Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1 | #include "callchain.h" |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 2 | #include "debug.h" |
| 3 | #include "event.h" |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 4 | #include "evsel.h" |
| 5 | #include "hist.h" |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 6 | #include "machine.h" |
| 7 | #include "map.h" |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 8 | #include "sort.h" |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 9 | #include "strlist.h" |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 10 | #include "thread.h" |
Adrian Hunter | d027b64 | 2014-07-23 14:23:00 +0300 | [diff] [blame] | 11 | #include "vdso.h" |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 12 | #include <stdbool.h> |
Arnaldo Carvalho de Melo | c506c96 | 2013-12-11 09:15:00 -0300 | [diff] [blame] | 13 | #include <symbol/kallsyms.h> |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 14 | #include "unwind.h" |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 15 | #include "linux/hash.h" |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 16 | |
Arnaldo Carvalho de Melo | e167f99 | 2014-10-14 15:07:48 -0300 | [diff] [blame] | 17 | static void dsos__init(struct dsos *dsos) |
| 18 | { |
| 19 | INIT_LIST_HEAD(&dsos->head); |
| 20 | dsos->root = RB_ROOT; |
| 21 | } |
| 22 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 23 | int machine__init(struct machine *machine, const char *root_dir, pid_t pid) |
| 24 | { |
Arnaldo Carvalho de Melo | 11246c7 | 2014-10-21 17:29:02 -0300 | [diff] [blame] | 25 | map_groups__init(&machine->kmaps, machine); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 26 | RB_CLEAR_NODE(&machine->rb_node); |
Arnaldo Carvalho de Melo | e167f99 | 2014-10-14 15:07:48 -0300 | [diff] [blame] | 27 | dsos__init(&machine->user_dsos); |
| 28 | dsos__init(&machine->kernel_dsos); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 29 | |
| 30 | machine->threads = RB_ROOT; |
| 31 | INIT_LIST_HEAD(&machine->dead_threads); |
| 32 | machine->last_match = NULL; |
| 33 | |
Adrian Hunter | d027b64 | 2014-07-23 14:23:00 +0300 | [diff] [blame] | 34 | machine->vdso_info = NULL; |
| 35 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 36 | machine->pid = pid; |
| 37 | |
Adrian Hunter | 611a5ce | 2013-08-08 14:32:20 +0300 | [diff] [blame] | 38 | machine->symbol_filter = NULL; |
Jiri Olsa | 14bd6d2 | 2014-01-07 13:47:19 +0100 | [diff] [blame] | 39 | machine->id_hdr_size = 0; |
Adrian Hunter | cfe1c41 | 2014-07-31 09:00:45 +0300 | [diff] [blame] | 40 | machine->comm_exec = false; |
Adrian Hunter | fbe2af4 | 2014-08-15 22:08:39 +0300 | [diff] [blame] | 41 | machine->kernel_start = 0; |
Adrian Hunter | 611a5ce | 2013-08-08 14:32:20 +0300 | [diff] [blame] | 42 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 43 | machine->root_dir = strdup(root_dir); |
| 44 | if (machine->root_dir == NULL) |
| 45 | return -ENOMEM; |
| 46 | |
| 47 | if (pid != HOST_KERNEL_ID) { |
Adrian Hunter | 1fcb876 | 2014-07-14 13:02:25 +0300 | [diff] [blame] | 48 | struct thread *thread = machine__findnew_thread(machine, -1, |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 49 | pid); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 50 | char comm[64]; |
| 51 | |
| 52 | if (thread == NULL) |
| 53 | return -ENOMEM; |
| 54 | |
| 55 | snprintf(comm, sizeof(comm), "[guest/%d]", pid); |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 56 | thread__set_comm(thread, comm, 0); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 57 | } |
| 58 | |
Adrian Hunter | b9d266b | 2014-07-22 16:17:25 +0300 | [diff] [blame] | 59 | machine->current_tid = NULL; |
| 60 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 61 | return 0; |
| 62 | } |
| 63 | |
David Ahern | 8fb598e | 2013-09-28 13:13:00 -0600 | [diff] [blame] | 64 | struct machine *machine__new_host(void) |
| 65 | { |
| 66 | struct machine *machine = malloc(sizeof(*machine)); |
| 67 | |
| 68 | if (machine != NULL) { |
| 69 | machine__init(machine, "", HOST_KERNEL_ID); |
| 70 | |
| 71 | if (machine__create_kernel_maps(machine) < 0) |
| 72 | goto out_delete; |
| 73 | } |
| 74 | |
| 75 | return machine; |
| 76 | out_delete: |
| 77 | free(machine); |
| 78 | return NULL; |
| 79 | } |
| 80 | |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 81 | static void dsos__delete(struct dsos *dsos) |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 82 | { |
| 83 | struct dso *pos, *n; |
| 84 | |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 85 | list_for_each_entry_safe(pos, n, &dsos->head, node) { |
Waiman Long | 4598a0a | 2014-09-30 13:36:15 -0400 | [diff] [blame] | 86 | RB_CLEAR_NODE(&pos->rb_node); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 87 | list_del(&pos->node); |
| 88 | dso__delete(pos); |
| 89 | } |
| 90 | } |
| 91 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 92 | void machine__delete_threads(struct machine *machine) |
| 93 | { |
| 94 | struct rb_node *nd = rb_first(&machine->threads); |
| 95 | |
| 96 | while (nd) { |
| 97 | struct thread *t = rb_entry(nd, struct thread, rb_node); |
| 98 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 99 | nd = rb_next(nd); |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 100 | machine__remove_thread(machine, t); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 101 | } |
| 102 | } |
| 103 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 104 | void machine__exit(struct machine *machine) |
| 105 | { |
| 106 | map_groups__exit(&machine->kmaps); |
| 107 | dsos__delete(&machine->user_dsos); |
| 108 | dsos__delete(&machine->kernel_dsos); |
Adrian Hunter | d027b64 | 2014-07-23 14:23:00 +0300 | [diff] [blame] | 109 | vdso__exit(machine); |
Arnaldo Carvalho de Melo | 0466252 | 2013-12-26 17:41:15 -0300 | [diff] [blame] | 110 | zfree(&machine->root_dir); |
Adrian Hunter | b9d266b | 2014-07-22 16:17:25 +0300 | [diff] [blame] | 111 | zfree(&machine->current_tid); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | void machine__delete(struct machine *machine) |
| 115 | { |
| 116 | machine__exit(machine); |
| 117 | free(machine); |
| 118 | } |
| 119 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 120 | void machines__init(struct machines *machines) |
| 121 | { |
| 122 | machine__init(&machines->host, "", HOST_KERNEL_ID); |
| 123 | machines->guests = RB_ROOT; |
Adrian Hunter | 611a5ce | 2013-08-08 14:32:20 +0300 | [diff] [blame] | 124 | machines->symbol_filter = NULL; |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | void machines__exit(struct machines *machines) |
| 128 | { |
| 129 | machine__exit(&machines->host); |
| 130 | /* XXX exit guest */ |
| 131 | } |
| 132 | |
| 133 | struct machine *machines__add(struct machines *machines, pid_t pid, |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 134 | const char *root_dir) |
| 135 | { |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 136 | struct rb_node **p = &machines->guests.rb_node; |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 137 | struct rb_node *parent = NULL; |
| 138 | struct machine *pos, *machine = malloc(sizeof(*machine)); |
| 139 | |
| 140 | if (machine == NULL) |
| 141 | return NULL; |
| 142 | |
| 143 | if (machine__init(machine, root_dir, pid) != 0) { |
| 144 | free(machine); |
| 145 | return NULL; |
| 146 | } |
| 147 | |
Adrian Hunter | 611a5ce | 2013-08-08 14:32:20 +0300 | [diff] [blame] | 148 | machine->symbol_filter = machines->symbol_filter; |
| 149 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 150 | while (*p != NULL) { |
| 151 | parent = *p; |
| 152 | pos = rb_entry(parent, struct machine, rb_node); |
| 153 | if (pid < pos->pid) |
| 154 | p = &(*p)->rb_left; |
| 155 | else |
| 156 | p = &(*p)->rb_right; |
| 157 | } |
| 158 | |
| 159 | rb_link_node(&machine->rb_node, parent, p); |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 160 | rb_insert_color(&machine->rb_node, &machines->guests); |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 161 | |
| 162 | return machine; |
| 163 | } |
| 164 | |
Adrian Hunter | 611a5ce | 2013-08-08 14:32:20 +0300 | [diff] [blame] | 165 | void machines__set_symbol_filter(struct machines *machines, |
| 166 | symbol_filter_t symbol_filter) |
| 167 | { |
| 168 | struct rb_node *nd; |
| 169 | |
| 170 | machines->symbol_filter = symbol_filter; |
| 171 | machines->host.symbol_filter = symbol_filter; |
| 172 | |
| 173 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
| 174 | struct machine *machine = rb_entry(nd, struct machine, rb_node); |
| 175 | |
| 176 | machine->symbol_filter = symbol_filter; |
| 177 | } |
| 178 | } |
| 179 | |
Adrian Hunter | cfe1c41 | 2014-07-31 09:00:45 +0300 | [diff] [blame] | 180 | void machines__set_comm_exec(struct machines *machines, bool comm_exec) |
| 181 | { |
| 182 | struct rb_node *nd; |
| 183 | |
| 184 | machines->host.comm_exec = comm_exec; |
| 185 | |
| 186 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
| 187 | struct machine *machine = rb_entry(nd, struct machine, rb_node); |
| 188 | |
| 189 | machine->comm_exec = comm_exec; |
| 190 | } |
| 191 | } |
| 192 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 193 | struct machine *machines__find(struct machines *machines, pid_t pid) |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 194 | { |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 195 | struct rb_node **p = &machines->guests.rb_node; |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 196 | struct rb_node *parent = NULL; |
| 197 | struct machine *machine; |
| 198 | struct machine *default_machine = NULL; |
| 199 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 200 | if (pid == HOST_KERNEL_ID) |
| 201 | return &machines->host; |
| 202 | |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 203 | while (*p != NULL) { |
| 204 | parent = *p; |
| 205 | machine = rb_entry(parent, struct machine, rb_node); |
| 206 | if (pid < machine->pid) |
| 207 | p = &(*p)->rb_left; |
| 208 | else if (pid > machine->pid) |
| 209 | p = &(*p)->rb_right; |
| 210 | else |
| 211 | return machine; |
| 212 | if (!machine->pid) |
| 213 | default_machine = machine; |
| 214 | } |
| 215 | |
| 216 | return default_machine; |
| 217 | } |
| 218 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 219 | struct machine *machines__findnew(struct machines *machines, pid_t pid) |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 220 | { |
| 221 | char path[PATH_MAX]; |
| 222 | const char *root_dir = ""; |
| 223 | struct machine *machine = machines__find(machines, pid); |
| 224 | |
| 225 | if (machine && (machine->pid == pid)) |
| 226 | goto out; |
| 227 | |
| 228 | if ((pid != HOST_KERNEL_ID) && |
| 229 | (pid != DEFAULT_GUEST_KERNEL_ID) && |
| 230 | (symbol_conf.guestmount)) { |
| 231 | sprintf(path, "%s/%d", symbol_conf.guestmount, pid); |
| 232 | if (access(path, R_OK)) { |
| 233 | static struct strlist *seen; |
| 234 | |
| 235 | if (!seen) |
| 236 | seen = strlist__new(true, NULL); |
| 237 | |
| 238 | if (!strlist__has_entry(seen, path)) { |
| 239 | pr_err("Can't access file %s\n", path); |
| 240 | strlist__add(seen, path); |
| 241 | } |
| 242 | machine = NULL; |
| 243 | goto out; |
| 244 | } |
| 245 | root_dir = path; |
| 246 | } |
| 247 | |
| 248 | machine = machines__add(machines, pid, root_dir); |
| 249 | out: |
| 250 | return machine; |
| 251 | } |
| 252 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 253 | void machines__process_guests(struct machines *machines, |
| 254 | machine__process_t process, void *data) |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 255 | { |
| 256 | struct rb_node *nd; |
| 257 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 258 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 259 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
| 260 | process(pos, data); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | char *machine__mmap_name(struct machine *machine, char *bf, size_t size) |
| 265 | { |
| 266 | if (machine__is_host(machine)) |
| 267 | snprintf(bf, size, "[%s]", "kernel.kallsyms"); |
| 268 | else if (machine__is_default_guest(machine)) |
| 269 | snprintf(bf, size, "[%s]", "guest.kernel.kallsyms"); |
| 270 | else { |
| 271 | snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", |
| 272 | machine->pid); |
| 273 | } |
| 274 | |
| 275 | return bf; |
| 276 | } |
| 277 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 278 | void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size) |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 279 | { |
| 280 | struct rb_node *node; |
| 281 | struct machine *machine; |
| 282 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 283 | machines->host.id_hdr_size = id_hdr_size; |
| 284 | |
| 285 | for (node = rb_first(&machines->guests); node; node = rb_next(node)) { |
Arnaldo Carvalho de Melo | 69d2591 | 2012-11-09 11:32:52 -0300 | [diff] [blame] | 286 | machine = rb_entry(node, struct machine, rb_node); |
| 287 | machine->id_hdr_size = id_hdr_size; |
| 288 | } |
| 289 | |
| 290 | return; |
| 291 | } |
| 292 | |
Adrian Hunter | 29ce361 | 2014-07-16 11:07:13 +0300 | [diff] [blame] | 293 | static void machine__update_thread_pid(struct machine *machine, |
| 294 | struct thread *th, pid_t pid) |
| 295 | { |
| 296 | struct thread *leader; |
| 297 | |
| 298 | if (pid == th->pid_ || pid == -1 || th->pid_ != -1) |
| 299 | return; |
| 300 | |
| 301 | th->pid_ = pid; |
| 302 | |
| 303 | if (th->pid_ == th->tid) |
| 304 | return; |
| 305 | |
| 306 | leader = machine__findnew_thread(machine, th->pid_, th->pid_); |
| 307 | if (!leader) |
| 308 | goto out_err; |
| 309 | |
| 310 | if (!leader->mg) |
Arnaldo Carvalho de Melo | 11246c7 | 2014-10-21 17:29:02 -0300 | [diff] [blame] | 311 | leader->mg = map_groups__new(machine); |
Adrian Hunter | 29ce361 | 2014-07-16 11:07:13 +0300 | [diff] [blame] | 312 | |
| 313 | if (!leader->mg) |
| 314 | goto out_err; |
| 315 | |
| 316 | if (th->mg == leader->mg) |
| 317 | return; |
| 318 | |
| 319 | if (th->mg) { |
| 320 | /* |
| 321 | * Maps are created from MMAP events which provide the pid and |
| 322 | * tid. Consequently there never should be any maps on a thread |
| 323 | * with an unknown pid. Just print an error if there are. |
| 324 | */ |
| 325 | if (!map_groups__empty(th->mg)) |
| 326 | pr_err("Discarding thread maps for %d:%d\n", |
| 327 | th->pid_, th->tid); |
| 328 | map_groups__delete(th->mg); |
| 329 | } |
| 330 | |
| 331 | th->mg = map_groups__get(leader->mg); |
| 332 | |
| 333 | return; |
| 334 | |
| 335 | out_err: |
| 336 | pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid); |
| 337 | } |
| 338 | |
Adrian Hunter | 99d725f | 2013-08-26 16:00:19 +0300 | [diff] [blame] | 339 | static struct thread *__machine__findnew_thread(struct machine *machine, |
| 340 | pid_t pid, pid_t tid, |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 341 | bool create) |
| 342 | { |
| 343 | struct rb_node **p = &machine->threads.rb_node; |
| 344 | struct rb_node *parent = NULL; |
| 345 | struct thread *th; |
| 346 | |
| 347 | /* |
Adrian Hunter | 3805123 | 2013-07-04 16:20:31 +0300 | [diff] [blame] | 348 | * Front-end cache - TID lookups come in blocks, |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 349 | * so most of the time we dont have to look up |
| 350 | * the full rbtree: |
| 351 | */ |
Adrian Hunter | 29ce361 | 2014-07-16 11:07:13 +0300 | [diff] [blame] | 352 | th = machine->last_match; |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 353 | if (th != NULL) { |
| 354 | if (th->tid == tid) { |
| 355 | machine__update_thread_pid(machine, th, pid); |
| 356 | return th; |
| 357 | } |
| 358 | |
| 359 | thread__zput(machine->last_match); |
Adrian Hunter | 99d725f | 2013-08-26 16:00:19 +0300 | [diff] [blame] | 360 | } |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 361 | |
| 362 | while (*p != NULL) { |
| 363 | parent = *p; |
| 364 | th = rb_entry(parent, struct thread, rb_node); |
| 365 | |
Adrian Hunter | 3805123 | 2013-07-04 16:20:31 +0300 | [diff] [blame] | 366 | if (th->tid == tid) { |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 367 | machine->last_match = thread__get(th); |
Adrian Hunter | 29ce361 | 2014-07-16 11:07:13 +0300 | [diff] [blame] | 368 | machine__update_thread_pid(machine, th, pid); |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 369 | return th; |
| 370 | } |
| 371 | |
Adrian Hunter | 3805123 | 2013-07-04 16:20:31 +0300 | [diff] [blame] | 372 | if (tid < th->tid) |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 373 | p = &(*p)->rb_left; |
| 374 | else |
| 375 | p = &(*p)->rb_right; |
| 376 | } |
| 377 | |
| 378 | if (!create) |
| 379 | return NULL; |
| 380 | |
Adrian Hunter | 99d725f | 2013-08-26 16:00:19 +0300 | [diff] [blame] | 381 | th = thread__new(pid, tid); |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 382 | if (th != NULL) { |
| 383 | rb_link_node(&th->rb_node, parent, p); |
| 384 | rb_insert_color(&th->rb_node, &machine->threads); |
Jiri Olsa | cddcef6 | 2014-04-09 20:54:29 +0200 | [diff] [blame] | 385 | |
| 386 | /* |
| 387 | * We have to initialize map_groups separately |
| 388 | * after rb tree is updated. |
| 389 | * |
| 390 | * The reason is that we call machine__findnew_thread |
| 391 | * within thread__init_map_groups to find the thread |
| 392 | * leader and that would screwed the rb tree. |
| 393 | */ |
Adrian Hunter | 418029b | 2014-07-16 10:19:44 +0300 | [diff] [blame] | 394 | if (thread__init_map_groups(th, machine)) { |
Namhyung Kim | 260d819 | 2015-01-09 09:38:12 +0900 | [diff] [blame] | 395 | rb_erase(&th->rb_node, &machine->threads); |
Adrian Hunter | 418029b | 2014-07-16 10:19:44 +0300 | [diff] [blame] | 396 | thread__delete(th); |
Jiri Olsa | cddcef6 | 2014-04-09 20:54:29 +0200 | [diff] [blame] | 397 | return NULL; |
Adrian Hunter | 418029b | 2014-07-16 10:19:44 +0300 | [diff] [blame] | 398 | } |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 399 | /* |
| 400 | * It is now in the rbtree, get a ref |
| 401 | */ |
| 402 | thread__get(th); |
| 403 | machine->last_match = thread__get(th); |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | return th; |
| 407 | } |
| 408 | |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 409 | struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, |
| 410 | pid_t tid) |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 411 | { |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 412 | return __machine__findnew_thread(machine, pid, tid, true); |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 413 | } |
| 414 | |
Jiri Olsa | d75e609 | 2014-03-14 15:00:03 +0100 | [diff] [blame] | 415 | struct thread *machine__find_thread(struct machine *machine, pid_t pid, |
| 416 | pid_t tid) |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 417 | { |
Jiri Olsa | d75e609 | 2014-03-14 15:00:03 +0100 | [diff] [blame] | 418 | return __machine__findnew_thread(machine, pid, tid, false); |
Arnaldo Carvalho de Melo | 9d2f8e2 | 2012-10-06 15:43:20 -0300 | [diff] [blame] | 419 | } |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 420 | |
Adrian Hunter | cfe1c41 | 2014-07-31 09:00:45 +0300 | [diff] [blame] | 421 | struct comm *machine__thread_exec_comm(struct machine *machine, |
| 422 | struct thread *thread) |
| 423 | { |
| 424 | if (machine->comm_exec) |
| 425 | return thread__exec_comm(thread); |
| 426 | else |
| 427 | return thread__comm(thread); |
| 428 | } |
| 429 | |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 430 | int machine__process_comm_event(struct machine *machine, union perf_event *event, |
| 431 | struct perf_sample *sample) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 432 | { |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 433 | struct thread *thread = machine__findnew_thread(machine, |
| 434 | event->comm.pid, |
| 435 | event->comm.tid); |
Adrian Hunter | 65de51f | 2014-07-31 09:00:44 +0300 | [diff] [blame] | 436 | bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 437 | |
Adrian Hunter | cfe1c41 | 2014-07-31 09:00:45 +0300 | [diff] [blame] | 438 | if (exec) |
| 439 | machine->comm_exec = true; |
| 440 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 441 | if (dump_trace) |
| 442 | perf_event__fprintf_comm(event, stdout); |
| 443 | |
Adrian Hunter | 65de51f | 2014-07-31 09:00:44 +0300 | [diff] [blame] | 444 | if (thread == NULL || |
| 445 | __thread__set_comm(thread, event->comm.comm, sample->time, exec)) { |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 446 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
| 447 | return -1; |
| 448 | } |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | int machine__process_lost_event(struct machine *machine __maybe_unused, |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 454 | union perf_event *event, struct perf_sample *sample __maybe_unused) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 455 | { |
| 456 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", |
| 457 | event->lost.id, event->lost.lost); |
| 458 | return 0; |
| 459 | } |
| 460 | |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 461 | static struct dso* |
| 462 | machine__module_dso(struct machine *machine, struct kmod_path *m, |
| 463 | const char *filename) |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 464 | { |
| 465 | struct dso *dso; |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 466 | |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 467 | dso = dsos__find(&machine->kernel_dsos, m->name, true); |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 468 | if (!dso) { |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 469 | dso = dsos__addnew(&machine->kernel_dsos, m->name); |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 470 | if (dso == NULL) |
| 471 | return NULL; |
| 472 | |
| 473 | if (machine__is_host(machine)) |
| 474 | dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE; |
| 475 | else |
| 476 | dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE; |
| 477 | |
| 478 | /* _KMODULE_COMP should be next to _KMODULE */ |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 479 | if (m->kmod && m->comp) |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 480 | dso->symtab_type++; |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 481 | |
| 482 | dso__set_short_name(dso, strdup(m->name), true); |
| 483 | dso__set_long_name(dso, strdup(filename), true); |
Jiri Olsa | da17ea3 | 2015-02-12 22:10:52 +0100 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | return dso; |
| 487 | } |
| 488 | |
Adrian Hunter | 4a96f7a | 2015-04-30 17:37:29 +0300 | [diff] [blame^] | 489 | int machine__process_aux_event(struct machine *machine __maybe_unused, |
| 490 | union perf_event *event) |
| 491 | { |
| 492 | if (dump_trace) |
| 493 | perf_event__fprintf_aux(event, stdout); |
| 494 | return 0; |
| 495 | } |
| 496 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 497 | struct map *machine__new_module(struct machine *machine, u64 start, |
| 498 | const char *filename) |
| 499 | { |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 500 | struct map *map = NULL; |
| 501 | struct dso *dso; |
| 502 | struct kmod_path m; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 503 | |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 504 | if (kmod_path__parse_name(&m, filename)) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 505 | return NULL; |
| 506 | |
Jiri Olsa | bc84f46 | 2015-02-17 17:31:18 +0100 | [diff] [blame] | 507 | map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION, |
| 508 | m.name); |
| 509 | if (map) |
| 510 | goto out; |
| 511 | |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 512 | dso = machine__module_dso(machine, &m, filename); |
| 513 | if (dso == NULL) |
| 514 | goto out; |
| 515 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 516 | map = map__new2(start, dso, MAP__FUNCTION); |
| 517 | if (map == NULL) |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 518 | goto out; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 519 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 520 | map_groups__insert(&machine->kmaps, map); |
Jiri Olsa | ca33380 | 2015-02-17 17:29:57 +0100 | [diff] [blame] | 521 | |
| 522 | out: |
| 523 | free(m.name); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 524 | return map; |
| 525 | } |
| 526 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 527 | size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 528 | { |
| 529 | struct rb_node *nd; |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 530 | size_t ret = __dsos__fprintf(&machines->host.kernel_dsos.head, fp) + |
| 531 | __dsos__fprintf(&machines->host.user_dsos.head, fp); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 532 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 533 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 534 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 535 | ret += __dsos__fprintf(&pos->kernel_dsos.head, fp); |
| 536 | ret += __dsos__fprintf(&pos->user_dsos.head, fp); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | return ret; |
| 540 | } |
| 541 | |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 542 | size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp, |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 543 | bool (skip)(struct dso *dso, int parm), int parm) |
| 544 | { |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 545 | return __dsos__fprintf_buildid(&m->kernel_dsos.head, fp, skip, parm) + |
| 546 | __dsos__fprintf_buildid(&m->user_dsos.head, fp, skip, parm); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 547 | } |
| 548 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 549 | size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 550 | bool (skip)(struct dso *dso, int parm), int parm) |
| 551 | { |
| 552 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 553 | size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 554 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 555 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 556 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
| 557 | ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm); |
| 558 | } |
| 559 | return ret; |
| 560 | } |
| 561 | |
| 562 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) |
| 563 | { |
| 564 | int i; |
| 565 | size_t printed = 0; |
| 566 | struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso; |
| 567 | |
| 568 | if (kdso->has_build_id) { |
| 569 | char filename[PATH_MAX]; |
| 570 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) |
| 571 | printed += fprintf(fp, "[0] %s\n", filename); |
| 572 | } |
| 573 | |
| 574 | for (i = 0; i < vmlinux_path__nr_entries; ++i) |
| 575 | printed += fprintf(fp, "[%d] %s\n", |
| 576 | i + kdso->has_build_id, vmlinux_path[i]); |
| 577 | |
| 578 | return printed; |
| 579 | } |
| 580 | |
| 581 | size_t machine__fprintf(struct machine *machine, FILE *fp) |
| 582 | { |
| 583 | size_t ret = 0; |
| 584 | struct rb_node *nd; |
| 585 | |
| 586 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { |
| 587 | struct thread *pos = rb_entry(nd, struct thread, rb_node); |
| 588 | |
| 589 | ret += thread__fprintf(pos, fp); |
| 590 | } |
| 591 | |
| 592 | return ret; |
| 593 | } |
| 594 | |
| 595 | static struct dso *machine__get_kernel(struct machine *machine) |
| 596 | { |
| 597 | const char *vmlinux_name = NULL; |
| 598 | struct dso *kernel; |
| 599 | |
| 600 | if (machine__is_host(machine)) { |
| 601 | vmlinux_name = symbol_conf.vmlinux_name; |
| 602 | if (!vmlinux_name) |
| 603 | vmlinux_name = "[kernel.kallsyms]"; |
| 604 | |
| 605 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 606 | "[kernel]", |
| 607 | DSO_TYPE_KERNEL); |
| 608 | } else { |
| 609 | char bf[PATH_MAX]; |
| 610 | |
| 611 | if (machine__is_default_guest(machine)) |
| 612 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; |
| 613 | if (!vmlinux_name) |
| 614 | vmlinux_name = machine__mmap_name(machine, bf, |
| 615 | sizeof(bf)); |
| 616 | |
| 617 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 618 | "[guest.kernel]", |
| 619 | DSO_TYPE_GUEST_KERNEL); |
| 620 | } |
| 621 | |
| 622 | if (kernel != NULL && (!kernel->has_build_id)) |
| 623 | dso__read_running_kernel_build_id(kernel, machine); |
| 624 | |
| 625 | return kernel; |
| 626 | } |
| 627 | |
| 628 | struct process_args { |
| 629 | u64 start; |
| 630 | }; |
| 631 | |
Adrian Hunter | 15a0a87 | 2014-01-29 16:14:38 +0200 | [diff] [blame] | 632 | static void machine__get_kallsyms_filename(struct machine *machine, char *buf, |
| 633 | size_t bufsz) |
| 634 | { |
| 635 | if (machine__is_default_guest(machine)) |
| 636 | scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms); |
| 637 | else |
| 638 | scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); |
| 639 | } |
| 640 | |
Simon Que | a93f0e5 | 2014-06-16 11:32:09 -0700 | [diff] [blame] | 641 | const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; |
| 642 | |
| 643 | /* Figure out the start address of kernel map from /proc/kallsyms. |
| 644 | * Returns the name of the start symbol in *symbol_name. Pass in NULL as |
| 645 | * symbol_name if it's not that important. |
| 646 | */ |
Adrian Hunter | 4b99375 | 2014-08-15 22:08:38 +0300 | [diff] [blame] | 647 | static u64 machine__get_running_kernel_start(struct machine *machine, |
| 648 | const char **symbol_name) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 649 | { |
Adrian Hunter | 15a0a87 | 2014-01-29 16:14:38 +0200 | [diff] [blame] | 650 | char filename[PATH_MAX]; |
Simon Que | a93f0e5 | 2014-06-16 11:32:09 -0700 | [diff] [blame] | 651 | int i; |
| 652 | const char *name; |
| 653 | u64 addr = 0; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 654 | |
Adrian Hunter | 15a0a87 | 2014-01-29 16:14:38 +0200 | [diff] [blame] | 655 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 656 | |
| 657 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) |
| 658 | return 0; |
| 659 | |
Simon Que | a93f0e5 | 2014-06-16 11:32:09 -0700 | [diff] [blame] | 660 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { |
| 661 | addr = kallsyms__get_function_start(filename, name); |
| 662 | if (addr) |
| 663 | break; |
| 664 | } |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 665 | |
Simon Que | a93f0e5 | 2014-06-16 11:32:09 -0700 | [diff] [blame] | 666 | if (symbol_name) |
| 667 | *symbol_name = name; |
| 668 | |
| 669 | return addr; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 670 | } |
| 671 | |
| 672 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) |
| 673 | { |
| 674 | enum map_type type; |
Adrian Hunter | 4b99375 | 2014-08-15 22:08:38 +0300 | [diff] [blame] | 675 | u64 start = machine__get_running_kernel_start(machine, NULL); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 676 | |
| 677 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
| 678 | struct kmap *kmap; |
| 679 | |
| 680 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); |
| 681 | if (machine->vmlinux_maps[type] == NULL) |
| 682 | return -1; |
| 683 | |
| 684 | machine->vmlinux_maps[type]->map_ip = |
| 685 | machine->vmlinux_maps[type]->unmap_ip = |
| 686 | identity__map_ip; |
| 687 | kmap = map__kmap(machine->vmlinux_maps[type]); |
Wang Nan | ba92732 | 2015-04-07 08:22:45 +0000 | [diff] [blame] | 688 | if (!kmap) |
| 689 | return -1; |
| 690 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 691 | kmap->kmaps = &machine->kmaps; |
| 692 | map_groups__insert(&machine->kmaps, |
| 693 | machine->vmlinux_maps[type]); |
| 694 | } |
| 695 | |
| 696 | return 0; |
| 697 | } |
| 698 | |
| 699 | void machine__destroy_kernel_maps(struct machine *machine) |
| 700 | { |
| 701 | enum map_type type; |
| 702 | |
| 703 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
| 704 | struct kmap *kmap; |
| 705 | |
| 706 | if (machine->vmlinux_maps[type] == NULL) |
| 707 | continue; |
| 708 | |
| 709 | kmap = map__kmap(machine->vmlinux_maps[type]); |
| 710 | map_groups__remove(&machine->kmaps, |
| 711 | machine->vmlinux_maps[type]); |
Wang Nan | ba92732 | 2015-04-07 08:22:45 +0000 | [diff] [blame] | 712 | if (kmap && kmap->ref_reloc_sym) { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 713 | /* |
| 714 | * ref_reloc_sym is shared among all maps, so free just |
| 715 | * on one of them. |
| 716 | */ |
| 717 | if (type == MAP__FUNCTION) { |
Arnaldo Carvalho de Melo | 0466252 | 2013-12-26 17:41:15 -0300 | [diff] [blame] | 718 | zfree((char **)&kmap->ref_reloc_sym->name); |
| 719 | zfree(&kmap->ref_reloc_sym); |
| 720 | } else |
| 721 | kmap->ref_reloc_sym = NULL; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 722 | } |
| 723 | |
| 724 | map__delete(machine->vmlinux_maps[type]); |
| 725 | machine->vmlinux_maps[type] = NULL; |
| 726 | } |
| 727 | } |
| 728 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 729 | int machines__create_guest_kernel_maps(struct machines *machines) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 730 | { |
| 731 | int ret = 0; |
| 732 | struct dirent **namelist = NULL; |
| 733 | int i, items = 0; |
| 734 | char path[PATH_MAX]; |
| 735 | pid_t pid; |
| 736 | char *endp; |
| 737 | |
| 738 | if (symbol_conf.default_guest_vmlinux_name || |
| 739 | symbol_conf.default_guest_modules || |
| 740 | symbol_conf.default_guest_kallsyms) { |
| 741 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); |
| 742 | } |
| 743 | |
| 744 | if (symbol_conf.guestmount) { |
| 745 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); |
| 746 | if (items <= 0) |
| 747 | return -ENOENT; |
| 748 | for (i = 0; i < items; i++) { |
| 749 | if (!isdigit(namelist[i]->d_name[0])) { |
| 750 | /* Filter out . and .. */ |
| 751 | continue; |
| 752 | } |
| 753 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); |
| 754 | if ((*endp != '\0') || |
| 755 | (endp == namelist[i]->d_name) || |
| 756 | (errno == ERANGE)) { |
| 757 | pr_debug("invalid directory (%s). Skipping.\n", |
| 758 | namelist[i]->d_name); |
| 759 | continue; |
| 760 | } |
| 761 | sprintf(path, "%s/%s/proc/kallsyms", |
| 762 | symbol_conf.guestmount, |
| 763 | namelist[i]->d_name); |
| 764 | ret = access(path, R_OK); |
| 765 | if (ret) { |
| 766 | pr_debug("Can't access file %s\n", path); |
| 767 | goto failure; |
| 768 | } |
| 769 | machines__create_kernel_maps(machines, pid); |
| 770 | } |
| 771 | failure: |
| 772 | free(namelist); |
| 773 | } |
| 774 | |
| 775 | return ret; |
| 776 | } |
| 777 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 778 | void machines__destroy_kernel_maps(struct machines *machines) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 779 | { |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 780 | struct rb_node *next = rb_first(&machines->guests); |
| 781 | |
| 782 | machine__destroy_kernel_maps(&machines->host); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 783 | |
| 784 | while (next) { |
| 785 | struct machine *pos = rb_entry(next, struct machine, rb_node); |
| 786 | |
| 787 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 788 | rb_erase(&pos->rb_node, &machines->guests); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 789 | machine__delete(pos); |
| 790 | } |
| 791 | } |
| 792 | |
Arnaldo Carvalho de Melo | 876650e | 2012-12-18 19:15:48 -0300 | [diff] [blame] | 793 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 794 | { |
| 795 | struct machine *machine = machines__findnew(machines, pid); |
| 796 | |
| 797 | if (machine == NULL) |
| 798 | return -1; |
| 799 | |
| 800 | return machine__create_kernel_maps(machine); |
| 801 | } |
| 802 | |
| 803 | int machine__load_kallsyms(struct machine *machine, const char *filename, |
| 804 | enum map_type type, symbol_filter_t filter) |
| 805 | { |
| 806 | struct map *map = machine->vmlinux_maps[type]; |
| 807 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); |
| 808 | |
| 809 | if (ret > 0) { |
| 810 | dso__set_loaded(map->dso, type); |
| 811 | /* |
| 812 | * Since /proc/kallsyms will have multiple sessions for the |
| 813 | * kernel, with modules between them, fixup the end of all |
| 814 | * sections. |
| 815 | */ |
| 816 | __map_groups__fixup_end(&machine->kmaps, type); |
| 817 | } |
| 818 | |
| 819 | return ret; |
| 820 | } |
| 821 | |
| 822 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, |
| 823 | symbol_filter_t filter) |
| 824 | { |
| 825 | struct map *map = machine->vmlinux_maps[type]; |
| 826 | int ret = dso__load_vmlinux_path(map->dso, map, filter); |
| 827 | |
Adrian Hunter | 39b12f78 | 2013-08-07 14:38:47 +0300 | [diff] [blame] | 828 | if (ret > 0) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 829 | dso__set_loaded(map->dso, type); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 830 | |
| 831 | return ret; |
| 832 | } |
| 833 | |
| 834 | static void map_groups__fixup_end(struct map_groups *mg) |
| 835 | { |
| 836 | int i; |
| 837 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 838 | __map_groups__fixup_end(mg, i); |
| 839 | } |
| 840 | |
| 841 | static char *get_kernel_version(const char *root_dir) |
| 842 | { |
| 843 | char version[PATH_MAX]; |
| 844 | FILE *file; |
| 845 | char *name, *tmp; |
| 846 | const char *prefix = "Linux version "; |
| 847 | |
| 848 | sprintf(version, "%s/proc/version", root_dir); |
| 849 | file = fopen(version, "r"); |
| 850 | if (!file) |
| 851 | return NULL; |
| 852 | |
| 853 | version[0] = '\0'; |
| 854 | tmp = fgets(version, sizeof(version), file); |
| 855 | fclose(file); |
| 856 | |
| 857 | name = strstr(version, prefix); |
| 858 | if (!name) |
| 859 | return NULL; |
| 860 | name += strlen(prefix); |
| 861 | tmp = strchr(name, ' '); |
| 862 | if (tmp) |
| 863 | *tmp = '\0'; |
| 864 | |
| 865 | return strdup(name); |
| 866 | } |
| 867 | |
Jiri Olsa | bb58a8a | 2015-02-12 22:20:01 +0100 | [diff] [blame] | 868 | static bool is_kmod_dso(struct dso *dso) |
| 869 | { |
| 870 | return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE || |
| 871 | dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE; |
| 872 | } |
| 873 | |
| 874 | static int map_groups__set_module_path(struct map_groups *mg, const char *path, |
| 875 | struct kmod_path *m) |
| 876 | { |
| 877 | struct map *map; |
| 878 | char *long_name; |
| 879 | |
| 880 | map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name); |
| 881 | if (map == NULL) |
| 882 | return 0; |
| 883 | |
| 884 | long_name = strdup(path); |
| 885 | if (long_name == NULL) |
| 886 | return -ENOMEM; |
| 887 | |
| 888 | dso__set_long_name(map->dso, long_name, true); |
| 889 | dso__kernel_module_get_build_id(map->dso, ""); |
| 890 | |
| 891 | /* |
| 892 | * Full name could reveal us kmod compression, so |
| 893 | * we need to update the symtab_type if needed. |
| 894 | */ |
| 895 | if (m->comp && is_kmod_dso(map->dso)) |
| 896 | map->dso->symtab_type++; |
| 897 | |
| 898 | return 0; |
| 899 | } |
| 900 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 901 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
Richard Yao | 61d4290 | 2014-04-26 13:17:55 -0400 | [diff] [blame] | 902 | const char *dir_name, int depth) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 903 | { |
| 904 | struct dirent *dent; |
| 905 | DIR *dir = opendir(dir_name); |
| 906 | int ret = 0; |
| 907 | |
| 908 | if (!dir) { |
| 909 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); |
| 910 | return -1; |
| 911 | } |
| 912 | |
| 913 | while ((dent = readdir(dir)) != NULL) { |
| 914 | char path[PATH_MAX]; |
| 915 | struct stat st; |
| 916 | |
| 917 | /*sshfs might return bad dent->d_type, so we have to stat*/ |
| 918 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); |
| 919 | if (stat(path, &st)) |
| 920 | continue; |
| 921 | |
| 922 | if (S_ISDIR(st.st_mode)) { |
| 923 | if (!strcmp(dent->d_name, ".") || |
| 924 | !strcmp(dent->d_name, "..")) |
| 925 | continue; |
| 926 | |
Richard Yao | 61d4290 | 2014-04-26 13:17:55 -0400 | [diff] [blame] | 927 | /* Do not follow top-level source and build symlinks */ |
| 928 | if (depth == 0) { |
| 929 | if (!strcmp(dent->d_name, "source") || |
| 930 | !strcmp(dent->d_name, "build")) |
| 931 | continue; |
| 932 | } |
| 933 | |
| 934 | ret = map_groups__set_modules_path_dir(mg, path, |
| 935 | depth + 1); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 936 | if (ret < 0) |
| 937 | goto out; |
| 938 | } else { |
Jiri Olsa | bb58a8a | 2015-02-12 22:20:01 +0100 | [diff] [blame] | 939 | struct kmod_path m; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 940 | |
Jiri Olsa | bb58a8a | 2015-02-12 22:20:01 +0100 | [diff] [blame] | 941 | ret = kmod_path__parse_name(&m, dent->d_name); |
| 942 | if (ret) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 943 | goto out; |
Jiri Olsa | bb58a8a | 2015-02-12 22:20:01 +0100 | [diff] [blame] | 944 | |
| 945 | if (m.kmod) |
| 946 | ret = map_groups__set_module_path(mg, path, &m); |
| 947 | |
| 948 | free(m.name); |
| 949 | |
| 950 | if (ret) |
| 951 | goto out; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 952 | } |
| 953 | } |
| 954 | |
| 955 | out: |
| 956 | closedir(dir); |
| 957 | return ret; |
| 958 | } |
| 959 | |
| 960 | static int machine__set_modules_path(struct machine *machine) |
| 961 | { |
| 962 | char *version; |
| 963 | char modules_path[PATH_MAX]; |
| 964 | |
| 965 | version = get_kernel_version(machine->root_dir); |
| 966 | if (!version) |
| 967 | return -1; |
| 968 | |
Richard Yao | 61d4290 | 2014-04-26 13:17:55 -0400 | [diff] [blame] | 969 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s", |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 970 | machine->root_dir, version); |
| 971 | free(version); |
| 972 | |
Richard Yao | 61d4290 | 2014-04-26 13:17:55 -0400 | [diff] [blame] | 973 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 974 | } |
| 975 | |
Adrian Hunter | 316d70d | 2013-10-08 11:45:48 +0300 | [diff] [blame] | 976 | static int machine__create_module(void *arg, const char *name, u64 start) |
| 977 | { |
| 978 | struct machine *machine = arg; |
| 979 | struct map *map; |
| 980 | |
| 981 | map = machine__new_module(machine, start, name); |
| 982 | if (map == NULL) |
| 983 | return -1; |
| 984 | |
| 985 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); |
| 986 | |
| 987 | return 0; |
| 988 | } |
| 989 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 990 | static int machine__create_modules(struct machine *machine) |
| 991 | { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 992 | const char *modules; |
| 993 | char path[PATH_MAX]; |
| 994 | |
Adrian Hunter | f4be904 | 2013-09-22 13:22:09 +0300 | [diff] [blame] | 995 | if (machine__is_default_guest(machine)) { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 996 | modules = symbol_conf.default_guest_modules; |
Adrian Hunter | f4be904 | 2013-09-22 13:22:09 +0300 | [diff] [blame] | 997 | } else { |
| 998 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 999 | modules = path; |
| 1000 | } |
| 1001 | |
Adrian Hunter | aa7fe3b | 2013-09-22 13:22:09 +0300 | [diff] [blame] | 1002 | if (symbol__restricted_filename(modules, "/proc/modules")) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1003 | return -1; |
| 1004 | |
Adrian Hunter | 316d70d | 2013-10-08 11:45:48 +0300 | [diff] [blame] | 1005 | if (modules__parse(modules, machine, machine__create_module)) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1006 | return -1; |
| 1007 | |
Adrian Hunter | 316d70d | 2013-10-08 11:45:48 +0300 | [diff] [blame] | 1008 | if (!machine__set_modules_path(machine)) |
| 1009 | return 0; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1010 | |
Adrian Hunter | 316d70d | 2013-10-08 11:45:48 +0300 | [diff] [blame] | 1011 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1012 | |
Jason Wessel | 8f76fcd | 2013-07-15 15:27:53 -0500 | [diff] [blame] | 1013 | return 0; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | int machine__create_kernel_maps(struct machine *machine) |
| 1017 | { |
| 1018 | struct dso *kernel = machine__get_kernel(machine); |
Adrian Hunter | 5512cf2 | 2014-01-29 16:14:39 +0200 | [diff] [blame] | 1019 | const char *name; |
Adrian Hunter | 4b99375 | 2014-08-15 22:08:38 +0300 | [diff] [blame] | 1020 | u64 addr = machine__get_running_kernel_start(machine, &name); |
Adrian Hunter | 5512cf2 | 2014-01-29 16:14:39 +0200 | [diff] [blame] | 1021 | if (!addr) |
| 1022 | return -1; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1023 | |
| 1024 | if (kernel == NULL || |
| 1025 | __machine__create_kernel_maps(machine, kernel) < 0) |
| 1026 | return -1; |
| 1027 | |
| 1028 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { |
| 1029 | if (machine__is_host(machine)) |
| 1030 | pr_debug("Problems creating module maps, " |
| 1031 | "continuing anyway...\n"); |
| 1032 | else |
| 1033 | pr_debug("Problems creating module maps for guest %d, " |
| 1034 | "continuing anyway...\n", machine->pid); |
| 1035 | } |
| 1036 | |
| 1037 | /* |
| 1038 | * Now that we have all the maps created, just set the ->end of them: |
| 1039 | */ |
| 1040 | map_groups__fixup_end(&machine->kmaps); |
Adrian Hunter | 5512cf2 | 2014-01-29 16:14:39 +0200 | [diff] [blame] | 1041 | |
| 1042 | if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, |
| 1043 | addr)) { |
| 1044 | machine__destroy_kernel_maps(machine); |
| 1045 | return -1; |
| 1046 | } |
| 1047 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1048 | return 0; |
| 1049 | } |
| 1050 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1051 | static void machine__set_kernel_mmap_len(struct machine *machine, |
| 1052 | union perf_event *event) |
| 1053 | { |
Namhyung Kim | 4552cf0f | 2012-11-07 16:27:10 +0900 | [diff] [blame] | 1054 | int i; |
| 1055 | |
| 1056 | for (i = 0; i < MAP__NR_TYPES; i++) { |
| 1057 | machine->vmlinux_maps[i]->start = event->mmap.start; |
| 1058 | machine->vmlinux_maps[i]->end = (event->mmap.start + |
| 1059 | event->mmap.len); |
| 1060 | /* |
| 1061 | * Be a bit paranoid here, some perf.data file came with |
| 1062 | * a zero sized synthesized MMAP event for the kernel. |
| 1063 | */ |
| 1064 | if (machine->vmlinux_maps[i]->end == 0) |
| 1065 | machine->vmlinux_maps[i]->end = ~0ULL; |
| 1066 | } |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1067 | } |
| 1068 | |
Adrian Hunter | 8e0cf96 | 2013-08-07 14:38:51 +0300 | [diff] [blame] | 1069 | static bool machine__uses_kcore(struct machine *machine) |
| 1070 | { |
| 1071 | struct dso *dso; |
| 1072 | |
Waiman Long | 8fa7d87 | 2014-09-29 16:07:28 -0400 | [diff] [blame] | 1073 | list_for_each_entry(dso, &machine->kernel_dsos.head, node) { |
Adrian Hunter | 8e0cf96 | 2013-08-07 14:38:51 +0300 | [diff] [blame] | 1074 | if (dso__is_kcore(dso)) |
| 1075 | return true; |
| 1076 | } |
| 1077 | |
| 1078 | return false; |
| 1079 | } |
| 1080 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1081 | static int machine__process_kernel_mmap_event(struct machine *machine, |
| 1082 | union perf_event *event) |
| 1083 | { |
| 1084 | struct map *map; |
| 1085 | char kmmap_prefix[PATH_MAX]; |
| 1086 | enum dso_kernel_type kernel_type; |
| 1087 | bool is_kernel_mmap; |
| 1088 | |
Adrian Hunter | 8e0cf96 | 2013-08-07 14:38:51 +0300 | [diff] [blame] | 1089 | /* If we have maps from kcore then we do not need or want any others */ |
| 1090 | if (machine__uses_kcore(machine)) |
| 1091 | return 0; |
| 1092 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1093 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
| 1094 | if (machine__is_host(machine)) |
| 1095 | kernel_type = DSO_TYPE_KERNEL; |
| 1096 | else |
| 1097 | kernel_type = DSO_TYPE_GUEST_KERNEL; |
| 1098 | |
| 1099 | is_kernel_mmap = memcmp(event->mmap.filename, |
| 1100 | kmmap_prefix, |
| 1101 | strlen(kmmap_prefix) - 1) == 0; |
| 1102 | if (event->mmap.filename[0] == '/' || |
| 1103 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1104 | map = machine__new_module(machine, event->mmap.start, |
| 1105 | event->mmap.filename); |
| 1106 | if (map == NULL) |
| 1107 | goto out_problem; |
| 1108 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1109 | map->end = map->start + event->mmap.len; |
| 1110 | } else if (is_kernel_mmap) { |
| 1111 | const char *symbol_name = (event->mmap.filename + |
| 1112 | strlen(kmmap_prefix)); |
| 1113 | /* |
| 1114 | * Should be there already, from the build-id table in |
| 1115 | * the header. |
| 1116 | */ |
Namhyung Kim | b837a8b | 2014-11-04 10:14:33 +0900 | [diff] [blame] | 1117 | struct dso *kernel = NULL; |
| 1118 | struct dso *dso; |
| 1119 | |
| 1120 | list_for_each_entry(dso, &machine->kernel_dsos.head, node) { |
Jiri Olsa | e746b3e | 2015-02-12 22:16:34 +0100 | [diff] [blame] | 1121 | if (is_kernel_module(dso->long_name)) |
Namhyung Kim | b837a8b | 2014-11-04 10:14:33 +0900 | [diff] [blame] | 1122 | continue; |
| 1123 | |
| 1124 | kernel = dso; |
| 1125 | break; |
| 1126 | } |
| 1127 | |
| 1128 | if (kernel == NULL) |
| 1129 | kernel = __dsos__findnew(&machine->kernel_dsos, |
| 1130 | kmmap_prefix); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1131 | if (kernel == NULL) |
| 1132 | goto out_problem; |
| 1133 | |
| 1134 | kernel->kernel = kernel_type; |
| 1135 | if (__machine__create_kernel_maps(machine, kernel) < 0) |
| 1136 | goto out_problem; |
| 1137 | |
Namhyung Kim | 330dfa2 | 2014-11-18 13:30:28 +0900 | [diff] [blame] | 1138 | if (strstr(kernel->long_name, "vmlinux")) |
| 1139 | dso__set_short_name(kernel, "[kernel.vmlinux]", false); |
Namhyung Kim | 96d7805 | 2014-11-04 10:14:34 +0900 | [diff] [blame] | 1140 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1141 | machine__set_kernel_mmap_len(machine, event); |
| 1142 | |
| 1143 | /* |
| 1144 | * Avoid using a zero address (kptr_restrict) for the ref reloc |
| 1145 | * symbol. Effectively having zero here means that at record |
| 1146 | * time /proc/sys/kernel/kptr_restrict was non zero. |
| 1147 | */ |
| 1148 | if (event->mmap.pgoff != 0) { |
| 1149 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, |
| 1150 | symbol_name, |
| 1151 | event->mmap.pgoff); |
| 1152 | } |
| 1153 | |
| 1154 | if (machine__is_default_guest(machine)) { |
| 1155 | /* |
| 1156 | * preload dso of guest kernel and modules |
| 1157 | */ |
| 1158 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], |
| 1159 | NULL); |
| 1160 | } |
| 1161 | } |
| 1162 | return 0; |
| 1163 | out_problem: |
| 1164 | return -1; |
| 1165 | } |
| 1166 | |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1167 | int machine__process_mmap2_event(struct machine *machine, |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1168 | union perf_event *event, |
| 1169 | struct perf_sample *sample __maybe_unused) |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1170 | { |
| 1171 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
| 1172 | struct thread *thread; |
| 1173 | struct map *map; |
| 1174 | enum map_type type; |
| 1175 | int ret = 0; |
| 1176 | |
| 1177 | if (dump_trace) |
| 1178 | perf_event__fprintf_mmap2(event, stdout); |
| 1179 | |
| 1180 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
| 1181 | cpumode == PERF_RECORD_MISC_KERNEL) { |
| 1182 | ret = machine__process_kernel_mmap_event(machine, event); |
| 1183 | if (ret < 0) |
| 1184 | goto out_problem; |
| 1185 | return 0; |
| 1186 | } |
| 1187 | |
| 1188 | thread = machine__findnew_thread(machine, event->mmap2.pid, |
Don Zickus | 11c9abf | 2014-02-26 10:45:27 -0500 | [diff] [blame] | 1189 | event->mmap2.tid); |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1190 | if (thread == NULL) |
| 1191 | goto out_problem; |
| 1192 | |
| 1193 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) |
| 1194 | type = MAP__VARIABLE; |
| 1195 | else |
| 1196 | type = MAP__FUNCTION; |
| 1197 | |
Adrian Hunter | 2a03068 | 2014-07-22 16:17:53 +0300 | [diff] [blame] | 1198 | map = map__new(machine, event->mmap2.start, |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1199 | event->mmap2.len, event->mmap2.pgoff, |
| 1200 | event->mmap2.pid, event->mmap2.maj, |
| 1201 | event->mmap2.min, event->mmap2.ino, |
| 1202 | event->mmap2.ino_generation, |
Don Zickus | 7ef8070 | 2014-05-19 15:13:49 -0400 | [diff] [blame] | 1203 | event->mmap2.prot, |
| 1204 | event->mmap2.flags, |
Adrian Hunter | 5835edd | 2014-07-22 16:18:00 +0300 | [diff] [blame] | 1205 | event->mmap2.filename, type, thread); |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1206 | |
| 1207 | if (map == NULL) |
| 1208 | goto out_problem; |
| 1209 | |
| 1210 | thread__insert_map(thread, map); |
| 1211 | return 0; |
| 1212 | |
| 1213 | out_problem: |
| 1214 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); |
| 1215 | return 0; |
| 1216 | } |
| 1217 | |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1218 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
| 1219 | struct perf_sample *sample __maybe_unused) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1220 | { |
| 1221 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
| 1222 | struct thread *thread; |
| 1223 | struct map *map; |
Stephane Eranian | bad4091 | 2013-01-24 16:10:40 +0100 | [diff] [blame] | 1224 | enum map_type type; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1225 | int ret = 0; |
| 1226 | |
| 1227 | if (dump_trace) |
| 1228 | perf_event__fprintf_mmap(event, stdout); |
| 1229 | |
| 1230 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
| 1231 | cpumode == PERF_RECORD_MISC_KERNEL) { |
| 1232 | ret = machine__process_kernel_mmap_event(machine, event); |
| 1233 | if (ret < 0) |
| 1234 | goto out_problem; |
| 1235 | return 0; |
| 1236 | } |
| 1237 | |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 1238 | thread = machine__findnew_thread(machine, event->mmap.pid, |
Don Zickus | 11c9abf | 2014-02-26 10:45:27 -0500 | [diff] [blame] | 1239 | event->mmap.tid); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1240 | if (thread == NULL) |
| 1241 | goto out_problem; |
Stephane Eranian | bad4091 | 2013-01-24 16:10:40 +0100 | [diff] [blame] | 1242 | |
| 1243 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) |
| 1244 | type = MAP__VARIABLE; |
| 1245 | else |
| 1246 | type = MAP__FUNCTION; |
| 1247 | |
Adrian Hunter | 2a03068 | 2014-07-22 16:17:53 +0300 | [diff] [blame] | 1248 | map = map__new(machine, event->mmap.start, |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1249 | event->mmap.len, event->mmap.pgoff, |
Don Zickus | 7ef8070 | 2014-05-19 15:13:49 -0400 | [diff] [blame] | 1250 | event->mmap.pid, 0, 0, 0, 0, 0, 0, |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1251 | event->mmap.filename, |
Adrian Hunter | 5835edd | 2014-07-22 16:18:00 +0300 | [diff] [blame] | 1252 | type, thread); |
Stephane Eranian | bad4091 | 2013-01-24 16:10:40 +0100 | [diff] [blame] | 1253 | |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1254 | if (map == NULL) |
| 1255 | goto out_problem; |
| 1256 | |
| 1257 | thread__insert_map(thread, map); |
| 1258 | return 0; |
| 1259 | |
| 1260 | out_problem: |
| 1261 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); |
| 1262 | return 0; |
| 1263 | } |
| 1264 | |
He Kuang | 5e78c69 | 2015-04-10 17:35:00 +0800 | [diff] [blame] | 1265 | void machine__remove_thread(struct machine *machine, struct thread *th) |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1266 | { |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 1267 | if (machine->last_match == th) |
| 1268 | thread__zput(machine->last_match); |
| 1269 | |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1270 | rb_erase(&th->rb_node, &machine->threads); |
| 1271 | /* |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 1272 | * Move it first to the dead_threads list, then drop the reference, |
| 1273 | * if this is the last reference, then the thread__delete destructor |
| 1274 | * will be called and we will remove it from the dead_threads list. |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1275 | */ |
| 1276 | list_add_tail(&th->node, &machine->dead_threads); |
Arnaldo Carvalho de Melo | f3b623b | 2015-03-02 22:21:35 -0300 | [diff] [blame] | 1277 | thread__put(th); |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1278 | } |
| 1279 | |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1280 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
| 1281 | struct perf_sample *sample) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1282 | { |
Jiri Olsa | d75e609 | 2014-03-14 15:00:03 +0100 | [diff] [blame] | 1283 | struct thread *thread = machine__find_thread(machine, |
| 1284 | event->fork.pid, |
| 1285 | event->fork.tid); |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 1286 | struct thread *parent = machine__findnew_thread(machine, |
| 1287 | event->fork.ppid, |
| 1288 | event->fork.ptid); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1289 | |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1290 | /* if a thread currently exists for the thread id remove it */ |
| 1291 | if (thread != NULL) |
| 1292 | machine__remove_thread(machine, thread); |
| 1293 | |
Adrian Hunter | 314add6 | 2013-08-27 11:23:03 +0300 | [diff] [blame] | 1294 | thread = machine__findnew_thread(machine, event->fork.pid, |
| 1295 | event->fork.tid); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1296 | if (dump_trace) |
| 1297 | perf_event__fprintf_task(event, stdout); |
| 1298 | |
| 1299 | if (thread == NULL || parent == NULL || |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1300 | thread__fork(thread, parent, sample->time) < 0) { |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1301 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
| 1302 | return -1; |
| 1303 | } |
| 1304 | |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1308 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
| 1309 | struct perf_sample *sample __maybe_unused) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1310 | { |
Jiri Olsa | d75e609 | 2014-03-14 15:00:03 +0100 | [diff] [blame] | 1311 | struct thread *thread = machine__find_thread(machine, |
| 1312 | event->fork.pid, |
| 1313 | event->fork.tid); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1314 | |
| 1315 | if (dump_trace) |
| 1316 | perf_event__fprintf_task(event, stdout); |
| 1317 | |
| 1318 | if (thread != NULL) |
David Ahern | 236a3bb | 2013-08-14 08:49:27 -0600 | [diff] [blame] | 1319 | thread__exited(thread); |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1320 | |
| 1321 | return 0; |
| 1322 | } |
| 1323 | |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1324 | int machine__process_event(struct machine *machine, union perf_event *event, |
| 1325 | struct perf_sample *sample) |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1326 | { |
| 1327 | int ret; |
| 1328 | |
| 1329 | switch (event->header.type) { |
| 1330 | case PERF_RECORD_COMM: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1331 | ret = machine__process_comm_event(machine, event, sample); break; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1332 | case PERF_RECORD_MMAP: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1333 | ret = machine__process_mmap_event(machine, event, sample); break; |
Stephane Eranian | 5c5e854 | 2013-08-21 12:10:25 +0200 | [diff] [blame] | 1334 | case PERF_RECORD_MMAP2: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1335 | ret = machine__process_mmap2_event(machine, event, sample); break; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1336 | case PERF_RECORD_FORK: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1337 | ret = machine__process_fork_event(machine, event, sample); break; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1338 | case PERF_RECORD_EXIT: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1339 | ret = machine__process_exit_event(machine, event, sample); break; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1340 | case PERF_RECORD_LOST: |
Frederic Weisbecker | 162f0be | 2013-09-11 16:18:24 +0200 | [diff] [blame] | 1341 | ret = machine__process_lost_event(machine, event, sample); break; |
Adrian Hunter | 4a96f7a | 2015-04-30 17:37:29 +0300 | [diff] [blame^] | 1342 | case PERF_RECORD_AUX: |
| 1343 | ret = machine__process_aux_event(machine, event); break; |
Arnaldo Carvalho de Melo | b0a7d1a | 2012-10-06 16:26:02 -0300 | [diff] [blame] | 1344 | default: |
| 1345 | ret = -1; |
| 1346 | break; |
| 1347 | } |
| 1348 | |
| 1349 | return ret; |
| 1350 | } |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1351 | |
Greg Price | b21484f | 2012-12-06 21:48:05 -0800 | [diff] [blame] | 1352 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1353 | { |
Greg Price | b21484f | 2012-12-06 21:48:05 -0800 | [diff] [blame] | 1354 | if (sym->name && !regexec(regex, sym->name, 0, NULL, 0)) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1355 | return 1; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1356 | return 0; |
| 1357 | } |
| 1358 | |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1359 | static void ip__resolve_ams(struct thread *thread, |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1360 | struct addr_map_symbol *ams, |
| 1361 | u64 ip) |
| 1362 | { |
| 1363 | struct addr_location al; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1364 | |
| 1365 | memset(&al, 0, sizeof(al)); |
Arnaldo Carvalho de Melo | 52a3cb8 | 2014-03-11 16:16:49 -0300 | [diff] [blame] | 1366 | /* |
| 1367 | * We cannot use the header.misc hint to determine whether a |
| 1368 | * branch stack address is user, kernel, guest, hypervisor. |
| 1369 | * Branches may straddle the kernel/user/hypervisor boundaries. |
| 1370 | * Thus, we have to try consecutively until we find a match |
| 1371 | * or else, the symbol is unknown |
| 1372 | */ |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1373 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1374 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1375 | ams->addr = ip; |
| 1376 | ams->al_addr = al.addr; |
| 1377 | ams->sym = al.sym; |
| 1378 | ams->map = al.map; |
| 1379 | } |
| 1380 | |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1381 | static void ip__resolve_data(struct thread *thread, |
Stephane Eranian | 98a3b32 | 2013-01-24 16:10:35 +0100 | [diff] [blame] | 1382 | u8 m, struct addr_map_symbol *ams, u64 addr) |
| 1383 | { |
| 1384 | struct addr_location al; |
| 1385 | |
| 1386 | memset(&al, 0, sizeof(al)); |
| 1387 | |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1388 | thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al); |
Don Zickus | 06b2afc | 2014-08-20 23:25:11 -0400 | [diff] [blame] | 1389 | if (al.map == NULL) { |
| 1390 | /* |
| 1391 | * some shared data regions have execute bit set which puts |
| 1392 | * their mapping in the MAP__FUNCTION type array. |
| 1393 | * Check there as a fallback option before dropping the sample. |
| 1394 | */ |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1395 | thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al); |
Don Zickus | 06b2afc | 2014-08-20 23:25:11 -0400 | [diff] [blame] | 1396 | } |
| 1397 | |
Stephane Eranian | 98a3b32 | 2013-01-24 16:10:35 +0100 | [diff] [blame] | 1398 | ams->addr = addr; |
| 1399 | ams->al_addr = al.addr; |
| 1400 | ams->sym = al.sym; |
| 1401 | ams->map = al.map; |
| 1402 | } |
| 1403 | |
Arnaldo Carvalho de Melo | e80faac | 2014-01-22 13:05:06 -0300 | [diff] [blame] | 1404 | struct mem_info *sample__resolve_mem(struct perf_sample *sample, |
| 1405 | struct addr_location *al) |
Stephane Eranian | 98a3b32 | 2013-01-24 16:10:35 +0100 | [diff] [blame] | 1406 | { |
| 1407 | struct mem_info *mi = zalloc(sizeof(*mi)); |
| 1408 | |
| 1409 | if (!mi) |
| 1410 | return NULL; |
| 1411 | |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1412 | ip__resolve_ams(al->thread, &mi->iaddr, sample->ip); |
| 1413 | ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr); |
Stephane Eranian | 98a3b32 | 2013-01-24 16:10:35 +0100 | [diff] [blame] | 1414 | mi->data_src.val = sample->data_src; |
| 1415 | |
| 1416 | return mi; |
| 1417 | } |
| 1418 | |
Andi Kleen | 37592b8 | 2014-11-12 18:05:19 -0800 | [diff] [blame] | 1419 | static int add_callchain_ip(struct thread *thread, |
| 1420 | struct symbol **parent, |
| 1421 | struct addr_location *root_al, |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1422 | u8 *cpumode, |
Andi Kleen | 37592b8 | 2014-11-12 18:05:19 -0800 | [diff] [blame] | 1423 | u64 ip) |
| 1424 | { |
| 1425 | struct addr_location al; |
| 1426 | |
| 1427 | al.filtered = 0; |
| 1428 | al.sym = NULL; |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1429 | if (!cpumode) { |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1430 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, |
| 1431 | ip, &al); |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1432 | } else { |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1433 | if (ip >= PERF_CONTEXT_MAX) { |
| 1434 | switch (ip) { |
| 1435 | case PERF_CONTEXT_HV: |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1436 | *cpumode = PERF_RECORD_MISC_HYPERVISOR; |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1437 | break; |
| 1438 | case PERF_CONTEXT_KERNEL: |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1439 | *cpumode = PERF_RECORD_MISC_KERNEL; |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1440 | break; |
| 1441 | case PERF_CONTEXT_USER: |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1442 | *cpumode = PERF_RECORD_MISC_USER; |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1443 | break; |
| 1444 | default: |
| 1445 | pr_debug("invalid callchain context: " |
| 1446 | "%"PRId64"\n", (s64) ip); |
| 1447 | /* |
| 1448 | * It seems the callchain is corrupted. |
| 1449 | * Discard all. |
| 1450 | */ |
| 1451 | callchain_cursor_reset(&callchain_cursor); |
| 1452 | return 1; |
| 1453 | } |
| 1454 | return 0; |
| 1455 | } |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1456 | thread__find_addr_location(thread, *cpumode, MAP__FUNCTION, |
| 1457 | ip, &al); |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1458 | } |
| 1459 | |
Andi Kleen | 37592b8 | 2014-11-12 18:05:19 -0800 | [diff] [blame] | 1460 | if (al.sym != NULL) { |
| 1461 | if (sort__has_parent && !*parent && |
| 1462 | symbol__match_regex(al.sym, &parent_regex)) |
| 1463 | *parent = al.sym; |
| 1464 | else if (have_ignore_callees && root_al && |
| 1465 | symbol__match_regex(al.sym, &ignore_callees_regex)) { |
| 1466 | /* Treat this symbol as the root, |
| 1467 | forgetting its callees. */ |
| 1468 | *root_al = al; |
| 1469 | callchain_cursor_reset(&callchain_cursor); |
| 1470 | } |
| 1471 | } |
| 1472 | |
Andi Kleen | 5550171 | 2014-11-12 18:05:21 -0800 | [diff] [blame] | 1473 | return callchain_cursor_append(&callchain_cursor, al.addr, al.map, al.sym); |
Andi Kleen | 37592b8 | 2014-11-12 18:05:19 -0800 | [diff] [blame] | 1474 | } |
| 1475 | |
Arnaldo Carvalho de Melo | 644f2df | 2014-01-22 13:15:36 -0300 | [diff] [blame] | 1476 | struct branch_info *sample__resolve_bstack(struct perf_sample *sample, |
| 1477 | struct addr_location *al) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1478 | { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1479 | unsigned int i; |
Arnaldo Carvalho de Melo | 644f2df | 2014-01-22 13:15:36 -0300 | [diff] [blame] | 1480 | const struct branch_stack *bs = sample->branch_stack; |
| 1481 | struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info)); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1482 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1483 | if (!bi) |
| 1484 | return NULL; |
| 1485 | |
| 1486 | for (i = 0; i < bs->nr; i++) { |
Arnaldo Carvalho de Melo | bb871a9 | 2014-10-23 12:50:25 -0300 | [diff] [blame] | 1487 | ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to); |
| 1488 | ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1489 | bi[i].flags = bs->entries[i].flags; |
| 1490 | } |
| 1491 | return bi; |
| 1492 | } |
| 1493 | |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1494 | #define CHASHSZ 127 |
| 1495 | #define CHASHBITS 7 |
| 1496 | #define NO_ENTRY 0xff |
| 1497 | |
| 1498 | #define PERF_MAX_BRANCH_DEPTH 127 |
| 1499 | |
| 1500 | /* Remove loops. */ |
| 1501 | static int remove_loops(struct branch_entry *l, int nr) |
| 1502 | { |
| 1503 | int i, j, off; |
| 1504 | unsigned char chash[CHASHSZ]; |
| 1505 | |
| 1506 | memset(chash, NO_ENTRY, sizeof(chash)); |
| 1507 | |
| 1508 | BUG_ON(PERF_MAX_BRANCH_DEPTH > 255); |
| 1509 | |
| 1510 | for (i = 0; i < nr; i++) { |
| 1511 | int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ; |
| 1512 | |
| 1513 | /* no collision handling for now */ |
| 1514 | if (chash[h] == NO_ENTRY) { |
| 1515 | chash[h] = i; |
| 1516 | } else if (l[chash[h]].from == l[i].from) { |
| 1517 | bool is_loop = true; |
| 1518 | /* check if it is a real loop */ |
| 1519 | off = 0; |
| 1520 | for (j = chash[h]; j < i && i + off < nr; j++, off++) |
| 1521 | if (l[j].from != l[i + off].from) { |
| 1522 | is_loop = false; |
| 1523 | break; |
| 1524 | } |
| 1525 | if (is_loop) { |
| 1526 | memmove(l + i, l + i + off, |
| 1527 | (nr - (i + off)) * sizeof(*l)); |
| 1528 | nr -= off; |
| 1529 | } |
| 1530 | } |
| 1531 | } |
| 1532 | return nr; |
| 1533 | } |
| 1534 | |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1535 | /* |
| 1536 | * Recolve LBR callstack chain sample |
| 1537 | * Return: |
| 1538 | * 1 on success get LBR callchain information |
| 1539 | * 0 no available LBR callchain information, should try fp |
| 1540 | * negative error code on other errors. |
| 1541 | */ |
| 1542 | static int resolve_lbr_callchain_sample(struct thread *thread, |
| 1543 | struct perf_sample *sample, |
| 1544 | struct symbol **parent, |
| 1545 | struct addr_location *root_al, |
| 1546 | int max_stack) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1547 | { |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1548 | struct ip_callchain *chain = sample->callchain; |
| 1549 | int chain_nr = min(max_stack, (int)chain->nr); |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1550 | u8 cpumode = PERF_RECORD_MISC_USER; |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1551 | int i, j, err; |
| 1552 | u64 ip; |
| 1553 | |
| 1554 | for (i = 0; i < chain_nr; i++) { |
| 1555 | if (chain->ips[i] == PERF_CONTEXT_USER) |
| 1556 | break; |
| 1557 | } |
| 1558 | |
| 1559 | /* LBR only affects the user callchain */ |
| 1560 | if (i != chain_nr) { |
| 1561 | struct branch_stack *lbr_stack = sample->branch_stack; |
| 1562 | int lbr_nr = lbr_stack->nr; |
| 1563 | /* |
| 1564 | * LBR callstack can only get user call chain. |
| 1565 | * The mix_chain_nr is kernel call chain |
| 1566 | * number plus LBR user call chain number. |
| 1567 | * i is kernel call chain number, |
| 1568 | * 1 is PERF_CONTEXT_USER, |
| 1569 | * lbr_nr + 1 is the user call chain number. |
| 1570 | * For details, please refer to the comments |
| 1571 | * in callchain__printf |
| 1572 | */ |
| 1573 | int mix_chain_nr = i + 1 + lbr_nr + 1; |
| 1574 | |
| 1575 | if (mix_chain_nr > PERF_MAX_STACK_DEPTH + PERF_MAX_BRANCH_DEPTH) { |
| 1576 | pr_warning("corrupted callchain. skipping...\n"); |
| 1577 | return 0; |
| 1578 | } |
| 1579 | |
| 1580 | for (j = 0; j < mix_chain_nr; j++) { |
| 1581 | if (callchain_param.order == ORDER_CALLEE) { |
| 1582 | if (j < i + 1) |
| 1583 | ip = chain->ips[j]; |
| 1584 | else if (j > i + 1) |
| 1585 | ip = lbr_stack->entries[j - i - 2].from; |
| 1586 | else |
| 1587 | ip = lbr_stack->entries[0].to; |
| 1588 | } else { |
| 1589 | if (j < lbr_nr) |
| 1590 | ip = lbr_stack->entries[lbr_nr - j - 1].from; |
| 1591 | else if (j > lbr_nr) |
| 1592 | ip = chain->ips[i + 1 - (j - lbr_nr)]; |
| 1593 | else |
| 1594 | ip = lbr_stack->entries[0].to; |
| 1595 | } |
| 1596 | |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1597 | err = add_callchain_ip(thread, parent, root_al, &cpumode, ip); |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1598 | if (err) |
| 1599 | return (err < 0) ? err : 0; |
| 1600 | } |
| 1601 | return 1; |
| 1602 | } |
| 1603 | |
| 1604 | return 0; |
| 1605 | } |
| 1606 | |
| 1607 | static int thread__resolve_callchain_sample(struct thread *thread, |
| 1608 | struct perf_evsel *evsel, |
| 1609 | struct perf_sample *sample, |
| 1610 | struct symbol **parent, |
| 1611 | struct addr_location *root_al, |
| 1612 | int max_stack) |
| 1613 | { |
| 1614 | struct branch_stack *branch = sample->branch_stack; |
| 1615 | struct ip_callchain *chain = sample->callchain; |
Waiman Long | 91e9561 | 2013-10-18 10:38:48 -0400 | [diff] [blame] | 1616 | int chain_nr = min(max_stack, (int)chain->nr); |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1617 | u8 cpumode = PERF_RECORD_MISC_USER; |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1618 | int i, j, err; |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1619 | int skip_idx = -1; |
| 1620 | int first_call = 0; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1621 | |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1622 | callchain_cursor_reset(&callchain_cursor); |
| 1623 | |
| 1624 | if (has_branch_callstack(evsel)) { |
| 1625 | err = resolve_lbr_callchain_sample(thread, sample, parent, |
| 1626 | root_al, max_stack); |
| 1627 | if (err) |
| 1628 | return (err < 0) ? err : 0; |
| 1629 | } |
| 1630 | |
Sukadev Bhattiprolu | a60335b | 2014-06-25 08:49:03 -0700 | [diff] [blame] | 1631 | /* |
| 1632 | * Based on DWARF debug information, some architectures skip |
| 1633 | * a callchain entry saved by the kernel. |
| 1634 | */ |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1635 | if (chain->nr < PERF_MAX_STACK_DEPTH) |
| 1636 | skip_idx = arch_skip_callchain_idx(thread, chain); |
Sukadev Bhattiprolu | a60335b | 2014-06-25 08:49:03 -0700 | [diff] [blame] | 1637 | |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1638 | /* |
| 1639 | * Add branches to call stack for easier browsing. This gives |
| 1640 | * more context for a sample than just the callers. |
| 1641 | * |
| 1642 | * This uses individual histograms of paths compared to the |
| 1643 | * aggregated histograms the normal LBR mode uses. |
| 1644 | * |
| 1645 | * Limitations for now: |
| 1646 | * - No extra filters |
| 1647 | * - No annotations (should annotate somehow) |
| 1648 | */ |
| 1649 | |
| 1650 | if (branch && callchain_param.branch_callstack) { |
| 1651 | int nr = min(max_stack, (int)branch->nr); |
| 1652 | struct branch_entry be[nr]; |
| 1653 | |
| 1654 | if (branch->nr > PERF_MAX_BRANCH_DEPTH) { |
| 1655 | pr_warning("corrupted branch chain. skipping...\n"); |
| 1656 | goto check_calls; |
| 1657 | } |
| 1658 | |
| 1659 | for (i = 0; i < nr; i++) { |
| 1660 | if (callchain_param.order == ORDER_CALLEE) { |
| 1661 | be[i] = branch->entries[i]; |
| 1662 | /* |
| 1663 | * Check for overlap into the callchain. |
| 1664 | * The return address is one off compared to |
| 1665 | * the branch entry. To adjust for this |
| 1666 | * assume the calling instruction is not longer |
| 1667 | * than 8 bytes. |
| 1668 | */ |
| 1669 | if (i == skip_idx || |
| 1670 | chain->ips[first_call] >= PERF_CONTEXT_MAX) |
| 1671 | first_call++; |
| 1672 | else if (be[i].from < chain->ips[first_call] && |
| 1673 | be[i].from >= chain->ips[first_call] - 8) |
| 1674 | first_call++; |
| 1675 | } else |
| 1676 | be[i] = branch->entries[branch->nr - i - 1]; |
| 1677 | } |
| 1678 | |
| 1679 | nr = remove_loops(be, nr); |
| 1680 | |
| 1681 | for (i = 0; i < nr; i++) { |
| 1682 | err = add_callchain_ip(thread, parent, root_al, |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1683 | NULL, be[i].to); |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1684 | if (!err) |
| 1685 | err = add_callchain_ip(thread, parent, root_al, |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1686 | NULL, be[i].from); |
Andi Kleen | 8b7bad5 | 2014-11-12 18:05:20 -0800 | [diff] [blame] | 1687 | if (err == -EINVAL) |
| 1688 | break; |
| 1689 | if (err) |
| 1690 | return err; |
| 1691 | } |
| 1692 | chain_nr -= nr; |
| 1693 | } |
| 1694 | |
| 1695 | check_calls: |
| 1696 | if (chain->nr > PERF_MAX_STACK_DEPTH) { |
| 1697 | pr_warning("corrupted callchain. skipping...\n"); |
| 1698 | return 0; |
| 1699 | } |
| 1700 | |
| 1701 | for (i = first_call; i < chain_nr; i++) { |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1702 | u64 ip; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1703 | |
| 1704 | if (callchain_param.order == ORDER_CALLEE) |
Sukadev Bhattiprolu | a60335b | 2014-06-25 08:49:03 -0700 | [diff] [blame] | 1705 | j = i; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1706 | else |
Sukadev Bhattiprolu | a60335b | 2014-06-25 08:49:03 -0700 | [diff] [blame] | 1707 | j = chain->nr - i - 1; |
| 1708 | |
| 1709 | #ifdef HAVE_SKIP_CALLCHAIN_IDX |
| 1710 | if (j == skip_idx) |
| 1711 | continue; |
| 1712 | #endif |
| 1713 | ip = chain->ips[j]; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1714 | |
David Hildenbrand | 73dbcd6 | 2015-03-30 10:11:00 +0200 | [diff] [blame] | 1715 | err = add_callchain_ip(thread, parent, root_al, &cpumode, ip); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1716 | |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1717 | if (err) |
Kan Liang | 2e77784 | 2014-12-02 10:06:53 -0500 | [diff] [blame] | 1718 | return (err < 0) ? err : 0; |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1719 | } |
| 1720 | |
| 1721 | return 0; |
| 1722 | } |
| 1723 | |
| 1724 | static int unwind_entry(struct unwind_entry *entry, void *arg) |
| 1725 | { |
| 1726 | struct callchain_cursor *cursor = arg; |
| 1727 | return callchain_cursor_append(cursor, entry->ip, |
| 1728 | entry->map, entry->sym); |
| 1729 | } |
| 1730 | |
Arnaldo Carvalho de Melo | cc8b7c2 | 2014-10-23 15:26:17 -0300 | [diff] [blame] | 1731 | int thread__resolve_callchain(struct thread *thread, |
| 1732 | struct perf_evsel *evsel, |
| 1733 | struct perf_sample *sample, |
| 1734 | struct symbol **parent, |
| 1735 | struct addr_location *root_al, |
| 1736 | int max_stack) |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1737 | { |
Kan Liang | 384b605 | 2015-01-05 13:23:05 -0500 | [diff] [blame] | 1738 | int ret = thread__resolve_callchain_sample(thread, evsel, |
| 1739 | sample, parent, |
| 1740 | root_al, max_stack); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1741 | if (ret) |
| 1742 | return ret; |
| 1743 | |
| 1744 | /* Can we do dwarf post unwind? */ |
| 1745 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && |
| 1746 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) |
| 1747 | return 0; |
| 1748 | |
| 1749 | /* Bail out if nothing was captured. */ |
| 1750 | if ((!sample->user_regs.regs) || |
| 1751 | (!sample->user_stack.size)) |
| 1752 | return 0; |
| 1753 | |
Arnaldo Carvalho de Melo | dd8c17a | 2014-10-23 16:42:19 -0300 | [diff] [blame] | 1754 | return unwind__get_entries(unwind_entry, &callchain_cursor, |
Jiri Olsa | 352ea45 | 2014-01-07 13:47:25 +0100 | [diff] [blame] | 1755 | thread, sample, max_stack); |
Arnaldo Carvalho de Melo | 3f067dc | 2012-12-07 17:39:39 -0300 | [diff] [blame] | 1756 | |
| 1757 | } |
David Ahern | 35feee1 | 2013-09-28 13:12:58 -0600 | [diff] [blame] | 1758 | |
| 1759 | int machine__for_each_thread(struct machine *machine, |
| 1760 | int (*fn)(struct thread *thread, void *p), |
| 1761 | void *priv) |
| 1762 | { |
| 1763 | struct rb_node *nd; |
| 1764 | struct thread *thread; |
| 1765 | int rc = 0; |
| 1766 | |
| 1767 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { |
| 1768 | thread = rb_entry(nd, struct thread, rb_node); |
| 1769 | rc = fn(thread, priv); |
| 1770 | if (rc != 0) |
| 1771 | return rc; |
| 1772 | } |
| 1773 | |
| 1774 | list_for_each_entry(thread, &machine->dead_threads, node) { |
| 1775 | rc = fn(thread, priv); |
| 1776 | if (rc != 0) |
| 1777 | return rc; |
| 1778 | } |
| 1779 | return rc; |
| 1780 | } |
Arnaldo Carvalho de Melo | 58d925d | 2013-11-11 11:28:02 -0300 | [diff] [blame] | 1781 | |
Arnaldo Carvalho de Melo | a33fbd5 | 2013-11-11 11:36:12 -0300 | [diff] [blame] | 1782 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1783 | struct target *target, struct thread_map *threads, |
Arnaldo Carvalho de Melo | a33fbd5 | 2013-11-11 11:36:12 -0300 | [diff] [blame] | 1784 | perf_event__handler_t process, bool data_mmap) |
Arnaldo Carvalho de Melo | 58d925d | 2013-11-11 11:28:02 -0300 | [diff] [blame] | 1785 | { |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1786 | if (target__has_task(target)) |
Arnaldo Carvalho de Melo | 58d925d | 2013-11-11 11:28:02 -0300 | [diff] [blame] | 1787 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap); |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1788 | else if (target__has_cpu(target)) |
Arnaldo Carvalho de Melo | 58d925d | 2013-11-11 11:28:02 -0300 | [diff] [blame] | 1789 | return perf_event__synthesize_threads(tool, process, machine, data_mmap); |
| 1790 | /* command specified */ |
| 1791 | return 0; |
| 1792 | } |
Adrian Hunter | b9d266b | 2014-07-22 16:17:25 +0300 | [diff] [blame] | 1793 | |
| 1794 | pid_t machine__get_current_tid(struct machine *machine, int cpu) |
| 1795 | { |
| 1796 | if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid) |
| 1797 | return -1; |
| 1798 | |
| 1799 | return machine->current_tid[cpu]; |
| 1800 | } |
| 1801 | |
| 1802 | int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, |
| 1803 | pid_t tid) |
| 1804 | { |
| 1805 | struct thread *thread; |
| 1806 | |
| 1807 | if (cpu < 0) |
| 1808 | return -EINVAL; |
| 1809 | |
| 1810 | if (!machine->current_tid) { |
| 1811 | int i; |
| 1812 | |
| 1813 | machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t)); |
| 1814 | if (!machine->current_tid) |
| 1815 | return -ENOMEM; |
| 1816 | for (i = 0; i < MAX_NR_CPUS; i++) |
| 1817 | machine->current_tid[i] = -1; |
| 1818 | } |
| 1819 | |
| 1820 | if (cpu >= MAX_NR_CPUS) { |
| 1821 | pr_err("Requested CPU %d too large. ", cpu); |
| 1822 | pr_err("Consider raising MAX_NR_CPUS\n"); |
| 1823 | return -EINVAL; |
| 1824 | } |
| 1825 | |
| 1826 | machine->current_tid[cpu] = tid; |
| 1827 | |
| 1828 | thread = machine__findnew_thread(machine, pid, tid); |
| 1829 | if (!thread) |
| 1830 | return -ENOMEM; |
| 1831 | |
| 1832 | thread->cpu = cpu; |
| 1833 | |
| 1834 | return 0; |
| 1835 | } |
Adrian Hunter | fbe2af4 | 2014-08-15 22:08:39 +0300 | [diff] [blame] | 1836 | |
| 1837 | int machine__get_kernel_start(struct machine *machine) |
| 1838 | { |
| 1839 | struct map *map = machine__kernel_map(machine, MAP__FUNCTION); |
| 1840 | int err = 0; |
| 1841 | |
| 1842 | /* |
| 1843 | * The only addresses above 2^63 are kernel addresses of a 64-bit |
| 1844 | * kernel. Note that addresses are unsigned so that on a 32-bit system |
| 1845 | * all addresses including kernel addresses are less than 2^32. In |
| 1846 | * that case (32-bit system), if the kernel mapping is unknown, all |
| 1847 | * addresses will be assumed to be in user space - see |
| 1848 | * machine__kernel_ip(). |
| 1849 | */ |
| 1850 | machine->kernel_start = 1ULL << 63; |
| 1851 | if (map) { |
| 1852 | err = map__load(map, machine->symbol_filter); |
| 1853 | if (map->start) |
| 1854 | machine->kernel_start = map->start; |
| 1855 | } |
| 1856 | return err; |
| 1857 | } |