Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2218 insertions, 0 deletions

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
new file mode 100644
index 0000000000..9431274144
--- /dev/null
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -0,0 +1,2218 @@
+/*
+ * trace-event-python.  Feed trace events to an embedded Python interpreter.
+ *
+ * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <Python.h>
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <linux/bitmap.h>
+#include <linux/compiler.h>
+#include <linux/time64.h>
+#ifdef HAVE_LIBTRACEEVENT
+#include <traceevent/event-parse.h>
+#endif
+
+#include "../build-id.h"
+#include "../counts.h"
+#include "../debug.h"
+#include "../dso.h"
+#include "../callchain.h"
+#include "../env.h"
+#include "../evsel.h"
+#include "../event.h"
+#include "../thread.h"
+#include "../comm.h"
+#include "../machine.h"
+#include "../db-export.h"
+#include "../thread-stack.h"
+#include "../trace-event.h"
+#include "../call-path.h"
+#include "map.h"
+#include "symbol.h"
+#include "thread_map.h"
+#include "print_binary.h"
+#include "stat.h"
+#include "mem-events.h"
+#include "util/perf_regs.h"
+
+#if PY_MAJOR_VERSION < 3
+#define _PyUnicode_FromString(arg) \
+  PyString_FromString(arg)
+#define _PyUnicode_FromStringAndSize(arg1, arg2) \
+  PyString_FromStringAndSize((arg1), (arg2))
+#define _PyBytes_FromStringAndSize(arg1, arg2) \
+  PyString_FromStringAndSize((arg1), (arg2))
+#define _PyLong_FromLong(arg) \
+  PyInt_FromLong(arg)
+#define _PyLong_AsLong(arg) \
+  PyInt_AsLong(arg)
+#define _PyCapsule_New(arg1, arg2, arg3) \
+  PyCObject_FromVoidPtr((arg1), (arg2))
+
+PyMODINIT_FUNC initperf_trace_context(void);
+#else
+#define _PyUnicode_FromString(arg) \
+  PyUnicode_FromString(arg)
+#define _PyUnicode_FromStringAndSize(arg1, arg2) \
+  PyUnicode_FromStringAndSize((arg1), (arg2))
+#define _PyBytes_FromStringAndSize(arg1, arg2) \
+  PyBytes_FromStringAndSize((arg1), (arg2))
+#define _PyLong_FromLong(arg) \
+  PyLong_FromLong(arg)
+#define _PyLong_AsLong(arg) \
+  PyLong_AsLong(arg)
+#define _PyCapsule_New(arg1, arg2, arg3) \
+  PyCapsule_New((arg1), (arg2), (arg3))
+
+PyMODINIT_FUNC PyInit_perf_trace_context(void);
+#endif
+
+#ifdef HAVE_LIBTRACEEVENT
+#define TRACE_EVENT_TYPE_MAX				\
+	((1 << (sizeof(unsigned short) * 8)) - 1)
+
+#define N_COMMON_FIELDS	7
+
+static char *cur_field_name;
+static int zero_flag_atom;
+#endif
+
+#define MAX_FIELDS	64
+
+extern struct scripting_context *scripting_context;
+
+static PyObject *main_module, *main_dict;
+
+struct tables {
+	struct db_export	dbe;
+	PyObject		*evsel_handler;
+	PyObject		*machine_handler;
+	PyObject		*thread_handler;
+	PyObject		*comm_handler;
+	PyObject		*comm_thread_handler;
+	PyObject		*dso_handler;
+	PyObject		*symbol_handler;
+	PyObject		*branch_type_handler;
+	PyObject		*sample_handler;
+	PyObject		*call_path_handler;
+	PyObject		*call_return_handler;
+	PyObject		*synth_handler;
+	PyObject		*context_switch_handler;
+	bool			db_export_mode;
+};
+
+static struct tables tables_global;
+
+static void handler_call_die(const char *handler_name) __noreturn;
+static void handler_call_die(const char *handler_name)
+{
+	PyErr_Print();
+	Py_FatalError("problem in Python trace event handler");
+	// Py_FatalError does not return
+	// but we have to make the compiler happy
+	abort();
+}
+
+/*
+ * Insert val into the dictionary and decrement the reference counter.
+ * This is necessary for dictionaries since PyDict_SetItemString() does not
+ * steal a reference, as opposed to PyTuple_SetItem().
+ */
+static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
+{
+	PyDict_SetItemString(dict, key, val);
+	Py_DECREF(val);
+}
+
+static PyObject *get_handler(const char *handler_name)
+{
+	PyObject *handler;
+
+	handler = PyDict_GetItemString(main_dict, handler_name);
+	if (handler && !PyCallable_Check(handler))
+		return NULL;
+	return handler;
+}
+
+static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
+{
+	PyObject *retval;
+
+	retval = PyObject_CallObject(handler, args);
+	if (retval == NULL)
+		handler_call_die(die_msg);
+	Py_DECREF(retval);
+}
+
+static void try_call_object(const char *handler_name, PyObject *args)
+{
+	PyObject *handler;
+
+	handler = get_handler(handler_name);
+	if (handler)
+		call_object(handler, args, handler_name);
+}
+
+#ifdef HAVE_LIBTRACEEVENT
+static int get_argument_count(PyObject *handler)
+{
+	int arg_count = 0;
+
+	/*
+	 * The attribute for the code object is func_code in Python 2,
+	 * whereas it is __code__ in Python 3.0+.
+	 */
+	PyObject *code_obj = PyObject_GetAttrString(handler,
+		"func_code");
+	if (PyErr_Occurred()) {
+		PyErr_Clear();
+		code_obj = PyObject_GetAttrString(handler,
+			"__code__");
+	}
+	PyErr_Clear();
+	if (code_obj) {
+		PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
+			"co_argcount");
+		if (arg_count_obj) {
+			arg_count = (int) _PyLong_AsLong(arg_count_obj);
+			Py_DECREF(arg_count_obj);
+		}
+		Py_DECREF(code_obj);
+	}
+	return arg_count;
+}
+
+static void define_value(enum tep_print_arg_type field_type,
+			 const char *ev_name,
+			 const char *field_name,
+			 const char *field_value,
+			 const char *field_str)
+{
+	const char *handler_name = "define_flag_value";
+	PyObject *t;
+	unsigned long long value;
+	unsigned n = 0;
+
+	if (field_type == TEP_PRINT_SYMBOL)
+		handler_name = "define_symbolic_value";
+
+	t = PyTuple_New(4);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+	value = eval_flag(field_value);
+
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
+	PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
+
+	try_call_object(handler_name, t);
+
+	Py_DECREF(t);
+}
+
+static void define_values(enum tep_print_arg_type field_type,
+			  struct tep_print_flag_sym *field,
+			  const char *ev_name,
+			  const char *field_name)
+{
+	define_value(field_type, ev_name, field_name, field->value,
+		     field->str);
+
+	if (field->next)
+		define_values(field_type, field->next, ev_name, field_name);
+}
+
+static void define_field(enum tep_print_arg_type field_type,
+			 const char *ev_name,
+			 const char *field_name,
+			 const char *delim)
+{
+	const char *handler_name = "define_flag_field";
+	PyObject *t;
+	unsigned n = 0;
+
+	if (field_type == TEP_PRINT_SYMBOL)
+		handler_name = "define_symbolic_field";
+
+	if (field_type == TEP_PRINT_FLAGS)
+		t = PyTuple_New(3);
+	else
+		t = PyTuple_New(2);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
+	if (field_type == TEP_PRINT_FLAGS)
+		PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
+
+	try_call_object(handler_name, t);
+
+	Py_DECREF(t);
+}
+
+static void define_event_symbols(struct tep_event *event,
+				 const char *ev_name,
+				 struct tep_print_arg *args)
+{
+	if (args == NULL)
+		return;
+
+	switch (args->type) {
+	case TEP_PRINT_NULL:
+		break;
+	case TEP_PRINT_ATOM:
+		define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
+			     args->atom.atom);
+		zero_flag_atom = 0;
+		break;
+	case TEP_PRINT_FIELD:
+		free(cur_field_name);
+		cur_field_name = strdup(args->field.name);
+		break;
+	case TEP_PRINT_FLAGS:
+		define_event_symbols(event, ev_name, args->flags.field);
+		define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
+			     args->flags.delim);
+		define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
+			      cur_field_name);
+		break;
+	case TEP_PRINT_SYMBOL:
+		define_event_symbols(event, ev_name, args->symbol.field);
+		define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
+		define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
+			      cur_field_name);
+		break;
+	case TEP_PRINT_HEX:
+	case TEP_PRINT_HEX_STR:
+		define_event_symbols(event, ev_name, args->hex.field);
+		define_event_symbols(event, ev_name, args->hex.size);
+		break;
+	case TEP_PRINT_INT_ARRAY:
+		define_event_symbols(event, ev_name, args->int_array.field);
+		define_event_symbols(event, ev_name, args->int_array.count);
+		define_event_symbols(event, ev_name, args->int_array.el_size);
+		break;
+	case TEP_PRINT_STRING:
+		break;
+	case TEP_PRINT_TYPE:
+		define_event_symbols(event, ev_name, args->typecast.item);
+		break;
+	case TEP_PRINT_OP:
+		if (strcmp(args->op.op, ":") == 0)
+			zero_flag_atom = 1;
+		define_event_symbols(event, ev_name, args->op.left);
+		define_event_symbols(event, ev_name, args->op.right);
+		break;
+	default:
+		/* gcc warns for these? */
+	case TEP_PRINT_BSTRING:
+	case TEP_PRINT_DYNAMIC_ARRAY:
+	case TEP_PRINT_DYNAMIC_ARRAY_LEN:
+	case TEP_PRINT_FUNC:
+	case TEP_PRINT_BITMASK:
+		/* we should warn... */
+		return;
+	}
+
+	if (args->next)
+		define_event_symbols(event, ev_name, args->next);
+}
+
+static PyObject *get_field_numeric_entry(struct tep_event *event,
+		struct tep_format_field *field, void *data)
+{
+	bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
+	PyObject *obj = NULL, *list = NULL;
+	unsigned long long val;
+	unsigned int item_size, n_items, i;
+
+	if (is_array) {
+		list = PyList_New(field->arraylen);
+		item_size = field->size / field->arraylen;
+		n_items = field->arraylen;
+	} else {
+		item_size = field->size;
+		n_items = 1;
+	}
+
+	for (i = 0; i < n_items; i++) {
+
+		val = read_size(event, data + field->offset + i * item_size,
+				item_size);
+		if (field->flags & TEP_FIELD_IS_SIGNED) {
+			if ((long long)val >= LONG_MIN &&
+					(long long)val <= LONG_MAX)
+				obj = _PyLong_FromLong(val);
+			else
+				obj = PyLong_FromLongLong(val);
+		} else {
+			if (val <= LONG_MAX)
+				obj = _PyLong_FromLong(val);
+			else
+				obj = PyLong_FromUnsignedLongLong(val);
+		}
+		if (is_array)
+			PyList_SET_ITEM(list, i, obj);
+	}
+	if (is_array)
+		obj = list;
+	return obj;
+}
+#endif
+
+static const char *get_dsoname(struct map *map)
+{
+	const char *dsoname = "[unknown]";
+	struct dso *dso = map ? map__dso(map) : NULL;
+
+	if (dso) {
+		if (symbol_conf.show_kernel_path && dso->long_name)
+			dsoname = dso->long_name;
+		else
+			dsoname = dso->name;
+	}
+
+	return dsoname;
+}
+
+static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
+{
+	unsigned long offset;
+
+	if (al->addr < sym->end)
+		offset = al->addr - sym->start;
+	else
+		offset = al->addr - map__start(al->map) - sym->start;
+
+	return offset;
+}
+
+static PyObject *python_process_callchain(struct perf_sample *sample,
+					 struct evsel *evsel,
+					 struct addr_location *al)
+{
+	PyObject *pylist;
+	struct callchain_cursor *cursor;
+
+	pylist = PyList_New(0);
+	if (!pylist)
+		Py_FatalError("couldn't create Python list");
+
+	if (!symbol_conf.use_callchain || !sample->callchain)
+		goto exit;
+
+	cursor = get_tls_callchain_cursor();
+	if (thread__resolve_callchain(al->thread, cursor, evsel,
+				      sample, NULL, NULL,
+				      scripting_max_stack) != 0) {
+		pr_err("Failed to resolve callchain. Skipping\n");
+		goto exit;
+	}
+	callchain_cursor_commit(cursor);
+
+
+	while (1) {
+		PyObject *pyelem;
+		struct callchain_cursor_node *node;
+		node = callchain_cursor_current(cursor);
+		if (!node)
+			break;
+
+		pyelem = PyDict_New();
+		if (!pyelem)
+			Py_FatalError("couldn't create Python dictionary");
+
+
+		pydict_set_item_string_decref(pyelem, "ip",
+				PyLong_FromUnsignedLongLong(node->ip));
+
+		if (node->ms.sym) {
+			PyObject *pysym  = PyDict_New();
+			if (!pysym)
+				Py_FatalError("couldn't create Python dictionary");
+			pydict_set_item_string_decref(pysym, "start",
+					PyLong_FromUnsignedLongLong(node->ms.sym->start));
+			pydict_set_item_string_decref(pysym, "end",
+					PyLong_FromUnsignedLongLong(node->ms.sym->end));
+			pydict_set_item_string_decref(pysym, "binding",
+					_PyLong_FromLong(node->ms.sym->binding));
+			pydict_set_item_string_decref(pysym, "name",
+					_PyUnicode_FromStringAndSize(node->ms.sym->name,
+							node->ms.sym->namelen));
+			pydict_set_item_string_decref(pyelem, "sym", pysym);
+
+			if (node->ms.map) {
+				struct map *map = node->ms.map;
+				struct addr_location node_al;
+				unsigned long offset;
+
+				addr_location__init(&node_al);
+				node_al.addr = map__map_ip(map, node->ip);
+				node_al.map  = map__get(map);
+				offset = get_offset(node->ms.sym, &node_al);
+				addr_location__exit(&node_al);
+
+				pydict_set_item_string_decref(
+					pyelem, "sym_off",
+					PyLong_FromUnsignedLongLong(offset));
+			}
+			if (node->srcline && strcmp(":0", node->srcline)) {
+				pydict_set_item_string_decref(
+					pyelem, "sym_srcline",
+					_PyUnicode_FromString(node->srcline));
+			}
+		}
+
+		if (node->ms.map) {
+			const char *dsoname = get_dsoname(node->ms.map);
+
+			pydict_set_item_string_decref(pyelem, "dso",
+					_PyUnicode_FromString(dsoname));
+		}
+
+		callchain_cursor_advance(cursor);
+		PyList_Append(pylist, pyelem);
+		Py_DECREF(pyelem);
+	}
+
+exit:
+	return pylist;
+}
+
+static PyObject *python_process_brstack(struct perf_sample *sample,
+					struct thread *thread)
+{
+	struct branch_stack *br = sample->branch_stack;
+	struct branch_entry *entries = perf_sample__branch_entries(sample);
+	PyObject *pylist;
+	u64 i;
+
+	pylist = PyList_New(0);
+	if (!pylist)
+		Py_FatalError("couldn't create Python list");
+
+	if (!(br && br->nr))
+		goto exit;
+
+	for (i = 0; i < br->nr; i++) {
+		PyObject *pyelem;
+		struct addr_location al;
+		const char *dsoname;
+
+		pyelem = PyDict_New();
+		if (!pyelem)
+			Py_FatalError("couldn't create Python dictionary");
+
+		pydict_set_item_string_decref(pyelem, "from",
+		    PyLong_FromUnsignedLongLong(entries[i].from));
+		pydict_set_item_string_decref(pyelem, "to",
+		    PyLong_FromUnsignedLongLong(entries[i].to));
+		pydict_set_item_string_decref(pyelem, "mispred",
+		    PyBool_FromLong(entries[i].flags.mispred));
+		pydict_set_item_string_decref(pyelem, "predicted",
+		    PyBool_FromLong(entries[i].flags.predicted));
+		pydict_set_item_string_decref(pyelem, "in_tx",
+		    PyBool_FromLong(entries[i].flags.in_tx));
+		pydict_set_item_string_decref(pyelem, "abort",
+		    PyBool_FromLong(entries[i].flags.abort));
+		pydict_set_item_string_decref(pyelem, "cycles",
+		    PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
+
+		addr_location__init(&al);
+		thread__find_map_fb(thread, sample->cpumode,
+				    entries[i].from, &al);
+		dsoname = get_dsoname(al.map);
+		pydict_set_item_string_decref(pyelem, "from_dsoname",
+					      _PyUnicode_FromString(dsoname));
+
+		thread__find_map_fb(thread, sample->cpumode,
+				    entries[i].to, &al);
+		dsoname = get_dsoname(al.map);
+		pydict_set_item_string_decref(pyelem, "to_dsoname",
+					      _PyUnicode_FromString(dsoname));
+
+		addr_location__exit(&al);
+		PyList_Append(pylist, pyelem);
+		Py_DECREF(pyelem);
+	}
+
+exit:
+	return pylist;
+}
+
+static int get_symoff(struct symbol *sym, struct addr_location *al,
+		      bool print_off, char *bf, int size)
+{
+	unsigned long offset;
+
+	if (!sym || !sym->name[0])
+		return scnprintf(bf, size, "%s", "[unknown]");
+
+	if (!print_off)
+		return scnprintf(bf, size, "%s", sym->name);
+
+	offset = get_offset(sym, al);
+
+	return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
+}
+
+static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
+{
+	if (!flags->mispred  && !flags->predicted)
+		return scnprintf(bf, size, "%s", "-");
+
+	if (flags->mispred)
+		return scnprintf(bf, size, "%s", "M");
+
+	return scnprintf(bf, size, "%s", "P");
+}
+
+static PyObject *python_process_brstacksym(struct perf_sample *sample,
+					   struct thread *thread)
+{
+	struct branch_stack *br = sample->branch_stack;
+	struct branch_entry *entries = perf_sample__branch_entries(sample);
+	PyObject *pylist;
+	u64 i;
+	char bf[512];
+
+	pylist = PyList_New(0);
+	if (!pylist)
+		Py_FatalError("couldn't create Python list");
+
+	if (!(br && br->nr))
+		goto exit;
+
+	for (i = 0; i < br->nr; i++) {
+		PyObject *pyelem;
+		struct addr_location al;
+
+		addr_location__init(&al);
+		pyelem = PyDict_New();
+		if (!pyelem)
+			Py_FatalError("couldn't create Python dictionary");
+
+		thread__find_symbol_fb(thread, sample->cpumode,
+				       entries[i].from, &al);
+		get_symoff(al.sym, &al, true, bf, sizeof(bf));
+		pydict_set_item_string_decref(pyelem, "from",
+					      _PyUnicode_FromString(bf));
+
+		thread__find_symbol_fb(thread, sample->cpumode,
+				       entries[i].to, &al);
+		get_symoff(al.sym, &al, true, bf, sizeof(bf));
+		pydict_set_item_string_decref(pyelem, "to",
+					      _PyUnicode_FromString(bf));
+
+		get_br_mspred(&entries[i].flags, bf, sizeof(bf));
+		pydict_set_item_string_decref(pyelem, "pred",
+					      _PyUnicode_FromString(bf));
+
+		if (entries[i].flags.in_tx) {
+			pydict_set_item_string_decref(pyelem, "in_tx",
+					      _PyUnicode_FromString("X"));
+		} else {
+			pydict_set_item_string_decref(pyelem, "in_tx",
+					      _PyUnicode_FromString("-"));
+		}
+
+		if (entries[i].flags.abort) {
+			pydict_set_item_string_decref(pyelem, "abort",
+					      _PyUnicode_FromString("A"));
+		} else {
+			pydict_set_item_string_decref(pyelem, "abort",
+					      _PyUnicode_FromString("-"));
+		}
+
+		PyList_Append(pylist, pyelem);
+		Py_DECREF(pyelem);
+		addr_location__exit(&al);
+	}
+
+exit:
+	return pylist;
+}
+
+static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
+					   u64 read_format)
+{
+	PyObject *t;
+
+	t = PyTuple_New(3);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+	PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
+	PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
+	if (read_format & PERF_FORMAT_LOST)
+		PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
+
+	return t;
+}
+
+static void set_sample_read_in_dict(PyObject *dict_sample,
+					 struct perf_sample *sample,
+					 struct evsel *evsel)
+{
+	u64 read_format = evsel->core.attr.read_format;
+	PyObject *values;
+	unsigned int i;
+
+	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
+		pydict_set_item_string_decref(dict_sample, "time_enabled",
+			PyLong_FromUnsignedLongLong(sample->read.time_enabled));
+	}
+
+	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
+		pydict_set_item_string_decref(dict_sample, "time_running",
+			PyLong_FromUnsignedLongLong(sample->read.time_running));
+	}
+
+	if (read_format & PERF_FORMAT_GROUP)
+		values = PyList_New(sample->read.group.nr);
+	else
+		values = PyList_New(1);
+
+	if (!values)
+		Py_FatalError("couldn't create Python list");
+
+	if (read_format & PERF_FORMAT_GROUP) {
+		struct sample_read_value *v = sample->read.group.values;
+
+		i = 0;
+		sample_read_group__for_each(v, sample->read.group.nr, read_format) {
+			PyObject *t = get_sample_value_as_tuple(v, read_format);
+			PyList_SET_ITEM(values, i, t);
+			i++;
+		}
+	} else {
+		PyObject *t = get_sample_value_as_tuple(&sample->read.one,
+							read_format);
+		PyList_SET_ITEM(values, 0, t);
+	}
+	pydict_set_item_string_decref(dict_sample, "values", values);
+}
+
+static void set_sample_datasrc_in_dict(PyObject *dict,
+				       struct perf_sample *sample)
+{
+	struct mem_info mi = { .data_src.val = sample->data_src };
+	char decode[100];
+
+	pydict_set_item_string_decref(dict, "datasrc",
+			PyLong_FromUnsignedLongLong(sample->data_src));
+
+	perf_script__meminfo_scnprintf(decode, 100, &mi);
+
+	pydict_set_item_string_decref(dict, "datasrc_decode",
+			_PyUnicode_FromString(decode));
+}
+
+static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
+{
+	unsigned int i = 0, r;
+	int printed = 0;
+
+	bf[0] = 0;
+
+	if (size <= 0)
+		return;
+
+	if (!regs || !regs->regs)
+		return;
+
+	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
+		u64 val = regs->regs[i++];
+
+		printed += scnprintf(bf + printed, size - printed,
+				     "%5s:0x%" PRIx64 " ",
+				     perf_reg_name(r, arch), val);
+	}
+}
+
+static void set_regs_in_dict(PyObject *dict,
+			     struct perf_sample *sample,
+			     struct evsel *evsel)
+{
+	struct perf_event_attr *attr = &evsel->core.attr;
+	const char *arch = perf_env__arch(evsel__env(evsel));
+
+	/*
+	 * Here value 28 is a constant size which can be used to print
+	 * one register value and its corresponds to:
+	 * 16 chars is to specify 64 bit register in hexadecimal.
+	 * 2 chars is for appending "0x" to the hexadecimal value and
+	 * 10 chars is for register name.
+	 */
+	int size = __sw_hweight64(attr->sample_regs_intr) * 28;
+	char *bf = malloc(size);
+
+	regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, size);
+
+	pydict_set_item_string_decref(dict, "iregs",
+			_PyUnicode_FromString(bf));
+
+	regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, size);
+
+	pydict_set_item_string_decref(dict, "uregs",
+			_PyUnicode_FromString(bf));
+	free(bf);
+}
+
+static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
+			    const char *dso_field, const char *dso_bid_field,
+			    const char *dso_map_start, const char *dso_map_end,
+			    const char *sym_field, const char *symoff_field)
+{
+	char sbuild_id[SBUILD_ID_SIZE];
+
+	if (al->map) {
+		struct dso *dso = map__dso(al->map);
+
+		pydict_set_item_string_decref(dict, dso_field, _PyUnicode_FromString(dso->name));
+		build_id__sprintf(&dso->bid, sbuild_id);
+		pydict_set_item_string_decref(dict, dso_bid_field,
+			_PyUnicode_FromString(sbuild_id));
+		pydict_set_item_string_decref(dict, dso_map_start,
+			PyLong_FromUnsignedLong(map__start(al->map)));
+		pydict_set_item_string_decref(dict, dso_map_end,
+			PyLong_FromUnsignedLong(map__end(al->map)));
+	}
+	if (al->sym) {
+		pydict_set_item_string_decref(dict, sym_field,
+			_PyUnicode_FromString(al->sym->name));
+		pydict_set_item_string_decref(dict, symoff_field,
+			PyLong_FromUnsignedLong(get_offset(al->sym, al)));
+	}
+}
+
+static void set_sample_flags(PyObject *dict, u32 flags)
+{
+	const char *ch = PERF_IP_FLAG_CHARS;
+	char *p, str[33];
+
+	for (p = str; *ch; ch++, flags >>= 1) {
+		if (flags & 1)
+			*p++ = *ch;
+	}
+	*p = 0;
+	pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
+}
+
+static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
+{
+	char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
+
+	set_sample_flags(dict_sample, sample->flags);
+	perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
+	pydict_set_item_string_decref(dict_sample, "flags_disp",
+		_PyUnicode_FromString(flags_disp));
+}
+
+static PyObject *get_perf_sample_dict(struct perf_sample *sample,
+					 struct evsel *evsel,
+					 struct addr_location *al,
+					 struct addr_location *addr_al,
+					 PyObject *callchain)
+{
+	PyObject *dict, *dict_sample, *brstack, *brstacksym;
+
+	dict = PyDict_New();
+	if (!dict)
+		Py_FatalError("couldn't create Python dictionary");
+
+	dict_sample = PyDict_New();
+	if (!dict_sample)
+		Py_FatalError("couldn't create Python dictionary");
+
+	pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
+	pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
+
+	pydict_set_item_string_decref(dict_sample, "pid",
+			_PyLong_FromLong(sample->pid));
+	pydict_set_item_string_decref(dict_sample, "tid",
+			_PyLong_FromLong(sample->tid));
+	pydict_set_item_string_decref(dict_sample, "cpu",
+			_PyLong_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, "phys_addr",
+			PyLong_FromUnsignedLongLong(sample->phys_addr));
+	pydict_set_item_string_decref(dict_sample, "addr",
+			PyLong_FromUnsignedLongLong(sample->addr));
+	set_sample_read_in_dict(dict_sample, sample, evsel);
+	pydict_set_item_string_decref(dict_sample, "weight",
+			PyLong_FromUnsignedLongLong(sample->weight));
+	pydict_set_item_string_decref(dict_sample, "transaction",
+			PyLong_FromUnsignedLongLong(sample->transaction));
+	set_sample_datasrc_in_dict(dict_sample, sample);
+	pydict_set_item_string_decref(dict, "sample", dict_sample);
+
+	pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
+			(const char *)sample->raw_data, sample->raw_size));
+	pydict_set_item_string_decref(dict, "comm",
+			_PyUnicode_FromString(thread__comm_str(al->thread)));
+	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
+			"symbol", "symoff");
+
+	pydict_set_item_string_decref(dict, "callchain", callchain);
+
+	brstack = python_process_brstack(sample, al->thread);
+	pydict_set_item_string_decref(dict, "brstack", brstack);
+
+	brstacksym = python_process_brstacksym(sample, al->thread);
+	pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
+
+	if (sample->machine_pid) {
+		pydict_set_item_string_decref(dict_sample, "machine_pid",
+				_PyLong_FromLong(sample->machine_pid));
+		pydict_set_item_string_decref(dict_sample, "vcpu",
+				_PyLong_FromLong(sample->vcpu));
+	}
+
+	pydict_set_item_string_decref(dict_sample, "cpumode",
+			_PyLong_FromLong((unsigned long)sample->cpumode));
+
+	if (addr_al) {
+		pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
+			PyBool_FromLong(1));
+		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
+				"addr_dso_map_start", "addr_dso_map_end",
+				"addr_symbol", "addr_symoff");
+	}
+
+	if (sample->flags)
+		python_process_sample_flags(sample, dict_sample);
+
+	/* Instructions per cycle (IPC) */
+	if (sample->insn_cnt && sample->cyc_cnt) {
+		pydict_set_item_string_decref(dict_sample, "insn_cnt",
+			PyLong_FromUnsignedLongLong(sample->insn_cnt));
+		pydict_set_item_string_decref(dict_sample, "cyc_cnt",
+			PyLong_FromUnsignedLongLong(sample->cyc_cnt));
+	}
+
+	set_regs_in_dict(dict, sample, evsel);
+
+	return dict;
+}
+
+#ifdef HAVE_LIBTRACEEVENT
+static void python_process_tracepoint(struct perf_sample *sample,
+				      struct evsel *evsel,
+				      struct addr_location *al,
+				      struct addr_location *addr_al)
+{
+	struct tep_event *event = evsel->tp_format;
+	PyObject *handler, *context, *t, *obj = NULL, *callchain;
+	PyObject *dict = NULL, *all_entries_dict = NULL;
+	static char handler_name[256];
+	struct tep_format_field *field;
+	unsigned long s, ns;
+	unsigned n = 0;
+	int pid;
+	int cpu = sample->cpu;
+	void *data = sample->raw_data;
+	unsigned long long nsecs = sample->time;
+	const char *comm = thread__comm_str(al->thread);
+	const char *default_handler_name = "trace_unhandled";
+	DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
+
+	bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
+
+	if (!event) {
+		snprintf(handler_name, sizeof(handler_name),
+			 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
+		Py_FatalError(handler_name);
+	}
+
+	pid = raw_field_value(event, "common_pid", data);
+
+	sprintf(handler_name, "%s__%s", event->system, event->name);
+
+	if (!__test_and_set_bit(event->id, events_defined))
+		define_event_symbols(event, handler_name, event->print_fmt.args);
+
+	handler = get_handler(handler_name);
+	if (!handler) {
+		handler = get_handler(default_handler_name);
+		if (!handler)
+			return;
+		dict = PyDict_New();
+		if (!dict)
+			Py_FatalError("couldn't create Python dict");
+	}
+
+	t = PyTuple_New(MAX_FIELDS);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+
+	s = nsecs / NSEC_PER_SEC;
+	ns = nsecs - s * NSEC_PER_SEC;
+
+	context = _PyCapsule_New(scripting_context, NULL, NULL);
+
+	PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
+	PyTuple_SetItem(t, n++, context);
+
+	/* ip unwinding */
+	callchain = python_process_callchain(sample, evsel, al);
+	/* Need an additional reference for the perf_sample dict */
+	Py_INCREF(callchain);
+
+	if (!dict) {
+		PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
+		PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
+		PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
+		PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
+		PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
+		PyTuple_SetItem(t, n++, callchain);
+	} else {
+		pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
+		pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
+		pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
+		pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
+		pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
+		pydict_set_item_string_decref(dict, "common_callchain", callchain);
+	}
+	for (field = event->format.fields; field; field = field->next) {
+		unsigned int offset, len;
+		unsigned long long val;
+
+		if (field->flags & TEP_FIELD_IS_ARRAY) {
+			offset = field->offset;
+			len    = field->size;
+			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
+				val     = tep_read_number(scripting_context->pevent,
+							  data + offset, len);
+				offset  = val;
+				len     = offset >> 16;
+				offset &= 0xffff;
+				if (tep_field_is_relative(field->flags))
+					offset += field->offset + field->size;
+			}
+			if (field->flags & TEP_FIELD_IS_STRING &&
+			    is_printable_array(data + offset, len)) {
+				obj = _PyUnicode_FromString((char *) data + offset);
+			} else {
+				obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
+				field->flags &= ~TEP_FIELD_IS_STRING;
+			}
+		} else { /* FIELD_IS_NUMERIC */
+			obj = get_field_numeric_entry(event, field, data);
+		}
+		if (!dict)
+			PyTuple_SetItem(t, n++, obj);
+		else
+			pydict_set_item_string_decref(dict, field->name, obj);
+
+	}
+
+	if (dict)
+		PyTuple_SetItem(t, n++, dict);
+
+	if (get_argument_count(handler) == (int) n + 1) {
+		all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
+			callchain);
+		PyTuple_SetItem(t, n++,	all_entries_dict);
+	} else {
+		Py_DECREF(callchain);
+	}
+
+	if (_PyTuple_Resize(&t, n) == -1)
+		Py_FatalError("error resizing Python tuple");
+
+	if (!dict)
+		call_object(handler, t, handler_name);
+	else
+		call_object(handler, t, default_handler_name);
+
+	Py_DECREF(t);
+}
+#else
+static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
+				      struct evsel *evsel __maybe_unused,
+				      struct addr_location *al __maybe_unused,
+				      struct addr_location *addr_al __maybe_unused)
+{
+	fprintf(stderr, "Tracepoint events are not supported because "
+			"perf is not linked with libtraceevent.\n");
+}
+#endif
+
+static PyObject *tuple_new(unsigned int sz)
+{
+	PyObject *t;
+
+	t = PyTuple_New(sz);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+	return t;
+}
+
+static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
+{
+#if BITS_PER_LONG == 64
+	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
+#endif
+#if BITS_PER_LONG == 32
+	return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
+#endif
+}
+
+/*
+ * Databases support only signed 64-bit numbers, so even though we are
+ * exporting a u64, it must be as s64.
+ */
+#define tuple_set_d64 tuple_set_s64
+
+static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
+{
+#if BITS_PER_LONG == 64
+	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
+#endif
+#if BITS_PER_LONG == 32
+	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
+#endif
+}
+
+static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
+{
+	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
+}
+
+static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
+{
+	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
+}
+
+static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
+{
+	return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
+}
+
+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 evsel *evsel)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(2);
+
+	tuple_set_d64(t, 0, evsel->db_id);
+	tuple_set_string(t, 1, evsel__name(evsel));
+
+	call_object(tables->evsel_handler, t, "evsel_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_machine(struct db_export *dbe,
+				 struct machine *machine)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(3);
+
+	tuple_set_d64(t, 0, machine->db_id);
+	tuple_set_s32(t, 1, machine->pid);
+	tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
+
+	call_object(tables->machine_handler, t, "machine_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_thread(struct db_export *dbe, struct thread *thread,
+				u64 main_thread_db_id, struct machine *machine)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(5);
+
+	tuple_set_d64(t, 0, thread__db_id(thread));
+	tuple_set_d64(t, 1, machine->db_id);
+	tuple_set_d64(t, 2, main_thread_db_id);
+	tuple_set_s32(t, 3, thread__pid(thread));
+	tuple_set_s32(t, 4, thread__tid(thread));
+
+	call_object(tables->thread_handler, t, "thread_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_comm(struct db_export *dbe, struct comm *comm,
+			      struct thread *thread)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(5);
+
+	tuple_set_d64(t, 0, comm->db_id);
+	tuple_set_string(t, 1, comm__str(comm));
+	tuple_set_d64(t, 2, thread__db_id(thread));
+	tuple_set_d64(t, 3, comm->start);
+	tuple_set_s32(t, 4, comm->exec);
+
+	call_object(tables->comm_handler, t, "comm_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
+				     struct comm *comm, struct thread *thread)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(3);
+
+	tuple_set_d64(t, 0, db_id);
+	tuple_set_d64(t, 1, comm->db_id);
+	tuple_set_d64(t, 2, thread__db_id(thread));
+
+	call_object(tables->comm_thread_handler, t, "comm_thread_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_dso(struct db_export *dbe, struct dso *dso,
+			     struct machine *machine)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	char sbuild_id[SBUILD_ID_SIZE];
+	PyObject *t;
+
+	build_id__sprintf(&dso->bid, sbuild_id);
+
+	t = tuple_new(5);
+
+	tuple_set_d64(t, 0, dso->db_id);
+	tuple_set_d64(t, 1, machine->db_id);
+	tuple_set_string(t, 2, dso->short_name);
+	tuple_set_string(t, 3, dso->long_name);
+	tuple_set_string(t, 4, sbuild_id);
+
+	call_object(tables->dso_handler, t, "dso_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
+				struct dso *dso)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	u64 *sym_db_id = symbol__priv(sym);
+	PyObject *t;
+
+	t = tuple_new(6);
+
+	tuple_set_d64(t, 0, *sym_db_id);
+	tuple_set_d64(t, 1, dso->db_id);
+	tuple_set_d64(t, 2, sym->start);
+	tuple_set_d64(t, 3, sym->end);
+	tuple_set_s32(t, 4, sym->binding);
+	tuple_set_string(t, 5, sym->name);
+
+	call_object(tables->symbol_handler, t, "symbol_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
+				     const char *name)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(2);
+
+	tuple_set_s32(t, 0, branch_type);
+	tuple_set_string(t, 1, name);
+
+	call_object(tables->branch_type_handler, t, "branch_type_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+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;
+
+	t = tuple_new(25);
+
+	tuple_set_d64(t, 0, es->db_id);
+	tuple_set_d64(t, 1, es->evsel->db_id);
+	tuple_set_d64(t, 2, maps__machine(es->al->maps)->db_id);
+	tuple_set_d64(t, 3, thread__db_id(es->al->thread));
+	tuple_set_d64(t, 4, es->comm_db_id);
+	tuple_set_d64(t, 5, es->dso_db_id);
+	tuple_set_d64(t, 6, es->sym_db_id);
+	tuple_set_d64(t, 7, es->offset);
+	tuple_set_d64(t, 8, es->sample->ip);
+	tuple_set_d64(t, 9, es->sample->time);
+	tuple_set_s32(t, 10, es->sample->cpu);
+	tuple_set_d64(t, 11, es->addr_dso_db_id);
+	tuple_set_d64(t, 12, es->addr_sym_db_id);
+	tuple_set_d64(t, 13, es->addr_offset);
+	tuple_set_d64(t, 14, es->sample->addr);
+	tuple_set_d64(t, 15, es->sample->period);
+	tuple_set_d64(t, 16, es->sample->weight);
+	tuple_set_d64(t, 17, es->sample->transaction);
+	tuple_set_d64(t, 18, es->sample->data_src);
+	tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
+	tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
+	tuple_set_d64(t, 21, es->call_path_id);
+	tuple_set_d64(t, 22, es->sample->insn_cnt);
+	tuple_set_d64(t, 23, es->sample->cyc_cnt);
+	tuple_set_s32(t, 24, es->sample->flags);
+
+	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_d64(t, 0, es->db_id);
+	tuple_set_d64(t, 1, es->evsel->core.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->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
+		python_export_synth(dbe, es);
+
+	return 0;
+}
+
+static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+	u64 parent_db_id, sym_db_id;
+
+	parent_db_id = cp->parent ? cp->parent->db_id : 0;
+	sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
+
+	t = tuple_new(4);
+
+	tuple_set_d64(t, 0, cp->db_id);
+	tuple_set_d64(t, 1, parent_db_id);
+	tuple_set_d64(t, 2, sym_db_id);
+	tuple_set_d64(t, 3, cp->ip);
+
+	call_object(tables->call_path_handler, t, "call_path_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_call_return(struct db_export *dbe,
+				     struct call_return *cr)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
+	PyObject *t;
+
+	t = tuple_new(14);
+
+	tuple_set_d64(t, 0, cr->db_id);
+	tuple_set_d64(t, 1, thread__db_id(cr->thread));
+	tuple_set_d64(t, 2, comm_db_id);
+	tuple_set_d64(t, 3, cr->cp->db_id);
+	tuple_set_d64(t, 4, cr->call_time);
+	tuple_set_d64(t, 5, cr->return_time);
+	tuple_set_d64(t, 6, cr->branch_count);
+	tuple_set_d64(t, 7, cr->call_ref);
+	tuple_set_d64(t, 8, cr->return_ref);
+	tuple_set_d64(t, 9, cr->cp->parent->db_id);
+	tuple_set_s32(t, 10, cr->flags);
+	tuple_set_d64(t, 11, cr->parent_db_id);
+	tuple_set_d64(t, 12, cr->insn_count);
+	tuple_set_d64(t, 13, cr->cyc_count);
+
+	call_object(tables->call_return_handler, t, "call_return_table");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_export_context_switch(struct db_export *dbe, u64 db_id,
+					struct machine *machine,
+					struct perf_sample *sample,
+					u64 th_out_id, u64 comm_out_id,
+					u64 th_in_id, u64 comm_in_id, int flags)
+{
+	struct tables *tables = container_of(dbe, struct tables, dbe);
+	PyObject *t;
+
+	t = tuple_new(9);
+
+	tuple_set_d64(t, 0, db_id);
+	tuple_set_d64(t, 1, machine->db_id);
+	tuple_set_d64(t, 2, sample->time);
+	tuple_set_s32(t, 3, sample->cpu);
+	tuple_set_d64(t, 4, th_out_id);
+	tuple_set_d64(t, 5, comm_out_id);
+	tuple_set_d64(t, 6, th_in_id);
+	tuple_set_d64(t, 7, comm_in_id);
+	tuple_set_s32(t, 8, flags);
+
+	call_object(tables->context_switch_handler, t, "context_switch");
+
+	Py_DECREF(t);
+
+	return 0;
+}
+
+static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
+				      void *data)
+{
+	struct db_export *dbe = data;
+
+	return db_export__call_return(dbe, cr, parent_db_id);
+}
+
+static void python_process_general_event(struct perf_sample *sample,
+					 struct evsel *evsel,
+					 struct addr_location *al,
+					 struct addr_location *addr_al)
+{
+	PyObject *handler, *t, *dict, *callchain;
+	static char handler_name[64];
+	unsigned n = 0;
+
+	snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
+
+	handler = get_handler(handler_name);
+	if (!handler)
+		return;
+
+	/*
+	 * Use the MAX_FIELDS to make the function expandable, though
+	 * currently there is only one item for the tuple.
+	 */
+	t = PyTuple_New(MAX_FIELDS);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+	/* ip unwinding */
+	callchain = python_process_callchain(sample, evsel, al);
+	dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
+
+	PyTuple_SetItem(t, n++, dict);
+	if (_PyTuple_Resize(&t, n) == -1)
+		Py_FatalError("error resizing Python tuple");
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static void python_process_event(union perf_event *event,
+				 struct perf_sample *sample,
+				 struct evsel *evsel,
+				 struct addr_location *al,
+				 struct addr_location *addr_al)
+{
+	struct tables *tables = &tables_global;
+
+	scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
+
+	switch (evsel->core.attr.type) {
+	case PERF_TYPE_TRACEPOINT:
+		python_process_tracepoint(sample, evsel, al, addr_al);
+		break;
+	/* Reserve for future process_hw/sw/raw APIs */
+	default:
+		if (tables->db_export_mode)
+			db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
+		else
+			python_process_general_event(sample, evsel, al, addr_al);
+	}
+}
+
+static void python_process_throttle(union perf_event *event,
+				    struct perf_sample *sample,
+				    struct machine *machine)
+{
+	const char *handler_name;
+	PyObject *handler, *t;
+
+	if (event->header.type == PERF_RECORD_THROTTLE)
+		handler_name = "throttle";
+	else
+		handler_name = "unthrottle";
+	handler = get_handler(handler_name);
+	if (!handler)
+		return;
+
+	t = tuple_new(6);
+	if (!t)
+		return;
+
+	tuple_set_u64(t, 0, event->throttle.time);
+	tuple_set_u64(t, 1, event->throttle.id);
+	tuple_set_u64(t, 2, event->throttle.stream_id);
+	tuple_set_s32(t, 3, sample->cpu);
+	tuple_set_s32(t, 4, sample->pid);
+	tuple_set_s32(t, 5, sample->tid);
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static void python_do_process_switch(union perf_event *event,
+				     struct perf_sample *sample,
+				     struct machine *machine)
+{
+	const char *handler_name = "context_switch";
+	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
+	bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
+	pid_t np_pid = -1, np_tid = -1;
+	PyObject *handler, *t;
+
+	handler = get_handler(handler_name);
+	if (!handler)
+		return;
+
+	if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
+		np_pid = event->context_switch.next_prev_pid;
+		np_tid = event->context_switch.next_prev_tid;
+	}
+
+	t = tuple_new(11);
+	if (!t)
+		return;
+
+	tuple_set_u64(t, 0, sample->time);
+	tuple_set_s32(t, 1, sample->cpu);
+	tuple_set_s32(t, 2, sample->pid);
+	tuple_set_s32(t, 3, sample->tid);
+	tuple_set_s32(t, 4, np_pid);
+	tuple_set_s32(t, 5, np_tid);
+	tuple_set_s32(t, 6, machine->pid);
+	tuple_set_bool(t, 7, out);
+	tuple_set_bool(t, 8, out_preempt);
+	tuple_set_s32(t, 9, sample->machine_pid);
+	tuple_set_s32(t, 10, sample->vcpu);
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static void python_process_switch(union perf_event *event,
+				  struct perf_sample *sample,
+				  struct machine *machine)
+{
+	struct tables *tables = &tables_global;
+
+	if (tables->db_export_mode)
+		db_export__switch(&tables->dbe, event, sample, machine);
+	else
+		python_do_process_switch(event, sample, machine);
+}
+
+static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
+					  union perf_event *event)
+{
+	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
+	u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+	const char *handler_name = "auxtrace_error";
+	unsigned long long tm = e->time;
+	const char *msg = e->msg;
+	PyObject *handler, *t;
+
+	handler = get_handler(handler_name);
+	if (!handler)
+		return;
+
+	if (!e->fmt) {
+		tm = 0;
+		msg = (const char *)&e->time;
+	}
+
+	t = tuple_new(11);
+
+	tuple_set_u32(t, 0, e->type);
+	tuple_set_u32(t, 1, e->code);
+	tuple_set_s32(t, 2, e->cpu);
+	tuple_set_s32(t, 3, e->pid);
+	tuple_set_s32(t, 4, e->tid);
+	tuple_set_u64(t, 5, e->ip);
+	tuple_set_u64(t, 6, tm);
+	tuple_set_string(t, 7, msg);
+	tuple_set_u32(t, 8, cpumode);
+	tuple_set_s32(t, 9, e->machine_pid);
+	tuple_set_s32(t, 10, e->vcpu);
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static void get_handler_name(char *str, size_t size,
+			     struct evsel *evsel)
+{
+	char *p = str;
+
+	scnprintf(str, size, "stat__%s", evsel__name(evsel));
+
+	while ((p = strchr(p, ':'))) {
+		*p = '_';
+		p++;
+	}
+}
+
+static void
+process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
+	     struct perf_counts_values *count)
+{
+	PyObject *handler, *t;
+	static char handler_name[256];
+	int n = 0;
+
+	t = PyTuple_New(MAX_FIELDS);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+	get_handler_name(handler_name, sizeof(handler_name),
+			 counter);
+
+	handler = get_handler(handler_name);
+	if (!handler) {
+		pr_debug("can't find python handler %s\n", handler_name);
+		return;
+	}
+
+	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
+	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
+
+	tuple_set_u64(t, n++, tstamp);
+	tuple_set_u64(t, n++, count->val);
+	tuple_set_u64(t, n++, count->ena);
+	tuple_set_u64(t, n++, count->run);
+
+	if (_PyTuple_Resize(&t, n) == -1)
+		Py_FatalError("error resizing Python tuple");
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static void python_process_stat(struct perf_stat_config *config,
+				struct evsel *counter, u64 tstamp)
+{
+	struct perf_thread_map *threads = counter->core.threads;
+	struct perf_cpu_map *cpus = counter->core.cpus;
+	int cpu, thread;
+
+	for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
+		for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
+			process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
+				     perf_thread_map__pid(threads, thread), tstamp,
+				     perf_counts(counter->counts, cpu, thread));
+		}
+	}
+}
+
+static void python_process_stat_interval(u64 tstamp)
+{
+	PyObject *handler, *t;
+	static const char handler_name[] = "stat__interval";
+	int n = 0;
+
+	t = PyTuple_New(MAX_FIELDS);
+	if (!t)
+		Py_FatalError("couldn't create Python tuple");
+
+	handler = get_handler(handler_name);
+	if (!handler) {
+		pr_debug("can't find python handler %s\n", handler_name);
+		return;
+	}
+
+	tuple_set_u64(t, n++, tstamp);
+
+	if (_PyTuple_Resize(&t, n) == -1)
+		Py_FatalError("error resizing Python tuple");
+
+	call_object(handler, t, handler_name);
+
+	Py_DECREF(t);
+}
+
+static int perf_script_context_init(void)
+{
+	PyObject *perf_script_context;
+	PyObject *perf_trace_context;
+	PyObject *dict;
+	int ret;
+
+	perf_trace_context = PyImport_AddModule("perf_trace_context");
+	if (!perf_trace_context)
+		return -1;
+	dict = PyModule_GetDict(perf_trace_context);
+	if (!dict)
+		return -1;
+
+	perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
+	if (!perf_script_context)
+		return -1;
+
+	ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
+	if (!ret)
+		ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
+	Py_DECREF(perf_script_context);
+	return ret;
+}
+
+static int run_start_sub(void)
+{
+	main_module = PyImport_AddModule("__main__");
+	if (main_module == NULL)
+		return -1;
+	Py_INCREF(main_module);
+
+	main_dict = PyModule_GetDict(main_module);
+	if (main_dict == NULL)
+		goto error;
+	Py_INCREF(main_dict);
+
+	if (perf_script_context_init())
+		goto error;
+
+	try_call_object("trace_begin", NULL);
+
+	return 0;
+
+error:
+	Py_XDECREF(main_dict);
+	Py_XDECREF(main_module);
+	return -1;
+}
+
+#define SET_TABLE_HANDLER_(name, handler_name, table_name) do {		\
+	tables->handler_name = get_handler(#table_name);		\
+	if (tables->handler_name)					\
+		tables->dbe.export_ ## name = python_export_ ## name;	\
+} while (0)
+
+#define SET_TABLE_HANDLER(name) \
+	SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
+
+static void set_table_handlers(struct tables *tables)
+{
+	const char *perf_db_export_mode = "perf_db_export_mode";
+	const char *perf_db_export_calls = "perf_db_export_calls";
+	const char *perf_db_export_callchains = "perf_db_export_callchains";
+	PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
+	bool export_calls = false;
+	bool export_callchains = false;
+	int ret;
+
+	memset(tables, 0, sizeof(struct tables));
+	if (db_export__init(&tables->dbe))
+		Py_FatalError("failed to initialize export");
+
+	db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
+	if (!db_export_mode)
+		return;
+
+	ret = PyObject_IsTrue(db_export_mode);
+	if (ret == -1)
+		handler_call_die(perf_db_export_mode);
+	if (!ret)
+		return;
+
+	/* handle export calls */
+	tables->dbe.crp = NULL;
+	db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
+	if (db_export_calls) {
+		ret = PyObject_IsTrue(db_export_calls);
+		if (ret == -1)
+			handler_call_die(perf_db_export_calls);
+		export_calls = !!ret;
+	}
+
+	if (export_calls) {
+		tables->dbe.crp =
+			call_return_processor__new(python_process_call_return,
+						   &tables->dbe);
+		if (!tables->dbe.crp)
+			Py_FatalError("failed to create calls processor");
+	}
+
+	/* handle export callchains */
+	tables->dbe.cpr = NULL;
+	db_export_callchains = PyDict_GetItemString(main_dict,
+						    perf_db_export_callchains);
+	if (db_export_callchains) {
+		ret = PyObject_IsTrue(db_export_callchains);
+		if (ret == -1)
+			handler_call_die(perf_db_export_callchains);
+		export_callchains = !!ret;
+	}
+
+	if (export_callchains) {
+		/*
+		 * Attempt to use the call path root from the call return
+		 * processor, if the call return processor is in use. Otherwise,
+		 * we allocate a new call path root. This prevents exporting
+		 * duplicate call path ids when both are in use simultaneously.
+		 */
+		if (tables->dbe.crp)
+			tables->dbe.cpr = tables->dbe.crp->cpr;
+		else
+			tables->dbe.cpr = call_path_root__new();
+
+		if (!tables->dbe.cpr)
+			Py_FatalError("failed to create call path root");
+	}
+
+	tables->db_export_mode = true;
+	/*
+	 * Reserve per symbol space for symbol->db_id via symbol__priv()
+	 */
+	symbol_conf.priv_size = sizeof(u64);
+
+	SET_TABLE_HANDLER(evsel);
+	SET_TABLE_HANDLER(machine);
+	SET_TABLE_HANDLER(thread);
+	SET_TABLE_HANDLER(comm);
+	SET_TABLE_HANDLER(comm_thread);
+	SET_TABLE_HANDLER(dso);
+	SET_TABLE_HANDLER(symbol);
+	SET_TABLE_HANDLER(branch_type);
+	SET_TABLE_HANDLER(sample);
+	SET_TABLE_HANDLER(call_path);
+	SET_TABLE_HANDLER(call_return);
+	SET_TABLE_HANDLER(context_switch);
+
+	/*
+	 * 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
+static void _free_command_line(const char **command_line, int num)
+{
+	free(command_line);
+}
+#else
+static void _free_command_line(wchar_t **command_line, int num)
+{
+	int i;
+	for (i = 0; i < num; i++)
+		PyMem_RawFree(command_line[i]);
+	free(command_line);
+}
+#endif
+
+
+/*
+ * Start trace script
+ */
+static int python_start_script(const char *script, int argc, const char **argv,
+			       struct perf_session *session)
+{
+	struct tables *tables = &tables_global;
+#if PY_MAJOR_VERSION < 3
+	const char **command_line;
+#else
+	wchar_t **command_line;
+#endif
+	/*
+	 * Use a non-const name variable to cope with python 2.6's
+	 * PyImport_AppendInittab prototype
+	 */
+	char buf[PATH_MAX], name[19] = "perf_trace_context";
+	int i, err = 0;
+	FILE *fp;
+
+	scripting_context->session = session;
+#if PY_MAJOR_VERSION < 3
+	command_line = malloc((argc + 1) * sizeof(const char *));
+	command_line[0] = script;
+	for (i = 1; i < argc + 1; i++)
+		command_line[i] = argv[i - 1];
+	PyImport_AppendInittab(name, initperf_trace_context);
+#else
+	command_line = malloc((argc + 1) * sizeof(wchar_t *));
+	command_line[0] = Py_DecodeLocale(script, NULL);
+	for (i = 1; i < argc + 1; i++)
+		command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
+	PyImport_AppendInittab(name, PyInit_perf_trace_context);
+#endif
+	Py_Initialize();
+
+#if PY_MAJOR_VERSION < 3
+	PySys_SetArgv(argc + 1, (char **)command_line);
+#else
+	PySys_SetArgv(argc + 1, command_line);
+#endif
+
+	fp = fopen(script, "r");
+	if (!fp) {
+		sprintf(buf, "Can't open python script \"%s\"", script);
+		perror(buf);
+		err = -1;
+		goto error;
+	}
+
+	err = PyRun_SimpleFile(fp, script);
+	if (err) {
+		fprintf(stderr, "Error running python script %s\n", script);
+		goto error;
+	}
+
+	err = run_start_sub();
+	if (err) {
+		fprintf(stderr, "Error starting python script %s\n", script);
+		goto error;
+	}
+
+	set_table_handlers(tables);
+
+	if (tables->db_export_mode) {
+		err = db_export__branch_types(&tables->dbe);
+		if (err)
+			goto error;
+	}
+
+	_free_command_line(command_line, argc + 1);
+
+	return err;
+error:
+	Py_Finalize();
+	_free_command_line(command_line, argc + 1);
+
+	return err;
+}
+
+static int python_flush_script(void)
+{
+	return 0;
+}
+
+/*
+ * Stop trace script
+ */
+static int python_stop_script(void)
+{
+	struct tables *tables = &tables_global;
+
+	try_call_object("trace_end", NULL);
+
+	db_export__exit(&tables->dbe);
+
+	Py_XDECREF(main_dict);
+	Py_XDECREF(main_module);
+	Py_Finalize();
+
+	return 0;
+}
+
+#ifdef HAVE_LIBTRACEEVENT
+static int python_generate_script(struct tep_handle *pevent, const char *outfile)
+{
+	int i, not_first, count, nr_events;
+	struct tep_event **all_events;
+	struct tep_event *event = NULL;
+	struct tep_format_field *f;
+	char fname[PATH_MAX];
+	FILE *ofp;
+
+	sprintf(fname, "%s.py", outfile);
+	ofp = fopen(fname, "w");
+	if (ofp == NULL) {
+		fprintf(stderr, "couldn't open %s\n", fname);
+		return -1;
+	}
+	fprintf(ofp, "# perf script event handlers, "
+		"generated by perf script -g python\n");
+
+	fprintf(ofp, "# Licensed under the terms of the GNU GPL"
+		" License version 2\n\n");
+
+	fprintf(ofp, "# The common_* event handler fields are the most useful "
+		"fields common to\n");
+
+	fprintf(ofp, "# all events.  They don't necessarily correspond to "
+		"the 'common_*' fields\n");
+
+	fprintf(ofp, "# in the format files.  Those fields not available as "
+		"handler params can\n");
+
+	fprintf(ofp, "# be retrieved using Python functions of the form "
+		"common_*(context).\n");
+
+	fprintf(ofp, "# See the perf-script-python Documentation for the list "
+		"of available functions.\n\n");
+
+	fprintf(ofp, "from __future__ import print_function\n\n");
+	fprintf(ofp, "import os\n");
+	fprintf(ofp, "import sys\n\n");
+
+	fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
+	fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
+	fprintf(ofp, "\nfrom perf_trace_context import *\n");
+	fprintf(ofp, "from Core import *\n\n\n");
+
+	fprintf(ofp, "def trace_begin():\n");
+	fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
+
+	fprintf(ofp, "def trace_end():\n");
+	fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
+
+	nr_events = tep_get_events_count(pevent);
+	all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
+
+	for (i = 0; all_events && i < nr_events; i++) {
+		event = all_events[i];
+		fprintf(ofp, "def %s__%s(", event->system, event->name);
+		fprintf(ofp, "event_name, ");
+		fprintf(ofp, "context, ");
+		fprintf(ofp, "common_cpu,\n");
+		fprintf(ofp, "\tcommon_secs, ");
+		fprintf(ofp, "common_nsecs, ");
+		fprintf(ofp, "common_pid, ");
+		fprintf(ofp, "common_comm,\n\t");
+		fprintf(ofp, "common_callchain, ");
+
+		not_first = 0;
+		count = 0;
+
+		for (f = event->format.fields; f; f = f->next) {
+			if (not_first++)
+				fprintf(ofp, ", ");
+			if (++count % 5 == 0)
+				fprintf(ofp, "\n\t");
+
+			fprintf(ofp, "%s", f->name);
+		}
+		if (not_first++)
+			fprintf(ofp, ", ");
+		if (++count % 5 == 0)
+			fprintf(ofp, "\n\t\t");
+		fprintf(ofp, "perf_sample_dict");
+
+		fprintf(ofp, "):\n");
+
+		fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
+			"common_secs, common_nsecs,\n\t\t\t"
+			"common_pid, common_comm)\n\n");
+
+		fprintf(ofp, "\t\tprint(\"");
+
+		not_first = 0;
+		count = 0;
+
+		for (f = event->format.fields; f; f = f->next) {
+			if (not_first++)
+				fprintf(ofp, ", ");
+			if (count && count % 3 == 0) {
+				fprintf(ofp, "\" \\\n\t\t\"");
+			}
+			count++;
+
+			fprintf(ofp, "%s=", f->name);
+			if (f->flags & TEP_FIELD_IS_STRING ||
+			    f->flags & TEP_FIELD_IS_FLAG ||
+			    f->flags & TEP_FIELD_IS_ARRAY ||
+			    f->flags & TEP_FIELD_IS_SYMBOLIC)
+				fprintf(ofp, "%%s");
+			else if (f->flags & TEP_FIELD_IS_SIGNED)
+				fprintf(ofp, "%%d");
+			else
+				fprintf(ofp, "%%u");
+		}
+
+		fprintf(ofp, "\" %% \\\n\t\t(");
+
+		not_first = 0;
+		count = 0;
+
+		for (f = event->format.fields; f; f = f->next) {
+			if (not_first++)
+				fprintf(ofp, ", ");
+
+			if (++count % 5 == 0)
+				fprintf(ofp, "\n\t\t");
+
+			if (f->flags & TEP_FIELD_IS_FLAG) {
+				if ((count - 1) % 5 != 0) {
+					fprintf(ofp, "\n\t\t");
+					count = 4;
+				}
+				fprintf(ofp, "flag_str(\"");
+				fprintf(ofp, "%s__%s\", ", event->system,
+					event->name);
+				fprintf(ofp, "\"%s\", %s)", f->name,
+					f->name);
+			} else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
+				if ((count - 1) % 5 != 0) {
+					fprintf(ofp, "\n\t\t");
+					count = 4;
+				}
+				fprintf(ofp, "symbol_str(\"");
+				fprintf(ofp, "%s__%s\", ", event->system,
+					event->name);
+				fprintf(ofp, "\"%s\", %s)", f->name,
+					f->name);
+			} else
+				fprintf(ofp, "%s", f->name);
+		}
+
+		fprintf(ofp, "))\n\n");
+
+		fprintf(ofp, "\t\tprint('Sample: {'+"
+			"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
+
+		fprintf(ofp, "\t\tfor node in common_callchain:");
+		fprintf(ofp, "\n\t\t\tif 'sym' in node:");
+		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
+		fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
+		fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
+		fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
+		fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
+		fprintf(ofp, "\n\t\t\telse:");
+		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
+		fprintf(ofp, "\t\tprint()\n\n");
+
+	}
+
+	fprintf(ofp, "def trace_unhandled(event_name, context, "
+		"event_fields_dict, perf_sample_dict):\n");
+
+	fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
+	fprintf(ofp, "\t\tprint('Sample: {'+"
+		"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
+
+	fprintf(ofp, "def print_header("
+		"event_name, cpu, secs, nsecs, pid, comm):\n"
+		"\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
+		"(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
+
+	fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
+		"\treturn delimiter.join"
+		"(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
+
+	fclose(ofp);
+
+	fprintf(stderr, "generated Python script: %s\n", fname);
+
+	return 0;
+}
+#else
+static int python_generate_script(struct tep_handle *pevent __maybe_unused,
+				  const char *outfile __maybe_unused)
+{
+	fprintf(stderr, "Generating Python perf-script is not supported."
+		"  Install libtraceevent and rebuild perf to enable it.\n"
+		"For example:\n  # apt install libtraceevent-dev (ubuntu)"
+		"\n  # yum install libtraceevent-devel (Fedora)"
+		"\n  etc.\n");
+	return -1;
+}
+#endif
+
+struct scripting_ops python_scripting_ops = {
+	.name			= "Python",
+	.dirname		= "python",
+	.start_script		= python_start_script,
+	.flush_script		= python_flush_script,
+	.stop_script		= python_stop_script,
+	.process_event		= python_process_event,
+	.process_switch		= python_process_switch,
+	.process_auxtrace_error	= python_process_auxtrace_error,
+	.process_stat		= python_process_stat,
+	.process_stat_interval	= python_process_stat_interval,
+	.process_throttle	= python_process_throttle,
+	.generate_script	= python_generate_script,
+};