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Subject[PATCH 3/3] perf script: Provide additional sample information on generic events

perf script: Provide additional sample information on
generic events to Python scripts, including pid, tid, and cpu for which the
event was recorded. At the moment, the pointer to the sample struct is
passed to scripts, which seems to be of little use. The patch puts this
information in dictionaries for easy access by Python scripts.

Signed-off-by: Joseph Schuchart <joseph.schuchart@tu-dresden.de>
Acked-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de>
---
.../util/scripting-engines/trace-event-python.c | 23 +++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index cf65404..b366b48 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -473,7 +473,7 @@ static void python_process_general_event(struct perf_sample *sample,
struct thread *thread,
struct addr_location *al)
{
- PyObject *handler, *retval, *t, *dict, *callchain;
+ PyObject *handler, *retval, *t, *dict, *callchain, *dict_sample;
static char handler_name[64];
unsigned n = 0;

@@ -489,6 +489,10 @@ static void python_process_general_event(struct perf_sample *sample,
if (!dict)
Py_FatalError("couldn't create Python dictionary");

+ dict_sample = PyDict_New();
+ if (!dict_sample)
+ Py_FatalError("couldn't create Python dictionary");
+
snprintf(handler_name, sizeof(handler_name), "%s", "process_event");

handler = PyDict_GetItemString(main_dict, handler_name);
@@ -498,8 +502,21 @@ static void python_process_general_event(struct perf_sample *sample,
pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
pydict_set_item_string_decref(dict, "attr", PyString_FromStringAndSize(
(const char *)&evsel->attr, sizeof(evsel->attr)));
- pydict_set_item_string_decref(dict, "sample", PyString_FromStringAndSize(
- (const char *)sample, sizeof(*sample)));
+
+ pydict_set_item_string_decref(dict_sample, "pid",
+ PyInt_FromLong(sample->pid));
+ pydict_set_item_string_decref(dict_sample, "tid",
+ PyInt_FromLong(sample->tid));
+ pydict_set_item_string_decref(dict_sample, "cpu",
+ PyInt_FromLong(sample->cpu));
+ pydict_set_item_string_decref(dict_sample, "ip",
+ PyLong_FromUnsignedLongLong(sample->ip));
+ pydict_set_item_string_decref(dict_sample, "time",
+ PyLong_FromUnsignedLongLong(sample->time));
+ pydict_set_item_string_decref(dict_sample, "period",
+ PyLong_FromUnsignedLongLong(sample->period));
+ pydict_set_item_string_decref(dict, "sample", dict_sample);
+
pydict_set_item_string_decref(dict, "raw_buf", PyString_FromStringAndSize(
(const char *)sample->raw_data, sample->raw_size));
pydict_set_item_string_decref(dict, "comm",
--
1.8.1.2


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