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 #include <linux/kernel.h>
  13
  14 struct sample {
  15         u32 pid;
  16         u64 ip;
  17         struct thread *thread;
  18         struct map *map;
  19         struct symbol *sym;
  20         int socket;
  21 };
  22
  23 /* For the numbers, see hists_common.c */
  24 static struct sample fake_samples[] = {
  25         /* perf [kernel] schedule() */
  26         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, .socket = 0 },
  27         /* perf [perf]   main() */
  28         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, .socket = 0 },
  29         /* perf [libc]   malloc() */
  30         { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, .socket = 0 },
  31         /* perf [perf]   main() */
  32         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, .socket = 0 }, /* will be merged */
  33         /* perf [perf]   cmd_record() */
  34         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, .socket = 1 },
  35         /* perf [kernel] page_fault() */
  36         { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 1 },
  37         /* bash [bash]   main() */
  38         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, .socket = 2 },
  39         /* bash [bash]   xmalloc() */
  40         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, .socket = 2 },
  41         /* bash [libc]   malloc() */
  42         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_MALLOC, .socket = 3 },
  43         /* bash [kernel] page_fault() */
  44         { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 3 },
  45 };
  46
  47 static int add_hist_entries(struct perf_evlist *evlist,
  48                             struct machine *machine)
  49 {
  50         struct perf_evsel *evsel;
  51         struct addr_location al;
  52         struct perf_sample sample = { .period = 100, };
  53         size_t i;
  54
  55         /*
  56          * each evsel will have 10 samples but the 4th sample
  57          * (perf [perf] main) will be collapsed to an existing entry
  58          * so total 9 entries will be in the tree.
  59          */
  60         evlist__for_each_entry(evlist, evsel) {
  61                 for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
  62                         struct hist_entry_iter iter = {
  63                                 .evsel = evsel,
  64                                 .sample = &sample,
  65                                 .ops = &hist_iter_normal,
  66                                 .hide_unresolved = false,
  67                         };
  68                         struct hists *hists = evsel__hists(evsel);
  69
  70                         /* make sure it has no filter at first */
  71                         hists->thread_filter = NULL;
  72                         hists->dso_filter = NULL;
  73                         hists->symbol_filter_str = NULL;
  74
  75                         sample.cpumode = PERF_RECORD_MISC_USER;
  76                         sample.pid = fake_samples[i].pid;
  77                         sample.tid = fake_samples[i].pid;
  78                         sample.ip = fake_samples[i].ip;
  79
  80                         if (machine__resolve(machine, &al, &sample) < 0)
  81                                 goto out;
  82
  83                         al.socket = fake_samples[i].socket;
  84                         if (hist_entry_iter__add(&iter, &al,
  85                                                  sysctl_perf_event_max_stack, NULL) < 0) {
  86                                 addr_location__put(&al);
  87                                 goto out;
  88                         }
  89
  90                         fake_samples[i].thread = al.thread;
  91                         fake_samples[i].map = al.map;
  92                         fake_samples[i].sym = al.sym;
  93                 }
  94         }
  95
  96         return 0;
  97
  98 out:
  99         pr_debug("Not enough memory for adding a hist entry\n");
 100         return TEST_FAIL;
 101 }
 102
 103 int test__hists_filter(int subtest __maybe_unused)
 104 {
 105         int err = TEST_FAIL;
 106         struct machines machines;
 107         struct machine *machine;
 108         struct perf_evsel *evsel;
 109         struct perf_evlist *evlist = perf_evlist__new();
 110
 111         TEST_ASSERT_VAL("No memory", evlist);
 112
 113         err = parse_events(evlist, "cpu-clock", NULL);
 114         if (err)
 115                 goto out;
 116         err = parse_events(evlist, "task-clock", NULL);
 117         if (err)
 118                 goto out;
 119         err = TEST_FAIL;
 120
 121         /* default sort order (comm,dso,sym) will be used */
 122         if (setup_sorting(NULL) < 0)
 123                 goto out;
 124
 125         machines__init(&machines);
 126
 127         /* setup threads/dso/map/symbols also */
 128         machine = setup_fake_machine(&machines);
 129         if (!machine)
 130                 goto out;
 131
 132         if (verbose > 1)
 133                 machine__fprintf(machine, stderr);
 134
 135         /* process sample events */
 136         err = add_hist_entries(evlist, machine);
 137         if (err < 0)
 138                 goto out;
 139
 140         evlist__for_each_entry(evlist, evsel) {
 141                 struct hists *hists = evsel__hists(evsel);
 142
 143                 hists__collapse_resort(hists, NULL);
 144                 perf_evsel__output_resort(evsel, NULL);
 145
 146                 if (verbose > 2) {
 147                         pr_info("Normal histogram\n");
 148                         print_hists_out(hists);
 149                 }
 150
 151                 TEST_ASSERT_VAL("Invalid nr samples",
 152                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 153                 TEST_ASSERT_VAL("Invalid nr hist entries",
 154                                 hists->nr_entries == 9);
 155                 TEST_ASSERT_VAL("Invalid total period",
 156                                 hists->stats.total_period == 1000);
 157                 TEST_ASSERT_VAL("Unmatched nr samples",
 158                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] ==
 159                                 hists->stats.nr_non_filtered_samples);
 160                 TEST_ASSERT_VAL("Unmatched nr hist entries",
 161                                 hists->nr_entries == hists->nr_non_filtered_entries);
 162                 TEST_ASSERT_VAL("Unmatched total period",
 163                                 hists->stats.total_period ==
 164                                 hists->stats.total_non_filtered_period);
 165
 166                 /* now applying thread filter for 'bash' */
 167                 hists->thread_filter = fake_samples[9].thread;
 168                 hists__filter_by_thread(hists);
 169
 170                 if (verbose > 2) {
 171                         pr_info("Histogram for thread filter\n");
 172                         print_hists_out(hists);
 173                 }
 174
 175                 /* normal stats should be invariant */
 176                 TEST_ASSERT_VAL("Invalid nr samples",
 177                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 178                 TEST_ASSERT_VAL("Invalid nr hist entries",
 179                                 hists->nr_entries == 9);
 180                 TEST_ASSERT_VAL("Invalid total period",
 181                                 hists->stats.total_period == 1000);
 182
 183                 /* but filter stats are changed */
 184                 TEST_ASSERT_VAL("Unmatched nr samples for thread filter",
 185                                 hists->stats.nr_non_filtered_samples == 4);
 186                 TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter",
 187                                 hists->nr_non_filtered_entries == 4);
 188                 TEST_ASSERT_VAL("Unmatched total period for thread filter",
 189                                 hists->stats.total_non_filtered_period == 400);
 190
 191                 /* remove thread filter first */
 192                 hists->thread_filter = NULL;
 193                 hists__filter_by_thread(hists);
 194
 195                 /* now applying dso filter for 'kernel' */
 196                 hists->dso_filter = fake_samples[0].map->dso;
 197                 hists__filter_by_dso(hists);
 198
 199                 if (verbose > 2) {
 200                         pr_info("Histogram for dso filter\n");
 201                         print_hists_out(hists);
 202                 }
 203
 204                 /* normal stats should be invariant */
 205                 TEST_ASSERT_VAL("Invalid nr samples",
 206                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 207                 TEST_ASSERT_VAL("Invalid nr hist entries",
 208                                 hists->nr_entries == 9);
 209                 TEST_ASSERT_VAL("Invalid total period",
 210                                 hists->stats.total_period == 1000);
 211
 212                 /* but filter stats are changed */
 213                 TEST_ASSERT_VAL("Unmatched nr samples for dso filter",
 214                                 hists->stats.nr_non_filtered_samples == 3);
 215                 TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter",
 216                                 hists->nr_non_filtered_entries == 3);
 217                 TEST_ASSERT_VAL("Unmatched total period for dso filter",
 218                                 hists->stats.total_non_filtered_period == 300);
 219
 220                 /* remove dso filter first */
 221                 hists->dso_filter = NULL;
 222                 hists__filter_by_dso(hists);
 223
 224                 /*
 225                  * now applying symbol filter for 'main'.  Also note that
 226                  * there's 3 samples that have 'main' symbol but the 4th
 227                  * entry of fake_samples was collapsed already so it won't
 228                  * be counted as a separate entry but the sample count and
 229                  * total period will be remained.
 230                  */
 231                 hists->symbol_filter_str = "main";
 232                 hists__filter_by_symbol(hists);
 233
 234                 if (verbose > 2) {
 235                         pr_info("Histogram for symbol filter\n");
 236                         print_hists_out(hists);
 237                 }
 238
 239                 /* normal stats should be invariant */
 240                 TEST_ASSERT_VAL("Invalid nr samples",
 241                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 242                 TEST_ASSERT_VAL("Invalid nr hist entries",
 243                                 hists->nr_entries == 9);
 244                 TEST_ASSERT_VAL("Invalid total period",
 245                                 hists->stats.total_period == 1000);
 246
 247                 /* but filter stats are changed */
 248                 TEST_ASSERT_VAL("Unmatched nr samples for symbol filter",
 249                                 hists->stats.nr_non_filtered_samples == 3);
 250                 TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter",
 251                                 hists->nr_non_filtered_entries == 2);
 252                 TEST_ASSERT_VAL("Unmatched total period for symbol filter",
 253                                 hists->stats.total_non_filtered_period == 300);
 254
 255                 /* remove symbol filter first */
 256                 hists->symbol_filter_str = NULL;
 257                 hists__filter_by_symbol(hists);
 258
 259                 /* now applying socket filters */
 260                 hists->socket_filter = 2;
 261                 hists__filter_by_socket(hists);
 262
 263                 if (verbose > 2) {
 264                         pr_info("Histogram for socket filters\n");
 265                         print_hists_out(hists);
 266                 }
 267
 268                 /* normal stats should be invariant */
 269                 TEST_ASSERT_VAL("Invalid nr samples",
 270                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 271                 TEST_ASSERT_VAL("Invalid nr hist entries",
 272                                 hists->nr_entries == 9);
 273                 TEST_ASSERT_VAL("Invalid total period",
 274                                 hists->stats.total_period == 1000);
 275
 276                 /* but filter stats are changed */
 277                 TEST_ASSERT_VAL("Unmatched nr samples for socket filter",
 278                                 hists->stats.nr_non_filtered_samples == 2);
 279                 TEST_ASSERT_VAL("Unmatched nr hist entries for socket filter",
 280                                 hists->nr_non_filtered_entries == 2);
 281                 TEST_ASSERT_VAL("Unmatched total period for socket filter",
 282                                 hists->stats.total_non_filtered_period == 200);
 283
 284                 /* remove socket filter first */
 285                 hists->socket_filter = -1;
 286                 hists__filter_by_socket(hists);
 287
 288                 /* now applying all filters at once. */
 289                 hists->thread_filter = fake_samples[1].thread;
 290                 hists->dso_filter = fake_samples[1].map->dso;
 291                 hists__filter_by_thread(hists);
 292                 hists__filter_by_dso(hists);
 293
 294                 if (verbose > 2) {
 295                         pr_info("Histogram for all filters\n");
 296                         print_hists_out(hists);
 297                 }
 298
 299                 /* normal stats should be invariant */
 300                 TEST_ASSERT_VAL("Invalid nr samples",
 301                                 hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
 302                 TEST_ASSERT_VAL("Invalid nr hist entries",
 303                                 hists->nr_entries == 9);
 304                 TEST_ASSERT_VAL("Invalid total period",
 305                                 hists->stats.total_period == 1000);
 306
 307                 /* but filter stats are changed */
 308                 TEST_ASSERT_VAL("Unmatched nr samples for all filter",
 309                                 hists->stats.nr_non_filtered_samples == 2);
 310                 TEST_ASSERT_VAL("Unmatched nr hist entries for all filter",
 311                                 hists->nr_non_filtered_entries == 1);
 312                 TEST_ASSERT_VAL("Unmatched total period for all filter",
 313                                 hists->stats.total_non_filtered_period == 200);
 314         }
 315
 316
 317         err = TEST_OK;
 318
 319 out:
 320         /* tear down everything */
 321         perf_evlist__delete(evlist);
 322         reset_output_field();
 323         machines__exit(&machines);
 324
 325         return err;
 326 }