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 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 (evlist__parse_sample(*pevlist, event, &sample)) { 31 pr_debug("evlist__parse_sample failed\n"); 32 return -1; 33 } 34 35 return 0; 36 } 37 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 */ 70 static int test__parse_no_sample_id_all(struct test_suite *test __maybe_unused, 71 int subtest __maybe_unused) 72 { 73 int err; 74 75 struct test_attr_event event1 = { 76 .header = { 77 .type = PERF_RECORD_HEADER_ATTR, 78 .size = sizeof(struct test_attr_event), 79 }, 80 .id = 1, 81 }; 82 struct test_attr_event event2 = { 83 .header = { 84 .type = PERF_RECORD_HEADER_ATTR, 85 .size = sizeof(struct test_attr_event), 86 }, 87 .id = 2, 88 }; 89 struct perf_record_mmap event3 = { 90 .header = { 91 .type = PERF_RECORD_MMAP, 92 .size = sizeof(struct perf_record_mmap), 93 }, 94 }; 95 union perf_event *events[] = { 96 (union perf_event *)&event1, 97 (union perf_event *)&event2, 98 (union perf_event *)&event3, 99 }; 100 101 err = process_events(events, ARRAY_SIZE(events)); 102 if (err) 103 return -1; 104 105 return 0; 106 } 107 108 DEFINE_SUITE("Parse with no sample_id_all bit set", parse_no_sample_id_all); 109