tools/perf/tests/parse-no-sample-id-all.c

   1 #include <linux/types.h>
   2 #include <stddef.h>
   3
   4 #include "tests.h"
   5
   6 #include "event.h"
   7 #include "evlist.h"
   8 #include "header.h"
   9 #include "util.h"
  10
  11 static int process_event(struct perf_evlist **pevlist, union perf_event *event)
  12 {
  13         struct perf_sample sample;
  14
  15         if (event->header.type == PERF_RECORD_HEADER_ATTR) {
  16                 if (perf_event__process_attr(NULL, event, pevlist)) {
  17                         pr_debug("perf_event__process_attr failed\n");
  18                         return -1;
  19                 }
  20                 return 0;
  21         }
  22
  23         if (event->header.type >= PERF_RECORD_USER_TYPE_START)
  24                 return -1;
  25
  26         if (!*pevlist)
  27                 return -1;
  28
  29         if (perf_evlist__parse_sample(*pevlist, event, &sample)) {
  30                 pr_debug("perf_evlist__parse_sample failed\n");
  31                 return -1;
  32         }
  33
  34         return 0;
  35 }
  36
  37 static int process_events(union perf_event **events, size_t count)
  38 {
  39         struct perf_evlist *evlist = NULL;
  40         int err = 0;
  41         size_t i;
  42
  43         for (i = 0; i < count && !err; i++)
  44                 err = process_event(&evlist, events[i]);
  45
  46         if (evlist)
  47                 perf_evlist__delete(evlist);
  48
  49         return err;
  50 }
  51
  52 struct test_attr_event {
  53         struct attr_event attr;
  54         u64 id;
  55 };
  56
  57 /**
  58  * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
  59  *
  60  * This function tests parsing data produced on kernel's that do not support the
  61  * sample_id_all bit.  Without the sample_id_all bit, non-sample events (such as
  62  * mmap events) do not have an id sample appended, and consequently logic
  63  * designed to determine the id will not work.  That case happens when there is
  64  * more than one selected event, so this test processes three events: 2
  65  * attributes representing the selected events and one mmap event.
  66  *
  67  * Return: %0 on success, %-1 if the test fails.
  68  */
  69 int test__parse_no_sample_id_all(void)
  70 {
  71         int err;
  72
  73         struct test_attr_event event1 = {
  74                 .attr = {
  75                         .header = {
  76                                 .type = PERF_RECORD_HEADER_ATTR,
  77                                 .size = sizeof(struct test_attr_event),
  78                         },
  79                 },
  80                 .id = 1,
  81         };
  82         struct test_attr_event event2 = {
  83                 .attr = {
  84                         .header = {
  85                                 .type = PERF_RECORD_HEADER_ATTR,
  86                                 .size = sizeof(struct test_attr_event),
  87                         },
  88                 },
  89                 .id = 2,
  90         };
  91         struct mmap_event event3 = {
  92                 .header = {
  93                         .type = PERF_RECORD_MMAP,
  94                         .size = sizeof(struct mmap_event),
  95                 },
  96         };
  97         union perf_event *events[] = {
  98                 (union perf_event *)&event1,
  99                 (union perf_event *)&event2,
 100                 (union perf_event *)&event3,
 101         };
 102
 103         err = process_events(events, ARRAY_SIZE(events));
 104         if (err)
 105                 return -1;
 106
 107         return 0;
 108 }