tools/perf/tests/hists_filter.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         int socket;
  20 };
  21
  22 /* For the numbers, see hists_common.c */
  23 static struct sample fake_samples[] = {
  24         /* perf [kernel] schedule() */
  25         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, .socket = 0 },
  26         /* perf [perf]   main() */
  27         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, .socket = 0 },
  28         /* perf [libc]   malloc() */
  29         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, .socket = 0 },
  30         /* perf [perf]   main() */
  31         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, .socket = 0 }, /* will be merged */
  32         /* perf [perf]   cmd_record() */
  33         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, .socket = 1 },
  34         /* perf [kernel] page_fault() */
  35         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 1 },
  36         /* bash [bash]   main() */
  37         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, .socket = 2 },
  38         /* bash [bash]   xmalloc() */
  39         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, .socket = 2 },
  40         /* bash [libc]   malloc() */
  41         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_MALLOC, .socket = 3 },
  42         /* bash [kernel] page_fault() */
  43         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 3 },
  44 };
  45
  46 static int add_hist_entries(struct perf_evlist *evlist,
  47                             struct machine *machine)
  48 {
  49         struct perf_evsel *evsel;
  50         struct addr_location al;
  51         struct perf_sample sample = { .period = 100, };
  52         size_t i;
  53
  54         /*
  55          * each evsel will have 10 samples but the 4th sample
  56          * (perf [perf] main) will be collapsed to an existing entry
  57          * so total 9 entries will be in the tree.
  58          */
  59         evlist__for_each(evlist, evsel) {
  60                 for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
  61                         struct hist_entry_iter iter = {
  62                                 .evsel = evsel,
  63                                 .sample = &sample,
  64                                 .ops = &hist_iter_normal,
  65                                 .hide_unresolved = false,
  66                         };
  67                         struct hists *hists = evsel__hists(evsel);
  68
  69                         /* make sure it has no filter at first */
  70                         hists->thread_filter = NULL;
  71                         hists->dso_filter = NULL;
  72                         hists->symbol_filter_str = NULL;
  73
  74                         sample.cpumode = PERF_RECORD_MISC_USER;
  75                         sample.pid = fake_samples[i].pid;
  76                         sample.tid = fake_samples[i].pid;
  77                         sample.ip = fake_samples[i].ip;
  78
  79                         if (machine__resolve(machine, &al, &sample) < 0)
  80                                 goto out;
  81
  82                         al.socket = fake_samples[i].socket;
  83                         if (hist_entry_iter__add(&iter, &al,
  84                                                  sysctl_perf_event_max_stack, NULL) < 0) {
  85                                 addr_location__put(&al);
  86                                 goto out;
  87                         }
  88
  89                         fake_samples[i].thread = al.thread;
  90                         fake_samples[i].map = al.map;
  91                         fake_samples[i].sym = al.sym;
  92                 }
  93         }
  94
  95         return 0;
  96
  97 out:
  98         pr_debug("Not enough memory for adding a hist entry\n");
  99         return TEST_FAIL;
 100 }
 101
 102 int test__hists_filter(int subtest __maybe_unused)
 103 {
 104         int err = TEST_FAIL;
 105         struct machines machines;
 106         struct machine *machine;
 107         struct perf_evsel *evsel;
 108         struct perf_evlist *evlist = perf_evlist__new();
 109
 110         TEST_ASSERT_VAL("No memory", evlist);
 111
 112         err = parse_events(evlist, "cpu-clock", NULL);
 113         if (err)
 114                 goto out;
 115         err = parse_events(evlist, "task-clock", NULL);
 116         if (err)
 117                 goto out;
 118         err = TEST_FAIL;
 119
 120         /* default sort order (comm,dso,sym) will be used */
 121         if (setup_sorting(NULL) < 0)
 122                 goto out;
 123
 124         machines__init(&machines);
 125
 126         /* setup threads/dso/map/symbols also */
 127         machine = setup_fake_machine(&machines);
 128         if (!machine)
 129                 goto out;
 130
 131         if (verbose > 1)
 132                 machine__fprintf(machine, stderr);
 133
 134         /* process sample events */
 135         err = add_hist_entries(evlist, machine);
 136         if (err < 0)
 137                 goto out;
 138
 139         evlist__for_each(evlist, evsel) {
 140                 struct hists *hists = evsel__hists(evsel);
 141
 142                 hists__collapse_resort(hists, NULL);
 143                 perf_evsel__output_resort(evsel, NULL);
 144
 145                 if (verbose > 2) {
 146                         pr_info("Normal histogram\n");
 147                         print_hists_out(hists);
 148                 }
 149
 150                 TEST_ASSERT_VAL("Invalid nr samples",
 151                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 152                 TEST_ASSERT_VAL("Invalid nr hist entries",
 153                                 hists->nr_entries == 9);
 154                 TEST_ASSERT_VAL("Invalid total period",
 155                                 hists->stats.total_period == 1000);
 156                 TEST_ASSERT_VAL("Unmatched nr samples",
 157                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] ==
 158                                 hists->stats.nr_non_filtered_samples);
 159                 TEST_ASSERT_VAL("Unmatched nr hist entries",
 160                                 hists->nr_entries == hists->nr_non_filtered_entries);
 161                 TEST_ASSERT_VAL("Unmatched total period",
 162                                 hists->stats.total_period ==
 163                                 hists->stats.total_non_filtered_period);
 164
 165                 /* now applying thread filter for 'bash' */
 166                 hists->thread_filter = fake_samples[9].thread;
 167                 hists__filter_by_thread(hists);
 168
 169                 if (verbose > 2) {
 170                         pr_info("Histogram for thread filter\n");
 171                         print_hists_out(hists);
 172                 }
 173
 174                 /* normal stats should be invariant */
 175                 TEST_ASSERT_VAL("Invalid nr samples",
 176                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 177                 TEST_ASSERT_VAL("Invalid nr hist entries",
 178                                 hists->nr_entries == 9);
 179                 TEST_ASSERT_VAL("Invalid total period",
 180                                 hists->stats.total_period == 1000);
 181
 182                 /* but filter stats are changed */
 183                 TEST_ASSERT_VAL("Unmatched nr samples for thread filter",
 184                                 hists->stats.nr_non_filtered_samples == 4);
 185                 TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter",
 186                                 hists->nr_non_filtered_entries == 4);
 187                 TEST_ASSERT_VAL("Unmatched total period for thread filter",
 188                                 hists->stats.total_non_filtered_period == 400);
 189
 190                 /* remove thread filter first */
 191                 hists->thread_filter = NULL;
 192                 hists__filter_by_thread(hists);
 193
 194                 /* now applying dso filter for 'kernel' */
 195                 hists->dso_filter = fake_samples[0].map->dso;
 196                 hists__filter_by_dso(hists);
 197
 198                 if (verbose > 2) {
 199                         pr_info("Histogram for dso filter\n");
 200                         print_hists_out(hists);
 201                 }
 202
 203                 /* normal stats should be invariant */
 204                 TEST_ASSERT_VAL("Invalid nr samples",
 205                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 206                 TEST_ASSERT_VAL("Invalid nr hist entries",
 207                                 hists->nr_entries == 9);
 208                 TEST_ASSERT_VAL("Invalid total period",
 209                                 hists->stats.total_period == 1000);
 210
 211                 /* but filter stats are changed */
 212                 TEST_ASSERT_VAL("Unmatched nr samples for dso filter",
 213                                 hists->stats.nr_non_filtered_samples == 3);
 214                 TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter",
 215                                 hists->nr_non_filtered_entries == 3);
 216                 TEST_ASSERT_VAL("Unmatched total period for dso filter",
 217                                 hists->stats.total_non_filtered_period == 300);
 218
 219                 /* remove dso filter first */
 220                 hists->dso_filter = NULL;
 221                 hists__filter_by_dso(hists);
 222
 223                 /*
 224                  * now applying symbol filter for 'main'.  Also note that
 225                  * there's 3 samples that have 'main' symbol but the 4th
 226                  * entry of fake_samples was collapsed already so it won't
 227                  * be counted as a separate entry but the sample count and
 228                  * total period will be remained.
 229                  */
 230                 hists->symbol_filter_str = "main";
 231                 hists__filter_by_symbol(hists);
 232
 233                 if (verbose > 2) {
 234                         pr_info("Histogram for symbol filter\n");
 235                         print_hists_out(hists);
 236                 }
 237
 238                 /* normal stats should be invariant */
 239                 TEST_ASSERT_VAL("Invalid nr samples",
 240                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 241                 TEST_ASSERT_VAL("Invalid nr hist entries",
 242                                 hists->nr_entries == 9);
 243                 TEST_ASSERT_VAL("Invalid total period",
 244                                 hists->stats.total_period == 1000);
 245
 246                 /* but filter stats are changed */
 247                 TEST_ASSERT_VAL("Unmatched nr samples for symbol filter",
 248                                 hists->stats.nr_non_filtered_samples == 3);
 249                 TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter",
 250                                 hists->nr_non_filtered_entries == 2);
 251                 TEST_ASSERT_VAL("Unmatched total period for symbol filter",
 252                                 hists->stats.total_non_filtered_period == 300);
 253
 254                 /* remove symbol filter first */
 255                 hists->symbol_filter_str = NULL;
 256                 hists__filter_by_symbol(hists);
 257
 258                 /* now applying socket filters */
 259                 hists->socket_filter = 2;
 260                 hists__filter_by_socket(hists);
 261
 262                 if (verbose > 2) {
 263                         pr_info("Histogram for socket filters\n");
 264                         print_hists_out(hists);
 265                 }
 266
 267                 /* normal stats should be invariant */
 268                 TEST_ASSERT_VAL("Invalid nr samples",
 269                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 270                 TEST_ASSERT_VAL("Invalid nr hist entries",
 271                                 hists->nr_entries == 9);
 272                 TEST_ASSERT_VAL("Invalid total period",
 273                                 hists->stats.total_period == 1000);
 274
 275                 /* but filter stats are changed */
 276                 TEST_ASSERT_VAL("Unmatched nr samples for socket filter",
 277                                 hists->stats.nr_non_filtered_samples == 2);
 278                 TEST_ASSERT_VAL("Unmatched nr hist entries for socket filter",
 279                                 hists->nr_non_filtered_entries == 2);
 280                 TEST_ASSERT_VAL("Unmatched total period for socket filter",
 281                                 hists->stats.total_non_filtered_period == 200);
 282
 283                 /* remove socket filter first */
 284                 hists->socket_filter = -1;
 285                 hists__filter_by_socket(hists);
 286
 287                 /* now applying all filters at once. */
 288                 hists->thread_filter = fake_samples[1].thread;
 289                 hists->dso_filter = fake_samples[1].map->dso;
 290                 hists__filter_by_thread(hists);
 291                 hists__filter_by_dso(hists);
 292
 293                 if (verbose > 2) {
 294                         pr_info("Histogram for all filters\n");
 295                         print_hists_out(hists);
 296                 }
 297
 298                 /* normal stats should be invariant */
 299                 TEST_ASSERT_VAL("Invalid nr samples",
 300                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 301                 TEST_ASSERT_VAL("Invalid nr hist entries",
 302                                 hists->nr_entries == 9);
 303                 TEST_ASSERT_VAL("Invalid total period",
 304                                 hists->stats.total_period == 1000);
 305
 306                 /* but filter stats are changed */
 307                 TEST_ASSERT_VAL("Unmatched nr samples for all filter",
 308                                 hists->stats.nr_non_filtered_samples == 2);
 309                 TEST_ASSERT_VAL("Unmatched nr hist entries for all filter",
 310                                 hists->nr_non_filtered_entries == 1);
 311                 TEST_ASSERT_VAL("Unmatched total period for all filter",
 312                                 hists->stats.total_non_filtered_period == 200);
 313         }
 314
 315
 316         err = TEST_OK;
 317
 318 out:
 319         /* tear down everything */
 320         perf_evlist__delete(evlist);
 321         reset_output_field();
 322         machines__exit(&machines);
 323
 324         return err;
 325 }