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Linux 5.1.15
[linux/fpc-iii.git] / tools / perf / util / scripting-engines / trace-event-python.c
blob09604c6508f040098eec7dbab6164afb5bc42768
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 "map.h"
48 #include "symbol.h"
49 #include "thread_map.h"
50 #include "cpumap.h"
51 #include "print_binary.h"
52 #include "stat.h"
53 #include "mem-events.h"
54
55 #if PY_MAJOR_VERSION < 3
56 #define _PyUnicode_FromString(arg) \
57 PyString_FromString(arg)
58 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
59 PyString_FromStringAndSize((arg1), (arg2))
60 #define _PyBytes_FromStringAndSize(arg1, arg2) \
61 PyString_FromStringAndSize((arg1), (arg2))
62 #define _PyLong_FromLong(arg) \
63 PyInt_FromLong(arg)
64 #define _PyLong_AsLong(arg) \
65 PyInt_AsLong(arg)
66 #define _PyCapsule_New(arg1, arg2, arg3) \
67 PyCObject_FromVoidPtr((arg1), (arg2))
68
69 PyMODINIT_FUNC initperf_trace_context(void);
70 #else
71 #define _PyUnicode_FromString(arg) \
72 PyUnicode_FromString(arg)
73 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
74 PyUnicode_FromStringAndSize((arg1), (arg2))
75 #define _PyBytes_FromStringAndSize(arg1, arg2) \
76 PyBytes_FromStringAndSize((arg1), (arg2))
77 #define _PyLong_FromLong(arg) \
78 PyLong_FromLong(arg)
79 #define _PyLong_AsLong(arg) \
80 PyLong_AsLong(arg)
81 #define _PyCapsule_New(arg1, arg2, arg3) \
82 PyCapsule_New((arg1), (arg2), (arg3))
83
84 PyMODINIT_FUNC PyInit_perf_trace_context(void);
85 #endif
86
87 #define TRACE_EVENT_TYPE_MAX \
88 ((1 << (sizeof(unsigned short) * 8)) - 1)
89
90 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
91
92 #define MAX_FIELDS 64
93 #define N_COMMON_FIELDS 7
94
95 extern struct scripting_context *scripting_context;
96
97 static char *cur_field_name;
98 static int zero_flag_atom;
99
100 static PyObject *main_module, *main_dict;
101
102 struct tables {
103 struct db_export dbe;
104 PyObject *evsel_handler;
105 PyObject *machine_handler;
106 PyObject *thread_handler;
107 PyObject *comm_handler;
108 PyObject *comm_thread_handler;
109 PyObject *dso_handler;
110 PyObject *symbol_handler;
111 PyObject *branch_type_handler;
112 PyObject *sample_handler;
113 PyObject *call_path_handler;
114 PyObject *call_return_handler;
115 bool db_export_mode;
116 };
117
118 static struct tables tables_global;
119
120 static void handler_call_die(const char *handler_name) __noreturn;
121 static void handler_call_die(const char *handler_name)
122 {
123 PyErr_Print();
124 Py_FatalError("problem in Python trace event handler");
125 // Py_FatalError does not return
126 // but we have to make the compiler happy
127 abort();
128 }
129
130 /*
131 * Insert val into into the dictionary and decrement the reference counter.
132 * This is necessary for dictionaries since PyDict_SetItemString() does not
133 * steal a reference, as opposed to PyTuple_SetItem().
134 */
135 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
136 {
137 PyDict_SetItemString(dict, key, val);
138 Py_DECREF(val);
139 }
140
141 static PyObject *get_handler(const char *handler_name)
142 {
143 PyObject *handler;
144
145 handler = PyDict_GetItemString(main_dict, handler_name);
146 if (handler && !PyCallable_Check(handler))
147 return NULL;
148 return handler;
149 }
150
151 static int get_argument_count(PyObject *handler)
152 {
153 int arg_count = 0;
154
155 /*
156 * The attribute for the code object is func_code in Python 2,
157 * whereas it is __code__ in Python 3.0+.
158 */
159 PyObject *code_obj = PyObject_GetAttrString(handler,
160 "func_code");
161 if (PyErr_Occurred()) {
162 PyErr_Clear();
163 code_obj = PyObject_GetAttrString(handler,
164 "__code__");
165 }
166 PyErr_Clear();
167 if (code_obj) {
168 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
169 "co_argcount");
170 if (arg_count_obj) {
171 arg_count = (int) _PyLong_AsLong(arg_count_obj);
172 Py_DECREF(arg_count_obj);
173 }
174 Py_DECREF(code_obj);
175 }
176 return arg_count;
177 }
178
179 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
180 {
181 PyObject *retval;
182
183 retval = PyObject_CallObject(handler, args);
184 if (retval == NULL)
185 handler_call_die(die_msg);
186 Py_DECREF(retval);
187 }
188
189 static void try_call_object(const char *handler_name, PyObject *args)
190 {
191 PyObject *handler;
192
193 handler = get_handler(handler_name);
194 if (handler)
195 call_object(handler, args, handler_name);
196 }
197
198 static void define_value(enum tep_print_arg_type field_type,
199 const char *ev_name,
200 const char *field_name,
201 const char *field_value,
202 const char *field_str)
203 {
204 const char *handler_name = "define_flag_value";
205 PyObject *t;
206 unsigned long long value;
207 unsigned n = 0;
208
209 if (field_type == TEP_PRINT_SYMBOL)
210 handler_name = "define_symbolic_value";
211
212 t = PyTuple_New(4);
213 if (!t)
214 Py_FatalError("couldn't create Python tuple");
215
216 value = eval_flag(field_value);
217
218 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
219 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
220 PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
221 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
222
223 try_call_object(handler_name, t);
224
225 Py_DECREF(t);
226 }
227
228 static void define_values(enum tep_print_arg_type field_type,
229 struct tep_print_flag_sym *field,
230 const char *ev_name,
231 const char *field_name)
232 {
233 define_value(field_type, ev_name, field_name, field->value,
234 field->str);
235
236 if (field->next)
237 define_values(field_type, field->next, ev_name, field_name);
238 }
239
240 static void define_field(enum tep_print_arg_type field_type,
241 const char *ev_name,
242 const char *field_name,
243 const char *delim)
244 {
245 const char *handler_name = "define_flag_field";
246 PyObject *t;
247 unsigned n = 0;
248
249 if (field_type == TEP_PRINT_SYMBOL)
250 handler_name = "define_symbolic_field";
251
252 if (field_type == TEP_PRINT_FLAGS)
253 t = PyTuple_New(3);
254 else
255 t = PyTuple_New(2);
256 if (!t)
257 Py_FatalError("couldn't create Python tuple");
258
259 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
260 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
261 if (field_type == TEP_PRINT_FLAGS)
262 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
263
264 try_call_object(handler_name, t);
265
266 Py_DECREF(t);
267 }
268
269 static void define_event_symbols(struct tep_event *event,
270 const char *ev_name,
271 struct tep_print_arg *args)
272 {
273 if (args == NULL)
274 return;
275
276 switch (args->type) {
277 case TEP_PRINT_NULL:
278 break;
279 case TEP_PRINT_ATOM:
280 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
281 args->atom.atom);
282 zero_flag_atom = 0;
283 break;
284 case TEP_PRINT_FIELD:
285 free(cur_field_name);
286 cur_field_name = strdup(args->field.name);
287 break;
288 case TEP_PRINT_FLAGS:
289 define_event_symbols(event, ev_name, args->flags.field);
290 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
291 args->flags.delim);
292 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
293 cur_field_name);
294 break;
295 case TEP_PRINT_SYMBOL:
296 define_event_symbols(event, ev_name, args->symbol.field);
297 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
298 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
299 cur_field_name);
300 break;
301 case TEP_PRINT_HEX:
302 case TEP_PRINT_HEX_STR:
303 define_event_symbols(event, ev_name, args->hex.field);
304 define_event_symbols(event, ev_name, args->hex.size);
305 break;
306 case TEP_PRINT_INT_ARRAY:
307 define_event_symbols(event, ev_name, args->int_array.field);
308 define_event_symbols(event, ev_name, args->int_array.count);
309 define_event_symbols(event, ev_name, args->int_array.el_size);
310 break;
311 case TEP_PRINT_STRING:
312 break;
313 case TEP_PRINT_TYPE:
314 define_event_symbols(event, ev_name, args->typecast.item);
315 break;
316 case TEP_PRINT_OP:
317 if (strcmp(args->op.op, ":") == 0)
318 zero_flag_atom = 1;
319 define_event_symbols(event, ev_name, args->op.left);
320 define_event_symbols(event, ev_name, args->op.right);
321 break;
322 default:
323 /* gcc warns for these? */
324 case TEP_PRINT_BSTRING:
325 case TEP_PRINT_DYNAMIC_ARRAY:
326 case TEP_PRINT_DYNAMIC_ARRAY_LEN:
327 case TEP_PRINT_FUNC:
328 case TEP_PRINT_BITMASK:
329 /* we should warn... */
330 return;
331 }
332
333 if (args->next)
334 define_event_symbols(event, ev_name, args->next);
335 }
336
337 static PyObject *get_field_numeric_entry(struct tep_event *event,
338 struct tep_format_field *field, void *data)
339 {
340 bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
341 PyObject *obj = NULL, *list = NULL;
342 unsigned long long val;
343 unsigned int item_size, n_items, i;
344
345 if (is_array) {
346 list = PyList_New(field->arraylen);
347 item_size = field->size / field->arraylen;
348 n_items = field->arraylen;
349 } else {
350 item_size = field->size;
351 n_items = 1;
352 }
353
354 for (i = 0; i < n_items; i++) {
355
356 val = read_size(event, data + field->offset + i * item_size,
357 item_size);
358 if (field->flags & TEP_FIELD_IS_SIGNED) {
359 if ((long long)val >= LONG_MIN &&
360 (long long)val <= LONG_MAX)
361 obj = _PyLong_FromLong(val);
362 else
363 obj = PyLong_FromLongLong(val);
364 } else {
365 if (val <= LONG_MAX)
366 obj = _PyLong_FromLong(val);
367 else
368 obj = PyLong_FromUnsignedLongLong(val);
369 }
370 if (is_array)
371 PyList_SET_ITEM(list, i, obj);
372 }
373 if (is_array)
374 obj = list;
375 return obj;
376 }
377
378 static const char *get_dsoname(struct map *map)
379 {
380 const char *dsoname = "[unknown]";
381
382 if (map && map->dso) {
383 if (symbol_conf.show_kernel_path && map->dso->long_name)
384 dsoname = map->dso->long_name;
385 else
386 dsoname = map->dso->name;
387 }
388
389 return dsoname;
390 }
391
392 static PyObject *python_process_callchain(struct perf_sample *sample,
393 struct perf_evsel *evsel,
394 struct addr_location *al)
395 {
396 PyObject *pylist;
397
398 pylist = PyList_New(0);
399 if (!pylist)
400 Py_FatalError("couldn't create Python list");
401
402 if (!symbol_conf.use_callchain || !sample->callchain)
403 goto exit;
404
405 if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
406 sample, NULL, NULL,
407 scripting_max_stack) != 0) {
408 pr_err("Failed to resolve callchain. Skipping\n");
409 goto exit;
410 }
411 callchain_cursor_commit(&callchain_cursor);
412
413
414 while (1) {
415 PyObject *pyelem;
416 struct callchain_cursor_node *node;
417 node = callchain_cursor_current(&callchain_cursor);
418 if (!node)
419 break;
420
421 pyelem = PyDict_New();
422 if (!pyelem)
423 Py_FatalError("couldn't create Python dictionary");
424
425
426 pydict_set_item_string_decref(pyelem, "ip",
427 PyLong_FromUnsignedLongLong(node->ip));
428
429 if (node->sym) {
430 PyObject *pysym = PyDict_New();
431 if (!pysym)
432 Py_FatalError("couldn't create Python dictionary");
433 pydict_set_item_string_decref(pysym, "start",
434 PyLong_FromUnsignedLongLong(node->sym->start));
435 pydict_set_item_string_decref(pysym, "end",
436 PyLong_FromUnsignedLongLong(node->sym->end));
437 pydict_set_item_string_decref(pysym, "binding",
438 _PyLong_FromLong(node->sym->binding));
439 pydict_set_item_string_decref(pysym, "name",
440 _PyUnicode_FromStringAndSize(node->sym->name,
441 node->sym->namelen));
442 pydict_set_item_string_decref(pyelem, "sym", pysym);
443 }
444
445 if (node->map) {
446 const char *dsoname = get_dsoname(node->map);
447
448 pydict_set_item_string_decref(pyelem, "dso",
449 _PyUnicode_FromString(dsoname));
450 }
451
452 callchain_cursor_advance(&callchain_cursor);
453 PyList_Append(pylist, pyelem);
454 Py_DECREF(pyelem);
455 }
456
457 exit:
458 return pylist;
459 }
460
461 static PyObject *python_process_brstack(struct perf_sample *sample,
462 struct thread *thread)
463 {
464 struct branch_stack *br = sample->branch_stack;
465 PyObject *pylist;
466 u64 i;
467
468 pylist = PyList_New(0);
469 if (!pylist)
470 Py_FatalError("couldn't create Python list");
471
472 if (!(br && br->nr))
473 goto exit;
474
475 for (i = 0; i < br->nr; i++) {
476 PyObject *pyelem;
477 struct addr_location al;
478 const char *dsoname;
479
480 pyelem = PyDict_New();
481 if (!pyelem)
482 Py_FatalError("couldn't create Python dictionary");
483
484 pydict_set_item_string_decref(pyelem, "from",
485 PyLong_FromUnsignedLongLong(br->entries[i].from));
486 pydict_set_item_string_decref(pyelem, "to",
487 PyLong_FromUnsignedLongLong(br->entries[i].to));
488 pydict_set_item_string_decref(pyelem, "mispred",
489 PyBool_FromLong(br->entries[i].flags.mispred));
490 pydict_set_item_string_decref(pyelem, "predicted",
491 PyBool_FromLong(br->entries[i].flags.predicted));
492 pydict_set_item_string_decref(pyelem, "in_tx",
493 PyBool_FromLong(br->entries[i].flags.in_tx));
494 pydict_set_item_string_decref(pyelem, "abort",
495 PyBool_FromLong(br->entries[i].flags.abort));
496 pydict_set_item_string_decref(pyelem, "cycles",
497 PyLong_FromUnsignedLongLong(br->entries[i].flags.cycles));
498
499 thread__find_map_fb(thread, sample->cpumode,
500 br->entries[i].from, &al);
501 dsoname = get_dsoname(al.map);
502 pydict_set_item_string_decref(pyelem, "from_dsoname",
503 _PyUnicode_FromString(dsoname));
504
505 thread__find_map_fb(thread, sample->cpumode,
506 br->entries[i].to, &al);
507 dsoname = get_dsoname(al.map);
508 pydict_set_item_string_decref(pyelem, "to_dsoname",
509 _PyUnicode_FromString(dsoname));
510
511 PyList_Append(pylist, pyelem);
512 Py_DECREF(pyelem);
513 }
514
515 exit:
516 return pylist;
517 }
518
519 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
520 {
521 unsigned long offset;
522
523 if (al->addr < sym->end)
524 offset = al->addr - sym->start;
525 else
526 offset = al->addr - al->map->start - sym->start;
527
528 return offset;
529 }
530
531 static int get_symoff(struct symbol *sym, struct addr_location *al,
532 bool print_off, char *bf, int size)
533 {
534 unsigned long offset;
535
536 if (!sym || !sym->name[0])
537 return scnprintf(bf, size, "%s", "[unknown]");
538
539 if (!print_off)
540 return scnprintf(bf, size, "%s", sym->name);
541
542 offset = get_offset(sym, al);
543
544 return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
545 }
546
547 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
548 {
549 if (!flags->mispred && !flags->predicted)
550 return scnprintf(bf, size, "%s", "-");
551
552 if (flags->mispred)
553 return scnprintf(bf, size, "%s", "M");
554
555 return scnprintf(bf, size, "%s", "P");
556 }
557
558 static PyObject *python_process_brstacksym(struct perf_sample *sample,
559 struct thread *thread)
560 {
561 struct branch_stack *br = sample->branch_stack;
562 PyObject *pylist;
563 u64 i;
564 char bf[512];
565 struct addr_location al;
566
567 pylist = PyList_New(0);
568 if (!pylist)
569 Py_FatalError("couldn't create Python list");
570
571 if (!(br && br->nr))
572 goto exit;
573
574 for (i = 0; i < br->nr; i++) {
575 PyObject *pyelem;
576
577 pyelem = PyDict_New();
578 if (!pyelem)
579 Py_FatalError("couldn't create Python dictionary");
580
581 thread__find_symbol_fb(thread, sample->cpumode,
582 br->entries[i].from, &al);
583 get_symoff(al.sym, &al, true, bf, sizeof(bf));
584 pydict_set_item_string_decref(pyelem, "from",
585 _PyUnicode_FromString(bf));
586
587 thread__find_symbol_fb(thread, sample->cpumode,
588 br->entries[i].to, &al);
589 get_symoff(al.sym, &al, true, bf, sizeof(bf));
590 pydict_set_item_string_decref(pyelem, "to",
591 _PyUnicode_FromString(bf));
592
593 get_br_mspred(&br->entries[i].flags, bf, sizeof(bf));
594 pydict_set_item_string_decref(pyelem, "pred",
595 _PyUnicode_FromString(bf));
596
597 if (br->entries[i].flags.in_tx) {
598 pydict_set_item_string_decref(pyelem, "in_tx",
599 _PyUnicode_FromString("X"));
600 } else {
601 pydict_set_item_string_decref(pyelem, "in_tx",
602 _PyUnicode_FromString("-"));
603 }
604
605 if (br->entries[i].flags.abort) {
606 pydict_set_item_string_decref(pyelem, "abort",
607 _PyUnicode_FromString("A"));
608 } else {
609 pydict_set_item_string_decref(pyelem, "abort",
610 _PyUnicode_FromString("-"));
611 }
612
613 PyList_Append(pylist, pyelem);
614 Py_DECREF(pyelem);
615 }
616
617 exit:
618 return pylist;
619 }
620
621 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value)
622 {
623 PyObject *t;
624
625 t = PyTuple_New(2);
626 if (!t)
627 Py_FatalError("couldn't create Python tuple");
628 PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
629 PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
630 return t;
631 }
632
633 static void set_sample_read_in_dict(PyObject *dict_sample,
634 struct perf_sample *sample,
635 struct perf_evsel *evsel)
636 {
637 u64 read_format = evsel->attr.read_format;
638 PyObject *values;
639 unsigned int i;
640
641 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
642 pydict_set_item_string_decref(dict_sample, "time_enabled",
643 PyLong_FromUnsignedLongLong(sample->read.time_enabled));
644 }
645
646 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
647 pydict_set_item_string_decref(dict_sample, "time_running",
648 PyLong_FromUnsignedLongLong(sample->read.time_running));
649 }
650
651 if (read_format & PERF_FORMAT_GROUP)
652 values = PyList_New(sample->read.group.nr);
653 else
654 values = PyList_New(1);
655
656 if (!values)
657 Py_FatalError("couldn't create Python list");
658
659 if (read_format & PERF_FORMAT_GROUP) {
660 for (i = 0; i < sample->read.group.nr; i++) {
661 PyObject *t = get_sample_value_as_tuple(&sample->read.group.values[i]);
662 PyList_SET_ITEM(values, i, t);
663 }
664 } else {
665 PyObject *t = get_sample_value_as_tuple(&sample->read.one);
666 PyList_SET_ITEM(values, 0, t);
667 }
668 pydict_set_item_string_decref(dict_sample, "values", values);
669 }
670
671 static void set_sample_datasrc_in_dict(PyObject *dict,
672 struct perf_sample *sample)
673 {
674 struct mem_info mi = { .data_src.val = sample->data_src };
675 char decode[100];
676
677 pydict_set_item_string_decref(dict, "datasrc",
678 PyLong_FromUnsignedLongLong(sample->data_src));
679
680 perf_script__meminfo_scnprintf(decode, 100, &mi);
681
682 pydict_set_item_string_decref(dict, "datasrc_decode",
683 _PyUnicode_FromString(decode));
684 }
685
686 static int regs_map(struct regs_dump *regs, uint64_t mask, char *bf, int size)
687 {
688 unsigned int i = 0, r;
689 int printed = 0;
690
691 bf[0] = 0;
692
693 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
694 u64 val = regs->regs[i++];
695
696 printed += scnprintf(bf + printed, size - printed,
697 "%5s:0x%" PRIx64 " ",
698 perf_reg_name(r), val);
699 }
700
701 return printed;
702 }
703
704 static void set_regs_in_dict(PyObject *dict,
705 struct perf_sample *sample,
706 struct perf_evsel *evsel)
707 {
708 struct perf_event_attr *attr = &evsel->attr;
709 char bf[512];
710
711 regs_map(&sample->intr_regs, attr->sample_regs_intr, bf, sizeof(bf));
712
713 pydict_set_item_string_decref(dict, "iregs",
714 _PyUnicode_FromString(bf));
715
716 regs_map(&sample->user_regs, attr->sample_regs_user, bf, sizeof(bf));
717
718 pydict_set_item_string_decref(dict, "uregs",
719 _PyUnicode_FromString(bf));
720 }
721
722 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
723 struct perf_evsel *evsel,
724 struct addr_location *al,
725 PyObject *callchain)
726 {
727 PyObject *dict, *dict_sample, *brstack, *brstacksym;
728
729 dict = PyDict_New();
730 if (!dict)
731 Py_FatalError("couldn't create Python dictionary");
732
733 dict_sample = PyDict_New();
734 if (!dict_sample)
735 Py_FatalError("couldn't create Python dictionary");
736
737 pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(perf_evsel__name(evsel)));
738 pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->attr, sizeof(evsel->attr)));
739
740 pydict_set_item_string_decref(dict_sample, "pid",
741 _PyLong_FromLong(sample->pid));
742 pydict_set_item_string_decref(dict_sample, "tid",
743 _PyLong_FromLong(sample->tid));
744 pydict_set_item_string_decref(dict_sample, "cpu",
745 _PyLong_FromLong(sample->cpu));
746 pydict_set_item_string_decref(dict_sample, "ip",
747 PyLong_FromUnsignedLongLong(sample->ip));
748 pydict_set_item_string_decref(dict_sample, "time",
749 PyLong_FromUnsignedLongLong(sample->time));
750 pydict_set_item_string_decref(dict_sample, "period",
751 PyLong_FromUnsignedLongLong(sample->period));
752 pydict_set_item_string_decref(dict_sample, "phys_addr",
753 PyLong_FromUnsignedLongLong(sample->phys_addr));
754 pydict_set_item_string_decref(dict_sample, "addr",
755 PyLong_FromUnsignedLongLong(sample->addr));
756 set_sample_read_in_dict(dict_sample, sample, evsel);
757 pydict_set_item_string_decref(dict_sample, "weight",
758 PyLong_FromUnsignedLongLong(sample->weight));
759 pydict_set_item_string_decref(dict_sample, "transaction",
760 PyLong_FromUnsignedLongLong(sample->transaction));
761 set_sample_datasrc_in_dict(dict_sample, sample);
762 pydict_set_item_string_decref(dict, "sample", dict_sample);
763
764 pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
765 (const char *)sample->raw_data, sample->raw_size));
766 pydict_set_item_string_decref(dict, "comm",
767 _PyUnicode_FromString(thread__comm_str(al->thread)));
768 if (al->map) {
769 pydict_set_item_string_decref(dict, "dso",
770 _PyUnicode_FromString(al->map->dso->name));
771 }
772 if (al->sym) {
773 pydict_set_item_string_decref(dict, "symbol",
774 _PyUnicode_FromString(al->sym->name));
775 }
776
777 pydict_set_item_string_decref(dict, "callchain", callchain);
778
779 brstack = python_process_brstack(sample, al->thread);
780 pydict_set_item_string_decref(dict, "brstack", brstack);
781
782 brstacksym = python_process_brstacksym(sample, al->thread);
783 pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
784
785 set_regs_in_dict(dict, sample, evsel);
786
787 return dict;
788 }
789
790 static void python_process_tracepoint(struct perf_sample *sample,
791 struct perf_evsel *evsel,
792 struct addr_location *al)
793 {
794 struct tep_event *event = evsel->tp_format;
795 PyObject *handler, *context, *t, *obj = NULL, *callchain;
796 PyObject *dict = NULL, *all_entries_dict = NULL;
797 static char handler_name[256];
798 struct tep_format_field *field;
799 unsigned long s, ns;
800 unsigned n = 0;
801 int pid;
802 int cpu = sample->cpu;
803 void *data = sample->raw_data;
804 unsigned long long nsecs = sample->time;
805 const char *comm = thread__comm_str(al->thread);
806 const char *default_handler_name = "trace_unhandled";
807
808 if (!event) {
809 snprintf(handler_name, sizeof(handler_name),
810 "ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
811 Py_FatalError(handler_name);
812 }
813
814 pid = raw_field_value(event, "common_pid", data);
815
816 sprintf(handler_name, "%s__%s", event->system, event->name);
817
818 if (!test_and_set_bit(event->id, events_defined))
819 define_event_symbols(event, handler_name, event->print_fmt.args);
820
821 handler = get_handler(handler_name);
822 if (!handler) {
823 handler = get_handler(default_handler_name);
824 if (!handler)
825 return;
826 dict = PyDict_New();
827 if (!dict)
828 Py_FatalError("couldn't create Python dict");
829 }
830
831 t = PyTuple_New(MAX_FIELDS);
832 if (!t)
833 Py_FatalError("couldn't create Python tuple");
834
835
836 s = nsecs / NSEC_PER_SEC;
837 ns = nsecs - s * NSEC_PER_SEC;
838
839 scripting_context->event_data = data;
840 scripting_context->pevent = evsel->tp_format->pevent;
841
842 context = _PyCapsule_New(scripting_context, NULL, NULL);
843
844 PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
845 PyTuple_SetItem(t, n++, context);
846
847 /* ip unwinding */
848 callchain = python_process_callchain(sample, evsel, al);
849 /* Need an additional reference for the perf_sample dict */
850 Py_INCREF(callchain);
851
852 if (!dict) {
853 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
854 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
855 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
856 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
857 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
858 PyTuple_SetItem(t, n++, callchain);
859 } else {
860 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
861 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
862 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
863 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
864 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
865 pydict_set_item_string_decref(dict, "common_callchain", callchain);
866 }
867 for (field = event->format.fields; field; field = field->next) {
868 unsigned int offset, len;
869 unsigned long long val;
870
871 if (field->flags & TEP_FIELD_IS_ARRAY) {
872 offset = field->offset;
873 len = field->size;
874 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
875 val = tep_read_number(scripting_context->pevent,
876 data + offset, len);
877 offset = val;
878 len = offset >> 16;
879 offset &= 0xffff;
880 }
881 if (field->flags & TEP_FIELD_IS_STRING &&
882 is_printable_array(data + offset, len)) {
883 obj = _PyUnicode_FromString((char *) data + offset);
884 } else {
885 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
886 field->flags &= ~TEP_FIELD_IS_STRING;
887 }
888 } else { /* FIELD_IS_NUMERIC */
889 obj = get_field_numeric_entry(event, field, data);
890 }
891 if (!dict)
892 PyTuple_SetItem(t, n++, obj);
893 else
894 pydict_set_item_string_decref(dict, field->name, obj);
895
896 }
897
898 if (dict)
899 PyTuple_SetItem(t, n++, dict);
900
901 if (get_argument_count(handler) == (int) n + 1) {
902 all_entries_dict = get_perf_sample_dict(sample, evsel, al,
903 callchain);
904 PyTuple_SetItem(t, n++, all_entries_dict);
905 } else {
906 Py_DECREF(callchain);
907 }
908
909 if (_PyTuple_Resize(&t, n) == -1)
910 Py_FatalError("error resizing Python tuple");
911
912 if (!dict)
913 call_object(handler, t, handler_name);
914 else
915 call_object(handler, t, default_handler_name);
916
917 Py_DECREF(t);
918 }
919
920 static PyObject *tuple_new(unsigned int sz)
921 {
922 PyObject *t;
923
924 t = PyTuple_New(sz);
925 if (!t)
926 Py_FatalError("couldn't create Python tuple");
927 return t;
928 }
929
930 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
931 {
932 #if BITS_PER_LONG == 64
933 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
934 #endif
935 #if BITS_PER_LONG == 32
936 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
937 #endif
938 }
939
940 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
941 {
942 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
943 }
944
945 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
946 {
947 return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
948 }
949
950 static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
951 {
952 struct tables *tables = container_of(dbe, struct tables, dbe);
953 PyObject *t;
954
955 t = tuple_new(2);
956
957 tuple_set_u64(t, 0, evsel->db_id);
958 tuple_set_string(t, 1, perf_evsel__name(evsel));
959
960 call_object(tables->evsel_handler, t, "evsel_table");
961
962 Py_DECREF(t);
963
964 return 0;
965 }
966
967 static int python_export_machine(struct db_export *dbe,
968 struct machine *machine)
969 {
970 struct tables *tables = container_of(dbe, struct tables, dbe);
971 PyObject *t;
972
973 t = tuple_new(3);
974
975 tuple_set_u64(t, 0, machine->db_id);
976 tuple_set_s32(t, 1, machine->pid);
977 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
978
979 call_object(tables->machine_handler, t, "machine_table");
980
981 Py_DECREF(t);
982
983 return 0;
984 }
985
986 static int python_export_thread(struct db_export *dbe, struct thread *thread,
987 u64 main_thread_db_id, struct machine *machine)
988 {
989 struct tables *tables = container_of(dbe, struct tables, dbe);
990 PyObject *t;
991
992 t = tuple_new(5);
993
994 tuple_set_u64(t, 0, thread->db_id);
995 tuple_set_u64(t, 1, machine->db_id);
996 tuple_set_u64(t, 2, main_thread_db_id);
997 tuple_set_s32(t, 3, thread->pid_);
998 tuple_set_s32(t, 4, thread->tid);
999
1000 call_object(tables->thread_handler, t, "thread_table");
1001
1002 Py_DECREF(t);
1003
1004 return 0;
1005 }
1006
1007 static int python_export_comm(struct db_export *dbe, struct comm *comm)
1008 {
1009 struct tables *tables = container_of(dbe, struct tables, dbe);
1010 PyObject *t;
1011
1012 t = tuple_new(2);
1013
1014 tuple_set_u64(t, 0, comm->db_id);
1015 tuple_set_string(t, 1, comm__str(comm));
1016
1017 call_object(tables->comm_handler, t, "comm_table");
1018
1019 Py_DECREF(t);
1020
1021 return 0;
1022 }
1023
1024 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1025 struct comm *comm, struct thread *thread)
1026 {
1027 struct tables *tables = container_of(dbe, struct tables, dbe);
1028 PyObject *t;
1029
1030 t = tuple_new(3);
1031
1032 tuple_set_u64(t, 0, db_id);
1033 tuple_set_u64(t, 1, comm->db_id);
1034 tuple_set_u64(t, 2, thread->db_id);
1035
1036 call_object(tables->comm_thread_handler, t, "comm_thread_table");
1037
1038 Py_DECREF(t);
1039
1040 return 0;
1041 }
1042
1043 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1044 struct machine *machine)
1045 {
1046 struct tables *tables = container_of(dbe, struct tables, dbe);
1047 char sbuild_id[SBUILD_ID_SIZE];
1048 PyObject *t;
1049
1050 build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
1051
1052 t = tuple_new(5);
1053
1054 tuple_set_u64(t, 0, dso->db_id);
1055 tuple_set_u64(t, 1, machine->db_id);
1056 tuple_set_string(t, 2, dso->short_name);
1057 tuple_set_string(t, 3, dso->long_name);
1058 tuple_set_string(t, 4, sbuild_id);
1059
1060 call_object(tables->dso_handler, t, "dso_table");
1061
1062 Py_DECREF(t);
1063
1064 return 0;
1065 }
1066
1067 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1068 struct dso *dso)
1069 {
1070 struct tables *tables = container_of(dbe, struct tables, dbe);
1071 u64 *sym_db_id = symbol__priv(sym);
1072 PyObject *t;
1073
1074 t = tuple_new(6);
1075
1076 tuple_set_u64(t, 0, *sym_db_id);
1077 tuple_set_u64(t, 1, dso->db_id);
1078 tuple_set_u64(t, 2, sym->start);
1079 tuple_set_u64(t, 3, sym->end);
1080 tuple_set_s32(t, 4, sym->binding);
1081 tuple_set_string(t, 5, sym->name);
1082
1083 call_object(tables->symbol_handler, t, "symbol_table");
1084
1085 Py_DECREF(t);
1086
1087 return 0;
1088 }
1089
1090 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1091 const char *name)
1092 {
1093 struct tables *tables = container_of(dbe, struct tables, dbe);
1094 PyObject *t;
1095
1096 t = tuple_new(2);
1097
1098 tuple_set_s32(t, 0, branch_type);
1099 tuple_set_string(t, 1, name);
1100
1101 call_object(tables->branch_type_handler, t, "branch_type_table");
1102
1103 Py_DECREF(t);
1104
1105 return 0;
1106 }
1107
1108 static int python_export_sample(struct db_export *dbe,
1109 struct export_sample *es)
1110 {
1111 struct tables *tables = container_of(dbe, struct tables, dbe);
1112 PyObject *t;
1113
1114 t = tuple_new(22);
1115
1116 tuple_set_u64(t, 0, es->db_id);
1117 tuple_set_u64(t, 1, es->evsel->db_id);
1118 tuple_set_u64(t, 2, es->al->machine->db_id);
1119 tuple_set_u64(t, 3, es->al->thread->db_id);
1120 tuple_set_u64(t, 4, es->comm_db_id);
1121 tuple_set_u64(t, 5, es->dso_db_id);
1122 tuple_set_u64(t, 6, es->sym_db_id);
1123 tuple_set_u64(t, 7, es->offset);
1124 tuple_set_u64(t, 8, es->sample->ip);
1125 tuple_set_u64(t, 9, es->sample->time);
1126 tuple_set_s32(t, 10, es->sample->cpu);
1127 tuple_set_u64(t, 11, es->addr_dso_db_id);
1128 tuple_set_u64(t, 12, es->addr_sym_db_id);
1129 tuple_set_u64(t, 13, es->addr_offset);
1130 tuple_set_u64(t, 14, es->sample->addr);
1131 tuple_set_u64(t, 15, es->sample->period);
1132 tuple_set_u64(t, 16, es->sample->weight);
1133 tuple_set_u64(t, 17, es->sample->transaction);
1134 tuple_set_u64(t, 18, es->sample->data_src);
1135 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1136 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1137 tuple_set_u64(t, 21, es->call_path_id);
1138
1139 call_object(tables->sample_handler, t, "sample_table");
1140
1141 Py_DECREF(t);
1142
1143 return 0;
1144 }
1145
1146 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1147 {
1148 struct tables *tables = container_of(dbe, struct tables, dbe);
1149 PyObject *t;
1150 u64 parent_db_id, sym_db_id;
1151
1152 parent_db_id = cp->parent ? cp->parent->db_id : 0;
1153 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1154
1155 t = tuple_new(4);
1156
1157 tuple_set_u64(t, 0, cp->db_id);
1158 tuple_set_u64(t, 1, parent_db_id);
1159 tuple_set_u64(t, 2, sym_db_id);
1160 tuple_set_u64(t, 3, cp->ip);
1161
1162 call_object(tables->call_path_handler, t, "call_path_table");
1163
1164 Py_DECREF(t);
1165
1166 return 0;
1167 }
1168
1169 static int python_export_call_return(struct db_export *dbe,
1170 struct call_return *cr)
1171 {
1172 struct tables *tables = container_of(dbe, struct tables, dbe);
1173 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1174 PyObject *t;
1175
1176 t = tuple_new(12);
1177
1178 tuple_set_u64(t, 0, cr->db_id);
1179 tuple_set_u64(t, 1, cr->thread->db_id);
1180 tuple_set_u64(t, 2, comm_db_id);
1181 tuple_set_u64(t, 3, cr->cp->db_id);
1182 tuple_set_u64(t, 4, cr->call_time);
1183 tuple_set_u64(t, 5, cr->return_time);
1184 tuple_set_u64(t, 6, cr->branch_count);
1185 tuple_set_u64(t, 7, cr->call_ref);
1186 tuple_set_u64(t, 8, cr->return_ref);
1187 tuple_set_u64(t, 9, cr->cp->parent->db_id);
1188 tuple_set_s32(t, 10, cr->flags);
1189 tuple_set_u64(t, 11, cr->parent_db_id);
1190
1191 call_object(tables->call_return_handler, t, "call_return_table");
1192
1193 Py_DECREF(t);
1194
1195 return 0;
1196 }
1197
1198 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1199 void *data)
1200 {
1201 struct db_export *dbe = data;
1202
1203 return db_export__call_return(dbe, cr, parent_db_id);
1204 }
1205
1206 static void python_process_general_event(struct perf_sample *sample,
1207 struct perf_evsel *evsel,
1208 struct addr_location *al)
1209 {
1210 PyObject *handler, *t, *dict, *callchain;
1211 static char handler_name[64];
1212 unsigned n = 0;
1213
1214 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1215
1216 handler = get_handler(handler_name);
1217 if (!handler)
1218 return;
1219
1220 /*
1221 * Use the MAX_FIELDS to make the function expandable, though
1222 * currently there is only one item for the tuple.
1223 */
1224 t = PyTuple_New(MAX_FIELDS);
1225 if (!t)
1226 Py_FatalError("couldn't create Python tuple");
1227
1228 /* ip unwinding */
1229 callchain = python_process_callchain(sample, evsel, al);
1230 dict = get_perf_sample_dict(sample, evsel, al, callchain);
1231
1232 PyTuple_SetItem(t, n++, dict);
1233 if (_PyTuple_Resize(&t, n) == -1)
1234 Py_FatalError("error resizing Python tuple");
1235
1236 call_object(handler, t, handler_name);
1237
1238 Py_DECREF(t);
1239 }
1240
1241 static void python_process_event(union perf_event *event,
1242 struct perf_sample *sample,
1243 struct perf_evsel *evsel,
1244 struct addr_location *al)
1245 {
1246 struct tables *tables = &tables_global;
1247
1248 switch (evsel->attr.type) {
1249 case PERF_TYPE_TRACEPOINT:
1250 python_process_tracepoint(sample, evsel, al);
1251 break;
1252 /* Reserve for future process_hw/sw/raw APIs */
1253 default:
1254 if (tables->db_export_mode)
1255 db_export__sample(&tables->dbe, event, sample, evsel, al);
1256 else
1257 python_process_general_event(sample, evsel, al);
1258 }
1259 }
1260
1261 static void get_handler_name(char *str, size_t size,
1262 struct perf_evsel *evsel)
1263 {
1264 char *p = str;
1265
1266 scnprintf(str, size, "stat__%s", perf_evsel__name(evsel));
1267
1268 while ((p = strchr(p, ':'))) {
1269 *p = '_';
1270 p++;
1271 }
1272 }
1273
1274 static void
1275 process_stat(struct perf_evsel *counter, int cpu, int thread, u64 tstamp,
1276 struct perf_counts_values *count)
1277 {
1278 PyObject *handler, *t;
1279 static char handler_name[256];
1280 int n = 0;
1281
1282 t = PyTuple_New(MAX_FIELDS);
1283 if (!t)
1284 Py_FatalError("couldn't create Python tuple");
1285
1286 get_handler_name(handler_name, sizeof(handler_name),
1287 counter);
1288
1289 handler = get_handler(handler_name);
1290 if (!handler) {
1291 pr_debug("can't find python handler %s\n", handler_name);
1292 return;
1293 }
1294
1295 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1296 PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1297
1298 tuple_set_u64(t, n++, tstamp);
1299 tuple_set_u64(t, n++, count->val);
1300 tuple_set_u64(t, n++, count->ena);
1301 tuple_set_u64(t, n++, count->run);
1302
1303 if (_PyTuple_Resize(&t, n) == -1)
1304 Py_FatalError("error resizing Python tuple");
1305
1306 call_object(handler, t, handler_name);
1307
1308 Py_DECREF(t);
1309 }
1310
1311 static void python_process_stat(struct perf_stat_config *config,
1312 struct perf_evsel *counter, u64 tstamp)
1313 {
1314 struct thread_map *threads = counter->threads;
1315 struct cpu_map *cpus = counter->cpus;
1316 int cpu, thread;
1317
1318 if (config->aggr_mode == AGGR_GLOBAL) {
1319 process_stat(counter, -1, -1, tstamp,
1320 &counter->counts->aggr);
1321 return;
1322 }
1323
1324 for (thread = 0; thread < threads->nr; thread++) {
1325 for (cpu = 0; cpu < cpus->nr; cpu++) {
1326 process_stat(counter, cpus->map[cpu],
1327 thread_map__pid(threads, thread), tstamp,
1328 perf_counts(counter->counts, cpu, thread));
1329 }
1330 }
1331 }
1332
1333 static void python_process_stat_interval(u64 tstamp)
1334 {
1335 PyObject *handler, *t;
1336 static const char handler_name[] = "stat__interval";
1337 int n = 0;
1338
1339 t = PyTuple_New(MAX_FIELDS);
1340 if (!t)
1341 Py_FatalError("couldn't create Python tuple");
1342
1343 handler = get_handler(handler_name);
1344 if (!handler) {
1345 pr_debug("can't find python handler %s\n", handler_name);
1346 return;
1347 }
1348
1349 tuple_set_u64(t, n++, tstamp);
1350
1351 if (_PyTuple_Resize(&t, n) == -1)
1352 Py_FatalError("error resizing Python tuple");
1353
1354 call_object(handler, t, handler_name);
1355
1356 Py_DECREF(t);
1357 }
1358
1359 static int run_start_sub(void)
1360 {
1361 main_module = PyImport_AddModule("__main__");
1362 if (main_module == NULL)
1363 return -1;
1364 Py_INCREF(main_module);
1365
1366 main_dict = PyModule_GetDict(main_module);
1367 if (main_dict == NULL)
1368 goto error;
1369 Py_INCREF(main_dict);
1370
1371 try_call_object("trace_begin", NULL);
1372
1373 return 0;
1374
1375 error:
1376 Py_XDECREF(main_dict);
1377 Py_XDECREF(main_module);
1378 return -1;
1379 }
1380
1381 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
1382 tables->handler_name = get_handler(#table_name); \
1383 if (tables->handler_name) \
1384 tables->dbe.export_ ## name = python_export_ ## name; \
1385 } while (0)
1386
1387 #define SET_TABLE_HANDLER(name) \
1388 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1389
1390 static void set_table_handlers(struct tables *tables)
1391 {
1392 const char *perf_db_export_mode = "perf_db_export_mode";
1393 const char *perf_db_export_calls = "perf_db_export_calls";
1394 const char *perf_db_export_callchains = "perf_db_export_callchains";
1395 PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1396 bool export_calls = false;
1397 bool export_callchains = false;
1398 int ret;
1399
1400 memset(tables, 0, sizeof(struct tables));
1401 if (db_export__init(&tables->dbe))
1402 Py_FatalError("failed to initialize export");
1403
1404 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1405 if (!db_export_mode)
1406 return;
1407
1408 ret = PyObject_IsTrue(db_export_mode);
1409 if (ret == -1)
1410 handler_call_die(perf_db_export_mode);
1411 if (!ret)
1412 return;
1413
1414 /* handle export calls */
1415 tables->dbe.crp = NULL;
1416 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1417 if (db_export_calls) {
1418 ret = PyObject_IsTrue(db_export_calls);
1419 if (ret == -1)
1420 handler_call_die(perf_db_export_calls);
1421 export_calls = !!ret;
1422 }
1423
1424 if (export_calls) {
1425 tables->dbe.crp =
1426 call_return_processor__new(python_process_call_return,
1427 &tables->dbe);
1428 if (!tables->dbe.crp)
1429 Py_FatalError("failed to create calls processor");
1430 }
1431
1432 /* handle export callchains */
1433 tables->dbe.cpr = NULL;
1434 db_export_callchains = PyDict_GetItemString(main_dict,
1435 perf_db_export_callchains);
1436 if (db_export_callchains) {
1437 ret = PyObject_IsTrue(db_export_callchains);
1438 if (ret == -1)
1439 handler_call_die(perf_db_export_callchains);
1440 export_callchains = !!ret;
1441 }
1442
1443 if (export_callchains) {
1444 /*
1445 * Attempt to use the call path root from the call return
1446 * processor, if the call return processor is in use. Otherwise,
1447 * we allocate a new call path root. This prevents exporting
1448 * duplicate call path ids when both are in use simultaniously.
1449 */
1450 if (tables->dbe.crp)
1451 tables->dbe.cpr = tables->dbe.crp->cpr;
1452 else
1453 tables->dbe.cpr = call_path_root__new();
1454
1455 if (!tables->dbe.cpr)
1456 Py_FatalError("failed to create call path root");
1457 }
1458
1459 tables->db_export_mode = true;
1460 /*
1461 * Reserve per symbol space for symbol->db_id via symbol__priv()
1462 */
1463 symbol_conf.priv_size = sizeof(u64);
1464
1465 SET_TABLE_HANDLER(evsel);
1466 SET_TABLE_HANDLER(machine);
1467 SET_TABLE_HANDLER(thread);
1468 SET_TABLE_HANDLER(comm);
1469 SET_TABLE_HANDLER(comm_thread);
1470 SET_TABLE_HANDLER(dso);
1471 SET_TABLE_HANDLER(symbol);
1472 SET_TABLE_HANDLER(branch_type);
1473 SET_TABLE_HANDLER(sample);
1474 SET_TABLE_HANDLER(call_path);
1475 SET_TABLE_HANDLER(call_return);
1476 }
1477
1478 #if PY_MAJOR_VERSION < 3
1479 static void _free_command_line(const char **command_line, int num)
1480 {
1481 free(command_line);
1482 }
1483 #else
1484 static void _free_command_line(wchar_t **command_line, int num)
1485 {
1486 int i;
1487 for (i = 0; i < num; i++)
1488 PyMem_RawFree(command_line[i]);
1489 free(command_line);
1490 }
1491 #endif
1492
1493
1494 /*
1495 * Start trace script
1496 */
1497 static int python_start_script(const char *script, int argc, const char **argv)
1498 {
1499 struct tables *tables = &tables_global;
1500 PyMODINIT_FUNC (*initfunc)(void);
1501 #if PY_MAJOR_VERSION < 3
1502 const char **command_line;
1503 #else
1504 wchar_t **command_line;
1505 #endif
1506 /*
1507 * Use a non-const name variable to cope with python 2.6's
1508 * PyImport_AppendInittab prototype
1509 */
1510 char buf[PATH_MAX], name[19] = "perf_trace_context";
1511 int i, err = 0;
1512 FILE *fp;
1513
1514 #if PY_MAJOR_VERSION < 3
1515 initfunc = initperf_trace_context;
1516 command_line = malloc((argc + 1) * sizeof(const char *));
1517 command_line[0] = script;
1518 for (i = 1; i < argc + 1; i++)
1519 command_line[i] = argv[i - 1];
1520 #else
1521 initfunc = PyInit_perf_trace_context;
1522 command_line = malloc((argc + 1) * sizeof(wchar_t *));
1523 command_line[0] = Py_DecodeLocale(script, NULL);
1524 for (i = 1; i < argc + 1; i++)
1525 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1526 #endif
1527
1528 PyImport_AppendInittab(name, initfunc);
1529 Py_Initialize();
1530
1531 #if PY_MAJOR_VERSION < 3
1532 PySys_SetArgv(argc + 1, (char **)command_line);
1533 #else
1534 PySys_SetArgv(argc + 1, command_line);
1535 #endif
1536
1537 fp = fopen(script, "r");
1538 if (!fp) {
1539 sprintf(buf, "Can't open python script \"%s\"", script);
1540 perror(buf);
1541 err = -1;
1542 goto error;
1543 }
1544
1545 err = PyRun_SimpleFile(fp, script);
1546 if (err) {
1547 fprintf(stderr, "Error running python script %s\n", script);
1548 goto error;
1549 }
1550
1551 err = run_start_sub();
1552 if (err) {
1553 fprintf(stderr, "Error starting python script %s\n", script);
1554 goto error;
1555 }
1556
1557 set_table_handlers(tables);
1558
1559 if (tables->db_export_mode) {
1560 err = db_export__branch_types(&tables->dbe);
1561 if (err)
1562 goto error;
1563 }
1564
1565 _free_command_line(command_line, argc + 1);
1566
1567 return err;
1568 error:
1569 Py_Finalize();
1570 _free_command_line(command_line, argc + 1);
1571
1572 return err;
1573 }
1574
1575 static int python_flush_script(void)
1576 {
1577 struct tables *tables = &tables_global;
1578
1579 return db_export__flush(&tables->dbe);
1580 }
1581
1582 /*
1583 * Stop trace script
1584 */
1585 static int python_stop_script(void)
1586 {
1587 struct tables *tables = &tables_global;
1588
1589 try_call_object("trace_end", NULL);
1590
1591 db_export__exit(&tables->dbe);
1592
1593 Py_XDECREF(main_dict);
1594 Py_XDECREF(main_module);
1595 Py_Finalize();
1596
1597 return 0;
1598 }
1599
1600 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1601 {
1602 struct tep_event *event = NULL;
1603 struct tep_format_field *f;
1604 char fname[PATH_MAX];
1605 int not_first, count;
1606 FILE *ofp;
1607
1608 sprintf(fname, "%s.py", outfile);
1609 ofp = fopen(fname, "w");
1610 if (ofp == NULL) {
1611 fprintf(stderr, "couldn't open %s\n", fname);
1612 return -1;
1613 }
1614 fprintf(ofp, "# perf script event handlers, "
1615 "generated by perf script -g python\n");
1616
1617 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1618 " License version 2\n\n");
1619
1620 fprintf(ofp, "# The common_* event handler fields are the most useful "
1621 "fields common to\n");
1622
1623 fprintf(ofp, "# all events. They don't necessarily correspond to "
1624 "the 'common_*' fields\n");
1625
1626 fprintf(ofp, "# in the format files. Those fields not available as "
1627 "handler params can\n");
1628
1629 fprintf(ofp, "# be retrieved using Python functions of the form "
1630 "common_*(context).\n");
1631
1632 fprintf(ofp, "# See the perf-script-python Documentation for the list "
1633 "of available functions.\n\n");
1634
1635 fprintf(ofp, "from __future__ import print_function\n\n");
1636 fprintf(ofp, "import os\n");
1637 fprintf(ofp, "import sys\n\n");
1638
1639 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1640 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1641 fprintf(ofp, "\nfrom perf_trace_context import *\n");
1642 fprintf(ofp, "from Core import *\n\n\n");
1643
1644 fprintf(ofp, "def trace_begin():\n");
1645 fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
1646
1647 fprintf(ofp, "def trace_end():\n");
1648 fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
1649
1650 while ((event = trace_find_next_event(pevent, event))) {
1651 fprintf(ofp, "def %s__%s(", event->system, event->name);
1652 fprintf(ofp, "event_name, ");
1653 fprintf(ofp, "context, ");
1654 fprintf(ofp, "common_cpu,\n");
1655 fprintf(ofp, "\tcommon_secs, ");
1656 fprintf(ofp, "common_nsecs, ");
1657 fprintf(ofp, "common_pid, ");
1658 fprintf(ofp, "common_comm,\n\t");
1659 fprintf(ofp, "common_callchain, ");
1660
1661 not_first = 0;
1662 count = 0;
1663
1664 for (f = event->format.fields; f; f = f->next) {
1665 if (not_first++)
1666 fprintf(ofp, ", ");
1667 if (++count % 5 == 0)
1668 fprintf(ofp, "\n\t");
1669
1670 fprintf(ofp, "%s", f->name);
1671 }
1672 if (not_first++)
1673 fprintf(ofp, ", ");
1674 if (++count % 5 == 0)
1675 fprintf(ofp, "\n\t\t");
1676 fprintf(ofp, "perf_sample_dict");
1677
1678 fprintf(ofp, "):\n");
1679
1680 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1681 "common_secs, common_nsecs,\n\t\t\t"
1682 "common_pid, common_comm)\n\n");
1683
1684 fprintf(ofp, "\t\tprint(\"");
1685
1686 not_first = 0;
1687 count = 0;
1688
1689 for (f = event->format.fields; f; f = f->next) {
1690 if (not_first++)
1691 fprintf(ofp, ", ");
1692 if (count && count % 3 == 0) {
1693 fprintf(ofp, "\" \\\n\t\t\"");
1694 }
1695 count++;
1696
1697 fprintf(ofp, "%s=", f->name);
1698 if (f->flags & TEP_FIELD_IS_STRING ||
1699 f->flags & TEP_FIELD_IS_FLAG ||
1700 f->flags & TEP_FIELD_IS_ARRAY ||
1701 f->flags & TEP_FIELD_IS_SYMBOLIC)
1702 fprintf(ofp, "%%s");
1703 else if (f->flags & TEP_FIELD_IS_SIGNED)
1704 fprintf(ofp, "%%d");
1705 else
1706 fprintf(ofp, "%%u");
1707 }
1708
1709 fprintf(ofp, "\" %% \\\n\t\t(");
1710
1711 not_first = 0;
1712 count = 0;
1713
1714 for (f = event->format.fields; f; f = f->next) {
1715 if (not_first++)
1716 fprintf(ofp, ", ");
1717
1718 if (++count % 5 == 0)
1719 fprintf(ofp, "\n\t\t");
1720
1721 if (f->flags & TEP_FIELD_IS_FLAG) {
1722 if ((count - 1) % 5 != 0) {
1723 fprintf(ofp, "\n\t\t");
1724 count = 4;
1725 }
1726 fprintf(ofp, "flag_str(\"");
1727 fprintf(ofp, "%s__%s\", ", event->system,
1728 event->name);
1729 fprintf(ofp, "\"%s\", %s)", f->name,
1730 f->name);
1731 } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
1732 if ((count - 1) % 5 != 0) {
1733 fprintf(ofp, "\n\t\t");
1734 count = 4;
1735 }
1736 fprintf(ofp, "symbol_str(\"");
1737 fprintf(ofp, "%s__%s\", ", event->system,
1738 event->name);
1739 fprintf(ofp, "\"%s\", %s)", f->name,
1740 f->name);
1741 } else
1742 fprintf(ofp, "%s", f->name);
1743 }
1744
1745 fprintf(ofp, "))\n\n");
1746
1747 fprintf(ofp, "\t\tprint('Sample: {'+"
1748 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1749
1750 fprintf(ofp, "\t\tfor node in common_callchain:");
1751 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1752 fprintf(ofp, "\n\t\t\t\tprint(\"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name']))");
1753 fprintf(ofp, "\n\t\t\telse:");
1754 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
1755 fprintf(ofp, "\t\tprint()\n\n");
1756
1757 }
1758
1759 fprintf(ofp, "def trace_unhandled(event_name, context, "
1760 "event_fields_dict, perf_sample_dict):\n");
1761
1762 fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
1763 fprintf(ofp, "\t\tprint('Sample: {'+"
1764 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1765
1766 fprintf(ofp, "def print_header("
1767 "event_name, cpu, secs, nsecs, pid, comm):\n"
1768 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1769 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
1770
1771 fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
1772 "\treturn delimiter.join"
1773 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
1774
1775 fclose(ofp);
1776
1777 fprintf(stderr, "generated Python script: %s\n", fname);
1778
1779 return 0;
1780 }
1781
1782 struct scripting_ops python_scripting_ops = {
1783 .name = "Python",
1784 .start_script = python_start_script,
1785 .flush_script = python_flush_script,
1786 .stop_script = python_stop_script,
1787 .process_event = python_process_event,
1788 .process_stat = python_process_stat,
1789 .process_stat_interval = python_process_stat_interval,
1790 .generate_script = python_generate_script,
1791 };
Linux with added FPC-III support