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mmc: bcm2835: Fix DMA channel leak on probe error
[linux/fpc-iii.git] / tools / perf / util / scripting-engines / trace-event-python.c
blob05d95de14e20153d2e4153ae4f27b1920360d731
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
34 #include "../../perf.h"
35 #include "../debug.h"
36 #include "../callchain.h"
37 #include "../evsel.h"
38 #include "../util.h"
39 #include "../event.h"
40 #include "../thread.h"
41 #include "../comm.h"
42 #include "../machine.h"
43 #include "../db-export.h"
44 #include "../thread-stack.h"
45 #include "../trace-event.h"
46 #include "../call-path.h"
47 #include "thread_map.h"
48 #include "cpumap.h"
49 #include "print_binary.h"
50 #include "stat.h"
51 #include "mem-events.h"
52
53 #if PY_MAJOR_VERSION < 3
54 #define _PyUnicode_FromString(arg) \
55 PyString_FromString(arg)
56 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
57 PyString_FromStringAndSize((arg1), (arg2))
58 #define _PyBytes_FromStringAndSize(arg1, arg2) \
59 PyString_FromStringAndSize((arg1), (arg2))
60 #define _PyLong_FromLong(arg) \
61 PyInt_FromLong(arg)
62 #define _PyLong_AsLong(arg) \
63 PyInt_AsLong(arg)
64 #define _PyCapsule_New(arg1, arg2, arg3) \
65 PyCObject_FromVoidPtr((arg1), (arg2))
66
67 PyMODINIT_FUNC initperf_trace_context(void);
68 #else
69 #define _PyUnicode_FromString(arg) \
70 PyUnicode_FromString(arg)
71 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
72 PyUnicode_FromStringAndSize((arg1), (arg2))
73 #define _PyBytes_FromStringAndSize(arg1, arg2) \
74 PyBytes_FromStringAndSize((arg1), (arg2))
75 #define _PyLong_FromLong(arg) \
76 PyLong_FromLong(arg)
77 #define _PyLong_AsLong(arg) \
78 PyLong_AsLong(arg)
79 #define _PyCapsule_New(arg1, arg2, arg3) \
80 PyCapsule_New((arg1), (arg2), (arg3))
81
82 PyMODINIT_FUNC PyInit_perf_trace_context(void);
83 #endif
84
85 #define TRACE_EVENT_TYPE_MAX \
86 ((1 << (sizeof(unsigned short) * 8)) - 1)
87
88 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
89
90 #define MAX_FIELDS 64
91 #define N_COMMON_FIELDS 7
92
93 extern struct scripting_context *scripting_context;
94
95 static char *cur_field_name;
96 static int zero_flag_atom;
97
98 static PyObject *main_module, *main_dict;
99
100 struct tables {
101 struct db_export dbe;
102 PyObject *evsel_handler;
103 PyObject *machine_handler;
104 PyObject *thread_handler;
105 PyObject *comm_handler;
106 PyObject *comm_thread_handler;
107 PyObject *dso_handler;
108 PyObject *symbol_handler;
109 PyObject *branch_type_handler;
110 PyObject *sample_handler;
111 PyObject *call_path_handler;
112 PyObject *call_return_handler;
113 bool db_export_mode;
114 };
115
116 static struct tables tables_global;
117
118 static void handler_call_die(const char *handler_name) __noreturn;
119 static void handler_call_die(const char *handler_name)
120 {
121 PyErr_Print();
122 Py_FatalError("problem in Python trace event handler");
123 // Py_FatalError does not return
124 // but we have to make the compiler happy
125 abort();
126 }
127
128 /*
129 * Insert val into into the dictionary and decrement the reference counter.
130 * This is necessary for dictionaries since PyDict_SetItemString() does not
131 * steal a reference, as opposed to PyTuple_SetItem().
132 */
133 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
134 {
135 PyDict_SetItemString(dict, key, val);
136 Py_DECREF(val);
137 }
138
139 static PyObject *get_handler(const char *handler_name)
140 {
141 PyObject *handler;
142
143 handler = PyDict_GetItemString(main_dict, handler_name);
144 if (handler && !PyCallable_Check(handler))
145 return NULL;
146 return handler;
147 }
148
149 static int get_argument_count(PyObject *handler)
150 {
151 int arg_count = 0;
152
153 /*
154 * The attribute for the code object is func_code in Python 2,
155 * whereas it is __code__ in Python 3.0+.
156 */
157 PyObject *code_obj = PyObject_GetAttrString(handler,
158 "func_code");
159 if (PyErr_Occurred()) {
160 PyErr_Clear();
161 code_obj = PyObject_GetAttrString(handler,
162 "__code__");
163 }
164 PyErr_Clear();
165 if (code_obj) {
166 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
167 "co_argcount");
168 if (arg_count_obj) {
169 arg_count = (int) _PyLong_AsLong(arg_count_obj);
170 Py_DECREF(arg_count_obj);
171 }
172 Py_DECREF(code_obj);
173 }
174 return arg_count;
175 }
176
177 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
178 {
179 PyObject *retval;
180
181 retval = PyObject_CallObject(handler, args);
182 if (retval == NULL)
183 handler_call_die(die_msg);
184 Py_DECREF(retval);
185 }
186
187 static void try_call_object(const char *handler_name, PyObject *args)
188 {
189 PyObject *handler;
190
191 handler = get_handler(handler_name);
192 if (handler)
193 call_object(handler, args, handler_name);
194 }
195
196 static void define_value(enum print_arg_type field_type,
197 const char *ev_name,
198 const char *field_name,
199 const char *field_value,
200 const char *field_str)
201 {
202 const char *handler_name = "define_flag_value";
203 PyObject *t;
204 unsigned long long value;
205 unsigned n = 0;
206
207 if (field_type == PRINT_SYMBOL)
208 handler_name = "define_symbolic_value";
209
210 t = PyTuple_New(4);
211 if (!t)
212 Py_FatalError("couldn't create Python tuple");
213
214 value = eval_flag(field_value);
215
216 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
217 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
218 PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
219 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
220
221 try_call_object(handler_name, t);
222
223 Py_DECREF(t);
224 }
225
226 static void define_values(enum print_arg_type field_type,
227 struct print_flag_sym *field,
228 const char *ev_name,
229 const char *field_name)
230 {
231 define_value(field_type, ev_name, field_name, field->value,
232 field->str);
233
234 if (field->next)
235 define_values(field_type, field->next, ev_name, field_name);
236 }
237
238 static void define_field(enum print_arg_type field_type,
239 const char *ev_name,
240 const char *field_name,
241 const char *delim)
242 {
243 const char *handler_name = "define_flag_field";
244 PyObject *t;
245 unsigned n = 0;
246
247 if (field_type == PRINT_SYMBOL)
248 handler_name = "define_symbolic_field";
249
250 if (field_type == PRINT_FLAGS)
251 t = PyTuple_New(3);
252 else
253 t = PyTuple_New(2);
254 if (!t)
255 Py_FatalError("couldn't create Python tuple");
256
257 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
258 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
259 if (field_type == PRINT_FLAGS)
260 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
261
262 try_call_object(handler_name, t);
263
264 Py_DECREF(t);
265 }
266
267 static void define_event_symbols(struct event_format *event,
268 const char *ev_name,
269 struct print_arg *args)
270 {
271 if (args == NULL)
272 return;
273
274 switch (args->type) {
275 case PRINT_NULL:
276 break;
277 case PRINT_ATOM:
278 define_value(PRINT_FLAGS, ev_name, cur_field_name, "0",
279 args->atom.atom);
280 zero_flag_atom = 0;
281 break;
282 case PRINT_FIELD:
283 free(cur_field_name);
284 cur_field_name = strdup(args->field.name);
285 break;
286 case PRINT_FLAGS:
287 define_event_symbols(event, ev_name, args->flags.field);
288 define_field(PRINT_FLAGS, ev_name, cur_field_name,
289 args->flags.delim);
290 define_values(PRINT_FLAGS, args->flags.flags, ev_name,
291 cur_field_name);
292 break;
293 case PRINT_SYMBOL:
294 define_event_symbols(event, ev_name, args->symbol.field);
295 define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL);
296 define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
297 cur_field_name);
298 break;
299 case PRINT_HEX:
300 case PRINT_HEX_STR:
301 define_event_symbols(event, ev_name, args->hex.field);
302 define_event_symbols(event, ev_name, args->hex.size);
303 break;
304 case PRINT_INT_ARRAY:
305 define_event_symbols(event, ev_name, args->int_array.field);
306 define_event_symbols(event, ev_name, args->int_array.count);
307 define_event_symbols(event, ev_name, args->int_array.el_size);
308 break;
309 case PRINT_STRING:
310 break;
311 case PRINT_TYPE:
312 define_event_symbols(event, ev_name, args->typecast.item);
313 break;
314 case PRINT_OP:
315 if (strcmp(args->op.op, ":") == 0)
316 zero_flag_atom = 1;
317 define_event_symbols(event, ev_name, args->op.left);
318 define_event_symbols(event, ev_name, args->op.right);
319 break;
320 default:
321 /* gcc warns for these? */
322 case PRINT_BSTRING:
323 case PRINT_DYNAMIC_ARRAY:
324 case PRINT_DYNAMIC_ARRAY_LEN:
325 case PRINT_FUNC:
326 case PRINT_BITMASK:
327 /* we should warn... */
328 return;
329 }
330
331 if (args->next)
332 define_event_symbols(event, ev_name, args->next);
333 }
334
335 static PyObject *get_field_numeric_entry(struct event_format *event,
336 struct format_field *field, void *data)
337 {
338 bool is_array = field->flags & FIELD_IS_ARRAY;
339 PyObject *obj = NULL, *list = NULL;
340 unsigned long long val;
341 unsigned int item_size, n_items, i;
342
343 if (is_array) {
344 list = PyList_New(field->arraylen);
345 item_size = field->size / field->arraylen;
346 n_items = field->arraylen;
347 } else {
348 item_size = field->size;
349 n_items = 1;
350 }
351
352 for (i = 0; i < n_items; i++) {
353
354 val = read_size(event, data + field->offset + i * item_size,
355 item_size);
356 if (field->flags & FIELD_IS_SIGNED) {
357 if ((long long)val >= LONG_MIN &&
358 (long long)val <= LONG_MAX)
359 obj = _PyLong_FromLong(val);
360 else
361 obj = PyLong_FromLongLong(val);
362 } else {
363 if (val <= LONG_MAX)
364 obj = _PyLong_FromLong(val);
365 else
366 obj = PyLong_FromUnsignedLongLong(val);
367 }
368 if (is_array)
369 PyList_SET_ITEM(list, i, obj);
370 }
371 if (is_array)
372 obj = list;
373 return obj;
374 }
375
376 static const char *get_dsoname(struct map *map)
377 {
378 const char *dsoname = "[unknown]";
379
380 if (map && map->dso) {
381 if (symbol_conf.show_kernel_path && map->dso->long_name)
382 dsoname = map->dso->long_name;
383 else
384 dsoname = map->dso->name;
385 }
386
387 return dsoname;
388 }
389
390 static PyObject *python_process_callchain(struct perf_sample *sample,
391 struct perf_evsel *evsel,
392 struct addr_location *al)
393 {
394 PyObject *pylist;
395
396 pylist = PyList_New(0);
397 if (!pylist)
398 Py_FatalError("couldn't create Python list");
399
400 if (!symbol_conf.use_callchain || !sample->callchain)
401 goto exit;
402
403 if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
404 sample, NULL, NULL,
405 scripting_max_stack) != 0) {
406 pr_err("Failed to resolve callchain. Skipping\n");
407 goto exit;
408 }
409 callchain_cursor_commit(&callchain_cursor);
410
411
412 while (1) {
413 PyObject *pyelem;
414 struct callchain_cursor_node *node;
415 node = callchain_cursor_current(&callchain_cursor);
416 if (!node)
417 break;
418
419 pyelem = PyDict_New();
420 if (!pyelem)
421 Py_FatalError("couldn't create Python dictionary");
422
423
424 pydict_set_item_string_decref(pyelem, "ip",
425 PyLong_FromUnsignedLongLong(node->ip));
426
427 if (node->sym) {
428 PyObject *pysym = PyDict_New();
429 if (!pysym)
430 Py_FatalError("couldn't create Python dictionary");
431 pydict_set_item_string_decref(pysym, "start",
432 PyLong_FromUnsignedLongLong(node->sym->start));
433 pydict_set_item_string_decref(pysym, "end",
434 PyLong_FromUnsignedLongLong(node->sym->end));
435 pydict_set_item_string_decref(pysym, "binding",
436 _PyLong_FromLong(node->sym->binding));
437 pydict_set_item_string_decref(pysym, "name",
438 _PyUnicode_FromStringAndSize(node->sym->name,
439 node->sym->namelen));
440 pydict_set_item_string_decref(pyelem, "sym", pysym);
441 }
442
443 if (node->map) {
444 const char *dsoname = get_dsoname(node->map);
445
446 pydict_set_item_string_decref(pyelem, "dso",
447 _PyUnicode_FromString(dsoname));
448 }
449
450 callchain_cursor_advance(&callchain_cursor);
451 PyList_Append(pylist, pyelem);
452 Py_DECREF(pyelem);
453 }
454
455 exit:
456 return pylist;
457 }
458
459 static PyObject *python_process_brstack(struct perf_sample *sample,
460 struct thread *thread)
461 {
462 struct branch_stack *br = sample->branch_stack;
463 PyObject *pylist;
464 u64 i;
465
466 pylist = PyList_New(0);
467 if (!pylist)
468 Py_FatalError("couldn't create Python list");
469
470 if (!(br && br->nr))
471 goto exit;
472
473 for (i = 0; i < br->nr; i++) {
474 PyObject *pyelem;
475 struct addr_location al;
476 const char *dsoname;
477
478 pyelem = PyDict_New();
479 if (!pyelem)
480 Py_FatalError("couldn't create Python dictionary");
481
482 pydict_set_item_string_decref(pyelem, "from",
483 PyLong_FromUnsignedLongLong(br->entries[i].from));
484 pydict_set_item_string_decref(pyelem, "to",
485 PyLong_FromUnsignedLongLong(br->entries[i].to));
486 pydict_set_item_string_decref(pyelem, "mispred",
487 PyBool_FromLong(br->entries[i].flags.mispred));
488 pydict_set_item_string_decref(pyelem, "predicted",
489 PyBool_FromLong(br->entries[i].flags.predicted));
490 pydict_set_item_string_decref(pyelem, "in_tx",
491 PyBool_FromLong(br->entries[i].flags.in_tx));
492 pydict_set_item_string_decref(pyelem, "abort",
493 PyBool_FromLong(br->entries[i].flags.abort));
494 pydict_set_item_string_decref(pyelem, "cycles",
495 PyLong_FromUnsignedLongLong(br->entries[i].flags.cycles));
496
497 thread__find_map_fb(thread, sample->cpumode,
498 br->entries[i].from, &al);
499 dsoname = get_dsoname(al.map);
500 pydict_set_item_string_decref(pyelem, "from_dsoname",
501 _PyUnicode_FromString(dsoname));
502
503 thread__find_map_fb(thread, sample->cpumode,
504 br->entries[i].to, &al);
505 dsoname = get_dsoname(al.map);
506 pydict_set_item_string_decref(pyelem, "to_dsoname",
507 _PyUnicode_FromString(dsoname));
508
509 PyList_Append(pylist, pyelem);
510 Py_DECREF(pyelem);
511 }
512
513 exit:
514 return pylist;
515 }
516
517 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
518 {
519 unsigned long offset;
520
521 if (al->addr < sym->end)
522 offset = al->addr - sym->start;
523 else
524 offset = al->addr - al->map->start - sym->start;
525
526 return offset;
527 }
528
529 static int get_symoff(struct symbol *sym, struct addr_location *al,
530 bool print_off, char *bf, int size)
531 {
532 unsigned long offset;
533
534 if (!sym || !sym->name[0])
535 return scnprintf(bf, size, "%s", "[unknown]");
536
537 if (!print_off)
538 return scnprintf(bf, size, "%s", sym->name);
539
540 offset = get_offset(sym, al);
541
542 return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
543 }
544
545 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
546 {
547 if (!flags->mispred && !flags->predicted)
548 return scnprintf(bf, size, "%s", "-");
549
550 if (flags->mispred)
551 return scnprintf(bf, size, "%s", "M");
552
553 return scnprintf(bf, size, "%s", "P");
554 }
555
556 static PyObject *python_process_brstacksym(struct perf_sample *sample,
557 struct thread *thread)
558 {
559 struct branch_stack *br = sample->branch_stack;
560 PyObject *pylist;
561 u64 i;
562 char bf[512];
563 struct addr_location al;
564
565 pylist = PyList_New(0);
566 if (!pylist)
567 Py_FatalError("couldn't create Python list");
568
569 if (!(br && br->nr))
570 goto exit;
571
572 for (i = 0; i < br->nr; i++) {
573 PyObject *pyelem;
574
575 pyelem = PyDict_New();
576 if (!pyelem)
577 Py_FatalError("couldn't create Python dictionary");
578
579 thread__find_symbol_fb(thread, sample->cpumode,
580 br->entries[i].from, &al);
581 get_symoff(al.sym, &al, true, bf, sizeof(bf));
582 pydict_set_item_string_decref(pyelem, "from",
583 _PyUnicode_FromString(bf));
584
585 thread__find_symbol_fb(thread, sample->cpumode,
586 br->entries[i].to, &al);
587 get_symoff(al.sym, &al, true, bf, sizeof(bf));
588 pydict_set_item_string_decref(pyelem, "to",
589 _PyUnicode_FromString(bf));
590
591 get_br_mspred(&br->entries[i].flags, bf, sizeof(bf));
592 pydict_set_item_string_decref(pyelem, "pred",
593 _PyUnicode_FromString(bf));
594
595 if (br->entries[i].flags.in_tx) {
596 pydict_set_item_string_decref(pyelem, "in_tx",
597 _PyUnicode_FromString("X"));
598 } else {
599 pydict_set_item_string_decref(pyelem, "in_tx",
600 _PyUnicode_FromString("-"));
601 }
602
603 if (br->entries[i].flags.abort) {
604 pydict_set_item_string_decref(pyelem, "abort",
605 _PyUnicode_FromString("A"));
606 } else {
607 pydict_set_item_string_decref(pyelem, "abort",
608 _PyUnicode_FromString("-"));
609 }
610
611 PyList_Append(pylist, pyelem);
612 Py_DECREF(pyelem);
613 }
614
615 exit:
616 return pylist;
617 }
618
619 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value)
620 {
621 PyObject *t;
622
623 t = PyTuple_New(2);
624 if (!t)
625 Py_FatalError("couldn't create Python tuple");
626 PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
627 PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
628 return t;
629 }
630
631 static void set_sample_read_in_dict(PyObject *dict_sample,
632 struct perf_sample *sample,
633 struct perf_evsel *evsel)
634 {
635 u64 read_format = evsel->attr.read_format;
636 PyObject *values;
637 unsigned int i;
638
639 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
640 pydict_set_item_string_decref(dict_sample, "time_enabled",
641 PyLong_FromUnsignedLongLong(sample->read.time_enabled));
642 }
643
644 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
645 pydict_set_item_string_decref(dict_sample, "time_running",
646 PyLong_FromUnsignedLongLong(sample->read.time_running));
647 }
648
649 if (read_format & PERF_FORMAT_GROUP)
650 values = PyList_New(sample->read.group.nr);
651 else
652 values = PyList_New(1);
653
654 if (!values)
655 Py_FatalError("couldn't create Python list");
656
657 if (read_format & PERF_FORMAT_GROUP) {
658 for (i = 0; i < sample->read.group.nr; i++) {
659 PyObject *t = get_sample_value_as_tuple(&sample->read.group.values[i]);
660 PyList_SET_ITEM(values, i, t);
661 }
662 } else {
663 PyObject *t = get_sample_value_as_tuple(&sample->read.one);
664 PyList_SET_ITEM(values, 0, t);
665 }
666 pydict_set_item_string_decref(dict_sample, "values", values);
667 }
668
669 static void set_sample_datasrc_in_dict(PyObject *dict,
670 struct perf_sample *sample)
671 {
672 struct mem_info mi = { .data_src.val = sample->data_src };
673 char decode[100];
674
675 pydict_set_item_string_decref(dict, "datasrc",
676 PyLong_FromUnsignedLongLong(sample->data_src));
677
678 perf_script__meminfo_scnprintf(decode, 100, &mi);
679
680 pydict_set_item_string_decref(dict, "datasrc_decode",
681 _PyUnicode_FromString(decode));
682 }
683
684 static int regs_map(struct regs_dump *regs, uint64_t mask, char *bf, int size)
685 {
686 unsigned int i = 0, r;
687 int printed = 0;
688
689 bf[0] = 0;
690
691 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
692 u64 val = regs->regs[i++];
693
694 printed += scnprintf(bf + printed, size - printed,
695 "%5s:0x%" PRIx64 " ",
696 perf_reg_name(r), val);
697 }
698
699 return printed;
700 }
701
702 static void set_regs_in_dict(PyObject *dict,
703 struct perf_sample *sample,
704 struct perf_evsel *evsel)
705 {
706 struct perf_event_attr *attr = &evsel->attr;
707 char bf[512];
708
709 regs_map(&sample->intr_regs, attr->sample_regs_intr, bf, sizeof(bf));
710
711 pydict_set_item_string_decref(dict, "iregs",
712 _PyUnicode_FromString(bf));
713
714 regs_map(&sample->user_regs, attr->sample_regs_user, bf, sizeof(bf));
715
716 pydict_set_item_string_decref(dict, "uregs",
717 _PyUnicode_FromString(bf));
718 }
719
720 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
721 struct perf_evsel *evsel,
722 struct addr_location *al,
723 PyObject *callchain)
724 {
725 PyObject *dict, *dict_sample, *brstack, *brstacksym;
726
727 dict = PyDict_New();
728 if (!dict)
729 Py_FatalError("couldn't create Python dictionary");
730
731 dict_sample = PyDict_New();
732 if (!dict_sample)
733 Py_FatalError("couldn't create Python dictionary");
734
735 pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(perf_evsel__name(evsel)));
736 pydict_set_item_string_decref(dict, "attr", _PyUnicode_FromStringAndSize(
737 (const char *)&evsel->attr, sizeof(evsel->attr)));
738
739 pydict_set_item_string_decref(dict_sample, "pid",
740 _PyLong_FromLong(sample->pid));
741 pydict_set_item_string_decref(dict_sample, "tid",
742 _PyLong_FromLong(sample->tid));
743 pydict_set_item_string_decref(dict_sample, "cpu",
744 _PyLong_FromLong(sample->cpu));
745 pydict_set_item_string_decref(dict_sample, "ip",
746 PyLong_FromUnsignedLongLong(sample->ip));
747 pydict_set_item_string_decref(dict_sample, "time",
748 PyLong_FromUnsignedLongLong(sample->time));
749 pydict_set_item_string_decref(dict_sample, "period",
750 PyLong_FromUnsignedLongLong(sample->period));
751 pydict_set_item_string_decref(dict_sample, "phys_addr",
752 PyLong_FromUnsignedLongLong(sample->phys_addr));
753 pydict_set_item_string_decref(dict_sample, "addr",
754 PyLong_FromUnsignedLongLong(sample->addr));
755 set_sample_read_in_dict(dict_sample, sample, evsel);
756 pydict_set_item_string_decref(dict_sample, "weight",
757 PyLong_FromUnsignedLongLong(sample->weight));
758 pydict_set_item_string_decref(dict_sample, "transaction",
759 PyLong_FromUnsignedLongLong(sample->transaction));
760 set_sample_datasrc_in_dict(dict_sample, sample);
761 pydict_set_item_string_decref(dict, "sample", dict_sample);
762
763 pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
764 (const char *)sample->raw_data, sample->raw_size));
765 pydict_set_item_string_decref(dict, "comm",
766 _PyUnicode_FromString(thread__comm_str(al->thread)));
767 if (al->map) {
768 pydict_set_item_string_decref(dict, "dso",
769 _PyUnicode_FromString(al->map->dso->name));
770 }
771 if (al->sym) {
772 pydict_set_item_string_decref(dict, "symbol",
773 _PyUnicode_FromString(al->sym->name));
774 }
775
776 pydict_set_item_string_decref(dict, "callchain", callchain);
777
778 brstack = python_process_brstack(sample, al->thread);
779 pydict_set_item_string_decref(dict, "brstack", brstack);
780
781 brstacksym = python_process_brstacksym(sample, al->thread);
782 pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
783
784 set_regs_in_dict(dict, sample, evsel);
785
786 return dict;
787 }
788
789 static void python_process_tracepoint(struct perf_sample *sample,
790 struct perf_evsel *evsel,
791 struct addr_location *al)
792 {
793 struct event_format *event = evsel->tp_format;
794 PyObject *handler, *context, *t, *obj = NULL, *callchain;
795 PyObject *dict = NULL, *all_entries_dict = NULL;
796 static char handler_name[256];
797 struct format_field *field;
798 unsigned long s, ns;
799 unsigned n = 0;
800 int pid;
801 int cpu = sample->cpu;
802 void *data = sample->raw_data;
803 unsigned long long nsecs = sample->time;
804 const char *comm = thread__comm_str(al->thread);
805 const char *default_handler_name = "trace_unhandled";
806
807 if (!event) {
808 snprintf(handler_name, sizeof(handler_name),
809 "ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
810 Py_FatalError(handler_name);
811 }
812
813 pid = raw_field_value(event, "common_pid", data);
814
815 sprintf(handler_name, "%s__%s", event->system, event->name);
816
817 if (!test_and_set_bit(event->id, events_defined))
818 define_event_symbols(event, handler_name, event->print_fmt.args);
819
820 handler = get_handler(handler_name);
821 if (!handler) {
822 handler = get_handler(default_handler_name);
823 if (!handler)
824 return;
825 dict = PyDict_New();
826 if (!dict)
827 Py_FatalError("couldn't create Python dict");
828 }
829
830 t = PyTuple_New(MAX_FIELDS);
831 if (!t)
832 Py_FatalError("couldn't create Python tuple");
833
834
835 s = nsecs / NSEC_PER_SEC;
836 ns = nsecs - s * NSEC_PER_SEC;
837
838 scripting_context->event_data = data;
839 scripting_context->pevent = evsel->tp_format->pevent;
840
841 context = _PyCapsule_New(scripting_context, NULL, NULL);
842
843 PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
844 PyTuple_SetItem(t, n++, context);
845
846 /* ip unwinding */
847 callchain = python_process_callchain(sample, evsel, al);
848 /* Need an additional reference for the perf_sample dict */
849 Py_INCREF(callchain);
850
851 if (!dict) {
852 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
853 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
854 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
855 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
856 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
857 PyTuple_SetItem(t, n++, callchain);
858 } else {
859 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
860 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
861 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
862 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
863 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
864 pydict_set_item_string_decref(dict, "common_callchain", callchain);
865 }
866 for (field = event->format.fields; field; field = field->next) {
867 unsigned int offset, len;
868 unsigned long long val;
869
870 if (field->flags & FIELD_IS_ARRAY) {
871 offset = field->offset;
872 len = field->size;
873 if (field->flags & FIELD_IS_DYNAMIC) {
874 val = tep_read_number(scripting_context->pevent,
875 data + offset, len);
876 offset = val;
877 len = offset >> 16;
878 offset &= 0xffff;
879 }
880 if (field->flags & FIELD_IS_STRING &&
881 is_printable_array(data + offset, len)) {
882 obj = _PyUnicode_FromString((char *) data + offset);
883 } else {
884 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
885 field->flags &= ~FIELD_IS_STRING;
886 }
887 } else { /* FIELD_IS_NUMERIC */
888 obj = get_field_numeric_entry(event, field, data);
889 }
890 if (!dict)
891 PyTuple_SetItem(t, n++, obj);
892 else
893 pydict_set_item_string_decref(dict, field->name, obj);
894
895 }
896
897 if (dict)
898 PyTuple_SetItem(t, n++, dict);
899
900 if (get_argument_count(handler) == (int) n + 1) {
901 all_entries_dict = get_perf_sample_dict(sample, evsel, al,
902 callchain);
903 PyTuple_SetItem(t, n++, all_entries_dict);
904 } else {
905 Py_DECREF(callchain);
906 }
907
908 if (_PyTuple_Resize(&t, n) == -1)
909 Py_FatalError("error resizing Python tuple");
910
911 if (!dict)
912 call_object(handler, t, handler_name);
913 else
914 call_object(handler, t, default_handler_name);
915
916 Py_DECREF(t);
917 }
918
919 static PyObject *tuple_new(unsigned int sz)
920 {
921 PyObject *t;
922
923 t = PyTuple_New(sz);
924 if (!t)
925 Py_FatalError("couldn't create Python tuple");
926 return t;
927 }
928
929 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
930 {
931 #if BITS_PER_LONG == 64
932 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
933 #endif
934 #if BITS_PER_LONG == 32
935 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
936 #endif
937 }
938
939 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
940 {
941 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
942 }
943
944 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
945 {
946 return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
947 }
948
949 static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
950 {
951 struct tables *tables = container_of(dbe, struct tables, dbe);
952 PyObject *t;
953
954 t = tuple_new(2);
955
956 tuple_set_u64(t, 0, evsel->db_id);
957 tuple_set_string(t, 1, perf_evsel__name(evsel));
958
959 call_object(tables->evsel_handler, t, "evsel_table");
960
961 Py_DECREF(t);
962
963 return 0;
964 }
965
966 static int python_export_machine(struct db_export *dbe,
967 struct machine *machine)
968 {
969 struct tables *tables = container_of(dbe, struct tables, dbe);
970 PyObject *t;
971
972 t = tuple_new(3);
973
974 tuple_set_u64(t, 0, machine->db_id);
975 tuple_set_s32(t, 1, machine->pid);
976 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
977
978 call_object(tables->machine_handler, t, "machine_table");
979
980 Py_DECREF(t);
981
982 return 0;
983 }
984
985 static int python_export_thread(struct db_export *dbe, struct thread *thread,
986 u64 main_thread_db_id, struct machine *machine)
987 {
988 struct tables *tables = container_of(dbe, struct tables, dbe);
989 PyObject *t;
990
991 t = tuple_new(5);
992
993 tuple_set_u64(t, 0, thread->db_id);
994 tuple_set_u64(t, 1, machine->db_id);
995 tuple_set_u64(t, 2, main_thread_db_id);
996 tuple_set_s32(t, 3, thread->pid_);
997 tuple_set_s32(t, 4, thread->tid);
998
999 call_object(tables->thread_handler, t, "thread_table");
1000
1001 Py_DECREF(t);
1002
1003 return 0;
1004 }
1005
1006 static int python_export_comm(struct db_export *dbe, struct comm *comm)
1007 {
1008 struct tables *tables = container_of(dbe, struct tables, dbe);
1009 PyObject *t;
1010
1011 t = tuple_new(2);
1012
1013 tuple_set_u64(t, 0, comm->db_id);
1014 tuple_set_string(t, 1, comm__str(comm));
1015
1016 call_object(tables->comm_handler, t, "comm_table");
1017
1018 Py_DECREF(t);
1019
1020 return 0;
1021 }
1022
1023 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1024 struct comm *comm, struct thread *thread)
1025 {
1026 struct tables *tables = container_of(dbe, struct tables, dbe);
1027 PyObject *t;
1028
1029 t = tuple_new(3);
1030
1031 tuple_set_u64(t, 0, db_id);
1032 tuple_set_u64(t, 1, comm->db_id);
1033 tuple_set_u64(t, 2, thread->db_id);
1034
1035 call_object(tables->comm_thread_handler, t, "comm_thread_table");
1036
1037 Py_DECREF(t);
1038
1039 return 0;
1040 }
1041
1042 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1043 struct machine *machine)
1044 {
1045 struct tables *tables = container_of(dbe, struct tables, dbe);
1046 char sbuild_id[SBUILD_ID_SIZE];
1047 PyObject *t;
1048
1049 build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
1050
1051 t = tuple_new(5);
1052
1053 tuple_set_u64(t, 0, dso->db_id);
1054 tuple_set_u64(t, 1, machine->db_id);
1055 tuple_set_string(t, 2, dso->short_name);
1056 tuple_set_string(t, 3, dso->long_name);
1057 tuple_set_string(t, 4, sbuild_id);
1058
1059 call_object(tables->dso_handler, t, "dso_table");
1060
1061 Py_DECREF(t);
1062
1063 return 0;
1064 }
1065
1066 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1067 struct dso *dso)
1068 {
1069 struct tables *tables = container_of(dbe, struct tables, dbe);
1070 u64 *sym_db_id = symbol__priv(sym);
1071 PyObject *t;
1072
1073 t = tuple_new(6);
1074
1075 tuple_set_u64(t, 0, *sym_db_id);
1076 tuple_set_u64(t, 1, dso->db_id);
1077 tuple_set_u64(t, 2, sym->start);
1078 tuple_set_u64(t, 3, sym->end);
1079 tuple_set_s32(t, 4, sym->binding);
1080 tuple_set_string(t, 5, sym->name);
1081
1082 call_object(tables->symbol_handler, t, "symbol_table");
1083
1084 Py_DECREF(t);
1085
1086 return 0;
1087 }
1088
1089 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1090 const char *name)
1091 {
1092 struct tables *tables = container_of(dbe, struct tables, dbe);
1093 PyObject *t;
1094
1095 t = tuple_new(2);
1096
1097 tuple_set_s32(t, 0, branch_type);
1098 tuple_set_string(t, 1, name);
1099
1100 call_object(tables->branch_type_handler, t, "branch_type_table");
1101
1102 Py_DECREF(t);
1103
1104 return 0;
1105 }
1106
1107 static int python_export_sample(struct db_export *dbe,
1108 struct export_sample *es)
1109 {
1110 struct tables *tables = container_of(dbe, struct tables, dbe);
1111 PyObject *t;
1112
1113 t = tuple_new(22);
1114
1115 tuple_set_u64(t, 0, es->db_id);
1116 tuple_set_u64(t, 1, es->evsel->db_id);
1117 tuple_set_u64(t, 2, es->al->machine->db_id);
1118 tuple_set_u64(t, 3, es->al->thread->db_id);
1119 tuple_set_u64(t, 4, es->comm_db_id);
1120 tuple_set_u64(t, 5, es->dso_db_id);
1121 tuple_set_u64(t, 6, es->sym_db_id);
1122 tuple_set_u64(t, 7, es->offset);
1123 tuple_set_u64(t, 8, es->sample->ip);
1124 tuple_set_u64(t, 9, es->sample->time);
1125 tuple_set_s32(t, 10, es->sample->cpu);
1126 tuple_set_u64(t, 11, es->addr_dso_db_id);
1127 tuple_set_u64(t, 12, es->addr_sym_db_id);
1128 tuple_set_u64(t, 13, es->addr_offset);
1129 tuple_set_u64(t, 14, es->sample->addr);
1130 tuple_set_u64(t, 15, es->sample->period);
1131 tuple_set_u64(t, 16, es->sample->weight);
1132 tuple_set_u64(t, 17, es->sample->transaction);
1133 tuple_set_u64(t, 18, es->sample->data_src);
1134 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1135 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1136 tuple_set_u64(t, 21, es->call_path_id);
1137
1138 call_object(tables->sample_handler, t, "sample_table");
1139
1140 Py_DECREF(t);
1141
1142 return 0;
1143 }
1144
1145 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1146 {
1147 struct tables *tables = container_of(dbe, struct tables, dbe);
1148 PyObject *t;
1149 u64 parent_db_id, sym_db_id;
1150
1151 parent_db_id = cp->parent ? cp->parent->db_id : 0;
1152 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1153
1154 t = tuple_new(4);
1155
1156 tuple_set_u64(t, 0, cp->db_id);
1157 tuple_set_u64(t, 1, parent_db_id);
1158 tuple_set_u64(t, 2, sym_db_id);
1159 tuple_set_u64(t, 3, cp->ip);
1160
1161 call_object(tables->call_path_handler, t, "call_path_table");
1162
1163 Py_DECREF(t);
1164
1165 return 0;
1166 }
1167
1168 static int python_export_call_return(struct db_export *dbe,
1169 struct call_return *cr)
1170 {
1171 struct tables *tables = container_of(dbe, struct tables, dbe);
1172 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1173 PyObject *t;
1174
1175 t = tuple_new(11);
1176
1177 tuple_set_u64(t, 0, cr->db_id);
1178 tuple_set_u64(t, 1, cr->thread->db_id);
1179 tuple_set_u64(t, 2, comm_db_id);
1180 tuple_set_u64(t, 3, cr->cp->db_id);
1181 tuple_set_u64(t, 4, cr->call_time);
1182 tuple_set_u64(t, 5, cr->return_time);
1183 tuple_set_u64(t, 6, cr->branch_count);
1184 tuple_set_u64(t, 7, cr->call_ref);
1185 tuple_set_u64(t, 8, cr->return_ref);
1186 tuple_set_u64(t, 9, cr->cp->parent->db_id);
1187 tuple_set_s32(t, 10, cr->flags);
1188
1189 call_object(tables->call_return_handler, t, "call_return_table");
1190
1191 Py_DECREF(t);
1192
1193 return 0;
1194 }
1195
1196 static int python_process_call_return(struct call_return *cr, void *data)
1197 {
1198 struct db_export *dbe = data;
1199
1200 return db_export__call_return(dbe, cr);
1201 }
1202
1203 static void python_process_general_event(struct perf_sample *sample,
1204 struct perf_evsel *evsel,
1205 struct addr_location *al)
1206 {
1207 PyObject *handler, *t, *dict, *callchain;
1208 static char handler_name[64];
1209 unsigned n = 0;
1210
1211 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1212
1213 handler = get_handler(handler_name);
1214 if (!handler)
1215 return;
1216
1217 /*
1218 * Use the MAX_FIELDS to make the function expandable, though
1219 * currently there is only one item for the tuple.
1220 */
1221 t = PyTuple_New(MAX_FIELDS);
1222 if (!t)
1223 Py_FatalError("couldn't create Python tuple");
1224
1225 /* ip unwinding */
1226 callchain = python_process_callchain(sample, evsel, al);
1227 dict = get_perf_sample_dict(sample, evsel, al, callchain);
1228
1229 PyTuple_SetItem(t, n++, dict);
1230 if (_PyTuple_Resize(&t, n) == -1)
1231 Py_FatalError("error resizing Python tuple");
1232
1233 call_object(handler, t, handler_name);
1234
1235 Py_DECREF(t);
1236 }
1237
1238 static void python_process_event(union perf_event *event,
1239 struct perf_sample *sample,
1240 struct perf_evsel *evsel,
1241 struct addr_location *al)
1242 {
1243 struct tables *tables = &tables_global;
1244
1245 switch (evsel->attr.type) {
1246 case PERF_TYPE_TRACEPOINT:
1247 python_process_tracepoint(sample, evsel, al);
1248 break;
1249 /* Reserve for future process_hw/sw/raw APIs */
1250 default:
1251 if (tables->db_export_mode)
1252 db_export__sample(&tables->dbe, event, sample, evsel, al);
1253 else
1254 python_process_general_event(sample, evsel, al);
1255 }
1256 }
1257
1258 static void get_handler_name(char *str, size_t size,
1259 struct perf_evsel *evsel)
1260 {
1261 char *p = str;
1262
1263 scnprintf(str, size, "stat__%s", perf_evsel__name(evsel));
1264
1265 while ((p = strchr(p, ':'))) {
1266 *p = '_';
1267 p++;
1268 }
1269 }
1270
1271 static void
1272 process_stat(struct perf_evsel *counter, int cpu, int thread, u64 tstamp,
1273 struct perf_counts_values *count)
1274 {
1275 PyObject *handler, *t;
1276 static char handler_name[256];
1277 int n = 0;
1278
1279 t = PyTuple_New(MAX_FIELDS);
1280 if (!t)
1281 Py_FatalError("couldn't create Python tuple");
1282
1283 get_handler_name(handler_name, sizeof(handler_name),
1284 counter);
1285
1286 handler = get_handler(handler_name);
1287 if (!handler) {
1288 pr_debug("can't find python handler %s\n", handler_name);
1289 return;
1290 }
1291
1292 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1293 PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1294
1295 tuple_set_u64(t, n++, tstamp);
1296 tuple_set_u64(t, n++, count->val);
1297 tuple_set_u64(t, n++, count->ena);
1298 tuple_set_u64(t, n++, count->run);
1299
1300 if (_PyTuple_Resize(&t, n) == -1)
1301 Py_FatalError("error resizing Python tuple");
1302
1303 call_object(handler, t, handler_name);
1304
1305 Py_DECREF(t);
1306 }
1307
1308 static void python_process_stat(struct perf_stat_config *config,
1309 struct perf_evsel *counter, u64 tstamp)
1310 {
1311 struct thread_map *threads = counter->threads;
1312 struct cpu_map *cpus = counter->cpus;
1313 int cpu, thread;
1314
1315 if (config->aggr_mode == AGGR_GLOBAL) {
1316 process_stat(counter, -1, -1, tstamp,
1317 &counter->counts->aggr);
1318 return;
1319 }
1320
1321 for (thread = 0; thread < threads->nr; thread++) {
1322 for (cpu = 0; cpu < cpus->nr; cpu++) {
1323 process_stat(counter, cpus->map[cpu],
1324 thread_map__pid(threads, thread), tstamp,
1325 perf_counts(counter->counts, cpu, thread));
1326 }
1327 }
1328 }
1329
1330 static void python_process_stat_interval(u64 tstamp)
1331 {
1332 PyObject *handler, *t;
1333 static const char handler_name[] = "stat__interval";
1334 int n = 0;
1335
1336 t = PyTuple_New(MAX_FIELDS);
1337 if (!t)
1338 Py_FatalError("couldn't create Python tuple");
1339
1340 handler = get_handler(handler_name);
1341 if (!handler) {
1342 pr_debug("can't find python handler %s\n", handler_name);
1343 return;
1344 }
1345
1346 tuple_set_u64(t, n++, tstamp);
1347
1348 if (_PyTuple_Resize(&t, n) == -1)
1349 Py_FatalError("error resizing Python tuple");
1350
1351 call_object(handler, t, handler_name);
1352
1353 Py_DECREF(t);
1354 }
1355
1356 static int run_start_sub(void)
1357 {
1358 main_module = PyImport_AddModule("__main__");
1359 if (main_module == NULL)
1360 return -1;
1361 Py_INCREF(main_module);
1362
1363 main_dict = PyModule_GetDict(main_module);
1364 if (main_dict == NULL)
1365 goto error;
1366 Py_INCREF(main_dict);
1367
1368 try_call_object("trace_begin", NULL);
1369
1370 return 0;
1371
1372 error:
1373 Py_XDECREF(main_dict);
1374 Py_XDECREF(main_module);
1375 return -1;
1376 }
1377
1378 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
1379 tables->handler_name = get_handler(#table_name); \
1380 if (tables->handler_name) \
1381 tables->dbe.export_ ## name = python_export_ ## name; \
1382 } while (0)
1383
1384 #define SET_TABLE_HANDLER(name) \
1385 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1386
1387 static void set_table_handlers(struct tables *tables)
1388 {
1389 const char *perf_db_export_mode = "perf_db_export_mode";
1390 const char *perf_db_export_calls = "perf_db_export_calls";
1391 const char *perf_db_export_callchains = "perf_db_export_callchains";
1392 PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1393 bool export_calls = false;
1394 bool export_callchains = false;
1395 int ret;
1396
1397 memset(tables, 0, sizeof(struct tables));
1398 if (db_export__init(&tables->dbe))
1399 Py_FatalError("failed to initialize export");
1400
1401 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1402 if (!db_export_mode)
1403 return;
1404
1405 ret = PyObject_IsTrue(db_export_mode);
1406 if (ret == -1)
1407 handler_call_die(perf_db_export_mode);
1408 if (!ret)
1409 return;
1410
1411 /* handle export calls */
1412 tables->dbe.crp = NULL;
1413 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1414 if (db_export_calls) {
1415 ret = PyObject_IsTrue(db_export_calls);
1416 if (ret == -1)
1417 handler_call_die(perf_db_export_calls);
1418 export_calls = !!ret;
1419 }
1420
1421 if (export_calls) {
1422 tables->dbe.crp =
1423 call_return_processor__new(python_process_call_return,
1424 &tables->dbe);
1425 if (!tables->dbe.crp)
1426 Py_FatalError("failed to create calls processor");
1427 }
1428
1429 /* handle export callchains */
1430 tables->dbe.cpr = NULL;
1431 db_export_callchains = PyDict_GetItemString(main_dict,
1432 perf_db_export_callchains);
1433 if (db_export_callchains) {
1434 ret = PyObject_IsTrue(db_export_callchains);
1435 if (ret == -1)
1436 handler_call_die(perf_db_export_callchains);
1437 export_callchains = !!ret;
1438 }
1439
1440 if (export_callchains) {
1441 /*
1442 * Attempt to use the call path root from the call return
1443 * processor, if the call return processor is in use. Otherwise,
1444 * we allocate a new call path root. This prevents exporting
1445 * duplicate call path ids when both are in use simultaniously.
1446 */
1447 if (tables->dbe.crp)
1448 tables->dbe.cpr = tables->dbe.crp->cpr;
1449 else
1450 tables->dbe.cpr = call_path_root__new();
1451
1452 if (!tables->dbe.cpr)
1453 Py_FatalError("failed to create call path root");
1454 }
1455
1456 tables->db_export_mode = true;
1457 /*
1458 * Reserve per symbol space for symbol->db_id via symbol__priv()
1459 */
1460 symbol_conf.priv_size = sizeof(u64);
1461
1462 SET_TABLE_HANDLER(evsel);
1463 SET_TABLE_HANDLER(machine);
1464 SET_TABLE_HANDLER(thread);
1465 SET_TABLE_HANDLER(comm);
1466 SET_TABLE_HANDLER(comm_thread);
1467 SET_TABLE_HANDLER(dso);
1468 SET_TABLE_HANDLER(symbol);
1469 SET_TABLE_HANDLER(branch_type);
1470 SET_TABLE_HANDLER(sample);
1471 SET_TABLE_HANDLER(call_path);
1472 SET_TABLE_HANDLER(call_return);
1473 }
1474
1475 #if PY_MAJOR_VERSION < 3
1476 static void _free_command_line(const char **command_line, int num)
1477 {
1478 free(command_line);
1479 }
1480 #else
1481 static void _free_command_line(wchar_t **command_line, int num)
1482 {
1483 int i;
1484 for (i = 0; i < num; i++)
1485 PyMem_RawFree(command_line[i]);
1486 free(command_line);
1487 }
1488 #endif
1489
1490
1491 /*
1492 * Start trace script
1493 */
1494 static int python_start_script(const char *script, int argc, const char **argv)
1495 {
1496 struct tables *tables = &tables_global;
1497 #if PY_MAJOR_VERSION < 3
1498 const char **command_line;
1499 #else
1500 wchar_t **command_line;
1501 #endif
1502 char buf[PATH_MAX];
1503 int i, err = 0;
1504 FILE *fp;
1505
1506 #if PY_MAJOR_VERSION < 3
1507 command_line = malloc((argc + 1) * sizeof(const char *));
1508 command_line[0] = script;
1509 for (i = 1; i < argc + 1; i++)
1510 command_line[i] = argv[i - 1];
1511 #else
1512 command_line = malloc((argc + 1) * sizeof(wchar_t *));
1513 command_line[0] = Py_DecodeLocale(script, NULL);
1514 for (i = 1; i < argc + 1; i++)
1515 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1516 #endif
1517
1518 Py_Initialize();
1519
1520 #if PY_MAJOR_VERSION < 3
1521 initperf_trace_context();
1522 PySys_SetArgv(argc + 1, (char **)command_line);
1523 #else
1524 PyInit_perf_trace_context();
1525 PySys_SetArgv(argc + 1, command_line);
1526 #endif
1527
1528 fp = fopen(script, "r");
1529 if (!fp) {
1530 sprintf(buf, "Can't open python script \"%s\"", script);
1531 perror(buf);
1532 err = -1;
1533 goto error;
1534 }
1535
1536 err = PyRun_SimpleFile(fp, script);
1537 if (err) {
1538 fprintf(stderr, "Error running python script %s\n", script);
1539 goto error;
1540 }
1541
1542 err = run_start_sub();
1543 if (err) {
1544 fprintf(stderr, "Error starting python script %s\n", script);
1545 goto error;
1546 }
1547
1548 set_table_handlers(tables);
1549
1550 if (tables->db_export_mode) {
1551 err = db_export__branch_types(&tables->dbe);
1552 if (err)
1553 goto error;
1554 }
1555
1556 _free_command_line(command_line, argc + 1);
1557
1558 return err;
1559 error:
1560 Py_Finalize();
1561 _free_command_line(command_line, argc + 1);
1562
1563 return err;
1564 }
1565
1566 static int python_flush_script(void)
1567 {
1568 struct tables *tables = &tables_global;
1569
1570 return db_export__flush(&tables->dbe);
1571 }
1572
1573 /*
1574 * Stop trace script
1575 */
1576 static int python_stop_script(void)
1577 {
1578 struct tables *tables = &tables_global;
1579
1580 try_call_object("trace_end", NULL);
1581
1582 db_export__exit(&tables->dbe);
1583
1584 Py_XDECREF(main_dict);
1585 Py_XDECREF(main_module);
1586 Py_Finalize();
1587
1588 return 0;
1589 }
1590
1591 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1592 {
1593 struct event_format *event = NULL;
1594 struct format_field *f;
1595 char fname[PATH_MAX];
1596 int not_first, count;
1597 FILE *ofp;
1598
1599 sprintf(fname, "%s.py", outfile);
1600 ofp = fopen(fname, "w");
1601 if (ofp == NULL) {
1602 fprintf(stderr, "couldn't open %s\n", fname);
1603 return -1;
1604 }
1605 fprintf(ofp, "# perf script event handlers, "
1606 "generated by perf script -g python\n");
1607
1608 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1609 " License version 2\n\n");
1610
1611 fprintf(ofp, "# The common_* event handler fields are the most useful "
1612 "fields common to\n");
1613
1614 fprintf(ofp, "# all events. They don't necessarily correspond to "
1615 "the 'common_*' fields\n");
1616
1617 fprintf(ofp, "# in the format files. Those fields not available as "
1618 "handler params can\n");
1619
1620 fprintf(ofp, "# be retrieved using Python functions of the form "
1621 "common_*(context).\n");
1622
1623 fprintf(ofp, "# See the perf-script-python Documentation for the list "
1624 "of available functions.\n\n");
1625
1626 fprintf(ofp, "from __future__ import print_function\n\n");
1627 fprintf(ofp, "import os\n");
1628 fprintf(ofp, "import sys\n\n");
1629
1630 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1631 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1632 fprintf(ofp, "\nfrom perf_trace_context import *\n");
1633 fprintf(ofp, "from Core import *\n\n\n");
1634
1635 fprintf(ofp, "def trace_begin():\n");
1636 fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
1637
1638 fprintf(ofp, "def trace_end():\n");
1639 fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
1640
1641 while ((event = trace_find_next_event(pevent, event))) {
1642 fprintf(ofp, "def %s__%s(", event->system, event->name);
1643 fprintf(ofp, "event_name, ");
1644 fprintf(ofp, "context, ");
1645 fprintf(ofp, "common_cpu,\n");
1646 fprintf(ofp, "\tcommon_secs, ");
1647 fprintf(ofp, "common_nsecs, ");
1648 fprintf(ofp, "common_pid, ");
1649 fprintf(ofp, "common_comm,\n\t");
1650 fprintf(ofp, "common_callchain, ");
1651
1652 not_first = 0;
1653 count = 0;
1654
1655 for (f = event->format.fields; f; f = f->next) {
1656 if (not_first++)
1657 fprintf(ofp, ", ");
1658 if (++count % 5 == 0)
1659 fprintf(ofp, "\n\t");
1660
1661 fprintf(ofp, "%s", f->name);
1662 }
1663 if (not_first++)
1664 fprintf(ofp, ", ");
1665 if (++count % 5 == 0)
1666 fprintf(ofp, "\n\t\t");
1667 fprintf(ofp, "perf_sample_dict");
1668
1669 fprintf(ofp, "):\n");
1670
1671 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1672 "common_secs, common_nsecs,\n\t\t\t"
1673 "common_pid, common_comm)\n\n");
1674
1675 fprintf(ofp, "\t\tprint(\"");
1676
1677 not_first = 0;
1678 count = 0;
1679
1680 for (f = event->format.fields; f; f = f->next) {
1681 if (not_first++)
1682 fprintf(ofp, ", ");
1683 if (count && count % 3 == 0) {
1684 fprintf(ofp, "\" \\\n\t\t\"");
1685 }
1686 count++;
1687
1688 fprintf(ofp, "%s=", f->name);
1689 if (f->flags & FIELD_IS_STRING ||
1690 f->flags & FIELD_IS_FLAG ||
1691 f->flags & FIELD_IS_ARRAY ||
1692 f->flags & FIELD_IS_SYMBOLIC)
1693 fprintf(ofp, "%%s");
1694 else if (f->flags & FIELD_IS_SIGNED)
1695 fprintf(ofp, "%%d");
1696 else
1697 fprintf(ofp, "%%u");
1698 }
1699
1700 fprintf(ofp, "\" %% \\\n\t\t(");
1701
1702 not_first = 0;
1703 count = 0;
1704
1705 for (f = event->format.fields; f; f = f->next) {
1706 if (not_first++)
1707 fprintf(ofp, ", ");
1708
1709 if (++count % 5 == 0)
1710 fprintf(ofp, "\n\t\t");
1711
1712 if (f->flags & FIELD_IS_FLAG) {
1713 if ((count - 1) % 5 != 0) {
1714 fprintf(ofp, "\n\t\t");
1715 count = 4;
1716 }
1717 fprintf(ofp, "flag_str(\"");
1718 fprintf(ofp, "%s__%s\", ", event->system,
1719 event->name);
1720 fprintf(ofp, "\"%s\", %s)", f->name,
1721 f->name);
1722 } else if (f->flags & FIELD_IS_SYMBOLIC) {
1723 if ((count - 1) % 5 != 0) {
1724 fprintf(ofp, "\n\t\t");
1725 count = 4;
1726 }
1727 fprintf(ofp, "symbol_str(\"");
1728 fprintf(ofp, "%s__%s\", ", event->system,
1729 event->name);
1730 fprintf(ofp, "\"%s\", %s)", f->name,
1731 f->name);
1732 } else
1733 fprintf(ofp, "%s", f->name);
1734 }
1735
1736 fprintf(ofp, "))\n\n");
1737
1738 fprintf(ofp, "\t\tprint('Sample: {'+"
1739 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1740
1741 fprintf(ofp, "\t\tfor node in common_callchain:");
1742 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1743 fprintf(ofp, "\n\t\t\t\tprint(\"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name']))");
1744 fprintf(ofp, "\n\t\t\telse:");
1745 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
1746 fprintf(ofp, "\t\tprint()\n\n");
1747
1748 }
1749
1750 fprintf(ofp, "def trace_unhandled(event_name, context, "
1751 "event_fields_dict, perf_sample_dict):\n");
1752
1753 fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
1754 fprintf(ofp, "\t\tprint('Sample: {'+"
1755 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1756
1757 fprintf(ofp, "def print_header("
1758 "event_name, cpu, secs, nsecs, pid, comm):\n"
1759 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1760 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
1761
1762 fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
1763 "\treturn delimiter.join"
1764 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
1765
1766 fclose(ofp);
1767
1768 fprintf(stderr, "generated Python script: %s\n", fname);
1769
1770 return 0;
1771 }
1772
1773 struct scripting_ops python_scripting_ops = {
1774 .name = "Python",
1775 .start_script = python_start_script,
1776 .flush_script = python_flush_script,
1777 .stop_script = python_stop_script,
1778 .process_event = python_process_event,
1779 .process_stat = python_process_stat,
1780 .process_stat_interval = python_process_stat_interval,
1781 .generate_script = python_generate_script,
1782 };
Linux with added FPC-III support