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 #include "util/sample.h"
12
13 static int process_event(struct evlist **pevlist, union perf_event *event)
14 {
15 struct perf_sample sample;
16
17 if (event->header.type == PERF_RECORD_HEADER_ATTR) {
18 if (perf_event__process_attr(NULL, event, pevlist)) {
19 pr_debug("perf_event__process_attr failed\n");
20 return -1;
21 }
22 return 0;
23 }
24
25 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
26 return -1;
27
28 if (!*pevlist)
29 return -1;
30
31 if (evlist__parse_sample(*pevlist, event, &sample)) {
32 pr_debug("evlist__parse_sample failed\n");
33 return -1;
34 }
35
36 return 0;
37 }
38
39 static int process_events(union perf_event **events, size_t count)
40 {
41 struct evlist *evlist = NULL;
42 int err = 0;
43 size_t i;
44
45 for (i = 0; i < count && !err; i++)
46 err = process_event(&evlist, events[i]);
47
48 evlist__delete(evlist);
49
50 return err;
51 }
52
53 struct test_attr_event {
54 struct perf_event_header header;
55 struct perf_event_attr attr;
56 u64 id;
57 };
58
59 /**
60 * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
61 *
62 * This function tests parsing data produced on kernel's that do not support the
63 * sample_id_all bit. Without the sample_id_all bit, non-sample events (such as
64 * mmap events) do not have an id sample appended, and consequently logic
65 * designed to determine the id will not work. That case happens when there is
66 * more than one selected event, so this test processes three events: 2
67 * attributes representing the selected events and one mmap event.
68 *
69 * Return: %0 on success, %-1 if the test fails.
70 */
71 static int test__parse_no_sample_id_all(struct test_suite *test __maybe_unused,
72 int subtest __maybe_unused)
73 {
74 int err;
75
76 struct test_attr_event event1 = {
77 .header = {
78 .type = PERF_RECORD_HEADER_ATTR,
79 .size = sizeof(struct test_attr_event),
80 },
81 .id = 1,
82 };
83 struct test_attr_event event2 = {
84 .header = {
85 .type = PERF_RECORD_HEADER_ATTR,
86 .size = sizeof(struct test_attr_event),
87 },
88 .id = 2,
89 };
90 struct perf_record_mmap event3 = {
91 .header = {
92 .type = PERF_RECORD_MMAP,
93 .size = sizeof(struct perf_record_mmap),
94 },
95 };
96 union perf_event *events[] = {
97 (union perf_event *)&event1,
98 (union perf_event *)&event2,
99 (union perf_event *)&event3,
100 };
101
102 err = process_events(events, ARRAY_SIZE(events));
103 if (err)
104 return -1;
105
106 return 0;
107 }
108
109 DEFINE_SUITE("Parse with no sample_id_all bit set", parse_no_sample_id_all);
110
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.