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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 <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <stdbool.h>
28#include <errno.h>
29#include <linux/bitmap.h>
30#include <linux/time64.h>
31
32#include "../../perf.h"
33#include "../debug.h"
34#include "../callchain.h"
35#include "../evsel.h"
36#include "../util.h"
37#include "../event.h"
38#include "../thread.h"
39#include "../comm.h"
40#include "../machine.h"
41#include "../db-export.h"
42#include "../thread-stack.h"
43#include "../trace-event.h"
44#include "../machine.h"
45#include "../call-path.h"
46#include "thread_map.h"
47#include "cpumap.h"
48#include "stat.h"
49
50PyMODINIT_FUNC initperf_trace_context(void);
51
52#define TRACE_EVENT_TYPE_MAX \
53 ((1 << (sizeof(unsigned short) * 8)) - 1)
54
55static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
56
57#define MAX_FIELDS 64
58#define N_COMMON_FIELDS 7
59
60extern struct scripting_context *scripting_context;
61
62static char *cur_field_name;
63static int zero_flag_atom;
64
65static PyObject *main_module, *main_dict;
66
67struct tables {
68 struct db_export dbe;
69 PyObject *evsel_handler;
70 PyObject *machine_handler;
71 PyObject *thread_handler;
72 PyObject *comm_handler;
73 PyObject *comm_thread_handler;
74 PyObject *dso_handler;
75 PyObject *symbol_handler;
76 PyObject *branch_type_handler;
77 PyObject *sample_handler;
78 PyObject *call_path_handler;
79 PyObject *call_return_handler;
80 bool db_export_mode;
81};
82
83static struct tables tables_global;
84
85static void handler_call_die(const char *handler_name) NORETURN;
86static void handler_call_die(const char *handler_name)
87{
88 PyErr_Print();
89 Py_FatalError("problem in Python trace event handler");
90 // Py_FatalError does not return
91 // but we have to make the compiler happy
92 abort();
93}
94
95/*
96 * Insert val into into the dictionary and decrement the reference counter.
97 * This is necessary for dictionaries since PyDict_SetItemString() does not
98 * steal a reference, as opposed to PyTuple_SetItem().
99 */
100static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
101{
102 PyDict_SetItemString(dict, key, val);
103 Py_DECREF(val);
104}
105
106static PyObject *get_handler(const char *handler_name)
107{
108 PyObject *handler;
109
110 handler = PyDict_GetItemString(main_dict, handler_name);
111 if (handler && !PyCallable_Check(handler))
112 return NULL;
113 return handler;
114}
115
116static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
117{
118 PyObject *retval;
119
120 retval = PyObject_CallObject(handler, args);
121 if (retval == NULL)
122 handler_call_die(die_msg);
123 Py_DECREF(retval);
124}
125
126static void try_call_object(const char *handler_name, PyObject *args)
127{
128 PyObject *handler;
129
130 handler = get_handler(handler_name);
131 if (handler)
132 call_object(handler, args, handler_name);
133}
134
135static void define_value(enum print_arg_type field_type,
136 const char *ev_name,
137 const char *field_name,
138 const char *field_value,
139 const char *field_str)
140{
141 const char *handler_name = "define_flag_value";
142 PyObject *t;
143 unsigned long long value;
144 unsigned n = 0;
145
146 if (field_type == PRINT_SYMBOL)
147 handler_name = "define_symbolic_value";
148
149 t = PyTuple_New(4);
150 if (!t)
151 Py_FatalError("couldn't create Python tuple");
152
153 value = eval_flag(field_value);
154
155 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
156 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
157 PyTuple_SetItem(t, n++, PyInt_FromLong(value));
158 PyTuple_SetItem(t, n++, PyString_FromString(field_str));
159
160 try_call_object(handler_name, t);
161
162 Py_DECREF(t);
163}
164
165static void define_values(enum print_arg_type field_type,
166 struct print_flag_sym *field,
167 const char *ev_name,
168 const char *field_name)
169{
170 define_value(field_type, ev_name, field_name, field->value,
171 field->str);
172
173 if (field->next)
174 define_values(field_type, field->next, ev_name, field_name);
175}
176
177static void define_field(enum print_arg_type field_type,
178 const char *ev_name,
179 const char *field_name,
180 const char *delim)
181{
182 const char *handler_name = "define_flag_field";
183 PyObject *t;
184 unsigned n = 0;
185
186 if (field_type == PRINT_SYMBOL)
187 handler_name = "define_symbolic_field";
188
189 if (field_type == PRINT_FLAGS)
190 t = PyTuple_New(3);
191 else
192 t = PyTuple_New(2);
193 if (!t)
194 Py_FatalError("couldn't create Python tuple");
195
196 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
197 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
198 if (field_type == PRINT_FLAGS)
199 PyTuple_SetItem(t, n++, PyString_FromString(delim));
200
201 try_call_object(handler_name, t);
202
203 Py_DECREF(t);
204}
205
206static void define_event_symbols(struct event_format *event,
207 const char *ev_name,
208 struct print_arg *args)
209{
210 if (args == NULL)
211 return;
212
213 switch (args->type) {
214 case PRINT_NULL:
215 break;
216 case PRINT_ATOM:
217 define_value(PRINT_FLAGS, ev_name, cur_field_name, "0",
218 args->atom.atom);
219 zero_flag_atom = 0;
220 break;
221 case PRINT_FIELD:
222 free(cur_field_name);
223 cur_field_name = strdup(args->field.name);
224 break;
225 case PRINT_FLAGS:
226 define_event_symbols(event, ev_name, args->flags.field);
227 define_field(PRINT_FLAGS, ev_name, cur_field_name,
228 args->flags.delim);
229 define_values(PRINT_FLAGS, args->flags.flags, ev_name,
230 cur_field_name);
231 break;
232 case PRINT_SYMBOL:
233 define_event_symbols(event, ev_name, args->symbol.field);
234 define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL);
235 define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
236 cur_field_name);
237 break;
238 case PRINT_HEX:
239 define_event_symbols(event, ev_name, args->hex.field);
240 define_event_symbols(event, ev_name, args->hex.size);
241 break;
242 case PRINT_INT_ARRAY:
243 define_event_symbols(event, ev_name, args->int_array.field);
244 define_event_symbols(event, ev_name, args->int_array.count);
245 define_event_symbols(event, ev_name, args->int_array.el_size);
246 break;
247 case PRINT_STRING:
248 break;
249 case PRINT_TYPE:
250 define_event_symbols(event, ev_name, args->typecast.item);
251 break;
252 case PRINT_OP:
253 if (strcmp(args->op.op, ":") == 0)
254 zero_flag_atom = 1;
255 define_event_symbols(event, ev_name, args->op.left);
256 define_event_symbols(event, ev_name, args->op.right);
257 break;
258 default:
259 /* gcc warns for these? */
260 case PRINT_BSTRING:
261 case PRINT_DYNAMIC_ARRAY:
262 case PRINT_DYNAMIC_ARRAY_LEN:
263 case PRINT_FUNC:
264 case PRINT_BITMASK:
265 /* we should warn... */
266 return;
267 }
268
269 if (args->next)
270 define_event_symbols(event, ev_name, args->next);
271}
272
273static PyObject *get_field_numeric_entry(struct event_format *event,
274 struct format_field *field, void *data)
275{
276 bool is_array = field->flags & FIELD_IS_ARRAY;
277 PyObject *obj = NULL, *list = NULL;
278 unsigned long long val;
279 unsigned int item_size, n_items, i;
280
281 if (is_array) {
282 list = PyList_New(field->arraylen);
283 item_size = field->size / field->arraylen;
284 n_items = field->arraylen;
285 } else {
286 item_size = field->size;
287 n_items = 1;
288 }
289
290 for (i = 0; i < n_items; i++) {
291
292 val = read_size(event, data + field->offset + i * item_size,
293 item_size);
294 if (field->flags & FIELD_IS_SIGNED) {
295 if ((long long)val >= LONG_MIN &&
296 (long long)val <= LONG_MAX)
297 obj = PyInt_FromLong(val);
298 else
299 obj = PyLong_FromLongLong(val);
300 } else {
301 if (val <= LONG_MAX)
302 obj = PyInt_FromLong(val);
303 else
304 obj = PyLong_FromUnsignedLongLong(val);
305 }
306 if (is_array)
307 PyList_SET_ITEM(list, i, obj);
308 }
309 if (is_array)
310 obj = list;
311 return obj;
312}
313
314
315static PyObject *python_process_callchain(struct perf_sample *sample,
316 struct perf_evsel *evsel,
317 struct addr_location *al)
318{
319 PyObject *pylist;
320
321 pylist = PyList_New(0);
322 if (!pylist)
323 Py_FatalError("couldn't create Python list");
324
325 if (!symbol_conf.use_callchain || !sample->callchain)
326 goto exit;
327
328 if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
329 sample, NULL, NULL,
330 scripting_max_stack) != 0) {
331 pr_err("Failed to resolve callchain. Skipping\n");
332 goto exit;
333 }
334 callchain_cursor_commit(&callchain_cursor);
335
336
337 while (1) {
338 PyObject *pyelem;
339 struct callchain_cursor_node *node;
340 node = callchain_cursor_current(&callchain_cursor);
341 if (!node)
342 break;
343
344 pyelem = PyDict_New();
345 if (!pyelem)
346 Py_FatalError("couldn't create Python dictionary");
347
348
349 pydict_set_item_string_decref(pyelem, "ip",
350 PyLong_FromUnsignedLongLong(node->ip));
351
352 if (node->sym) {
353 PyObject *pysym = PyDict_New();
354 if (!pysym)
355 Py_FatalError("couldn't create Python dictionary");
356 pydict_set_item_string_decref(pysym, "start",
357 PyLong_FromUnsignedLongLong(node->sym->start));
358 pydict_set_item_string_decref(pysym, "end",
359 PyLong_FromUnsignedLongLong(node->sym->end));
360 pydict_set_item_string_decref(pysym, "binding",
361 PyInt_FromLong(node->sym->binding));
362 pydict_set_item_string_decref(pysym, "name",
363 PyString_FromStringAndSize(node->sym->name,
364 node->sym->namelen));
365 pydict_set_item_string_decref(pyelem, "sym", pysym);
366 }
367
368 if (node->map) {
369 struct map *map = node->map;
370 const char *dsoname = "[unknown]";
371 if (map && map->dso && (map->dso->name || map->dso->long_name)) {
372 if (symbol_conf.show_kernel_path && map->dso->long_name)
373 dsoname = map->dso->long_name;
374 else if (map->dso->name)
375 dsoname = map->dso->name;
376 }
377 pydict_set_item_string_decref(pyelem, "dso",
378 PyString_FromString(dsoname));
379 }
380
381 callchain_cursor_advance(&callchain_cursor);
382 PyList_Append(pylist, pyelem);
383 Py_DECREF(pyelem);
384 }
385
386exit:
387 return pylist;
388}
389
390static void python_process_tracepoint(struct perf_sample *sample,
391 struct perf_evsel *evsel,
392 struct addr_location *al)
393{
394 struct event_format *event = evsel->tp_format;
395 PyObject *handler, *context, *t, *obj = NULL, *callchain;
396 PyObject *dict = NULL;
397 static char handler_name[256];
398 struct format_field *field;
399 unsigned long s, ns;
400 unsigned n = 0;
401 int pid;
402 int cpu = sample->cpu;
403 void *data = sample->raw_data;
404 unsigned long long nsecs = sample->time;
405 const char *comm = thread__comm_str(al->thread);
406
407 t = PyTuple_New(MAX_FIELDS);
408 if (!t)
409 Py_FatalError("couldn't create Python tuple");
410
411 if (!event) {
412 snprintf(handler_name, sizeof(handler_name),
413 "ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
414 Py_FatalError(handler_name);
415 }
416
417 pid = raw_field_value(event, "common_pid", data);
418
419 sprintf(handler_name, "%s__%s", event->system, event->name);
420
421 if (!test_and_set_bit(event->id, events_defined))
422 define_event_symbols(event, handler_name, event->print_fmt.args);
423
424 handler = get_handler(handler_name);
425 if (!handler) {
426 dict = PyDict_New();
427 if (!dict)
428 Py_FatalError("couldn't create Python dict");
429 }
430 s = nsecs / NSEC_PER_SEC;
431 ns = nsecs - s * NSEC_PER_SEC;
432
433 scripting_context->event_data = data;
434 scripting_context->pevent = evsel->tp_format->pevent;
435
436 context = PyCObject_FromVoidPtr(scripting_context, NULL);
437
438 PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
439 PyTuple_SetItem(t, n++, context);
440
441 /* ip unwinding */
442 callchain = python_process_callchain(sample, evsel, al);
443
444 if (handler) {
445 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
446 PyTuple_SetItem(t, n++, PyInt_FromLong(s));
447 PyTuple_SetItem(t, n++, PyInt_FromLong(ns));
448 PyTuple_SetItem(t, n++, PyInt_FromLong(pid));
449 PyTuple_SetItem(t, n++, PyString_FromString(comm));
450 PyTuple_SetItem(t, n++, callchain);
451 } else {
452 pydict_set_item_string_decref(dict, "common_cpu", PyInt_FromLong(cpu));
453 pydict_set_item_string_decref(dict, "common_s", PyInt_FromLong(s));
454 pydict_set_item_string_decref(dict, "common_ns", PyInt_FromLong(ns));
455 pydict_set_item_string_decref(dict, "common_pid", PyInt_FromLong(pid));
456 pydict_set_item_string_decref(dict, "common_comm", PyString_FromString(comm));
457 pydict_set_item_string_decref(dict, "common_callchain", callchain);
458 }
459 for (field = event->format.fields; field; field = field->next) {
460 unsigned int offset, len;
461 unsigned long long val;
462
463 if (field->flags & FIELD_IS_ARRAY) {
464 offset = field->offset;
465 len = field->size;
466 if (field->flags & FIELD_IS_DYNAMIC) {
467 val = pevent_read_number(scripting_context->pevent,
468 data + offset, len);
469 offset = val;
470 len = offset >> 16;
471 offset &= 0xffff;
472 }
473 if (field->flags & FIELD_IS_STRING &&
474 is_printable_array(data + offset, len)) {
475 obj = PyString_FromString((char *) data + offset);
476 } else {
477 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
478 field->flags &= ~FIELD_IS_STRING;
479 }
480 } else { /* FIELD_IS_NUMERIC */
481 obj = get_field_numeric_entry(event, field, data);
482 }
483 if (handler)
484 PyTuple_SetItem(t, n++, obj);
485 else
486 pydict_set_item_string_decref(dict, field->name, obj);
487
488 }
489
490 if (!handler)
491 PyTuple_SetItem(t, n++, dict);
492
493 if (_PyTuple_Resize(&t, n) == -1)
494 Py_FatalError("error resizing Python tuple");
495
496 if (handler) {
497 call_object(handler, t, handler_name);
498 } else {
499 try_call_object("trace_unhandled", t);
500 Py_DECREF(dict);
501 }
502
503 Py_DECREF(t);
504}
505
506static PyObject *tuple_new(unsigned int sz)
507{
508 PyObject *t;
509
510 t = PyTuple_New(sz);
511 if (!t)
512 Py_FatalError("couldn't create Python tuple");
513 return t;
514}
515
516static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
517{
518#if BITS_PER_LONG == 64
519 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
520#endif
521#if BITS_PER_LONG == 32
522 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
523#endif
524}
525
526static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
527{
528 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
529}
530
531static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
532{
533 return PyTuple_SetItem(t, pos, PyString_FromString(s));
534}
535
536static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
537{
538 struct tables *tables = container_of(dbe, struct tables, dbe);
539 PyObject *t;
540
541 t = tuple_new(2);
542
543 tuple_set_u64(t, 0, evsel->db_id);
544 tuple_set_string(t, 1, perf_evsel__name(evsel));
545
546 call_object(tables->evsel_handler, t, "evsel_table");
547
548 Py_DECREF(t);
549
550 return 0;
551}
552
553static int python_export_machine(struct db_export *dbe,
554 struct machine *machine)
555{
556 struct tables *tables = container_of(dbe, struct tables, dbe);
557 PyObject *t;
558
559 t = tuple_new(3);
560
561 tuple_set_u64(t, 0, machine->db_id);
562 tuple_set_s32(t, 1, machine->pid);
563 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
564
565 call_object(tables->machine_handler, t, "machine_table");
566
567 Py_DECREF(t);
568
569 return 0;
570}
571
572static int python_export_thread(struct db_export *dbe, struct thread *thread,
573 u64 main_thread_db_id, struct machine *machine)
574{
575 struct tables *tables = container_of(dbe, struct tables, dbe);
576 PyObject *t;
577
578 t = tuple_new(5);
579
580 tuple_set_u64(t, 0, thread->db_id);
581 tuple_set_u64(t, 1, machine->db_id);
582 tuple_set_u64(t, 2, main_thread_db_id);
583 tuple_set_s32(t, 3, thread->pid_);
584 tuple_set_s32(t, 4, thread->tid);
585
586 call_object(tables->thread_handler, t, "thread_table");
587
588 Py_DECREF(t);
589
590 return 0;
591}
592
593static int python_export_comm(struct db_export *dbe, struct comm *comm)
594{
595 struct tables *tables = container_of(dbe, struct tables, dbe);
596 PyObject *t;
597
598 t = tuple_new(2);
599
600 tuple_set_u64(t, 0, comm->db_id);
601 tuple_set_string(t, 1, comm__str(comm));
602
603 call_object(tables->comm_handler, t, "comm_table");
604
605 Py_DECREF(t);
606
607 return 0;
608}
609
610static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
611 struct comm *comm, struct thread *thread)
612{
613 struct tables *tables = container_of(dbe, struct tables, dbe);
614 PyObject *t;
615
616 t = tuple_new(3);
617
618 tuple_set_u64(t, 0, db_id);
619 tuple_set_u64(t, 1, comm->db_id);
620 tuple_set_u64(t, 2, thread->db_id);
621
622 call_object(tables->comm_thread_handler, t, "comm_thread_table");
623
624 Py_DECREF(t);
625
626 return 0;
627}
628
629static int python_export_dso(struct db_export *dbe, struct dso *dso,
630 struct machine *machine)
631{
632 struct tables *tables = container_of(dbe, struct tables, dbe);
633 char sbuild_id[SBUILD_ID_SIZE];
634 PyObject *t;
635
636 build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
637
638 t = tuple_new(5);
639
640 tuple_set_u64(t, 0, dso->db_id);
641 tuple_set_u64(t, 1, machine->db_id);
642 tuple_set_string(t, 2, dso->short_name);
643 tuple_set_string(t, 3, dso->long_name);
644 tuple_set_string(t, 4, sbuild_id);
645
646 call_object(tables->dso_handler, t, "dso_table");
647
648 Py_DECREF(t);
649
650 return 0;
651}
652
653static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
654 struct dso *dso)
655{
656 struct tables *tables = container_of(dbe, struct tables, dbe);
657 u64 *sym_db_id = symbol__priv(sym);
658 PyObject *t;
659
660 t = tuple_new(6);
661
662 tuple_set_u64(t, 0, *sym_db_id);
663 tuple_set_u64(t, 1, dso->db_id);
664 tuple_set_u64(t, 2, sym->start);
665 tuple_set_u64(t, 3, sym->end);
666 tuple_set_s32(t, 4, sym->binding);
667 tuple_set_string(t, 5, sym->name);
668
669 call_object(tables->symbol_handler, t, "symbol_table");
670
671 Py_DECREF(t);
672
673 return 0;
674}
675
676static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
677 const char *name)
678{
679 struct tables *tables = container_of(dbe, struct tables, dbe);
680 PyObject *t;
681
682 t = tuple_new(2);
683
684 tuple_set_s32(t, 0, branch_type);
685 tuple_set_string(t, 1, name);
686
687 call_object(tables->branch_type_handler, t, "branch_type_table");
688
689 Py_DECREF(t);
690
691 return 0;
692}
693
694static int python_export_sample(struct db_export *dbe,
695 struct export_sample *es)
696{
697 struct tables *tables = container_of(dbe, struct tables, dbe);
698 PyObject *t;
699
700 t = tuple_new(22);
701
702 tuple_set_u64(t, 0, es->db_id);
703 tuple_set_u64(t, 1, es->evsel->db_id);
704 tuple_set_u64(t, 2, es->al->machine->db_id);
705 tuple_set_u64(t, 3, es->al->thread->db_id);
706 tuple_set_u64(t, 4, es->comm_db_id);
707 tuple_set_u64(t, 5, es->dso_db_id);
708 tuple_set_u64(t, 6, es->sym_db_id);
709 tuple_set_u64(t, 7, es->offset);
710 tuple_set_u64(t, 8, es->sample->ip);
711 tuple_set_u64(t, 9, es->sample->time);
712 tuple_set_s32(t, 10, es->sample->cpu);
713 tuple_set_u64(t, 11, es->addr_dso_db_id);
714 tuple_set_u64(t, 12, es->addr_sym_db_id);
715 tuple_set_u64(t, 13, es->addr_offset);
716 tuple_set_u64(t, 14, es->sample->addr);
717 tuple_set_u64(t, 15, es->sample->period);
718 tuple_set_u64(t, 16, es->sample->weight);
719 tuple_set_u64(t, 17, es->sample->transaction);
720 tuple_set_u64(t, 18, es->sample->data_src);
721 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
722 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
723 tuple_set_u64(t, 21, es->call_path_id);
724
725 call_object(tables->sample_handler, t, "sample_table");
726
727 Py_DECREF(t);
728
729 return 0;
730}
731
732static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
733{
734 struct tables *tables = container_of(dbe, struct tables, dbe);
735 PyObject *t;
736 u64 parent_db_id, sym_db_id;
737
738 parent_db_id = cp->parent ? cp->parent->db_id : 0;
739 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
740
741 t = tuple_new(4);
742
743 tuple_set_u64(t, 0, cp->db_id);
744 tuple_set_u64(t, 1, parent_db_id);
745 tuple_set_u64(t, 2, sym_db_id);
746 tuple_set_u64(t, 3, cp->ip);
747
748 call_object(tables->call_path_handler, t, "call_path_table");
749
750 Py_DECREF(t);
751
752 return 0;
753}
754
755static int python_export_call_return(struct db_export *dbe,
756 struct call_return *cr)
757{
758 struct tables *tables = container_of(dbe, struct tables, dbe);
759 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
760 PyObject *t;
761
762 t = tuple_new(11);
763
764 tuple_set_u64(t, 0, cr->db_id);
765 tuple_set_u64(t, 1, cr->thread->db_id);
766 tuple_set_u64(t, 2, comm_db_id);
767 tuple_set_u64(t, 3, cr->cp->db_id);
768 tuple_set_u64(t, 4, cr->call_time);
769 tuple_set_u64(t, 5, cr->return_time);
770 tuple_set_u64(t, 6, cr->branch_count);
771 tuple_set_u64(t, 7, cr->call_ref);
772 tuple_set_u64(t, 8, cr->return_ref);
773 tuple_set_u64(t, 9, cr->cp->parent->db_id);
774 tuple_set_s32(t, 10, cr->flags);
775
776 call_object(tables->call_return_handler, t, "call_return_table");
777
778 Py_DECREF(t);
779
780 return 0;
781}
782
783static int python_process_call_return(struct call_return *cr, void *data)
784{
785 struct db_export *dbe = data;
786
787 return db_export__call_return(dbe, cr);
788}
789
790static void python_process_general_event(struct perf_sample *sample,
791 struct perf_evsel *evsel,
792 struct addr_location *al)
793{
794 PyObject *handler, *t, *dict, *callchain, *dict_sample;
795 static char handler_name[64];
796 unsigned n = 0;
797
798 /*
799 * Use the MAX_FIELDS to make the function expandable, though
800 * currently there is only one item for the tuple.
801 */
802 t = PyTuple_New(MAX_FIELDS);
803 if (!t)
804 Py_FatalError("couldn't create Python tuple");
805
806 dict = PyDict_New();
807 if (!dict)
808 Py_FatalError("couldn't create Python dictionary");
809
810 dict_sample = PyDict_New();
811 if (!dict_sample)
812 Py_FatalError("couldn't create Python dictionary");
813
814 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
815
816 handler = get_handler(handler_name);
817 if (!handler)
818 goto exit;
819
820 pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
821 pydict_set_item_string_decref(dict, "attr", PyString_FromStringAndSize(
822 (const char *)&evsel->attr, sizeof(evsel->attr)));
823
824 pydict_set_item_string_decref(dict_sample, "pid",
825 PyInt_FromLong(sample->pid));
826 pydict_set_item_string_decref(dict_sample, "tid",
827 PyInt_FromLong(sample->tid));
828 pydict_set_item_string_decref(dict_sample, "cpu",
829 PyInt_FromLong(sample->cpu));
830 pydict_set_item_string_decref(dict_sample, "ip",
831 PyLong_FromUnsignedLongLong(sample->ip));
832 pydict_set_item_string_decref(dict_sample, "time",
833 PyLong_FromUnsignedLongLong(sample->time));
834 pydict_set_item_string_decref(dict_sample, "period",
835 PyLong_FromUnsignedLongLong(sample->period));
836 pydict_set_item_string_decref(dict, "sample", dict_sample);
837
838 pydict_set_item_string_decref(dict, "raw_buf", PyString_FromStringAndSize(
839 (const char *)sample->raw_data, sample->raw_size));
840 pydict_set_item_string_decref(dict, "comm",
841 PyString_FromString(thread__comm_str(al->thread)));
842 if (al->map) {
843 pydict_set_item_string_decref(dict, "dso",
844 PyString_FromString(al->map->dso->name));
845 }
846 if (al->sym) {
847 pydict_set_item_string_decref(dict, "symbol",
848 PyString_FromString(al->sym->name));
849 }
850
851 /* ip unwinding */
852 callchain = python_process_callchain(sample, evsel, al);
853 pydict_set_item_string_decref(dict, "callchain", callchain);
854
855 PyTuple_SetItem(t, n++, dict);
856 if (_PyTuple_Resize(&t, n) == -1)
857 Py_FatalError("error resizing Python tuple");
858
859 call_object(handler, t, handler_name);
860exit:
861 Py_DECREF(dict);
862 Py_DECREF(t);
863}
864
865static void python_process_event(union perf_event *event,
866 struct perf_sample *sample,
867 struct perf_evsel *evsel,
868 struct addr_location *al)
869{
870 struct tables *tables = &tables_global;
871
872 switch (evsel->attr.type) {
873 case PERF_TYPE_TRACEPOINT:
874 python_process_tracepoint(sample, evsel, al);
875 break;
876 /* Reserve for future process_hw/sw/raw APIs */
877 default:
878 if (tables->db_export_mode)
879 db_export__sample(&tables->dbe, event, sample, evsel, al);
880 else
881 python_process_general_event(sample, evsel, al);
882 }
883}
884
885static void get_handler_name(char *str, size_t size,
886 struct perf_evsel *evsel)
887{
888 char *p = str;
889
890 scnprintf(str, size, "stat__%s", perf_evsel__name(evsel));
891
892 while ((p = strchr(p, ':'))) {
893 *p = '_';
894 p++;
895 }
896}
897
898static void
899process_stat(struct perf_evsel *counter, int cpu, int thread, u64 tstamp,
900 struct perf_counts_values *count)
901{
902 PyObject *handler, *t;
903 static char handler_name[256];
904 int n = 0;
905
906 t = PyTuple_New(MAX_FIELDS);
907 if (!t)
908 Py_FatalError("couldn't create Python tuple");
909
910 get_handler_name(handler_name, sizeof(handler_name),
911 counter);
912
913 handler = get_handler(handler_name);
914 if (!handler) {
915 pr_debug("can't find python handler %s\n", handler_name);
916 return;
917 }
918
919 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
920 PyTuple_SetItem(t, n++, PyInt_FromLong(thread));
921
922 tuple_set_u64(t, n++, tstamp);
923 tuple_set_u64(t, n++, count->val);
924 tuple_set_u64(t, n++, count->ena);
925 tuple_set_u64(t, n++, count->run);
926
927 if (_PyTuple_Resize(&t, n) == -1)
928 Py_FatalError("error resizing Python tuple");
929
930 call_object(handler, t, handler_name);
931
932 Py_DECREF(t);
933}
934
935static void python_process_stat(struct perf_stat_config *config,
936 struct perf_evsel *counter, u64 tstamp)
937{
938 struct thread_map *threads = counter->threads;
939 struct cpu_map *cpus = counter->cpus;
940 int cpu, thread;
941
942 if (config->aggr_mode == AGGR_GLOBAL) {
943 process_stat(counter, -1, -1, tstamp,
944 &counter->counts->aggr);
945 return;
946 }
947
948 for (thread = 0; thread < threads->nr; thread++) {
949 for (cpu = 0; cpu < cpus->nr; cpu++) {
950 process_stat(counter, cpus->map[cpu],
951 thread_map__pid(threads, thread), tstamp,
952 perf_counts(counter->counts, cpu, thread));
953 }
954 }
955}
956
957static void python_process_stat_interval(u64 tstamp)
958{
959 PyObject *handler, *t;
960 static const char handler_name[] = "stat__interval";
961 int n = 0;
962
963 t = PyTuple_New(MAX_FIELDS);
964 if (!t)
965 Py_FatalError("couldn't create Python tuple");
966
967 handler = get_handler(handler_name);
968 if (!handler) {
969 pr_debug("can't find python handler %s\n", handler_name);
970 return;
971 }
972
973 tuple_set_u64(t, n++, tstamp);
974
975 if (_PyTuple_Resize(&t, n) == -1)
976 Py_FatalError("error resizing Python tuple");
977
978 call_object(handler, t, handler_name);
979
980 Py_DECREF(t);
981}
982
983static int run_start_sub(void)
984{
985 main_module = PyImport_AddModule("__main__");
986 if (main_module == NULL)
987 return -1;
988 Py_INCREF(main_module);
989
990 main_dict = PyModule_GetDict(main_module);
991 if (main_dict == NULL)
992 goto error;
993 Py_INCREF(main_dict);
994
995 try_call_object("trace_begin", NULL);
996
997 return 0;
998
999error:
1000 Py_XDECREF(main_dict);
1001 Py_XDECREF(main_module);
1002 return -1;
1003}
1004
1005#define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
1006 tables->handler_name = get_handler(#table_name); \
1007 if (tables->handler_name) \
1008 tables->dbe.export_ ## name = python_export_ ## name; \
1009} while (0)
1010
1011#define SET_TABLE_HANDLER(name) \
1012 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1013
1014static void set_table_handlers(struct tables *tables)
1015{
1016 const char *perf_db_export_mode = "perf_db_export_mode";
1017 const char *perf_db_export_calls = "perf_db_export_calls";
1018 const char *perf_db_export_callchains = "perf_db_export_callchains";
1019 PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1020 bool export_calls = false;
1021 bool export_callchains = false;
1022 int ret;
1023
1024 memset(tables, 0, sizeof(struct tables));
1025 if (db_export__init(&tables->dbe))
1026 Py_FatalError("failed to initialize export");
1027
1028 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1029 if (!db_export_mode)
1030 return;
1031
1032 ret = PyObject_IsTrue(db_export_mode);
1033 if (ret == -1)
1034 handler_call_die(perf_db_export_mode);
1035 if (!ret)
1036 return;
1037
1038 /* handle export calls */
1039 tables->dbe.crp = NULL;
1040 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1041 if (db_export_calls) {
1042 ret = PyObject_IsTrue(db_export_calls);
1043 if (ret == -1)
1044 handler_call_die(perf_db_export_calls);
1045 export_calls = !!ret;
1046 }
1047
1048 if (export_calls) {
1049 tables->dbe.crp =
1050 call_return_processor__new(python_process_call_return,
1051 &tables->dbe);
1052 if (!tables->dbe.crp)
1053 Py_FatalError("failed to create calls processor");
1054 }
1055
1056 /* handle export callchains */
1057 tables->dbe.cpr = NULL;
1058 db_export_callchains = PyDict_GetItemString(main_dict,
1059 perf_db_export_callchains);
1060 if (db_export_callchains) {
1061 ret = PyObject_IsTrue(db_export_callchains);
1062 if (ret == -1)
1063 handler_call_die(perf_db_export_callchains);
1064 export_callchains = !!ret;
1065 }
1066
1067 if (export_callchains) {
1068 /*
1069 * Attempt to use the call path root from the call return
1070 * processor, if the call return processor is in use. Otherwise,
1071 * we allocate a new call path root. This prevents exporting
1072 * duplicate call path ids when both are in use simultaniously.
1073 */
1074 if (tables->dbe.crp)
1075 tables->dbe.cpr = tables->dbe.crp->cpr;
1076 else
1077 tables->dbe.cpr = call_path_root__new();
1078
1079 if (!tables->dbe.cpr)
1080 Py_FatalError("failed to create call path root");
1081 }
1082
1083 tables->db_export_mode = true;
1084 /*
1085 * Reserve per symbol space for symbol->db_id via symbol__priv()
1086 */
1087 symbol_conf.priv_size = sizeof(u64);
1088
1089 SET_TABLE_HANDLER(evsel);
1090 SET_TABLE_HANDLER(machine);
1091 SET_TABLE_HANDLER(thread);
1092 SET_TABLE_HANDLER(comm);
1093 SET_TABLE_HANDLER(comm_thread);
1094 SET_TABLE_HANDLER(dso);
1095 SET_TABLE_HANDLER(symbol);
1096 SET_TABLE_HANDLER(branch_type);
1097 SET_TABLE_HANDLER(sample);
1098 SET_TABLE_HANDLER(call_path);
1099 SET_TABLE_HANDLER(call_return);
1100}
1101
1102/*
1103 * Start trace script
1104 */
1105static int python_start_script(const char *script, int argc, const char **argv)
1106{
1107 struct tables *tables = &tables_global;
1108 const char **command_line;
1109 char buf[PATH_MAX];
1110 int i, err = 0;
1111 FILE *fp;
1112
1113 command_line = malloc((argc + 1) * sizeof(const char *));
1114 command_line[0] = script;
1115 for (i = 1; i < argc + 1; i++)
1116 command_line[i] = argv[i - 1];
1117
1118 Py_Initialize();
1119
1120 initperf_trace_context();
1121
1122 PySys_SetArgv(argc + 1, (char **)command_line);
1123
1124 fp = fopen(script, "r");
1125 if (!fp) {
1126 sprintf(buf, "Can't open python script \"%s\"", script);
1127 perror(buf);
1128 err = -1;
1129 goto error;
1130 }
1131
1132 err = PyRun_SimpleFile(fp, script);
1133 if (err) {
1134 fprintf(stderr, "Error running python script %s\n", script);
1135 goto error;
1136 }
1137
1138 err = run_start_sub();
1139 if (err) {
1140 fprintf(stderr, "Error starting python script %s\n", script);
1141 goto error;
1142 }
1143
1144 set_table_handlers(tables);
1145
1146 if (tables->db_export_mode) {
1147 err = db_export__branch_types(&tables->dbe);
1148 if (err)
1149 goto error;
1150 }
1151
1152 free(command_line);
1153
1154 return err;
1155error:
1156 Py_Finalize();
1157 free(command_line);
1158
1159 return err;
1160}
1161
1162static int python_flush_script(void)
1163{
1164 struct tables *tables = &tables_global;
1165
1166 return db_export__flush(&tables->dbe);
1167}
1168
1169/*
1170 * Stop trace script
1171 */
1172static int python_stop_script(void)
1173{
1174 struct tables *tables = &tables_global;
1175
1176 try_call_object("trace_end", NULL);
1177
1178 db_export__exit(&tables->dbe);
1179
1180 Py_XDECREF(main_dict);
1181 Py_XDECREF(main_module);
1182 Py_Finalize();
1183
1184 return 0;
1185}
1186
1187static int python_generate_script(struct pevent *pevent, const char *outfile)
1188{
1189 struct event_format *event = NULL;
1190 struct format_field *f;
1191 char fname[PATH_MAX];
1192 int not_first, count;
1193 FILE *ofp;
1194
1195 sprintf(fname, "%s.py", outfile);
1196 ofp = fopen(fname, "w");
1197 if (ofp == NULL) {
1198 fprintf(stderr, "couldn't open %s\n", fname);
1199 return -1;
1200 }
1201 fprintf(ofp, "# perf script event handlers, "
1202 "generated by perf script -g python\n");
1203
1204 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1205 " License version 2\n\n");
1206
1207 fprintf(ofp, "# The common_* event handler fields are the most useful "
1208 "fields common to\n");
1209
1210 fprintf(ofp, "# all events. They don't necessarily correspond to "
1211 "the 'common_*' fields\n");
1212
1213 fprintf(ofp, "# in the format files. Those fields not available as "
1214 "handler params can\n");
1215
1216 fprintf(ofp, "# be retrieved using Python functions of the form "
1217 "common_*(context).\n");
1218
1219 fprintf(ofp, "# See the perf-trace-python Documentation for the list "
1220 "of available functions.\n\n");
1221
1222 fprintf(ofp, "import os\n");
1223 fprintf(ofp, "import sys\n\n");
1224
1225 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1226 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1227 fprintf(ofp, "\nfrom perf_trace_context import *\n");
1228 fprintf(ofp, "from Core import *\n\n\n");
1229
1230 fprintf(ofp, "def trace_begin():\n");
1231 fprintf(ofp, "\tprint \"in trace_begin\"\n\n");
1232
1233 fprintf(ofp, "def trace_end():\n");
1234 fprintf(ofp, "\tprint \"in trace_end\"\n\n");
1235
1236 while ((event = trace_find_next_event(pevent, event))) {
1237 fprintf(ofp, "def %s__%s(", event->system, event->name);
1238 fprintf(ofp, "event_name, ");
1239 fprintf(ofp, "context, ");
1240 fprintf(ofp, "common_cpu,\n");
1241 fprintf(ofp, "\tcommon_secs, ");
1242 fprintf(ofp, "common_nsecs, ");
1243 fprintf(ofp, "common_pid, ");
1244 fprintf(ofp, "common_comm,\n\t");
1245 fprintf(ofp, "common_callchain, ");
1246
1247 not_first = 0;
1248 count = 0;
1249
1250 for (f = event->format.fields; f; f = f->next) {
1251 if (not_first++)
1252 fprintf(ofp, ", ");
1253 if (++count % 5 == 0)
1254 fprintf(ofp, "\n\t");
1255
1256 fprintf(ofp, "%s", f->name);
1257 }
1258 fprintf(ofp, "):\n");
1259
1260 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1261 "common_secs, common_nsecs,\n\t\t\t"
1262 "common_pid, common_comm)\n\n");
1263
1264 fprintf(ofp, "\t\tprint \"");
1265
1266 not_first = 0;
1267 count = 0;
1268
1269 for (f = event->format.fields; f; f = f->next) {
1270 if (not_first++)
1271 fprintf(ofp, ", ");
1272 if (count && count % 3 == 0) {
1273 fprintf(ofp, "\" \\\n\t\t\"");
1274 }
1275 count++;
1276
1277 fprintf(ofp, "%s=", f->name);
1278 if (f->flags & FIELD_IS_STRING ||
1279 f->flags & FIELD_IS_FLAG ||
1280 f->flags & FIELD_IS_ARRAY ||
1281 f->flags & FIELD_IS_SYMBOLIC)
1282 fprintf(ofp, "%%s");
1283 else if (f->flags & FIELD_IS_SIGNED)
1284 fprintf(ofp, "%%d");
1285 else
1286 fprintf(ofp, "%%u");
1287 }
1288
1289 fprintf(ofp, "\" %% \\\n\t\t(");
1290
1291 not_first = 0;
1292 count = 0;
1293
1294 for (f = event->format.fields; f; f = f->next) {
1295 if (not_first++)
1296 fprintf(ofp, ", ");
1297
1298 if (++count % 5 == 0)
1299 fprintf(ofp, "\n\t\t");
1300
1301 if (f->flags & FIELD_IS_FLAG) {
1302 if ((count - 1) % 5 != 0) {
1303 fprintf(ofp, "\n\t\t");
1304 count = 4;
1305 }
1306 fprintf(ofp, "flag_str(\"");
1307 fprintf(ofp, "%s__%s\", ", event->system,
1308 event->name);
1309 fprintf(ofp, "\"%s\", %s)", f->name,
1310 f->name);
1311 } else if (f->flags & FIELD_IS_SYMBOLIC) {
1312 if ((count - 1) % 5 != 0) {
1313 fprintf(ofp, "\n\t\t");
1314 count = 4;
1315 }
1316 fprintf(ofp, "symbol_str(\"");
1317 fprintf(ofp, "%s__%s\", ", event->system,
1318 event->name);
1319 fprintf(ofp, "\"%s\", %s)", f->name,
1320 f->name);
1321 } else
1322 fprintf(ofp, "%s", f->name);
1323 }
1324
1325 fprintf(ofp, ")\n\n");
1326
1327 fprintf(ofp, "\t\tfor node in common_callchain:");
1328 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1329 fprintf(ofp, "\n\t\t\t\tprint \"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name'])");
1330 fprintf(ofp, "\n\t\t\telse:");
1331 fprintf(ofp, "\n\t\t\t\tprint \"\t[%%x]\" %% (node['ip'])\n\n");
1332 fprintf(ofp, "\t\tprint \"\\n\"\n\n");
1333
1334 }
1335
1336 fprintf(ofp, "def trace_unhandled(event_name, context, "
1337 "event_fields_dict):\n");
1338
1339 fprintf(ofp, "\t\tprint ' '.join(['%%s=%%s'%%(k,str(v))"
1340 "for k,v in sorted(event_fields_dict.items())])\n\n");
1341
1342 fprintf(ofp, "def print_header("
1343 "event_name, cpu, secs, nsecs, pid, comm):\n"
1344 "\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1345 "(event_name, cpu, secs, nsecs, pid, comm),\n");
1346
1347 fclose(ofp);
1348
1349 fprintf(stderr, "generated Python script: %s\n", fname);
1350
1351 return 0;
1352}
1353
1354struct scripting_ops python_scripting_ops = {
1355 .name = "Python",
1356 .start_script = python_start_script,
1357 .flush_script = python_flush_script,
1358 .stop_script = python_stop_script,
1359 .process_event = python_process_event,
1360 .process_stat = python_process_stat,
1361 .process_stat_interval = python_process_stat_interval,
1362 .generate_script = python_generate_script,
1363};
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 <traceevent/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 "../db-export.h"
49#include "../thread-stack.h"
50#include "../trace-event.h"
51#include "../call-path.h"
52#include "map.h"
53#include "symbol.h"
54#include "thread_map.h"
55#include "print_binary.h"
56#include "stat.h"
57#include "mem-events.h"
58#include "util/perf_regs.h"
59
60#if PY_MAJOR_VERSION < 3
61#define _PyUnicode_FromString(arg) \
62 PyString_FromString(arg)
63#define _PyUnicode_FromStringAndSize(arg1, arg2) \
64 PyString_FromStringAndSize((arg1), (arg2))
65#define _PyBytes_FromStringAndSize(arg1, arg2) \
66 PyString_FromStringAndSize((arg1), (arg2))
67#define _PyLong_FromLong(arg) \
68 PyInt_FromLong(arg)
69#define _PyLong_AsLong(arg) \
70 PyInt_AsLong(arg)
71#define _PyCapsule_New(arg1, arg2, arg3) \
72 PyCObject_FromVoidPtr((arg1), (arg2))
73
74PyMODINIT_FUNC initperf_trace_context(void);
75#else
76#define _PyUnicode_FromString(arg) \
77 PyUnicode_FromString(arg)
78#define _PyUnicode_FromStringAndSize(arg1, arg2) \
79 PyUnicode_FromStringAndSize((arg1), (arg2))
80#define _PyBytes_FromStringAndSize(arg1, arg2) \
81 PyBytes_FromStringAndSize((arg1), (arg2))
82#define _PyLong_FromLong(arg) \
83 PyLong_FromLong(arg)
84#define _PyLong_AsLong(arg) \
85 PyLong_AsLong(arg)
86#define _PyCapsule_New(arg1, arg2, arg3) \
87 PyCapsule_New((arg1), (arg2), (arg3))
88
89PyMODINIT_FUNC PyInit_perf_trace_context(void);
90#endif
91
92#ifdef HAVE_LIBTRACEEVENT
93#define TRACE_EVENT_TYPE_MAX \
94 ((1 << (sizeof(unsigned short) * 8)) - 1)
95
96#define N_COMMON_FIELDS 7
97
98static char *cur_field_name;
99static int zero_flag_atom;
100#endif
101
102#define MAX_FIELDS 64
103
104extern struct scripting_context *scripting_context;
105
106static PyObject *main_module, *main_dict;
107
108struct tables {
109 struct db_export dbe;
110 PyObject *evsel_handler;
111 PyObject *machine_handler;
112 PyObject *thread_handler;
113 PyObject *comm_handler;
114 PyObject *comm_thread_handler;
115 PyObject *dso_handler;
116 PyObject *symbol_handler;
117 PyObject *branch_type_handler;
118 PyObject *sample_handler;
119 PyObject *call_path_handler;
120 PyObject *call_return_handler;
121 PyObject *synth_handler;
122 PyObject *context_switch_handler;
123 bool db_export_mode;
124};
125
126static struct tables tables_global;
127
128static void handler_call_die(const char *handler_name) __noreturn;
129static void handler_call_die(const char *handler_name)
130{
131 PyErr_Print();
132 Py_FatalError("problem in Python trace event handler");
133 // Py_FatalError does not return
134 // but we have to make the compiler happy
135 abort();
136}
137
138/*
139 * Insert val into the dictionary and decrement the reference counter.
140 * This is necessary for dictionaries since PyDict_SetItemString() does not
141 * steal a reference, as opposed to PyTuple_SetItem().
142 */
143static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
144{
145 PyDict_SetItemString(dict, key, val);
146 Py_DECREF(val);
147}
148
149static PyObject *get_handler(const char *handler_name)
150{
151 PyObject *handler;
152
153 handler = PyDict_GetItemString(main_dict, handler_name);
154 if (handler && !PyCallable_Check(handler))
155 return NULL;
156 return handler;
157}
158
159static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
160{
161 PyObject *retval;
162
163 retval = PyObject_CallObject(handler, args);
164 if (retval == NULL)
165 handler_call_die(die_msg);
166 Py_DECREF(retval);
167}
168
169static void try_call_object(const char *handler_name, PyObject *args)
170{
171 PyObject *handler;
172
173 handler = get_handler(handler_name);
174 if (handler)
175 call_object(handler, args, handler_name);
176}
177
178#ifdef HAVE_LIBTRACEEVENT
179static int get_argument_count(PyObject *handler)
180{
181 int arg_count = 0;
182
183 /*
184 * The attribute for the code object is func_code in Python 2,
185 * whereas it is __code__ in Python 3.0+.
186 */
187 PyObject *code_obj = PyObject_GetAttrString(handler,
188 "func_code");
189 if (PyErr_Occurred()) {
190 PyErr_Clear();
191 code_obj = PyObject_GetAttrString(handler,
192 "__code__");
193 }
194 PyErr_Clear();
195 if (code_obj) {
196 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
197 "co_argcount");
198 if (arg_count_obj) {
199 arg_count = (int) _PyLong_AsLong(arg_count_obj);
200 Py_DECREF(arg_count_obj);
201 }
202 Py_DECREF(code_obj);
203 }
204 return arg_count;
205}
206
207static void define_value(enum tep_print_arg_type field_type,
208 const char *ev_name,
209 const char *field_name,
210 const char *field_value,
211 const char *field_str)
212{
213 const char *handler_name = "define_flag_value";
214 PyObject *t;
215 unsigned long long value;
216 unsigned n = 0;
217
218 if (field_type == TEP_PRINT_SYMBOL)
219 handler_name = "define_symbolic_value";
220
221 t = PyTuple_New(4);
222 if (!t)
223 Py_FatalError("couldn't create Python tuple");
224
225 value = eval_flag(field_value);
226
227 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
228 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
229 PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
230 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
231
232 try_call_object(handler_name, t);
233
234 Py_DECREF(t);
235}
236
237static void define_values(enum tep_print_arg_type field_type,
238 struct tep_print_flag_sym *field,
239 const char *ev_name,
240 const char *field_name)
241{
242 define_value(field_type, ev_name, field_name, field->value,
243 field->str);
244
245 if (field->next)
246 define_values(field_type, field->next, ev_name, field_name);
247}
248
249static void define_field(enum tep_print_arg_type field_type,
250 const char *ev_name,
251 const char *field_name,
252 const char *delim)
253{
254 const char *handler_name = "define_flag_field";
255 PyObject *t;
256 unsigned n = 0;
257
258 if (field_type == TEP_PRINT_SYMBOL)
259 handler_name = "define_symbolic_field";
260
261 if (field_type == TEP_PRINT_FLAGS)
262 t = PyTuple_New(3);
263 else
264 t = PyTuple_New(2);
265 if (!t)
266 Py_FatalError("couldn't create Python tuple");
267
268 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
269 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
270 if (field_type == TEP_PRINT_FLAGS)
271 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
272
273 try_call_object(handler_name, t);
274
275 Py_DECREF(t);
276}
277
278static void define_event_symbols(struct tep_event *event,
279 const char *ev_name,
280 struct tep_print_arg *args)
281{
282 if (args == NULL)
283 return;
284
285 switch (args->type) {
286 case TEP_PRINT_NULL:
287 break;
288 case TEP_PRINT_ATOM:
289 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
290 args->atom.atom);
291 zero_flag_atom = 0;
292 break;
293 case TEP_PRINT_FIELD:
294 free(cur_field_name);
295 cur_field_name = strdup(args->field.name);
296 break;
297 case TEP_PRINT_FLAGS:
298 define_event_symbols(event, ev_name, args->flags.field);
299 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
300 args->flags.delim);
301 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
302 cur_field_name);
303 break;
304 case TEP_PRINT_SYMBOL:
305 define_event_symbols(event, ev_name, args->symbol.field);
306 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
307 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
308 cur_field_name);
309 break;
310 case TEP_PRINT_HEX:
311 case TEP_PRINT_HEX_STR:
312 define_event_symbols(event, ev_name, args->hex.field);
313 define_event_symbols(event, ev_name, args->hex.size);
314 break;
315 case TEP_PRINT_INT_ARRAY:
316 define_event_symbols(event, ev_name, args->int_array.field);
317 define_event_symbols(event, ev_name, args->int_array.count);
318 define_event_symbols(event, ev_name, args->int_array.el_size);
319 break;
320 case TEP_PRINT_STRING:
321 break;
322 case TEP_PRINT_TYPE:
323 define_event_symbols(event, ev_name, args->typecast.item);
324 break;
325 case TEP_PRINT_OP:
326 if (strcmp(args->op.op, ":") == 0)
327 zero_flag_atom = 1;
328 define_event_symbols(event, ev_name, args->op.left);
329 define_event_symbols(event, ev_name, args->op.right);
330 break;
331 default:
332 /* gcc warns for these? */
333 case TEP_PRINT_BSTRING:
334 case TEP_PRINT_DYNAMIC_ARRAY:
335 case TEP_PRINT_DYNAMIC_ARRAY_LEN:
336 case TEP_PRINT_FUNC:
337 case TEP_PRINT_BITMASK:
338 /* we should warn... */
339 return;
340 }
341
342 if (args->next)
343 define_event_symbols(event, ev_name, args->next);
344}
345
346static PyObject *get_field_numeric_entry(struct tep_event *event,
347 struct tep_format_field *field, void *data)
348{
349 bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
350 PyObject *obj = NULL, *list = NULL;
351 unsigned long long val;
352 unsigned int item_size, n_items, i;
353
354 if (is_array) {
355 list = PyList_New(field->arraylen);
356 if (!list)
357 Py_FatalError("couldn't create Python list");
358 item_size = field->size / field->arraylen;
359 n_items = field->arraylen;
360 } else {
361 item_size = field->size;
362 n_items = 1;
363 }
364
365 for (i = 0; i < n_items; i++) {
366
367 val = read_size(event, data + field->offset + i * item_size,
368 item_size);
369 if (field->flags & TEP_FIELD_IS_SIGNED) {
370 if ((long long)val >= LONG_MIN &&
371 (long long)val <= LONG_MAX)
372 obj = _PyLong_FromLong(val);
373 else
374 obj = PyLong_FromLongLong(val);
375 } else {
376 if (val <= LONG_MAX)
377 obj = _PyLong_FromLong(val);
378 else
379 obj = PyLong_FromUnsignedLongLong(val);
380 }
381 if (is_array)
382 PyList_SET_ITEM(list, i, obj);
383 }
384 if (is_array)
385 obj = list;
386 return obj;
387}
388#endif
389
390static const char *get_dsoname(struct map *map)
391{
392 const char *dsoname = "[unknown]";
393 struct dso *dso = map ? map__dso(map) : NULL;
394
395 if (dso) {
396 if (symbol_conf.show_kernel_path && dso->long_name)
397 dsoname = dso->long_name;
398 else
399 dsoname = dso->name;
400 }
401
402 return dsoname;
403}
404
405static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
406{
407 unsigned long offset;
408
409 if (al->addr < sym->end)
410 offset = al->addr - sym->start;
411 else
412 offset = al->addr - map__start(al->map) - sym->start;
413
414 return offset;
415}
416
417static PyObject *python_process_callchain(struct perf_sample *sample,
418 struct evsel *evsel,
419 struct addr_location *al)
420{
421 PyObject *pylist;
422 struct callchain_cursor *cursor;
423
424 pylist = PyList_New(0);
425 if (!pylist)
426 Py_FatalError("couldn't create Python list");
427
428 if (!symbol_conf.use_callchain || !sample->callchain)
429 goto exit;
430
431 cursor = get_tls_callchain_cursor();
432 if (thread__resolve_callchain(al->thread, cursor, evsel,
433 sample, NULL, NULL,
434 scripting_max_stack) != 0) {
435 pr_err("Failed to resolve callchain. Skipping\n");
436 goto exit;
437 }
438 callchain_cursor_commit(cursor);
439
440
441 while (1) {
442 PyObject *pyelem;
443 struct callchain_cursor_node *node;
444 node = callchain_cursor_current(cursor);
445 if (!node)
446 break;
447
448 pyelem = PyDict_New();
449 if (!pyelem)
450 Py_FatalError("couldn't create Python dictionary");
451
452
453 pydict_set_item_string_decref(pyelem, "ip",
454 PyLong_FromUnsignedLongLong(node->ip));
455
456 if (node->ms.sym) {
457 PyObject *pysym = PyDict_New();
458 if (!pysym)
459 Py_FatalError("couldn't create Python dictionary");
460 pydict_set_item_string_decref(pysym, "start",
461 PyLong_FromUnsignedLongLong(node->ms.sym->start));
462 pydict_set_item_string_decref(pysym, "end",
463 PyLong_FromUnsignedLongLong(node->ms.sym->end));
464 pydict_set_item_string_decref(pysym, "binding",
465 _PyLong_FromLong(node->ms.sym->binding));
466 pydict_set_item_string_decref(pysym, "name",
467 _PyUnicode_FromStringAndSize(node->ms.sym->name,
468 node->ms.sym->namelen));
469 pydict_set_item_string_decref(pyelem, "sym", pysym);
470
471 if (node->ms.map) {
472 struct map *map = node->ms.map;
473 struct addr_location node_al;
474 unsigned long offset;
475
476 addr_location__init(&node_al);
477 node_al.addr = map__map_ip(map, node->ip);
478 node_al.map = map__get(map);
479 offset = get_offset(node->ms.sym, &node_al);
480 addr_location__exit(&node_al);
481
482 pydict_set_item_string_decref(
483 pyelem, "sym_off",
484 PyLong_FromUnsignedLongLong(offset));
485 }
486 if (node->srcline && strcmp(":0", node->srcline)) {
487 pydict_set_item_string_decref(
488 pyelem, "sym_srcline",
489 _PyUnicode_FromString(node->srcline));
490 }
491 }
492
493 if (node->ms.map) {
494 const char *dsoname = get_dsoname(node->ms.map);
495
496 pydict_set_item_string_decref(pyelem, "dso",
497 _PyUnicode_FromString(dsoname));
498 }
499
500 callchain_cursor_advance(cursor);
501 PyList_Append(pylist, pyelem);
502 Py_DECREF(pyelem);
503 }
504
505exit:
506 return pylist;
507}
508
509static PyObject *python_process_brstack(struct perf_sample *sample,
510 struct thread *thread)
511{
512 struct branch_stack *br = sample->branch_stack;
513 struct branch_entry *entries = perf_sample__branch_entries(sample);
514 PyObject *pylist;
515 u64 i;
516
517 pylist = PyList_New(0);
518 if (!pylist)
519 Py_FatalError("couldn't create Python list");
520
521 if (!(br && br->nr))
522 goto exit;
523
524 for (i = 0; i < br->nr; i++) {
525 PyObject *pyelem;
526 struct addr_location al;
527 const char *dsoname;
528
529 pyelem = PyDict_New();
530 if (!pyelem)
531 Py_FatalError("couldn't create Python dictionary");
532
533 pydict_set_item_string_decref(pyelem, "from",
534 PyLong_FromUnsignedLongLong(entries[i].from));
535 pydict_set_item_string_decref(pyelem, "to",
536 PyLong_FromUnsignedLongLong(entries[i].to));
537 pydict_set_item_string_decref(pyelem, "mispred",
538 PyBool_FromLong(entries[i].flags.mispred));
539 pydict_set_item_string_decref(pyelem, "predicted",
540 PyBool_FromLong(entries[i].flags.predicted));
541 pydict_set_item_string_decref(pyelem, "in_tx",
542 PyBool_FromLong(entries[i].flags.in_tx));
543 pydict_set_item_string_decref(pyelem, "abort",
544 PyBool_FromLong(entries[i].flags.abort));
545 pydict_set_item_string_decref(pyelem, "cycles",
546 PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
547
548 addr_location__init(&al);
549 thread__find_map_fb(thread, sample->cpumode,
550 entries[i].from, &al);
551 dsoname = get_dsoname(al.map);
552 pydict_set_item_string_decref(pyelem, "from_dsoname",
553 _PyUnicode_FromString(dsoname));
554
555 thread__find_map_fb(thread, sample->cpumode,
556 entries[i].to, &al);
557 dsoname = get_dsoname(al.map);
558 pydict_set_item_string_decref(pyelem, "to_dsoname",
559 _PyUnicode_FromString(dsoname));
560
561 addr_location__exit(&al);
562 PyList_Append(pylist, pyelem);
563 Py_DECREF(pyelem);
564 }
565
566exit:
567 return pylist;
568}
569
570static int get_symoff(struct symbol *sym, struct addr_location *al,
571 bool print_off, char *bf, int size)
572{
573 unsigned long offset;
574
575 if (!sym || !sym->name[0])
576 return scnprintf(bf, size, "%s", "[unknown]");
577
578 if (!print_off)
579 return scnprintf(bf, size, "%s", sym->name);
580
581 offset = get_offset(sym, al);
582
583 return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
584}
585
586static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
587{
588 if (!flags->mispred && !flags->predicted)
589 return scnprintf(bf, size, "%s", "-");
590
591 if (flags->mispred)
592 return scnprintf(bf, size, "%s", "M");
593
594 return scnprintf(bf, size, "%s", "P");
595}
596
597static PyObject *python_process_brstacksym(struct perf_sample *sample,
598 struct thread *thread)
599{
600 struct branch_stack *br = sample->branch_stack;
601 struct branch_entry *entries = perf_sample__branch_entries(sample);
602 PyObject *pylist;
603 u64 i;
604 char bf[512];
605
606 pylist = PyList_New(0);
607 if (!pylist)
608 Py_FatalError("couldn't create Python list");
609
610 if (!(br && br->nr))
611 goto exit;
612
613 for (i = 0; i < br->nr; i++) {
614 PyObject *pyelem;
615 struct addr_location al;
616
617 addr_location__init(&al);
618 pyelem = PyDict_New();
619 if (!pyelem)
620 Py_FatalError("couldn't create Python dictionary");
621
622 thread__find_symbol_fb(thread, sample->cpumode,
623 entries[i].from, &al);
624 get_symoff(al.sym, &al, true, bf, sizeof(bf));
625 pydict_set_item_string_decref(pyelem, "from",
626 _PyUnicode_FromString(bf));
627
628 thread__find_symbol_fb(thread, sample->cpumode,
629 entries[i].to, &al);
630 get_symoff(al.sym, &al, true, bf, sizeof(bf));
631 pydict_set_item_string_decref(pyelem, "to",
632 _PyUnicode_FromString(bf));
633
634 get_br_mspred(&entries[i].flags, bf, sizeof(bf));
635 pydict_set_item_string_decref(pyelem, "pred",
636 _PyUnicode_FromString(bf));
637
638 if (entries[i].flags.in_tx) {
639 pydict_set_item_string_decref(pyelem, "in_tx",
640 _PyUnicode_FromString("X"));
641 } else {
642 pydict_set_item_string_decref(pyelem, "in_tx",
643 _PyUnicode_FromString("-"));
644 }
645
646 if (entries[i].flags.abort) {
647 pydict_set_item_string_decref(pyelem, "abort",
648 _PyUnicode_FromString("A"));
649 } else {
650 pydict_set_item_string_decref(pyelem, "abort",
651 _PyUnicode_FromString("-"));
652 }
653
654 PyList_Append(pylist, pyelem);
655 Py_DECREF(pyelem);
656 addr_location__exit(&al);
657 }
658
659exit:
660 return pylist;
661}
662
663static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
664 u64 read_format)
665{
666 PyObject *t;
667
668 t = PyTuple_New(3);
669 if (!t)
670 Py_FatalError("couldn't create Python tuple");
671 PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
672 PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
673 if (read_format & PERF_FORMAT_LOST)
674 PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
675
676 return t;
677}
678
679static void set_sample_read_in_dict(PyObject *dict_sample,
680 struct perf_sample *sample,
681 struct evsel *evsel)
682{
683 u64 read_format = evsel->core.attr.read_format;
684 PyObject *values;
685 unsigned int i;
686
687 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
688 pydict_set_item_string_decref(dict_sample, "time_enabled",
689 PyLong_FromUnsignedLongLong(sample->read.time_enabled));
690 }
691
692 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
693 pydict_set_item_string_decref(dict_sample, "time_running",
694 PyLong_FromUnsignedLongLong(sample->read.time_running));
695 }
696
697 if (read_format & PERF_FORMAT_GROUP)
698 values = PyList_New(sample->read.group.nr);
699 else
700 values = PyList_New(1);
701
702 if (!values)
703 Py_FatalError("couldn't create Python list");
704
705 if (read_format & PERF_FORMAT_GROUP) {
706 struct sample_read_value *v = sample->read.group.values;
707
708 i = 0;
709 sample_read_group__for_each(v, sample->read.group.nr, read_format) {
710 PyObject *t = get_sample_value_as_tuple(v, read_format);
711 PyList_SET_ITEM(values, i, t);
712 i++;
713 }
714 } else {
715 PyObject *t = get_sample_value_as_tuple(&sample->read.one,
716 read_format);
717 PyList_SET_ITEM(values, 0, t);
718 }
719 pydict_set_item_string_decref(dict_sample, "values", values);
720}
721
722static void set_sample_datasrc_in_dict(PyObject *dict,
723 struct perf_sample *sample)
724{
725 struct mem_info mi = { .data_src.val = sample->data_src };
726 char decode[100];
727
728 pydict_set_item_string_decref(dict, "datasrc",
729 PyLong_FromUnsignedLongLong(sample->data_src));
730
731 perf_script__meminfo_scnprintf(decode, 100, &mi);
732
733 pydict_set_item_string_decref(dict, "datasrc_decode",
734 _PyUnicode_FromString(decode));
735}
736
737static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
738{
739 unsigned int i = 0, r;
740 int printed = 0;
741
742 bf[0] = 0;
743
744 if (size <= 0)
745 return;
746
747 if (!regs || !regs->regs)
748 return;
749
750 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
751 u64 val = regs->regs[i++];
752
753 printed += scnprintf(bf + printed, size - printed,
754 "%5s:0x%" PRIx64 " ",
755 perf_reg_name(r, arch), val);
756 }
757}
758
759static int set_regs_in_dict(PyObject *dict,
760 struct perf_sample *sample,
761 struct evsel *evsel)
762{
763 struct perf_event_attr *attr = &evsel->core.attr;
764 const char *arch = perf_env__arch(evsel__env(evsel));
765
766 /*
767 * Here value 28 is a constant size which can be used to print
768 * one register value and its corresponds to:
769 * 16 chars is to specify 64 bit register in hexadecimal.
770 * 2 chars is for appending "0x" to the hexadecimal value and
771 * 10 chars is for register name.
772 */
773 int size = __sw_hweight64(attr->sample_regs_intr) * 28;
774 char *bf = malloc(size);
775 if (!bf)
776 return -1;
777
778 regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, size);
779
780 pydict_set_item_string_decref(dict, "iregs",
781 _PyUnicode_FromString(bf));
782
783 regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, size);
784
785 pydict_set_item_string_decref(dict, "uregs",
786 _PyUnicode_FromString(bf));
787 free(bf);
788
789 return 0;
790}
791
792static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
793 const char *dso_field, const char *dso_bid_field,
794 const char *dso_map_start, const char *dso_map_end,
795 const char *sym_field, const char *symoff_field)
796{
797 char sbuild_id[SBUILD_ID_SIZE];
798
799 if (al->map) {
800 struct dso *dso = map__dso(al->map);
801
802 pydict_set_item_string_decref(dict, dso_field, _PyUnicode_FromString(dso->name));
803 build_id__sprintf(&dso->bid, sbuild_id);
804 pydict_set_item_string_decref(dict, dso_bid_field,
805 _PyUnicode_FromString(sbuild_id));
806 pydict_set_item_string_decref(dict, dso_map_start,
807 PyLong_FromUnsignedLong(map__start(al->map)));
808 pydict_set_item_string_decref(dict, dso_map_end,
809 PyLong_FromUnsignedLong(map__end(al->map)));
810 }
811 if (al->sym) {
812 pydict_set_item_string_decref(dict, sym_field,
813 _PyUnicode_FromString(al->sym->name));
814 pydict_set_item_string_decref(dict, symoff_field,
815 PyLong_FromUnsignedLong(get_offset(al->sym, al)));
816 }
817}
818
819static void set_sample_flags(PyObject *dict, u32 flags)
820{
821 const char *ch = PERF_IP_FLAG_CHARS;
822 char *p, str[33];
823
824 for (p = str; *ch; ch++, flags >>= 1) {
825 if (flags & 1)
826 *p++ = *ch;
827 }
828 *p = 0;
829 pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
830}
831
832static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
833{
834 char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
835
836 set_sample_flags(dict_sample, sample->flags);
837 perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
838 pydict_set_item_string_decref(dict_sample, "flags_disp",
839 _PyUnicode_FromString(flags_disp));
840}
841
842static PyObject *get_perf_sample_dict(struct perf_sample *sample,
843 struct evsel *evsel,
844 struct addr_location *al,
845 struct addr_location *addr_al,
846 PyObject *callchain)
847{
848 PyObject *dict, *dict_sample, *brstack, *brstacksym;
849
850 dict = PyDict_New();
851 if (!dict)
852 Py_FatalError("couldn't create Python dictionary");
853
854 dict_sample = PyDict_New();
855 if (!dict_sample)
856 Py_FatalError("couldn't create Python dictionary");
857
858 pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
859 pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
860
861 pydict_set_item_string_decref(dict_sample, "pid",
862 _PyLong_FromLong(sample->pid));
863 pydict_set_item_string_decref(dict_sample, "tid",
864 _PyLong_FromLong(sample->tid));
865 pydict_set_item_string_decref(dict_sample, "cpu",
866 _PyLong_FromLong(sample->cpu));
867 pydict_set_item_string_decref(dict_sample, "ip",
868 PyLong_FromUnsignedLongLong(sample->ip));
869 pydict_set_item_string_decref(dict_sample, "time",
870 PyLong_FromUnsignedLongLong(sample->time));
871 pydict_set_item_string_decref(dict_sample, "period",
872 PyLong_FromUnsignedLongLong(sample->period));
873 pydict_set_item_string_decref(dict_sample, "phys_addr",
874 PyLong_FromUnsignedLongLong(sample->phys_addr));
875 pydict_set_item_string_decref(dict_sample, "addr",
876 PyLong_FromUnsignedLongLong(sample->addr));
877 set_sample_read_in_dict(dict_sample, sample, evsel);
878 pydict_set_item_string_decref(dict_sample, "weight",
879 PyLong_FromUnsignedLongLong(sample->weight));
880 pydict_set_item_string_decref(dict_sample, "transaction",
881 PyLong_FromUnsignedLongLong(sample->transaction));
882 set_sample_datasrc_in_dict(dict_sample, sample);
883 pydict_set_item_string_decref(dict, "sample", dict_sample);
884
885 pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
886 (const char *)sample->raw_data, sample->raw_size));
887 pydict_set_item_string_decref(dict, "comm",
888 _PyUnicode_FromString(thread__comm_str(al->thread)));
889 set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
890 "symbol", "symoff");
891
892 pydict_set_item_string_decref(dict, "callchain", callchain);
893
894 brstack = python_process_brstack(sample, al->thread);
895 pydict_set_item_string_decref(dict, "brstack", brstack);
896
897 brstacksym = python_process_brstacksym(sample, al->thread);
898 pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
899
900 if (sample->machine_pid) {
901 pydict_set_item_string_decref(dict_sample, "machine_pid",
902 _PyLong_FromLong(sample->machine_pid));
903 pydict_set_item_string_decref(dict_sample, "vcpu",
904 _PyLong_FromLong(sample->vcpu));
905 }
906
907 pydict_set_item_string_decref(dict_sample, "cpumode",
908 _PyLong_FromLong((unsigned long)sample->cpumode));
909
910 if (addr_al) {
911 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
912 PyBool_FromLong(1));
913 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
914 "addr_dso_map_start", "addr_dso_map_end",
915 "addr_symbol", "addr_symoff");
916 }
917
918 if (sample->flags)
919 python_process_sample_flags(sample, dict_sample);
920
921 /* Instructions per cycle (IPC) */
922 if (sample->insn_cnt && sample->cyc_cnt) {
923 pydict_set_item_string_decref(dict_sample, "insn_cnt",
924 PyLong_FromUnsignedLongLong(sample->insn_cnt));
925 pydict_set_item_string_decref(dict_sample, "cyc_cnt",
926 PyLong_FromUnsignedLongLong(sample->cyc_cnt));
927 }
928
929 if (set_regs_in_dict(dict, sample, evsel))
930 Py_FatalError("Failed to setting regs in dict");
931
932 return dict;
933}
934
935#ifdef HAVE_LIBTRACEEVENT
936static void python_process_tracepoint(struct perf_sample *sample,
937 struct evsel *evsel,
938 struct addr_location *al,
939 struct addr_location *addr_al)
940{
941 struct tep_event *event = evsel->tp_format;
942 PyObject *handler, *context, *t, *obj = NULL, *callchain;
943 PyObject *dict = NULL, *all_entries_dict = NULL;
944 static char handler_name[256];
945 struct tep_format_field *field;
946 unsigned long s, ns;
947 unsigned n = 0;
948 int pid;
949 int cpu = sample->cpu;
950 void *data = sample->raw_data;
951 unsigned long long nsecs = sample->time;
952 const char *comm = thread__comm_str(al->thread);
953 const char *default_handler_name = "trace_unhandled";
954 DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
955
956 bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
957
958 if (!event) {
959 snprintf(handler_name, sizeof(handler_name),
960 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
961 Py_FatalError(handler_name);
962 }
963
964 pid = raw_field_value(event, "common_pid", data);
965
966 sprintf(handler_name, "%s__%s", event->system, event->name);
967
968 if (!__test_and_set_bit(event->id, events_defined))
969 define_event_symbols(event, handler_name, event->print_fmt.args);
970
971 handler = get_handler(handler_name);
972 if (!handler) {
973 handler = get_handler(default_handler_name);
974 if (!handler)
975 return;
976 dict = PyDict_New();
977 if (!dict)
978 Py_FatalError("couldn't create Python dict");
979 }
980
981 t = PyTuple_New(MAX_FIELDS);
982 if (!t)
983 Py_FatalError("couldn't create Python tuple");
984
985
986 s = nsecs / NSEC_PER_SEC;
987 ns = nsecs - s * NSEC_PER_SEC;
988
989 context = _PyCapsule_New(scripting_context, NULL, NULL);
990
991 PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
992 PyTuple_SetItem(t, n++, context);
993
994 /* ip unwinding */
995 callchain = python_process_callchain(sample, evsel, al);
996 /* Need an additional reference for the perf_sample dict */
997 Py_INCREF(callchain);
998
999 if (!dict) {
1000 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1001 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
1002 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
1003 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
1004 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
1005 PyTuple_SetItem(t, n++, callchain);
1006 } else {
1007 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
1008 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
1009 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
1010 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
1011 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
1012 pydict_set_item_string_decref(dict, "common_callchain", callchain);
1013 }
1014 for (field = event->format.fields; field; field = field->next) {
1015 unsigned int offset, len;
1016 unsigned long long val;
1017
1018 if (field->flags & TEP_FIELD_IS_ARRAY) {
1019 offset = field->offset;
1020 len = field->size;
1021 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1022 val = tep_read_number(scripting_context->pevent,
1023 data + offset, len);
1024 offset = val;
1025 len = offset >> 16;
1026 offset &= 0xffff;
1027 if (tep_field_is_relative(field->flags))
1028 offset += field->offset + field->size;
1029 }
1030 if (field->flags & TEP_FIELD_IS_STRING &&
1031 is_printable_array(data + offset, len)) {
1032 obj = _PyUnicode_FromString((char *) data + offset);
1033 } else {
1034 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1035 field->flags &= ~TEP_FIELD_IS_STRING;
1036 }
1037 } else { /* FIELD_IS_NUMERIC */
1038 obj = get_field_numeric_entry(event, field, data);
1039 }
1040 if (!dict)
1041 PyTuple_SetItem(t, n++, obj);
1042 else
1043 pydict_set_item_string_decref(dict, field->name, obj);
1044
1045 }
1046
1047 if (dict)
1048 PyTuple_SetItem(t, n++, dict);
1049
1050 if (get_argument_count(handler) == (int) n + 1) {
1051 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1052 callchain);
1053 PyTuple_SetItem(t, n++, all_entries_dict);
1054 } else {
1055 Py_DECREF(callchain);
1056 }
1057
1058 if (_PyTuple_Resize(&t, n) == -1)
1059 Py_FatalError("error resizing Python tuple");
1060
1061 if (!dict)
1062 call_object(handler, t, handler_name);
1063 else
1064 call_object(handler, t, default_handler_name);
1065
1066 Py_DECREF(t);
1067}
1068#else
1069static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1070 struct evsel *evsel __maybe_unused,
1071 struct addr_location *al __maybe_unused,
1072 struct addr_location *addr_al __maybe_unused)
1073{
1074 fprintf(stderr, "Tracepoint events are not supported because "
1075 "perf is not linked with libtraceevent.\n");
1076}
1077#endif
1078
1079static PyObject *tuple_new(unsigned int sz)
1080{
1081 PyObject *t;
1082
1083 t = PyTuple_New(sz);
1084 if (!t)
1085 Py_FatalError("couldn't create Python tuple");
1086 return t;
1087}
1088
1089static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1090{
1091#if BITS_PER_LONG == 64
1092 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1093#endif
1094#if BITS_PER_LONG == 32
1095 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1096#endif
1097}
1098
1099/*
1100 * Databases support only signed 64-bit numbers, so even though we are
1101 * exporting a u64, it must be as s64.
1102 */
1103#define tuple_set_d64 tuple_set_s64
1104
1105static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1106{
1107#if BITS_PER_LONG == 64
1108 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1109#endif
1110#if BITS_PER_LONG == 32
1111 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1112#endif
1113}
1114
1115static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1116{
1117 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1118}
1119
1120static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1121{
1122 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1123}
1124
1125static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1126{
1127 return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1128}
1129
1130static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1131{
1132 return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1133}
1134
1135static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1136 unsigned int sz)
1137{
1138 return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1139}
1140
1141static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1142{
1143 struct tables *tables = container_of(dbe, struct tables, dbe);
1144 PyObject *t;
1145
1146 t = tuple_new(2);
1147
1148 tuple_set_d64(t, 0, evsel->db_id);
1149 tuple_set_string(t, 1, evsel__name(evsel));
1150
1151 call_object(tables->evsel_handler, t, "evsel_table");
1152
1153 Py_DECREF(t);
1154
1155 return 0;
1156}
1157
1158static int python_export_machine(struct db_export *dbe,
1159 struct machine *machine)
1160{
1161 struct tables *tables = container_of(dbe, struct tables, dbe);
1162 PyObject *t;
1163
1164 t = tuple_new(3);
1165
1166 tuple_set_d64(t, 0, machine->db_id);
1167 tuple_set_s32(t, 1, machine->pid);
1168 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1169
1170 call_object(tables->machine_handler, t, "machine_table");
1171
1172 Py_DECREF(t);
1173
1174 return 0;
1175}
1176
1177static int python_export_thread(struct db_export *dbe, struct thread *thread,
1178 u64 main_thread_db_id, struct machine *machine)
1179{
1180 struct tables *tables = container_of(dbe, struct tables, dbe);
1181 PyObject *t;
1182
1183 t = tuple_new(5);
1184
1185 tuple_set_d64(t, 0, thread__db_id(thread));
1186 tuple_set_d64(t, 1, machine->db_id);
1187 tuple_set_d64(t, 2, main_thread_db_id);
1188 tuple_set_s32(t, 3, thread__pid(thread));
1189 tuple_set_s32(t, 4, thread__tid(thread));
1190
1191 call_object(tables->thread_handler, t, "thread_table");
1192
1193 Py_DECREF(t);
1194
1195 return 0;
1196}
1197
1198static int python_export_comm(struct db_export *dbe, struct comm *comm,
1199 struct thread *thread)
1200{
1201 struct tables *tables = container_of(dbe, struct tables, dbe);
1202 PyObject *t;
1203
1204 t = tuple_new(5);
1205
1206 tuple_set_d64(t, 0, comm->db_id);
1207 tuple_set_string(t, 1, comm__str(comm));
1208 tuple_set_d64(t, 2, thread__db_id(thread));
1209 tuple_set_d64(t, 3, comm->start);
1210 tuple_set_s32(t, 4, comm->exec);
1211
1212 call_object(tables->comm_handler, t, "comm_table");
1213
1214 Py_DECREF(t);
1215
1216 return 0;
1217}
1218
1219static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1220 struct comm *comm, struct thread *thread)
1221{
1222 struct tables *tables = container_of(dbe, struct tables, dbe);
1223 PyObject *t;
1224
1225 t = tuple_new(3);
1226
1227 tuple_set_d64(t, 0, db_id);
1228 tuple_set_d64(t, 1, comm->db_id);
1229 tuple_set_d64(t, 2, thread__db_id(thread));
1230
1231 call_object(tables->comm_thread_handler, t, "comm_thread_table");
1232
1233 Py_DECREF(t);
1234
1235 return 0;
1236}
1237
1238static int python_export_dso(struct db_export *dbe, struct dso *dso,
1239 struct machine *machine)
1240{
1241 struct tables *tables = container_of(dbe, struct tables, dbe);
1242 char sbuild_id[SBUILD_ID_SIZE];
1243 PyObject *t;
1244
1245 build_id__sprintf(&dso->bid, sbuild_id);
1246
1247 t = tuple_new(5);
1248
1249 tuple_set_d64(t, 0, dso->db_id);
1250 tuple_set_d64(t, 1, machine->db_id);
1251 tuple_set_string(t, 2, dso->short_name);
1252 tuple_set_string(t, 3, dso->long_name);
1253 tuple_set_string(t, 4, sbuild_id);
1254
1255 call_object(tables->dso_handler, t, "dso_table");
1256
1257 Py_DECREF(t);
1258
1259 return 0;
1260}
1261
1262static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1263 struct dso *dso)
1264{
1265 struct tables *tables = container_of(dbe, struct tables, dbe);
1266 u64 *sym_db_id = symbol__priv(sym);
1267 PyObject *t;
1268
1269 t = tuple_new(6);
1270
1271 tuple_set_d64(t, 0, *sym_db_id);
1272 tuple_set_d64(t, 1, dso->db_id);
1273 tuple_set_d64(t, 2, sym->start);
1274 tuple_set_d64(t, 3, sym->end);
1275 tuple_set_s32(t, 4, sym->binding);
1276 tuple_set_string(t, 5, sym->name);
1277
1278 call_object(tables->symbol_handler, t, "symbol_table");
1279
1280 Py_DECREF(t);
1281
1282 return 0;
1283}
1284
1285static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1286 const char *name)
1287{
1288 struct tables *tables = container_of(dbe, struct tables, dbe);
1289 PyObject *t;
1290
1291 t = tuple_new(2);
1292
1293 tuple_set_s32(t, 0, branch_type);
1294 tuple_set_string(t, 1, name);
1295
1296 call_object(tables->branch_type_handler, t, "branch_type_table");
1297
1298 Py_DECREF(t);
1299
1300 return 0;
1301}
1302
1303static void python_export_sample_table(struct db_export *dbe,
1304 struct export_sample *es)
1305{
1306 struct tables *tables = container_of(dbe, struct tables, dbe);
1307 PyObject *t;
1308
1309 t = tuple_new(25);
1310
1311 tuple_set_d64(t, 0, es->db_id);
1312 tuple_set_d64(t, 1, es->evsel->db_id);
1313 tuple_set_d64(t, 2, maps__machine(es->al->maps)->db_id);
1314 tuple_set_d64(t, 3, thread__db_id(es->al->thread));
1315 tuple_set_d64(t, 4, es->comm_db_id);
1316 tuple_set_d64(t, 5, es->dso_db_id);
1317 tuple_set_d64(t, 6, es->sym_db_id);
1318 tuple_set_d64(t, 7, es->offset);
1319 tuple_set_d64(t, 8, es->sample->ip);
1320 tuple_set_d64(t, 9, es->sample->time);
1321 tuple_set_s32(t, 10, es->sample->cpu);
1322 tuple_set_d64(t, 11, es->addr_dso_db_id);
1323 tuple_set_d64(t, 12, es->addr_sym_db_id);
1324 tuple_set_d64(t, 13, es->addr_offset);
1325 tuple_set_d64(t, 14, es->sample->addr);
1326 tuple_set_d64(t, 15, es->sample->period);
1327 tuple_set_d64(t, 16, es->sample->weight);
1328 tuple_set_d64(t, 17, es->sample->transaction);
1329 tuple_set_d64(t, 18, es->sample->data_src);
1330 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1331 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1332 tuple_set_d64(t, 21, es->call_path_id);
1333 tuple_set_d64(t, 22, es->sample->insn_cnt);
1334 tuple_set_d64(t, 23, es->sample->cyc_cnt);
1335 tuple_set_s32(t, 24, es->sample->flags);
1336
1337 call_object(tables->sample_handler, t, "sample_table");
1338
1339 Py_DECREF(t);
1340}
1341
1342static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1343{
1344 struct tables *tables = container_of(dbe, struct tables, dbe);
1345 PyObject *t;
1346
1347 t = tuple_new(3);
1348
1349 tuple_set_d64(t, 0, es->db_id);
1350 tuple_set_d64(t, 1, es->evsel->core.attr.config);
1351 tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1352
1353 call_object(tables->synth_handler, t, "synth_data");
1354
1355 Py_DECREF(t);
1356}
1357
1358static int python_export_sample(struct db_export *dbe,
1359 struct export_sample *es)
1360{
1361 struct tables *tables = container_of(dbe, struct tables, dbe);
1362
1363 python_export_sample_table(dbe, es);
1364
1365 if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1366 python_export_synth(dbe, es);
1367
1368 return 0;
1369}
1370
1371static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1372{
1373 struct tables *tables = container_of(dbe, struct tables, dbe);
1374 PyObject *t;
1375 u64 parent_db_id, sym_db_id;
1376
1377 parent_db_id = cp->parent ? cp->parent->db_id : 0;
1378 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1379
1380 t = tuple_new(4);
1381
1382 tuple_set_d64(t, 0, cp->db_id);
1383 tuple_set_d64(t, 1, parent_db_id);
1384 tuple_set_d64(t, 2, sym_db_id);
1385 tuple_set_d64(t, 3, cp->ip);
1386
1387 call_object(tables->call_path_handler, t, "call_path_table");
1388
1389 Py_DECREF(t);
1390
1391 return 0;
1392}
1393
1394static int python_export_call_return(struct db_export *dbe,
1395 struct call_return *cr)
1396{
1397 struct tables *tables = container_of(dbe, struct tables, dbe);
1398 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1399 PyObject *t;
1400
1401 t = tuple_new(14);
1402
1403 tuple_set_d64(t, 0, cr->db_id);
1404 tuple_set_d64(t, 1, thread__db_id(cr->thread));
1405 tuple_set_d64(t, 2, comm_db_id);
1406 tuple_set_d64(t, 3, cr->cp->db_id);
1407 tuple_set_d64(t, 4, cr->call_time);
1408 tuple_set_d64(t, 5, cr->return_time);
1409 tuple_set_d64(t, 6, cr->branch_count);
1410 tuple_set_d64(t, 7, cr->call_ref);
1411 tuple_set_d64(t, 8, cr->return_ref);
1412 tuple_set_d64(t, 9, cr->cp->parent->db_id);
1413 tuple_set_s32(t, 10, cr->flags);
1414 tuple_set_d64(t, 11, cr->parent_db_id);
1415 tuple_set_d64(t, 12, cr->insn_count);
1416 tuple_set_d64(t, 13, cr->cyc_count);
1417
1418 call_object(tables->call_return_handler, t, "call_return_table");
1419
1420 Py_DECREF(t);
1421
1422 return 0;
1423}
1424
1425static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1426 struct machine *machine,
1427 struct perf_sample *sample,
1428 u64 th_out_id, u64 comm_out_id,
1429 u64 th_in_id, u64 comm_in_id, int flags)
1430{
1431 struct tables *tables = container_of(dbe, struct tables, dbe);
1432 PyObject *t;
1433
1434 t = tuple_new(9);
1435
1436 tuple_set_d64(t, 0, db_id);
1437 tuple_set_d64(t, 1, machine->db_id);
1438 tuple_set_d64(t, 2, sample->time);
1439 tuple_set_s32(t, 3, sample->cpu);
1440 tuple_set_d64(t, 4, th_out_id);
1441 tuple_set_d64(t, 5, comm_out_id);
1442 tuple_set_d64(t, 6, th_in_id);
1443 tuple_set_d64(t, 7, comm_in_id);
1444 tuple_set_s32(t, 8, flags);
1445
1446 call_object(tables->context_switch_handler, t, "context_switch");
1447
1448 Py_DECREF(t);
1449
1450 return 0;
1451}
1452
1453static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1454 void *data)
1455{
1456 struct db_export *dbe = data;
1457
1458 return db_export__call_return(dbe, cr, parent_db_id);
1459}
1460
1461static void python_process_general_event(struct perf_sample *sample,
1462 struct evsel *evsel,
1463 struct addr_location *al,
1464 struct addr_location *addr_al)
1465{
1466 PyObject *handler, *t, *dict, *callchain;
1467 static char handler_name[64];
1468 unsigned n = 0;
1469
1470 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1471
1472 handler = get_handler(handler_name);
1473 if (!handler)
1474 return;
1475
1476 /*
1477 * Use the MAX_FIELDS to make the function expandable, though
1478 * currently there is only one item for the tuple.
1479 */
1480 t = PyTuple_New(MAX_FIELDS);
1481 if (!t)
1482 Py_FatalError("couldn't create Python tuple");
1483
1484 /* ip unwinding */
1485 callchain = python_process_callchain(sample, evsel, al);
1486 dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1487
1488 PyTuple_SetItem(t, n++, dict);
1489 if (_PyTuple_Resize(&t, n) == -1)
1490 Py_FatalError("error resizing Python tuple");
1491
1492 call_object(handler, t, handler_name);
1493
1494 Py_DECREF(t);
1495}
1496
1497static void python_process_event(union perf_event *event,
1498 struct perf_sample *sample,
1499 struct evsel *evsel,
1500 struct addr_location *al,
1501 struct addr_location *addr_al)
1502{
1503 struct tables *tables = &tables_global;
1504
1505 scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1506
1507 switch (evsel->core.attr.type) {
1508 case PERF_TYPE_TRACEPOINT:
1509 python_process_tracepoint(sample, evsel, al, addr_al);
1510 break;
1511 /* Reserve for future process_hw/sw/raw APIs */
1512 default:
1513 if (tables->db_export_mode)
1514 db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1515 else
1516 python_process_general_event(sample, evsel, al, addr_al);
1517 }
1518}
1519
1520static void python_process_throttle(union perf_event *event,
1521 struct perf_sample *sample,
1522 struct machine *machine)
1523{
1524 const char *handler_name;
1525 PyObject *handler, *t;
1526
1527 if (event->header.type == PERF_RECORD_THROTTLE)
1528 handler_name = "throttle";
1529 else
1530 handler_name = "unthrottle";
1531 handler = get_handler(handler_name);
1532 if (!handler)
1533 return;
1534
1535 t = tuple_new(6);
1536 if (!t)
1537 return;
1538
1539 tuple_set_u64(t, 0, event->throttle.time);
1540 tuple_set_u64(t, 1, event->throttle.id);
1541 tuple_set_u64(t, 2, event->throttle.stream_id);
1542 tuple_set_s32(t, 3, sample->cpu);
1543 tuple_set_s32(t, 4, sample->pid);
1544 tuple_set_s32(t, 5, sample->tid);
1545
1546 call_object(handler, t, handler_name);
1547
1548 Py_DECREF(t);
1549}
1550
1551static void python_do_process_switch(union perf_event *event,
1552 struct perf_sample *sample,
1553 struct machine *machine)
1554{
1555 const char *handler_name = "context_switch";
1556 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1557 bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1558 pid_t np_pid = -1, np_tid = -1;
1559 PyObject *handler, *t;
1560
1561 handler = get_handler(handler_name);
1562 if (!handler)
1563 return;
1564
1565 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1566 np_pid = event->context_switch.next_prev_pid;
1567 np_tid = event->context_switch.next_prev_tid;
1568 }
1569
1570 t = tuple_new(11);
1571 if (!t)
1572 return;
1573
1574 tuple_set_u64(t, 0, sample->time);
1575 tuple_set_s32(t, 1, sample->cpu);
1576 tuple_set_s32(t, 2, sample->pid);
1577 tuple_set_s32(t, 3, sample->tid);
1578 tuple_set_s32(t, 4, np_pid);
1579 tuple_set_s32(t, 5, np_tid);
1580 tuple_set_s32(t, 6, machine->pid);
1581 tuple_set_bool(t, 7, out);
1582 tuple_set_bool(t, 8, out_preempt);
1583 tuple_set_s32(t, 9, sample->machine_pid);
1584 tuple_set_s32(t, 10, sample->vcpu);
1585
1586 call_object(handler, t, handler_name);
1587
1588 Py_DECREF(t);
1589}
1590
1591static void python_process_switch(union perf_event *event,
1592 struct perf_sample *sample,
1593 struct machine *machine)
1594{
1595 struct tables *tables = &tables_global;
1596
1597 if (tables->db_export_mode)
1598 db_export__switch(&tables->dbe, event, sample, machine);
1599 else
1600 python_do_process_switch(event, sample, machine);
1601}
1602
1603static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1604 union perf_event *event)
1605{
1606 struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1607 u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1608 const char *handler_name = "auxtrace_error";
1609 unsigned long long tm = e->time;
1610 const char *msg = e->msg;
1611 PyObject *handler, *t;
1612
1613 handler = get_handler(handler_name);
1614 if (!handler)
1615 return;
1616
1617 if (!e->fmt) {
1618 tm = 0;
1619 msg = (const char *)&e->time;
1620 }
1621
1622 t = tuple_new(11);
1623
1624 tuple_set_u32(t, 0, e->type);
1625 tuple_set_u32(t, 1, e->code);
1626 tuple_set_s32(t, 2, e->cpu);
1627 tuple_set_s32(t, 3, e->pid);
1628 tuple_set_s32(t, 4, e->tid);
1629 tuple_set_u64(t, 5, e->ip);
1630 tuple_set_u64(t, 6, tm);
1631 tuple_set_string(t, 7, msg);
1632 tuple_set_u32(t, 8, cpumode);
1633 tuple_set_s32(t, 9, e->machine_pid);
1634 tuple_set_s32(t, 10, e->vcpu);
1635
1636 call_object(handler, t, handler_name);
1637
1638 Py_DECREF(t);
1639}
1640
1641static void get_handler_name(char *str, size_t size,
1642 struct evsel *evsel)
1643{
1644 char *p = str;
1645
1646 scnprintf(str, size, "stat__%s", evsel__name(evsel));
1647
1648 while ((p = strchr(p, ':'))) {
1649 *p = '_';
1650 p++;
1651 }
1652}
1653
1654static void
1655process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1656 struct perf_counts_values *count)
1657{
1658 PyObject *handler, *t;
1659 static char handler_name[256];
1660 int n = 0;
1661
1662 t = PyTuple_New(MAX_FIELDS);
1663 if (!t)
1664 Py_FatalError("couldn't create Python tuple");
1665
1666 get_handler_name(handler_name, sizeof(handler_name),
1667 counter);
1668
1669 handler = get_handler(handler_name);
1670 if (!handler) {
1671 pr_debug("can't find python handler %s\n", handler_name);
1672 return;
1673 }
1674
1675 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1676 PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1677
1678 tuple_set_u64(t, n++, tstamp);
1679 tuple_set_u64(t, n++, count->val);
1680 tuple_set_u64(t, n++, count->ena);
1681 tuple_set_u64(t, n++, count->run);
1682
1683 if (_PyTuple_Resize(&t, n) == -1)
1684 Py_FatalError("error resizing Python tuple");
1685
1686 call_object(handler, t, handler_name);
1687
1688 Py_DECREF(t);
1689}
1690
1691static void python_process_stat(struct perf_stat_config *config,
1692 struct evsel *counter, u64 tstamp)
1693{
1694 struct perf_thread_map *threads = counter->core.threads;
1695 struct perf_cpu_map *cpus = counter->core.cpus;
1696 int cpu, thread;
1697
1698 for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1699 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1700 process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
1701 perf_thread_map__pid(threads, thread), tstamp,
1702 perf_counts(counter->counts, cpu, thread));
1703 }
1704 }
1705}
1706
1707static 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
1733static 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
1758static 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
1777error:
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
1792static 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(&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(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(perf_db_export_calls);
1823 export_calls = !!ret;
1824 }
1825
1826 if (export_calls) {
1827 tables->dbe.crp =
1828 call_return_processor__new(python_process_call_return,
1829 &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(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#if PY_MAJOR_VERSION < 3
1890static void _free_command_line(const char **command_line, int num)
1891{
1892 free(command_line);
1893}
1894#else
1895static void _free_command_line(wchar_t **command_line, int num)
1896{
1897 int i;
1898 for (i = 0; i < num; i++)
1899 PyMem_RawFree(command_line[i]);
1900 free(command_line);
1901}
1902#endif
1903
1904
1905/*
1906 * Start trace script
1907 */
1908static int python_start_script(const char *script, int argc, const char **argv,
1909 struct perf_session *session)
1910{
1911 struct tables *tables = &tables_global;
1912#if PY_MAJOR_VERSION < 3
1913 const char **command_line;
1914#else
1915 wchar_t **command_line;
1916#endif
1917 /*
1918 * Use a non-const name variable to cope with python 2.6's
1919 * PyImport_AppendInittab prototype
1920 */
1921 char buf[PATH_MAX], name[19] = "perf_trace_context";
1922 int i, err = 0;
1923 FILE *fp;
1924
1925 scripting_context->session = session;
1926#if PY_MAJOR_VERSION < 3
1927 command_line = malloc((argc + 1) * sizeof(const char *));
1928 if (!command_line)
1929 return -1;
1930
1931 command_line[0] = script;
1932 for (i = 1; i < argc + 1; i++)
1933 command_line[i] = argv[i - 1];
1934 PyImport_AppendInittab(name, initperf_trace_context);
1935#else
1936 command_line = malloc((argc + 1) * sizeof(wchar_t *));
1937 if (!command_line)
1938 return -1;
1939
1940 command_line[0] = Py_DecodeLocale(script, NULL);
1941 for (i = 1; i < argc + 1; i++)
1942 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1943 PyImport_AppendInittab(name, PyInit_perf_trace_context);
1944#endif
1945 Py_Initialize();
1946
1947#if PY_MAJOR_VERSION < 3
1948 PySys_SetArgv(argc + 1, (char **)command_line);
1949#else
1950 PySys_SetArgv(argc + 1, command_line);
1951#endif
1952
1953 fp = fopen(script, "r");
1954 if (!fp) {
1955 sprintf(buf, "Can't open python script \"%s\"", script);
1956 perror(buf);
1957 err = -1;
1958 goto error;
1959 }
1960
1961 err = PyRun_SimpleFile(fp, script);
1962 if (err) {
1963 fprintf(stderr, "Error running python script %s\n", script);
1964 goto error;
1965 }
1966
1967 err = run_start_sub();
1968 if (err) {
1969 fprintf(stderr, "Error starting python script %s\n", script);
1970 goto error;
1971 }
1972
1973 set_table_handlers(tables);
1974
1975 if (tables->db_export_mode) {
1976 err = db_export__branch_types(&tables->dbe);
1977 if (err)
1978 goto error;
1979 }
1980
1981 _free_command_line(command_line, argc + 1);
1982
1983 return err;
1984error:
1985 Py_Finalize();
1986 _free_command_line(command_line, argc + 1);
1987
1988 return err;
1989}
1990
1991static int python_flush_script(void)
1992{
1993 return 0;
1994}
1995
1996/*
1997 * Stop trace script
1998 */
1999static int python_stop_script(void)
2000{
2001 struct tables *tables = &tables_global;
2002
2003 try_call_object("trace_end", NULL);
2004
2005 db_export__exit(&tables->dbe);
2006
2007 Py_XDECREF(main_dict);
2008 Py_XDECREF(main_module);
2009 Py_Finalize();
2010
2011 return 0;
2012}
2013
2014#ifdef HAVE_LIBTRACEEVENT
2015static int python_generate_script(struct tep_handle *pevent, const char *outfile)
2016{
2017 int i, not_first, count, nr_events;
2018 struct tep_event **all_events;
2019 struct tep_event *event = NULL;
2020 struct tep_format_field *f;
2021 char fname[PATH_MAX];
2022 FILE *ofp;
2023
2024 sprintf(fname, "%s.py", outfile);
2025 ofp = fopen(fname, "w");
2026 if (ofp == NULL) {
2027 fprintf(stderr, "couldn't open %s\n", fname);
2028 return -1;
2029 }
2030 fprintf(ofp, "# perf script event handlers, "
2031 "generated by perf script -g python\n");
2032
2033 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2034 " License version 2\n\n");
2035
2036 fprintf(ofp, "# The common_* event handler fields are the most useful "
2037 "fields common to\n");
2038
2039 fprintf(ofp, "# all events. They don't necessarily correspond to "
2040 "the 'common_*' fields\n");
2041
2042 fprintf(ofp, "# in the format files. Those fields not available as "
2043 "handler params can\n");
2044
2045 fprintf(ofp, "# be retrieved using Python functions of the form "
2046 "common_*(context).\n");
2047
2048 fprintf(ofp, "# See the perf-script-python Documentation for the list "
2049 "of available functions.\n\n");
2050
2051 fprintf(ofp, "from __future__ import print_function\n\n");
2052 fprintf(ofp, "import os\n");
2053 fprintf(ofp, "import sys\n\n");
2054
2055 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2056 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2057 fprintf(ofp, "\nfrom perf_trace_context import *\n");
2058 fprintf(ofp, "from Core import *\n\n\n");
2059
2060 fprintf(ofp, "def trace_begin():\n");
2061 fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2062
2063 fprintf(ofp, "def trace_end():\n");
2064 fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2065
2066 nr_events = tep_get_events_count(pevent);
2067 all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2068
2069 for (i = 0; all_events && i < nr_events; i++) {
2070 event = all_events[i];
2071 fprintf(ofp, "def %s__%s(", event->system, event->name);
2072 fprintf(ofp, "event_name, ");
2073 fprintf(ofp, "context, ");
2074 fprintf(ofp, "common_cpu,\n");
2075 fprintf(ofp, "\tcommon_secs, ");
2076 fprintf(ofp, "common_nsecs, ");
2077 fprintf(ofp, "common_pid, ");
2078 fprintf(ofp, "common_comm,\n\t");
2079 fprintf(ofp, "common_callchain, ");
2080
2081 not_first = 0;
2082 count = 0;
2083
2084 for (f = event->format.fields; f; f = f->next) {
2085 if (not_first++)
2086 fprintf(ofp, ", ");
2087 if (++count % 5 == 0)
2088 fprintf(ofp, "\n\t");
2089
2090 fprintf(ofp, "%s", f->name);
2091 }
2092 if (not_first++)
2093 fprintf(ofp, ", ");
2094 if (++count % 5 == 0)
2095 fprintf(ofp, "\n\t\t");
2096 fprintf(ofp, "perf_sample_dict");
2097
2098 fprintf(ofp, "):\n");
2099
2100 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2101 "common_secs, common_nsecs,\n\t\t\t"
2102 "common_pid, common_comm)\n\n");
2103
2104 fprintf(ofp, "\t\tprint(\"");
2105
2106 not_first = 0;
2107 count = 0;
2108
2109 for (f = event->format.fields; f; f = f->next) {
2110 if (not_first++)
2111 fprintf(ofp, ", ");
2112 if (count && count % 3 == 0) {
2113 fprintf(ofp, "\" \\\n\t\t\"");
2114 }
2115 count++;
2116
2117 fprintf(ofp, "%s=", f->name);
2118 if (f->flags & TEP_FIELD_IS_STRING ||
2119 f->flags & TEP_FIELD_IS_FLAG ||
2120 f->flags & TEP_FIELD_IS_ARRAY ||
2121 f->flags & TEP_FIELD_IS_SYMBOLIC)
2122 fprintf(ofp, "%%s");
2123 else if (f->flags & TEP_FIELD_IS_SIGNED)
2124 fprintf(ofp, "%%d");
2125 else
2126 fprintf(ofp, "%%u");
2127 }
2128
2129 fprintf(ofp, "\" %% \\\n\t\t(");
2130
2131 not_first = 0;
2132 count = 0;
2133
2134 for (f = event->format.fields; f; f = f->next) {
2135 if (not_first++)
2136 fprintf(ofp, ", ");
2137
2138 if (++count % 5 == 0)
2139 fprintf(ofp, "\n\t\t");
2140
2141 if (f->flags & TEP_FIELD_IS_FLAG) {
2142 if ((count - 1) % 5 != 0) {
2143 fprintf(ofp, "\n\t\t");
2144 count = 4;
2145 }
2146 fprintf(ofp, "flag_str(\"");
2147 fprintf(ofp, "%s__%s\", ", event->system,
2148 event->name);
2149 fprintf(ofp, "\"%s\", %s)", f->name,
2150 f->name);
2151 } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2152 if ((count - 1) % 5 != 0) {
2153 fprintf(ofp, "\n\t\t");
2154 count = 4;
2155 }
2156 fprintf(ofp, "symbol_str(\"");
2157 fprintf(ofp, "%s__%s\", ", event->system,
2158 event->name);
2159 fprintf(ofp, "\"%s\", %s)", f->name,
2160 f->name);
2161 } else
2162 fprintf(ofp, "%s", f->name);
2163 }
2164
2165 fprintf(ofp, "))\n\n");
2166
2167 fprintf(ofp, "\t\tprint('Sample: {'+"
2168 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2169
2170 fprintf(ofp, "\t\tfor node in common_callchain:");
2171 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2172 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2173 fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2174 fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2175 fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso']) if 'dso' in node else \"\",");
2176 fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2177 fprintf(ofp, "\n\t\t\telse:");
2178 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2179 fprintf(ofp, "\t\tprint()\n\n");
2180
2181 }
2182
2183 fprintf(ofp, "def trace_unhandled(event_name, context, "
2184 "event_fields_dict, perf_sample_dict):\n");
2185
2186 fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2187 fprintf(ofp, "\t\tprint('Sample: {'+"
2188 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2189
2190 fprintf(ofp, "def print_header("
2191 "event_name, cpu, secs, nsecs, pid, comm):\n"
2192 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2193 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2194
2195 fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2196 "\treturn delimiter.join"
2197 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2198
2199 fclose(ofp);
2200
2201 fprintf(stderr, "generated Python script: %s\n", fname);
2202
2203 return 0;
2204}
2205#else
2206static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2207 const char *outfile __maybe_unused)
2208{
2209 fprintf(stderr, "Generating Python perf-script is not supported."
2210 " Install libtraceevent and rebuild perf to enable it.\n"
2211 "For example:\n # apt install libtraceevent-dev (ubuntu)"
2212 "\n # yum install libtraceevent-devel (Fedora)"
2213 "\n etc.\n");
2214 return -1;
2215}
2216#endif
2217
2218struct scripting_ops python_scripting_ops = {
2219 .name = "Python",
2220 .dirname = "python",
2221 .start_script = python_start_script,
2222 .flush_script = python_flush_script,
2223 .stop_script = python_stop_script,
2224 .process_event = python_process_event,
2225 .process_switch = python_process_switch,
2226 .process_auxtrace_error = python_process_auxtrace_error,
2227 .process_stat = python_process_stat,
2228 .process_stat_interval = python_process_stat_interval,
2229 .process_throttle = python_process_throttle,
2230 .generate_script = python_generate_script,
2231};