:20 +0900 | [diff] [blame] | 181 | void __map_groups__fixup_end(struct map_groups *mg, enum map_type type) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 182 | { |
| 183 | struct map *prev, *curr; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 184 | struct rb_node *nd, *prevnd = rb_first(&mg->maps[type]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 185 | |
| 186 | if (prevnd == NULL) |
| 187 | return; |
| 188 | |
| 189 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 190 | |
| 191 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 192 | prev = curr; |
| 193 | curr = rb_entry(nd, struct map, rb_node); |
| 194 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 195 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 196 | |
| 197 | /* |
| 198 | * We still haven't the actual symbols, so guess the |
| 199 | * last map final address. |
| 200 | */ |
Ian Munsie | 9d1faba | 2010-11-25 15:12:53 +1100 | [diff] [blame] | 201 | curr->end = ~0ULL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 202 | } |
| 203 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 204 | static void map_groups__fixup_end(struct map_groups *mg) |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 205 | { |
| 206 | int i; |
| 207 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 208 | __map_groups__fixup_end(mg, i); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 209 | } |
| 210 | |
Namhyung Kim | e5a1845 | 2012-08-06 13:41:20 +0900 | [diff] [blame] | 211 | struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 212 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 213 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 214 | struct symbol *sym = calloc(1, (symbol_conf.priv_size + |
| 215 | sizeof(*sym) + namelen)); |
| 216 | if (sym == NULL) |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 217 | return NULL; |
| 218 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 219 | if (symbol_conf.priv_size) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 220 | sym = ((void *)sym) + symbol_conf.priv_size; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 221 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 222 | sym->start = start; |
| 223 | sym->end = len ? start + len - 1 : start; |
| 224 | sym->binding = binding; |
| 225 | sym->namelen = namelen - 1; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 226 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 227 | pr_debug4("%s: %s %#" PRIx64 "-%#" PRIx64 "\n", |
| 228 | __func__, name, start, sym->end); |
| 229 | memcpy(sym->name, name, namelen); |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 230 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 231 | return sym; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 232 | } |
| 233 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 234 | void symbol__delete(struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 235 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 236 | free(((void *)sym) - symbol_conf.priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 237 | } |
| 238 | |
Jiri Olsa | cdd059d | 2012-10-27 23:18:32 +0200 | [diff] [blame] | 239 | size_t symbol__fprintf(struct symbol *sym, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 240 | { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 241 | return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %c %s\n", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 242 | sym->start, sym->end, |
| 243 | sym->binding == STB_GLOBAL ? 'g' : |
| 244 | sym->binding == STB_LOCAL ? 'l' : 'w', |
| 245 | sym->name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 246 | } |
| 247 | |
Akihiro Nagai | a978f2a | 2012-01-30 13:43:15 +0900 | [diff] [blame] | 248 | size_t symbol__fprintf_symname_offs(const struct symbol *sym, |
| 249 | const struct addr_location *al, FILE *fp) |
| 250 | { |
| 251 | unsigned long offset; |
| 252 | size_t length; |
| 253 | |
| 254 | if (sym && sym->name) { |
| 255 | length = fprintf(fp, "%s", sym->name); |
| 256 | if (al) { |
| 257 | offset = al->addr - sym->start; |
| 258 | length += fprintf(fp, "+0x%lx", offset); |
| 259 | } |
| 260 | return length; |
| 261 | } else |
| 262 | return fprintf(fp, "[unknown]"); |
| 263 | } |
| 264 | |
Akihiro Nagai | 547a92e | 2012-01-30 13:42:57 +0900 | [diff] [blame] | 265 | size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp) |
| 266 | { |
Akihiro Nagai | a978f2a | 2012-01-30 13:43:15 +0900 | [diff] [blame] | 267 | return symbol__fprintf_symname_offs(sym, NULL, fp); |
Akihiro Nagai | 547a92e | 2012-01-30 13:42:57 +0900 | [diff] [blame] | 268 | } |
| 269 | |
Jiri Olsa | cdd059d | 2012-10-27 23:18:32 +0200 | [diff] [blame] | 270 | void symbols__delete(struct rb_root *symbols) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 271 | { |
| 272 | struct symbol *pos; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 273 | struct rb_node *next = rb_first(symbols); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 274 | |
| 275 | while (next) { |
| 276 | pos = rb_entry(next, struct symbol, rb_node); |
| 277 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 278 | rb_erase(&pos->rb_node, symbols); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 279 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 280 | } |
| 281 | } |
| 282 | |
Namhyung Kim | e5a1845 | 2012-08-06 13:41:20 +0900 | [diff] [blame] | 283 | void symbols__insert(struct rb_root *symbols, struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 284 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 285 | struct rb_node **p = &symbols->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 286 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 287 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 288 | struct symbol *s; |
| 289 | |
| 290 | while (*p != NULL) { |
| 291 | parent = *p; |
| 292 | s = rb_entry(parent, struct symbol, rb_node); |
| 293 | if (ip < s->start) |
| 294 | p = &(*p)->rb_left; |
| 295 | else |
| 296 | p = &(*p)->rb_right; |
| 297 | } |
| 298 | rb_link_node(&sym->rb_node, parent, p); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 299 | rb_insert_color(&sym->rb_node, symbols); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 300 | } |
| 301 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 302 | static struct symbol *symbols__find(struct rb_root *symbols, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 303 | { |
| 304 | struct rb_node *n; |
| 305 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 306 | if (symbols == NULL) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 307 | return NULL; |
| 308 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 309 | n = symbols->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 310 | |
| 311 | while (n) { |
| 312 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 313 | |
| 314 | if (ip < s->start) |
| 315 | n = n->rb_left; |
| 316 | else if (ip > s->end) |
| 317 | n = n->rb_right; |
| 318 | else |
| 319 | return s; |
| 320 | } |
| 321 | |
| 322 | return NULL; |
| 323 | } |
| 324 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 325 | struct symbol_name_rb_node { |
| 326 | struct rb_node rb_node; |
| 327 | struct symbol sym; |
| 328 | }; |
| 329 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 330 | static void symbols__insert_by_name(struct rb_root *symbols, struct symbol *sym) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 331 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 332 | struct rb_node **p = &symbols->rb_node; |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 333 | struct rb_node *parent = NULL; |
Rabin Vincent | 02a9d03 | 2010-11-23 22:08:18 +0530 | [diff] [blame] | 334 | struct symbol_name_rb_node *symn, *s; |
| 335 | |
| 336 | symn = container_of(sym, struct symbol_name_rb_node, sym); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 337 | |
| 338 | while (*p != NULL) { |
| 339 | parent = *p; |
| 340 | s = rb_entry(parent, struct symbol_name_rb_node, rb_node); |
| 341 | if (strcmp(sym->name, s->sym.name) < 0) |
| 342 | p = &(*p)->rb_left; |
| 343 | else |
| 344 | p = &(*p)->rb_right; |
| 345 | } |
| 346 | rb_link_node(&symn->rb_node, parent, p); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 347 | rb_insert_color(&symn->rb_node, symbols); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 348 | } |
| 349 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 350 | static void symbols__sort_by_name(struct rb_root *symbols, |
| 351 | struct rb_root *source) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 352 | { |
| 353 | struct rb_node *nd; |
| 354 | |
| 355 | for (nd = rb_first(source); nd; nd = rb_next(nd)) { |
| 356 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 357 | symbols__insert_by_name(symbols, pos); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 358 | } |
| 359 | } |
| 360 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 361 | static struct symbol *symbols__find_by_name(struct rb_root *symbols, |
| 362 | const char *name) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 363 | { |
| 364 | struct rb_node *n; |
| 365 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 366 | if (symbols == NULL) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 367 | return NULL; |
| 368 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 369 | n = symbols->rb_node; |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 370 | |
| 371 | while (n) { |
| 372 | struct symbol_name_rb_node *s; |
| 373 | int cmp; |
| 374 | |
| 375 | s = rb_entry(n, struct symbol_name_rb_node, rb_node); |
| 376 | cmp = strcmp(name, s->sym.name); |
| 377 | |
| 378 | if (cmp < 0) |
| 379 | n = n->rb_left; |
| 380 | else if (cmp > 0) |
| 381 | n = n->rb_right; |
| 382 | else |
| 383 | return &s->sym; |
| 384 | } |
| 385 | |
| 386 | return NULL; |
| 387 | } |
| 388 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 389 | struct symbol *dso__find_symbol(struct dso *dso, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 390 | enum map_type type, u64 addr) |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 391 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 392 | return symbols__find(&dso->symbols[type], addr); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 393 | } |
| 394 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 395 | struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 396 | const char *name) |
| 397 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 398 | return symbols__find_by_name(&dso->symbol_names[type], name); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 399 | } |
| 400 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 401 | void dso__sort_by_name(struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 402 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 403 | dso__set_sorted_by_name(dso, type); |
| 404 | return symbols__sort_by_name(&dso->symbol_names[type], |
| 405 | &dso->symbols[type]); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 406 | } |
| 407 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 408 | size_t dso__fprintf_symbols_by_name(struct dso *dso, |
| 409 | enum map_type type, FILE *fp) |
Srikar Dronamraju | 90f18e6 | 2010-08-25 19:13:29 +0530 | [diff] [blame] | 410 | { |
| 411 | size_t ret = 0; |
| 412 | struct rb_node *nd; |
| 413 | struct symbol_name_rb_node *pos; |
| 414 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 415 | for (nd = rb_first(&dso->symbol_names[type]); nd; nd = rb_next(nd)) { |
Srikar Dronamraju | 90f18e6 | 2010-08-25 19:13:29 +0530 | [diff] [blame] | 416 | pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); |
| 417 | fprintf(fp, "%s\n", pos->sym.name); |
| 418 | } |
| 419 | |
| 420 | return ret; |
| 421 | } |
| 422 | |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 423 | int kallsyms__parse(const char *filename, void *arg, |
| 424 | int (*process_symbol)(void *arg, const char *name, |
Cody P Schafer | 8215152 | 2012-08-10 15:22:48 -0700 | [diff] [blame] | 425 | char type, u64 start)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 426 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 427 | char *line = NULL; |
| 428 | size_t n; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 429 | int err = -1; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 430 | FILE *file = fopen(filename, "r"); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 431 | |
| 432 | if (file == NULL) |
| 433 | goto out_failure; |
| 434 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 435 | err = 0; |
| 436 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 437 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 438 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 439 | int line_len, len; |
| 440 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 441 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 442 | |
| 443 | line_len = getline(&line, &n, file); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 444 | if (line_len < 0 || !line) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 445 | break; |
| 446 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 447 | line[--line_len] = '\0'; /* \n */ |
| 448 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 449 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 450 | |
| 451 | len++; |
| 452 | if (len + 2 >= line_len) |
| 453 | continue; |
| 454 | |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 455 | symbol_type = line[len]; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 456 | len += 2; |
| 457 | symbol_name = line + len; |
| 458 | len = line_len - len; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 459 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 460 | if (len >= KSYM_NAME_LEN) { |
| 461 | err = -1; |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 462 | break; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 463 | } |
| 464 | |
Anton Blanchard | 3f5a427 | 2011-08-24 16:40:15 +1000 | [diff] [blame] | 465 | err = process_symbol(arg, symbol_name, |
Cody P Schafer | 8215152 | 2012-08-10 15:22:48 -0700 | [diff] [blame] | 466 | symbol_type, start); |
Anton Blanchard | 3f5a427 | 2011-08-24 16:40:15 +1000 | [diff] [blame] | 467 | if (err) |
| 468 | break; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | free(line); |
| 472 | fclose(file); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 473 | return err; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 474 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 475 | out_failure: |
| 476 | return -1; |
| 477 | } |
| 478 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 479 | struct process_kallsyms_args { |
| 480 | struct map *map; |
| 481 | struct dso *dso; |
| 482 | }; |
| 483 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 484 | static u8 kallsyms2elf_type(char type) |
| 485 | { |
| 486 | if (type == 'W') |
| 487 | return STB_WEAK; |
| 488 | |
| 489 | return isupper(type) ? STB_GLOBAL : STB_LOCAL; |
| 490 | } |
| 491 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 492 | static int map__process_kallsym_symbol(void *arg, const char *name, |
Cody P Schafer | 8215152 | 2012-08-10 15:22:48 -0700 | [diff] [blame] | 493 | char type, u64 start) |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 494 | { |
| 495 | struct symbol *sym; |
| 496 | struct process_kallsyms_args *a = arg; |
| 497 | struct rb_root *root = &a->dso->symbols[a->map->type]; |
| 498 | |
| 499 | if (!symbol_type__is_a(type, a->map->type)) |
| 500 | return 0; |
| 501 | |
Cody P Schafer | 8215152 | 2012-08-10 15:22:48 -0700 | [diff] [blame] | 502 | /* |
| 503 | * module symbols are not sorted so we add all |
| 504 | * symbols, setting length to 0, and rely on |
| 505 | * symbols__fixup_end() to fix it up. |
| 506 | */ |
| 507 | sym = symbol__new(start, 0, kallsyms2elf_type(type), name); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 508 | if (sym == NULL) |
| 509 | return -ENOMEM; |
| 510 | /* |
| 511 | * We will pass the symbols to the filter later, in |
| 512 | * map__split_kallsyms, when we have split the maps per module |
| 513 | */ |
| 514 | symbols__insert(root, sym); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 515 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 521 | * so that we can in the next step set the symbol ->end address and then |
| 522 | * call kernel_maps__split_kallsyms. |
| 523 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 524 | static int dso__load_all_kallsyms(struct dso *dso, const char *filename, |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 525 | struct map *map) |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 526 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 527 | struct process_kallsyms_args args = { .map = map, .dso = dso, }; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 528 | return kallsyms__parse(filename, &args, map__process_kallsym_symbol); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 529 | } |
| 530 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 531 | /* |
| 532 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 533 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 534 | * the original ELF section names vmlinux have. |
| 535 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 536 | static int dso__split_kallsyms(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 537 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 538 | { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 539 | struct map_groups *kmaps = map__kmap(map)->kmaps; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 540 | struct machine *machine = kmaps->machine; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 541 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 542 | struct symbol *pos; |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 543 | int count = 0, moved = 0; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 544 | struct rb_root *root = &dso->symbols[map->type]; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 545 | struct rb_node *next = rb_first(root); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 546 | int kernel_range = 0; |
| 547 | |
| 548 | while (next) { |
| 549 | char *module; |
| 550 | |
| 551 | pos = rb_entry(next, struct symbol, rb_node); |
| 552 | next = rb_next(&pos->rb_node); |
| 553 | |
| 554 | module = strchr(pos->name, '\t'); |
| 555 | if (module) { |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 556 | if (!symbol_conf.use_modules) |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 557 | goto discard_symbol; |
| 558 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 559 | *module++ = '\0'; |
| 560 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 561 | if (strcmp(curr_map->dso->short_name, module)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 562 | if (curr_map != map && |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 563 | dso->kernel == DSO_TYPE_GUEST_KERNEL && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 564 | machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 565 | /* |
| 566 | * We assume all symbols of a module are |
| 567 | * continuous in * kallsyms, so curr_map |
| 568 | * points to a module and all its |
| 569 | * symbols are in its kmap. Mark it as |
| 570 | * loaded. |
| 571 | */ |
| 572 | dso__set_loaded(curr_map->dso, |
| 573 | curr_map->type); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 574 | } |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 575 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 576 | curr_map = map_groups__find_by_name(kmaps, |
| 577 | map->type, module); |
| 578 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 2f51903 | 2010-05-17 17:57:59 -0300 | [diff] [blame] | 579 | pr_debug("%s/proc/{kallsyms,modules} " |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 580 | "inconsistency while looking " |
| 581 | "for \"%s\" module!\n", |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 582 | machine->root_dir, module); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 583 | curr_map = map; |
| 584 | goto discard_symbol; |
| 585 | } |
| 586 | |
| 587 | if (curr_map->dso->loaded && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 588 | !machine__is_default_guest(machine)) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 589 | goto discard_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 590 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 591 | /* |
| 592 | * So that we look just like we get from .ko files, |
| 593 | * i.e. not prelinked, relative to map->start. |
| 594 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 595 | pos->start = curr_map->map_ip(curr_map, pos->start); |
| 596 | pos->end = curr_map->map_ip(curr_map, pos->end); |
| 597 | } else if (curr_map != map) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 598 | char dso_name[PATH_MAX]; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 599 | struct dso *ndso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 600 | |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 601 | if (count == 0) { |
| 602 | curr_map = map; |
| 603 | goto filter_symbol; |
| 604 | } |
| 605 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 606 | if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 607 | snprintf(dso_name, sizeof(dso_name), |
| 608 | "[guest.kernel].%d", |
| 609 | kernel_range++); |
| 610 | else |
| 611 | snprintf(dso_name, sizeof(dso_name), |
| 612 | "[kernel].%d", |
| 613 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 614 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 615 | ndso = dso__new(dso_name); |
| 616 | if (ndso == NULL) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 617 | return -1; |
| 618 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 619 | ndso->kernel = dso->kernel; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 620 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 621 | curr_map = map__new2(pos->start, ndso, map->type); |
Zhang, Yanmin | 37fe5fc | 2010-02-25 11:00:51 +0800 | [diff] [blame] | 622 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 623 | dso__delete(ndso); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 624 | return -1; |
| 625 | } |
| 626 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 627 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 628 | map_groups__insert(kmaps, curr_map); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 629 | ++kernel_range; |
| 630 | } |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 631 | filter_symbol: |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 632 | if (filter && filter(curr_map, pos)) { |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 633 | discard_symbol: rb_erase(&pos->rb_node, root); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 634 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 635 | } else { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 636 | if (curr_map != map) { |
| 637 | rb_erase(&pos->rb_node, root); |
| 638 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 639 | ++moved; |
| 640 | } else |
| 641 | ++count; |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 642 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 643 | } |
| 644 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 645 | if (curr_map != map && |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 646 | dso->kernel == DSO_TYPE_GUEST_KERNEL && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 647 | machine__is_default_guest(kmaps->machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 648 | dso__set_loaded(curr_map->dso, curr_map->type); |
| 649 | } |
| 650 | |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 651 | return count + moved; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 652 | } |
| 653 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 654 | static bool symbol__restricted_filename(const char *filename, |
| 655 | const char *restricted_filename) |
| 656 | { |
| 657 | bool restricted = false; |
| 658 | |
| 659 | if (symbol_conf.kptr_restrict) { |
| 660 | char *r = realpath(filename, NULL); |
| 661 | |
| 662 | if (r != NULL) { |
| 663 | restricted = strcmp(r, restricted_filename) == 0; |
| 664 | free(r); |
| 665 | return restricted; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | return restricted; |
| 670 | } |
| 671 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 672 | int dso__load_kallsyms(struct dso *dso, const char *filename, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 673 | struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 674 | { |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 675 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) |
| 676 | return -1; |
| 677 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 678 | if (dso__load_all_kallsyms(dso, filename, map) < 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 679 | return -1; |
| 680 | |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 681 | symbols__fixup_duplicate(&dso->symbols[map->type]); |
Anton Blanchard | 3f5a427 | 2011-08-24 16:40:15 +1000 | [diff] [blame] | 682 | symbols__fixup_end(&dso->symbols[map->type]); |
| 683 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 684 | if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 685 | dso->symtab_type = DSO_BINARY_TYPE__GUEST_KALLSYMS; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 686 | else |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 687 | dso->symtab_type = DSO_BINARY_TYPE__KALLSYMS; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 688 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 689 | return dso__split_kallsyms(dso, map, filter); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 690 | } |
| 691 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 692 | static int dso__load_perf_map(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 693 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 694 | { |
| 695 | char *line = NULL; |
| 696 | size_t n; |
| 697 | FILE *file; |
| 698 | int nr_syms = 0; |
| 699 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 700 | file = fopen(dso->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 701 | if (file == NULL) |
| 702 | goto out_failure; |
| 703 | |
| 704 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 705 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 706 | struct symbol *sym; |
| 707 | int line_len, len; |
| 708 | |
| 709 | line_len = getline(&line, &n, file); |
| 710 | if (line_len < 0) |
| 711 | break; |
| 712 | |
| 713 | if (!line) |
| 714 | goto out_failure; |
| 715 | |
| 716 | line[--line_len] = '\0'; /* \n */ |
| 717 | |
| 718 | len = hex2u64(line, &start); |
| 719 | |
| 720 | len++; |
| 721 | if (len + 2 >= line_len) |
| 722 | continue; |
| 723 | |
| 724 | len += hex2u64(line + len, &size); |
| 725 | |
| 726 | len++; |
| 727 | if (len + 2 >= line_len) |
| 728 | continue; |
| 729 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 730 | sym = symbol__new(start, size, STB_GLOBAL, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 731 | |
| 732 | if (sym == NULL) |
| 733 | goto out_delete_line; |
| 734 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 735 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 736 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 737 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 738 | symbols__insert(&dso->symbols[map->type], sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 739 | nr_syms++; |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | free(line); |
| 744 | fclose(file); |
| 745 | |
| 746 | return nr_syms; |
| 747 | |
| 748 | out_delete_line: |
| 749 | free(line); |
| 750 | out_failure: |
| 751 | return -1; |
| 752 | } |
| 753 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 754 | int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 755 | { |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 756 | char *name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 757 | int ret = -1; |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 758 | u_int i; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 759 | struct machine *machine; |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 760 | char *root_dir = (char *) ""; |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 761 | int ss_pos = 0; |
| 762 | struct symsrc ss_[2]; |
| 763 | struct symsrc *syms_ss = NULL, *runtime_ss = NULL; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 764 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 765 | dso__set_loaded(dso, map->type); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 766 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 767 | if (dso->kernel == DSO_TYPE_KERNEL) |
| 768 | return dso__load_kernel_sym(dso, map, filter); |
| 769 | else if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
| 770 | return dso__load_guest_kernel_sym(dso, map, filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 771 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 772 | if (map->groups && map->groups->machine) |
| 773 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 774 | else |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 775 | machine = NULL; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 776 | |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 777 | name = malloc(PATH_MAX); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 778 | if (!name) |
| 779 | return -1; |
| 780 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 781 | dso->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 782 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 783 | if (strncmp(dso->name, "/tmp/perf-", 10) == 0) { |
Pekka Enberg | 981c125 | 2011-08-09 22:54:18 +0300 | [diff] [blame] | 784 | struct stat st; |
| 785 | |
Vasiliy Kulikov | e9b52ef | 2011-08-12 00:55:37 +0400 | [diff] [blame] | 786 | if (lstat(dso->name, &st) < 0) |
Pekka Enberg | 981c125 | 2011-08-09 22:54:18 +0300 | [diff] [blame] | 787 | return -1; |
| 788 | |
| 789 | if (st.st_uid && (st.st_uid != geteuid())) { |
| 790 | pr_warning("File %s not owned by current user or root, " |
| 791 | "ignoring it.\n", dso->name); |
| 792 | return -1; |
| 793 | } |
| 794 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 795 | ret = dso__load_perf_map(dso, map, filter); |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 796 | dso->symtab_type = ret > 0 ? DSO_BINARY_TYPE__JAVA_JIT : |
| 797 | DSO_BINARY_TYPE__NOT_FOUND; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 798 | return ret; |
| 799 | } |
| 800 | |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 801 | if (machine) |
| 802 | root_dir = machine->root_dir; |
| 803 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 804 | /* Iterate over candidate debug images. |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 805 | * Keep track of "interesting" ones (those which have a symtab, dynsym, |
| 806 | * and/or opd section) for processing. |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 807 | */ |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 808 | for (i = 0; i < DSO_BINARY_TYPE__SYMTAB_CNT; i++) { |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 809 | struct symsrc *ss = &ss_[ss_pos]; |
| 810 | bool next_slot = false; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 811 | |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 812 | enum dso_binary_type symtab_type = binary_type_symtab[i]; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 813 | |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 814 | if (dso__binary_type_file(dso, symtab_type, |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 815 | root_dir, name, PATH_MAX)) |
| 816 | continue; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 817 | |
| 818 | /* Name is now the name of the next image to try */ |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 819 | if (symsrc__init(ss, dso, name, symtab_type) < 0) |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 820 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 821 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 822 | if (!syms_ss && symsrc__has_symtab(ss)) { |
| 823 | syms_ss = ss; |
| 824 | next_slot = true; |
Cody P Schafer | d26cd12 | 2012-08-10 15:23:00 -0700 | [diff] [blame] | 825 | } |
| 826 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 827 | if (!runtime_ss && symsrc__possibly_runtime(ss)) { |
| 828 | runtime_ss = ss; |
| 829 | next_slot = true; |
Cody P Schafer | a44f605 | 2012-08-10 15:22:59 -0700 | [diff] [blame] | 830 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 831 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 832 | if (next_slot) { |
| 833 | ss_pos++; |
Jiri Olsa | 33ff581 | 2012-04-18 15:46:58 +0200 | [diff] [blame] | 834 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 835 | if (syms_ss && runtime_ss) |
| 836 | break; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 837 | } |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 838 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 839 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 840 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 841 | if (!runtime_ss && !syms_ss) |
| 842 | goto out_free; |
| 843 | |
| 844 | if (runtime_ss && !syms_ss) { |
| 845 | syms_ss = runtime_ss; |
Arnaldo Carvalho de Melo | 60e4b10 | 2011-03-22 15:42:14 -0300 | [diff] [blame] | 846 | } |
| 847 | |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 848 | /* We'll have to hope for the best */ |
| 849 | if (!runtime_ss && syms_ss) |
| 850 | runtime_ss = syms_ss; |
| 851 | |
| 852 | if (syms_ss) |
| 853 | ret = dso__load_sym(dso, map, syms_ss, runtime_ss, filter, 0); |
| 854 | else |
| 855 | ret = -1; |
| 856 | |
David Ahern | f47b58b | 2012-08-19 09:47:14 -0600 | [diff] [blame] | 857 | if (ret > 0) { |
Cody P Schafer | 3aafe5a | 2012-08-10 15:23:02 -0700 | [diff] [blame] | 858 | int nr_plt; |
| 859 | |
| 860 | nr_plt = dso__synthesize_plt_symbols(dso, runtime_ss, map, filter); |
| 861 | if (nr_plt > 0) |
| 862 | ret += nr_plt; |
| 863 | } |
| 864 | |
| 865 | for (; ss_pos > 0; ss_pos--) |
| 866 | symsrc__destroy(&ss_[ss_pos - 1]); |
| 867 | out_free: |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 868 | free(name); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 869 | if (ret < 0 && strstr(dso->name, " (deleted)") != NULL) |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 870 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 871 | return ret; |
| 872 | } |
| 873 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 874 | struct map *map_groups__find_by_name(struct map_groups *mg, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 875 | enum map_type type, const char *name) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 876 | { |
| 877 | struct rb_node *nd; |
| 878 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 879 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 880 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 881 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 882 | if (map->dso && strcmp(map->dso->short_name, name) == 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 883 | return map; |
| 884 | } |
| 885 | |
| 886 | return NULL; |
| 887 | } |
| 888 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 889 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 890 | const char *dir_name) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 891 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 892 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 893 | DIR *dir = opendir(dir_name); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 894 | int ret = 0; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 895 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 896 | if (!dir) { |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 897 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 898 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 899 | } |
| 900 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 901 | while ((dent = readdir(dir)) != NULL) { |
| 902 | char path[PATH_MAX]; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 903 | struct stat st; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 904 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 905 | /*sshfs might return bad dent->d_type, so we have to stat*/ |
Namhyung Kim | 2b600f9 | 2011-12-13 00:16:51 +0900 | [diff] [blame] | 906 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 907 | if (stat(path, &st)) |
| 908 | continue; |
| 909 | |
| 910 | if (S_ISDIR(st.st_mode)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 911 | if (!strcmp(dent->d_name, ".") || |
| 912 | !strcmp(dent->d_name, "..")) |
| 913 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 914 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 915 | ret = map_groups__set_modules_path_dir(mg, path); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 916 | if (ret < 0) |
| 917 | goto out; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 918 | } else { |
| 919 | char *dot = strrchr(dent->d_name, '.'), |
| 920 | dso_name[PATH_MAX]; |
| 921 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 922 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 923 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 924 | if (dot == NULL || strcmp(dot, ".ko")) |
| 925 | continue; |
| 926 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 927 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 928 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 929 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 930 | map = map_groups__find_by_name(mg, MAP__FUNCTION, |
| 931 | dso_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 932 | if (map == NULL) |
| 933 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 934 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 935 | long_name = strdup(path); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 936 | if (long_name == NULL) { |
| 937 | ret = -1; |
| 938 | goto out; |
| 939 | } |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 940 | dso__set_long_name(map->dso, long_name); |
Arnaldo Carvalho de Melo | 6e40625 | 2010-07-29 15:11:30 -0300 | [diff] [blame] | 941 | map->dso->lname_alloc = 1; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 942 | dso__kernel_module_get_build_id(map->dso, ""); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 943 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 944 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 945 | |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 946 | out: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 947 | closedir(dir); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 948 | return ret; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 949 | } |
| 950 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 951 | static char *get_kernel_version(const char *root_dir) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 952 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 953 | char version[PATH_MAX]; |
| 954 | FILE *file; |
| 955 | char *name, *tmp; |
| 956 | const char *prefix = "Linux version "; |
| 957 | |
| 958 | sprintf(version, "%s/proc/version", root_dir); |
| 959 | file = fopen(version, "r"); |
| 960 | if (!file) |
| 961 | return NULL; |
| 962 | |
| 963 | version[0] = '\0'; |
| 964 | tmp = fgets(version, sizeof(version), file); |
| 965 | fclose(file); |
| 966 | |
| 967 | name = strstr(version, prefix); |
| 968 | if (!name) |
| 969 | return NULL; |
| 970 | name += strlen(prefix); |
| 971 | tmp = strchr(name, ' '); |
| 972 | if (tmp) |
| 973 | *tmp = '\0'; |
| 974 | |
| 975 | return strdup(name); |
| 976 | } |
| 977 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 978 | static int machine__set_modules_path(struct machine *machine) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 979 | { |
| 980 | char *version; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 981 | char modules_path[PATH_MAX]; |
| 982 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 983 | version = get_kernel_version(machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 984 | if (!version) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 985 | return -1; |
| 986 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 987 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 988 | machine->root_dir, version); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 989 | free(version); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 990 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 991 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 992 | } |
| 993 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 994 | struct map *machine__new_module(struct machine *machine, u64 start, |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 995 | const char *filename) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 996 | { |
| 997 | struct map *map; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 998 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 999 | |
| 1000 | if (dso == NULL) |
| 1001 | return NULL; |
| 1002 | |
| 1003 | map = map__new2(start, dso, MAP__FUNCTION); |
| 1004 | if (map == NULL) |
| 1005 | return NULL; |
| 1006 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1007 | if (machine__is_host(machine)) |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 1008 | dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1009 | else |
Jiri Olsa | 44f24cb | 2012-07-22 14:14:32 +0200 | [diff] [blame] | 1010 | dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1011 | map_groups__insert(&machine->kmaps, map); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1012 | return map; |
| 1013 | } |
| 1014 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1015 | static int machine__create_modules(struct machine *machine) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1016 | { |
| 1017 | char *line = NULL; |
| 1018 | size_t n; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1019 | FILE *file; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1020 | struct map *map; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1021 | const char *modules; |
| 1022 | char path[PATH_MAX]; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1023 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1024 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1025 | modules = symbol_conf.default_guest_modules; |
| 1026 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1027 | sprintf(path, "%s/proc/modules", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1028 | modules = path; |
| 1029 | } |
| 1030 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1031 | if (symbol__restricted_filename(path, "/proc/modules")) |
| 1032 | return -1; |
| 1033 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1034 | file = fopen(modules, "r"); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1035 | if (file == NULL) |
| 1036 | return -1; |
| 1037 | |
| 1038 | while (!feof(file)) { |
| 1039 | char name[PATH_MAX]; |
| 1040 | u64 start; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1041 | char *sep; |
| 1042 | int line_len; |
| 1043 | |
| 1044 | line_len = getline(&line, &n, file); |
| 1045 | if (line_len < 0) |
| 1046 | break; |
| 1047 | |
| 1048 | if (!line) |
| 1049 | goto out_failure; |
| 1050 | |
| 1051 | line[--line_len] = '\0'; /* \n */ |
| 1052 | |
| 1053 | sep = strrchr(line, 'x'); |
| 1054 | if (sep == NULL) |
| 1055 | continue; |
| 1056 | |
| 1057 | hex2u64(sep + 1, &start); |
| 1058 | |
| 1059 | sep = strchr(line, ' '); |
| 1060 | if (sep == NULL) |
| 1061 | continue; |
| 1062 | |
| 1063 | *sep = '\0'; |
| 1064 | |
| 1065 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1066 | map = machine__new_module(machine, start, name); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1067 | if (map == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1068 | goto out_delete_line; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1069 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1070 | } |
| 1071 | |
| 1072 | free(line); |
| 1073 | fclose(file); |
| 1074 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1075 | return machine__set_modules_path(machine); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1076 | |
| 1077 | out_delete_line: |
| 1078 | free(line); |
| 1079 | out_failure: |
| 1080 | return -1; |
| 1081 | } |
| 1082 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1083 | int dso__load_vmlinux(struct dso *dso, struct map *map, |
Franck Bui-Huu | fd930ff | 2010-12-10 14:06:03 +0100 | [diff] [blame] | 1084 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1085 | { |
Cody P Schafer | b68e2f9 | 2012-08-10 15:22:57 -0700 | [diff] [blame] | 1086 | int err = -1; |
| 1087 | struct symsrc ss; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1088 | char symfs_vmlinux[PATH_MAX]; |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 1089 | enum dso_binary_type symtab_type; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1090 | |
Arnaldo Carvalho de Melo | a639dc6 | 2011-02-28 13:54:38 -0300 | [diff] [blame] | 1091 | snprintf(symfs_vmlinux, sizeof(symfs_vmlinux), "%s%s", |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1092 | symbol_conf.symfs, vmlinux); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1093 | |
Cody P Schafer | 21ea453 | 2012-08-10 15:22:56 -0700 | [diff] [blame] | 1094 | if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 1095 | symtab_type = DSO_BINARY_TYPE__GUEST_VMLINUX; |
Cody P Schafer | 21ea453 | 2012-08-10 15:22:56 -0700 | [diff] [blame] | 1096 | else |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 1097 | symtab_type = DSO_BINARY_TYPE__VMLINUX; |
Cody P Schafer | 21ea453 | 2012-08-10 15:22:56 -0700 | [diff] [blame] | 1098 | |
Cody P Schafer | 005f929 | 2012-08-10 15:22:58 -0700 | [diff] [blame] | 1099 | if (symsrc__init(&ss, dso, symfs_vmlinux, symtab_type)) |
Cody P Schafer | b68e2f9 | 2012-08-10 15:22:57 -0700 | [diff] [blame] | 1100 | return -1; |
| 1101 | |
Cody P Schafer | 261360b | 2012-08-10 15:23:01 -0700 | [diff] [blame] | 1102 | err = dso__load_sym(dso, map, &ss, &ss, filter, 0); |
Cody P Schafer | b68e2f9 | 2012-08-10 15:22:57 -0700 | [diff] [blame] | 1103 | symsrc__destroy(&ss); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1104 | |
Cody P Schafer | 515850e | 2012-08-10 15:22:54 -0700 | [diff] [blame] | 1105 | if (err > 0) { |
| 1106 | dso__set_long_name(dso, (char *)vmlinux); |
| 1107 | dso__set_loaded(dso, map->type); |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1108 | pr_debug("Using %s for symbols\n", symfs_vmlinux); |
Cody P Schafer | 515850e | 2012-08-10 15:22:54 -0700 | [diff] [blame] | 1109 | } |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1110 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1111 | return err; |
| 1112 | } |
| 1113 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1114 | int dso__load_vmlinux_path(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1115 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1116 | { |
| 1117 | int i, err = 0; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1118 | char *filename; |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1119 | |
| 1120 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1121 | vmlinux_path__nr_entries + 1); |
| 1122 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1123 | filename = dso__build_id_filename(dso, NULL, 0); |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1124 | if (filename != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1125 | err = dso__load_vmlinux(dso, map, filename, filter); |
Cody P Schafer | 261ee82 | 2012-08-10 15:22:52 -0700 | [diff] [blame] | 1126 | if (err > 0) |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1127 | goto out; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1128 | free(filename); |
| 1129 | } |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1130 | |
| 1131 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1132 | err = dso__load_vmlinux(dso, map, vmlinux_path[i], filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1133 | if (err > 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1134 | dso__set_long_name(dso, strdup(vmlinux_path[i])); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1135 | break; |
| 1136 | } |
| 1137 | } |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1138 | out: |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1139 | return err; |
| 1140 | } |
| 1141 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1142 | static int dso__load_kernel_sym(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1143 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1144 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1145 | int err; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1146 | const char *kallsyms_filename = NULL; |
| 1147 | char *kallsyms_allocated_filename = NULL; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1148 | /* |
David Ahern | b226a5a7 | 2010-12-07 19:39:46 -0700 | [diff] [blame] | 1149 | * Step 1: if the user specified a kallsyms or vmlinux filename, use |
| 1150 | * it and only it, reporting errors to the user if it cannot be used. |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1151 | * |
| 1152 | * For instance, try to analyse an ARM perf.data file _without_ a |
| 1153 | * build-id, or if the user specifies the wrong path to the right |
| 1154 | * vmlinux file, obviously we can't fallback to another vmlinux (a |
| 1155 | * x86_86 one, on the machine where analysis is being performed, say), |
| 1156 | * or worse, /proc/kallsyms. |
| 1157 | * |
| 1158 | * If the specified file _has_ a build-id and there is a build-id |
| 1159 | * section in the perf.data file, we will still do the expected |
| 1160 | * validation in dso__load_vmlinux and will bail out if they don't |
| 1161 | * match. |
| 1162 | */ |
David Ahern | b226a5a7 | 2010-12-07 19:39:46 -0700 | [diff] [blame] | 1163 | if (symbol_conf.kallsyms_name != NULL) { |
| 1164 | kallsyms_filename = symbol_conf.kallsyms_name; |
| 1165 | goto do_kallsyms; |
| 1166 | } |
| 1167 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1168 | if (symbol_conf.vmlinux_name != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1169 | err = dso__load_vmlinux(dso, map, |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1170 | symbol_conf.vmlinux_name, filter); |
Arnaldo Carvalho de Melo | e7dadc0 | 2010-06-03 18:35:55 -0300 | [diff] [blame] | 1171 | if (err > 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1172 | dso__set_long_name(dso, |
Arnaldo Carvalho de Melo | e7dadc0 | 2010-06-03 18:35:55 -0300 | [diff] [blame] | 1173 | strdup(symbol_conf.vmlinux_name)); |
| 1174 | goto out_fixup; |
| 1175 | } |
| 1176 | return err; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1177 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1178 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1179 | if (vmlinux_path != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1180 | err = dso__load_vmlinux_path(dso, map, filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1181 | if (err > 0) |
| 1182 | goto out_fixup; |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1183 | } |
| 1184 | |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1185 | /* do not try local files if a symfs was given */ |
| 1186 | if (symbol_conf.symfs[0] != 0) |
| 1187 | return -1; |
| 1188 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1189 | /* |
| 1190 | * Say the kernel DSO was created when processing the build-id header table, |
| 1191 | * we have a build-id, so check if it is the same as the running kernel, |
| 1192 | * using it if it is. |
| 1193 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1194 | if (dso->has_build_id) { |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1195 | u8 kallsyms_build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1196 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1197 | |
| 1198 | if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id, |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1199 | sizeof(kallsyms_build_id)) == 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1200 | if (dso__build_id_equal(dso, kallsyms_build_id)) { |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1201 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1202 | goto do_kallsyms; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1203 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1204 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1205 | /* |
| 1206 | * Now look if we have it on the build-id cache in |
| 1207 | * $HOME/.debug/[kernel.kallsyms]. |
| 1208 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1209 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1210 | sbuild_id); |
| 1211 | |
| 1212 | if (asprintf(&kallsyms_allocated_filename, |
| 1213 | "%s/.debug/[kernel.kallsyms]/%s", |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1214 | getenv("HOME"), sbuild_id) == -1) { |
| 1215 | pr_err("Not enough memory for kallsyms file lookup\n"); |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1216 | return -1; |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1217 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1218 | |
Arnaldo Carvalho de Melo | 19fc2de | 2010-01-22 14:35:02 -0200 | [diff] [blame] | 1219 | kallsyms_filename = kallsyms_allocated_filename; |
| 1220 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1221 | if (access(kallsyms_filename, F_OK)) { |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1222 | pr_err("No kallsyms or vmlinux with build-id %s " |
| 1223 | "was found\n", sbuild_id); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1224 | free(kallsyms_allocated_filename); |
| 1225 | return -1; |
| 1226 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1227 | } else { |
| 1228 | /* |
| 1229 | * Last resort, if we don't have a build-id and couldn't find |
| 1230 | * any vmlinux file, try the running kernel kallsyms table. |
| 1231 | */ |
| 1232 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1233 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1234 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1235 | do_kallsyms: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1236 | err = dso__load_kallsyms(dso, kallsyms_filename, map, filter); |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1237 | if (err > 0) |
| 1238 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1239 | free(kallsyms_allocated_filename); |
| 1240 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1241 | if (err > 0) { |
Cody P Schafer | 0a0317b | 2012-08-10 15:22:53 -0700 | [diff] [blame] | 1242 | dso__set_long_name(dso, strdup("[kernel.kallsyms]")); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1243 | out_fixup: |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1244 | map__fixup_start(map); |
| 1245 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1246 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1247 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1248 | return err; |
| 1249 | } |
| 1250 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1251 | static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, |
| 1252 | symbol_filter_t filter) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1253 | { |
| 1254 | int err; |
| 1255 | const char *kallsyms_filename = NULL; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1256 | struct machine *machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1257 | char path[PATH_MAX]; |
| 1258 | |
| 1259 | if (!map->groups) { |
| 1260 | pr_debug("Guest kernel map hasn't the point to groups\n"); |
| 1261 | return -1; |
| 1262 | } |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1263 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1264 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1265 | if (machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1266 | /* |
| 1267 | * if the user specified a vmlinux filename, use it and only |
| 1268 | * it, reporting errors to the user if it cannot be used. |
| 1269 | * Or use file guest_kallsyms inputted by user on commandline |
| 1270 | */ |
| 1271 | if (symbol_conf.default_guest_vmlinux_name != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1272 | err = dso__load_vmlinux(dso, map, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1273 | symbol_conf.default_guest_vmlinux_name, filter); |
| 1274 | goto out_try_fixup; |
| 1275 | } |
| 1276 | |
| 1277 | kallsyms_filename = symbol_conf.default_guest_kallsyms; |
| 1278 | if (!kallsyms_filename) |
| 1279 | return -1; |
| 1280 | } else { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1281 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1282 | kallsyms_filename = path; |
| 1283 | } |
| 1284 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1285 | err = dso__load_kallsyms(dso, kallsyms_filename, map, filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1286 | if (err > 0) |
| 1287 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
| 1288 | |
| 1289 | out_try_fixup: |
| 1290 | if (err > 0) { |
| 1291 | if (kallsyms_filename != NULL) { |
Arnaldo Carvalho de Melo | 48ea8f5 | 2010-04-27 21:19:05 -0300 | [diff] [blame] | 1292 | machine__mmap_name(machine, path, sizeof(path)); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1293 | dso__set_long_name(dso, strdup(path)); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1294 | } |
| 1295 | map__fixup_start(map); |
| 1296 | map__fixup_end(map); |
| 1297 | } |
| 1298 | |
| 1299 | return err; |
| 1300 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1301 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1302 | size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1303 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1304 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 1305 | size_t ret = 0; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1306 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1307 | for (nd = rb_first(machines); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1308 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 1309 | ret += __dsos__fprintf(&pos->kernel_dsos, fp); |
| 1310 | ret += __dsos__fprintf(&pos->user_dsos, fp); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1311 | } |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 1312 | |
| 1313 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1314 | } |
| 1315 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1316 | size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, |
| 1317 | bool with_hits) |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 1318 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1319 | return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, with_hits) + |
| 1320 | __dsos__fprintf_buildid(&machine->user_dsos, fp, with_hits); |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 1321 | } |
| 1322 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1323 | size_t machines__fprintf_dsos_buildid(struct rb_root *machines, |
| 1324 | FILE *fp, bool with_hits) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1325 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1326 | struct rb_node *nd; |
| 1327 | size_t ret = 0; |
| 1328 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1329 | for (nd = rb_first(machines); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1330 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 1331 | ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1332 | } |
| 1333 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1334 | } |
| 1335 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1336 | static struct dso *machine__get_kernel(struct machine *machine) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1337 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1338 | const char *vmlinux_name = NULL; |
| 1339 | struct dso *kernel; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1340 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1341 | if (machine__is_host(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1342 | vmlinux_name = symbol_conf.vmlinux_name; |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1343 | if (!vmlinux_name) |
| 1344 | vmlinux_name = "[kernel.kallsyms]"; |
| 1345 | |
| 1346 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 1347 | "[kernel]", |
| 1348 | DSO_TYPE_KERNEL); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1349 | } else { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1350 | char bf[PATH_MAX]; |
| 1351 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1352 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1353 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1354 | if (!vmlinux_name) |
| 1355 | vmlinux_name = machine__mmap_name(machine, bf, |
| 1356 | sizeof(bf)); |
| 1357 | |
| 1358 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 1359 | "[guest.kernel]", |
| 1360 | DSO_TYPE_GUEST_KERNEL); |
Arnaldo Carvalho de Melo | 8d92c02 | 2010-02-03 16:52:02 -0200 | [diff] [blame] | 1361 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1362 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1363 | if (kernel != NULL && (!kernel->has_build_id)) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1364 | dso__read_running_kernel_build_id(kernel, machine); |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1365 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1366 | return kernel; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1367 | } |
| 1368 | |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 1369 | struct process_args { |
| 1370 | u64 start; |
| 1371 | }; |
| 1372 | |
| 1373 | static int symbol__in_kernel(void *arg, const char *name, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1374 | char type __maybe_unused, u64 start) |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 1375 | { |
| 1376 | struct process_args *args = arg; |
| 1377 | |
| 1378 | if (strchr(name, '[')) |
| 1379 | return 0; |
| 1380 | |
| 1381 | args->start = start; |
| 1382 | return 1; |
| 1383 | } |
| 1384 | |
| 1385 | /* Figure out the start address of kernel map from /proc/kallsyms */ |
| 1386 | static u64 machine__get_kernel_start_addr(struct machine *machine) |
| 1387 | { |
| 1388 | const char *filename; |
| 1389 | char path[PATH_MAX]; |
| 1390 | struct process_args args; |
| 1391 | |
| 1392 | if (machine__is_host(machine)) { |
| 1393 | filename = "/proc/kallsyms"; |
| 1394 | } else { |
| 1395 | if (machine__is_default_guest(machine)) |
| 1396 | filename = (char *)symbol_conf.default_guest_kallsyms; |
| 1397 | else { |
| 1398 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
| 1399 | filename = path; |
| 1400 | } |
| 1401 | } |
| 1402 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1403 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) |
| 1404 | return 0; |
| 1405 | |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 1406 | if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) |
| 1407 | return 0; |
| 1408 | |
| 1409 | return args.start; |
| 1410 | } |
| 1411 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1412 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1413 | { |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 1414 | enum map_type type; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1415 | u64 start = machine__get_kernel_start_addr(machine); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1416 | |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 1417 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1418 | struct kmap *kmap; |
| 1419 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1420 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); |
| 1421 | if (machine->vmlinux_maps[type] == NULL) |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 1422 | return -1; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1423 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1424 | machine->vmlinux_maps[type]->map_ip = |
| 1425 | machine->vmlinux_maps[type]->unmap_ip = |
| 1426 | identity__map_ip; |
| 1427 | kmap = map__kmap(machine->vmlinux_maps[type]); |
| 1428 | kmap->kmaps = &machine->kmaps; |
| 1429 | map_groups__insert(&machine->kmaps, |
| 1430 | machine->vmlinux_maps[type]); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1431 | } |
| 1432 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1433 | return 0; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1434 | } |
| 1435 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1436 | void machine__destroy_kernel_maps(struct machine *machine) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1437 | { |
| 1438 | enum map_type type; |
| 1439 | |
| 1440 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
| 1441 | struct kmap *kmap; |
| 1442 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1443 | if (machine->vmlinux_maps[type] == NULL) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1444 | continue; |
| 1445 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1446 | kmap = map__kmap(machine->vmlinux_maps[type]); |
| 1447 | map_groups__remove(&machine->kmaps, |
| 1448 | machine->vmlinux_maps[type]); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1449 | if (kmap->ref_reloc_sym) { |
| 1450 | /* |
| 1451 | * ref_reloc_sym is shared among all maps, so free just |
| 1452 | * on one of them. |
| 1453 | */ |
| 1454 | if (type == MAP__FUNCTION) { |
| 1455 | free((char *)kmap->ref_reloc_sym->name); |
| 1456 | kmap->ref_reloc_sym->name = NULL; |
| 1457 | free(kmap->ref_reloc_sym); |
| 1458 | } |
| 1459 | kmap->ref_reloc_sym = NULL; |
| 1460 | } |
| 1461 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1462 | map__delete(machine->vmlinux_maps[type]); |
| 1463 | machine->vmlinux_maps[type] = NULL; |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1464 | } |
| 1465 | } |
| 1466 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1467 | int machine__create_kernel_maps(struct machine *machine) |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1468 | { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 1469 | struct dso *kernel = machine__get_kernel(machine); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1470 | |
| 1471 | if (kernel == NULL || |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1472 | __machine__create_kernel_maps(machine, kernel) < 0) |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1473 | return -1; |
| 1474 | |
David Ahern | f51304d | 2012-07-20 17:25:46 -0600 | [diff] [blame] | 1475 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { |
| 1476 | if (machine__is_host(machine)) |
| 1477 | pr_debug("Problems creating module maps, " |
| 1478 | "continuing anyway...\n"); |
| 1479 | else |
| 1480 | pr_debug("Problems creating module maps for guest %d, " |
| 1481 | "continuing anyway...\n", machine->pid); |
| 1482 | } |
| 1483 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1484 | /* |
| 1485 | * Now that we have all the maps created, just set the ->end of them: |
| 1486 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1487 | map_groups__fixup_end(&machine->kmaps); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1488 | return 0; |
| 1489 | } |
| 1490 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1491 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1492 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1493 | while (--vmlinux_path__nr_entries >= 0) { |
| 1494 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 1495 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 1496 | } |
| 1497 | |
| 1498 | free(vmlinux_path); |
| 1499 | vmlinux_path = NULL; |
| 1500 | } |
| 1501 | |
| 1502 | static int vmlinux_path__init(void) |
| 1503 | { |
| 1504 | struct utsname uts; |
| 1505 | char bf[PATH_MAX]; |
| 1506 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1507 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 1508 | if (vmlinux_path == NULL) |
| 1509 | return -1; |
| 1510 | |
| 1511 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 1512 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1513 | goto out_fail; |
| 1514 | ++vmlinux_path__nr_entries; |
| 1515 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 1516 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1517 | goto out_fail; |
| 1518 | ++vmlinux_path__nr_entries; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1519 | |
| 1520 | /* only try running kernel version if no symfs was given */ |
| 1521 | if (symbol_conf.symfs[0] != 0) |
| 1522 | return 0; |
| 1523 | |
| 1524 | if (uname(&uts) < 0) |
| 1525 | return -1; |
| 1526 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1527 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 1528 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1529 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1530 | goto out_fail; |
| 1531 | ++vmlinux_path__nr_entries; |
| 1532 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 1533 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1534 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1535 | goto out_fail; |
| 1536 | ++vmlinux_path__nr_entries; |
| 1537 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 1538 | uts.release); |
| 1539 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1540 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1541 | goto out_fail; |
| 1542 | ++vmlinux_path__nr_entries; |
| 1543 | |
| 1544 | return 0; |
| 1545 | |
| 1546 | out_fail: |
| 1547 | vmlinux_path__exit(); |
| 1548 | return -1; |
| 1549 | } |
| 1550 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1551 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 1552 | { |
| 1553 | int i; |
| 1554 | size_t printed = 0; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1555 | struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1556 | |
| 1557 | if (kdso->has_build_id) { |
| 1558 | char filename[PATH_MAX]; |
| 1559 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) |
| 1560 | printed += fprintf(fp, "[0] %s\n", filename); |
| 1561 | } |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 1562 | |
| 1563 | for (i = 0; i < vmlinux_path__nr_entries; ++i) |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1564 | printed += fprintf(fp, "[%d] %s\n", |
| 1565 | i + kdso->has_build_id, vmlinux_path[i]); |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 1566 | |
| 1567 | return printed; |
| 1568 | } |
| 1569 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1570 | static int setup_list(struct strlist **list, const char *list_str, |
| 1571 | const char *list_name) |
| 1572 | { |
| 1573 | if (list_str == NULL) |
| 1574 | return 0; |
| 1575 | |
| 1576 | *list = strlist__new(true, list_str); |
| 1577 | if (!*list) { |
| 1578 | pr_err("problems parsing %s list\n", list_name); |
| 1579 | return -1; |
| 1580 | } |
| 1581 | return 0; |
| 1582 | } |
| 1583 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1584 | static bool symbol__read_kptr_restrict(void) |
| 1585 | { |
| 1586 | bool value = false; |
| 1587 | |
| 1588 | if (geteuid() != 0) { |
| 1589 | FILE *fp = fopen("/proc/sys/kernel/kptr_restrict", "r"); |
| 1590 | if (fp != NULL) { |
| 1591 | char line[8]; |
| 1592 | |
| 1593 | if (fgets(line, sizeof(line), fp) != NULL) |
| 1594 | value = atoi(line) != 0; |
| 1595 | |
| 1596 | fclose(fp); |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | return value; |
| 1601 | } |
| 1602 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 1603 | int symbol__init(void) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1604 | { |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1605 | const char *symfs; |
| 1606 | |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 1607 | if (symbol_conf.initialized) |
| 1608 | return 0; |
| 1609 | |
Irina Tirdea | 9ac3e48 | 2012-09-11 01:15:01 +0300 | [diff] [blame] | 1610 | symbol_conf.priv_size = PERF_ALIGN(symbol_conf.priv_size, sizeof(u64)); |
David S. Miller | 4d43951 | 2011-03-29 14:18:39 -0300 | [diff] [blame] | 1611 | |
Namhyung Kim | 166ccc9 | 2012-08-06 13:41:19 +0900 | [diff] [blame] | 1612 | symbol__elf_init(); |
| 1613 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 1614 | if (symbol_conf.sort_by_name) |
| 1615 | symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - |
| 1616 | sizeof(struct symbol)); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1617 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 1618 | if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1619 | return -1; |
| 1620 | |
Arnaldo Carvalho de Melo | c410a33 | 2009-12-15 20:04:41 -0200 | [diff] [blame] | 1621 | if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') { |
| 1622 | pr_err("'.' is the only non valid --field-separator argument\n"); |
| 1623 | return -1; |
| 1624 | } |
| 1625 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1626 | if (setup_list(&symbol_conf.dso_list, |
| 1627 | symbol_conf.dso_list_str, "dso") < 0) |
| 1628 | return -1; |
| 1629 | |
| 1630 | if (setup_list(&symbol_conf.comm_list, |
| 1631 | symbol_conf.comm_list_str, "comm") < 0) |
| 1632 | goto out_free_dso_list; |
| 1633 | |
| 1634 | if (setup_list(&symbol_conf.sym_list, |
| 1635 | symbol_conf.sym_list_str, "symbol") < 0) |
| 1636 | goto out_free_comm_list; |
| 1637 | |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1638 | /* |
| 1639 | * A path to symbols of "/" is identical to "" |
| 1640 | * reset here for simplicity. |
| 1641 | */ |
| 1642 | symfs = realpath(symbol_conf.symfs, NULL); |
| 1643 | if (symfs == NULL) |
| 1644 | symfs = symbol_conf.symfs; |
| 1645 | if (strcmp(symfs, "/") == 0) |
| 1646 | symbol_conf.symfs = ""; |
| 1647 | if (symfs != symbol_conf.symfs) |
| 1648 | free((void *)symfs); |
| 1649 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1650 | symbol_conf.kptr_restrict = symbol__read_kptr_restrict(); |
| 1651 | |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 1652 | symbol_conf.initialized = true; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 1653 | return 0; |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1654 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1655 | out_free_comm_list: |
| 1656 | strlist__delete(symbol_conf.comm_list); |
Namhyung Kim | d74c896 | 2011-12-13 00:16:52 +0900 | [diff] [blame] | 1657 | out_free_dso_list: |
| 1658 | strlist__delete(symbol_conf.dso_list); |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1659 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 1660 | } |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1661 | |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 1662 | void symbol__exit(void) |
| 1663 | { |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 1664 | if (!symbol_conf.initialized) |
| 1665 | return; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 1666 | strlist__delete(symbol_conf.sym_list); |
| 1667 | strlist__delete(symbol_conf.dso_list); |
| 1668 | strlist__delete(symbol_conf.comm_list); |
| 1669 | vmlinux_path__exit(); |
| 1670 | symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 1671 | symbol_conf.initialized = false; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 1672 | } |
| 1673 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1674 | int machines__create_kernel_maps(struct rb_root *machines, pid_t pid) |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 1675 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1676 | struct machine *machine = machines__findnew(machines, pid); |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1677 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1678 | if (machine == NULL) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1679 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 1680 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1681 | return machine__create_kernel_maps(machine); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1682 | } |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1683 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1684 | int machines__create_guest_kernel_maps(struct rb_root *machines) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1685 | { |
| 1686 | int ret = 0; |
| 1687 | struct dirent **namelist = NULL; |
| 1688 | int i, items = 0; |
| 1689 | char path[PATH_MAX]; |
| 1690 | pid_t pid; |
David Ahern | 347ed99 | 2012-07-29 20:54:35 -0600 | [diff] [blame] | 1691 | char *endp; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1692 | |
| 1693 | if (symbol_conf.default_guest_vmlinux_name || |
| 1694 | symbol_conf.default_guest_modules || |
| 1695 | symbol_conf.default_guest_kallsyms) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1696 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1697 | } |
| 1698 | |
| 1699 | if (symbol_conf.guestmount) { |
| 1700 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); |
| 1701 | if (items <= 0) |
| 1702 | return -ENOENT; |
| 1703 | for (i = 0; i < items; i++) { |
| 1704 | if (!isdigit(namelist[i]->d_name[0])) { |
| 1705 | /* Filter out . and .. */ |
| 1706 | continue; |
| 1707 | } |
David Ahern | 347ed99 | 2012-07-29 20:54:35 -0600 | [diff] [blame] | 1708 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); |
| 1709 | if ((*endp != '\0') || |
| 1710 | (endp == namelist[i]->d_name) || |
| 1711 | (errno == ERANGE)) { |
| 1712 | pr_debug("invalid directory (%s). Skipping.\n", |
| 1713 | namelist[i]->d_name); |
| 1714 | continue; |
| 1715 | } |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1716 | sprintf(path, "%s/%s/proc/kallsyms", |
| 1717 | symbol_conf.guestmount, |
| 1718 | namelist[i]->d_name); |
| 1719 | ret = access(path, R_OK); |
| 1720 | if (ret) { |
| 1721 | pr_debug("Can't access file %s\n", path); |
| 1722 | goto failure; |
| 1723 | } |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1724 | machines__create_kernel_maps(machines, pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1725 | } |
| 1726 | failure: |
| 1727 | free(namelist); |
| 1728 | } |
| 1729 | |
| 1730 | return ret; |
| 1731 | } |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1732 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1733 | void machines__destroy_guest_kernel_maps(struct rb_root *machines) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1734 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1735 | struct rb_node *next = rb_first(machines); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1736 | |
| 1737 | while (next) { |
| 1738 | struct machine *pos = rb_entry(next, struct machine, rb_node); |
| 1739 | |
| 1740 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1741 | rb_erase(&pos->rb_node, machines); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 1742 | machine__delete(pos); |
| 1743 | } |
| 1744 | } |
| 1745 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1746 | int machine__load_kallsyms(struct machine *machine, const char *filename, |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1747 | enum map_type type, symbol_filter_t filter) |
| 1748 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1749 | struct map *map = machine->vmlinux_maps[type]; |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1750 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); |
| 1751 | |
| 1752 | if (ret > 0) { |
| 1753 | dso__set_loaded(map->dso, type); |
| 1754 | /* |
| 1755 | * Since /proc/kallsyms will have multiple sessions for the |
| 1756 | * kernel, with modules between them, fixup the end of all |
| 1757 | * sections. |
| 1758 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1759 | __map_groups__fixup_end(&machine->kmaps, type); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | return ret; |
| 1763 | } |
| 1764 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1765 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1766 | symbol_filter_t filter) |
| 1767 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1768 | struct map *map = machine->vmlinux_maps[type]; |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 1769 | int ret = dso__load_vmlinux_path(map->dso, map, filter); |
| 1770 | |
| 1771 | if (ret > 0) { |
| 1772 | dso__set_loaded(map->dso, type); |
| 1773 | map__reloc_vmlinux(map); |
| 1774 | } |
| 1775 | |
| 1776 | return ret; |
| 1777 | } |