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

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