1	/*
2	* trace-event-python. Feed trace events to an embedded Python interpreter.
3	*
4	* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*
20	*/
21
22	#include <Python.h>
23
24	#include <inttypes.h>
25	#include <stdio.h>
26	#include <stdlib.h>
27	#include <string.h>
28	#include <stdbool.h>
29	#include <errno.h>
30	#include <linux/bitmap.h>
31	#include <linux/compiler.h>
32	#include <linux/time64.h>
33	#ifdef HAVE_LIBTRACEEVENT
34	#include <event-parse.h>
35	#endif
36
37	#include "../build-id.h"
38	#include "../counts.h"
39	#include "../debug.h"
40	#include "../dso.h"
41	#include "../callchain.h"
42	#include "../env.h"
43	#include "../evsel.h"
44	#include "../event.h"
45	#include "../thread.h"
46	#include "../comm.h"
47	#include "../machine.h"
48	#include "../mem-info.h"
49	#include "../db-export.h"
50	#include "../thread-stack.h"
51	#include "../trace-event.h"
52	#include "../call-path.h"
53	#include "map.h"
54	#include "symbol.h"
55	#include "thread_map.h"
56	#include "print_binary.h"
57	#include "stat.h"
58	#include "mem-events.h"
59	#include "util/perf_regs.h"
60
61	#define _PyUnicode_FromString(arg) \
62	PyUnicode_FromString(arg)
63	#define _PyUnicode_FromStringAndSize(arg1, arg2) \
64	PyUnicode_FromStringAndSize((arg1), (arg2))
65	#define _PyBytes_FromStringAndSize(arg1, arg2) \
66	PyBytes_FromStringAndSize((arg1), (arg2))
67	#define _PyLong_FromLong(arg) \
68	PyLong_FromLong(arg)
69	#define _PyLong_AsLong(arg) \
70	PyLong_AsLong(arg)
71	#define _PyCapsule_New(arg1, arg2, arg3) \
72	PyCapsule_New((arg1), (arg2), (arg3))
73
74	PyMODINIT_FUNC PyInit_perf_trace_context(void);
75
76	#ifdef HAVE_LIBTRACEEVENT
77	#define TRACE_EVENT_TYPE_MAX \
78	((1 << (sizeof(unsigned short) * 8)) - 1)
79
80	#define N_COMMON_FIELDS 7
81
82	static char *cur_field_name;
83	static int zero_flag_atom;
84	#endif
85
86	#define MAX_FIELDS 64
87
88	extern struct scripting_context *scripting_context;
89
90	static PyObject *main_module, *main_dict;
91
92	struct tables {
93	struct db_export dbe;
94	PyObject *evsel_handler;
95	PyObject *machine_handler;
96	PyObject *thread_handler;
97	PyObject *comm_handler;
98	PyObject *comm_thread_handler;
99	PyObject *dso_handler;
100	PyObject *symbol_handler;
101	PyObject *branch_type_handler;
102	PyObject *sample_handler;
103	PyObject *call_path_handler;
104	PyObject *call_return_handler;
105	PyObject *synth_handler;
106	PyObject *context_switch_handler;
107	bool db_export_mode;
108	};
109
110	static struct tables tables_global;
111
112	static void handler_call_die(const char *handler_name) __noreturn;
113	static void handler_call_die(const char *handler_name)
114	{
115	PyErr_Print();
116	Py_FatalError("problem in Python trace event handler");
117	// Py_FatalError does not return
118	// but we have to make the compiler happy
119	abort();
120	}
121
122	/*
123	* Insert val into the dictionary and decrement the reference counter.
124	* This is necessary for dictionaries since PyDict_SetItemString() does not
125	* steal a reference, as opposed to PyTuple_SetItem().
126	*/
127	static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
128	{
129	PyDict_SetItemString(dict, key, val);
130	Py_DECREF(val);
131	}
132
133	static PyObject *get_handler(const char *handler_name)
134	{
135	PyObject *handler;
136
137	handler = PyDict_GetItemString(main_dict, handler_name);
138	if (handler && !PyCallable_Check(handler))
139	return NULL;
140	return handler;
141	}
142
143	static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
144	{
145	PyObject *retval;
146
147	retval = PyObject_CallObject(handler, args);
148	if (retval == NULL)
149	handler_call_die(handler_name: die_msg);
150	Py_DECREF(retval);
151	}
152
153	static void try_call_object(const char *handler_name, PyObject *args)
154	{
155	PyObject *handler;
156
157	handler = get_handler(handler_name);
158	if (handler)
159	call_object(handler, args, handler_name);
160	}
161
162	#ifdef HAVE_LIBTRACEEVENT
163	static int get_argument_count(PyObject *handler)
164	{
165	int arg_count = 0;
166
167	PyObject *code_obj = code_obj = PyObject_GetAttrString(handler, "__code__");
168	PyErr_Clear();
169	if (code_obj) {
170	PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
171	"co_argcount");
172	if (arg_count_obj) {
173	arg_count = (int) _PyLong_AsLong(arg_count_obj);
174	Py_DECREF(arg_count_obj);
175	}
176	Py_DECREF(code_obj);
177	}
178	return arg_count;
179	}
180
181	static void define_value(enum tep_print_arg_type field_type,
182	const char *ev_name,
183	const char *field_name,
184	const char *field_value,
185	const char *field_str)
186	{
187	const char *handler_name = "define_flag_value";
188	PyObject *t;
189	unsigned long long value;
190	unsigned n = 0;
191
192	if (field_type == TEP_PRINT_SYMBOL)
193	handler_name = "define_symbolic_value";
194
195	t = PyTuple_New(4);
196	if (!t)
197	Py_FatalError("couldn't create Python tuple");
198
199	value = eval_flag(field_value);
200
201	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
202	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
203	PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
204	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
205
206	try_call_object(handler_name, t);
207
208	Py_DECREF(t);
209	}
210
211	static void define_values(enum tep_print_arg_type field_type,
212	struct tep_print_flag_sym *field,
213	const char *ev_name,
214	const char *field_name)
215	{
216	define_value(field_type, ev_name, field_name, field->value,
217	field->str);
218
219	if (field->next)
220	define_values(field_type, field->next, ev_name, field_name);
221	}
222
223	static void define_field(enum tep_print_arg_type field_type,
224	const char *ev_name,
225	const char *field_name,
226	const char *delim)
227	{
228	const char *handler_name = "define_flag_field";
229	PyObject *t;
230	unsigned n = 0;
231
232	if (field_type == TEP_PRINT_SYMBOL)
233	handler_name = "define_symbolic_field";
234
235	if (field_type == TEP_PRINT_FLAGS)
236	t = PyTuple_New(3);
237	else
238	t = PyTuple_New(2);
239	if (!t)
240	Py_FatalError("couldn't create Python tuple");
241
242	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
243	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
244	if (field_type == TEP_PRINT_FLAGS)
245	PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
246
247	try_call_object(handler_name, t);
248
249	Py_DECREF(t);
250	}
251
252	static void define_event_symbols(struct tep_event *event,
253	const char *ev_name,
254	struct tep_print_arg *args)
255	{
256	if (args == NULL)
257	return;
258
259	switch (args->type) {
260	case TEP_PRINT_NULL:
261	break;
262	case TEP_PRINT_ATOM:
263	define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
264	args->atom.atom);
265	zero_flag_atom = 0;
266	break;
267	case TEP_PRINT_FIELD:
268	free(cur_field_name);
269	cur_field_name = strdup(args->field.name);
270	break;
271	case TEP_PRINT_FLAGS:
272	define_event_symbols(event, ev_name, args->flags.field);
273	define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
274	args->flags.delim);
275	define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
276	cur_field_name);
277	break;
278	case TEP_PRINT_SYMBOL:
279	define_event_symbols(event, ev_name, args->symbol.field);
280	define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
281	define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
282	cur_field_name);
283	break;
284	case TEP_PRINT_HEX:
285	case TEP_PRINT_HEX_STR:
286	define_event_symbols(event, ev_name, args->hex.field);
287	define_event_symbols(event, ev_name, args->hex.size);
288	break;
289	case TEP_PRINT_INT_ARRAY:
290	define_event_symbols(event, ev_name, args->int_array.field);
291	define_event_symbols(event, ev_name, args->int_array.count);
292	define_event_symbols(event, ev_name, args->int_array.el_size);
293	break;
294	case TEP_PRINT_STRING:
295	break;
296	case TEP_PRINT_TYPE:
297	define_event_symbols(event, ev_name, args->typecast.item);
298	break;
299	case TEP_PRINT_OP:
300	if (strcmp(args->op.op, ":") == 0)
301	zero_flag_atom = 1;
302	define_event_symbols(event, ev_name, args->op.left);
303	define_event_symbols(event, ev_name, args->op.right);
304	break;
305	default:
306	/* gcc warns for these? */
307	case TEP_PRINT_BSTRING:
308	case TEP_PRINT_DYNAMIC_ARRAY:
309	case TEP_PRINT_DYNAMIC_ARRAY_LEN:
310	case TEP_PRINT_FUNC:
311	case TEP_PRINT_BITMASK:
312	/* we should warn... */
313	return;
314	}
315
316	if (args->next)
317	define_event_symbols(event, ev_name, args->next);
318	}
319
320	static PyObject *get_field_numeric_entry(struct tep_event *event,
321	struct tep_format_field *field, void *data)
322	{
323	bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
324	PyObject *obj = NULL, *list = NULL;
325	unsigned long long val;
326	unsigned int item_size, n_items, i;
327
328	if (is_array) {
329	list = PyList_New(field->arraylen);
330	if (!list)
331	Py_FatalError("couldn't create Python list");
332	item_size = field->size / field->arraylen;
333	n_items = field->arraylen;
334	} else {
335	item_size = field->size;
336	n_items = 1;
337	}
338
339	for (i = 0; i < n_items; i++) {
340
341	val = read_size(event, data + field->offset + i * item_size,
342	item_size);
343	if (field->flags & TEP_FIELD_IS_SIGNED) {
344	if ((long long)val >= LONG_MIN &&
345	(long long)val <= LONG_MAX)
346	obj = _PyLong_FromLong(val);
347	else
348	obj = PyLong_FromLongLong(val);
349	} else {
350	if (val <= LONG_MAX)
351	obj = _PyLong_FromLong(val);
352	else
353	obj = PyLong_FromUnsignedLongLong(val);
354	}
355	if (is_array)
356	PyList_SET_ITEM(list, i, obj);
357	}
358	if (is_array)
359	obj = list;
360	return obj;
361	}
362	#endif
363
364	static const char *get_dsoname(struct map *map)
365	{
366	const char *dsoname = "[unknown]";
367	struct dso *dso = map ? map__dso(map) : NULL;
368
369	if (dso) {
370	if (symbol_conf.show_kernel_path && dso__long_name(dso))
371	dsoname = dso__long_name(dso);
372	else
373	dsoname = dso__name(dso);
374	}
375
376	return dsoname;
377	}
378
379	static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
380	{
381	unsigned long offset;
382
383	if (al->addr < sym->end)
384	offset = al->addr - sym->start;
385	else
386	offset = al->addr - map__start(al->map) - sym->start;
387
388	return offset;
389	}
390
391	static PyObject *python_process_callchain(struct perf_sample *sample,
392	struct evsel *evsel,
393	struct addr_location *al)
394	{
395	PyObject *pylist;
396	struct callchain_cursor *cursor;
397
398	pylist = PyList_New(0);
399	if (!pylist)
400	Py_FatalError("couldn't create Python list");
401
402	if (!symbol_conf.use_callchain || !sample->callchain)
403	goto exit;
404
405	cursor = get_tls_callchain_cursor();
406	if (thread__resolve_callchain(thread: al->thread, cursor, evsel,
407	sample, NULL, NULL,
408	max_stack: scripting_max_stack) != 0) {
409	pr_err("Failed to resolve callchain. Skipping\n");
410	goto exit;
411	}
412	callchain_cursor_commit(cursor);
413
414
415	while (1) {
416	PyObject *pyelem;
417	struct callchain_cursor_node *node;
418	node = callchain_cursor_current(cursor);
419	if (!node)
420	break;
421
422	pyelem = PyDict_New();
423	if (!pyelem)
424	Py_FatalError("couldn't create Python dictionary");
425
426
427	pydict_set_item_string_decref(pyelem, "ip",
428	PyLong_FromUnsignedLongLong(node->ip));
429
430	if (node->ms.sym) {
431	PyObject *pysym = PyDict_New();
432	if (!pysym)
433	Py_FatalError("couldn't create Python dictionary");
434	pydict_set_item_string_decref(pysym, "start",
435	PyLong_FromUnsignedLongLong(node->ms.sym->start));
436	pydict_set_item_string_decref(pysym, "end",
437	PyLong_FromUnsignedLongLong(node->ms.sym->end));
438	pydict_set_item_string_decref(pysym, "binding",
439	_PyLong_FromLong(node->ms.sym->binding));
440	pydict_set_item_string_decref(pysym, "name",
441	_PyUnicode_FromStringAndSize(node->ms.sym->name,
442	node->ms.sym->namelen));
443	pydict_set_item_string_decref(pyelem, "sym", pysym);
444
445	if (node->ms.map) {
446	struct map *map = node->ms.map;
447	struct addr_location node_al;
448	unsigned long offset;
449
450	addr_location__init(&node_al);
451	node_al.addr = map__map_ip(map, node->ip);
452	node_al.map = map__get(map);
453	offset = get_offset(sym: node->ms.sym, al: &node_al);
454	addr_location__exit(&node_al);
455
456	pydict_set_item_string_decref(
457	pyelem, "sym_off",
458	PyLong_FromUnsignedLongLong(offset));
459	}
460	if (node->srcline && strcmp(":0", node->srcline)) {
461	pydict_set_item_string_decref(
462	pyelem, "sym_srcline",
463	_PyUnicode_FromString(node->srcline));
464	}
465	}
466
467	if (node->ms.map) {
468	const char *dsoname = get_dsoname(map: node->ms.map);
469
470	pydict_set_item_string_decref(pyelem, "dso",
471	_PyUnicode_FromString(dsoname));
472	}
473
474	callchain_cursor_advance(cursor);
475	PyList_Append(pylist, pyelem);
476	Py_DECREF(pyelem);
477	}
478
479	exit:
480	return pylist;
481	}
482
483	static PyObject *python_process_brstack(struct perf_sample *sample,
484	struct thread *thread)
485	{
486	struct branch_stack *br = sample->branch_stack;
487	struct branch_entry *entries = perf_sample__branch_entries(sample);
488	PyObject *pylist;
489	u64 i;
490
491	pylist = PyList_New(0);
492	if (!pylist)
493	Py_FatalError("couldn't create Python list");
494
495	if (!(br && br->nr))
496	goto exit;
497
498	for (i = 0; i < br->nr; i++) {
499	PyObject *pyelem;
500	struct addr_location al;
501	const char *dsoname;
502
503	pyelem = PyDict_New();
504	if (!pyelem)
505	Py_FatalError("couldn't create Python dictionary");
506
507	pydict_set_item_string_decref(pyelem, "from",
508	PyLong_FromUnsignedLongLong(entries[i].from));
509	pydict_set_item_string_decref(pyelem, "to",
510	PyLong_FromUnsignedLongLong(entries[i].to));
511	pydict_set_item_string_decref(pyelem, "mispred",
512	PyBool_FromLong(entries[i].flags.mispred));
513	pydict_set_item_string_decref(pyelem, "predicted",
514	PyBool_FromLong(entries[i].flags.predicted));
515	pydict_set_item_string_decref(pyelem, "in_tx",
516	PyBool_FromLong(entries[i].flags.in_tx));
517	pydict_set_item_string_decref(pyelem, "abort",
518	PyBool_FromLong(entries[i].flags.abort));
519	pydict_set_item_string_decref(pyelem, "cycles",
520	PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
521
522	addr_location__init(&al);
523	thread__find_map_fb(thread, cpumode: sample->cpumode,
524	addr: entries[i].from, al: &al);
525	dsoname = get_dsoname(map: al.map);
526	pydict_set_item_string_decref(pyelem, "from_dsoname",
527	_PyUnicode_FromString(dsoname));
528
529	thread__find_map_fb(thread, cpumode: sample->cpumode,
530	addr: entries[i].to, al: &al);
531	dsoname = get_dsoname(map: al.map);
532	pydict_set_item_string_decref(pyelem, "to_dsoname",
533	_PyUnicode_FromString(dsoname));
534
535	addr_location__exit(&al);
536	PyList_Append(pylist, pyelem);
537	Py_DECREF(pyelem);
538	}
539
540	exit:
541	return pylist;
542	}
543
544	static int get_symoff(struct symbol *sym, struct addr_location *al,
545	bool print_off, char *bf, int size)
546	{
547	unsigned long offset;
548
549	if (!sym || !sym->name[0])
550	return scnprintf(buf: bf, size, fmt: "%s", "[unknown]");
551
552	if (!print_off)
553	return scnprintf(buf: bf, size, fmt: "%s", sym->name);
554
555	offset = get_offset(sym, al);
556
557	return scnprintf(buf: bf, size, fmt: "%s+0x%x", sym->name, offset);
558	}
559
560	static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
561	{
562	if (!flags->mispred && !flags->predicted)
563	return scnprintf(buf: bf, size, fmt: "%s", "-");
564
565	if (flags->mispred)
566	return scnprintf(buf: bf, size, fmt: "%s", "M");
567
568	return scnprintf(buf: bf, size, fmt: "%s", "P");
569	}
570
571	static PyObject *python_process_brstacksym(struct perf_sample *sample,
572	struct thread *thread)
573	{
574	struct branch_stack *br = sample->branch_stack;
575	struct branch_entry *entries = perf_sample__branch_entries(sample);
576	PyObject *pylist;
577	u64 i;
578	char bf[512];
579
580	pylist = PyList_New(0);
581	if (!pylist)
582	Py_FatalError("couldn't create Python list");
583
584	if (!(br && br->nr))
585	goto exit;
586
587	for (i = 0; i < br->nr; i++) {
588	PyObject *pyelem;
589	struct addr_location al;
590
591	addr_location__init(&al);
592	pyelem = PyDict_New();
593	if (!pyelem)
594	Py_FatalError("couldn't create Python dictionary");
595
596	thread__find_symbol_fb(thread, cpumode: sample->cpumode,
597	addr: entries[i].from, al: &al);
598	get_symoff(sym: al.sym, al: &al, print_off: true, bf, size: sizeof(bf));
599	pydict_set_item_string_decref(pyelem, "from",
600	_PyUnicode_FromString(bf));
601
602	thread__find_symbol_fb(thread, cpumode: sample->cpumode,
603	addr: entries[i].to, al: &al);
604	get_symoff(sym: al.sym, al: &al, print_off: true, bf, size: sizeof(bf));
605	pydict_set_item_string_decref(pyelem, "to",
606	_PyUnicode_FromString(bf));
607
608	get_br_mspred(flags: &entries[i].flags, bf, size: sizeof(bf));
609	pydict_set_item_string_decref(pyelem, "pred",
610	_PyUnicode_FromString(bf));
611
612	if (entries[i].flags.in_tx) {
613	pydict_set_item_string_decref(pyelem, "in_tx",
614	_PyUnicode_FromString("X"));
615	} else {
616	pydict_set_item_string_decref(pyelem, "in_tx",
617	_PyUnicode_FromString("-"));
618	}
619
620	if (entries[i].flags.abort) {
621	pydict_set_item_string_decref(pyelem, "abort",
622	_PyUnicode_FromString("A"));
623	} else {
624	pydict_set_item_string_decref(pyelem, "abort",
625	_PyUnicode_FromString("-"));
626	}
627
628	PyList_Append(pylist, pyelem);
629	Py_DECREF(pyelem);
630	addr_location__exit(&al);
631	}
632
633	exit:
634	return pylist;
635	}
636
637	static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
638	u64 read_format)
639	{
640	PyObject *t;
641
642	t = PyTuple_New(3);
643	if (!t)
644	Py_FatalError("couldn't create Python tuple");
645	PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
646	PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
647	if (read_format & PERF_FORMAT_LOST)
648	PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
649
650	return t;
651	}
652
653	static void set_sample_read_in_dict(PyObject *dict_sample,
654	struct perf_sample *sample,
655	struct evsel *evsel)
656	{
657	u64 read_format = evsel->core.attr.read_format;
658	PyObject *values;
659	unsigned int i;
660
661	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
662	pydict_set_item_string_decref(dict_sample, "time_enabled",
663	PyLong_FromUnsignedLongLong(sample->read.time_enabled));
664	}
665
666	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
667	pydict_set_item_string_decref(dict_sample, "time_running",
668	PyLong_FromUnsignedLongLong(sample->read.time_running));
669	}
670
671	if (read_format & PERF_FORMAT_GROUP)
672	values = PyList_New(sample->read.group.nr);
673	else
674	values = PyList_New(1);
675
676	if (!values)
677	Py_FatalError("couldn't create Python list");
678
679	if (read_format & PERF_FORMAT_GROUP) {
680	struct sample_read_value *v = sample->read.group.values;
681
682	i = 0;
683	sample_read_group__for_each(v, sample->read.group.nr, read_format) {
684	PyObject *t = get_sample_value_as_tuple(v, read_format);
685	PyList_SET_ITEM(values, i, t);
686	i++;
687	}
688	} else {
689	PyObject *t = get_sample_value_as_tuple(&sample->read.one,
690	read_format);
691	PyList_SET_ITEM(values, 0, t);
692	}
693	pydict_set_item_string_decref(dict_sample, "values", values);
694	}
695
696	static void set_sample_datasrc_in_dict(PyObject *dict,
697	struct perf_sample *sample)
698	{
699	struct mem_info *mi = mem_info__new();
700	char decode[100];
701
702	if (!mi)
703	Py_FatalError("couldn't create mem-info");
704
705	pydict_set_item_string_decref(dict, "datasrc",
706	PyLong_FromUnsignedLongLong(sample->data_src));
707
708	mem_info__data_src(mi)->val = sample->data_src;
709	perf_script__meminfo_scnprintf(bf: decode, size: 100, mem_info: mi);
710	mem_info__put(mi);
711
712	pydict_set_item_string_decref(dict, "datasrc_decode",
713	_PyUnicode_FromString(decode));
714	}
715
716	static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
717	{
718	unsigned int i = 0, r;
719	int printed = 0;
720
721	bf[0] = 0;
722
723	if (size <= 0)
724	return;
725
726	if (!regs || !regs->regs)
727	return;
728
729	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
730	u64 val = regs->regs[i++];
731
732	printed += scnprintf(bf + printed, size - printed,
733	"%5s:0x%" PRIx64 " ",
734	perf_reg_name(r, arch), val);
735	}
736	}
737
738	#define MAX_REG_SIZE 128
739
740	static int set_regs_in_dict(PyObject *dict,
741	struct perf_sample *sample,
742	struct evsel *evsel)
743	{
744	struct perf_event_attr *attr = &evsel->core.attr;
745	const char *arch = perf_env__arch(env: evsel__env(evsel));
746
747	int size = (__sw_hweight64(w: attr->sample_regs_intr) * MAX_REG_SIZE) + 1;
748	char *bf = NULL;
749
750	if (sample->intr_regs) {
751	bf = malloc(size);
752	if (!bf)
753	return -1;
754
755	regs_map(regs: sample->intr_regs, mask: attr->sample_regs_intr, arch, bf, size);
756
757	pydict_set_item_string_decref(dict, "iregs",
758	_PyUnicode_FromString(bf));
759	}
760
761	if (sample->user_regs) {
762	if (!bf) {
763	bf = malloc(size);
764	if (!bf)
765	return -1;
766	}
767	regs_map(regs: sample->user_regs, mask: attr->sample_regs_user, arch, bf, size);
768
769	pydict_set_item_string_decref(dict, "uregs",
770	_PyUnicode_FromString(bf));
771	}
772	free(bf);
773
774	return 0;
775	}
776
777	static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
778	const char *dso_field, const char *dso_bid_field,
779	const char *dso_map_start, const char *dso_map_end,
780	const char *sym_field, const char *symoff_field,
781	const char *map_pgoff)
782	{
783	if (al->map) {
784	char sbuild_id[SBUILD_ID_SIZE];
785	struct dso *dso = map__dso(al->map);
786
787	pydict_set_item_string_decref(dict, dso_field,
788	_PyUnicode_FromString(dso__name(dso)));
789	build_id__snprintf(build_id: dso__bid(dso), bf: sbuild_id, bf_size: sizeof(sbuild_id));
790	pydict_set_item_string_decref(dict, dso_bid_field,
791	_PyUnicode_FromString(sbuild_id));
792	pydict_set_item_string_decref(dict, dso_map_start,
793	PyLong_FromUnsignedLong(map__start(al->map)));
794	pydict_set_item_string_decref(dict, dso_map_end,
795	PyLong_FromUnsignedLong(map__end(al->map)));
796	pydict_set_item_string_decref(dict, map_pgoff,
797	PyLong_FromUnsignedLongLong(map__pgoff(al->map)));
798	}
799	if (al->sym) {
800	pydict_set_item_string_decref(dict, sym_field,
801	_PyUnicode_FromString(al->sym->name));
802	pydict_set_item_string_decref(dict, symoff_field,
803	PyLong_FromUnsignedLong(get_offset(sym: al->sym, al)));
804	}
805	}
806
807	static void set_sample_flags(PyObject *dict, u32 flags)
808	{
809	const char *ch = PERF_IP_FLAG_CHARS;
810	char *p, str[33];
811
812	for (p = str; *ch; ch++, flags >>= 1) {
813	if (flags & 1)
814	*p++ = *ch;
815	}
816	*p = 0;
817	pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
818	}
819
820	static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
821	{
822	char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
823
824	set_sample_flags(dict_sample, sample->flags);
825	perf_sample__sprintf_flags(flags: sample->flags, str: flags_disp, sz: sizeof(flags_disp));
826	pydict_set_item_string_decref(dict_sample, "flags_disp",
827	_PyUnicode_FromString(flags_disp));
828	}
829
830	static PyObject *get_perf_sample_dict(struct perf_sample *sample,
831	struct evsel *evsel,
832	struct addr_location *al,
833	struct addr_location *addr_al,
834	PyObject *callchain)
835	{
836	PyObject *dict, *dict_sample, *brstack, *brstacksym;
837
838	dict = PyDict_New();
839	if (!dict)
840	Py_FatalError("couldn't create Python dictionary");
841
842	dict_sample = PyDict_New();
843	if (!dict_sample)
844	Py_FatalError("couldn't create Python dictionary");
845
846	pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
847	pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
848
849	pydict_set_item_string_decref(dict_sample, "id",
850	PyLong_FromUnsignedLongLong(sample->id));
851	pydict_set_item_string_decref(dict_sample, "stream_id",
852	PyLong_FromUnsignedLongLong(sample->stream_id));
853	pydict_set_item_string_decref(dict_sample, "pid",
854	_PyLong_FromLong(sample->pid));
855	pydict_set_item_string_decref(dict_sample, "tid",
856	_PyLong_FromLong(sample->tid));
857	pydict_set_item_string_decref(dict_sample, "cpu",
858	_PyLong_FromLong(sample->cpu));
859	pydict_set_item_string_decref(dict_sample, "ip",
860	PyLong_FromUnsignedLongLong(sample->ip));
861	pydict_set_item_string_decref(dict_sample, "time",
862	PyLong_FromUnsignedLongLong(sample->time));
863	pydict_set_item_string_decref(dict_sample, "period",
864	PyLong_FromUnsignedLongLong(sample->period));
865	pydict_set_item_string_decref(dict_sample, "phys_addr",
866	PyLong_FromUnsignedLongLong(sample->phys_addr));
867	pydict_set_item_string_decref(dict_sample, "addr",
868	PyLong_FromUnsignedLongLong(sample->addr));
869	set_sample_read_in_dict(dict_sample, sample, evsel);
870	pydict_set_item_string_decref(dict_sample, "weight",
871	PyLong_FromUnsignedLongLong(sample->weight));
872	pydict_set_item_string_decref(dict_sample, "ins_lat",
873	PyLong_FromUnsignedLong(sample->ins_lat));
874	pydict_set_item_string_decref(dict_sample, "transaction",
875	PyLong_FromUnsignedLongLong(sample->transaction));
876	set_sample_datasrc_in_dict(dict_sample, sample);
877	pydict_set_item_string_decref(dict, "sample", dict_sample);
878
879	pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
880	(const char *)sample->raw_data, sample->raw_size));
881	pydict_set_item_string_decref(dict, "comm",
882	_PyUnicode_FromString(thread__comm_str(al->thread)));
883	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
884	"symbol", "symoff", "map_pgoff");
885
886	pydict_set_item_string_decref(dict, "callchain", callchain);
887
888	brstack = python_process_brstack(sample, al->thread);
889	pydict_set_item_string_decref(dict, "brstack", brstack);
890
891	brstacksym = python_process_brstacksym(sample, al->thread);
892	pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
893
894	if (sample->machine_pid) {
895	pydict_set_item_string_decref(dict_sample, "machine_pid",
896	_PyLong_FromLong(sample->machine_pid));
897	pydict_set_item_string_decref(dict_sample, "vcpu",
898	_PyLong_FromLong(sample->vcpu));
899	}
900
901	pydict_set_item_string_decref(dict_sample, "cpumode",
902	_PyLong_FromLong((unsigned long)sample->cpumode));
903
904	if (addr_al) {
905	pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
906	PyBool_FromLong(1));
907	set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
908	"addr_dso_map_start", "addr_dso_map_end",
909	"addr_symbol", "addr_symoff", "addr_map_pgoff");
910	}
911
912	if (sample->flags)
913	python_process_sample_flags(sample, dict_sample);
914
915	/* Instructions per cycle (IPC) */
916	if (sample->insn_cnt && sample->cyc_cnt) {
917	pydict_set_item_string_decref(dict_sample, "insn_cnt",
918	PyLong_FromUnsignedLongLong(sample->insn_cnt));
919	pydict_set_item_string_decref(dict_sample, "cyc_cnt",
920	PyLong_FromUnsignedLongLong(sample->cyc_cnt));
921	}
922
923	if (set_regs_in_dict(dict, sample, evsel))
924	Py_FatalError("Failed to setting regs in dict");
925
926	return dict;
927	}
928
929	#ifdef HAVE_LIBTRACEEVENT
930	static void python_process_tracepoint(struct perf_sample *sample,
931	struct evsel *evsel,
932	struct addr_location *al,
933	struct addr_location *addr_al)
934	{
935	struct tep_event *event;
936	PyObject *handler, *context, *t, *obj = NULL, *callchain;
937	PyObject *dict = NULL, *all_entries_dict = NULL;
938	static char handler_name[256];
939	struct tep_format_field *field;
940	unsigned long s, ns;
941	unsigned n = 0;
942	int pid;
943	int cpu = sample->cpu;
944	void *data = sample->raw_data;
945	unsigned long long nsecs = sample->time;
946	const char *comm = thread__comm_str(al->thread);
947	const char *default_handler_name = "trace_unhandled";
948	DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
949
950	bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
951
952	event = evsel__tp_format(evsel);
953	if (!event) {
954	snprintf(handler_name, sizeof(handler_name),
955	"ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
956	Py_FatalError(handler_name);
957	}
958
959	pid = raw_field_value(event, "common_pid", data);
960
961	sprintf(handler_name, "%s__%s", event->system, event->name);
962
963	if (!__test_and_set_bit(event->id, events_defined))
964	define_event_symbols(event, handler_name, event->print_fmt.args);
965
966	handler = get_handler(handler_name);
967	if (!handler) {
968	handler = get_handler(default_handler_name);
969	if (!handler)
970	return;
971	dict = PyDict_New();
972	if (!dict)
973	Py_FatalError("couldn't create Python dict");
974	}
975
976	t = PyTuple_New(MAX_FIELDS);
977	if (!t)
978	Py_FatalError("couldn't create Python tuple");
979
980
981	s = nsecs / NSEC_PER_SEC;
982	ns = nsecs - s * NSEC_PER_SEC;
983
984	context = _PyCapsule_New(scripting_context, NULL, NULL);
985
986	PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
987	PyTuple_SetItem(t, n++, context);
988
989	/* ip unwinding */
990	callchain = python_process_callchain(sample, evsel, al);
991	/* Need an additional reference for the perf_sample dict */
992	Py_INCREF(callchain);
993
994	if (!dict) {
995	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
996	PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
997	PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
998	PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
999	PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
1000	PyTuple_SetItem(t, n++, callchain);
1001	} else {
1002	pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
1003	pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
1004	pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
1005	pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
1006	pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
1007	pydict_set_item_string_decref(dict, "common_callchain", callchain);
1008	}
1009	for (field = event->format.fields; field; field = field->next) {
1010	unsigned int offset, len;
1011	unsigned long long val;
1012
1013	if (field->flags & TEP_FIELD_IS_ARRAY) {
1014	offset = field->offset;
1015	len = field->size;
1016	if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1017	val = tep_read_number(scripting_context->pevent,
1018	data + offset, len);
1019	offset = val;
1020	len = offset >> 16;
1021	offset &= 0xffff;
1022	if (tep_field_is_relative(field->flags))
1023	offset += field->offset + field->size;
1024	}
1025	if (field->flags & TEP_FIELD_IS_STRING &&
1026	is_printable_array(data + offset, len)) {
1027	obj = _PyUnicode_FromString((char *) data + offset);
1028	} else {
1029	obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1030	field->flags &= ~TEP_FIELD_IS_STRING;
1031	}
1032	} else { /* FIELD_IS_NUMERIC */
1033	obj = get_field_numeric_entry(event, field, data);
1034	}
1035	if (!dict)
1036	PyTuple_SetItem(t, n++, obj);
1037	else
1038	pydict_set_item_string_decref(dict, field->name, obj);
1039
1040	}
1041
1042	if (dict)
1043	PyTuple_SetItem(t, n++, dict);
1044
1045	if (get_argument_count(handler) == (int) n + 1) {
1046	all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1047	callchain);
1048	PyTuple_SetItem(t, n++, all_entries_dict);
1049	} else {
1050	Py_DECREF(callchain);
1051	}
1052
1053	if (_PyTuple_Resize(&t, n) == -1)
1054	Py_FatalError("error resizing Python tuple");
1055
1056	if (!dict)
1057	call_object(handler, t, handler_name);
1058	else
1059	call_object(handler, t, default_handler_name);
1060
1061	Py_DECREF(t);
1062	}
1063	#else
1064	static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1065	struct evsel *evsel __maybe_unused,
1066	struct addr_location *al __maybe_unused,
1067	struct addr_location *addr_al __maybe_unused)
1068	{
1069	fprintf(stderr, "Tracepoint events are not supported because "
1070	"perf is not linked with libtraceevent.\n");
1071	}
1072	#endif
1073
1074	static PyObject *tuple_new(unsigned int sz)
1075	{
1076	PyObject *t;
1077
1078	t = PyTuple_New(sz);
1079	if (!t)
1080	Py_FatalError("couldn't create Python tuple");
1081	return t;
1082	}
1083
1084	static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1085	{
1086	#if BITS_PER_LONG == 64
1087	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1088	#endif
1089	#if BITS_PER_LONG == 32
1090	return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1091	#endif
1092	}
1093
1094	/*
1095	* Databases support only signed 64-bit numbers, so even though we are
1096	* exporting a u64, it must be as s64.
1097	*/
1098	#define tuple_set_d64 tuple_set_s64
1099
1100	static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1101	{
1102	#if BITS_PER_LONG == 64
1103	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1104	#endif
1105	#if BITS_PER_LONG == 32
1106	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1107	#endif
1108	}
1109
1110	static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1111	{
1112	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1113	}
1114
1115	static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1116	{
1117	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1118	}
1119
1120	static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1121	{
1122	return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1123	}
1124
1125	static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1126	{
1127	return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1128	}
1129
1130	static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1131	unsigned int sz)
1132	{
1133	return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1134	}
1135
1136	static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1137	{
1138	struct tables *tables = container_of(dbe, struct tables, dbe);
1139	PyObject *t;
1140
1141	t = tuple_new(2);
1142
1143	tuple_set_d64(t, 0, evsel->db_id);
1144	tuple_set_string(t, 1, evsel__name(evsel));
1145
1146	call_object(tables->evsel_handler, t, "evsel_table");
1147
1148	Py_DECREF(t);
1149
1150	return 0;
1151	}
1152
1153	static int python_export_machine(struct db_export *dbe,
1154	struct machine *machine)
1155	{
1156	struct tables *tables = container_of(dbe, struct tables, dbe);
1157	PyObject *t;
1158
1159	t = tuple_new(3);
1160
1161	tuple_set_d64(t, 0, machine->db_id);
1162	tuple_set_s32(t, 1, machine->pid);
1163	tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1164
1165	call_object(tables->machine_handler, t, "machine_table");
1166
1167	Py_DECREF(t);
1168
1169	return 0;
1170	}
1171
1172	static int python_export_thread(struct db_export *dbe, struct thread *thread,
1173	u64 main_thread_db_id, struct machine *machine)
1174	{
1175	struct tables *tables = container_of(dbe, struct tables, dbe);
1176	PyObject *t;
1177
1178	t = tuple_new(5);
1179
1180	tuple_set_d64(t, 0, thread__db_id(thread));
1181	tuple_set_d64(t, 1, machine->db_id);
1182	tuple_set_d64(t, 2, main_thread_db_id);
1183	tuple_set_s32(t, 3, thread__pid(thread));
1184	tuple_set_s32(t, 4, thread__tid(thread));
1185
1186	call_object(tables->thread_handler, t, "thread_table");
1187
1188	Py_DECREF(t);
1189
1190	return 0;
1191	}
1192
1193	static int python_export_comm(struct db_export *dbe, struct comm *comm,
1194	struct thread *thread)
1195	{
1196	struct tables *tables = container_of(dbe, struct tables, dbe);
1197	PyObject *t;
1198
1199	t = tuple_new(5);
1200
1201	tuple_set_d64(t, 0, comm->db_id);
1202	tuple_set_string(t, 1, comm__str(comm));
1203	tuple_set_d64(t, 2, thread__db_id(thread));
1204	tuple_set_d64(t, 3, comm->start);
1205	tuple_set_s32(t, 4, comm->exec);
1206
1207	call_object(tables->comm_handler, t, "comm_table");
1208
1209	Py_DECREF(t);
1210
1211	return 0;
1212	}
1213
1214	static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1215	struct comm *comm, struct thread *thread)
1216	{
1217	struct tables *tables = container_of(dbe, struct tables, dbe);
1218	PyObject *t;
1219
1220	t = tuple_new(3);
1221
1222	tuple_set_d64(t, 0, db_id);
1223	tuple_set_d64(t, 1, comm->db_id);
1224	tuple_set_d64(t, 2, thread__db_id(thread));
1225
1226	call_object(tables->comm_thread_handler, t, "comm_thread_table");
1227
1228	Py_DECREF(t);
1229
1230	return 0;
1231	}
1232
1233	static int python_export_dso(struct db_export *dbe, struct dso *dso,
1234	struct machine *machine)
1235	{
1236	struct tables *tables = container_of(dbe, struct tables, dbe);
1237	char sbuild_id[SBUILD_ID_SIZE];
1238	PyObject *t;
1239
1240	build_id__snprintf(build_id: dso__bid(dso), bf: sbuild_id, bf_size: sizeof(sbuild_id));
1241
1242	t = tuple_new(5);
1243
1244	tuple_set_d64(t, 0, dso__db_id(dso));
1245	tuple_set_d64(t, 1, machine->db_id);
1246	tuple_set_string(t, 2, dso__short_name(dso));
1247	tuple_set_string(t, 3, dso__long_name(dso));
1248	tuple_set_string(t, 4, sbuild_id);
1249
1250	call_object(tables->dso_handler, t, "dso_table");
1251
1252	Py_DECREF(t);
1253
1254	return 0;
1255	}
1256
1257	static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1258	struct dso *dso)
1259	{
1260	struct tables *tables = container_of(dbe, struct tables, dbe);
1261	u64 *sym_db_id = symbol__priv(sym);
1262	PyObject *t;
1263
1264	t = tuple_new(6);
1265
1266	tuple_set_d64(t, 0, *sym_db_id);
1267	tuple_set_d64(t, 1, dso__db_id(dso));
1268	tuple_set_d64(t, 2, sym->start);
1269	tuple_set_d64(t, 3, sym->end);
1270	tuple_set_s32(t, 4, sym->binding);
1271	tuple_set_string(t, 5, sym->name);
1272
1273	call_object(tables->symbol_handler, t, "symbol_table");
1274
1275	Py_DECREF(t);
1276
1277	return 0;
1278	}
1279
1280	static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1281	const char *name)
1282	{
1283	struct tables *tables = container_of(dbe, struct tables, dbe);
1284	PyObject *t;
1285
1286	t = tuple_new(2);
1287
1288	tuple_set_s32(t, 0, branch_type);
1289	tuple_set_string(t, 1, name);
1290
1291	call_object(tables->branch_type_handler, t, "branch_type_table");
1292
1293	Py_DECREF(t);
1294
1295	return 0;
1296	}
1297
1298	static void python_export_sample_table(struct db_export *dbe,
1299	struct export_sample *es)
1300	{
1301	struct tables *tables = container_of(dbe, struct tables, dbe);
1302	PyObject *t;
1303
1304	t = tuple_new(28);
1305
1306	tuple_set_d64(t, 0, es->db_id);
1307	tuple_set_d64(t, 1, es->evsel->db_id);
1308	tuple_set_d64(t, 2, maps__machine(thread__maps(es->al->thread))->db_id);
1309	tuple_set_d64(t, 3, thread__db_id(es->al->thread));
1310	tuple_set_d64(t, 4, es->comm_db_id);
1311	tuple_set_d64(t, 5, es->dso_db_id);
1312	tuple_set_d64(t, 6, es->sym_db_id);
1313	tuple_set_d64(t, 7, es->offset);
1314	tuple_set_d64(t, 8, es->sample->ip);
1315	tuple_set_d64(t, 9, es->sample->time);
1316	tuple_set_s32(t, 10, es->sample->cpu);
1317	tuple_set_d64(t, 11, es->addr_dso_db_id);
1318	tuple_set_d64(t, 12, es->addr_sym_db_id);
1319	tuple_set_d64(t, 13, es->addr_offset);
1320	tuple_set_d64(t, 14, es->sample->addr);
1321	tuple_set_d64(t, 15, es->sample->period);
1322	tuple_set_d64(t, 16, es->sample->weight);
1323	tuple_set_d64(t, 17, es->sample->transaction);
1324	tuple_set_d64(t, 18, es->sample->data_src);
1325	tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1326	tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1327	tuple_set_d64(t, 21, es->call_path_id);
1328	tuple_set_d64(t, 22, es->sample->insn_cnt);
1329	tuple_set_d64(t, 23, es->sample->cyc_cnt);
1330	tuple_set_s32(t, 24, es->sample->flags);
1331	tuple_set_d64(t, 25, es->sample->id);
1332	tuple_set_d64(t, 26, es->sample->stream_id);
1333	tuple_set_u32(t, 27, es->sample->ins_lat);
1334
1335	call_object(tables->sample_handler, t, "sample_table");
1336
1337	Py_DECREF(t);
1338	}
1339
1340	static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1341	{
1342	struct tables *tables = container_of(dbe, struct tables, dbe);
1343	PyObject *t;
1344
1345	t = tuple_new(3);
1346
1347	tuple_set_d64(t, 0, es->db_id);
1348	tuple_set_d64(t, 1, es->evsel->core.attr.config);
1349	tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1350
1351	call_object(tables->synth_handler, t, "synth_data");
1352
1353	Py_DECREF(t);
1354	}
1355
1356	static int python_export_sample(struct db_export *dbe,
1357	struct export_sample *es)
1358	{
1359	struct tables *tables = container_of(dbe, struct tables, dbe);
1360
1361	python_export_sample_table(dbe, es);
1362
1363	if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1364	python_export_synth(dbe, es);
1365
1366	return 0;
1367	}
1368
1369	static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1370	{
1371	struct tables *tables = container_of(dbe, struct tables, dbe);
1372	PyObject *t;
1373	u64 parent_db_id, sym_db_id;
1374
1375	parent_db_id = cp->parent ? cp->parent->db_id : 0;
1376	sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1377
1378	t = tuple_new(4);
1379
1380	tuple_set_d64(t, 0, cp->db_id);
1381	tuple_set_d64(t, 1, parent_db_id);
1382	tuple_set_d64(t, 2, sym_db_id);
1383	tuple_set_d64(t, 3, cp->ip);
1384
1385	call_object(tables->call_path_handler, t, "call_path_table");
1386
1387	Py_DECREF(t);
1388
1389	return 0;
1390	}
1391
1392	static int python_export_call_return(struct db_export *dbe,
1393	struct call_return *cr)
1394	{
1395	struct tables *tables = container_of(dbe, struct tables, dbe);
1396	u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1397	PyObject *t;
1398
1399	t = tuple_new(14);
1400
1401	tuple_set_d64(t, 0, cr->db_id);
1402	tuple_set_d64(t, 1, thread__db_id(cr->thread));
1403	tuple_set_d64(t, 2, comm_db_id);
1404	tuple_set_d64(t, 3, cr->cp->db_id);
1405	tuple_set_d64(t, 4, cr->call_time);
1406	tuple_set_d64(t, 5, cr->return_time);
1407	tuple_set_d64(t, 6, cr->branch_count);
1408	tuple_set_d64(t, 7, cr->call_ref);
1409	tuple_set_d64(t, 8, cr->return_ref);
1410	tuple_set_d64(t, 9, cr->cp->parent->db_id);
1411	tuple_set_s32(t, 10, cr->flags);
1412	tuple_set_d64(t, 11, cr->parent_db_id);
1413	tuple_set_d64(t, 12, cr->insn_count);
1414	tuple_set_d64(t, 13, cr->cyc_count);
1415
1416	call_object(tables->call_return_handler, t, "call_return_table");
1417
1418	Py_DECREF(t);
1419
1420	return 0;
1421	}
1422
1423	static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1424	struct machine *machine,
1425	struct perf_sample *sample,
1426	u64 th_out_id, u64 comm_out_id,
1427	u64 th_in_id, u64 comm_in_id, int flags)
1428	{
1429	struct tables *tables = container_of(dbe, struct tables, dbe);
1430	PyObject *t;
1431
1432	t = tuple_new(9);
1433
1434	tuple_set_d64(t, 0, db_id);
1435	tuple_set_d64(t, 1, machine->db_id);
1436	tuple_set_d64(t, 2, sample->time);
1437	tuple_set_s32(t, 3, sample->cpu);
1438	tuple_set_d64(t, 4, th_out_id);
1439	tuple_set_d64(t, 5, comm_out_id);
1440	tuple_set_d64(t, 6, th_in_id);
1441	tuple_set_d64(t, 7, comm_in_id);
1442	tuple_set_s32(t, 8, flags);
1443
1444	call_object(tables->context_switch_handler, t, "context_switch");
1445
1446	Py_DECREF(t);
1447
1448	return 0;
1449	}
1450
1451	static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1452	void *data)
1453	{
1454	struct db_export *dbe = data;
1455
1456	return db_export__call_return(dbe, cr, parent_db_id);
1457	}
1458
1459	static void python_process_general_event(struct perf_sample *sample,
1460	struct evsel *evsel,
1461	struct addr_location *al,
1462	struct addr_location *addr_al)
1463	{
1464	PyObject *handler, *t, *dict, *callchain;
1465	static char handler_name[64];
1466	unsigned n = 0;
1467
1468	snprintf(buf: handler_name, size: sizeof(handler_name), fmt: "%s", "process_event");
1469
1470	handler = get_handler(handler_name);
1471	if (!handler)
1472	return;
1473
1474	/*
1475	* Use the MAX_FIELDS to make the function expandable, though
1476	* currently there is only one item for the tuple.
1477	*/
1478	t = PyTuple_New(MAX_FIELDS);
1479	if (!t)
1480	Py_FatalError("couldn't create Python tuple");
1481
1482	/* ip unwinding */
1483	callchain = python_process_callchain(sample, evsel, al);
1484	dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1485
1486	PyTuple_SetItem(t, n++, dict);
1487	if (_PyTuple_Resize(&t, n) == -1)
1488	Py_FatalError("error resizing Python tuple");
1489
1490	call_object(handler, t, handler_name);
1491
1492	Py_DECREF(t);
1493	}
1494
1495	static void python_process_event(union perf_event *event,
1496	struct perf_sample *sample,
1497	struct evsel *evsel,
1498	struct addr_location *al,
1499	struct addr_location *addr_al)
1500	{
1501	struct tables *tables = &tables_global;
1502
1503	scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1504
1505	switch (evsel->core.attr.type) {
1506	case PERF_TYPE_TRACEPOINT:
1507	python_process_tracepoint(sample, evsel, al, addr_al);
1508	break;
1509	/* Reserve for future process_hw/sw/raw APIs */
1510	default:
1511	if (tables->db_export_mode)
1512	db_export__sample(dbe: &tables->dbe, event, sample, evsel, al, addr_al);
1513	else
1514	python_process_general_event(sample, evsel, al, addr_al);
1515	}
1516	}
1517
1518	static void python_process_throttle(union perf_event *event,
1519	struct perf_sample *sample,
1520	struct machine *machine)
1521	{
1522	const char *handler_name;
1523	PyObject *handler, *t;
1524
1525	if (event->header.type == PERF_RECORD_THROTTLE)
1526	handler_name = "throttle";
1527	else
1528	handler_name = "unthrottle";
1529	handler = get_handler(handler_name);
1530	if (!handler)
1531	return;
1532
1533	t = tuple_new(6);
1534	if (!t)
1535	return;
1536
1537	tuple_set_u64(t, 0, event->throttle.time);
1538	tuple_set_u64(t, 1, event->throttle.id);
1539	tuple_set_u64(t, 2, event->throttle.stream_id);
1540	tuple_set_s32(t, 3, sample->cpu);
1541	tuple_set_s32(t, 4, sample->pid);
1542	tuple_set_s32(t, 5, sample->tid);
1543
1544	call_object(handler, t, handler_name);
1545
1546	Py_DECREF(t);
1547	}
1548
1549	static void python_do_process_switch(union perf_event *event,
1550	struct perf_sample *sample,
1551	struct machine *machine)
1552	{
1553	const char *handler_name = "context_switch";
1554	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1555	bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1556	pid_t np_pid = -1, np_tid = -1;
1557	PyObject *handler, *t;
1558
1559	handler = get_handler(handler_name);
1560	if (!handler)
1561	return;
1562
1563	if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1564	np_pid = event->context_switch.next_prev_pid;
1565	np_tid = event->context_switch.next_prev_tid;
1566	}
1567
1568	t = tuple_new(11);
1569	if (!t)
1570	return;
1571
1572	tuple_set_u64(t, 0, sample->time);
1573	tuple_set_s32(t, 1, sample->cpu);
1574	tuple_set_s32(t, 2, sample->pid);
1575	tuple_set_s32(t, 3, sample->tid);
1576	tuple_set_s32(t, 4, np_pid);
1577	tuple_set_s32(t, 5, np_tid);
1578	tuple_set_s32(t, 6, machine->pid);
1579	tuple_set_bool(t, 7, out);
1580	tuple_set_bool(t, 8, out_preempt);
1581	tuple_set_s32(t, 9, sample->machine_pid);
1582	tuple_set_s32(t, 10, sample->vcpu);
1583
1584	call_object(handler, t, handler_name);
1585
1586	Py_DECREF(t);
1587	}
1588
1589	static void python_process_switch(union perf_event *event,
1590	struct perf_sample *sample,
1591	struct machine *machine)
1592	{
1593	struct tables *tables = &tables_global;
1594
1595	if (tables->db_export_mode)
1596	db_export__switch(dbe: &tables->dbe, event, sample, machine);
1597	else
1598	python_do_process_switch(event, sample, machine);
1599	}
1600
1601	static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1602	union perf_event *event)
1603	{
1604	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1605	u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1606	const char *handler_name = "auxtrace_error";
1607	unsigned long long tm = e->time;
1608	const char *msg = e->msg;
1609	PyObject *handler, *t;
1610
1611	handler = get_handler(handler_name);
1612	if (!handler)
1613	return;
1614
1615	if (!e->fmt) {
1616	tm = 0;
1617	msg = (const char *)&e->time;
1618	}
1619
1620	t = tuple_new(11);
1621
1622	tuple_set_u32(t, 0, e->type);
1623	tuple_set_u32(t, 1, e->code);
1624	tuple_set_s32(t, 2, e->cpu);
1625	tuple_set_s32(t, 3, e->pid);
1626	tuple_set_s32(t, 4, e->tid);
1627	tuple_set_u64(t, 5, e->ip);
1628	tuple_set_u64(t, 6, tm);
1629	tuple_set_string(t, 7, msg);
1630	tuple_set_u32(t, 8, cpumode);
1631	tuple_set_s32(t, 9, e->machine_pid);
1632	tuple_set_s32(t, 10, e->vcpu);
1633
1634	call_object(handler, t, handler_name);
1635
1636	Py_DECREF(t);
1637	}
1638
1639	static void get_handler_name(char *str, size_t size,
1640	struct evsel *evsel)
1641	{
1642	char *p = str;
1643
1644	scnprintf(buf: str, size, fmt: "stat__%s", evsel__name(evsel));
1645
1646	while ((p = strchr(p, ':'))) {
1647	*p = '_';
1648	p++;
1649	}
1650	}
1651
1652	static void
1653	process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1654	struct perf_counts_values *count)
1655	{
1656	PyObject *handler, *t;
1657	static char handler_name[256];
1658	int n = 0;
1659
1660	t = PyTuple_New(MAX_FIELDS);
1661	if (!t)
1662	Py_FatalError("couldn't create Python tuple");
1663
1664	get_handler_name(str: handler_name, size: sizeof(handler_name),
1665	evsel: counter);
1666
1667	handler = get_handler(handler_name);
1668	if (!handler) {
1669	pr_debug("can't find python handler %s\n", handler_name);
1670	return;
1671	}
1672
1673	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1674	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1675
1676	tuple_set_u64(t, n++, tstamp);
1677	tuple_set_u64(t, n++, count->val);
1678	tuple_set_u64(t, n++, count->ena);
1679	tuple_set_u64(t, n++, count->run);
1680
1681	if (_PyTuple_Resize(&t, n) == -1)
1682	Py_FatalError("error resizing Python tuple");
1683
1684	call_object(handler, t, handler_name);
1685
1686	Py_DECREF(t);
1687	}
1688
1689	static void python_process_stat(struct perf_stat_config *config,
1690	struct evsel *counter, u64 tstamp)
1691	{
1692	struct perf_thread_map *threads = counter->core.threads;
1693	struct perf_cpu_map *cpus = counter->core.cpus;
1694
1695	for (int thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1696	int idx;
1697	struct perf_cpu cpu;
1698
1699	perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
1700	process_stat(counter, cpu: cpu,
1701	thread: perf_thread_map__pid(threads, thread), tstamp,
1702	count: perf_counts(counts: counter->counts, cpu_map_idx: idx, thread));
1703	}
1704	}
1705	}
1706
1707	static void python_process_stat_interval(u64 tstamp)
1708	{
1709	PyObject *handler, *t;
1710	static const char handler_name[] = "stat__interval";
1711	int n = 0;
1712
1713	t = PyTuple_New(MAX_FIELDS);
1714	if (!t)
1715	Py_FatalError("couldn't create Python tuple");
1716
1717	handler = get_handler(handler_name);
1718	if (!handler) {
1719	pr_debug("can't find python handler %s\n", handler_name);
1720	return;
1721	}
1722
1723	tuple_set_u64(t, n++, tstamp);
1724
1725	if (_PyTuple_Resize(&t, n) == -1)
1726	Py_FatalError("error resizing Python tuple");
1727
1728	call_object(handler, t, handler_name);
1729
1730	Py_DECREF(t);
1731	}
1732
1733	static int perf_script_context_init(void)
1734	{
1735	PyObject *perf_script_context;
1736	PyObject *perf_trace_context;
1737	PyObject *dict;
1738	int ret;
1739
1740	perf_trace_context = PyImport_AddModule("perf_trace_context");
1741	if (!perf_trace_context)
1742	return -1;
1743	dict = PyModule_GetDict(perf_trace_context);
1744	if (!dict)
1745	return -1;
1746
1747	perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1748	if (!perf_script_context)
1749	return -1;
1750
1751	ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1752	if (!ret)
1753	ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1754	Py_DECREF(perf_script_context);
1755	return ret;
1756	}
1757
1758	static int run_start_sub(void)
1759	{
1760	main_module = PyImport_AddModule("__main__");
1761	if (main_module == NULL)
1762	return -1;
1763	Py_INCREF(main_module);
1764
1765	main_dict = PyModule_GetDict(main_module);
1766	if (main_dict == NULL)
1767	goto error;
1768	Py_INCREF(main_dict);
1769
1770	if (perf_script_context_init())
1771	goto error;
1772
1773	try_call_object("trace_begin", NULL);
1774
1775	return 0;
1776
1777	error:
1778	Py_XDECREF(main_dict);
1779	Py_XDECREF(main_module);
1780	return -1;
1781	}
1782
1783	#define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
1784	tables->handler_name = get_handler(#table_name); \
1785	if (tables->handler_name) \
1786	tables->dbe.export_ ## name = python_export_ ## name; \
1787	} while (0)
1788
1789	#define SET_TABLE_HANDLER(name) \
1790	SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1791
1792	static void set_table_handlers(struct tables *tables)
1793	{
1794	const char *perf_db_export_mode = "perf_db_export_mode";
1795	const char *perf_db_export_calls = "perf_db_export_calls";
1796	const char *perf_db_export_callchains = "perf_db_export_callchains";
1797	PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1798	bool export_calls = false;
1799	bool export_callchains = false;
1800	int ret;
1801
1802	memset(tables, 0, sizeof(struct tables));
1803	if (db_export__init(dbe: &tables->dbe))
1804	Py_FatalError("failed to initialize export");
1805
1806	db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1807	if (!db_export_mode)
1808	return;
1809
1810	ret = PyObject_IsTrue(db_export_mode);
1811	if (ret == -1)
1812	handler_call_die(handler_name: perf_db_export_mode);
1813	if (!ret)
1814	return;
1815
1816	/* handle export calls */
1817	tables->dbe.crp = NULL;
1818	db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1819	if (db_export_calls) {
1820	ret = PyObject_IsTrue(db_export_calls);
1821	if (ret == -1)
1822	handler_call_die(handler_name: perf_db_export_calls);
1823	export_calls = !!ret;
1824	}
1825
1826	if (export_calls) {
1827	tables->dbe.crp =
1828	call_return_processor__new(process: python_process_call_return,
1829	data: &tables->dbe);
1830	if (!tables->dbe.crp)
1831	Py_FatalError("failed to create calls processor");
1832	}
1833
1834	/* handle export callchains */
1835	tables->dbe.cpr = NULL;
1836	db_export_callchains = PyDict_GetItemString(main_dict,
1837	perf_db_export_callchains);
1838	if (db_export_callchains) {
1839	ret = PyObject_IsTrue(db_export_callchains);
1840	if (ret == -1)
1841	handler_call_die(handler_name: perf_db_export_callchains);
1842	export_callchains = !!ret;
1843	}
1844
1845	if (export_callchains) {
1846	/*
1847	* Attempt to use the call path root from the call return
1848	* processor, if the call return processor is in use. Otherwise,
1849	* we allocate a new call path root. This prevents exporting
1850	* duplicate call path ids when both are in use simultaneously.
1851	*/
1852	if (tables->dbe.crp)
1853	tables->dbe.cpr = tables->dbe.crp->cpr;
1854	else
1855	tables->dbe.cpr = call_path_root__new();
1856
1857	if (!tables->dbe.cpr)
1858	Py_FatalError("failed to create call path root");
1859	}
1860
1861	tables->db_export_mode = true;
1862	/*
1863	* Reserve per symbol space for symbol->db_id via symbol__priv()
1864	*/
1865	symbol_conf.priv_size = sizeof(u64);
1866
1867	SET_TABLE_HANDLER(evsel);
1868	SET_TABLE_HANDLER(machine);
1869	SET_TABLE_HANDLER(thread);
1870	SET_TABLE_HANDLER(comm);
1871	SET_TABLE_HANDLER(comm_thread);
1872	SET_TABLE_HANDLER(dso);
1873	SET_TABLE_HANDLER(symbol);
1874	SET_TABLE_HANDLER(branch_type);
1875	SET_TABLE_HANDLER(sample);
1876	SET_TABLE_HANDLER(call_path);
1877	SET_TABLE_HANDLER(call_return);
1878	SET_TABLE_HANDLER(context_switch);
1879
1880	/*
1881	* Synthesized events are samples but with architecture-specific data
1882	* stored in sample->raw_data. They are exported via
1883	* python_export_sample() and consequently do not need a separate export
1884	* callback.
1885	*/
1886	tables->synth_handler = get_handler("synth_data");
1887	}
1888
1889	static void _free_command_line(wchar_t **command_line, int num)
1890	{
1891	int i;
1892	for (i = 0; i < num; i++)
1893	PyMem_RawFree(command_line[i]);
1894	free(command_line);
1895	}
1896
1897
1898	/*
1899	* Start trace script
1900	*/
1901	static int python_start_script(const char *script, int argc, const char **argv,
1902	struct perf_session *session)
1903	{
1904	struct tables *tables = &tables_global;
1905	wchar_t **command_line;
1906	char buf[PATH_MAX];
1907	int i, err = 0;
1908	FILE *fp;
1909
1910	scripting_context->session = session;
1911	command_line = malloc((argc + 1) * sizeof(wchar_t *));
1912	if (!command_line)
1913	return -1;
1914
1915	command_line[0] = Py_DecodeLocale(script, NULL);
1916	for (i = 1; i < argc + 1; i++)
1917	command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1918	PyImport_AppendInittab("perf_trace_context", PyInit_perf_trace_context);
1919	Py_Initialize();
1920
1921	PySys_SetArgv(argc + 1, command_line);
1922
1923	fp = fopen(script, "r");
1924	if (!fp) {
1925	sprintf(buf, fmt: "Can't open python script \"%s\"", script);
1926	perror(buf);
1927	err = -1;
1928	goto error;
1929	}
1930
1931	err = PyRun_SimpleFile(fp, script);
1932	if (err) {
1933	fprintf(stderr, "Error running python script %s\n", script);
1934	goto error;
1935	}
1936
1937	err = run_start_sub();
1938	if (err) {
1939	fprintf(stderr, "Error starting python script %s\n", script);
1940	goto error;
1941	}
1942
1943	set_table_handlers(tables);
1944
1945	if (tables->db_export_mode) {
1946	err = db_export__branch_types(dbe: &tables->dbe);
1947	if (err)
1948	goto error;
1949	}
1950
1951	_free_command_line(command_line, argc + 1);
1952
1953	return err;
1954	error:
1955	Py_Finalize();
1956	_free_command_line(command_line, argc + 1);
1957
1958	return err;
1959	}
1960
1961	static int python_flush_script(void)
1962	{
1963	return 0;
1964	}
1965
1966	/*
1967	* Stop trace script
1968	*/
1969	static int python_stop_script(void)
1970	{
1971	struct tables *tables = &tables_global;
1972
1973	try_call_object("trace_end", NULL);
1974
1975	db_export__exit(dbe: &tables->dbe);
1976
1977	Py_XDECREF(main_dict);
1978	Py_XDECREF(main_module);
1979	Py_Finalize();
1980
1981	return 0;
1982	}
1983
1984	#ifdef HAVE_LIBTRACEEVENT
1985	static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1986	{
1987	int i, not_first, count, nr_events;
1988	struct tep_event **all_events;
1989	struct tep_event *event = NULL;
1990	struct tep_format_field *f;
1991	char fname[PATH_MAX];
1992	FILE *ofp;
1993
1994	sprintf(fname, "%s.py", outfile);
1995	ofp = fopen(fname, "w");
1996	if (ofp == NULL) {
1997	fprintf(stderr, "couldn't open %s\n", fname);
1998	return -1;
1999	}
2000	fprintf(ofp, "# perf script event handlers, "
2001	"generated by perf script -g python\n");
2002
2003	fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2004	" License version 2\n\n");
2005
2006	fprintf(ofp, "# The common_* event handler fields are the most useful "
2007	"fields common to\n");
2008
2009	fprintf(ofp, "# all events. They don't necessarily correspond to "
2010	"the 'common_*' fields\n");
2011
2012	fprintf(ofp, "# in the format files. Those fields not available as "
2013	"handler params can\n");
2014
2015	fprintf(ofp, "# be retrieved using Python functions of the form "
2016	"common_*(context).\n");
2017
2018	fprintf(ofp, "# See the perf-script-python Documentation for the list "
2019	"of available functions.\n\n");
2020
2021	fprintf(ofp, "from __future__ import print_function\n\n");
2022	fprintf(ofp, "import os\n");
2023	fprintf(ofp, "import sys\n\n");
2024
2025	fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2026	fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2027	fprintf(ofp, "\nfrom perf_trace_context import *\n");
2028	fprintf(ofp, "from Core import *\n\n\n");
2029
2030	fprintf(ofp, "def trace_begin():\n");
2031	fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2032
2033	fprintf(ofp, "def trace_end():\n");
2034	fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2035
2036	nr_events = tep_get_events_count(pevent);
2037	all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2038
2039	for (i = 0; all_events && i < nr_events; i++) {
2040	event = all_events[i];
2041	fprintf(ofp, "def %s__%s(", event->system, event->name);
2042	fprintf(ofp, "event_name, ");
2043	fprintf(ofp, "context, ");
2044	fprintf(ofp, "common_cpu,\n");
2045	fprintf(ofp, "\tcommon_secs, ");
2046	fprintf(ofp, "common_nsecs, ");
2047	fprintf(ofp, "common_pid, ");
2048	fprintf(ofp, "common_comm,\n\t");
2049	fprintf(ofp, "common_callchain, ");
2050
2051	not_first = 0;
2052	count = 0;
2053
2054	for (f = event->format.fields; f; f = f->next) {
2055	if (not_first++)
2056	fprintf(ofp, ", ");
2057	if (++count % 5 == 0)
2058	fprintf(ofp, "\n\t");
2059
2060	fprintf(ofp, "%s", f->name);
2061	}
2062	if (not_first++)
2063	fprintf(ofp, ", ");
2064	if (++count % 5 == 0)
2065	fprintf(ofp, "\n\t\t");
2066	fprintf(ofp, "perf_sample_dict");
2067
2068	fprintf(ofp, "):\n");
2069
2070	fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2071	"common_secs, common_nsecs,\n\t\t\t"
2072	"common_pid, common_comm)\n\n");
2073
2074	fprintf(ofp, "\t\tprint(\"");
2075
2076	not_first = 0;
2077	count = 0;
2078
2079	for (f = event->format.fields; f; f = f->next) {
2080	if (not_first++)
2081	fprintf(ofp, ", ");
2082	if (count && count % 3 == 0) {
2083	fprintf(ofp, "\" \\\n\t\t\"");
2084	}
2085	count++;
2086
2087	fprintf(ofp, "%s=", f->name);
2088	if (f->flags & TEP_FIELD_IS_STRING ||
2089	f->flags & TEP_FIELD_IS_FLAG ||
2090	f->flags & TEP_FIELD_IS_ARRAY ||
2091	f->flags & TEP_FIELD_IS_SYMBOLIC)
2092	fprintf(ofp, "%%s");
2093	else if (f->flags & TEP_FIELD_IS_SIGNED)
2094	fprintf(ofp, "%%d");
2095	else
2096	fprintf(ofp, "%%u");
2097	}
2098
2099	fprintf(ofp, "\" %% \\\n\t\t(");
2100
2101	not_first = 0;
2102	count = 0;
2103
2104	for (f = event->format.fields; f; f = f->next) {
2105	if (not_first++)
2106	fprintf(ofp, ", ");
2107
2108	if (++count % 5 == 0)
2109	fprintf(ofp, "\n\t\t");
2110
2111	if (f->flags & TEP_FIELD_IS_FLAG) {
2112	if ((count - 1) % 5 != 0) {
2113	fprintf(ofp, "\n\t\t");
2114	count = 4;
2115	}
2116	fprintf(ofp, "flag_str(\"");
2117	fprintf(ofp, "%s__%s\", ", event->system,
2118	event->name);
2119	fprintf(ofp, "\"%s\", %s)", f->name,
2120	f->name);
2121	} else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2122	if ((count - 1) % 5 != 0) {
2123	fprintf(ofp, "\n\t\t");
2124	count = 4;
2125	}
2126	fprintf(ofp, "symbol_str(\"");
2127	fprintf(ofp, "%s__%s\", ", event->system,
2128	event->name);
2129	fprintf(ofp, "\"%s\", %s)", f->name,
2130	f->name);
2131	} else
2132	fprintf(ofp, "%s", f->name);
2133	}
2134
2135	fprintf(ofp, "))\n\n");
2136
2137	fprintf(ofp, "\t\tprint('Sample: {'+"
2138	"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2139
2140	fprintf(ofp, "\t\tfor node in common_callchain:");
2141	fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2142	fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2143	fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2144	fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2145	fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso']) if 'dso' in node else \"\",");
2146	fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2147	fprintf(ofp, "\n\t\t\telse:");
2148	fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2149	fprintf(ofp, "\t\tprint()\n\n");
2150
2151	}
2152
2153	fprintf(ofp, "def trace_unhandled(event_name, context, "
2154	"event_fields_dict, perf_sample_dict):\n");
2155
2156	fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2157	fprintf(ofp, "\t\tprint('Sample: {'+"
2158	"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2159
2160	fprintf(ofp, "def print_header("
2161	"event_name, cpu, secs, nsecs, pid, comm):\n"
2162	"\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2163	"(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2164
2165	fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2166	"\treturn delimiter.join"
2167	"(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2168
2169	fclose(ofp);
2170
2171	fprintf(stderr, "generated Python script: %s\n", fname);
2172
2173	return 0;
2174	}
2175	#else
2176	static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2177	const char *outfile __maybe_unused)
2178	{
2179	fprintf(stderr, "Generating Python perf-script is not supported."
2180	" Install libtraceevent and rebuild perf to enable it.\n"
2181	"For example:\n # apt install libtraceevent-dev (ubuntu)"
2182	"\n # yum install libtraceevent-devel (Fedora)"
2183	"\n etc.\n");
2184	return -1;
2185	}
2186	#endif
2187
2188	struct scripting_ops python_scripting_ops = {
2189	.name = "Python",
2190	.dirname = "python",
2191	.start_script = python_start_script,
2192	.flush_script = python_flush_script,
2193	.stop_script = python_stop_script,
2194	.process_event = python_process_event,
2195	.process_switch = python_process_switch,
2196	.process_auxtrace_error = python_process_auxtrace_error,
2197	.process_stat = python_process_stat,
2198	.process_stat_interval = python_process_stat_interval,
2199	.process_throttle = python_process_throttle,
2200	.generate_script = python_generate_script,
2201	};
2202