tools/perf/tests/hists_output.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "util/debug.h"
   3 #include "util/dso.h"
   4 #include "util/event.h"
   5 #include "util/map.h"
   6 #include "util/symbol.h"
   7 #include "util/sort.h"
   8 #include "util/evsel.h"
   9 #include "util/evlist.h"
  10 #include "util/machine.h"
  11 #include "util/thread.h"
  12 #include "util/parse-events.h"
  13 #include "tests/tests.h"
  14 #include "tests/hists_common.h"
  15 #include <linux/kernel.h>
  16
  17 struct sample {
  18         u32 cpu;
  19         u32 pid;
  20         u64 ip;
  21         struct thread *thread;
  22         struct map *map;
  23         struct symbol *sym;
  24 };
  25
  26 /* For the numbers, see hists_common.c */
  27 static struct sample fake_samples[] = {
  28         /* perf [kernel] schedule() */
  29         { .cpu = 0, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
  30         /* perf [perf]   main() */
  31         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
  32         /* perf [perf]   cmd_record() */
  33         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
  34         /* perf [libc]   malloc() */
  35         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
  36         /* perf [libc]   free() */
  37         { .cpu = 2, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
  38         /* perf [perf]   main() */
  39         { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
  40         /* perf [kernel] page_fault() */
  41         { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  42         /* bash [bash]   main() */
  43         { .cpu = 3, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
  44         /* bash [bash]   xmalloc() */
  45         { .cpu = 0, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
  46         /* bash [kernel] page_fault() */
  47         { .cpu = 1, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  48 };
  49
  50 static int add_hist_entries(struct hists *hists, struct machine *machine)
  51 {
  52         struct addr_location al;
  53         struct evsel *evsel = hists_to_evsel(hists);
  54         struct perf_sample sample = { .period = 100, };
  55         size_t i;
  56
  57         for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
  58                 struct hist_entry_iter iter = {
  59                         .evsel = evsel,
  60                         .sample = &sample,
  61                         .ops = &hist_iter_normal,
  62                         .hide_unresolved = false,
  63                 };
  64
  65                 sample.cpumode = PERF_RECORD_MISC_USER;
  66                 sample.cpu = fake_samples[i].cpu;
  67                 sample.pid = fake_samples[i].pid;
  68                 sample.tid = fake_samples[i].pid;
  69                 sample.ip = fake_samples[i].ip;
  70
  71                 if (machine__resolve(machine, &al, &sample) < 0)
  72                         goto out;
  73
  74                 if (hist_entry_iter__add(&iter, &al, sysctl_perf_event_max_stack,
  75                                          NULL) < 0) {
  76                         addr_location__put(&al);
  77                         goto out;
  78                 }
  79
  80                 fake_samples[i].thread = al.thread;
  81                 fake_samples[i].map = al.map;
  82                 fake_samples[i].sym = al.sym;
  83         }
  84
  85         return TEST_OK;
  86
  87 out:
  88         pr_debug("Not enough memory for adding a hist entry\n");
  89         return TEST_FAIL;
  90 }
  91
  92 static void del_hist_entries(struct hists *hists)
  93 {
  94         struct hist_entry *he;
  95         struct rb_root_cached *root_in;
  96         struct rb_root_cached *root_out;
  97         struct rb_node *node;
  98
  99         if (hists__has(hists, need_collapse))
 100                 root_in = &hists->entries_collapsed;
 101         else
 102                 root_in = hists->entries_in;
 103
 104         root_out = &hists->entries;
 105
 106         while (!RB_EMPTY_ROOT(&root_out->rb_root)) {
 107                 node = rb_first_cached(root_out);
 108
 109                 he = rb_entry(node, struct hist_entry, rb_node);
 110                 rb_erase_cached(node, root_out);
 111                 rb_erase_cached(&he->rb_node_in, root_in);
 112                 hist_entry__delete(he);
 113         }
 114 }
 115
 116 typedef int (*test_fn_t)(struct evsel *, struct machine *);
 117
 118 #define COMM(he)  (thread__comm_str(he->thread))
 119 #define DSO(he)   (he->ms.map->dso->short_name)
 120 #define SYM(he)   (he->ms.sym->name)
 121 #define CPU(he)   (he->cpu)
 122 #define PID(he)   (he->thread->tid)
 123
 124 /* default sort keys (no field) */
 125 static int test1(struct evsel *evsel, struct machine *machine)
 126 {
 127         int err;
 128         struct hists *hists = evsel__hists(evsel);
 129         struct hist_entry *he;
 130         struct rb_root_cached *root;
 131         struct rb_node *node;
 132
 133         field_order = NULL;
 134         sort_order = NULL; /* equivalent to sort_order = "comm,dso,sym" */
 135
 136         setup_sorting(NULL);
 137
 138         /*
 139          * expected output:
 140          *
 141          * Overhead  Command  Shared Object          Symbol
 142          * ========  =======  =============  ==============
 143          *   20.00%     perf  perf           [.] main
 144          *   10.00%     bash  [kernel]       [k] page_fault
 145          *   10.00%     bash  bash           [.] main
 146          *   10.00%     bash  bash           [.] xmalloc
 147          *   10.00%     perf  [kernel]       [k] page_fault
 148          *   10.00%     perf  [kernel]       [k] schedule
 149          *   10.00%     perf  libc           [.] free
 150          *   10.00%     perf  libc           [.] malloc
 151          *   10.00%     perf  perf           [.] cmd_record
 152          */
 153         err = add_hist_entries(hists, machine);
 154         if (err < 0)
 155                 goto out;
 156
 157         hists__collapse_resort(hists, NULL);
 158         evsel__output_resort(evsel, NULL);
 159
 160         if (verbose > 2) {
 161                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 162                 print_hists_out(hists);
 163         }
 164
 165         root = &hists->entries;
 166         node = rb_first_cached(root);
 167         he = rb_entry(node, struct hist_entry, rb_node);
 168         TEST_ASSERT_VAL("Invalid hist entry",
 169                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 170                         !strcmp(SYM(he), "main") && he->stat.period == 200);
 171
 172         node = rb_next(node);
 173         he = rb_entry(node, struct hist_entry, rb_node);
 174         TEST_ASSERT_VAL("Invalid hist entry",
 175                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 176                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 177
 178         node = rb_next(node);
 179         he = rb_entry(node, struct hist_entry, rb_node);
 180         TEST_ASSERT_VAL("Invalid hist entry",
 181                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 182                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 183
 184         node = rb_next(node);
 185         he = rb_entry(node, struct hist_entry, rb_node);
 186         TEST_ASSERT_VAL("Invalid hist entry",
 187                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 188                         !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
 189
 190         node = rb_next(node);
 191         he = rb_entry(node, struct hist_entry, rb_node);
 192         TEST_ASSERT_VAL("Invalid hist entry",
 193                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 194                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 195
 196         node = rb_next(node);
 197         he = rb_entry(node, struct hist_entry, rb_node);
 198         TEST_ASSERT_VAL("Invalid hist entry",
 199                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 200                         !strcmp(SYM(he), "schedule") && he->stat.period == 100);
 201
 202         node = rb_next(node);
 203         he = rb_entry(node, struct hist_entry, rb_node);
 204         TEST_ASSERT_VAL("Invalid hist entry",
 205                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 206                         !strcmp(SYM(he), "free") && he->stat.period == 100);
 207
 208         node = rb_next(node);
 209         he = rb_entry(node, struct hist_entry, rb_node);
 210         TEST_ASSERT_VAL("Invalid hist entry",
 211                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 212                         !strcmp(SYM(he), "malloc") && he->stat.period == 100);
 213
 214         node = rb_next(node);
 215         he = rb_entry(node, struct hist_entry, rb_node);
 216         TEST_ASSERT_VAL("Invalid hist entry",
 217                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 218                         !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
 219
 220 out:
 221         del_hist_entries(hists);
 222         reset_output_field();
 223         return err;
 224 }
 225
 226 /* mixed fields and sort keys */
 227 static int test2(struct evsel *evsel, struct machine *machine)
 228 {
 229         int err;
 230         struct hists *hists = evsel__hists(evsel);
 231         struct hist_entry *he;
 232         struct rb_root_cached *root;
 233         struct rb_node *node;
 234
 235         field_order = "overhead,cpu";
 236         sort_order = "pid";
 237
 238         setup_sorting(NULL);
 239
 240         /*
 241          * expected output:
 242          *
 243          * Overhead  CPU  Command:  Pid
 244          * ========  ===  =============
 245          *   30.00%    1  perf   :  100
 246          *   10.00%    0  perf   :  100
 247          *   10.00%    2  perf   :  100
 248          *   20.00%    2  perf   :  200
 249          *   10.00%    0  bash   :  300
 250          *   10.00%    1  bash   :  300
 251          *   10.00%    3  bash   :  300
 252          */
 253         err = add_hist_entries(hists, machine);
 254         if (err < 0)
 255                 goto out;
 256
 257         hists__collapse_resort(hists, NULL);
 258         evsel__output_resort(evsel, NULL);
 259
 260         if (verbose > 2) {
 261                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 262                 print_hists_out(hists);
 263         }
 264
 265         root = &hists->entries;
 266         node = rb_first_cached(root);
 267         he = rb_entry(node, struct hist_entry, rb_node);
 268         TEST_ASSERT_VAL("Invalid hist entry",
 269                         CPU(he) == 1 && PID(he) == 100 && he->stat.period == 300);
 270
 271         node = rb_next(node);
 272         he = rb_entry(node, struct hist_entry, rb_node);
 273         TEST_ASSERT_VAL("Invalid hist entry",
 274                         CPU(he) == 0 && PID(he) == 100 && he->stat.period == 100);
 275
 276 out:
 277         del_hist_entries(hists);
 278         reset_output_field();
 279         return err;
 280 }
 281
 282 /* fields only (no sort key) */
 283 static int test3(struct evsel *evsel, struct machine *machine)
 284 {
 285         int err;
 286         struct hists *hists = evsel__hists(evsel);
 287         struct hist_entry *he;
 288         struct rb_root_cached *root;
 289         struct rb_node *node;
 290
 291         field_order = "comm,overhead,dso";
 292         sort_order = NULL;
 293
 294         setup_sorting(NULL);
 295
 296         /*
 297          * expected output:
 298          *
 299          * Command  Overhead  Shared Object
 300          * =======  ========  =============
 301          *    bash    20.00%  bash
 302          *    bash    10.00%  [kernel]
 303          *    perf    30.00%  perf
 304          *    perf    20.00%  [kernel]
 305          *    perf    20.00%  libc
 306          */
 307         err = add_hist_entries(hists, machine);
 308         if (err < 0)
 309                 goto out;
 310
 311         hists__collapse_resort(hists, NULL);
 312         evsel__output_resort(evsel, NULL);
 313
 314         if (verbose > 2) {
 315                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 316                 print_hists_out(hists);
 317         }
 318
 319         root = &hists->entries;
 320         node = rb_first_cached(root);
 321         he = rb_entry(node, struct hist_entry, rb_node);
 322         TEST_ASSERT_VAL("Invalid hist entry",
 323                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 324                         he->stat.period == 200);
 325
 326         node = rb_next(node);
 327         he = rb_entry(node, struct hist_entry, rb_node);
 328         TEST_ASSERT_VAL("Invalid hist entry",
 329                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 330                         he->stat.period == 100);
 331
 332         node = rb_next(node);
 333         he = rb_entry(node, struct hist_entry, rb_node);
 334         TEST_ASSERT_VAL("Invalid hist entry",
 335                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 336                         he->stat.period == 300);
 337
 338         node = rb_next(node);
 339         he = rb_entry(node, struct hist_entry, rb_node);
 340         TEST_ASSERT_VAL("Invalid hist entry",
 341                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 342                         he->stat.period == 200);
 343
 344         node = rb_next(node);
 345         he = rb_entry(node, struct hist_entry, rb_node);
 346         TEST_ASSERT_VAL("Invalid hist entry",
 347                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 348                         he->stat.period == 200);
 349
 350 out:
 351         del_hist_entries(hists);
 352         reset_output_field();
 353         return err;
 354 }
 355
 356 /* handle duplicate 'dso' field */
 357 static int test4(struct evsel *evsel, struct machine *machine)
 358 {
 359         int err;
 360         struct hists *hists = evsel__hists(evsel);
 361         struct hist_entry *he;
 362         struct rb_root_cached *root;
 363         struct rb_node *node;
 364
 365         field_order = "dso,sym,comm,overhead,dso";
 366         sort_order = "sym";
 367
 368         setup_sorting(NULL);
 369
 370         /*
 371          * expected output:
 372          *
 373          * Shared Object          Symbol  Command  Overhead
 374          * =============  ==============  =======  ========
 375          *          perf  [.] cmd_record     perf    10.00%
 376          *          libc  [.] free           perf    10.00%
 377          *          bash  [.] main           bash    10.00%
 378          *          perf  [.] main           perf    20.00%
 379          *          libc  [.] malloc         perf    10.00%
 380          *      [kernel]  [k] page_fault     bash    10.00%
 381          *      [kernel]  [k] page_fault     perf    10.00%
 382          *      [kernel]  [k] schedule       perf    10.00%
 383          *          bash  [.] xmalloc        bash    10.00%
 384          */
 385         err = add_hist_entries(hists, machine);
 386         if (err < 0)
 387                 goto out;
 388
 389         hists__collapse_resort(hists, NULL);
 390         evsel__output_resort(evsel, NULL);
 391
 392         if (verbose > 2) {
 393                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 394                 print_hists_out(hists);
 395         }
 396
 397         root = &hists->entries;
 398         node = rb_first_cached(root);
 399         he = rb_entry(node, struct hist_entry, rb_node);
 400         TEST_ASSERT_VAL("Invalid hist entry",
 401                         !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "cmd_record") &&
 402                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 403
 404         node = rb_next(node);
 405         he = rb_entry(node, struct hist_entry, rb_node);
 406         TEST_ASSERT_VAL("Invalid hist entry",
 407                         !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "free") &&
 408                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 409
 410         node = rb_next(node);
 411         he = rb_entry(node, struct hist_entry, rb_node);
 412         TEST_ASSERT_VAL("Invalid hist entry",
 413                         !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "main") &&
 414                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 415
 416         node = rb_next(node);
 417         he = rb_entry(node, struct hist_entry, rb_node);
 418         TEST_ASSERT_VAL("Invalid hist entry",
 419                         !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "main") &&
 420                         !strcmp(COMM(he), "perf") && he->stat.period == 200);
 421
 422         node = rb_next(node);
 423         he = rb_entry(node, struct hist_entry, rb_node);
 424         TEST_ASSERT_VAL("Invalid hist entry",
 425                         !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "malloc") &&
 426                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 427
 428         node = rb_next(node);
 429         he = rb_entry(node, struct hist_entry, rb_node);
 430         TEST_ASSERT_VAL("Invalid hist entry",
 431                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
 432                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 433
 434         node = rb_next(node);
 435         he = rb_entry(node, struct hist_entry, rb_node);
 436         TEST_ASSERT_VAL("Invalid hist entry",
 437                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
 438                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 439
 440         node = rb_next(node);
 441         he = rb_entry(node, struct hist_entry, rb_node);
 442         TEST_ASSERT_VAL("Invalid hist entry",
 443                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "schedule") &&
 444                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 445
 446         node = rb_next(node);
 447         he = rb_entry(node, struct hist_entry, rb_node);
 448         TEST_ASSERT_VAL("Invalid hist entry",
 449                         !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "xmalloc") &&
 450                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 451
 452 out:
 453         del_hist_entries(hists);
 454         reset_output_field();
 455         return err;
 456 }
 457
 458 /* full sort keys w/o overhead field */
 459 static int test5(struct evsel *evsel, struct machine *machine)
 460 {
 461         int err;
 462         struct hists *hists = evsel__hists(evsel);
 463         struct hist_entry *he;
 464         struct rb_root_cached *root;
 465         struct rb_node *node;
 466
 467         field_order = "cpu,pid,comm,dso,sym";
 468         sort_order = "dso,pid";
 469
 470         setup_sorting(NULL);
 471
 472         /*
 473          * expected output:
 474          *
 475          * CPU  Command:  Pid  Command  Shared Object          Symbol
 476          * ===  =============  =======  =============  ==============
 477          *   0     perf:  100     perf       [kernel]  [k] schedule
 478          *   2     perf:  200     perf       [kernel]  [k] page_fault
 479          *   1     bash:  300     bash       [kernel]  [k] page_fault
 480          *   0     bash:  300     bash           bash  [.] xmalloc
 481          *   3     bash:  300     bash           bash  [.] main
 482          *   1     perf:  100     perf           libc  [.] malloc
 483          *   2     perf:  100     perf           libc  [.] free
 484          *   1     perf:  100     perf           perf  [.] cmd_record
 485          *   1     perf:  100     perf           perf  [.] main
 486          *   2     perf:  200     perf           perf  [.] main
 487          */
 488         err = add_hist_entries(hists, machine);
 489         if (err < 0)
 490                 goto out;
 491
 492         hists__collapse_resort(hists, NULL);
 493         evsel__output_resort(evsel, NULL);
 494
 495         if (verbose > 2) {
 496                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 497                 print_hists_out(hists);
 498         }
 499
 500         root = &hists->entries;
 501         node = rb_first_cached(root);
 502         he = rb_entry(node, struct hist_entry, rb_node);
 503
 504         TEST_ASSERT_VAL("Invalid hist entry",
 505                         CPU(he) == 0 && PID(he) == 100 &&
 506                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 507                         !strcmp(SYM(he), "schedule") && he->stat.period == 100);
 508
 509         node = rb_next(node);
 510         he = rb_entry(node, struct hist_entry, rb_node);
 511         TEST_ASSERT_VAL("Invalid hist entry",
 512                         CPU(he) == 2 && PID(he) == 200 &&
 513                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 514                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 515
 516         node = rb_next(node);
 517         he = rb_entry(node, struct hist_entry, rb_node);
 518         TEST_ASSERT_VAL("Invalid hist entry",
 519                         CPU(he) == 1 && PID(he) == 300 &&
 520                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 521                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 522
 523         node = rb_next(node);
 524         he = rb_entry(node, struct hist_entry, rb_node);
 525         TEST_ASSERT_VAL("Invalid hist entry",
 526                         CPU(he) == 0 && PID(he) == 300 &&
 527                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 528                         !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
 529
 530         node = rb_next(node);
 531         he = rb_entry(node, struct hist_entry, rb_node);
 532         TEST_ASSERT_VAL("Invalid hist entry",
 533                         CPU(he) == 3 && PID(he) == 300 &&
 534                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 535                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 536
 537         node = rb_next(node);
 538         he = rb_entry(node, struct hist_entry, rb_node);
 539         TEST_ASSERT_VAL("Invalid hist entry",
 540                         CPU(he) == 1 && PID(he) == 100 &&
 541                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 542                         !strcmp(SYM(he), "malloc") && he->stat.period == 100);
 543
 544         node = rb_next(node);
 545         he = rb_entry(node, struct hist_entry, rb_node);
 546         TEST_ASSERT_VAL("Invalid hist entry",
 547                         CPU(he) == 2 && PID(he) == 100 &&
 548                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 549                         !strcmp(SYM(he), "free") && he->stat.period == 100);
 550
 551         node = rb_next(node);
 552         he = rb_entry(node, struct hist_entry, rb_node);
 553         TEST_ASSERT_VAL("Invalid hist entry",
 554                         CPU(he) == 1 && PID(he) == 100 &&
 555                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 556                         !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
 557
 558         node = rb_next(node);
 559         he = rb_entry(node, struct hist_entry, rb_node);
 560         TEST_ASSERT_VAL("Invalid hist entry",
 561                         CPU(he) == 1 && PID(he) == 100 &&
 562                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 563                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 564
 565         node = rb_next(node);
 566         he = rb_entry(node, struct hist_entry, rb_node);
 567         TEST_ASSERT_VAL("Invalid hist entry",
 568                         CPU(he) == 2 && PID(he) == 200 &&
 569                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 570                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 571
 572 out:
 573         del_hist_entries(hists);
 574         reset_output_field();
 575         return err;
 576 }
 577
 578 int test__hists_output(struct test *test __maybe_unused, int subtest __maybe_unused)
 579 {
 580         int err = TEST_FAIL;
 581         struct machines machines;
 582         struct machine *machine;
 583         struct evsel *evsel;
 584         struct evlist *evlist = evlist__new();
 585         size_t i;
 586         test_fn_t testcases[] = {
 587                 test1,
 588                 test2,
 589                 test3,
 590                 test4,
 591                 test5,
 592         };
 593
 594         TEST_ASSERT_VAL("No memory", evlist);
 595
 596         err = parse_events(evlist, "cpu-clock", NULL);
 597         if (err)
 598                 goto out;
 599         err = TEST_FAIL;
 600
 601         machines__init(&machines);
 602
 603         /* setup threads/dso/map/symbols also */
 604         machine = setup_fake_machine(&machines);
 605         if (!machine)
 606                 goto out;
 607
 608         if (verbose > 1)
 609                 machine__fprintf(machine, stderr);
 610
 611         evsel = evlist__first(evlist);
 612
 613         for (i = 0; i < ARRAY_SIZE(testcases); i++) {
 614                 err = testcases[i](evsel, machine);
 615                 if (err < 0)
 616                         break;
 617         }
 618
 619 out:
 620         /* tear down everything */
 621         evlist__delete(evlist);
 622         machines__exit(&machines);
 623
 624         return err;
 625 }