110 lines · 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#include "util/sample.h"12 13static 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 39static 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 53struct 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 the63 * sample_id_all bit. Without the sample_id_all bit, non-sample events (such as64 * mmap events) do not have an id sample appended, and consequently logic65 * designed to determine the id will not work. That case happens when there is66 * more than one selected event, so this test processes three events: 267 * attributes representing the selected events and one mmap event.68 *69 * Return: %0 on success, %-1 if the test fails.70 */71static 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 109DEFINE_SUITE("Parse with no sample_id_all bit set", parse_no_sample_id_all);110