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Linux 4.19-rc7
[linux-2.6/btrfs-unstable.git] / tools / perf / util / python.c
blobce501ba14b088b112ed75ae4402562b4bcbd8eb1
1 // SPDX-License-Identifier: GPL-2.0
2 #include <Python.h>
3 #include <structmember.h>
4 #include <inttypes.h>
5 #include <poll.h>
6 #include <linux/err.h>
7 #include "evlist.h"
8 #include "callchain.h"
9 #include "evsel.h"
10 #include "event.h"
11 #include "cpumap.h"
12 #include "print_binary.h"
13 #include "thread_map.h"
14 #include "mmap.h"
15
16 #if PY_MAJOR_VERSION < 3
17 #define _PyUnicode_FromString(arg) \
18 PyString_FromString(arg)
19 #define _PyUnicode_AsString(arg) \
20 PyString_AsString(arg)
21 #define _PyUnicode_FromFormat(...) \
22 PyString_FromFormat(__VA_ARGS__)
23 #define _PyLong_FromLong(arg) \
24 PyInt_FromLong(arg)
25
26 #else
27
28 #define _PyUnicode_FromString(arg) \
29 PyUnicode_FromString(arg)
30 #define _PyUnicode_FromFormat(...) \
31 PyUnicode_FromFormat(__VA_ARGS__)
32 #define _PyLong_FromLong(arg) \
33 PyLong_FromLong(arg)
34 #endif
35
36 #ifndef Py_TYPE
37 #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
38 #endif
39
40 /*
41 * Provide these two so that we don't have to link against callchain.c and
42 * start dragging hist.c, etc.
43 */
44 struct callchain_param callchain_param;
45
46 int parse_callchain_record(const char *arg __maybe_unused,
47 struct callchain_param *param __maybe_unused)
48 {
49 return 0;
50 }
51
52 /*
53 * Support debug printing even though util/debug.c is not linked. That means
54 * implementing 'verbose' and 'eprintf'.
55 */
56 int verbose;
57
58 int eprintf(int level, int var, const char *fmt, ...)
59 {
60 va_list args;
61 int ret = 0;
62
63 if (var >= level) {
64 va_start(args, fmt);
65 ret = vfprintf(stderr, fmt, args);
66 va_end(args);
67 }
68
69 return ret;
70 }
71
72 /* Define PyVarObject_HEAD_INIT for python 2.5 */
73 #ifndef PyVarObject_HEAD_INIT
74 # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
75 #endif
76
77 #if PY_MAJOR_VERSION < 3
78 PyMODINIT_FUNC initperf(void);
79 #else
80 PyMODINIT_FUNC PyInit_perf(void);
81 #endif
82
83 #define member_def(type, member, ptype, help) \
84 { #member, ptype, \
85 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
86 0, help }
87
88 #define sample_member_def(name, member, ptype, help) \
89 { #name, ptype, \
90 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
91 0, help }
92
93 struct pyrf_event {
94 PyObject_HEAD
95 struct perf_evsel *evsel;
96 struct perf_sample sample;
97 union perf_event event;
98 };
99
100 #define sample_members \
101 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
102 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
103 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
104 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
105 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
106 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
107 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
108 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
109 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
110
111 static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
112
113 static PyMemberDef pyrf_mmap_event__members[] = {
114 sample_members
115 member_def(perf_event_header, type, T_UINT, "event type"),
116 member_def(perf_event_header, misc, T_UINT, "event misc"),
117 member_def(mmap_event, pid, T_UINT, "event pid"),
118 member_def(mmap_event, tid, T_UINT, "event tid"),
119 member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
120 member_def(mmap_event, len, T_ULONGLONG, "map length"),
121 member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
122 member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
123 { .name = NULL, },
124 };
125
126 static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
127 {
128 PyObject *ret;
129 char *s;
130
131 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
132 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
133 "filename: %s }",
134 pevent->event.mmap.pid, pevent->event.mmap.tid,
135 pevent->event.mmap.start, pevent->event.mmap.len,
136 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
137 ret = PyErr_NoMemory();
138 } else {
139 ret = _PyUnicode_FromString(s);
140 free(s);
141 }
142 return ret;
143 }
144
145 static PyTypeObject pyrf_mmap_event__type = {
146 PyVarObject_HEAD_INIT(NULL, 0)
147 .tp_name = "perf.mmap_event",
148 .tp_basicsize = sizeof(struct pyrf_event),
149 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
150 .tp_doc = pyrf_mmap_event__doc,
151 .tp_members = pyrf_mmap_event__members,
152 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
153 };
154
155 static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
156
157 static PyMemberDef pyrf_task_event__members[] = {
158 sample_members
159 member_def(perf_event_header, type, T_UINT, "event type"),
160 member_def(fork_event, pid, T_UINT, "event pid"),
161 member_def(fork_event, ppid, T_UINT, "event ppid"),
162 member_def(fork_event, tid, T_UINT, "event tid"),
163 member_def(fork_event, ptid, T_UINT, "event ptid"),
164 member_def(fork_event, time, T_ULONGLONG, "timestamp"),
165 { .name = NULL, },
166 };
167
168 static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
169 {
170 return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
171 "ptid: %u, time: %" PRIu64 "}",
172 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
173 pevent->event.fork.pid,
174 pevent->event.fork.ppid,
175 pevent->event.fork.tid,
176 pevent->event.fork.ptid,
177 pevent->event.fork.time);
178 }
179
180 static PyTypeObject pyrf_task_event__type = {
181 PyVarObject_HEAD_INIT(NULL, 0)
182 .tp_name = "perf.task_event",
183 .tp_basicsize = sizeof(struct pyrf_event),
184 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
185 .tp_doc = pyrf_task_event__doc,
186 .tp_members = pyrf_task_event__members,
187 .tp_repr = (reprfunc)pyrf_task_event__repr,
188 };
189
190 static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
191
192 static PyMemberDef pyrf_comm_event__members[] = {
193 sample_members
194 member_def(perf_event_header, type, T_UINT, "event type"),
195 member_def(comm_event, pid, T_UINT, "event pid"),
196 member_def(comm_event, tid, T_UINT, "event tid"),
197 member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
198 { .name = NULL, },
199 };
200
201 static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
202 {
203 return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
204 pevent->event.comm.pid,
205 pevent->event.comm.tid,
206 pevent->event.comm.comm);
207 }
208
209 static PyTypeObject pyrf_comm_event__type = {
210 PyVarObject_HEAD_INIT(NULL, 0)
211 .tp_name = "perf.comm_event",
212 .tp_basicsize = sizeof(struct pyrf_event),
213 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
214 .tp_doc = pyrf_comm_event__doc,
215 .tp_members = pyrf_comm_event__members,
216 .tp_repr = (reprfunc)pyrf_comm_event__repr,
217 };
218
219 static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
220
221 static PyMemberDef pyrf_throttle_event__members[] = {
222 sample_members
223 member_def(perf_event_header, type, T_UINT, "event type"),
224 member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
225 member_def(throttle_event, id, T_ULONGLONG, "event id"),
226 member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
227 { .name = NULL, },
228 };
229
230 static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
231 {
232 struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
233
234 return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
235 ", stream_id: %" PRIu64 " }",
236 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
237 te->time, te->id, te->stream_id);
238 }
239
240 static PyTypeObject pyrf_throttle_event__type = {
241 PyVarObject_HEAD_INIT(NULL, 0)
242 .tp_name = "perf.throttle_event",
243 .tp_basicsize = sizeof(struct pyrf_event),
244 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
245 .tp_doc = pyrf_throttle_event__doc,
246 .tp_members = pyrf_throttle_event__members,
247 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
248 };
249
250 static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
251
252 static PyMemberDef pyrf_lost_event__members[] = {
253 sample_members
254 member_def(lost_event, id, T_ULONGLONG, "event id"),
255 member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
256 { .name = NULL, },
257 };
258
259 static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
260 {
261 PyObject *ret;
262 char *s;
263
264 if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
265 "lost: %#" PRIx64 " }",
266 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
267 ret = PyErr_NoMemory();
268 } else {
269 ret = _PyUnicode_FromString(s);
270 free(s);
271 }
272 return ret;
273 }
274
275 static PyTypeObject pyrf_lost_event__type = {
276 PyVarObject_HEAD_INIT(NULL, 0)
277 .tp_name = "perf.lost_event",
278 .tp_basicsize = sizeof(struct pyrf_event),
279 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
280 .tp_doc = pyrf_lost_event__doc,
281 .tp_members = pyrf_lost_event__members,
282 .tp_repr = (reprfunc)pyrf_lost_event__repr,
283 };
284
285 static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
286
287 static PyMemberDef pyrf_read_event__members[] = {
288 sample_members
289 member_def(read_event, pid, T_UINT, "event pid"),
290 member_def(read_event, tid, T_UINT, "event tid"),
291 { .name = NULL, },
292 };
293
294 static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
295 {
296 return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
297 pevent->event.read.pid,
298 pevent->event.read.tid);
299 /*
300 * FIXME: return the array of read values,
301 * making this method useful ;-)
302 */
303 }
304
305 static PyTypeObject pyrf_read_event__type = {
306 PyVarObject_HEAD_INIT(NULL, 0)
307 .tp_name = "perf.read_event",
308 .tp_basicsize = sizeof(struct pyrf_event),
309 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
310 .tp_doc = pyrf_read_event__doc,
311 .tp_members = pyrf_read_event__members,
312 .tp_repr = (reprfunc)pyrf_read_event__repr,
313 };
314
315 static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
316
317 static PyMemberDef pyrf_sample_event__members[] = {
318 sample_members
319 member_def(perf_event_header, type, T_UINT, "event type"),
320 { .name = NULL, },
321 };
322
323 static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
324 {
325 PyObject *ret;
326 char *s;
327
328 if (asprintf(&s, "{ type: sample }") < 0) {
329 ret = PyErr_NoMemory();
330 } else {
331 ret = _PyUnicode_FromString(s);
332 free(s);
333 }
334 return ret;
335 }
336
337 static bool is_tracepoint(struct pyrf_event *pevent)
338 {
339 return pevent->evsel->attr.type == PERF_TYPE_TRACEPOINT;
340 }
341
342 static PyObject*
343 tracepoint_field(struct pyrf_event *pe, struct format_field *field)
344 {
345 struct tep_handle *pevent = field->event->pevent;
346 void *data = pe->sample.raw_data;
347 PyObject *ret = NULL;
348 unsigned long long val;
349 unsigned int offset, len;
350
351 if (field->flags & FIELD_IS_ARRAY) {
352 offset = field->offset;
353 len = field->size;
354 if (field->flags & FIELD_IS_DYNAMIC) {
355 val = tep_read_number(pevent, data + offset, len);
356 offset = val;
357 len = offset >> 16;
358 offset &= 0xffff;
359 }
360 if (field->flags & FIELD_IS_STRING &&
361 is_printable_array(data + offset, len)) {
362 ret = _PyUnicode_FromString((char *)data + offset);
363 } else {
364 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
365 field->flags &= ~FIELD_IS_STRING;
366 }
367 } else {
368 val = tep_read_number(pevent, data + field->offset,
369 field->size);
370 if (field->flags & FIELD_IS_POINTER)
371 ret = PyLong_FromUnsignedLong((unsigned long) val);
372 else if (field->flags & FIELD_IS_SIGNED)
373 ret = PyLong_FromLong((long) val);
374 else
375 ret = PyLong_FromUnsignedLong((unsigned long) val);
376 }
377
378 return ret;
379 }
380
381 static PyObject*
382 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
383 {
384 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
385 struct perf_evsel *evsel = pevent->evsel;
386 struct format_field *field;
387
388 if (!evsel->tp_format) {
389 struct event_format *tp_format;
390
391 tp_format = trace_event__tp_format_id(evsel->attr.config);
392 if (!tp_format)
393 return NULL;
394
395 evsel->tp_format = tp_format;
396 }
397
398 field = tep_find_any_field(evsel->tp_format, str);
399 if (!field)
400 return NULL;
401
402 return tracepoint_field(pevent, field);
403 }
404
405 static PyObject*
406 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
407 {
408 PyObject *obj = NULL;
409
410 if (is_tracepoint(pevent))
411 obj = get_tracepoint_field(pevent, attr_name);
412
413 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
414 }
415
416 static PyTypeObject pyrf_sample_event__type = {
417 PyVarObject_HEAD_INIT(NULL, 0)
418 .tp_name = "perf.sample_event",
419 .tp_basicsize = sizeof(struct pyrf_event),
420 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
421 .tp_doc = pyrf_sample_event__doc,
422 .tp_members = pyrf_sample_event__members,
423 .tp_repr = (reprfunc)pyrf_sample_event__repr,
424 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
425 };
426
427 static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
428
429 static PyMemberDef pyrf_context_switch_event__members[] = {
430 sample_members
431 member_def(perf_event_header, type, T_UINT, "event type"),
432 member_def(context_switch_event, next_prev_pid, T_UINT, "next/prev pid"),
433 member_def(context_switch_event, next_prev_tid, T_UINT, "next/prev tid"),
434 { .name = NULL, },
435 };
436
437 static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
438 {
439 PyObject *ret;
440 char *s;
441
442 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
443 pevent->event.context_switch.next_prev_pid,
444 pevent->event.context_switch.next_prev_tid,
445 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
446 ret = PyErr_NoMemory();
447 } else {
448 ret = _PyUnicode_FromString(s);
449 free(s);
450 }
451 return ret;
452 }
453
454 static PyTypeObject pyrf_context_switch_event__type = {
455 PyVarObject_HEAD_INIT(NULL, 0)
456 .tp_name = "perf.context_switch_event",
457 .tp_basicsize = sizeof(struct pyrf_event),
458 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
459 .tp_doc = pyrf_context_switch_event__doc,
460 .tp_members = pyrf_context_switch_event__members,
461 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
462 };
463
464 static int pyrf_event__setup_types(void)
465 {
466 int err;
467 pyrf_mmap_event__type.tp_new =
468 pyrf_task_event__type.tp_new =
469 pyrf_comm_event__type.tp_new =
470 pyrf_lost_event__type.tp_new =
471 pyrf_read_event__type.tp_new =
472 pyrf_sample_event__type.tp_new =
473 pyrf_context_switch_event__type.tp_new =
474 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
475 err = PyType_Ready(&pyrf_mmap_event__type);
476 if (err < 0)
477 goto out;
478 err = PyType_Ready(&pyrf_lost_event__type);
479 if (err < 0)
480 goto out;
481 err = PyType_Ready(&pyrf_task_event__type);
482 if (err < 0)
483 goto out;
484 err = PyType_Ready(&pyrf_comm_event__type);
485 if (err < 0)
486 goto out;
487 err = PyType_Ready(&pyrf_throttle_event__type);
488 if (err < 0)
489 goto out;
490 err = PyType_Ready(&pyrf_read_event__type);
491 if (err < 0)
492 goto out;
493 err = PyType_Ready(&pyrf_sample_event__type);
494 if (err < 0)
495 goto out;
496 err = PyType_Ready(&pyrf_context_switch_event__type);
497 if (err < 0)
498 goto out;
499 out:
500 return err;
501 }
502
503 static PyTypeObject *pyrf_event__type[] = {
504 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
505 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
506 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
507 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
508 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
509 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
510 [PERF_RECORD_FORK] = &pyrf_task_event__type,
511 [PERF_RECORD_READ] = &pyrf_read_event__type,
512 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
513 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
514 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
515 };
516
517 static PyObject *pyrf_event__new(union perf_event *event)
518 {
519 struct pyrf_event *pevent;
520 PyTypeObject *ptype;
521
522 if ((event->header.type < PERF_RECORD_MMAP ||
523 event->header.type > PERF_RECORD_SAMPLE) &&
524 !(event->header.type == PERF_RECORD_SWITCH ||
525 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
526 return NULL;
527
528 ptype = pyrf_event__type[event->header.type];
529 pevent = PyObject_New(struct pyrf_event, ptype);
530 if (pevent != NULL)
531 memcpy(&pevent->event, event, event->header.size);
532 return (PyObject *)pevent;
533 }
534
535 struct pyrf_cpu_map {
536 PyObject_HEAD
537
538 struct cpu_map *cpus;
539 };
540
541 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
542 PyObject *args, PyObject *kwargs)
543 {
544 static char *kwlist[] = { "cpustr", NULL };
545 char *cpustr = NULL;
546
547 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
548 kwlist, &cpustr))
549 return -1;
550
551 pcpus->cpus = cpu_map__new(cpustr);
552 if (pcpus->cpus == NULL)
553 return -1;
554 return 0;
555 }
556
557 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
558 {
559 cpu_map__put(pcpus->cpus);
560 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
561 }
562
563 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
564 {
565 struct pyrf_cpu_map *pcpus = (void *)obj;
566
567 return pcpus->cpus->nr;
568 }
569
570 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
571 {
572 struct pyrf_cpu_map *pcpus = (void *)obj;
573
574 if (i >= pcpus->cpus->nr)
575 return NULL;
576
577 return Py_BuildValue("i", pcpus->cpus->map[i]);
578 }
579
580 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
581 .sq_length = pyrf_cpu_map__length,
582 .sq_item = pyrf_cpu_map__item,
583 };
584
585 static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
586
587 static PyTypeObject pyrf_cpu_map__type = {
588 PyVarObject_HEAD_INIT(NULL, 0)
589 .tp_name = "perf.cpu_map",
590 .tp_basicsize = sizeof(struct pyrf_cpu_map),
591 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
592 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
593 .tp_doc = pyrf_cpu_map__doc,
594 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
595 .tp_init = (initproc)pyrf_cpu_map__init,
596 };
597
598 static int pyrf_cpu_map__setup_types(void)
599 {
600 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
601 return PyType_Ready(&pyrf_cpu_map__type);
602 }
603
604 struct pyrf_thread_map {
605 PyObject_HEAD
606
607 struct thread_map *threads;
608 };
609
610 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
611 PyObject *args, PyObject *kwargs)
612 {
613 static char *kwlist[] = { "pid", "tid", "uid", NULL };
614 int pid = -1, tid = -1, uid = UINT_MAX;
615
616 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
617 kwlist, &pid, &tid, &uid))
618 return -1;
619
620 pthreads->threads = thread_map__new(pid, tid, uid);
621 if (pthreads->threads == NULL)
622 return -1;
623 return 0;
624 }
625
626 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
627 {
628 thread_map__put(pthreads->threads);
629 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
630 }
631
632 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
633 {
634 struct pyrf_thread_map *pthreads = (void *)obj;
635
636 return pthreads->threads->nr;
637 }
638
639 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
640 {
641 struct pyrf_thread_map *pthreads = (void *)obj;
642
643 if (i >= pthreads->threads->nr)
644 return NULL;
645
646 return Py_BuildValue("i", pthreads->threads->map[i]);
647 }
648
649 static PySequenceMethods pyrf_thread_map__sequence_methods = {
650 .sq_length = pyrf_thread_map__length,
651 .sq_item = pyrf_thread_map__item,
652 };
653
654 static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
655
656 static PyTypeObject pyrf_thread_map__type = {
657 PyVarObject_HEAD_INIT(NULL, 0)
658 .tp_name = "perf.thread_map",
659 .tp_basicsize = sizeof(struct pyrf_thread_map),
660 .tp_dealloc = (destructor)pyrf_thread_map__delete,
661 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
662 .tp_doc = pyrf_thread_map__doc,
663 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
664 .tp_init = (initproc)pyrf_thread_map__init,
665 };
666
667 static int pyrf_thread_map__setup_types(void)
668 {
669 pyrf_thread_map__type.tp_new = PyType_GenericNew;
670 return PyType_Ready(&pyrf_thread_map__type);
671 }
672
673 struct pyrf_evsel {
674 PyObject_HEAD
675
676 struct perf_evsel evsel;
677 };
678
679 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
680 PyObject *args, PyObject *kwargs)
681 {
682 struct perf_event_attr attr = {
683 .type = PERF_TYPE_HARDWARE,
684 .config = PERF_COUNT_HW_CPU_CYCLES,
685 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
686 };
687 static char *kwlist[] = {
688 "type",
689 "config",
690 "sample_freq",
691 "sample_period",
692 "sample_type",
693 "read_format",
694 "disabled",
695 "inherit",
696 "pinned",
697 "exclusive",
698 "exclude_user",
699 "exclude_kernel",
700 "exclude_hv",
701 "exclude_idle",
702 "mmap",
703 "context_switch",
704 "comm",
705 "freq",
706 "inherit_stat",
707 "enable_on_exec",
708 "task",
709 "watermark",
710 "precise_ip",
711 "mmap_data",
712 "sample_id_all",
713 "wakeup_events",
714 "bp_type",
715 "bp_addr",
716 "bp_len",
717 NULL
718 };
719 u64 sample_period = 0;
720 u32 disabled = 0,
721 inherit = 0,
722 pinned = 0,
723 exclusive = 0,
724 exclude_user = 0,
725 exclude_kernel = 0,
726 exclude_hv = 0,
727 exclude_idle = 0,
728 mmap = 0,
729 context_switch = 0,
730 comm = 0,
731 freq = 1,
732 inherit_stat = 0,
733 enable_on_exec = 0,
734 task = 0,
735 watermark = 0,
736 precise_ip = 0,
737 mmap_data = 0,
738 sample_id_all = 1;
739 int idx = 0;
740
741 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
742 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
743 &attr.type, &attr.config, &attr.sample_freq,
744 &sample_period, &attr.sample_type,
745 &attr.read_format, &disabled, &inherit,
746 &pinned, &exclusive, &exclude_user,
747 &exclude_kernel, &exclude_hv, &exclude_idle,
748 &mmap, &context_switch, &comm, &freq, &inherit_stat,
749 &enable_on_exec, &task, &watermark,
750 &precise_ip, &mmap_data, &sample_id_all,
751 &attr.wakeup_events, &attr.bp_type,
752 &attr.bp_addr, &attr.bp_len, &idx))
753 return -1;
754
755 /* union... */
756 if (sample_period != 0) {
757 if (attr.sample_freq != 0)
758 return -1; /* FIXME: throw right exception */
759 attr.sample_period = sample_period;
760 }
761
762 /* Bitfields */
763 attr.disabled = disabled;
764 attr.inherit = inherit;
765 attr.pinned = pinned;
766 attr.exclusive = exclusive;
767 attr.exclude_user = exclude_user;
768 attr.exclude_kernel = exclude_kernel;
769 attr.exclude_hv = exclude_hv;
770 attr.exclude_idle = exclude_idle;
771 attr.mmap = mmap;
772 attr.context_switch = context_switch;
773 attr.comm = comm;
774 attr.freq = freq;
775 attr.inherit_stat = inherit_stat;
776 attr.enable_on_exec = enable_on_exec;
777 attr.task = task;
778 attr.watermark = watermark;
779 attr.precise_ip = precise_ip;
780 attr.mmap_data = mmap_data;
781 attr.sample_id_all = sample_id_all;
782 attr.size = sizeof(attr);
783
784 perf_evsel__init(&pevsel->evsel, &attr, idx);
785 return 0;
786 }
787
788 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
789 {
790 perf_evsel__exit(&pevsel->evsel);
791 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
792 }
793
794 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
795 PyObject *args, PyObject *kwargs)
796 {
797 struct perf_evsel *evsel = &pevsel->evsel;
798 struct cpu_map *cpus = NULL;
799 struct thread_map *threads = NULL;
800 PyObject *pcpus = NULL, *pthreads = NULL;
801 int group = 0, inherit = 0;
802 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
803
804 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
805 &pcpus, &pthreads, &group, &inherit))
806 return NULL;
807
808 if (pthreads != NULL)
809 threads = ((struct pyrf_thread_map *)pthreads)->threads;
810
811 if (pcpus != NULL)
812 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
813
814 evsel->attr.inherit = inherit;
815 /*
816 * This will group just the fds for this single evsel, to group
817 * multiple events, use evlist.open().
818 */
819 if (perf_evsel__open(evsel, cpus, threads) < 0) {
820 PyErr_SetFromErrno(PyExc_OSError);
821 return NULL;
822 }
823
824 Py_INCREF(Py_None);
825 return Py_None;
826 }
827
828 static PyMethodDef pyrf_evsel__methods[] = {
829 {
830 .ml_name = "open",
831 .ml_meth = (PyCFunction)pyrf_evsel__open,
832 .ml_flags = METH_VARARGS | METH_KEYWORDS,
833 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
834 },
835 { .ml_name = NULL, }
836 };
837
838 static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
839
840 static PyTypeObject pyrf_evsel__type = {
841 PyVarObject_HEAD_INIT(NULL, 0)
842 .tp_name = "perf.evsel",
843 .tp_basicsize = sizeof(struct pyrf_evsel),
844 .tp_dealloc = (destructor)pyrf_evsel__delete,
845 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
846 .tp_doc = pyrf_evsel__doc,
847 .tp_methods = pyrf_evsel__methods,
848 .tp_init = (initproc)pyrf_evsel__init,
849 };
850
851 static int pyrf_evsel__setup_types(void)
852 {
853 pyrf_evsel__type.tp_new = PyType_GenericNew;
854 return PyType_Ready(&pyrf_evsel__type);
855 }
856
857 struct pyrf_evlist {
858 PyObject_HEAD
859
860 struct perf_evlist evlist;
861 };
862
863 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
864 PyObject *args, PyObject *kwargs __maybe_unused)
865 {
866 PyObject *pcpus = NULL, *pthreads = NULL;
867 struct cpu_map *cpus;
868 struct thread_map *threads;
869
870 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
871 return -1;
872
873 threads = ((struct pyrf_thread_map *)pthreads)->threads;
874 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
875 perf_evlist__init(&pevlist->evlist, cpus, threads);
876 return 0;
877 }
878
879 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
880 {
881 perf_evlist__exit(&pevlist->evlist);
882 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
883 }
884
885 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
886 PyObject *args, PyObject *kwargs)
887 {
888 struct perf_evlist *evlist = &pevlist->evlist;
889 static char *kwlist[] = { "pages", "overwrite", NULL };
890 int pages = 128, overwrite = false;
891
892 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
893 &pages, &overwrite))
894 return NULL;
895
896 if (perf_evlist__mmap(evlist, pages) < 0) {
897 PyErr_SetFromErrno(PyExc_OSError);
898 return NULL;
899 }
900
901 Py_INCREF(Py_None);
902 return Py_None;
903 }
904
905 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
906 PyObject *args, PyObject *kwargs)
907 {
908 struct perf_evlist *evlist = &pevlist->evlist;
909 static char *kwlist[] = { "timeout", NULL };
910 int timeout = -1, n;
911
912 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
913 return NULL;
914
915 n = perf_evlist__poll(evlist, timeout);
916 if (n < 0) {
917 PyErr_SetFromErrno(PyExc_OSError);
918 return NULL;
919 }
920
921 return Py_BuildValue("i", n);
922 }
923
924 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
925 PyObject *args __maybe_unused,
926 PyObject *kwargs __maybe_unused)
927 {
928 struct perf_evlist *evlist = &pevlist->evlist;
929 PyObject *list = PyList_New(0);
930 int i;
931
932 for (i = 0; i < evlist->pollfd.nr; ++i) {
933 PyObject *file;
934 #if PY_MAJOR_VERSION < 3
935 FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
936
937 if (fp == NULL)
938 goto free_list;
939
940 file = PyFile_FromFile(fp, "perf", "r", NULL);
941 #else
942 file = PyFile_FromFd(evlist->pollfd.entries[i].fd, "perf", "r", -1, NULL, NULL, NULL, 1);
943 #endif
944 if (file == NULL)
945 goto free_list;
946
947 if (PyList_Append(list, file) != 0) {
948 Py_DECREF(file);
949 goto free_list;
950 }
951
952 Py_DECREF(file);
953 }
954
955 return list;
956 free_list:
957 return PyErr_NoMemory();
958 }
959
960
961 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
962 PyObject *args,
963 PyObject *kwargs __maybe_unused)
964 {
965 struct perf_evlist *evlist = &pevlist->evlist;
966 PyObject *pevsel;
967 struct perf_evsel *evsel;
968
969 if (!PyArg_ParseTuple(args, "O", &pevsel))
970 return NULL;
971
972 Py_INCREF(pevsel);
973 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
974 evsel->idx = evlist->nr_entries;
975 perf_evlist__add(evlist, evsel);
976
977 return Py_BuildValue("i", evlist->nr_entries);
978 }
979
980 static struct perf_mmap *get_md(struct perf_evlist *evlist, int cpu)
981 {
982 int i;
983
984 for (i = 0; i < evlist->nr_mmaps; i++) {
985 struct perf_mmap *md = &evlist->mmap[i];
986
987 if (md->cpu == cpu)
988 return md;
989 }
990
991 return NULL;
992 }
993
994 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
995 PyObject *args, PyObject *kwargs)
996 {
997 struct perf_evlist *evlist = &pevlist->evlist;
998 union perf_event *event;
999 int sample_id_all = 1, cpu;
1000 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1001 struct perf_mmap *md;
1002 int err;
1003
1004 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1005 &cpu, &sample_id_all))
1006 return NULL;
1007
1008 md = get_md(evlist, cpu);
1009 if (!md)
1010 return NULL;
1011
1012 if (perf_mmap__read_init(md) < 0)
1013 goto end;
1014
1015 event = perf_mmap__read_event(md);
1016 if (event != NULL) {
1017 PyObject *pyevent = pyrf_event__new(event);
1018 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1019 struct perf_evsel *evsel;
1020
1021 if (pyevent == NULL)
1022 return PyErr_NoMemory();
1023
1024 evsel = perf_evlist__event2evsel(evlist, event);
1025 if (!evsel) {
1026 Py_INCREF(Py_None);
1027 return Py_None;
1028 }
1029
1030 pevent->evsel = evsel;
1031
1032 err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
1033
1034 /* Consume the even only after we parsed it out. */
1035 perf_mmap__consume(md);
1036
1037 if (err)
1038 return PyErr_Format(PyExc_OSError,
1039 "perf: can't parse sample, err=%d", err);
1040 return pyevent;
1041 }
1042 end:
1043 Py_INCREF(Py_None);
1044 return Py_None;
1045 }
1046
1047 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1048 PyObject *args, PyObject *kwargs)
1049 {
1050 struct perf_evlist *evlist = &pevlist->evlist;
1051 int group = 0;
1052 static char *kwlist[] = { "group", NULL };
1053
1054 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1055 return NULL;
1056
1057 if (group)
1058 perf_evlist__set_leader(evlist);
1059
1060 if (perf_evlist__open(evlist) < 0) {
1061 PyErr_SetFromErrno(PyExc_OSError);
1062 return NULL;
1063 }
1064
1065 Py_INCREF(Py_None);
1066 return Py_None;
1067 }
1068
1069 static PyMethodDef pyrf_evlist__methods[] = {
1070 {
1071 .ml_name = "mmap",
1072 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1073 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1074 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1075 },
1076 {
1077 .ml_name = "open",
1078 .ml_meth = (PyCFunction)pyrf_evlist__open,
1079 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1080 .ml_doc = PyDoc_STR("open the file descriptors.")
1081 },
1082 {
1083 .ml_name = "poll",
1084 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1085 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1086 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1087 },
1088 {
1089 .ml_name = "get_pollfd",
1090 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1091 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1092 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1093 },
1094 {
1095 .ml_name = "add",
1096 .ml_meth = (PyCFunction)pyrf_evlist__add,
1097 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1098 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1099 },
1100 {
1101 .ml_name = "read_on_cpu",
1102 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1103 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1104 .ml_doc = PyDoc_STR("reads an event.")
1105 },
1106 { .ml_name = NULL, }
1107 };
1108
1109 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1110 {
1111 struct pyrf_evlist *pevlist = (void *)obj;
1112
1113 return pevlist->evlist.nr_entries;
1114 }
1115
1116 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1117 {
1118 struct pyrf_evlist *pevlist = (void *)obj;
1119 struct perf_evsel *pos;
1120
1121 if (i >= pevlist->evlist.nr_entries)
1122 return NULL;
1123
1124 evlist__for_each_entry(&pevlist->evlist, pos) {
1125 if (i-- == 0)
1126 break;
1127 }
1128
1129 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1130 }
1131
1132 static PySequenceMethods pyrf_evlist__sequence_methods = {
1133 .sq_length = pyrf_evlist__length,
1134 .sq_item = pyrf_evlist__item,
1135 };
1136
1137 static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1138
1139 static PyTypeObject pyrf_evlist__type = {
1140 PyVarObject_HEAD_INIT(NULL, 0)
1141 .tp_name = "perf.evlist",
1142 .tp_basicsize = sizeof(struct pyrf_evlist),
1143 .tp_dealloc = (destructor)pyrf_evlist__delete,
1144 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1145 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1146 .tp_doc = pyrf_evlist__doc,
1147 .tp_methods = pyrf_evlist__methods,
1148 .tp_init = (initproc)pyrf_evlist__init,
1149 };
1150
1151 static int pyrf_evlist__setup_types(void)
1152 {
1153 pyrf_evlist__type.tp_new = PyType_GenericNew;
1154 return PyType_Ready(&pyrf_evlist__type);
1155 }
1156
1157 #define PERF_CONST(name) { #name, PERF_##name }
1158
1159 static struct {
1160 const char *name;
1161 int value;
1162 } perf__constants[] = {
1163 PERF_CONST(TYPE_HARDWARE),
1164 PERF_CONST(TYPE_SOFTWARE),
1165 PERF_CONST(TYPE_TRACEPOINT),
1166 PERF_CONST(TYPE_HW_CACHE),
1167 PERF_CONST(TYPE_RAW),
1168 PERF_CONST(TYPE_BREAKPOINT),
1169
1170 PERF_CONST(COUNT_HW_CPU_CYCLES),
1171 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1172 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1173 PERF_CONST(COUNT_HW_CACHE_MISSES),
1174 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1175 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1176 PERF_CONST(COUNT_HW_BUS_CYCLES),
1177 PERF_CONST(COUNT_HW_CACHE_L1D),
1178 PERF_CONST(COUNT_HW_CACHE_L1I),
1179 PERF_CONST(COUNT_HW_CACHE_LL),
1180 PERF_CONST(COUNT_HW_CACHE_DTLB),
1181 PERF_CONST(COUNT_HW_CACHE_ITLB),
1182 PERF_CONST(COUNT_HW_CACHE_BPU),
1183 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1184 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1185 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1186 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1187 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1188
1189 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1190 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1191
1192 PERF_CONST(COUNT_SW_CPU_CLOCK),
1193 PERF_CONST(COUNT_SW_TASK_CLOCK),
1194 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1195 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1196 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1197 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1198 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1199 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1200 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1201 PERF_CONST(COUNT_SW_DUMMY),
1202
1203 PERF_CONST(SAMPLE_IP),
1204 PERF_CONST(SAMPLE_TID),
1205 PERF_CONST(SAMPLE_TIME),
1206 PERF_CONST(SAMPLE_ADDR),
1207 PERF_CONST(SAMPLE_READ),
1208 PERF_CONST(SAMPLE_CALLCHAIN),
1209 PERF_CONST(SAMPLE_ID),
1210 PERF_CONST(SAMPLE_CPU),
1211 PERF_CONST(SAMPLE_PERIOD),
1212 PERF_CONST(SAMPLE_STREAM_ID),
1213 PERF_CONST(SAMPLE_RAW),
1214
1215 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1216 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1217 PERF_CONST(FORMAT_ID),
1218 PERF_CONST(FORMAT_GROUP),
1219
1220 PERF_CONST(RECORD_MMAP),
1221 PERF_CONST(RECORD_LOST),
1222 PERF_CONST(RECORD_COMM),
1223 PERF_CONST(RECORD_EXIT),
1224 PERF_CONST(RECORD_THROTTLE),
1225 PERF_CONST(RECORD_UNTHROTTLE),
1226 PERF_CONST(RECORD_FORK),
1227 PERF_CONST(RECORD_READ),
1228 PERF_CONST(RECORD_SAMPLE),
1229 PERF_CONST(RECORD_MMAP2),
1230 PERF_CONST(RECORD_AUX),
1231 PERF_CONST(RECORD_ITRACE_START),
1232 PERF_CONST(RECORD_LOST_SAMPLES),
1233 PERF_CONST(RECORD_SWITCH),
1234 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1235
1236 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1237 { .name = NULL, },
1238 };
1239
1240 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1241 PyObject *args, PyObject *kwargs)
1242 {
1243 struct event_format *tp_format;
1244 static char *kwlist[] = { "sys", "name", NULL };
1245 char *sys = NULL;
1246 char *name = NULL;
1247
1248 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1249 &sys, &name))
1250 return NULL;
1251
1252 tp_format = trace_event__tp_format(sys, name);
1253 if (IS_ERR(tp_format))
1254 return _PyLong_FromLong(-1);
1255
1256 return _PyLong_FromLong(tp_format->id);
1257 }
1258
1259 static PyMethodDef perf__methods[] = {
1260 {
1261 .ml_name = "tracepoint",
1262 .ml_meth = (PyCFunction) pyrf__tracepoint,
1263 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1264 .ml_doc = PyDoc_STR("Get tracepoint config.")
1265 },
1266 { .ml_name = NULL, }
1267 };
1268
1269 #if PY_MAJOR_VERSION < 3
1270 PyMODINIT_FUNC initperf(void)
1271 #else
1272 PyMODINIT_FUNC PyInit_perf(void)
1273 #endif
1274 {
1275 PyObject *obj;
1276 int i;
1277 PyObject *dict;
1278 #if PY_MAJOR_VERSION < 3
1279 PyObject *module = Py_InitModule("perf", perf__methods);
1280 #else
1281 static struct PyModuleDef moduledef = {
1282 PyModuleDef_HEAD_INIT,
1283 "perf", /* m_name */
1284 "", /* m_doc */
1285 -1, /* m_size */
1286 perf__methods, /* m_methods */
1287 NULL, /* m_reload */
1288 NULL, /* m_traverse */
1289 NULL, /* m_clear */
1290 NULL, /* m_free */
1291 };
1292 PyObject *module = PyModule_Create(&moduledef);
1293 #endif
1294
1295 if (module == NULL ||
1296 pyrf_event__setup_types() < 0 ||
1297 pyrf_evlist__setup_types() < 0 ||
1298 pyrf_evsel__setup_types() < 0 ||
1299 pyrf_thread_map__setup_types() < 0 ||
1300 pyrf_cpu_map__setup_types() < 0)
1301 #if PY_MAJOR_VERSION < 3
1302 return;
1303 #else
1304 return module;
1305 #endif
1306
1307 /* The page_size is placed in util object. */
1308 page_size = sysconf(_SC_PAGE_SIZE);
1309
1310 Py_INCREF(&pyrf_evlist__type);
1311 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1312
1313 Py_INCREF(&pyrf_evsel__type);
1314 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1315
1316 Py_INCREF(&pyrf_mmap_event__type);
1317 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1318
1319 Py_INCREF(&pyrf_lost_event__type);
1320 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1321
1322 Py_INCREF(&pyrf_comm_event__type);
1323 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1324
1325 Py_INCREF(&pyrf_task_event__type);
1326 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1327
1328 Py_INCREF(&pyrf_throttle_event__type);
1329 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1330
1331 Py_INCREF(&pyrf_task_event__type);
1332 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1333
1334 Py_INCREF(&pyrf_read_event__type);
1335 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1336
1337 Py_INCREF(&pyrf_sample_event__type);
1338 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1339
1340 Py_INCREF(&pyrf_context_switch_event__type);
1341 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1342
1343 Py_INCREF(&pyrf_thread_map__type);
1344 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1345
1346 Py_INCREF(&pyrf_cpu_map__type);
1347 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1348
1349 dict = PyModule_GetDict(module);
1350 if (dict == NULL)
1351 goto error;
1352
1353 for (i = 0; perf__constants[i].name != NULL; i++) {
1354 obj = _PyLong_FromLong(perf__constants[i].value);
1355 if (obj == NULL)
1356 goto error;
1357 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1358 Py_DECREF(obj);
1359 }
1360
1361 error:
1362 if (PyErr_Occurred())
1363 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1364 #if PY_MAJOR_VERSION >= 3
1365 return module;
1366 #endif
1367 }
1368
1369 /*
1370 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1371 * binding.
1372 */
1373 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1374 int fd, int group_fd, unsigned long flags)
1375 {
1376 }
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