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
process_event(struct evlist ** pevlist,union perf_event * event)12 static 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 (perf_evlist__parse_sample(*pevlist, event, &sample)) {
31 pr_debug("perf_evlist__parse_sample failed\n");
32 return -1;
33 }
34
35 return 0;
36 }
37
process_events(union perf_event ** events,size_t count)38 static 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
52 struct 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 */
test__parse_no_sample_id_all(struct test * test __maybe_unused,int subtest __maybe_unused)70 int 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
