tools/perf/ui/gtk/hists.c

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