perf db-export: Export synth events

Synthesized events are samples but with architecture-specific data
stored in sample->raw_data. They are identified by attribute type
PERF_TYPE_SYNTH.  Add a function to export them.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190622093248.581-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 6acb379..112bed6 100644 (file)
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -112,6 +112,7 @@ struct tables {
        PyObject                *sample_handler;
        PyObject                *call_path_handler;
        PyObject                *call_return_handler;
+       PyObject                *synth_handler;
        bool                    db_export_mode;
 };
 
@@ -947,6 +948,12 @@ static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
        return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
 }
 
+static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
+                          unsigned int sz)
+{
+       return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
+}
+
 static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
 {
        struct tables *tables = container_of(dbe, struct tables, dbe);
@@ -1105,8 +1112,8 @@ static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
        return 0;
 }
 
-static int python_export_sample(struct db_export *dbe,
-                               struct export_sample *es)
+static void python_export_sample_table(struct db_export *dbe,
+                                      struct export_sample *es)
 {
        struct tables *tables = container_of(dbe, struct tables, dbe);
        PyObject *t;
@@ -1141,6 +1148,33 @@ static int python_export_sample(struct db_export *dbe,
        call_object(tables->sample_handler, t, "sample_table");
 
        Py_DECREF(t);
+}
+
+static void python_export_synth(struct db_export *dbe, struct export_sample *es)
+{
+       struct tables *tables = container_of(dbe, struct tables, dbe);
+       PyObject *t;
+
+       t = tuple_new(3);
+
+       tuple_set_u64(t, 0, es->db_id);
+       tuple_set_u64(t, 1, es->evsel->attr.config);
+       tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
+
+       call_object(tables->synth_handler, t, "synth_data");
+
+       Py_DECREF(t);
+}
+
+static int python_export_sample(struct db_export *dbe,
+                               struct export_sample *es)
+{
+       struct tables *tables = container_of(dbe, struct tables, dbe);
+
+       python_export_sample_table(dbe, es);
+
+       if (es->evsel->attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
+               python_export_synth(dbe, es);
 
        return 0;
 }
@@ -1477,6 +1511,14 @@ static void set_table_handlers(struct tables *tables)
        SET_TABLE_HANDLER(sample);
        SET_TABLE_HANDLER(call_path);
        SET_TABLE_HANDLER(call_return);
+
+       /*
+        * Synthesized events are samples but with architecture-specific data
+        * stored in sample->raw_data. They are exported via
+        * python_export_sample() and consequently do not need a separate export
+        * callback.
+        */
+       tables->synth_handler = get_handler("synth_data");
 }
 
 #if PY_MAJOR_VERSION < 3