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 "../build-id.h"
35 #include "../counts.h"
36 #include "../debug.h"
37 #include "../dso.h"
38 #include "../callchain.h"
39 #include "../env.h"
40 #include "../evsel.h"
41 #include "../event.h"
42 #include "../thread.h"
43 #include "../comm.h"
44 #include "../machine.h"
45 #include "../db-export.h"
46 #include "../thread-stack.h"
47 #include "../trace-event.h"
48 #include "../call-path.h"
49 #include "map.h"
50 #include "symbol.h"
51 #include "thread_map.h"
52 #include "print_binary.h"
53 #include "stat.h"
54 #include "mem-events.h"
55
56 #if PY_MAJOR_VERSION < 3
57 #define _PyUnicode_FromString(arg) \
58 PyString_FromString(arg)
59 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
60 PyString_FromStringAndSize((arg1), (arg2))
61 #define _PyBytes_FromStringAndSize(arg1, arg2) \
62 PyString_FromStringAndSize((arg1), (arg2))
63 #define _PyLong_FromLong(arg) \
64 PyInt_FromLong(arg)
65 #define _PyLong_AsLong(arg) \
66 PyInt_AsLong(arg)
67 #define _PyCapsule_New(arg1, arg2, arg3) \
68 PyCObject_FromVoidPtr((arg1), (arg2))
69
70 PyMODINIT_FUNC initperf_trace_context(void);
71 #else
72 #define _PyUnicode_FromString(arg) \
73 PyUnicode_FromString(arg)
74 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
75 PyUnicode_FromStringAndSize((arg1), (arg2))
76 #define _PyBytes_FromStringAndSize(arg1, arg2) \
77 PyBytes_FromStringAndSize((arg1), (arg2))
78 #define _PyLong_FromLong(arg) \
79 PyLong_FromLong(arg)
80 #define _PyLong_AsLong(arg) \
81 PyLong_AsLong(arg)
82 #define _PyCapsule_New(arg1, arg2, arg3) \
83 PyCapsule_New((arg1), (arg2), (arg3))
84
85 PyMODINIT_FUNC PyInit_perf_trace_context(void);
86 #endif
87
88 #define TRACE_EVENT_TYPE_MAX \
89 ((1 << (sizeof(unsigned short) * 8)) - 1)
90
91 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
92
93 #define MAX_FIELDS 64
94 #define N_COMMON_FIELDS 7
95
96 extern struct scripting_context *scripting_context;
97
98 static char *cur_field_name;
99 static int zero_flag_atom;
100
101 static PyObject *main_module, *main_dict;
102
103 struct tables {
104 struct db_export dbe;
105 PyObject *evsel_handler;
106 PyObject *machine_handler;
107 PyObject *thread_handler;
108 PyObject *comm_handler;
109 PyObject *comm_thread_handler;
110 PyObject *dso_handler;
111 PyObject *symbol_handler;
112 PyObject *branch_type_handler;
113 PyObject *sample_handler;
114 PyObject *call_path_handler;
115 PyObject *call_return_handler;
116 PyObject *synth_handler;
117 PyObject *context_switch_handler;
118 bool db_export_mode;
119 };
120
121 static struct tables tables_global;
122
123 static void handler_call_die(const char *handler_name) __noreturn;
handler_call_die(const char * handler_name)124 static void handler_call_die(const char *handler_name)
125 {
126 PyErr_Print();
127 Py_FatalError("problem in Python trace event handler");
128 // Py_FatalError does not return
129 // but we have to make the compiler happy
130 abort();
131 }
132
133 /*
134 * Insert val into the dictionary and decrement the reference counter.
135 * This is necessary for dictionaries since PyDict_SetItemString() does not
136 * steal a reference, as opposed to PyTuple_SetItem().
137 */
pydict_set_item_string_decref(PyObject * dict,const char * key,PyObject * val)138 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
139 {
140 PyDict_SetItemString(dict, key, val);
141 Py_DECREF(val);
142 }
143
get_handler(const char * handler_name)144 static PyObject *get_handler(const char *handler_name)
145 {
146 PyObject *handler;
147
148 handler = PyDict_GetItemString(main_dict, handler_name);
149 if (handler && !PyCallable_Check(handler))
150 return NULL;
151 return handler;
152 }
153
get_argument_count(PyObject * handler)154 static int get_argument_count(PyObject *handler)
155 {
156 int arg_count = 0;
157
158 /*
159 * The attribute for the code object is func_code in Python 2,
160 * whereas it is __code__ in Python 3.0+.
161 */
162 PyObject *code_obj = PyObject_GetAttrString(handler,
163 "func_code");
164 if (PyErr_Occurred()) {
165 PyErr_Clear();
166 code_obj = PyObject_GetAttrString(handler,
167 "__code__");
168 }
169 PyErr_Clear();
170 if (code_obj) {
171 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
172 "co_argcount");
173 if (arg_count_obj) {
174 arg_count = (int) _PyLong_AsLong(arg_count_obj);
175 Py_DECREF(arg_count_obj);
176 }
177 Py_DECREF(code_obj);
178 }
179 return arg_count;
180 }
181
call_object(PyObject * handler,PyObject * args,const char * die_msg)182 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
183 {
184 PyObject *retval;
185
186 retval = PyObject_CallObject(handler, args);
187 if (retval == NULL)
188 handler_call_die(die_msg);
189 Py_DECREF(retval);
190 }
191
try_call_object(const char * handler_name,PyObject * args)192 static void try_call_object(const char *handler_name, PyObject *args)
193 {
194 PyObject *handler;
195
196 handler = get_handler(handler_name);
197 if (handler)
198 call_object(handler, args, handler_name);
199 }
200
define_value(enum tep_print_arg_type field_type,const char * ev_name,const char * field_name,const char * field_value,const char * field_str)201 static void define_value(enum tep_print_arg_type field_type,
202 const char *ev_name,
203 const char *field_name,
204 const char *field_value,
205 const char *field_str)
206 {
207 const char *handler_name = "define_flag_value";
208 PyObject *t;
209 unsigned long long value;
210 unsigned n = 0;
211
212 if (field_type == TEP_PRINT_SYMBOL)
213 handler_name = "define_symbolic_value";
214
215 t = PyTuple_New(4);
216 if (!t)
217 Py_FatalError("couldn't create Python tuple");
218
219 value = eval_flag(field_value);
220
221 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
222 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
223 PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
224 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
225
226 try_call_object(handler_name, t);
227
228 Py_DECREF(t);
229 }
230
define_values(enum tep_print_arg_type field_type,struct tep_print_flag_sym * field,const char * ev_name,const char * field_name)231 static void define_values(enum tep_print_arg_type field_type,
232 struct tep_print_flag_sym *field,
233 const char *ev_name,
234 const char *field_name)
235 {
236 define_value(field_type, ev_name, field_name, field->value,
237 field->str);
238
239 if (field->next)
240 define_values(field_type, field->next, ev_name, field_name);
241 }
242
define_field(enum tep_print_arg_type field_type,const char * ev_name,const char * field_name,const char * delim)243 static void define_field(enum tep_print_arg_type field_type,
244 const char *ev_name,
245 const char *field_name,
246 const char *delim)
247 {
248 const char *handler_name = "define_flag_field";
249 PyObject *t;
250 unsigned n = 0;
251
252 if (field_type == TEP_PRINT_SYMBOL)
253 handler_name = "define_symbolic_field";
254
255 if (field_type == TEP_PRINT_FLAGS)
256 t = PyTuple_New(3);
257 else
258 t = PyTuple_New(2);
259 if (!t)
260 Py_FatalError("couldn't create Python tuple");
261
262 PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
263 PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
264 if (field_type == TEP_PRINT_FLAGS)
265 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
266
267 try_call_object(handler_name, t);
268
269 Py_DECREF(t);
270 }
271
define_event_symbols(struct tep_event * event,const char * ev_name,struct tep_print_arg * args)272 static void define_event_symbols(struct tep_event *event,
273 const char *ev_name,
274 struct tep_print_arg *args)
275 {
276 if (args == NULL)
277 return;
278
279 switch (args->type) {
280 case TEP_PRINT_NULL:
281 break;
282 case TEP_PRINT_ATOM:
283 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
284 args->atom.atom);
285 zero_flag_atom = 0;
286 break;
287 case TEP_PRINT_FIELD:
288 free(cur_field_name);
289 cur_field_name = strdup(args->field.name);
290 break;
291 case TEP_PRINT_FLAGS:
292 define_event_symbols(event, ev_name, args->flags.field);
293 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
294 args->flags.delim);
295 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
296 cur_field_name);
297 break;
298 case TEP_PRINT_SYMBOL:
299 define_event_symbols(event, ev_name, args->symbol.field);
300 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
301 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
302 cur_field_name);
303 break;
304 case TEP_PRINT_HEX:
305 case TEP_PRINT_HEX_STR:
306 define_event_symbols(event, ev_name, args->hex.field);
307 define_event_symbols(event, ev_name, args->hex.size);
308 break;
309 case TEP_PRINT_INT_ARRAY:
310 define_event_symbols(event, ev_name, args->int_array.field);
311 define_event_symbols(event, ev_name, args->int_array.count);
312 define_event_symbols(event, ev_name, args->int_array.el_size);
313 break;
314 case TEP_PRINT_STRING:
315 break;
316 case TEP_PRINT_TYPE:
317 define_event_symbols(event, ev_name, args->typecast.item);
318 break;
319 case TEP_PRINT_OP:
320 if (strcmp(args->op.op, ":") == 0)
321 zero_flag_atom = 1;
322 define_event_symbols(event, ev_name, args->op.left);
323 define_event_symbols(event, ev_name, args->op.right);
324 break;
325 default:
326 /* gcc warns for these? */
327 case TEP_PRINT_BSTRING:
328 case TEP_PRINT_DYNAMIC_ARRAY:
329 case TEP_PRINT_DYNAMIC_ARRAY_LEN:
330 case TEP_PRINT_FUNC:
331 case TEP_PRINT_BITMASK:
332 /* we should warn... */
333 return;
334 }
335
336 if (args->next)
337 define_event_symbols(event, ev_name, args->next);
338 }
339
get_field_numeric_entry(struct tep_event * event,struct tep_format_field * field,void * data)340 static PyObject *get_field_numeric_entry(struct tep_event *event,
341 struct tep_format_field *field, void *data)
342 {
343 bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
344 PyObject *obj = NULL, *list = NULL;
345 unsigned long long val;
346 unsigned int item_size, n_items, i;
347
348 if (is_array) {
349 list = PyList_New(field->arraylen);
350 item_size = field->size / field->arraylen;
351 n_items = field->arraylen;
352 } else {
353 item_size = field->size;
354 n_items = 1;
355 }
356
357 for (i = 0; i < n_items; i++) {
358
359 val = read_size(event, data + field->offset + i * item_size,
360 item_size);
361 if (field->flags & TEP_FIELD_IS_SIGNED) {
362 if ((long long)val >= LONG_MIN &&
363 (long long)val <= LONG_MAX)
364 obj = _PyLong_FromLong(val);
365 else
366 obj = PyLong_FromLongLong(val);
367 } else {
368 if (val <= LONG_MAX)
369 obj = _PyLong_FromLong(val);
370 else
371 obj = PyLong_FromUnsignedLongLong(val);
372 }
373 if (is_array)
374 PyList_SET_ITEM(list, i, obj);
375 }
376 if (is_array)
377 obj = list;
378 return obj;
379 }
380
get_dsoname(struct map * map)381 static const char *get_dsoname(struct map *map)
382 {
383 const char *dsoname = "[unknown]";
384
385 if (map && map->dso) {
386 if (symbol_conf.show_kernel_path && map->dso->long_name)
387 dsoname = map->dso->long_name;
388 else
389 dsoname = map->dso->name;
390 }
391
392 return dsoname;
393 }
394
get_offset(struct symbol * sym,struct addr_location * al)395 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
396 {
397 unsigned long offset;
398
399 if (al->addr < sym->end)
400 offset = al->addr - sym->start;
401 else
402 offset = al->addr - al->map->start - sym->start;
403
404 return offset;
405 }
406
python_process_callchain(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al)407 static PyObject *python_process_callchain(struct perf_sample *sample,
408 struct evsel *evsel,
409 struct addr_location *al)
410 {
411 PyObject *pylist;
412
413 pylist = PyList_New(0);
414 if (!pylist)
415 Py_FatalError("couldn't create Python list");
416
417 if (!symbol_conf.use_callchain || !sample->callchain)
418 goto exit;
419
420 if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
421 sample, NULL, NULL,
422 scripting_max_stack) != 0) {
423 pr_err("Failed to resolve callchain. Skipping\n");
424 goto exit;
425 }
426 callchain_cursor_commit(&callchain_cursor);
427
428
429 while (1) {
430 PyObject *pyelem;
431 struct callchain_cursor_node *node;
432 node = callchain_cursor_current(&callchain_cursor);
433 if (!node)
434 break;
435
436 pyelem = PyDict_New();
437 if (!pyelem)
438 Py_FatalError("couldn't create Python dictionary");
439
440
441 pydict_set_item_string_decref(pyelem, "ip",
442 PyLong_FromUnsignedLongLong(node->ip));
443
444 if (node->ms.sym) {
445 PyObject *pysym = PyDict_New();
446 if (!pysym)
447 Py_FatalError("couldn't create Python dictionary");
448 pydict_set_item_string_decref(pysym, "start",
449 PyLong_FromUnsignedLongLong(node->ms.sym->start));
450 pydict_set_item_string_decref(pysym, "end",
451 PyLong_FromUnsignedLongLong(node->ms.sym->end));
452 pydict_set_item_string_decref(pysym, "binding",
453 _PyLong_FromLong(node->ms.sym->binding));
454 pydict_set_item_string_decref(pysym, "name",
455 _PyUnicode_FromStringAndSize(node->ms.sym->name,
456 node->ms.sym->namelen));
457 pydict_set_item_string_decref(pyelem, "sym", pysym);
458
459 if (node->ms.map) {
460 struct map *map = node->ms.map;
461 struct addr_location node_al;
462 unsigned long offset;
463
464 node_al.addr = map->map_ip(map, node->ip);
465 node_al.map = map;
466 offset = get_offset(node->ms.sym, &node_al);
467
468 pydict_set_item_string_decref(
469 pyelem, "sym_off",
470 PyLong_FromUnsignedLongLong(offset));
471 }
472 if (node->srcline && strcmp(":0", node->srcline)) {
473 pydict_set_item_string_decref(
474 pyelem, "sym_srcline",
475 _PyUnicode_FromString(node->srcline));
476 }
477 }
478
479 if (node->ms.map) {
480 const char *dsoname = get_dsoname(node->ms.map);
481
482 pydict_set_item_string_decref(pyelem, "dso",
483 _PyUnicode_FromString(dsoname));
484 }
485
486 callchain_cursor_advance(&callchain_cursor);
487 PyList_Append(pylist, pyelem);
488 Py_DECREF(pyelem);
489 }
490
491 exit:
492 return pylist;
493 }
494
python_process_brstack(struct perf_sample * sample,struct thread * thread)495 static PyObject *python_process_brstack(struct perf_sample *sample,
496 struct thread *thread)
497 {
498 struct branch_stack *br = sample->branch_stack;
499 struct branch_entry *entries = perf_sample__branch_entries(sample);
500 PyObject *pylist;
501 u64 i;
502
503 pylist = PyList_New(0);
504 if (!pylist)
505 Py_FatalError("couldn't create Python list");
506
507 if (!(br && br->nr))
508 goto exit;
509
510 for (i = 0; i < br->nr; i++) {
511 PyObject *pyelem;
512 struct addr_location al;
513 const char *dsoname;
514
515 pyelem = PyDict_New();
516 if (!pyelem)
517 Py_FatalError("couldn't create Python dictionary");
518
519 pydict_set_item_string_decref(pyelem, "from",
520 PyLong_FromUnsignedLongLong(entries[i].from));
521 pydict_set_item_string_decref(pyelem, "to",
522 PyLong_FromUnsignedLongLong(entries[i].to));
523 pydict_set_item_string_decref(pyelem, "mispred",
524 PyBool_FromLong(entries[i].flags.mispred));
525 pydict_set_item_string_decref(pyelem, "predicted",
526 PyBool_FromLong(entries[i].flags.predicted));
527 pydict_set_item_string_decref(pyelem, "in_tx",
528 PyBool_FromLong(entries[i].flags.in_tx));
529 pydict_set_item_string_decref(pyelem, "abort",
530 PyBool_FromLong(entries[i].flags.abort));
531 pydict_set_item_string_decref(pyelem, "cycles",
532 PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
533
534 thread__find_map_fb(thread, sample->cpumode,
535 entries[i].from, &al);
536 dsoname = get_dsoname(al.map);
537 pydict_set_item_string_decref(pyelem, "from_dsoname",
538 _PyUnicode_FromString(dsoname));
539
540 thread__find_map_fb(thread, sample->cpumode,
541 entries[i].to, &al);
542 dsoname = get_dsoname(al.map);
543 pydict_set_item_string_decref(pyelem, "to_dsoname",
544 _PyUnicode_FromString(dsoname));
545
546 PyList_Append(pylist, pyelem);
547 Py_DECREF(pyelem);
548 }
549
550 exit:
551 return pylist;
552 }
553
get_symoff(struct symbol * sym,struct addr_location * al,bool print_off,char * bf,int size)554 static int get_symoff(struct symbol *sym, struct addr_location *al,
555 bool print_off, char *bf, int size)
556 {
557 unsigned long offset;
558
559 if (!sym || !sym->name[0])
560 return scnprintf(bf, size, "%s", "[unknown]");
561
562 if (!print_off)
563 return scnprintf(bf, size, "%s", sym->name);
564
565 offset = get_offset(sym, al);
566
567 return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
568 }
569
get_br_mspred(struct branch_flags * flags,char * bf,int size)570 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
571 {
572 if (!flags->mispred && !flags->predicted)
573 return scnprintf(bf, size, "%s", "-");
574
575 if (flags->mispred)
576 return scnprintf(bf, size, "%s", "M");
577
578 return scnprintf(bf, size, "%s", "P");
579 }
580
python_process_brstacksym(struct perf_sample * sample,struct thread * thread)581 static PyObject *python_process_brstacksym(struct perf_sample *sample,
582 struct thread *thread)
583 {
584 struct branch_stack *br = sample->branch_stack;
585 struct branch_entry *entries = perf_sample__branch_entries(sample);
586 PyObject *pylist;
587 u64 i;
588 char bf[512];
589 struct addr_location al;
590
591 pylist = PyList_New(0);
592 if (!pylist)
593 Py_FatalError("couldn't create Python list");
594
595 if (!(br && br->nr))
596 goto exit;
597
598 for (i = 0; i < br->nr; i++) {
599 PyObject *pyelem;
600
601 pyelem = PyDict_New();
602 if (!pyelem)
603 Py_FatalError("couldn't create Python dictionary");
604
605 thread__find_symbol_fb(thread, sample->cpumode,
606 entries[i].from, &al);
607 get_symoff(al.sym, &al, true, bf, sizeof(bf));
608 pydict_set_item_string_decref(pyelem, "from",
609 _PyUnicode_FromString(bf));
610
611 thread__find_symbol_fb(thread, sample->cpumode,
612 entries[i].to, &al);
613 get_symoff(al.sym, &al, true, bf, sizeof(bf));
614 pydict_set_item_string_decref(pyelem, "to",
615 _PyUnicode_FromString(bf));
616
617 get_br_mspred(&entries[i].flags, bf, sizeof(bf));
618 pydict_set_item_string_decref(pyelem, "pred",
619 _PyUnicode_FromString(bf));
620
621 if (entries[i].flags.in_tx) {
622 pydict_set_item_string_decref(pyelem, "in_tx",
623 _PyUnicode_FromString("X"));
624 } else {
625 pydict_set_item_string_decref(pyelem, "in_tx",
626 _PyUnicode_FromString("-"));
627 }
628
629 if (entries[i].flags.abort) {
630 pydict_set_item_string_decref(pyelem, "abort",
631 _PyUnicode_FromString("A"));
632 } else {
633 pydict_set_item_string_decref(pyelem, "abort",
634 _PyUnicode_FromString("-"));
635 }
636
637 PyList_Append(pylist, pyelem);
638 Py_DECREF(pyelem);
639 }
640
641 exit:
642 return pylist;
643 }
644
get_sample_value_as_tuple(struct sample_read_value * value,u64 read_format)645 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
646 u64 read_format)
647 {
648 PyObject *t;
649
650 t = PyTuple_New(3);
651 if (!t)
652 Py_FatalError("couldn't create Python tuple");
653 PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
654 PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
655 if (read_format & PERF_FORMAT_LOST)
656 PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
657
658 return t;
659 }
660
set_sample_read_in_dict(PyObject * dict_sample,struct perf_sample * sample,struct evsel * evsel)661 static void set_sample_read_in_dict(PyObject *dict_sample,
662 struct perf_sample *sample,
663 struct evsel *evsel)
664 {
665 u64 read_format = evsel->core.attr.read_format;
666 PyObject *values;
667 unsigned int i;
668
669 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
670 pydict_set_item_string_decref(dict_sample, "time_enabled",
671 PyLong_FromUnsignedLongLong(sample->read.time_enabled));
672 }
673
674 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
675 pydict_set_item_string_decref(dict_sample, "time_running",
676 PyLong_FromUnsignedLongLong(sample->read.time_running));
677 }
678
679 if (read_format & PERF_FORMAT_GROUP)
680 values = PyList_New(sample->read.group.nr);
681 else
682 values = PyList_New(1);
683
684 if (!values)
685 Py_FatalError("couldn't create Python list");
686
687 if (read_format & PERF_FORMAT_GROUP) {
688 struct sample_read_value *v = sample->read.group.values;
689
690 i = 0;
691 sample_read_group__for_each(v, sample->read.group.nr, read_format) {
692 PyObject *t = get_sample_value_as_tuple(v, read_format);
693 PyList_SET_ITEM(values, i, t);
694 i++;
695 }
696 } else {
697 PyObject *t = get_sample_value_as_tuple(&sample->read.one,
698 read_format);
699 PyList_SET_ITEM(values, 0, t);
700 }
701 pydict_set_item_string_decref(dict_sample, "values", values);
702 }
703
set_sample_datasrc_in_dict(PyObject * dict,struct perf_sample * sample)704 static void set_sample_datasrc_in_dict(PyObject *dict,
705 struct perf_sample *sample)
706 {
707 struct mem_info mi = { .data_src.val = sample->data_src };
708 char decode[100];
709
710 pydict_set_item_string_decref(dict, "datasrc",
711 PyLong_FromUnsignedLongLong(sample->data_src));
712
713 perf_script__meminfo_scnprintf(decode, 100, &mi);
714
715 pydict_set_item_string_decref(dict, "datasrc_decode",
716 _PyUnicode_FromString(decode));
717 }
718
regs_map(struct regs_dump * regs,uint64_t mask,const char * arch,char * bf,int size)719 static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
720 {
721 unsigned int i = 0, r;
722 int printed = 0;
723
724 bf[0] = 0;
725
726 if (!regs || !regs->regs)
727 return;
728
729 for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
730 u64 val = regs->regs[i++];
731
732 printed += scnprintf(bf + printed, size - printed,
733 "%5s:0x%" PRIx64 " ",
734 perf_reg_name(r, arch), val);
735 }
736 }
737
set_regs_in_dict(PyObject * dict,struct perf_sample * sample,struct evsel * evsel)738 static void set_regs_in_dict(PyObject *dict,
739 struct perf_sample *sample,
740 struct evsel *evsel)
741 {
742 struct perf_event_attr *attr = &evsel->core.attr;
743 const char *arch = perf_env__arch(evsel__env(evsel));
744
745 /*
746 * Here value 28 is a constant size which can be used to print
747 * one register value and its corresponds to:
748 * 16 chars is to specify 64 bit register in hexadecimal.
749 * 2 chars is for appending "0x" to the hexadecimal value and
750 * 10 chars is for register name.
751 */
752 int size = __sw_hweight64(attr->sample_regs_intr) * 28;
753 char bf[size];
754
755 regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, sizeof(bf));
756
757 pydict_set_item_string_decref(dict, "iregs",
758 _PyUnicode_FromString(bf));
759
760 regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, sizeof(bf));
761
762 pydict_set_item_string_decref(dict, "uregs",
763 _PyUnicode_FromString(bf));
764 }
765
set_sym_in_dict(PyObject * dict,struct addr_location * al,const char * dso_field,const char * dso_bid_field,const char * dso_map_start,const char * dso_map_end,const char * sym_field,const char * symoff_field)766 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
767 const char *dso_field, const char *dso_bid_field,
768 const char *dso_map_start, const char *dso_map_end,
769 const char *sym_field, const char *symoff_field)
770 {
771 char sbuild_id[SBUILD_ID_SIZE];
772
773 if (al->map) {
774 pydict_set_item_string_decref(dict, dso_field,
775 _PyUnicode_FromString(al->map->dso->name));
776 build_id__sprintf(&al->map->dso->bid, sbuild_id);
777 pydict_set_item_string_decref(dict, dso_bid_field,
778 _PyUnicode_FromString(sbuild_id));
779 pydict_set_item_string_decref(dict, dso_map_start,
780 PyLong_FromUnsignedLong(al->map->start));
781 pydict_set_item_string_decref(dict, dso_map_end,
782 PyLong_FromUnsignedLong(al->map->end));
783 }
784 if (al->sym) {
785 pydict_set_item_string_decref(dict, sym_field,
786 _PyUnicode_FromString(al->sym->name));
787 pydict_set_item_string_decref(dict, symoff_field,
788 PyLong_FromUnsignedLong(get_offset(al->sym, al)));
789 }
790 }
791
set_sample_flags(PyObject * dict,u32 flags)792 static void set_sample_flags(PyObject *dict, u32 flags)
793 {
794 const char *ch = PERF_IP_FLAG_CHARS;
795 char *p, str[33];
796
797 for (p = str; *ch; ch++, flags >>= 1) {
798 if (flags & 1)
799 *p++ = *ch;
800 }
801 *p = 0;
802 pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
803 }
804
python_process_sample_flags(struct perf_sample * sample,PyObject * dict_sample)805 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
806 {
807 char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
808
809 set_sample_flags(dict_sample, sample->flags);
810 perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
811 pydict_set_item_string_decref(dict_sample, "flags_disp",
812 _PyUnicode_FromString(flags_disp));
813 }
814
get_perf_sample_dict(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al,PyObject * callchain)815 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
816 struct evsel *evsel,
817 struct addr_location *al,
818 struct addr_location *addr_al,
819 PyObject *callchain)
820 {
821 PyObject *dict, *dict_sample, *brstack, *brstacksym;
822
823 dict = PyDict_New();
824 if (!dict)
825 Py_FatalError("couldn't create Python dictionary");
826
827 dict_sample = PyDict_New();
828 if (!dict_sample)
829 Py_FatalError("couldn't create Python dictionary");
830
831 pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
832 pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
833
834 pydict_set_item_string_decref(dict_sample, "pid",
835 _PyLong_FromLong(sample->pid));
836 pydict_set_item_string_decref(dict_sample, "tid",
837 _PyLong_FromLong(sample->tid));
838 pydict_set_item_string_decref(dict_sample, "cpu",
839 _PyLong_FromLong(sample->cpu));
840 pydict_set_item_string_decref(dict_sample, "ip",
841 PyLong_FromUnsignedLongLong(sample->ip));
842 pydict_set_item_string_decref(dict_sample, "time",
843 PyLong_FromUnsignedLongLong(sample->time));
844 pydict_set_item_string_decref(dict_sample, "period",
845 PyLong_FromUnsignedLongLong(sample->period));
846 pydict_set_item_string_decref(dict_sample, "phys_addr",
847 PyLong_FromUnsignedLongLong(sample->phys_addr));
848 pydict_set_item_string_decref(dict_sample, "addr",
849 PyLong_FromUnsignedLongLong(sample->addr));
850 set_sample_read_in_dict(dict_sample, sample, evsel);
851 pydict_set_item_string_decref(dict_sample, "weight",
852 PyLong_FromUnsignedLongLong(sample->weight));
853 pydict_set_item_string_decref(dict_sample, "transaction",
854 PyLong_FromUnsignedLongLong(sample->transaction));
855 set_sample_datasrc_in_dict(dict_sample, sample);
856 pydict_set_item_string_decref(dict, "sample", dict_sample);
857
858 pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
859 (const char *)sample->raw_data, sample->raw_size));
860 pydict_set_item_string_decref(dict, "comm",
861 _PyUnicode_FromString(thread__comm_str(al->thread)));
862 set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
863 "symbol", "symoff");
864
865 pydict_set_item_string_decref(dict, "callchain", callchain);
866
867 brstack = python_process_brstack(sample, al->thread);
868 pydict_set_item_string_decref(dict, "brstack", brstack);
869
870 brstacksym = python_process_brstacksym(sample, al->thread);
871 pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
872
873 if (sample->machine_pid) {
874 pydict_set_item_string_decref(dict_sample, "machine_pid",
875 _PyLong_FromLong(sample->machine_pid));
876 pydict_set_item_string_decref(dict_sample, "vcpu",
877 _PyLong_FromLong(sample->vcpu));
878 }
879
880 pydict_set_item_string_decref(dict_sample, "cpumode",
881 _PyLong_FromLong((unsigned long)sample->cpumode));
882
883 if (addr_al) {
884 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
885 PyBool_FromLong(1));
886 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
887 "addr_dso_map_start", "addr_dso_map_end",
888 "addr_symbol", "addr_symoff");
889 }
890
891 if (sample->flags)
892 python_process_sample_flags(sample, dict_sample);
893
894 /* Instructions per cycle (IPC) */
895 if (sample->insn_cnt && sample->cyc_cnt) {
896 pydict_set_item_string_decref(dict_sample, "insn_cnt",
897 PyLong_FromUnsignedLongLong(sample->insn_cnt));
898 pydict_set_item_string_decref(dict_sample, "cyc_cnt",
899 PyLong_FromUnsignedLongLong(sample->cyc_cnt));
900 }
901
902 set_regs_in_dict(dict, sample, evsel);
903
904 return dict;
905 }
906
python_process_tracepoint(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)907 static void python_process_tracepoint(struct perf_sample *sample,
908 struct evsel *evsel,
909 struct addr_location *al,
910 struct addr_location *addr_al)
911 {
912 struct tep_event *event = evsel->tp_format;
913 PyObject *handler, *context, *t, *obj = NULL, *callchain;
914 PyObject *dict = NULL, *all_entries_dict = NULL;
915 static char handler_name[256];
916 struct tep_format_field *field;
917 unsigned long s, ns;
918 unsigned n = 0;
919 int pid;
920 int cpu = sample->cpu;
921 void *data = sample->raw_data;
922 unsigned long long nsecs = sample->time;
923 const char *comm = thread__comm_str(al->thread);
924 const char *default_handler_name = "trace_unhandled";
925
926 if (!event) {
927 snprintf(handler_name, sizeof(handler_name),
928 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
929 Py_FatalError(handler_name);
930 }
931
932 pid = raw_field_value(event, "common_pid", data);
933
934 sprintf(handler_name, "%s__%s", event->system, event->name);
935
936 if (!test_and_set_bit(event->id, events_defined))
937 define_event_symbols(event, handler_name, event->print_fmt.args);
938
939 handler = get_handler(handler_name);
940 if (!handler) {
941 handler = get_handler(default_handler_name);
942 if (!handler)
943 return;
944 dict = PyDict_New();
945 if (!dict)
946 Py_FatalError("couldn't create Python dict");
947 }
948
949 t = PyTuple_New(MAX_FIELDS);
950 if (!t)
951 Py_FatalError("couldn't create Python tuple");
952
953
954 s = nsecs / NSEC_PER_SEC;
955 ns = nsecs - s * NSEC_PER_SEC;
956
957 context = _PyCapsule_New(scripting_context, NULL, NULL);
958
959 PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
960 PyTuple_SetItem(t, n++, context);
961
962 /* ip unwinding */
963 callchain = python_process_callchain(sample, evsel, al);
964 /* Need an additional reference for the perf_sample dict */
965 Py_INCREF(callchain);
966
967 if (!dict) {
968 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
969 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
970 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
971 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
972 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
973 PyTuple_SetItem(t, n++, callchain);
974 } else {
975 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
976 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
977 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
978 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
979 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
980 pydict_set_item_string_decref(dict, "common_callchain", callchain);
981 }
982 for (field = event->format.fields; field; field = field->next) {
983 unsigned int offset, len;
984 unsigned long long val;
985
986 if (field->flags & TEP_FIELD_IS_ARRAY) {
987 offset = field->offset;
988 len = field->size;
989 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
990 val = tep_read_number(scripting_context->pevent,
991 data + offset, len);
992 offset = val;
993 len = offset >> 16;
994 offset &= 0xffff;
995 if (field->flags & TEP_FIELD_IS_RELATIVE)
996 offset += field->offset + field->size;
997 }
998 if (field->flags & TEP_FIELD_IS_STRING &&
999 is_printable_array(data + offset, len)) {
1000 obj = _PyUnicode_FromString((char *) data + offset);
1001 } else {
1002 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1003 field->flags &= ~TEP_FIELD_IS_STRING;
1004 }
1005 } else { /* FIELD_IS_NUMERIC */
1006 obj = get_field_numeric_entry(event, field, data);
1007 }
1008 if (!dict)
1009 PyTuple_SetItem(t, n++, obj);
1010 else
1011 pydict_set_item_string_decref(dict, field->name, obj);
1012
1013 }
1014
1015 if (dict)
1016 PyTuple_SetItem(t, n++, dict);
1017
1018 if (get_argument_count(handler) == (int) n + 1) {
1019 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1020 callchain);
1021 PyTuple_SetItem(t, n++, all_entries_dict);
1022 } else {
1023 Py_DECREF(callchain);
1024 }
1025
1026 if (_PyTuple_Resize(&t, n) == -1)
1027 Py_FatalError("error resizing Python tuple");
1028
1029 if (!dict)
1030 call_object(handler, t, handler_name);
1031 else
1032 call_object(handler, t, default_handler_name);
1033
1034 Py_DECREF(t);
1035 }
1036
tuple_new(unsigned int sz)1037 static PyObject *tuple_new(unsigned int sz)
1038 {
1039 PyObject *t;
1040
1041 t = PyTuple_New(sz);
1042 if (!t)
1043 Py_FatalError("couldn't create Python tuple");
1044 return t;
1045 }
1046
tuple_set_s64(PyObject * t,unsigned int pos,s64 val)1047 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1048 {
1049 #if BITS_PER_LONG == 64
1050 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1051 #endif
1052 #if BITS_PER_LONG == 32
1053 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1054 #endif
1055 }
1056
1057 /*
1058 * Databases support only signed 64-bit numbers, so even though we are
1059 * exporting a u64, it must be as s64.
1060 */
1061 #define tuple_set_d64 tuple_set_s64
1062
tuple_set_u64(PyObject * t,unsigned int pos,u64 val)1063 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1064 {
1065 #if BITS_PER_LONG == 64
1066 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1067 #endif
1068 #if BITS_PER_LONG == 32
1069 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1070 #endif
1071 }
1072
tuple_set_u32(PyObject * t,unsigned int pos,u32 val)1073 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1074 {
1075 return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1076 }
1077
tuple_set_s32(PyObject * t,unsigned int pos,s32 val)1078 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1079 {
1080 return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1081 }
1082
tuple_set_bool(PyObject * t,unsigned int pos,bool val)1083 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1084 {
1085 return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1086 }
1087
tuple_set_string(PyObject * t,unsigned int pos,const char * s)1088 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1089 {
1090 return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1091 }
1092
tuple_set_bytes(PyObject * t,unsigned int pos,void * bytes,unsigned int sz)1093 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1094 unsigned int sz)
1095 {
1096 return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1097 }
1098
python_export_evsel(struct db_export * dbe,struct evsel * evsel)1099 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1100 {
1101 struct tables *tables = container_of(dbe, struct tables, dbe);
1102 PyObject *t;
1103
1104 t = tuple_new(2);
1105
1106 tuple_set_d64(t, 0, evsel->db_id);
1107 tuple_set_string(t, 1, evsel__name(evsel));
1108
1109 call_object(tables->evsel_handler, t, "evsel_table");
1110
1111 Py_DECREF(t);
1112
1113 return 0;
1114 }
1115
python_export_machine(struct db_export * dbe,struct machine * machine)1116 static int python_export_machine(struct db_export *dbe,
1117 struct machine *machine)
1118 {
1119 struct tables *tables = container_of(dbe, struct tables, dbe);
1120 PyObject *t;
1121
1122 t = tuple_new(3);
1123
1124 tuple_set_d64(t, 0, machine->db_id);
1125 tuple_set_s32(t, 1, machine->pid);
1126 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1127
1128 call_object(tables->machine_handler, t, "machine_table");
1129
1130 Py_DECREF(t);
1131
1132 return 0;
1133 }
1134
python_export_thread(struct db_export * dbe,struct thread * thread,u64 main_thread_db_id,struct machine * machine)1135 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1136 u64 main_thread_db_id, struct machine *machine)
1137 {
1138 struct tables *tables = container_of(dbe, struct tables, dbe);
1139 PyObject *t;
1140
1141 t = tuple_new(5);
1142
1143 tuple_set_d64(t, 0, thread->db_id);
1144 tuple_set_d64(t, 1, machine->db_id);
1145 tuple_set_d64(t, 2, main_thread_db_id);
1146 tuple_set_s32(t, 3, thread->pid_);
1147 tuple_set_s32(t, 4, thread->tid);
1148
1149 call_object(tables->thread_handler, t, "thread_table");
1150
1151 Py_DECREF(t);
1152
1153 return 0;
1154 }
1155
python_export_comm(struct db_export * dbe,struct comm * comm,struct thread * thread)1156 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1157 struct thread *thread)
1158 {
1159 struct tables *tables = container_of(dbe, struct tables, dbe);
1160 PyObject *t;
1161
1162 t = tuple_new(5);
1163
1164 tuple_set_d64(t, 0, comm->db_id);
1165 tuple_set_string(t, 1, comm__str(comm));
1166 tuple_set_d64(t, 2, thread->db_id);
1167 tuple_set_d64(t, 3, comm->start);
1168 tuple_set_s32(t, 4, comm->exec);
1169
1170 call_object(tables->comm_handler, t, "comm_table");
1171
1172 Py_DECREF(t);
1173
1174 return 0;
1175 }
1176
python_export_comm_thread(struct db_export * dbe,u64 db_id,struct comm * comm,struct thread * thread)1177 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1178 struct comm *comm, struct thread *thread)
1179 {
1180 struct tables *tables = container_of(dbe, struct tables, dbe);
1181 PyObject *t;
1182
1183 t = tuple_new(3);
1184
1185 tuple_set_d64(t, 0, db_id);
1186 tuple_set_d64(t, 1, comm->db_id);
1187 tuple_set_d64(t, 2, thread->db_id);
1188
1189 call_object(tables->comm_thread_handler, t, "comm_thread_table");
1190
1191 Py_DECREF(t);
1192
1193 return 0;
1194 }
1195
python_export_dso(struct db_export * dbe,struct dso * dso,struct machine * machine)1196 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1197 struct machine *machine)
1198 {
1199 struct tables *tables = container_of(dbe, struct tables, dbe);
1200 char sbuild_id[SBUILD_ID_SIZE];
1201 PyObject *t;
1202
1203 build_id__sprintf(&dso->bid, sbuild_id);
1204
1205 t = tuple_new(5);
1206
1207 tuple_set_d64(t, 0, dso->db_id);
1208 tuple_set_d64(t, 1, machine->db_id);
1209 tuple_set_string(t, 2, dso->short_name);
1210 tuple_set_string(t, 3, dso->long_name);
1211 tuple_set_string(t, 4, sbuild_id);
1212
1213 call_object(tables->dso_handler, t, "dso_table");
1214
1215 Py_DECREF(t);
1216
1217 return 0;
1218 }
1219
python_export_symbol(struct db_export * dbe,struct symbol * sym,struct dso * dso)1220 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1221 struct dso *dso)
1222 {
1223 struct tables *tables = container_of(dbe, struct tables, dbe);
1224 u64 *sym_db_id = symbol__priv(sym);
1225 PyObject *t;
1226
1227 t = tuple_new(6);
1228
1229 tuple_set_d64(t, 0, *sym_db_id);
1230 tuple_set_d64(t, 1, dso->db_id);
1231 tuple_set_d64(t, 2, sym->start);
1232 tuple_set_d64(t, 3, sym->end);
1233 tuple_set_s32(t, 4, sym->binding);
1234 tuple_set_string(t, 5, sym->name);
1235
1236 call_object(tables->symbol_handler, t, "symbol_table");
1237
1238 Py_DECREF(t);
1239
1240 return 0;
1241 }
1242
python_export_branch_type(struct db_export * dbe,u32 branch_type,const char * name)1243 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1244 const char *name)
1245 {
1246 struct tables *tables = container_of(dbe, struct tables, dbe);
1247 PyObject *t;
1248
1249 t = tuple_new(2);
1250
1251 tuple_set_s32(t, 0, branch_type);
1252 tuple_set_string(t, 1, name);
1253
1254 call_object(tables->branch_type_handler, t, "branch_type_table");
1255
1256 Py_DECREF(t);
1257
1258 return 0;
1259 }
1260
python_export_sample_table(struct db_export * dbe,struct export_sample * es)1261 static void python_export_sample_table(struct db_export *dbe,
1262 struct export_sample *es)
1263 {
1264 struct tables *tables = container_of(dbe, struct tables, dbe);
1265 PyObject *t;
1266
1267 t = tuple_new(25);
1268
1269 tuple_set_d64(t, 0, es->db_id);
1270 tuple_set_d64(t, 1, es->evsel->db_id);
1271 tuple_set_d64(t, 2, es->al->maps->machine->db_id);
1272 tuple_set_d64(t, 3, es->al->thread->db_id);
1273 tuple_set_d64(t, 4, es->comm_db_id);
1274 tuple_set_d64(t, 5, es->dso_db_id);
1275 tuple_set_d64(t, 6, es->sym_db_id);
1276 tuple_set_d64(t, 7, es->offset);
1277 tuple_set_d64(t, 8, es->sample->ip);
1278 tuple_set_d64(t, 9, es->sample->time);
1279 tuple_set_s32(t, 10, es->sample->cpu);
1280 tuple_set_d64(t, 11, es->addr_dso_db_id);
1281 tuple_set_d64(t, 12, es->addr_sym_db_id);
1282 tuple_set_d64(t, 13, es->addr_offset);
1283 tuple_set_d64(t, 14, es->sample->addr);
1284 tuple_set_d64(t, 15, es->sample->period);
1285 tuple_set_d64(t, 16, es->sample->weight);
1286 tuple_set_d64(t, 17, es->sample->transaction);
1287 tuple_set_d64(t, 18, es->sample->data_src);
1288 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1289 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1290 tuple_set_d64(t, 21, es->call_path_id);
1291 tuple_set_d64(t, 22, es->sample->insn_cnt);
1292 tuple_set_d64(t, 23, es->sample->cyc_cnt);
1293 tuple_set_s32(t, 24, es->sample->flags);
1294
1295 call_object(tables->sample_handler, t, "sample_table");
1296
1297 Py_DECREF(t);
1298 }
1299
python_export_synth(struct db_export * dbe,struct export_sample * es)1300 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1301 {
1302 struct tables *tables = container_of(dbe, struct tables, dbe);
1303 PyObject *t;
1304
1305 t = tuple_new(3);
1306
1307 tuple_set_d64(t, 0, es->db_id);
1308 tuple_set_d64(t, 1, es->evsel->core.attr.config);
1309 tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1310
1311 call_object(tables->synth_handler, t, "synth_data");
1312
1313 Py_DECREF(t);
1314 }
1315
python_export_sample(struct db_export * dbe,struct export_sample * es)1316 static int python_export_sample(struct db_export *dbe,
1317 struct export_sample *es)
1318 {
1319 struct tables *tables = container_of(dbe, struct tables, dbe);
1320
1321 python_export_sample_table(dbe, es);
1322
1323 if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1324 python_export_synth(dbe, es);
1325
1326 return 0;
1327 }
1328
python_export_call_path(struct db_export * dbe,struct call_path * cp)1329 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1330 {
1331 struct tables *tables = container_of(dbe, struct tables, dbe);
1332 PyObject *t;
1333 u64 parent_db_id, sym_db_id;
1334
1335 parent_db_id = cp->parent ? cp->parent->db_id : 0;
1336 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1337
1338 t = tuple_new(4);
1339
1340 tuple_set_d64(t, 0, cp->db_id);
1341 tuple_set_d64(t, 1, parent_db_id);
1342 tuple_set_d64(t, 2, sym_db_id);
1343 tuple_set_d64(t, 3, cp->ip);
1344
1345 call_object(tables->call_path_handler, t, "call_path_table");
1346
1347 Py_DECREF(t);
1348
1349 return 0;
1350 }
1351
python_export_call_return(struct db_export * dbe,struct call_return * cr)1352 static int python_export_call_return(struct db_export *dbe,
1353 struct call_return *cr)
1354 {
1355 struct tables *tables = container_of(dbe, struct tables, dbe);
1356 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1357 PyObject *t;
1358
1359 t = tuple_new(14);
1360
1361 tuple_set_d64(t, 0, cr->db_id);
1362 tuple_set_d64(t, 1, cr->thread->db_id);
1363 tuple_set_d64(t, 2, comm_db_id);
1364 tuple_set_d64(t, 3, cr->cp->db_id);
1365 tuple_set_d64(t, 4, cr->call_time);
1366 tuple_set_d64(t, 5, cr->return_time);
1367 tuple_set_d64(t, 6, cr->branch_count);
1368 tuple_set_d64(t, 7, cr->call_ref);
1369 tuple_set_d64(t, 8, cr->return_ref);
1370 tuple_set_d64(t, 9, cr->cp->parent->db_id);
1371 tuple_set_s32(t, 10, cr->flags);
1372 tuple_set_d64(t, 11, cr->parent_db_id);
1373 tuple_set_d64(t, 12, cr->insn_count);
1374 tuple_set_d64(t, 13, cr->cyc_count);
1375
1376 call_object(tables->call_return_handler, t, "call_return_table");
1377
1378 Py_DECREF(t);
1379
1380 return 0;
1381 }
1382
python_export_context_switch(struct db_export * dbe,u64 db_id,struct machine * machine,struct perf_sample * sample,u64 th_out_id,u64 comm_out_id,u64 th_in_id,u64 comm_in_id,int flags)1383 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1384 struct machine *machine,
1385 struct perf_sample *sample,
1386 u64 th_out_id, u64 comm_out_id,
1387 u64 th_in_id, u64 comm_in_id, int flags)
1388 {
1389 struct tables *tables = container_of(dbe, struct tables, dbe);
1390 PyObject *t;
1391
1392 t = tuple_new(9);
1393
1394 tuple_set_d64(t, 0, db_id);
1395 tuple_set_d64(t, 1, machine->db_id);
1396 tuple_set_d64(t, 2, sample->time);
1397 tuple_set_s32(t, 3, sample->cpu);
1398 tuple_set_d64(t, 4, th_out_id);
1399 tuple_set_d64(t, 5, comm_out_id);
1400 tuple_set_d64(t, 6, th_in_id);
1401 tuple_set_d64(t, 7, comm_in_id);
1402 tuple_set_s32(t, 8, flags);
1403
1404 call_object(tables->context_switch_handler, t, "context_switch");
1405
1406 Py_DECREF(t);
1407
1408 return 0;
1409 }
1410
python_process_call_return(struct call_return * cr,u64 * parent_db_id,void * data)1411 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1412 void *data)
1413 {
1414 struct db_export *dbe = data;
1415
1416 return db_export__call_return(dbe, cr, parent_db_id);
1417 }
1418
python_process_general_event(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)1419 static void python_process_general_event(struct perf_sample *sample,
1420 struct evsel *evsel,
1421 struct addr_location *al,
1422 struct addr_location *addr_al)
1423 {
1424 PyObject *handler, *t, *dict, *callchain;
1425 static char handler_name[64];
1426 unsigned n = 0;
1427
1428 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1429
1430 handler = get_handler(handler_name);
1431 if (!handler)
1432 return;
1433
1434 /*
1435 * Use the MAX_FIELDS to make the function expandable, though
1436 * currently there is only one item for the tuple.
1437 */
1438 t = PyTuple_New(MAX_FIELDS);
1439 if (!t)
1440 Py_FatalError("couldn't create Python tuple");
1441
1442 /* ip unwinding */
1443 callchain = python_process_callchain(sample, evsel, al);
1444 dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1445
1446 PyTuple_SetItem(t, n++, dict);
1447 if (_PyTuple_Resize(&t, n) == -1)
1448 Py_FatalError("error resizing Python tuple");
1449
1450 call_object(handler, t, handler_name);
1451
1452 Py_DECREF(t);
1453 }
1454
python_process_event(union perf_event * event,struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)1455 static void python_process_event(union perf_event *event,
1456 struct perf_sample *sample,
1457 struct evsel *evsel,
1458 struct addr_location *al,
1459 struct addr_location *addr_al)
1460 {
1461 struct tables *tables = &tables_global;
1462
1463 scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1464
1465 switch (evsel->core.attr.type) {
1466 case PERF_TYPE_TRACEPOINT:
1467 python_process_tracepoint(sample, evsel, al, addr_al);
1468 break;
1469 /* Reserve for future process_hw/sw/raw APIs */
1470 default:
1471 if (tables->db_export_mode)
1472 db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1473 else
1474 python_process_general_event(sample, evsel, al, addr_al);
1475 }
1476 }
1477
python_process_throttle(union perf_event * event,struct perf_sample * sample,struct machine * machine)1478 static void python_process_throttle(union perf_event *event,
1479 struct perf_sample *sample,
1480 struct machine *machine)
1481 {
1482 const char *handler_name;
1483 PyObject *handler, *t;
1484
1485 if (event->header.type == PERF_RECORD_THROTTLE)
1486 handler_name = "throttle";
1487 else
1488 handler_name = "unthrottle";
1489 handler = get_handler(handler_name);
1490 if (!handler)
1491 return;
1492
1493 t = tuple_new(6);
1494 if (!t)
1495 return;
1496
1497 tuple_set_u64(t, 0, event->throttle.time);
1498 tuple_set_u64(t, 1, event->throttle.id);
1499 tuple_set_u64(t, 2, event->throttle.stream_id);
1500 tuple_set_s32(t, 3, sample->cpu);
1501 tuple_set_s32(t, 4, sample->pid);
1502 tuple_set_s32(t, 5, sample->tid);
1503
1504 call_object(handler, t, handler_name);
1505
1506 Py_DECREF(t);
1507 }
1508
python_do_process_switch(union perf_event * event,struct perf_sample * sample,struct machine * machine)1509 static void python_do_process_switch(union perf_event *event,
1510 struct perf_sample *sample,
1511 struct machine *machine)
1512 {
1513 const char *handler_name = "context_switch";
1514 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1515 bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1516 pid_t np_pid = -1, np_tid = -1;
1517 PyObject *handler, *t;
1518
1519 handler = get_handler(handler_name);
1520 if (!handler)
1521 return;
1522
1523 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1524 np_pid = event->context_switch.next_prev_pid;
1525 np_tid = event->context_switch.next_prev_tid;
1526 }
1527
1528 t = tuple_new(11);
1529 if (!t)
1530 return;
1531
1532 tuple_set_u64(t, 0, sample->time);
1533 tuple_set_s32(t, 1, sample->cpu);
1534 tuple_set_s32(t, 2, sample->pid);
1535 tuple_set_s32(t, 3, sample->tid);
1536 tuple_set_s32(t, 4, np_pid);
1537 tuple_set_s32(t, 5, np_tid);
1538 tuple_set_s32(t, 6, machine->pid);
1539 tuple_set_bool(t, 7, out);
1540 tuple_set_bool(t, 8, out_preempt);
1541 tuple_set_s32(t, 9, sample->machine_pid);
1542 tuple_set_s32(t, 10, sample->vcpu);
1543
1544 call_object(handler, t, handler_name);
1545
1546 Py_DECREF(t);
1547 }
1548
python_process_switch(union perf_event * event,struct perf_sample * sample,struct machine * machine)1549 static void python_process_switch(union perf_event *event,
1550 struct perf_sample *sample,
1551 struct machine *machine)
1552 {
1553 struct tables *tables = &tables_global;
1554
1555 if (tables->db_export_mode)
1556 db_export__switch(&tables->dbe, event, sample, machine);
1557 else
1558 python_do_process_switch(event, sample, machine);
1559 }
1560
python_process_auxtrace_error(struct perf_session * session __maybe_unused,union perf_event * event)1561 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1562 union perf_event *event)
1563 {
1564 struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1565 u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1566 const char *handler_name = "auxtrace_error";
1567 unsigned long long tm = e->time;
1568 const char *msg = e->msg;
1569 PyObject *handler, *t;
1570
1571 handler = get_handler(handler_name);
1572 if (!handler)
1573 return;
1574
1575 if (!e->fmt) {
1576 tm = 0;
1577 msg = (const char *)&e->time;
1578 }
1579
1580 t = tuple_new(11);
1581
1582 tuple_set_u32(t, 0, e->type);
1583 tuple_set_u32(t, 1, e->code);
1584 tuple_set_s32(t, 2, e->cpu);
1585 tuple_set_s32(t, 3, e->pid);
1586 tuple_set_s32(t, 4, e->tid);
1587 tuple_set_u64(t, 5, e->ip);
1588 tuple_set_u64(t, 6, tm);
1589 tuple_set_string(t, 7, msg);
1590 tuple_set_u32(t, 8, cpumode);
1591 tuple_set_s32(t, 9, e->machine_pid);
1592 tuple_set_s32(t, 10, e->vcpu);
1593
1594 call_object(handler, t, handler_name);
1595
1596 Py_DECREF(t);
1597 }
1598
get_handler_name(char * str,size_t size,struct evsel * evsel)1599 static void get_handler_name(char *str, size_t size,
1600 struct evsel *evsel)
1601 {
1602 char *p = str;
1603
1604 scnprintf(str, size, "stat__%s", evsel__name(evsel));
1605
1606 while ((p = strchr(p, ':'))) {
1607 *p = '_';
1608 p++;
1609 }
1610 }
1611
1612 static void
process_stat(struct evsel * counter,struct perf_cpu cpu,int thread,u64 tstamp,struct perf_counts_values * count)1613 process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1614 struct perf_counts_values *count)
1615 {
1616 PyObject *handler, *t;
1617 static char handler_name[256];
1618 int n = 0;
1619
1620 t = PyTuple_New(MAX_FIELDS);
1621 if (!t)
1622 Py_FatalError("couldn't create Python tuple");
1623
1624 get_handler_name(handler_name, sizeof(handler_name),
1625 counter);
1626
1627 handler = get_handler(handler_name);
1628 if (!handler) {
1629 pr_debug("can't find python handler %s\n", handler_name);
1630 return;
1631 }
1632
1633 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1634 PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1635
1636 tuple_set_u64(t, n++, tstamp);
1637 tuple_set_u64(t, n++, count->val);
1638 tuple_set_u64(t, n++, count->ena);
1639 tuple_set_u64(t, n++, count->run);
1640
1641 if (_PyTuple_Resize(&t, n) == -1)
1642 Py_FatalError("error resizing Python tuple");
1643
1644 call_object(handler, t, handler_name);
1645
1646 Py_DECREF(t);
1647 }
1648
python_process_stat(struct perf_stat_config * config,struct evsel * counter,u64 tstamp)1649 static void python_process_stat(struct perf_stat_config *config,
1650 struct evsel *counter, u64 tstamp)
1651 {
1652 struct perf_thread_map *threads = counter->core.threads;
1653 struct perf_cpu_map *cpus = counter->core.cpus;
1654 int cpu, thread;
1655
1656 if (config->aggr_mode == AGGR_GLOBAL) {
1657 process_stat(counter, (struct perf_cpu){ .cpu = -1 }, -1, tstamp,
1658 &counter->counts->aggr);
1659 return;
1660 }
1661
1662 for (thread = 0; thread < threads->nr; thread++) {
1663 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1664 process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
1665 perf_thread_map__pid(threads, thread), tstamp,
1666 perf_counts(counter->counts, cpu, thread));
1667 }
1668 }
1669 }
1670
python_process_stat_interval(u64 tstamp)1671 static void python_process_stat_interval(u64 tstamp)
1672 {
1673 PyObject *handler, *t;
1674 static const char handler_name[] = "stat__interval";
1675 int n = 0;
1676
1677 t = PyTuple_New(MAX_FIELDS);
1678 if (!t)
1679 Py_FatalError("couldn't create Python tuple");
1680
1681 handler = get_handler(handler_name);
1682 if (!handler) {
1683 pr_debug("can't find python handler %s\n", handler_name);
1684 return;
1685 }
1686
1687 tuple_set_u64(t, n++, tstamp);
1688
1689 if (_PyTuple_Resize(&t, n) == -1)
1690 Py_FatalError("error resizing Python tuple");
1691
1692 call_object(handler, t, handler_name);
1693
1694 Py_DECREF(t);
1695 }
1696
perf_script_context_init(void)1697 static int perf_script_context_init(void)
1698 {
1699 PyObject *perf_script_context;
1700 PyObject *perf_trace_context;
1701 PyObject *dict;
1702 int ret;
1703
1704 perf_trace_context = PyImport_AddModule("perf_trace_context");
1705 if (!perf_trace_context)
1706 return -1;
1707 dict = PyModule_GetDict(perf_trace_context);
1708 if (!dict)
1709 return -1;
1710
1711 perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1712 if (!perf_script_context)
1713 return -1;
1714
1715 ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1716 if (!ret)
1717 ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1718 Py_DECREF(perf_script_context);
1719 return ret;
1720 }
1721
run_start_sub(void)1722 static int run_start_sub(void)
1723 {
1724 main_module = PyImport_AddModule("__main__");
1725 if (main_module == NULL)
1726 return -1;
1727 Py_INCREF(main_module);
1728
1729 main_dict = PyModule_GetDict(main_module);
1730 if (main_dict == NULL)
1731 goto error;
1732 Py_INCREF(main_dict);
1733
1734 if (perf_script_context_init())
1735 goto error;
1736
1737 try_call_object("trace_begin", NULL);
1738
1739 return 0;
1740
1741 error:
1742 Py_XDECREF(main_dict);
1743 Py_XDECREF(main_module);
1744 return -1;
1745 }
1746
1747 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
1748 tables->handler_name = get_handler(#table_name); \
1749 if (tables->handler_name) \
1750 tables->dbe.export_ ## name = python_export_ ## name; \
1751 } while (0)
1752
1753 #define SET_TABLE_HANDLER(name) \
1754 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1755
set_table_handlers(struct tables * tables)1756 static void set_table_handlers(struct tables *tables)
1757 {
1758 const char *perf_db_export_mode = "perf_db_export_mode";
1759 const char *perf_db_export_calls = "perf_db_export_calls";
1760 const char *perf_db_export_callchains = "perf_db_export_callchains";
1761 PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1762 bool export_calls = false;
1763 bool export_callchains = false;
1764 int ret;
1765
1766 memset(tables, 0, sizeof(struct tables));
1767 if (db_export__init(&tables->dbe))
1768 Py_FatalError("failed to initialize export");
1769
1770 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1771 if (!db_export_mode)
1772 return;
1773
1774 ret = PyObject_IsTrue(db_export_mode);
1775 if (ret == -1)
1776 handler_call_die(perf_db_export_mode);
1777 if (!ret)
1778 return;
1779
1780 /* handle export calls */
1781 tables->dbe.crp = NULL;
1782 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1783 if (db_export_calls) {
1784 ret = PyObject_IsTrue(db_export_calls);
1785 if (ret == -1)
1786 handler_call_die(perf_db_export_calls);
1787 export_calls = !!ret;
1788 }
1789
1790 if (export_calls) {
1791 tables->dbe.crp =
1792 call_return_processor__new(python_process_call_return,
1793 &tables->dbe);
1794 if (!tables->dbe.crp)
1795 Py_FatalError("failed to create calls processor");
1796 }
1797
1798 /* handle export callchains */
1799 tables->dbe.cpr = NULL;
1800 db_export_callchains = PyDict_GetItemString(main_dict,
1801 perf_db_export_callchains);
1802 if (db_export_callchains) {
1803 ret = PyObject_IsTrue(db_export_callchains);
1804 if (ret == -1)
1805 handler_call_die(perf_db_export_callchains);
1806 export_callchains = !!ret;
1807 }
1808
1809 if (export_callchains) {
1810 /*
1811 * Attempt to use the call path root from the call return
1812 * processor, if the call return processor is in use. Otherwise,
1813 * we allocate a new call path root. This prevents exporting
1814 * duplicate call path ids when both are in use simultaneously.
1815 */
1816 if (tables->dbe.crp)
1817 tables->dbe.cpr = tables->dbe.crp->cpr;
1818 else
1819 tables->dbe.cpr = call_path_root__new();
1820
1821 if (!tables->dbe.cpr)
1822 Py_FatalError("failed to create call path root");
1823 }
1824
1825 tables->db_export_mode = true;
1826 /*
1827 * Reserve per symbol space for symbol->db_id via symbol__priv()
1828 */
1829 symbol_conf.priv_size = sizeof(u64);
1830
1831 SET_TABLE_HANDLER(evsel);
1832 SET_TABLE_HANDLER(machine);
1833 SET_TABLE_HANDLER(thread);
1834 SET_TABLE_HANDLER(comm);
1835 SET_TABLE_HANDLER(comm_thread);
1836 SET_TABLE_HANDLER(dso);
1837 SET_TABLE_HANDLER(symbol);
1838 SET_TABLE_HANDLER(branch_type);
1839 SET_TABLE_HANDLER(sample);
1840 SET_TABLE_HANDLER(call_path);
1841 SET_TABLE_HANDLER(call_return);
1842 SET_TABLE_HANDLER(context_switch);
1843
1844 /*
1845 * Synthesized events are samples but with architecture-specific data
1846 * stored in sample->raw_data. They are exported via
1847 * python_export_sample() and consequently do not need a separate export
1848 * callback.
1849 */
1850 tables->synth_handler = get_handler("synth_data");
1851 }
1852
1853 #if PY_MAJOR_VERSION < 3
_free_command_line(const char ** command_line,int num)1854 static void _free_command_line(const char **command_line, int num)
1855 {
1856 free(command_line);
1857 }
1858 #else
_free_command_line(wchar_t ** command_line,int num)1859 static void _free_command_line(wchar_t **command_line, int num)
1860 {
1861 int i;
1862 for (i = 0; i < num; i++)
1863 PyMem_RawFree(command_line[i]);
1864 free(command_line);
1865 }
1866 #endif
1867
1868
1869 /*
1870 * Start trace script
1871 */
python_start_script(const char * script,int argc,const char ** argv,struct perf_session * session)1872 static int python_start_script(const char *script, int argc, const char **argv,
1873 struct perf_session *session)
1874 {
1875 struct tables *tables = &tables_global;
1876 #if PY_MAJOR_VERSION < 3
1877 const char **command_line;
1878 #else
1879 wchar_t **command_line;
1880 #endif
1881 /*
1882 * Use a non-const name variable to cope with python 2.6's
1883 * PyImport_AppendInittab prototype
1884 */
1885 char buf[PATH_MAX], name[19] = "perf_trace_context";
1886 int i, err = 0;
1887 FILE *fp;
1888
1889 scripting_context->session = session;
1890 #if PY_MAJOR_VERSION < 3
1891 command_line = malloc((argc + 1) * sizeof(const char *));
1892 command_line[0] = script;
1893 for (i = 1; i < argc + 1; i++)
1894 command_line[i] = argv[i - 1];
1895 PyImport_AppendInittab(name, initperf_trace_context);
1896 #else
1897 command_line = malloc((argc + 1) * sizeof(wchar_t *));
1898 command_line[0] = Py_DecodeLocale(script, NULL);
1899 for (i = 1; i < argc + 1; i++)
1900 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1901 PyImport_AppendInittab(name, PyInit_perf_trace_context);
1902 #endif
1903 Py_Initialize();
1904
1905 #if PY_MAJOR_VERSION < 3
1906 PySys_SetArgv(argc + 1, (char **)command_line);
1907 #else
1908 PySys_SetArgv(argc + 1, command_line);
1909 #endif
1910
1911 fp = fopen(script, "r");
1912 if (!fp) {
1913 sprintf(buf, "Can't open python script \"%s\"", script);
1914 perror(buf);
1915 err = -1;
1916 goto error;
1917 }
1918
1919 err = PyRun_SimpleFile(fp, script);
1920 if (err) {
1921 fprintf(stderr, "Error running python script %s\n", script);
1922 goto error;
1923 }
1924
1925 err = run_start_sub();
1926 if (err) {
1927 fprintf(stderr, "Error starting python script %s\n", script);
1928 goto error;
1929 }
1930
1931 set_table_handlers(tables);
1932
1933 if (tables->db_export_mode) {
1934 err = db_export__branch_types(&tables->dbe);
1935 if (err)
1936 goto error;
1937 }
1938
1939 _free_command_line(command_line, argc + 1);
1940
1941 return err;
1942 error:
1943 Py_Finalize();
1944 _free_command_line(command_line, argc + 1);
1945
1946 return err;
1947 }
1948
python_flush_script(void)1949 static int python_flush_script(void)
1950 {
1951 return 0;
1952 }
1953
1954 /*
1955 * Stop trace script
1956 */
python_stop_script(void)1957 static int python_stop_script(void)
1958 {
1959 struct tables *tables = &tables_global;
1960
1961 try_call_object("trace_end", NULL);
1962
1963 db_export__exit(&tables->dbe);
1964
1965 Py_XDECREF(main_dict);
1966 Py_XDECREF(main_module);
1967 Py_Finalize();
1968
1969 return 0;
1970 }
1971
python_generate_script(struct tep_handle * pevent,const char * outfile)1972 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1973 {
1974 int i, not_first, count, nr_events;
1975 struct tep_event **all_events;
1976 struct tep_event *event = NULL;
1977 struct tep_format_field *f;
1978 char fname[PATH_MAX];
1979 FILE *ofp;
1980
1981 sprintf(fname, "%s.py", outfile);
1982 ofp = fopen(fname, "w");
1983 if (ofp == NULL) {
1984 fprintf(stderr, "couldn't open %s\n", fname);
1985 return -1;
1986 }
1987 fprintf(ofp, "# perf script event handlers, "
1988 "generated by perf script -g python\n");
1989
1990 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1991 " License version 2\n\n");
1992
1993 fprintf(ofp, "# The common_* event handler fields are the most useful "
1994 "fields common to\n");
1995
1996 fprintf(ofp, "# all events. They don't necessarily correspond to "
1997 "the 'common_*' fields\n");
1998
1999 fprintf(ofp, "# in the format files. Those fields not available as "
2000 "handler params can\n");
2001
2002 fprintf(ofp, "# be retrieved using Python functions of the form "
2003 "common_*(context).\n");
2004
2005 fprintf(ofp, "# See the perf-script-python Documentation for the list "
2006 "of available functions.\n\n");
2007
2008 fprintf(ofp, "from __future__ import print_function\n\n");
2009 fprintf(ofp, "import os\n");
2010 fprintf(ofp, "import sys\n\n");
2011
2012 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2013 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2014 fprintf(ofp, "\nfrom perf_trace_context import *\n");
2015 fprintf(ofp, "from Core import *\n\n\n");
2016
2017 fprintf(ofp, "def trace_begin():\n");
2018 fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2019
2020 fprintf(ofp, "def trace_end():\n");
2021 fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2022
2023 nr_events = tep_get_events_count(pevent);
2024 all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2025
2026 for (i = 0; all_events && i < nr_events; i++) {
2027 event = all_events[i];
2028 fprintf(ofp, "def %s__%s(", event->system, event->name);
2029 fprintf(ofp, "event_name, ");
2030 fprintf(ofp, "context, ");
2031 fprintf(ofp, "common_cpu,\n");
2032 fprintf(ofp, "\tcommon_secs, ");
2033 fprintf(ofp, "common_nsecs, ");
2034 fprintf(ofp, "common_pid, ");
2035 fprintf(ofp, "common_comm,\n\t");
2036 fprintf(ofp, "common_callchain, ");
2037
2038 not_first = 0;
2039 count = 0;
2040
2041 for (f = event->format.fields; f; f = f->next) {
2042 if (not_first++)
2043 fprintf(ofp, ", ");
2044 if (++count % 5 == 0)
2045 fprintf(ofp, "\n\t");
2046
2047 fprintf(ofp, "%s", f->name);
2048 }
2049 if (not_first++)
2050 fprintf(ofp, ", ");
2051 if (++count % 5 == 0)
2052 fprintf(ofp, "\n\t\t");
2053 fprintf(ofp, "perf_sample_dict");
2054
2055 fprintf(ofp, "):\n");
2056
2057 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2058 "common_secs, common_nsecs,\n\t\t\t"
2059 "common_pid, common_comm)\n\n");
2060
2061 fprintf(ofp, "\t\tprint(\"");
2062
2063 not_first = 0;
2064 count = 0;
2065
2066 for (f = event->format.fields; f; f = f->next) {
2067 if (not_first++)
2068 fprintf(ofp, ", ");
2069 if (count && count % 3 == 0) {
2070 fprintf(ofp, "\" \\\n\t\t\"");
2071 }
2072 count++;
2073
2074 fprintf(ofp, "%s=", f->name);
2075 if (f->flags & TEP_FIELD_IS_STRING ||
2076 f->flags & TEP_FIELD_IS_FLAG ||
2077 f->flags & TEP_FIELD_IS_ARRAY ||
2078 f->flags & TEP_FIELD_IS_SYMBOLIC)
2079 fprintf(ofp, "%%s");
2080 else if (f->flags & TEP_FIELD_IS_SIGNED)
2081 fprintf(ofp, "%%d");
2082 else
2083 fprintf(ofp, "%%u");
2084 }
2085
2086 fprintf(ofp, "\" %% \\\n\t\t(");
2087
2088 not_first = 0;
2089 count = 0;
2090
2091 for (f = event->format.fields; f; f = f->next) {
2092 if (not_first++)
2093 fprintf(ofp, ", ");
2094
2095 if (++count % 5 == 0)
2096 fprintf(ofp, "\n\t\t");
2097
2098 if (f->flags & TEP_FIELD_IS_FLAG) {
2099 if ((count - 1) % 5 != 0) {
2100 fprintf(ofp, "\n\t\t");
2101 count = 4;
2102 }
2103 fprintf(ofp, "flag_str(\"");
2104 fprintf(ofp, "%s__%s\", ", event->system,
2105 event->name);
2106 fprintf(ofp, "\"%s\", %s)", f->name,
2107 f->name);
2108 } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2109 if ((count - 1) % 5 != 0) {
2110 fprintf(ofp, "\n\t\t");
2111 count = 4;
2112 }
2113 fprintf(ofp, "symbol_str(\"");
2114 fprintf(ofp, "%s__%s\", ", event->system,
2115 event->name);
2116 fprintf(ofp, "\"%s\", %s)", f->name,
2117 f->name);
2118 } else
2119 fprintf(ofp, "%s", f->name);
2120 }
2121
2122 fprintf(ofp, "))\n\n");
2123
2124 fprintf(ofp, "\t\tprint('Sample: {'+"
2125 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2126
2127 fprintf(ofp, "\t\tfor node in common_callchain:");
2128 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2129 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2130 fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2131 fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2132 fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso']) if 'dso' in node else \"\",");
2133 fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2134 fprintf(ofp, "\n\t\t\telse:");
2135 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2136 fprintf(ofp, "\t\tprint()\n\n");
2137
2138 }
2139
2140 fprintf(ofp, "def trace_unhandled(event_name, context, "
2141 "event_fields_dict, perf_sample_dict):\n");
2142
2143 fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2144 fprintf(ofp, "\t\tprint('Sample: {'+"
2145 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2146
2147 fprintf(ofp, "def print_header("
2148 "event_name, cpu, secs, nsecs, pid, comm):\n"
2149 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2150 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2151
2152 fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2153 "\treturn delimiter.join"
2154 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2155
2156 fclose(ofp);
2157
2158 fprintf(stderr, "generated Python script: %s\n", fname);
2159
2160 return 0;
2161 }
2162
2163 struct scripting_ops python_scripting_ops = {
2164 .name = "Python",
2165 .dirname = "python",
2166 .start_script = python_start_script,
2167 .flush_script = python_flush_script,
2168 .stop_script = python_stop_script,
2169 .process_event = python_process_event,
2170 .process_switch = python_process_switch,
2171 .process_auxtrace_error = python_process_auxtrace_error,
2172 .process_stat = python_process_stat,
2173 .process_stat_interval = python_process_stat_interval,
2174 .process_throttle = python_process_throttle,
2175 .generate_script = python_generate_script,
2176 };
2177