kernel/tools/perf/tests/hists_cumulate.c

   1 #include "perf.h"
   2 #include "util/debug.h"
   3 #include "util/symbol.h"
   4 #include "util/sort.h"
   5 #include "util/evsel.h"
   6 #include "util/evlist.h"
   7 #include "util/machine.h"
   8 #include "util/thread.h"
   9 #include "util/parse-events.h"
  10 #include "tests/tests.h"
  11 #include "tests/hists_common.h"
  12
  13 struct sample {
  14         u32 pid;
  15         u64 ip;
  16         struct thread *thread;
  17         struct map *map;
  18         struct symbol *sym;
  19 };
  20
  21 /* For the numbers, see hists_common.c */
  22 static struct sample fake_samples[] = {
  23         /* perf [kernel] schedule() */
  24         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
  25         /* perf [perf]   main() */
  26         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
  27         /* perf [perf]   cmd_record() */
  28         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
  29         /* perf [libc]   malloc() */
  30         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
  31         /* perf [libc]   free() */
  32         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
  33         /* perf [perf]   main() */
  34         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
  35         /* perf [kernel] page_fault() */
  36         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  37         /* bash [bash]   main() */
  38         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
  39         /* bash [bash]   xmalloc() */
  40         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
  41         /* bash [kernel] page_fault() */
  42         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  43 };
  44
  45 /*
  46  * Will be casted to struct ip_callchain which has all 64 bit entries
  47  * of nr and ips[].
  48  */
  49 static u64 fake_callchains[][10] = {
  50         /*   schedule => run_command => main */
  51         { 3, FAKE_IP_KERNEL_SCHEDULE, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
  52         /*   main  */
  53         { 1, FAKE_IP_PERF_MAIN, },
  54         /*   cmd_record => run_command => main */
  55         { 3, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
  56         /*   malloc => cmd_record => run_command => main */
  57         { 4, FAKE_IP_LIBC_MALLOC, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
  58              FAKE_IP_PERF_MAIN, },
  59         /*   free => cmd_record => run_command => main */
  60         { 4, FAKE_IP_LIBC_FREE, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
  61              FAKE_IP_PERF_MAIN, },
  62         /*   main */
  63         { 1, FAKE_IP_PERF_MAIN, },
  64         /*   page_fault => sys_perf_event_open => run_command => main */
  65         { 4, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN,
  66              FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
  67         /*   main */
  68         { 1, FAKE_IP_BASH_MAIN, },
  69         /*   xmalloc => malloc => xmalloc => malloc => xmalloc => main */
  70         { 6, FAKE_IP_BASH_XMALLOC, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC,
  71              FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, FAKE_IP_BASH_MAIN, },
  72         /*   page_fault => malloc => main */
  73         { 3, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_MAIN, },
  74 };
  75
  76 static int add_hist_entries(struct hists *hists, struct machine *machine)
  77 {
  78         struct addr_location al;
  79         struct perf_evsel *evsel = hists_to_evsel(hists);
  80         struct perf_sample sample = { .period = 1000, };
  81         size_t i;
  82
  83         for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
  84                 const union perf_event event = {
  85                         .header = {
  86                                 .misc = PERF_RECORD_MISC_USER,
  87                         },
  88                 };
  89                 struct hist_entry_iter iter = {
  90                         .evsel = evsel,
  91                         .sample = &sample,
  92                         .hide_unresolved = false,
  93                 };
  94
  95                 if (symbol_conf.cumulate_callchain)
  96                         iter.ops = &hist_iter_cumulative;
  97                 else
  98                         iter.ops = &hist_iter_normal;
  99
 100                 sample.pid = fake_samples[i].pid;
 101                 sample.tid = fake_samples[i].pid;
 102                 sample.ip = fake_samples[i].ip;
 103                 sample.callchain = (struct ip_callchain *)fake_callchains[i];
 104
 105                 if (perf_event__preprocess_sample(&event, machine, &al,
 106                                                   &sample) < 0)
 107                         goto out;
 108
 109                 if (hist_entry_iter__add(&iter, &al, PERF_MAX_STACK_DEPTH,
 110                                          NULL) < 0) {
 111                         addr_location__put(&al);
 112                         goto out;
 113                 }
 114
 115                 fake_samples[i].thread = al.thread;
 116                 fake_samples[i].map = al.map;
 117                 fake_samples[i].sym = al.sym;
 118         }
 119
 120         return TEST_OK;
 121
 122 out:
 123         pr_debug("Not enough memory for adding a hist entry\n");
 124         return TEST_FAIL;
 125 }
 126
 127 static void del_hist_entries(struct hists *hists)
 128 {
 129         struct hist_entry *he;
 130         struct rb_root *root_in;
 131         struct rb_root *root_out;
 132         struct rb_node *node;
 133
 134         if (sort__need_collapse)
 135                 root_in = &hists->entries_collapsed;
 136         else
 137                 root_in = hists->entries_in;
 138
 139         root_out = &hists->entries;
 140
 141         while (!RB_EMPTY_ROOT(root_out)) {
 142                 node = rb_first(root_out);
 143
 144                 he = rb_entry(node, struct hist_entry, rb_node);
 145                 rb_erase(node, root_out);
 146                 rb_erase(&he->rb_node_in, root_in);
 147                 hist_entry__delete(he);
 148         }
 149 }
 150
 151 typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
 152
 153 #define COMM(he)  (thread__comm_str(he->thread))
 154 #define DSO(he)   (he->ms.map->dso->short_name)
 155 #define SYM(he)   (he->ms.sym->name)
 156 #define CPU(he)   (he->cpu)
 157 #define PID(he)   (he->thread->tid)
 158 #define DEPTH(he) (he->callchain->max_depth)
 159 #define CDSO(cl)  (cl->ms.map->dso->short_name)
 160 #define CSYM(cl)  (cl->ms.sym->name)
 161
 162 struct result {
 163         u64 children;
 164         u64 self;
 165         const char *comm;
 166         const char *dso;
 167         const char *sym;
 168 };
 169
 170 struct callchain_result {
 171         u64 nr;
 172         struct {
 173                 const char *dso;
 174                 const char *sym;
 175         } node[10];
 176 };
 177
 178 static int do_test(struct hists *hists, struct result *expected, size_t nr_expected,
 179                    struct callchain_result *expected_callchain, size_t nr_callchain)
 180 {
 181         char buf[32];
 182         size_t i, c;
 183         struct hist_entry *he;
 184         struct rb_root *root;
 185         struct rb_node *node;
 186         struct callchain_node *cnode;
 187         struct callchain_list *clist;
 188
 189         /*
 190          * adding and deleting hist entries must be done outside of this
 191          * function since TEST_ASSERT_VAL() returns in case of failure.
 192          */
 193         hists__collapse_resort(hists, NULL);
 194         hists__output_resort(hists, NULL);
 195
 196         if (verbose > 2) {
 197                 pr_info("use callchain: %d, cumulate callchain: %d\n",
 198                         symbol_conf.use_callchain,
 199                         symbol_conf.cumulate_callchain);
 200                 print_hists_out(hists);
 201         }
 202
 203         root = &hists->entries;
 204         for (node = rb_first(root), i = 0;
 205              node && (he = rb_entry(node, struct hist_entry, rb_node));
 206              node = rb_next(node), i++) {
 207                 scnprintf(buf, sizeof(buf), "Invalid hist entry #%zd", i);
 208
 209                 TEST_ASSERT_VAL("Incorrect number of hist entry",
 210                                 i < nr_expected);
 211                 TEST_ASSERT_VAL(buf, he->stat.period == expected[i].self &&
 212                                 !strcmp(COMM(he), expected[i].comm) &&
 213                                 !strcmp(DSO(he), expected[i].dso) &&
 214                                 !strcmp(SYM(he), expected[i].sym));
 215
 216                 if (symbol_conf.cumulate_callchain)
 217                         TEST_ASSERT_VAL(buf, he->stat_acc->period == expected[i].children);
 218
 219                 if (!symbol_conf.use_callchain)
 220                         continue;
 221
 222                 /* check callchain entries */
 223                 root = &he->callchain->node.rb_root;
 224                 cnode = rb_entry(rb_first(root), struct callchain_node, rb_node);
 225
 226                 c = 0;
 227                 list_for_each_entry(clist, &cnode->val, list) {
 228                         scnprintf(buf, sizeof(buf), "Invalid callchain entry #%zd/%zd", i, c);
 229
 230                         TEST_ASSERT_VAL("Incorrect number of callchain entry",
 231                                         c < expected_callchain[i].nr);
 232                         TEST_ASSERT_VAL(buf,
 233                                 !strcmp(CDSO(clist), expected_callchain[i].node[c].dso) &&
 234                                 !strcmp(CSYM(clist), expected_callchain[i].node[c].sym));
 235                         c++;
 236                 }
 237                 /* TODO: handle multiple child nodes properly */
 238                 TEST_ASSERT_VAL("Incorrect number of callchain entry",
 239                                 c <= expected_callchain[i].nr);
 240         }
 241         TEST_ASSERT_VAL("Incorrect number of hist entry",
 242                         i == nr_expected);
 243         TEST_ASSERT_VAL("Incorrect number of callchain entry",
 244                         !symbol_conf.use_callchain || nr_expected == nr_callchain);
 245         return 0;
 246 }
 247
 248 /* NO callchain + NO children */
 249 static int test1(struct perf_evsel *evsel, struct machine *machine)
 250 {
 251         int err;
 252         struct hists *hists = evsel__hists(evsel);
 253         /*
 254          * expected output:
 255          *
 256          * Overhead  Command  Shared Object          Symbol
 257          * ========  =======  =============  ==============
 258          *   20.00%     perf  perf           [.] main
 259          *   10.00%     bash  [kernel]       [k] page_fault
 260          *   10.00%     bash  bash           [.] main
 261          *   10.00%     bash  bash           [.] xmalloc
 262          *   10.00%     perf  [kernel]       [k] page_fault
 263          *   10.00%     perf  [kernel]       [k] schedule
 264          *   10.00%     perf  libc           [.] free
 265          *   10.00%     perf  libc           [.] malloc
 266          *   10.00%     perf  perf           [.] cmd_record
 267          */
 268         struct result expected[] = {
 269                 { 0, 2000, "perf", "perf",     "main" },
 270                 { 0, 1000, "bash", "[kernel]", "page_fault" },
 271                 { 0, 1000, "bash", "bash",     "main" },
 272                 { 0, 1000, "bash", "bash",     "xmalloc" },
 273                 { 0, 1000, "perf", "[kernel]", "page_fault" },
 274                 { 0, 1000, "perf", "[kernel]", "schedule" },
 275                 { 0, 1000, "perf", "libc",     "free" },
 276                 { 0, 1000, "perf", "libc",     "malloc" },
 277                 { 0, 1000, "perf", "perf",     "cmd_record" },
 278         };
 279
 280         symbol_conf.use_callchain = false;
 281         symbol_conf.cumulate_callchain = false;
 282         perf_evsel__reset_sample_bit(evsel, CALLCHAIN);
 283
 284         setup_sorting();
 285         callchain_register_param(&callchain_param);
 286
 287         err = add_hist_entries(hists, machine);
 288         if (err < 0)
 289                 goto out;
 290
 291         err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
 292
 293 out:
 294         del_hist_entries(hists);
 295         reset_output_field();
 296         return err;
 297 }
 298
 299 /* callcain + NO children */
 300 static int test2(struct perf_evsel *evsel, struct machine *machine)
 301 {
 302         int err;
 303         struct hists *hists = evsel__hists(evsel);
 304         /*
 305          * expected output:
 306          *
 307          * Overhead  Command  Shared Object          Symbol
 308          * ========  =======  =============  ==============
 309          *   20.00%     perf  perf           [.] main
 310          *              |
 311          *              --- main
 312          *
 313          *   10.00%     bash  [kernel]       [k] page_fault
 314          *              |
 315          *              --- page_fault
 316          *                  malloc
 317          *                  main
 318          *
 319          *   10.00%     bash  bash           [.] main
 320          *              |
 321          *              --- main
 322          *
 323          *   10.00%     bash  bash           [.] xmalloc
 324          *              |
 325          *              --- xmalloc
 326          *                  malloc
 327          *                  xmalloc     <--- NOTE: there's a cycle
 328          *                  malloc
 329          *                  xmalloc
 330          *                  main
 331          *
 332          *   10.00%     perf  [kernel]       [k] page_fault
 333          *              |
 334          *              --- page_fault
 335          *                  sys_perf_event_open
 336          *                  run_command
 337          *                  main
 338          *
 339          *   10.00%     perf  [kernel]       [k] schedule
 340          *              |
 341          *              --- schedule
 342          *                  run_command
 343          *                  main
 344          *
 345          *   10.00%     perf  libc           [.] free
 346          *              |
 347          *              --- free
 348          *                  cmd_record
 349          *                  run_command
 350          *                  main
 351          *
 352          *   10.00%     perf  libc           [.] malloc
 353          *              |
 354          *              --- malloc
 355          *                  cmd_record
 356          *                  run_command
 357          *                  main
 358          *
 359          *   10.00%     perf  perf           [.] cmd_record
 360          *              |
 361          *              --- cmd_record
 362          *                  run_command
 363          *                  main
 364          *
 365          */
 366         struct result expected[] = {
 367                 { 0, 2000, "perf", "perf",     "main" },
 368                 { 0, 1000, "bash", "[kernel]", "page_fault" },
 369                 { 0, 1000, "bash", "bash",     "main" },
 370                 { 0, 1000, "bash", "bash",     "xmalloc" },
 371                 { 0, 1000, "perf", "[kernel]", "page_fault" },
 372                 { 0, 1000, "perf", "[kernel]", "schedule" },
 373                 { 0, 1000, "perf", "libc",     "free" },
 374                 { 0, 1000, "perf", "libc",     "malloc" },
 375                 { 0, 1000, "perf", "perf",     "cmd_record" },
 376         };
 377         struct callchain_result expected_callchain[] = {
 378                 {
 379                         1, {    { "perf",     "main" }, },
 380                 },
 381                 {
 382                         3, {    { "[kernel]", "page_fault" },
 383                                 { "libc",     "malloc" },
 384                                 { "bash",     "main" }, },
 385                 },
 386                 {
 387                         1, {    { "bash",     "main" }, },
 388                 },
 389                 {
 390                         6, {    { "bash",     "xmalloc" },
 391                                 { "libc",     "malloc" },
 392                                 { "bash",     "xmalloc" },
 393                                 { "libc",     "malloc" },
 394                                 { "bash",     "xmalloc" },
 395                                 { "bash",     "main" }, },
 396                 },
 397                 {
 398                         4, {    { "[kernel]", "page_fault" },
 399                                 { "[kernel]", "sys_perf_event_open" },
 400                                 { "perf",     "run_command" },
 401                                 { "perf",     "main" }, },
 402                 },
 403                 {
 404                         3, {    { "[kernel]", "schedule" },
 405                                 { "perf",     "run_command" },
 406                                 { "perf",     "main" }, },
 407                 },
 408                 {
 409                         4, {    { "libc",     "free" },
 410                                 { "perf",     "cmd_record" },
 411                                 { "perf",     "run_command" },
 412                                 { "perf",     "main" }, },
 413                 },
 414                 {
 415                         4, {    { "libc",     "malloc" },
 416                                 { "perf",     "cmd_record" },
 417                                 { "perf",     "run_command" },
 418                                 { "perf",     "main" }, },
 419                 },
 420                 {
 421                         3, {    { "perf",     "cmd_record" },
 422                                 { "perf",     "run_command" },
 423                                 { "perf",     "main" }, },
 424                 },
 425         };
 426
 427         symbol_conf.use_callchain = true;
 428         symbol_conf.cumulate_callchain = false;
 429         perf_evsel__set_sample_bit(evsel, CALLCHAIN);
 430
 431         setup_sorting();
 432         callchain_register_param(&callchain_param);
 433
 434         err = add_hist_entries(hists, machine);
 435         if (err < 0)
 436                 goto out;
 437
 438         err = do_test(hists, expected, ARRAY_SIZE(expected),
 439                       expected_callchain, ARRAY_SIZE(expected_callchain));
 440
 441 out:
 442         del_hist_entries(hists);
 443         reset_output_field();
 444         return err;
 445 }
 446
 447 /* NO callchain + children */
 448 static int test3(struct perf_evsel *evsel, struct machine *machine)
 449 {
 450         int err;
 451         struct hists *hists = evsel__hists(evsel);
 452         /*
 453          * expected output:
 454          *
 455          * Children      Self  Command  Shared Object                   Symbol
 456          * ========  ========  =======  =============  =======================
 457          *   70.00%    20.00%     perf  perf           [.] main
 458          *   50.00%     0.00%     perf  perf           [.] run_command
 459          *   30.00%    10.00%     bash  bash           [.] main
 460          *   30.00%    10.00%     perf  perf           [.] cmd_record
 461          *   20.00%     0.00%     bash  libc           [.] malloc
 462          *   10.00%    10.00%     bash  [kernel]       [k] page_fault
 463          *   10.00%    10.00%     bash  bash           [.] xmalloc
 464          *   10.00%    10.00%     perf  [kernel]       [k] page_fault
 465          *   10.00%    10.00%     perf  libc           [.] malloc
 466          *   10.00%    10.00%     perf  [kernel]       [k] schedule
 467          *   10.00%    10.00%     perf  libc           [.] free
 468          *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open
 469          */
 470         struct result expected[] = {
 471                 { 7000, 2000, "perf", "perf",     "main" },
 472                 { 5000,    0, "perf", "perf",     "run_command" },
 473                 { 3000, 1000, "bash", "bash",     "main" },
 474                 { 3000, 1000, "perf", "perf",     "cmd_record" },
 475                 { 2000,    0, "bash", "libc",     "malloc" },
 476                 { 1000, 1000, "bash", "[kernel]", "page_fault" },
 477                 { 1000, 1000, "bash", "bash",     "xmalloc" },
 478                 { 1000, 1000, "perf", "[kernel]", "page_fault" },
 479                 { 1000, 1000, "perf", "[kernel]", "schedule" },
 480                 { 1000, 1000, "perf", "libc",     "free" },
 481                 { 1000, 1000, "perf", "libc",     "malloc" },
 482                 { 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },
 483         };
 484
 485         symbol_conf.use_callchain = false;
 486         symbol_conf.cumulate_callchain = true;
 487         perf_evsel__reset_sample_bit(evsel, CALLCHAIN);
 488
 489         setup_sorting();
 490         callchain_register_param(&callchain_param);
 491
 492         err = add_hist_entries(hists, machine);
 493         if (err < 0)
 494                 goto out;
 495
 496         err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
 497
 498 out:
 499         del_hist_entries(hists);
 500         reset_output_field();
 501         return err;
 502 }
 503
 504 /* callchain + children */
 505 static int test4(struct perf_evsel *evsel, struct machine *machine)
 506 {
 507         int err;
 508         struct hists *hists = evsel__hists(evsel);
 509         /*
 510          * expected output:
 511          *
 512          * Children      Self  Command  Shared Object                   Symbol
 513          * ========  ========  =======  =============  =======================
 514          *   70.00%    20.00%     perf  perf           [.] main
 515          *              |
 516          *              --- main
 517          *
 518          *   50.00%     0.00%     perf  perf           [.] run_command
 519          *              |
 520          *              --- run_command
 521          *                  main
 522          *
 523          *   30.00%    10.00%     bash  bash           [.] main
 524          *              |
 525          *              --- main
 526          *
 527          *   30.00%    10.00%     perf  perf           [.] cmd_record
 528          *              |
 529          *              --- cmd_record
 530          *                  run_command
 531          *                  main
 532          *
 533          *   20.00%     0.00%     bash  libc           [.] malloc
 534          *              |
 535          *              --- malloc
 536          *                 |
 537          *                 |--50.00%-- xmalloc
 538          *                 |           main
 539          *                  --50.00%-- main
 540          *
 541          *   10.00%    10.00%     bash  [kernel]       [k] page_fault
 542          *              |
 543          *              --- page_fault
 544          *                  malloc
 545          *                  main
 546          *
 547          *   10.00%    10.00%     bash  bash           [.] xmalloc
 548          *              |
 549          *              --- xmalloc
 550          *                  malloc
 551          *                  xmalloc     <--- NOTE: there's a cycle
 552          *                  malloc
 553          *                  xmalloc
 554          *                  main
 555          *
 556          *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open
 557          *              |
 558          *              --- sys_perf_event_open
 559          *                  run_command
 560          *                  main
 561          *
 562          *   10.00%    10.00%     perf  [kernel]       [k] page_fault
 563          *              |
 564          *              --- page_fault
 565          *                  sys_perf_event_open
 566          *                  run_command
 567          *                  main
 568          *
 569          *   10.00%    10.00%     perf  [kernel]       [k] schedule
 570          *              |
 571          *              --- schedule
 572          *                  run_command
 573          *                  main
 574          *
 575          *   10.00%    10.00%     perf  libc           [.] free
 576          *              |
 577          *              --- free
 578          *                  cmd_record
 579          *                  run_command
 580          *                  main
 581          *
 582          *   10.00%    10.00%     perf  libc           [.] malloc
 583          *              |
 584          *              --- malloc
 585          *                  cmd_record
 586          *                  run_command
 587          *                  main
 588          *
 589          */
 590         struct result expected[] = {
 591                 { 7000, 2000, "perf", "perf",     "main" },
 592                 { 5000,    0, "perf", "perf",     "run_command" },
 593                 { 3000, 1000, "bash", "bash",     "main" },
 594                 { 3000, 1000, "perf", "perf",     "cmd_record" },
 595                 { 2000,    0, "bash", "libc",     "malloc" },
 596                 { 1000, 1000, "bash", "[kernel]", "page_fault" },
 597                 { 1000, 1000, "bash", "bash",     "xmalloc" },
 598                 { 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },
 599                 { 1000, 1000, "perf", "[kernel]", "page_fault" },
 600                 { 1000, 1000, "perf", "[kernel]", "schedule" },
 601                 { 1000, 1000, "perf", "libc",     "free" },
 602                 { 1000, 1000, "perf", "libc",     "malloc" },
 603         };
 604         struct callchain_result expected_callchain[] = {
 605                 {
 606                         1, {    { "perf",     "main" }, },
 607                 },
 608                 {
 609                         2, {    { "perf",     "run_command" },
 610                                 { "perf",     "main" }, },
 611                 },
 612                 {
 613                         1, {    { "bash",     "main" }, },
 614                 },
 615                 {
 616                         3, {    { "perf",     "cmd_record" },
 617                                 { "perf",     "run_command" },
 618                                 { "perf",     "main" }, },
 619                 },
 620                 {
 621                         4, {    { "libc",     "malloc" },
 622                                 { "bash",     "xmalloc" },
 623                                 { "bash",     "main" },
 624                                 { "bash",     "main" }, },
 625                 },
 626                 {
 627                         3, {    { "[kernel]", "page_fault" },
 628                                 { "libc",     "malloc" },
 629                                 { "bash",     "main" }, },
 630                 },
 631                 {
 632                         6, {    { "bash",     "xmalloc" },
 633                                 { "libc",     "malloc" },
 634                                 { "bash",     "xmalloc" },
 635                                 { "libc",     "malloc" },
 636                                 { "bash",     "xmalloc" },
 637                                 { "bash",     "main" }, },
 638                 },
 639                 {
 640                         3, {    { "[kernel]", "sys_perf_event_open" },
 641                                 { "perf",     "run_command" },
 642                                 { "perf",     "main" }, },
 643                 },
 644                 {
 645                         4, {    { "[kernel]", "page_fault" },
 646                                 { "[kernel]", "sys_perf_event_open" },
 647                                 { "perf",     "run_command" },
 648                                 { "perf",     "main" }, },
 649                 },
 650                 {
 651                         3, {    { "[kernel]", "schedule" },
 652                                 { "perf",     "run_command" },
 653                                 { "perf",     "main" }, },
 654                 },
 655                 {
 656                         4, {    { "libc",     "free" },
 657                                 { "perf",     "cmd_record" },
 658                                 { "perf",     "run_command" },
 659                                 { "perf",     "main" }, },
 660                 },
 661                 {
 662                         4, {    { "libc",     "malloc" },
 663                                 { "perf",     "cmd_record" },
 664                                 { "perf",     "run_command" },
 665                                 { "perf",     "main" }, },
 666                 },
 667         };
 668
 669         symbol_conf.use_callchain = true;
 670         symbol_conf.cumulate_callchain = true;
 671         perf_evsel__set_sample_bit(evsel, CALLCHAIN);
 672
 673         setup_sorting();
 674         callchain_register_param(&callchain_param);
 675
 676         err = add_hist_entries(hists, machine);
 677         if (err < 0)
 678                 goto out;
 679
 680         err = do_test(hists, expected, ARRAY_SIZE(expected),
 681                       expected_callchain, ARRAY_SIZE(expected_callchain));
 682
 683 out:
 684         del_hist_entries(hists);
 685         reset_output_field();
 686         return err;
 687 }
 688
 689 int test__hists_cumulate(void)
 690 {
 691         int err = TEST_FAIL;
 692         struct machines machines;
 693         struct machine *machine;
 694         struct perf_evsel *evsel;
 695         struct perf_evlist *evlist = perf_evlist__new();
 696         size_t i;
 697         test_fn_t testcases[] = {
 698                 test1,
 699                 test2,
 700                 test3,
 701                 test4,
 702         };
 703
 704         TEST_ASSERT_VAL("No memory", evlist);
 705
 706         err = parse_events(evlist, "cpu-clock", NULL);
 707         if (err)
 708                 goto out;
 709
 710         machines__init(&machines);
 711
 712         /* setup threads/dso/map/symbols also */
 713         machine = setup_fake_machine(&machines);
 714         if (!machine)
 715                 goto out;
 716
 717         if (verbose > 1)
 718                 machine__fprintf(machine, stderr);
 719
 720         evsel = perf_evlist__first(evlist);
 721
 722         for (i = 0; i < ARRAY_SIZE(testcases); i++) {
 723                 err = testcases[i](evsel, machine);
 724                 if (err < 0)
 725                         break;
 726         }
 727
 728 out:
 729         /* tear down everything */
 730         perf_evlist__delete(evlist);
 731         machines__exit(&machines);
 732
 733         return err;
 734 }