parse-no-sample-id-all.c
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#include <sys/types.h>
#include <stddef.h>
#include "tests.h"
#include "event.h"
#include "evlist.h"
#include "header.h"
#include "util.h"
static int process_event(struct perf_evlist **pevlist, union perf_event *event)
{
struct perf_sample sample;
if (event->header.type == PERF_RECORD_HEADER_ATTR) {
if (perf_event__process_attr(NULL, event, pevlist)) {
pr_debug("perf_event__process_attr failed\n");
return -1;
}
return 0;
}
if (event->header.type >= PERF_RECORD_USER_TYPE_START)
return -1;
if (!*pevlist)
return -1;
if (perf_evlist__parse_sample(*pevlist, event, &sample)) {
pr_debug("perf_evlist__parse_sample failed\n");
return -1;
}
return 0;
}
static int process_events(union perf_event **events, size_t count)
{
struct perf_evlist *evlist = NULL;
int err = 0;
size_t i;
for (i = 0; i < count && !err; i++)
err = process_event(&evlist, events[i]);
if (evlist)
perf_evlist__delete(evlist);
return err;
}
struct test_attr_event {
struct attr_event attr;
u64 id;
};
/**
* test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
*
* This function tests parsing data produced on kernel's that do not support the
* sample_id_all bit. Without the sample_id_all bit, non-sample events (such as
* mmap events) do not have an id sample appended, and consequently logic
* designed to determine the id will not work. That case happens when there is
* more than one selected event, so this test processes three events: 2
* attributes representing the selected events and one mmap event.
*
* Return: %0 on success, %-1 if the test fails.
*/
int test__parse_no_sample_id_all(void)
{
int err;
struct test_attr_event event1 = {
.attr = {
.header = {
.type = PERF_RECORD_HEADER_ATTR,
.size = sizeof(struct test_attr_event),
},
},
.id = 1,
};
struct test_attr_event event2 = {
.attr = {
.header = {
.type = PERF_RECORD_HEADER_ATTR,
.size = sizeof(struct test_attr_event),
},
},
.id = 2,
};
struct mmap_event event3 = {
.header = {
.type = PERF_RECORD_MMAP,
.size = sizeof(struct mmap_event),
},
};
union perf_event *events[] = {
(union perf_event *)&event1,
(union perf_event *)&event2,
(union perf_event *)&event3,
};
err = process_events(events, ARRAY_SIZE(events));
if (err)
return -1;
return 0;
}