perf scripts python: Pass event/thread/dso name and symbol info to event handler in python
Also as suggested by Arnaldo, pack all these parameters to a dictionary, which is more expandable for adding new parameters while keeping the compatibility for old scripts. Signed-off-by: Feng Tang <feng.tang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1344419875-21665-4-git-send-email-feng.tang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1 changed files with 29 additions and 6 deletions
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@ -345,15 +345,23 @@ static void python_process_general_event(union perf_event *perf_event __unused,
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struct machine *machine __unused,
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struct addr_location *al __unused)
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{
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PyObject *handler, *retval, *t;
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PyObject *handler, *retval, *t, *dict;
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static char handler_name[64];
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unsigned n = 0;
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void *data = sample->raw_data;
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struct thread *thread = al->thread;
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/*
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* Use the MAX_FIELDS to make the function expandable, though
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* currently there is only one itme for the tuple.
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*/
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t = PyTuple_New(MAX_FIELDS);
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if (!t)
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Py_FatalError("couldn't create Python tuple");
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dict = PyDict_New();
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if (!dict)
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Py_FatalError("couldn't create Python dictionary");
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snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
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handler = PyDict_GetItemString(main_dict, handler_name);
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@ -362,11 +370,25 @@ static void python_process_general_event(union perf_event *perf_event __unused,
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goto exit;
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}
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/* Pass 4 parameters: event_attr, perf_sample, raw data, thread name */
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PyTuple_SetItem(t, n++, PyString_FromStringAndSize((void *)&evsel->attr, sizeof(evsel->attr)));
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PyTuple_SetItem(t, n++, PyString_FromStringAndSize((void *)sample, sizeof(*sample)));
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PyTuple_SetItem(t, n++, PyString_FromStringAndSize(data, sample->raw_size));
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PyDict_SetItemString(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
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PyDict_SetItemString(dict, "attr", PyString_FromStringAndSize(
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(const char *)&evsel->attr, sizeof(evsel->attr)));
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PyDict_SetItemString(dict, "sample", PyString_FromStringAndSize(
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(const char *)sample, sizeof(*sample)));
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PyDict_SetItemString(dict, "raw_buf", PyString_FromStringAndSize(
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(const char *)sample->raw_data, sample->raw_size));
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PyDict_SetItemString(dict, "comm",
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PyString_FromString(thread->comm));
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if (al->map) {
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PyDict_SetItemString(dict, "dso",
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PyString_FromString(al->map->dso->name));
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}
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if (al->sym) {
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PyDict_SetItemString(dict, "symbol",
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PyString_FromString(al->sym->name));
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}
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PyTuple_SetItem(t, n++, dict);
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if (_PyTuple_Resize(&t, n) == -1)
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Py_FatalError("error resizing Python tuple");
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@ -374,6 +396,7 @@ static void python_process_general_event(union perf_event *perf_event __unused,
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if (retval == NULL)
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handler_call_die(handler_name);
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exit:
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Py_DECREF(dict);
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Py_DECREF(t);
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}
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