tools/perf/ui/gtk/hists.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "../evlist.h"
   3 #include "../cache.h"
   4 #include "../callchain.h"
   5 #include "../evsel.h"
   6 #include "../sort.h"
   7 #include "../hist.h"
   8 #include "../helpline.h"
   9 #include "../string2.h"
  10 #include "gtk.h"
  11 #include <signal.h>
  12
  13 #define MAX_COLUMNS                     32
  14
  15 static int __percent_color_snprintf(struct perf_hpp *hpp, const char *fmt, ...)
  16 {
  17         int ret = 0;
  18         int len;
  19         va_list args;
  20         double percent;
  21         const char *markup;
  22         char *buf = hpp->buf;
  23         size_t size = hpp->size;
  24
  25         va_start(args, fmt);
  26         len = va_arg(args, int);
  27         percent = va_arg(args, double);
  28         va_end(args);
  29
  30         markup = perf_gtk__get_percent_color(percent);
  31         if (markup)
  32                 ret += scnprintf(buf, size, markup);
  33
  34         ret += scnprintf(buf + ret, size - ret, fmt, len, percent);
  35
  36         if (markup)
  37                 ret += scnprintf(buf + ret, size - ret, "</span>");
  38
  39         return ret;
  40 }
  41
  42 #define __HPP_COLOR_PERCENT_FN(_type, _field)                                   \
  43 static u64 he_get_##_field(struct hist_entry *he)                               \
  44 {                                                                               \
  45         return he->stat._field;                                                 \
  46 }                                                                               \
  47                                                                                 \
  48 static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt,                \
  49                                        struct perf_hpp *hpp,                    \
  50                                        struct hist_entry *he)                   \
  51 {                                                                               \
  52         return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",              \
  53                         __percent_color_snprintf, true);                        \
  54 }
  55
  56 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
  57 static u64 he_get_acc_##_field(struct hist_entry *he)                           \
  58 {                                                                               \
  59         return he->stat_acc->_field;                                            \
  60 }                                                                               \
  61                                                                                 \
  62 static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt,                \
  63                                        struct perf_hpp *hpp,                    \
  64                                        struct hist_entry *he)                   \
  65 {                                                                               \
  66         return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",      \
  67                             __percent_color_snprintf, true);                    \
  68 }
  69
  70 __HPP_COLOR_PERCENT_FN(overhead, period)
  71 __HPP_COLOR_PERCENT_FN(overhead_sys, period_sys)
  72 __HPP_COLOR_PERCENT_FN(overhead_us, period_us)
  73 __HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys)
  74 __HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us)
  75 __HPP_COLOR_ACC_PERCENT_FN(overhead_acc, period)
  76
  77 #undef __HPP_COLOR_PERCENT_FN
  78
  79
  80 void perf_gtk__init_hpp(void)
  81 {
  82         perf_hpp__format[PERF_HPP__OVERHEAD].color =
  83                                 perf_gtk__hpp_color_overhead;
  84         perf_hpp__format[PERF_HPP__OVERHEAD_SYS].color =
  85                                 perf_gtk__hpp_color_overhead_sys;
  86         perf_hpp__format[PERF_HPP__OVERHEAD_US].color =
  87                                 perf_gtk__hpp_color_overhead_us;
  88         perf_hpp__format[PERF_HPP__OVERHEAD_GUEST_SYS].color =
  89                                 perf_gtk__hpp_color_overhead_guest_sys;
  90         perf_hpp__format[PERF_HPP__OVERHEAD_GUEST_US].color =
  91                                 perf_gtk__hpp_color_overhead_guest_us;
  92         perf_hpp__format[PERF_HPP__OVERHEAD_ACC].color =
  93                                 perf_gtk__hpp_color_overhead_acc;
  94 }
  95
  96 static void perf_gtk__add_callchain_flat(struct rb_root *root, GtkTreeStore *store,
  97                                          GtkTreeIter *parent, int col, u64 total)
  98 {
  99         struct rb_node *nd;
 100         bool has_single_node = (rb_first(root) == rb_last(root));
 101
 102         for (nd = rb_first(root); nd; nd = rb_next(nd)) {
 103                 struct callchain_node *node;
 104                 struct callchain_list *chain;
 105                 GtkTreeIter iter, new_parent;
 106                 bool need_new_parent;
 107
 108                 node = rb_entry(nd, struct callchain_node, rb_node);
 109
 110                 new_parent = *parent;
 111                 need_new_parent = !has_single_node;
 112
 113                 callchain_node__make_parent_list(node);
 114
 115                 list_for_each_entry(chain, &node->parent_val, list) {
 116                         char buf[128];
 117
 118                         gtk_tree_store_append(store, &iter, &new_parent);
 119
 120                         callchain_node__scnprintf_value(node, buf, sizeof(buf), total);
 121                         gtk_tree_store_set(store, &iter, 0, buf, -1);
 122
 123                         callchain_list__sym_name(chain, buf, sizeof(buf), false);
 124                         gtk_tree_store_set(store, &iter, col, buf, -1);
 125
 126                         if (need_new_parent) {
 127                                 /*
 128                                  * Only show the top-most symbol in a callchain
 129                                  * if it's not the only callchain.
 130                                  */
 131                                 new_parent = iter;
 132                                 need_new_parent = false;
 133                         }
 134                 }
 135
 136                 list_for_each_entry(chain, &node->val, list) {
 137                         char buf[128];
 138
 139                         gtk_tree_store_append(store, &iter, &new_parent);
 140
 141                         callchain_node__scnprintf_value(node, buf, sizeof(buf), total);
 142                         gtk_tree_store_set(store, &iter, 0, buf, -1);
 143
 144                         callchain_list__sym_name(chain, buf, sizeof(buf), false);
 145                         gtk_tree_store_set(store, &iter, col, buf, -1);
 146
 147                         if (need_new_parent) {
 148                                 /*
 149                                  * Only show the top-most symbol in a callchain
 150                                  * if it's not the only callchain.
 151                                  */
 152                                 new_parent = iter;
 153                                 need_new_parent = false;
 154                         }
 155                 }
 156         }
 157 }
 158
 159 static void perf_gtk__add_callchain_folded(struct rb_root *root, GtkTreeStore *store,
 160                                            GtkTreeIter *parent, int col, u64 total)
 161 {
 162         struct rb_node *nd;
 163
 164         for (nd = rb_first(root); nd; nd = rb_next(nd)) {
 165                 struct callchain_node *node;
 166                 struct callchain_list *chain;
 167                 GtkTreeIter iter;
 168                 char buf[64];
 169                 char *str, *str_alloc = NULL;
 170                 bool first = true;
 171
 172                 node = rb_entry(nd, struct callchain_node, rb_node);
 173
 174                 callchain_node__make_parent_list(node);
 175
 176                 list_for_each_entry(chain, &node->parent_val, list) {
 177                         char name[1024];
 178
 179                         callchain_list__sym_name(chain, name, sizeof(name), false);
 180
 181                         if (asprintf(&str, "%s%s%s",
 182                                      first ? "" : str_alloc,
 183                                      first ? "" : symbol_conf.field_sep ?: "; ",
 184                                      name) < 0)
 185                                 return;
 186
 187                         first = false;
 188                         free(str_alloc);
 189                         str_alloc = str;
 190                 }
 191
 192                 list_for_each_entry(chain, &node->val, list) {
 193                         char name[1024];
 194
 195                         callchain_list__sym_name(chain, name, sizeof(name), false);
 196
 197                         if (asprintf(&str, "%s%s%s",
 198                                      first ? "" : str_alloc,
 199                                      first ? "" : symbol_conf.field_sep ?: "; ",
 200                                      name) < 0)
 201                                 return;
 202
 203                         first = false;
 204                         free(str_alloc);
 205                         str_alloc = str;
 206                 }
 207
 208                 gtk_tree_store_append(store, &iter, parent);
 209
 210                 callchain_node__scnprintf_value(node, buf, sizeof(buf), total);
 211                 gtk_tree_store_set(store, &iter, 0, buf, -1);
 212
 213                 gtk_tree_store_set(store, &iter, col, str, -1);
 214
 215                 free(str_alloc);
 216         }
 217 }
 218
 219 static void perf_gtk__add_callchain_graph(struct rb_root *root, GtkTreeStore *store,
 220                                           GtkTreeIter *parent, int col, u64 total)
 221 {
 222         struct rb_node *nd;
 223         bool has_single_node = (rb_first(root) == rb_last(root));
 224
 225         for (nd = rb_first(root); nd; nd = rb_next(nd)) {
 226                 struct callchain_node *node;
 227                 struct callchain_list *chain;
 228                 GtkTreeIter iter, new_parent;
 229                 bool need_new_parent;
 230                 u64 child_total;
 231
 232                 node = rb_entry(nd, struct callchain_node, rb_node);
 233
 234                 new_parent = *parent;
 235                 need_new_parent = !has_single_node && (node->val_nr > 1);
 236
 237                 list_for_each_entry(chain, &node->val, list) {
 238                         char buf[128];
 239
 240                         gtk_tree_store_append(store, &iter, &new_parent);
 241
 242                         callchain_node__scnprintf_value(node, buf, sizeof(buf), total);
 243                         gtk_tree_store_set(store, &iter, 0, buf, -1);
 244
 245                         callchain_list__sym_name(chain, buf, sizeof(buf), false);
 246                         gtk_tree_store_set(store, &iter, col, buf, -1);
 247
 248                         if (need_new_parent) {
 249                                 /*
 250                                  * Only show the top-most symbol in a callchain
 251                                  * if it's not the only callchain.
 252                                  */
 253                                 new_parent = iter;
 254                                 need_new_parent = false;
 255                         }
 256                 }
 257
 258                 if (callchain_param.mode == CHAIN_GRAPH_REL)
 259                         child_total = node->children_hit;
 260                 else
 261                         child_total = total;
 262
 263                 /* Now 'iter' contains info of the last callchain_list */
 264                 perf_gtk__add_callchain_graph(&node->rb_root, store, &iter, col,
 265                                               child_total);
 266         }
 267 }
 268
 269 static void perf_gtk__add_callchain(struct rb_root *root, GtkTreeStore *store,
 270                                     GtkTreeIter *parent, int col, u64 total)
 271 {
 272         if (callchain_param.mode == CHAIN_FLAT)
 273                 perf_gtk__add_callchain_flat(root, store, parent, col, total);
 274         else if (callchain_param.mode == CHAIN_FOLDED)
 275                 perf_gtk__add_callchain_folded(root, store, parent, col, total);
 276         else
 277                 perf_gtk__add_callchain_graph(root, store, parent, col, total);
 278 }
 279
 280 static void on_row_activated(GtkTreeView *view, GtkTreePath *path,
 281                              GtkTreeViewColumn *col __maybe_unused,
 282                              gpointer user_data __maybe_unused)
 283 {
 284         bool expanded = gtk_tree_view_row_expanded(view, path);
 285
 286         if (expanded)
 287                 gtk_tree_view_collapse_row(view, path);
 288         else
 289                 gtk_tree_view_expand_row(view, path, FALSE);
 290 }
 291
 292 static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
 293                                  float min_pcnt)
 294 {
 295         struct perf_hpp_fmt *fmt;
 296         GType col_types[MAX_COLUMNS];
 297         GtkCellRenderer *renderer;
 298         GtkTreeStore *store;
 299         struct rb_node *nd;
 300         GtkWidget *view;
 301         int col_idx;
 302         int sym_col = -1;
 303         int nr_cols;
 304         char s[512];
 305
 306         struct perf_hpp hpp = {
 307                 .buf            = s,
 308                 .size           = sizeof(s),
 309         };
 310
 311         nr_cols = 0;
 312
 313         hists__for_each_format(hists, fmt)
 314                 col_types[nr_cols++] = G_TYPE_STRING;
 315
 316         store = gtk_tree_store_newv(nr_cols, col_types);
 317
 318         view = gtk_tree_view_new();
 319
 320         renderer = gtk_cell_renderer_text_new();
 321
 322         col_idx = 0;
 323
 324         hists__for_each_format(hists, fmt) {
 325                 if (perf_hpp__should_skip(fmt, hists))
 326                         continue;
 327
 328                 /*
 329                  * XXX no way to determine where symcol column is..
 330                  *     Just use last column for now.
 331                  */
 332                 if (perf_hpp__is_sort_entry(fmt))
 333                         sym_col = col_idx;
 334
 335                 gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
 336                                                             -1, fmt->name,
 337                                                             renderer, "markup",
 338                                                             col_idx++, NULL);
 339         }
 340
 341         for (col_idx = 0; col_idx < nr_cols; col_idx++) {
 342                 GtkTreeViewColumn *column;
 343
 344                 column = gtk_tree_view_get_column(GTK_TREE_VIEW(view), col_idx);
 345                 gtk_tree_view_column_set_resizable(column, TRUE);
 346
 347                 if (col_idx == sym_col) {
 348                         gtk_tree_view_set_expander_column(GTK_TREE_VIEW(view),
 349                                                           column);
 350                 }
 351         }
 352
 353         gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(store));
 354
 355         g_object_unref(GTK_TREE_MODEL(store));
 356
 357         for (nd = rb_first_cached(&hists->entries); nd; nd = rb_next(nd)) {
 358                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 359                 GtkTreeIter iter;
 360                 u64 total = hists__total_period(h->hists);
 361                 float percent;
 362
 363                 if (h->filtered)
 364                         continue;
 365
 366                 percent = hist_entry__get_percent_limit(h);
 367                 if (percent < min_pcnt)
 368                         continue;
 369
 370                 gtk_tree_store_append(store, &iter, NULL);
 371
 372                 col_idx = 0;
 373
 374                 hists__for_each_format(hists, fmt) {
 375                         if (perf_hpp__should_skip(fmt, h->hists))
 376                                 continue;
 377
 378                         if (fmt->color)
 379                                 fmt->color(fmt, &hpp, h);
 380                         else
 381                                 fmt->entry(fmt, &hpp, h);
 382
 383                         gtk_tree_store_set(store, &iter, col_idx++, s, -1);
 384                 }
 385
 386                 if (hist_entry__has_callchains(h) &&
 387                     symbol_conf.use_callchain && hists__has(hists, sym)) {
 388                         if (callchain_param.mode == CHAIN_GRAPH_REL)
 389                                 total = symbol_conf.cumulate_callchain ?
 390                                         h->stat_acc->period : h->stat.period;
 391
 392                         perf_gtk__add_callchain(&h->sorted_chain, store, &iter,
 393                                                 sym_col, total);
 394                 }
 395         }
 396
 397         gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(view), TRUE);
 398
 399         g_signal_connect(view, "row-activated",
 400                          G_CALLBACK(on_row_activated), NULL);
 401         gtk_container_add(GTK_CONTAINER(window), view);
 402 }
 403
 404 static void perf_gtk__add_hierarchy_entries(struct hists *hists,
 405                                             struct rb_root_cached *root,
 406                                             GtkTreeStore *store,
 407                                             GtkTreeIter *parent,
 408                                             struct perf_hpp *hpp,
 409                                             float min_pcnt)
 410 {
 411         int col_idx = 0;
 412         struct rb_node *node;
 413         struct hist_entry *he;
 414         struct perf_hpp_fmt *fmt;
 415         struct perf_hpp_list_node *fmt_node;
 416         u64 total = hists__total_period(hists);
 417         int size;
 418
 419         for (node = rb_first_cached(root); node; node = rb_next(node)) {
 420                 GtkTreeIter iter;
 421                 float percent;
 422                 char *bf;
 423
 424                 he = rb_entry(node, struct hist_entry, rb_node);
 425                 if (he->filtered)
 426                         continue;
 427
 428                 percent = hist_entry__get_percent_limit(he);
 429                 if (percent < min_pcnt)
 430                         continue;
 431
 432                 gtk_tree_store_append(store, &iter, parent);
 433
 434                 col_idx = 0;
 435
 436                 /* the first hpp_list_node is for overhead columns */
 437                 fmt_node = list_first_entry(&hists->hpp_formats,
 438                                             struct perf_hpp_list_node, list);
 439                 perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) {
 440                         if (fmt->color)
 441                                 fmt->color(fmt, hpp, he);
 442                         else
 443                                 fmt->entry(fmt, hpp, he);
 444
 445                         gtk_tree_store_set(store, &iter, col_idx++, hpp->buf, -1);
 446                 }
 447
 448                 bf = hpp->buf;
 449                 size = hpp->size;
 450                 perf_hpp_list__for_each_format(he->hpp_list, fmt) {
 451                         int ret;
 452
 453                         if (fmt->color)
 454                                 ret = fmt->color(fmt, hpp, he);
 455                         else
 456                                 ret = fmt->entry(fmt, hpp, he);
 457
 458                         snprintf(hpp->buf + ret, hpp->size - ret, "  ");
 459                         advance_hpp(hpp, ret + 2);
 460                 }
 461
 462                 gtk_tree_store_set(store, &iter, col_idx, ltrim(rtrim(bf)), -1);
 463
 464                 if (!he->leaf) {
 465                         hpp->buf = bf;
 466                         hpp->size = size;
 467
 468                         perf_gtk__add_hierarchy_entries(hists, &he->hroot_out,
 469                                                         store, &iter, hpp,
 470                                                         min_pcnt);
 471
 472                         if (!hist_entry__has_hierarchy_children(he, min_pcnt)) {
 473                                 char buf[32];
 474                                 GtkTreeIter child;
 475
 476                                 snprintf(buf, sizeof(buf), "no entry >= %.2f%%",
 477                                          min_pcnt);
 478
 479                                 gtk_tree_store_append(store, &child, &iter);
 480                                 gtk_tree_store_set(store, &child, col_idx, buf, -1);
 481                         }
 482                 }
 483
 484                 if (he->leaf && hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
 485                         if (callchain_param.mode == CHAIN_GRAPH_REL)
 486                                 total = symbol_conf.cumulate_callchain ?
 487                                         he->stat_acc->period : he->stat.period;
 488
 489                         perf_gtk__add_callchain(&he->sorted_chain, store, &iter,
 490                                                 col_idx, total);
 491                 }
 492         }
 493
 494 }
 495
 496 static void perf_gtk__show_hierarchy(GtkWidget *window, struct hists *hists,
 497                                      float min_pcnt)
 498 {
 499         struct perf_hpp_fmt *fmt;
 500         struct perf_hpp_list_node *fmt_node;
 501         GType col_types[MAX_COLUMNS];
 502         GtkCellRenderer *renderer;
 503         GtkTreeStore *store;
 504         GtkWidget *view;
 505         int col_idx;
 506         int nr_cols = 0;
 507         char s[512];
 508         char buf[512];
 509         bool first_node, first_col;
 510         struct perf_hpp hpp = {
 511                 .buf            = s,
 512                 .size           = sizeof(s),
 513         };
 514
 515         hists__for_each_format(hists, fmt) {
 516                 if (perf_hpp__is_sort_entry(fmt) ||
 517                     perf_hpp__is_dynamic_entry(fmt))
 518                         break;
 519
 520                 col_types[nr_cols++] = G_TYPE_STRING;
 521         }
 522         col_types[nr_cols++] = G_TYPE_STRING;
 523
 524         store = gtk_tree_store_newv(nr_cols, col_types);
 525         view = gtk_tree_view_new();
 526         renderer = gtk_cell_renderer_text_new();
 527
 528         col_idx = 0;
 529
 530         /* the first hpp_list_node is for overhead columns */
 531         fmt_node = list_first_entry(&hists->hpp_formats,
 532                                     struct perf_hpp_list_node, list);
 533         perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) {
 534                 gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
 535                                                             -1, fmt->name,
 536                                                             renderer, "markup",
 537                                                             col_idx++, NULL);
 538         }
 539
 540         /* construct merged column header since sort keys share single column */
 541         buf[0] = '\0';
 542         first_node = true;
 543         list_for_each_entry_continue(fmt_node, &hists->hpp_formats, list) {
 544                 if (!first_node)
 545                         strcat(buf, " / ");
 546                 first_node = false;
 547
 548                 first_col = true;
 549                 perf_hpp_list__for_each_format(&fmt_node->hpp ,fmt) {
 550                         if (perf_hpp__should_skip(fmt, hists))
 551                                 continue;
 552
 553                         if (!first_col)
 554                                 strcat(buf, "+");
 555                         first_col = false;
 556
 557                         fmt->header(fmt, &hpp, hists, 0, NULL);
 558                         strcat(buf, ltrim(rtrim(hpp.buf)));
 559                 }
 560         }
 561
 562         gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
 563                                                     -1, buf,
 564                                                     renderer, "markup",
 565                                                     col_idx++, NULL);
 566
 567         for (col_idx = 0; col_idx < nr_cols; col_idx++) {
 568                 GtkTreeViewColumn *column;
 569
 570                 column = gtk_tree_view_get_column(GTK_TREE_VIEW(view), col_idx);
 571                 gtk_tree_view_column_set_resizable(column, TRUE);
 572
 573                 if (col_idx == 0) {
 574                         gtk_tree_view_set_expander_column(GTK_TREE_VIEW(view),
 575                                                           column);
 576                 }
 577         }
 578
 579         gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(store));
 580         g_object_unref(GTK_TREE_MODEL(store));
 581
 582         perf_gtk__add_hierarchy_entries(hists, &hists->entries, store,
 583                                         NULL, &hpp, min_pcnt);
 584
 585         gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(view), TRUE);
 586
 587         g_signal_connect(view, "row-activated",
 588                          G_CALLBACK(on_row_activated), NULL);
 589         gtk_container_add(GTK_CONTAINER(window), view);
 590 }
 591
 592 int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
 593                                   const char *help,
 594                                   struct hist_browser_timer *hbt __maybe_unused,
 595                                   float min_pcnt)
 596 {
 597         struct perf_evsel *pos;
 598         GtkWidget *vbox;
 599         GtkWidget *notebook;
 600         GtkWidget *info_bar;
 601         GtkWidget *statbar;
 602         GtkWidget *window;
 603
 604         signal(SIGSEGV, perf_gtk__signal);
 605         signal(SIGFPE,  perf_gtk__signal);
 606         signal(SIGINT,  perf_gtk__signal);
 607         signal(SIGQUIT, perf_gtk__signal);
 608         signal(SIGTERM, perf_gtk__signal);
 609
 610         window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 611
 612         gtk_window_set_title(GTK_WINDOW(window), "perf report");
 613
 614         g_signal_connect(window, "delete_event", gtk_main_quit, NULL);
 615
 616         pgctx = perf_gtk__activate_context(window);
 617         if (!pgctx)
 618                 return -1;
 619
 620         vbox = gtk_vbox_new(FALSE, 0);
 621
 622         notebook = gtk_notebook_new();
 623
 624         gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0);
 625
 626         info_bar = perf_gtk__setup_info_bar();
 627         if (info_bar)
 628                 gtk_box_pack_start(GTK_BOX(vbox), info_bar, FALSE, FALSE, 0);
 629
 630         statbar = perf_gtk__setup_statusbar();
 631         gtk_box_pack_start(GTK_BOX(vbox), statbar, FALSE, FALSE, 0);
 632
 633         gtk_container_add(GTK_CONTAINER(window), vbox);
 634
 635         evlist__for_each_entry(evlist, pos) {
 636                 struct hists *hists = evsel__hists(pos);
 637                 const char *evname = perf_evsel__name(pos);
 638                 GtkWidget *scrolled_window;
 639                 GtkWidget *tab_label;
 640                 char buf[512];
 641                 size_t size = sizeof(buf);
 642
 643                 if (symbol_conf.event_group) {
 644                         if (!perf_evsel__is_group_leader(pos))
 645                                 continue;
 646
 647                         if (pos->nr_members > 1) {
 648                                 perf_evsel__group_desc(pos, buf, size);
 649                                 evname = buf;
 650                         }
 651                 }
 652
 653                 scrolled_window = gtk_scrolled_window_new(NULL, NULL);
 654
 655                 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
 656                                                         GTK_POLICY_AUTOMATIC,
 657                                                         GTK_POLICY_AUTOMATIC);
 658
 659                 if (symbol_conf.report_hierarchy)
 660                         perf_gtk__show_hierarchy(scrolled_window, hists, min_pcnt);
 661                 else
 662                         perf_gtk__show_hists(scrolled_window, hists, min_pcnt);
 663
 664                 tab_label = gtk_label_new(evname);
 665
 666                 gtk_notebook_append_page(GTK_NOTEBOOK(notebook), scrolled_window, tab_label);
 667         }
 668
 669         gtk_widget_show_all(window);
 670
 671         perf_gtk__resize_window(window);
 672
 673         gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
 674
 675         ui_helpline__push(help);
 676
 677         gtk_main();
 678
 679         perf_gtk__deactivate_context(&pgctx);
 680
 681         return 0;
 682 }