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perf tools: Propagate event parse error handling 

Better handle event parsing error by propagating the details
in upper layers or by dumping some failure message. So that
the user knows he has some crazy events in the batch.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
This commit is contained in:
Frederic Weisbecker 2011-05-22 02:17:22 +02:00
parent 98e1da905c
commit 5538becaec
4 changed files with 33 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
tools/perf/builtin-test.c
View File

@ -559,8 +559,13 @@ static int test__basic_mmap(void)
goto out_munmap;
}
perf_event__parse_sample(event, attr.sample_type, sample_size,
false, &sample);
err = perf_event__parse_sample(event, attr.sample_type, sample_size,
false, &sample);
if (err) {
pr_err("Can't parse sample, err = %d\n", err);
goto out_munmap;
}
evsel = perf_evlist__id2evsel(evlist, sample.id);
if (evsel == NULL) {
pr_debug("event with id %" PRIu64

7
tools/perf/builtin-top.c
View File

@ -805,9 +805,14 @@ static void perf_session__mmap_read_cpu(struct perf_session *self, int cpu)
{
struct perf_sample sample;
union perf_event *event;
int ret;
while ((event = perf_evlist__read_on_cpu(top.evlist, cpu)) != NULL) {
perf_session__parse_sample(self, event, &sample);
ret = perf_session__parse_sample(self, event, &sample);
if (ret) {
pr_err("Can't parse sample, err = %d\n", ret);
continue;
}
if (event->header.type == PERF_RECORD_SAMPLE)
perf_event__process_sample(event, &sample, self);

14
tools/perf/util/python.c
View File

@ -675,6 +675,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
union perf_event *event;
int sample_id_all = 1, cpu;
static char *kwlist[] = {"sample_id_all", NULL, NULL};
int err;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
&cpu, &sample_id_all))
@ -690,12 +691,17 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
return PyErr_NoMemory();
first = list_entry(evlist->entries.next, struct perf_evsel, node);
perf_event__parse_sample(event, first->attr.sample_type,
perf_sample_size(first->attr.sample_type),
sample_id_all, &pevent->sample);
err = perf_event__parse_sample(event, first->attr.sample_type,
perf_sample_size(first->attr.sample_type),
sample_id_all, &pevent->sample);
if (err) {
pr_err("Can't parse sample, err = %d\n", err);
goto end;
}
return pyevent;
}
end:
Py_INCREF(Py_None);
return Py_None;
}

14
tools/perf/util/session.c
View File

@ -480,6 +480,7 @@ static void flush_sample_queue(struct perf_session *s,
struct perf_sample sample;
u64 limit = os->next_flush;
u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
int ret;
if (!ops->ordered_samples || !limit)
return;
@ -488,9 +489,12 @@ static void flush_sample_queue(struct perf_session *s,
if (iter->timestamp > limit)
break;
perf_session__parse_sample(s, iter->event, &sample);
perf_session_deliver_event(s, iter->event, &sample, ops,
iter->file_offset);
ret = perf_session__parse_sample(s, iter->event, &sample);
if (ret)
pr_err("Can't parse sample, err = %d\n", ret);
else
perf_session_deliver_event(s, iter->event, &sample, ops,
iter->file_offset);
os->last_flush = iter->timestamp;
list_del(&iter->list);
@ -806,7 +810,9 @@ static int perf_session__process_event(struct perf_session *session,
/*
* For all kernel events we get the sample data
*/
perf_session__parse_sample(session, event, &sample);
ret = perf_session__parse_sample(session, event, &sample);
if (ret)
return ret;
/* Preprocess sample records - precheck callchains */
if (perf_session__preprocess_sample(session, event, &sample))