SAFE public projects git trees. - safe/jmp/linux-2.6/blob - tools/perf/builtin-report.c

   1 /*
   2  * builtin-report.c
   3  *
   4  * Builtin report command: Analyze the perf.data input file,
   5  * look up and read DSOs and symbol information and display
   6  * a histogram of results, along various sorting keys.
   7  */
   8 #include "builtin.h"
   9
  10 #include "util/util.h"
  11
  12 #include "util/color.h"
  13 #include <linux/list.h>
  14 #include "util/cache.h"
  15 #include <linux/rbtree.h>
  16 #include "util/symbol.h"
  17 #include "util/callchain.h"
  18 #include "util/strlist.h"
  19 #include "util/values.h"
  20
  21 #include "perf.h"
  22 #include "util/debug.h"
  23 #include "util/header.h"
  24 #include "util/session.h"
  25
  26 #include "util/parse-options.h"
  27 #include "util/parse-events.h"
  28
  29 #include "util/thread.h"
  30 #include "util/sort.h"
  31 #include "util/hist.h"
  32
  33 static char             const *input_name = "perf.data";
  34
  35 static bool             force;
  36 static bool             hide_unresolved;
  37 static bool             dont_use_callchains;
  38
  39 static bool             show_threads;
  40 static struct perf_read_values  show_threads_values;
  41
  42 static char             default_pretty_printing_style[] = "normal";
  43 static char             *pretty_printing_style = default_pretty_printing_style;
  44
  45 static char             callchain_default_opt[] = "fractal,0.5";
  46
  47 static struct event_stat_id *get_stats(struct perf_session *self,
  48                                        u64 event_stream, u32 type, u64 config)
  49 {
  50         struct rb_node **p = &self->stats_by_id.rb_node;
  51         struct rb_node *parent = NULL;
  52         struct event_stat_id *iter, *new;
  53
  54         while (*p != NULL) {
  55                 parent = *p;
  56                 iter = rb_entry(parent, struct event_stat_id, rb_node);
  57                 if (iter->config == config)
  58                         return iter;
  59
  60
  61                 if (config > iter->config)
  62                         p = &(*p)->rb_right;
  63                 else
  64                         p = &(*p)->rb_left;
  65         }
  66
  67         new = malloc(sizeof(struct event_stat_id));
  68         if (new == NULL)
  69                 return NULL;
  70         memset(new, 0, sizeof(struct event_stat_id));
  71         new->event_stream = event_stream;
  72         new->config = config;
  73         new->type = type;
  74         rb_link_node(&new->rb_node, parent, p);
  75         rb_insert_color(&new->rb_node, &self->stats_by_id);
  76         return new;
  77 }
  78
  79 static int perf_session__add_hist_entry(struct perf_session *self,
  80                                         struct addr_location *al,
  81                                         struct sample_data *data)
  82 {
  83         struct map_symbol *syms = NULL;
  84         struct symbol *parent = NULL;
  85         int err = -ENOMEM;
  86         struct hist_entry *he;
  87         struct event_stat_id *stats;
  88         struct perf_event_attr *attr;
  89
  90         if ((sort__has_parent || symbol_conf.use_callchain) && data->callchain) {
  91                 syms = perf_session__resolve_callchain(self, al->thread,
  92                                                        data->callchain, &parent);
  93                 if (syms == NULL)
  94                         return -ENOMEM;
  95         }
  96
  97         attr = perf_header__find_attr(data->id, &self->header);
  98         if (attr)
  99                 stats = get_stats(self, data->id, attr->type, attr->config);
 100         else
 101                 stats = get_stats(self, data->id, 0, 0);
 102         if (stats == NULL)
 103                 goto out_free_syms;
 104         he = __perf_session__add_hist_entry(&stats->hists, al, parent,
 105                                             data->period);
 106         if (he == NULL)
 107                 goto out_free_syms;
 108         err = 0;
 109         if (symbol_conf.use_callchain)
 110                 err = append_chain(he->callchain, data->callchain, syms);
 111 out_free_syms:
 112         free(syms);
 113         return err;
 114 }
 115
 116 static int add_event_total(struct perf_session *session,
 117                            struct sample_data *data,
 118                            struct perf_event_attr *attr)
 119 {
 120         struct event_stat_id *stats;
 121
 122         if (attr)
 123                 stats = get_stats(session, data->id, attr->type, attr->config);
 124         else
 125                 stats = get_stats(session, data->id, 0, 0);
 126
 127         if (!stats)
 128                 return -ENOMEM;
 129
 130         stats->stats.total += data->period;
 131         session->events_stats.total += data->period;
 132         return 0;
 133 }
 134
 135 static int process_sample_event(event_t *event, struct perf_session *session)
 136 {
 137         struct sample_data data = { .period = 1, };
 138         struct addr_location al;
 139         struct perf_event_attr *attr;
 140
 141         event__parse_sample(event, session->sample_type, &data);
 142
 143         dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
 144                     data.pid, data.tid, data.ip, data.period);
 145
 146         if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
 147                 unsigned int i;
 148
 149                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
 150
 151                 if (!ip_callchain__valid(data.callchain, event)) {
 152                         pr_debug("call-chain problem with event, "
 153                                  "skipping it.\n");
 154                         return 0;
 155                 }
 156
 157                 if (dump_trace) {
 158                         for (i = 0; i < data.callchain->nr; i++)
 159                                 dump_printf("..... %2d: %016Lx\n",
 160                                             i, data.callchain->ips[i]);
 161                 }
 162         }
 163
 164         if (event__preprocess_sample(event, session, &al, NULL) < 0) {
 165                 fprintf(stderr, "problem processing %d event, skipping it.\n",
 166                         event->header.type);
 167                 return -1;
 168         }
 169
 170         if (al.filtered || (hide_unresolved && al.sym == NULL))
 171                 return 0;
 172
 173         if (perf_session__add_hist_entry(session, &al, &data)) {
 174                 pr_debug("problem incrementing symbol count, skipping event\n");
 175                 return -1;
 176         }
 177
 178         attr = perf_header__find_attr(data.id, &session->header);
 179
 180         if (add_event_total(session, &data, attr)) {
 181                 pr_debug("problem adding event count\n");
 182                 return -1;
 183         }
 184
 185         return 0;
 186 }
 187
 188 static int process_read_event(event_t *event, struct perf_session *session __used)
 189 {
 190         struct perf_event_attr *attr;
 191
 192         attr = perf_header__find_attr(event->read.id, &session->header);
 193
 194         if (show_threads) {
 195                 const char *name = attr ? __event_name(attr->type, attr->config)
 196                                    : "unknown";
 197                 perf_read_values_add_value(&show_threads_values,
 198                                            event->read.pid, event->read.tid,
 199                                            event->read.id,
 200                                            name,
 201                                            event->read.value);
 202         }
 203
 204         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
 205                     attr ? __event_name(attr->type, attr->config) : "FAIL",
 206                     event->read.value);
 207
 208         return 0;
 209 }
 210
 211 static int perf_session__setup_sample_type(struct perf_session *self)
 212 {
 213         if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
 214                 if (sort__has_parent) {
 215                         fprintf(stderr, "selected --sort parent, but no"
 216                                         " callchain data. Did you call"
 217                                         " perf record without -g?\n");
 218                         return -EINVAL;
 219                 }
 220                 if (symbol_conf.use_callchain) {
 221                         fprintf(stderr, "selected -g but no callchain data."
 222                                         " Did you call perf record without"
 223                                         " -g?\n");
 224                         return -1;
 225                 }
 226         } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
 227                    !symbol_conf.use_callchain) {
 228                         symbol_conf.use_callchain = true;
 229                         if (register_callchain_param(&callchain_param) < 0) {
 230                                 fprintf(stderr, "Can't register callchain"
 231                                                 " params\n");
 232                                 return -EINVAL;
 233                         }
 234         }
 235
 236         return 0;
 237 }
 238
 239 static struct perf_event_ops event_ops = {
 240         .sample = process_sample_event,
 241         .mmap   = event__process_mmap,
 242         .comm   = event__process_comm,
 243         .exit   = event__process_task,
 244         .fork   = event__process_task,
 245         .lost   = event__process_lost,
 246         .read   = process_read_event,
 247         .attr   = event__process_attr,
 248         .event_type = event__process_event_type,
 249         .tracing_data = event__process_tracing_data,
 250         .build_id = event__process_build_id,
 251 };
 252
 253 extern volatile int session_done;
 254
 255 static void sig_handler(int sig __attribute__((__unused__)))
 256 {
 257         session_done = 1;
 258 }
 259
 260 static int __cmd_report(void)
 261 {
 262         int ret = -EINVAL;
 263         struct perf_session *session;
 264         struct rb_node *next;
 265         const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 266
 267         signal(SIGINT, sig_handler);
 268
 269         session = perf_session__new(input_name, O_RDONLY, force, false);
 270         if (session == NULL)
 271                 return -ENOMEM;
 272
 273         if (show_threads)
 274                 perf_read_values_init(&show_threads_values);
 275
 276         ret = perf_session__setup_sample_type(session);
 277         if (ret)
 278                 goto out_delete;
 279
 280         ret = perf_session__process_events(session, &event_ops);
 281         if (ret)
 282                 goto out_delete;
 283
 284         if (dump_trace) {
 285                 event__print_totals();
 286                 goto out_delete;
 287         }
 288
 289         if (verbose > 3)
 290                 perf_session__fprintf(session, stdout);
 291
 292         if (verbose > 2)
 293                 perf_session__fprintf_dsos(session, stdout);
 294
 295         next = rb_first(&session->stats_by_id);
 296         while (next) {
 297                 struct event_stat_id *stats;
 298                 u64 nr_hists;
 299
 300                 stats = rb_entry(next, struct event_stat_id, rb_node);
 301                 perf_session__collapse_resort(&stats->hists);
 302                 nr_hists = perf_session__output_resort(&stats->hists,
 303                                                        stats->stats.total);
 304                 if (use_browser)
 305                         perf_session__browse_hists(&stats->hists, nr_hists,
 306                                                    stats->stats.total, help,
 307                                                    input_name);
 308                 else {
 309                         if (rb_first(&session->stats_by_id) ==
 310                             rb_last(&session->stats_by_id))
 311                                 fprintf(stdout, "# Samples: %Ld\n#\n",
 312                                         stats->stats.total);
 313                         else
 314                                 fprintf(stdout, "# Samples: %Ld %s\n#\n",
 315                                         stats->stats.total,
 316                                         __event_name(stats->type, stats->config));
 317
 318                         perf_session__fprintf_hists(&stats->hists, NULL, false, stdout,
 319                                             stats->stats.total);
 320                         fprintf(stdout, "\n\n");
 321                 }
 322
 323                 next = rb_next(&stats->rb_node);
 324         }
 325
 326         if (!use_browser && sort_order == default_sort_order &&
 327             parent_pattern == default_parent_pattern) {
 328                 fprintf(stdout, "#\n# (%s)\n#\n", help);
 329
 330                 if (show_threads) {
 331                         bool style = !strcmp(pretty_printing_style, "raw");
 332                         perf_read_values_display(stdout, &show_threads_values,
 333                                                  style);
 334                         perf_read_values_destroy(&show_threads_values);
 335                 }
 336         }
 337 out_delete:
 338         perf_session__delete(session);
 339         return ret;
 340 }
 341
 342 static int
 343 parse_callchain_opt(const struct option *opt __used, const char *arg,
 344                     int unset)
 345 {
 346         char *tok, *tok2;
 347         char *endptr;
 348
 349         /*
 350          * --no-call-graph
 351          */
 352         if (unset) {
 353                 dont_use_callchains = true;
 354                 return 0;
 355         }
 356
 357         symbol_conf.use_callchain = true;
 358
 359         if (!arg)
 360                 return 0;
 361
 362         tok = strtok((char *)arg, ",");
 363         if (!tok)
 364                 return -1;
 365
 366         /* get the output mode */
 367         if (!strncmp(tok, "graph", strlen(arg)))
 368                 callchain_param.mode = CHAIN_GRAPH_ABS;
 369
 370         else if (!strncmp(tok, "flat", strlen(arg)))
 371                 callchain_param.mode = CHAIN_FLAT;
 372
 373         else if (!strncmp(tok, "fractal", strlen(arg)))
 374                 callchain_param.mode = CHAIN_GRAPH_REL;
 375
 376         else if (!strncmp(tok, "none", strlen(arg))) {
 377                 callchain_param.mode = CHAIN_NONE;
 378                 symbol_conf.use_callchain = false;
 379
 380                 return 0;
 381         }
 382
 383         else
 384                 return -1;
 385
 386         /* get the min percentage */
 387         tok = strtok(NULL, ",");
 388         if (!tok)
 389                 goto setup;
 390
 391         tok2 = strtok(NULL, ",");
 392         callchain_param.min_percent = strtod(tok, &endptr);
 393         if (tok == endptr)
 394                 return -1;
 395
 396         if (tok2)
 397                 callchain_param.print_limit = strtod(tok2, &endptr);
 398 setup:
 399         if (register_callchain_param(&callchain_param) < 0) {
 400                 fprintf(stderr, "Can't register callchain params\n");
 401                 return -1;
 402         }
 403         return 0;
 404 }
 405
 406 static const char * const report_usage[] = {
 407         "perf report [<options>] <command>",
 408         NULL
 409 };
 410
 411 static const struct option options[] = {
 412         OPT_STRING('i', "input", &input_name, "file",
 413                     "input file name"),
 414         OPT_INCR('v', "verbose", &verbose,
 415                     "be more verbose (show symbol address, etc)"),
 416         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 417                     "dump raw trace in ASCII"),
 418         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
 419                    "file", "vmlinux pathname"),
 420         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
 421         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
 422                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
 423         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 424                     "Show a column with the number of samples"),
 425         OPT_BOOLEAN('T', "threads", &show_threads,
 426                     "Show per-thread event counters"),
 427         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
 428                    "pretty printing style key: normal raw"),
 429         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
 430                    "sort by key(s): pid, comm, dso, symbol, parent"),
 431         OPT_BOOLEAN('P', "full-paths", &symbol_conf.full_paths,
 432                     "Don't shorten the pathnames taking into account the cwd"),
 433         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
 434                     "Show sample percentage for different cpu modes"),
 435         OPT_STRING('p', "parent", &parent_pattern, "regex",
 436                    "regex filter to identify parent, see: '--sort parent'"),
 437         OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 438                     "Only display entries with parent-match"),
 439         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
 440                      "Display callchains using output_type (graph, flat, fractal, or none) and min percent threshold. "
 441                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 442         OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 443                    "only consider symbols in these dsos"),
 444         OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
 445                    "only consider symbols in these comms"),
 446         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 447                    "only consider these symbols"),
 448         OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
 449                    "width[,width...]",
 450                    "don't try to adjust column width, use these fixed values"),
 451         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
 452                    "separator for columns, no spaces will be added between "
 453                    "columns '.' is reserved."),
 454         OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved,
 455                     "Only display entries resolved to a symbol"),
 456         OPT_END()
 457 };
 458
 459 int cmd_report(int argc, const char **argv, const char *prefix __used)
 460 {
 461         argc = parse_options(argc, argv, options, report_usage, 0);
 462
 463         if (strcmp(input_name, "-") != 0)
 464                 setup_browser();
 465
 466         if (symbol__init() < 0)
 467                 return -1;
 468
 469         setup_sorting(report_usage, options);
 470
 471         if (parent_pattern != default_parent_pattern) {
 472                 if (sort_dimension__add("parent") < 0)
 473                         return -1;
 474                 sort_parent.elide = 1;
 475         } else
 476                 symbol_conf.exclude_other = false;
 477
 478         /*
 479          * Any (unrecognized) arguments left?
 480          */
 481         if (argc)
 482                 usage_with_options(report_usage, options);
 483
 484         sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
 485         sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
 486         sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
 487
 488         return __cmd_report();
 489 }