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TOMOYO Linux Cross Reference
Linux/tools/perf/tests/hists_cumulate.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 #include "perf.h"
  3 #include "util/debug.h"
  4 #include "util/event.h"
  5 #include "util/symbol.h"
  6 #include "util/sort.h"
  7 #include "util/evsel.h"
  8 #include "util/evlist.h"
  9 #include "util/machine.h"
 10 #include "util/thread.h"
 11 #include "util/parse-events.h"
 12 #include "tests/tests.h"
 13 #include "tests/hists_common.h"
 14 #include <linux/kernel.h>
 15 
 16 struct sample {
 17         u32 pid;
 18         u64 ip;
 19         struct thread *thread;
 20         struct map *map;
 21         struct symbol *sym;
 22 };
 23 
 24 /* For the numbers, see hists_common.c */
 25 static struct sample fake_samples[] = {
 26         /* perf [kernel] schedule() */
 27         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
 28         /* perf [perf]   main() */
 29         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
 30         /* perf [perf]   cmd_record() */
 31         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
 32         /* perf [libc]   malloc() */
 33         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
 34         /* perf [libc]   free() */
 35         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
 36         /* perf [perf]   main() */
 37         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
 38         /* perf [kernel] page_fault() */
 39         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
 40         /* bash [bash]   main() */
 41         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
 42         /* bash [bash]   xmalloc() */
 43         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
 44         /* bash [kernel] page_fault() */
 45         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
 46 };
 47 
 48 /*
 49  * Will be casted to struct ip_callchain which has all 64 bit entries
 50  * of nr and ips[].
 51  */
 52 static u64 fake_callchains[][10] = {
 53         /*   schedule => run_command => main */
 54         { 3, FAKE_IP_KERNEL_SCHEDULE, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
 55         /*   main  */
 56         { 1, FAKE_IP_PERF_MAIN, },
 57         /*   cmd_record => run_command => main */
 58         { 3, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
 59         /*   malloc => cmd_record => run_command => main */
 60         { 4, FAKE_IP_LIBC_MALLOC, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
 61              FAKE_IP_PERF_MAIN, },
 62         /*   free => cmd_record => run_command => main */
 63         { 4, FAKE_IP_LIBC_FREE, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
 64              FAKE_IP_PERF_MAIN, },
 65         /*   main */
 66         { 1, FAKE_IP_PERF_MAIN, },
 67         /*   page_fault => sys_perf_event_open => run_command => main */
 68         { 4, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN,
 69              FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
 70         /*   main */
 71         { 1, FAKE_IP_BASH_MAIN, },
 72         /*   xmalloc => malloc => xmalloc => malloc => xmalloc => main */
 73         { 6, FAKE_IP_BASH_XMALLOC, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC,
 74              FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, FAKE_IP_BASH_MAIN, },
 75         /*   page_fault => malloc => main */
 76         { 3, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_MAIN, },
 77 };
 78 
 79 static int add_hist_entries(struct hists *hists, struct machine *machine)
 80 {
 81         struct addr_location al;
 82         struct perf_evsel *evsel = hists_to_evsel(hists);
 83         struct perf_sample sample = { .period = 1000, };
 84         size_t i;
 85 
 86         for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
 87                 struct hist_entry_iter iter = {
 88                         .evsel = evsel,
 89                         .sample = &sample,
 90                         .hide_unresolved = false,
 91                 };
 92 
 93                 if (symbol_conf.cumulate_callchain)
 94                         iter.ops = &hist_iter_cumulative;
 95                 else
 96                         iter.ops = &hist_iter_normal;
 97 
 98                 sample.cpumode = PERF_RECORD_MISC_USER;
 99                 sample.pid = fake_samples[i].pid;
100                 sample.tid = fake_samples[i].pid;
101                 sample.ip = fake_samples[i].ip;
102                 sample.callchain = (struct ip_callchain *)fake_callchains[i];
103 
104                 if (machine__resolve(machine, &al, &sample) < 0)
105                         goto out;
106 
107                 if (hist_entry_iter__add(&iter, &al, sysctl_perf_event_max_stack,
108                                          NULL) < 0) {
109                         addr_location__put(&al);
110                         goto out;
111                 }
112 
113                 fake_samples[i].thread = al.thread;
114                 fake_samples[i].map = al.map;
115                 fake_samples[i].sym = al.sym;
116         }
117 
118         return TEST_OK;
119 
120 out:
121         pr_debug("Not enough memory for adding a hist entry\n");
122         return TEST_FAIL;
123 }
124 
125 static void del_hist_entries(struct hists *hists)
126 {
127         struct hist_entry *he;
128         struct rb_root *root_in;
129         struct rb_root *root_out;
130         struct rb_node *node;
131 
132         if (hists__has(hists, need_collapse))
133                 root_in = &hists->entries_collapsed;
134         else
135                 root_in = hists->entries_in;
136 
137         root_out = &hists->entries;
138 
139         while (!RB_EMPTY_ROOT(root_out)) {
140                 node = rb_first(root_out);
141 
142                 he = rb_entry(node, struct hist_entry, rb_node);
143                 rb_erase(node, root_out);
144                 rb_erase(&he->rb_node_in, root_in);
145                 hist_entry__delete(he);
146         }
147 }
148 
149 typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
150 
151 #define COMM(he)  (thread__comm_str(he->thread))
152 #define DSO(he)   (he->ms.map->dso->short_name)
153 #define SYM(he)   (he->ms.sym->name)
154 #define CPU(he)   (he->cpu)
155 #define PID(he)   (he->thread->tid)
156 #define DEPTH(he) (he->callchain->max_depth)
157 #define CDSO(cl)  (cl->ms.map->dso->short_name)
158 #define CSYM(cl)  (cl->ms.sym->name)
159 
160 struct result {
161         u64 children;
162         u64 self;
163         const char *comm;
164         const char *dso;
165         const char *sym;
166 };
167 
168 struct callchain_result {
169         u64 nr;
170         struct {
171                 const char *dso;
172                 const char *sym;
173         } node[10];
174 };
175 
176 static int do_test(struct hists *hists, struct result *expected, size_t nr_expected,
177                    struct callchain_result *expected_callchain, size_t nr_callchain)
178 {
179         char buf[32];
180         size_t i, c;
181         struct hist_entry *he;
182         struct rb_root *root;
183         struct rb_node *node;
184         struct callchain_node *cnode;
185         struct callchain_list *clist;
186 
187         /*
188          * adding and deleting hist entries must be done outside of this
189          * function since TEST_ASSERT_VAL() returns in case of failure.
190          */
191         hists__collapse_resort(hists, NULL);
192         perf_evsel__output_resort(hists_to_evsel(hists), NULL);
193 
194         if (verbose > 2) {
195                 pr_info("use callchain: %d, cumulate callchain: %d\n",
196                         symbol_conf.use_callchain,
197                         symbol_conf.cumulate_callchain);
198                 print_hists_out(hists);
199         }
200 
201         root = &hists->entries;
202         for (node = rb_first(root), i = 0;
203              node && (he = rb_entry(node, struct hist_entry, rb_node));
204              node = rb_next(node), i++) {
205                 scnprintf(buf, sizeof(buf), "Invalid hist entry #%zd", i);
206 
207                 TEST_ASSERT_VAL("Incorrect number of hist entry",
208                                 i < nr_expected);
209                 TEST_ASSERT_VAL(buf, he->stat.period == expected[i].self &&
210                                 !strcmp(COMM(he), expected[i].comm) &&
211                                 !strcmp(DSO(he), expected[i].dso) &&
212                                 !strcmp(SYM(he), expected[i].sym));
213 
214                 if (symbol_conf.cumulate_callchain)
215                         TEST_ASSERT_VAL(buf, he->stat_acc->period == expected[i].children);
216 
217                 if (!symbol_conf.use_callchain)
218                         continue;
219 
220                 /* check callchain entries */
221                 root = &he->callchain->node.rb_root;
222 
223                 TEST_ASSERT_VAL("callchains expected", !RB_EMPTY_ROOT(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(NULL);
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(NULL);
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(NULL);
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(NULL);
674 
675         callchain_param = callchain_param_default;
676         callchain_register_param(&callchain_param);
677 
678         err = add_hist_entries(hists, machine);
679         if (err < 0)
680                 goto out;
681 
682         err = do_test(hists, expected, ARRAY_SIZE(expected),
683                       expected_callchain, ARRAY_SIZE(expected_callchain));
684 
685 out:
686         del_hist_entries(hists);
687         reset_output_field();
688         return err;
689 }
690 
691 int test__hists_cumulate(struct test *test __maybe_unused, int subtest __maybe_unused)
692 {
693         int err = TEST_FAIL;
694         struct machines machines;
695         struct machine *machine;
696         struct perf_evsel *evsel;
697         struct perf_evlist *evlist = perf_evlist__new();
698         size_t i;
699         test_fn_t testcases[] = {
700                 test1,
701                 test2,
702                 test3,
703                 test4,
704         };
705 
706         TEST_ASSERT_VAL("No memory", evlist);
707 
708         err = parse_events(evlist, "cpu-clock", NULL);
709         if (err)
710                 goto out;
711         err = TEST_FAIL;
712 
713         machines__init(&machines);
714 
715         /* setup threads/dso/map/symbols also */
716         machine = setup_fake_machine(&machines);
717         if (!machine)
718                 goto out;
719 
720         if (verbose > 1)
721                 machine__fprintf(machine, stderr);
722 
723         evsel = perf_evlist__first(evlist);
724 
725         for (i = 0; i < ARRAY_SIZE(testcases); i++) {
726                 err = testcases[i](evsel, machine);
727                 if (err < 0)
728                         break;
729         }
730 
731 out:
732         /* tear down everything */
733         perf_evlist__delete(evlist);
734         machines__exit(&machines);
735 
736         return err;
737 }
738 

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