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 <perf/cpumap.h>
8 #ifdef HAVE_LIBTRACEEVENT
9 #include <event-parse.h>
10 #endif
11 #include <perf/mmap.h>
12 #include "callchain.h"
13 #include "evlist.h"
14 #include "evsel.h"
15 #include "event.h"
16 #include "print_binary.h"
17 #include "record.h"
18 #include "strbuf.h"
19 #include "thread_map.h"
20 #include "trace-event.h"
21 #include "mmap.h"
22 #include "util/sample.h"
23 #include <internal/lib.h>
24
25 PyMODINIT_FUNC PyInit_perf(void);
26
27 #define member_def(type, member, ptype, help) \
28 { #member, ptype, \
29 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
30 0, help }
31
32 #define sample_member_def(name, member, ptype, help) \
33 { #name, ptype, \
34 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
35 0, help }
36
37 struct pyrf_event {
38 PyObject_HEAD
39 struct evsel *evsel;
40 struct perf_sample sample;
41 union perf_event event;
42 };
43
44 #define sample_members \
45 sample_member_def(sample_ip, ip, T_ULONGLONG, "event ip"), \
46 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
47 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
48 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
49 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
50 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
51 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
52 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
53 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
54
55 static const char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
56
57 static PyMemberDef pyrf_mmap_event__members[] = {
58 sample_members
59 member_def(perf_event_header, type, T_UINT, "event type"),
60 member_def(perf_event_header, misc, T_UINT, "event misc"),
61 member_def(perf_record_mmap, pid, T_UINT, "event pid"),
62 member_def(perf_record_mmap, tid, T_UINT, "event tid"),
63 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
64 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
65 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
66 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
67 { .name = NULL, },
68 };
69
pyrf_mmap_event__repr(const struct pyrf_event * pevent)70 static PyObject *pyrf_mmap_event__repr(const struct pyrf_event *pevent)
71 {
72 PyObject *ret;
73 char *s;
74
75 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
76 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
77 "filename: %s }",
78 pevent->event.mmap.pid, pevent->event.mmap.tid,
79 pevent->event.mmap.start, pevent->event.mmap.len,
80 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
81 ret = PyErr_NoMemory();
82 } else {
83 ret = PyUnicode_FromString(s);
84 free(s);
85 }
86 return ret;
87 }
88
89 static PyTypeObject pyrf_mmap_event__type = {
90 PyVarObject_HEAD_INIT(NULL, 0)
91 .tp_name = "perf.mmap_event",
92 .tp_basicsize = sizeof(struct pyrf_event),
93 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
94 .tp_doc = pyrf_mmap_event__doc,
95 .tp_members = pyrf_mmap_event__members,
96 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
97 };
98
99 static const char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
100
101 static PyMemberDef pyrf_task_event__members[] = {
102 sample_members
103 member_def(perf_event_header, type, T_UINT, "event type"),
104 member_def(perf_record_fork, pid, T_UINT, "event pid"),
105 member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
106 member_def(perf_record_fork, tid, T_UINT, "event tid"),
107 member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
108 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
109 { .name = NULL, },
110 };
111
pyrf_task_event__repr(const struct pyrf_event * pevent)112 static PyObject *pyrf_task_event__repr(const struct pyrf_event *pevent)
113 {
114 return PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
115 "ptid: %u, time: %" PRI_lu64 "}",
116 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
117 pevent->event.fork.pid,
118 pevent->event.fork.ppid,
119 pevent->event.fork.tid,
120 pevent->event.fork.ptid,
121 pevent->event.fork.time);
122 }
123
124 static PyTypeObject pyrf_task_event__type = {
125 PyVarObject_HEAD_INIT(NULL, 0)
126 .tp_name = "perf.task_event",
127 .tp_basicsize = sizeof(struct pyrf_event),
128 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
129 .tp_doc = pyrf_task_event__doc,
130 .tp_members = pyrf_task_event__members,
131 .tp_repr = (reprfunc)pyrf_task_event__repr,
132 };
133
134 static const char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
135
136 static PyMemberDef pyrf_comm_event__members[] = {
137 sample_members
138 member_def(perf_event_header, type, T_UINT, "event type"),
139 member_def(perf_record_comm, pid, T_UINT, "event pid"),
140 member_def(perf_record_comm, tid, T_UINT, "event tid"),
141 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
142 { .name = NULL, },
143 };
144
pyrf_comm_event__repr(const struct pyrf_event * pevent)145 static PyObject *pyrf_comm_event__repr(const struct pyrf_event *pevent)
146 {
147 return PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
148 pevent->event.comm.pid,
149 pevent->event.comm.tid,
150 pevent->event.comm.comm);
151 }
152
153 static PyTypeObject pyrf_comm_event__type = {
154 PyVarObject_HEAD_INIT(NULL, 0)
155 .tp_name = "perf.comm_event",
156 .tp_basicsize = sizeof(struct pyrf_event),
157 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
158 .tp_doc = pyrf_comm_event__doc,
159 .tp_members = pyrf_comm_event__members,
160 .tp_repr = (reprfunc)pyrf_comm_event__repr,
161 };
162
163 static const char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
164
165 static PyMemberDef pyrf_throttle_event__members[] = {
166 sample_members
167 member_def(perf_event_header, type, T_UINT, "event type"),
168 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
169 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
170 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
171 { .name = NULL, },
172 };
173
pyrf_throttle_event__repr(const struct pyrf_event * pevent)174 static PyObject *pyrf_throttle_event__repr(const struct pyrf_event *pevent)
175 {
176 const struct perf_record_throttle *te = (const struct perf_record_throttle *)
177 (&pevent->event.header + 1);
178
179 return PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
180 ", stream_id: %" PRI_lu64 " }",
181 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
182 te->time, te->id, te->stream_id);
183 }
184
185 static PyTypeObject pyrf_throttle_event__type = {
186 PyVarObject_HEAD_INIT(NULL, 0)
187 .tp_name = "perf.throttle_event",
188 .tp_basicsize = sizeof(struct pyrf_event),
189 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
190 .tp_doc = pyrf_throttle_event__doc,
191 .tp_members = pyrf_throttle_event__members,
192 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
193 };
194
195 static const char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
196
197 static PyMemberDef pyrf_lost_event__members[] = {
198 sample_members
199 member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
200 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
201 { .name = NULL, },
202 };
203
pyrf_lost_event__repr(const struct pyrf_event * pevent)204 static PyObject *pyrf_lost_event__repr(const struct pyrf_event *pevent)
205 {
206 PyObject *ret;
207 char *s;
208
209 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
210 "lost: %#" PRI_lx64 " }",
211 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
212 ret = PyErr_NoMemory();
213 } else {
214 ret = PyUnicode_FromString(s);
215 free(s);
216 }
217 return ret;
218 }
219
220 static PyTypeObject pyrf_lost_event__type = {
221 PyVarObject_HEAD_INIT(NULL, 0)
222 .tp_name = "perf.lost_event",
223 .tp_basicsize = sizeof(struct pyrf_event),
224 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
225 .tp_doc = pyrf_lost_event__doc,
226 .tp_members = pyrf_lost_event__members,
227 .tp_repr = (reprfunc)pyrf_lost_event__repr,
228 };
229
230 static const char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
231
232 static PyMemberDef pyrf_read_event__members[] = {
233 sample_members
234 member_def(perf_record_read, pid, T_UINT, "event pid"),
235 member_def(perf_record_read, tid, T_UINT, "event tid"),
236 { .name = NULL, },
237 };
238
pyrf_read_event__repr(const struct pyrf_event * pevent)239 static PyObject *pyrf_read_event__repr(const struct pyrf_event *pevent)
240 {
241 return PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
242 pevent->event.read.pid,
243 pevent->event.read.tid);
244 /*
245 * FIXME: return the array of read values,
246 * making this method useful ;-)
247 */
248 }
249
250 static PyTypeObject pyrf_read_event__type = {
251 PyVarObject_HEAD_INIT(NULL, 0)
252 .tp_name = "perf.read_event",
253 .tp_basicsize = sizeof(struct pyrf_event),
254 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
255 .tp_doc = pyrf_read_event__doc,
256 .tp_members = pyrf_read_event__members,
257 .tp_repr = (reprfunc)pyrf_read_event__repr,
258 };
259
260 static const char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
261
262 static PyMemberDef pyrf_sample_event__members[] = {
263 sample_members
264 member_def(perf_event_header, type, T_UINT, "event type"),
265 { .name = NULL, },
266 };
267
pyrf_sample_event__delete(struct pyrf_event * pevent)268 static void pyrf_sample_event__delete(struct pyrf_event *pevent)
269 {
270 perf_sample__exit(&pevent->sample);
271 Py_TYPE(pevent)->tp_free((PyObject*)pevent);
272 }
273
pyrf_sample_event__repr(const struct pyrf_event * pevent)274 static PyObject *pyrf_sample_event__repr(const struct pyrf_event *pevent)
275 {
276 PyObject *ret;
277 char *s;
278
279 if (asprintf(&s, "{ type: sample }") < 0) {
280 ret = PyErr_NoMemory();
281 } else {
282 ret = PyUnicode_FromString(s);
283 free(s);
284 }
285 return ret;
286 }
287
288 #ifdef HAVE_LIBTRACEEVENT
is_tracepoint(const struct pyrf_event * pevent)289 static bool is_tracepoint(const struct pyrf_event *pevent)
290 {
291 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
292 }
293
294 static PyObject*
tracepoint_field(const struct pyrf_event * pe,struct tep_format_field * field)295 tracepoint_field(const struct pyrf_event *pe, struct tep_format_field *field)
296 {
297 struct tep_handle *pevent = field->event->tep;
298 void *data = pe->sample.raw_data;
299 PyObject *ret = NULL;
300 unsigned long long val;
301 unsigned int offset, len;
302
303 if (field->flags & TEP_FIELD_IS_ARRAY) {
304 offset = field->offset;
305 len = field->size;
306 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
307 val = tep_read_number(pevent, data + offset, len);
308 offset = val;
309 len = offset >> 16;
310 offset &= 0xffff;
311 if (tep_field_is_relative(field->flags))
312 offset += field->offset + field->size;
313 }
314 if (field->flags & TEP_FIELD_IS_STRING &&
315 is_printable_array(data + offset, len)) {
316 ret = PyUnicode_FromString((char *)data + offset);
317 } else {
318 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
319 field->flags &= ~TEP_FIELD_IS_STRING;
320 }
321 } else {
322 val = tep_read_number(pevent, data + field->offset,
323 field->size);
324 if (field->flags & TEP_FIELD_IS_POINTER)
325 ret = PyLong_FromUnsignedLong((unsigned long) val);
326 else if (field->flags & TEP_FIELD_IS_SIGNED)
327 ret = PyLong_FromLong((long) val);
328 else
329 ret = PyLong_FromUnsignedLong((unsigned long) val);
330 }
331
332 return ret;
333 }
334
335 static PyObject*
get_tracepoint_field(struct pyrf_event * pevent,PyObject * attr_name)336 get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
337 {
338 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
339 struct evsel *evsel = pevent->evsel;
340 struct tep_event *tp_format = evsel__tp_format(evsel);
341 struct tep_format_field *field;
342
343 if (IS_ERR_OR_NULL(tp_format))
344 return NULL;
345
346 field = tep_find_any_field(tp_format, str);
347 return field ? tracepoint_field(pevent, field) : NULL;
348 }
349 #endif /* HAVE_LIBTRACEEVENT */
350
351 static PyObject*
pyrf_sample_event__getattro(struct pyrf_event * pevent,PyObject * attr_name)352 pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
353 {
354 PyObject *obj = NULL;
355
356 #ifdef HAVE_LIBTRACEEVENT
357 if (is_tracepoint(pevent))
358 obj = get_tracepoint_field(pevent, attr_name);
359 #endif
360
361 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
362 }
363
364 static PyTypeObject pyrf_sample_event__type = {
365 PyVarObject_HEAD_INIT(NULL, 0)
366 .tp_name = "perf.sample_event",
367 .tp_basicsize = sizeof(struct pyrf_event),
368 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
369 .tp_doc = pyrf_sample_event__doc,
370 .tp_members = pyrf_sample_event__members,
371 .tp_repr = (reprfunc)pyrf_sample_event__repr,
372 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
373 };
374
375 static const char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
376
377 static PyMemberDef pyrf_context_switch_event__members[] = {
378 sample_members
379 member_def(perf_event_header, type, T_UINT, "event type"),
380 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
381 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
382 { .name = NULL, },
383 };
384
pyrf_context_switch_event__repr(const struct pyrf_event * pevent)385 static PyObject *pyrf_context_switch_event__repr(const struct pyrf_event *pevent)
386 {
387 PyObject *ret;
388 char *s;
389
390 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
391 pevent->event.context_switch.next_prev_pid,
392 pevent->event.context_switch.next_prev_tid,
393 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
394 ret = PyErr_NoMemory();
395 } else {
396 ret = PyUnicode_FromString(s);
397 free(s);
398 }
399 return ret;
400 }
401
402 static PyTypeObject pyrf_context_switch_event__type = {
403 PyVarObject_HEAD_INIT(NULL, 0)
404 .tp_name = "perf.context_switch_event",
405 .tp_basicsize = sizeof(struct pyrf_event),
406 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
407 .tp_doc = pyrf_context_switch_event__doc,
408 .tp_members = pyrf_context_switch_event__members,
409 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
410 };
411
pyrf_event__setup_types(void)412 static int pyrf_event__setup_types(void)
413 {
414 int err;
415 pyrf_mmap_event__type.tp_new =
416 pyrf_task_event__type.tp_new =
417 pyrf_comm_event__type.tp_new =
418 pyrf_lost_event__type.tp_new =
419 pyrf_read_event__type.tp_new =
420 pyrf_sample_event__type.tp_new =
421 pyrf_context_switch_event__type.tp_new =
422 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
423
424 pyrf_sample_event__type.tp_dealloc = (destructor)pyrf_sample_event__delete,
425
426 err = PyType_Ready(&pyrf_mmap_event__type);
427 if (err < 0)
428 goto out;
429 err = PyType_Ready(&pyrf_lost_event__type);
430 if (err < 0)
431 goto out;
432 err = PyType_Ready(&pyrf_task_event__type);
433 if (err < 0)
434 goto out;
435 err = PyType_Ready(&pyrf_comm_event__type);
436 if (err < 0)
437 goto out;
438 err = PyType_Ready(&pyrf_throttle_event__type);
439 if (err < 0)
440 goto out;
441 err = PyType_Ready(&pyrf_read_event__type);
442 if (err < 0)
443 goto out;
444 err = PyType_Ready(&pyrf_sample_event__type);
445 if (err < 0)
446 goto out;
447 err = PyType_Ready(&pyrf_context_switch_event__type);
448 if (err < 0)
449 goto out;
450 out:
451 return err;
452 }
453
454 static PyTypeObject *pyrf_event__type[] = {
455 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
456 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
457 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
458 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
459 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
460 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
461 [PERF_RECORD_FORK] = &pyrf_task_event__type,
462 [PERF_RECORD_READ] = &pyrf_read_event__type,
463 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
464 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
465 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
466 };
467
pyrf_event__new(const union perf_event * event)468 static PyObject *pyrf_event__new(const union perf_event *event)
469 {
470 struct pyrf_event *pevent;
471 PyTypeObject *ptype;
472
473 if ((event->header.type < PERF_RECORD_MMAP ||
474 event->header.type > PERF_RECORD_SAMPLE) &&
475 !(event->header.type == PERF_RECORD_SWITCH ||
476 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
477 return NULL;
478
479 // FIXME this better be dynamic or we need to parse everything
480 // before calling perf_mmap__consume(), including tracepoint fields.
481 if (sizeof(pevent->event) < event->header.size)
482 return NULL;
483
484 ptype = pyrf_event__type[event->header.type];
485 pevent = PyObject_New(struct pyrf_event, ptype);
486 if (pevent != NULL)
487 memcpy(&pevent->event, event, event->header.size);
488 return (PyObject *)pevent;
489 }
490
491 struct pyrf_cpu_map {
492 PyObject_HEAD
493
494 struct perf_cpu_map *cpus;
495 };
496
pyrf_cpu_map__init(struct pyrf_cpu_map * pcpus,PyObject * args,PyObject * kwargs)497 static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
498 PyObject *args, PyObject *kwargs)
499 {
500 static char *kwlist[] = { "cpustr", NULL };
501 char *cpustr = NULL;
502
503 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
504 kwlist, &cpustr))
505 return -1;
506
507 pcpus->cpus = perf_cpu_map__new(cpustr);
508 if (pcpus->cpus == NULL)
509 return -1;
510 return 0;
511 }
512
pyrf_cpu_map__delete(struct pyrf_cpu_map * pcpus)513 static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
514 {
515 perf_cpu_map__put(pcpus->cpus);
516 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
517 }
518
pyrf_cpu_map__length(PyObject * obj)519 static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
520 {
521 struct pyrf_cpu_map *pcpus = (void *)obj;
522
523 return perf_cpu_map__nr(pcpus->cpus);
524 }
525
pyrf_cpu_map__item(PyObject * obj,Py_ssize_t i)526 static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
527 {
528 struct pyrf_cpu_map *pcpus = (void *)obj;
529
530 if (i >= perf_cpu_map__nr(pcpus->cpus))
531 return NULL;
532
533 return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
534 }
535
536 static PySequenceMethods pyrf_cpu_map__sequence_methods = {
537 .sq_length = pyrf_cpu_map__length,
538 .sq_item = pyrf_cpu_map__item,
539 };
540
541 static const char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
542
543 static PyTypeObject pyrf_cpu_map__type = {
544 PyVarObject_HEAD_INIT(NULL, 0)
545 .tp_name = "perf.cpu_map",
546 .tp_basicsize = sizeof(struct pyrf_cpu_map),
547 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
548 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
549 .tp_doc = pyrf_cpu_map__doc,
550 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
551 .tp_init = (initproc)pyrf_cpu_map__init,
552 };
553
pyrf_cpu_map__setup_types(void)554 static int pyrf_cpu_map__setup_types(void)
555 {
556 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
557 return PyType_Ready(&pyrf_cpu_map__type);
558 }
559
560 struct pyrf_thread_map {
561 PyObject_HEAD
562
563 struct perf_thread_map *threads;
564 };
565
pyrf_thread_map__init(struct pyrf_thread_map * pthreads,PyObject * args,PyObject * kwargs)566 static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
567 PyObject *args, PyObject *kwargs)
568 {
569 static char *kwlist[] = { "pid", "tid", "uid", NULL };
570 int pid = -1, tid = -1, uid = UINT_MAX;
571
572 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
573 kwlist, &pid, &tid, &uid))
574 return -1;
575
576 pthreads->threads = thread_map__new(pid, tid, uid);
577 if (pthreads->threads == NULL)
578 return -1;
579 return 0;
580 }
581
pyrf_thread_map__delete(struct pyrf_thread_map * pthreads)582 static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
583 {
584 perf_thread_map__put(pthreads->threads);
585 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
586 }
587
pyrf_thread_map__length(PyObject * obj)588 static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
589 {
590 struct pyrf_thread_map *pthreads = (void *)obj;
591
592 return perf_thread_map__nr(pthreads->threads);
593 }
594
pyrf_thread_map__item(PyObject * obj,Py_ssize_t i)595 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
596 {
597 struct pyrf_thread_map *pthreads = (void *)obj;
598
599 if (i >= perf_thread_map__nr(pthreads->threads))
600 return NULL;
601
602 return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
603 }
604
605 static PySequenceMethods pyrf_thread_map__sequence_methods = {
606 .sq_length = pyrf_thread_map__length,
607 .sq_item = pyrf_thread_map__item,
608 };
609
610 static const char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
611
612 static PyTypeObject pyrf_thread_map__type = {
613 PyVarObject_HEAD_INIT(NULL, 0)
614 .tp_name = "perf.thread_map",
615 .tp_basicsize = sizeof(struct pyrf_thread_map),
616 .tp_dealloc = (destructor)pyrf_thread_map__delete,
617 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
618 .tp_doc = pyrf_thread_map__doc,
619 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
620 .tp_init = (initproc)pyrf_thread_map__init,
621 };
622
pyrf_thread_map__setup_types(void)623 static int pyrf_thread_map__setup_types(void)
624 {
625 pyrf_thread_map__type.tp_new = PyType_GenericNew;
626 return PyType_Ready(&pyrf_thread_map__type);
627 }
628
629 struct pyrf_evsel {
630 PyObject_HEAD
631
632 struct evsel evsel;
633 };
634
pyrf_evsel__init(struct pyrf_evsel * pevsel,PyObject * args,PyObject * kwargs)635 static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
636 PyObject *args, PyObject *kwargs)
637 {
638 struct perf_event_attr attr = {
639 .type = PERF_TYPE_HARDWARE,
640 .config = PERF_COUNT_HW_CPU_CYCLES,
641 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
642 };
643 static char *kwlist[] = {
644 "type",
645 "config",
646 "sample_freq",
647 "sample_period",
648 "sample_type",
649 "read_format",
650 "disabled",
651 "inherit",
652 "pinned",
653 "exclusive",
654 "exclude_user",
655 "exclude_kernel",
656 "exclude_hv",
657 "exclude_idle",
658 "mmap",
659 "context_switch",
660 "comm",
661 "freq",
662 "inherit_stat",
663 "enable_on_exec",
664 "task",
665 "watermark",
666 "precise_ip",
667 "mmap_data",
668 "sample_id_all",
669 "wakeup_events",
670 "bp_type",
671 "bp_addr",
672 "bp_len",
673 NULL
674 };
675 u64 sample_period = 0;
676 u32 disabled = 0,
677 inherit = 0,
678 pinned = 0,
679 exclusive = 0,
680 exclude_user = 0,
681 exclude_kernel = 0,
682 exclude_hv = 0,
683 exclude_idle = 0,
684 mmap = 0,
685 context_switch = 0,
686 comm = 0,
687 freq = 1,
688 inherit_stat = 0,
689 enable_on_exec = 0,
690 task = 0,
691 watermark = 0,
692 precise_ip = 0,
693 mmap_data = 0,
694 sample_id_all = 1;
695 int idx = 0;
696
697 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
698 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
699 &attr.type, &attr.config, &attr.sample_freq,
700 &sample_period, &attr.sample_type,
701 &attr.read_format, &disabled, &inherit,
702 &pinned, &exclusive, &exclude_user,
703 &exclude_kernel, &exclude_hv, &exclude_idle,
704 &mmap, &context_switch, &comm, &freq, &inherit_stat,
705 &enable_on_exec, &task, &watermark,
706 &precise_ip, &mmap_data, &sample_id_all,
707 &attr.wakeup_events, &attr.bp_type,
708 &attr.bp_addr, &attr.bp_len, &idx))
709 return -1;
710
711 /* union... */
712 if (sample_period != 0) {
713 if (attr.sample_freq != 0)
714 return -1; /* FIXME: throw right exception */
715 attr.sample_period = sample_period;
716 }
717
718 /* Bitfields */
719 attr.disabled = disabled;
720 attr.inherit = inherit;
721 attr.pinned = pinned;
722 attr.exclusive = exclusive;
723 attr.exclude_user = exclude_user;
724 attr.exclude_kernel = exclude_kernel;
725 attr.exclude_hv = exclude_hv;
726 attr.exclude_idle = exclude_idle;
727 attr.mmap = mmap;
728 attr.context_switch = context_switch;
729 attr.comm = comm;
730 attr.freq = freq;
731 attr.inherit_stat = inherit_stat;
732 attr.enable_on_exec = enable_on_exec;
733 attr.task = task;
734 attr.watermark = watermark;
735 attr.precise_ip = precise_ip;
736 attr.mmap_data = mmap_data;
737 attr.sample_id_all = sample_id_all;
738 attr.size = sizeof(attr);
739
740 evsel__init(&pevsel->evsel, &attr, idx);
741 return 0;
742 }
743
pyrf_evsel__delete(struct pyrf_evsel * pevsel)744 static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
745 {
746 evsel__exit(&pevsel->evsel);
747 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
748 }
749
pyrf_evsel__open(struct pyrf_evsel * pevsel,PyObject * args,PyObject * kwargs)750 static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
751 PyObject *args, PyObject *kwargs)
752 {
753 struct evsel *evsel = &pevsel->evsel;
754 struct perf_cpu_map *cpus = NULL;
755 struct perf_thread_map *threads = NULL;
756 PyObject *pcpus = NULL, *pthreads = NULL;
757 int group = 0, inherit = 0;
758 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
759
760 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
761 &pcpus, &pthreads, &group, &inherit))
762 return NULL;
763
764 if (pthreads != NULL)
765 threads = ((struct pyrf_thread_map *)pthreads)->threads;
766
767 if (pcpus != NULL)
768 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
769
770 evsel->core.attr.inherit = inherit;
771 /*
772 * This will group just the fds for this single evsel, to group
773 * multiple events, use evlist.open().
774 */
775 if (evsel__open(evsel, cpus, threads) < 0) {
776 PyErr_SetFromErrno(PyExc_OSError);
777 return NULL;
778 }
779
780 Py_INCREF(Py_None);
781 return Py_None;
782 }
783
pyrf_evsel__str(PyObject * self)784 static PyObject *pyrf_evsel__str(PyObject *self)
785 {
786 struct pyrf_evsel *pevsel = (void *)self;
787 struct evsel *evsel = &pevsel->evsel;
788
789 if (!evsel->pmu)
790 return PyUnicode_FromFormat("evsel(%s)", evsel__name(evsel));
791
792 return PyUnicode_FromFormat("evsel(%s/%s/)", evsel->pmu->name, evsel__name(evsel));
793 }
794
795 static PyMethodDef pyrf_evsel__methods[] = {
796 {
797 .ml_name = "open",
798 .ml_meth = (PyCFunction)pyrf_evsel__open,
799 .ml_flags = METH_VARARGS | METH_KEYWORDS,
800 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
801 },
802 { .ml_name = NULL, }
803 };
804
805 #define evsel_member_def(member, ptype, help) \
806 { #member, ptype, \
807 offsetof(struct pyrf_evsel, evsel.member), \
808 0, help }
809
810 #define evsel_attr_member_def(member, ptype, help) \
811 { #member, ptype, \
812 offsetof(struct pyrf_evsel, evsel.core.attr.member), \
813 0, help }
814
815 static PyMemberDef pyrf_evsel__members[] = {
816 evsel_member_def(tracking, T_BOOL, "tracking event."),
817 evsel_attr_member_def(type, T_UINT, "attribute type."),
818 evsel_attr_member_def(size, T_UINT, "attribute size."),
819 evsel_attr_member_def(config, T_ULONGLONG, "attribute config."),
820 evsel_attr_member_def(sample_period, T_ULONGLONG, "attribute sample_period."),
821 evsel_attr_member_def(sample_type, T_ULONGLONG, "attribute sample_type."),
822 evsel_attr_member_def(read_format, T_ULONGLONG, "attribute read_format."),
823 evsel_attr_member_def(wakeup_events, T_UINT, "attribute wakeup_events."),
824 { .name = NULL, },
825 };
826
827 static const char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
828
829 static PyTypeObject pyrf_evsel__type = {
830 PyVarObject_HEAD_INIT(NULL, 0)
831 .tp_name = "perf.evsel",
832 .tp_basicsize = sizeof(struct pyrf_evsel),
833 .tp_dealloc = (destructor)pyrf_evsel__delete,
834 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
835 .tp_doc = pyrf_evsel__doc,
836 .tp_members = pyrf_evsel__members,
837 .tp_methods = pyrf_evsel__methods,
838 .tp_init = (initproc)pyrf_evsel__init,
839 .tp_str = pyrf_evsel__str,
840 .tp_repr = pyrf_evsel__str,
841 };
842
pyrf_evsel__setup_types(void)843 static int pyrf_evsel__setup_types(void)
844 {
845 pyrf_evsel__type.tp_new = PyType_GenericNew;
846 return PyType_Ready(&pyrf_evsel__type);
847 }
848
849 struct pyrf_evlist {
850 PyObject_HEAD
851
852 struct evlist evlist;
853 };
854
pyrf_evlist__init(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs __maybe_unused)855 static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
856 PyObject *args, PyObject *kwargs __maybe_unused)
857 {
858 PyObject *pcpus = NULL, *pthreads = NULL;
859 struct perf_cpu_map *cpus;
860 struct perf_thread_map *threads;
861
862 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
863 return -1;
864
865 threads = ((struct pyrf_thread_map *)pthreads)->threads;
866 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
867 evlist__init(&pevlist->evlist, cpus, threads);
868 return 0;
869 }
870
pyrf_evlist__delete(struct pyrf_evlist * pevlist)871 static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
872 {
873 evlist__exit(&pevlist->evlist);
874 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
875 }
876
pyrf_evlist__all_cpus(struct pyrf_evlist * pevlist)877 static PyObject *pyrf_evlist__all_cpus(struct pyrf_evlist *pevlist)
878 {
879 struct pyrf_cpu_map *pcpu_map = PyObject_New(struct pyrf_cpu_map, &pyrf_cpu_map__type);
880
881 if (pcpu_map)
882 pcpu_map->cpus = perf_cpu_map__get(pevlist->evlist.core.all_cpus);
883
884 return (PyObject *)pcpu_map;
885 }
886
pyrf_evlist__mmap(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs)887 static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
888 PyObject *args, PyObject *kwargs)
889 {
890 struct evlist *evlist = &pevlist->evlist;
891 static char *kwlist[] = { "pages", "overwrite", NULL };
892 int pages = 128, overwrite = false;
893
894 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
895 &pages, &overwrite))
896 return NULL;
897
898 if (evlist__mmap(evlist, pages) < 0) {
899 PyErr_SetFromErrno(PyExc_OSError);
900 return NULL;
901 }
902
903 Py_INCREF(Py_None);
904 return Py_None;
905 }
906
pyrf_evlist__poll(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs)907 static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
908 PyObject *args, PyObject *kwargs)
909 {
910 struct evlist *evlist = &pevlist->evlist;
911 static char *kwlist[] = { "timeout", NULL };
912 int timeout = -1, n;
913
914 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
915 return NULL;
916
917 n = evlist__poll(evlist, timeout);
918 if (n < 0) {
919 PyErr_SetFromErrno(PyExc_OSError);
920 return NULL;
921 }
922
923 return Py_BuildValue("i", n);
924 }
925
pyrf_evlist__get_pollfd(struct pyrf_evlist * pevlist,PyObject * args __maybe_unused,PyObject * kwargs __maybe_unused)926 static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
927 PyObject *args __maybe_unused,
928 PyObject *kwargs __maybe_unused)
929 {
930 struct evlist *evlist = &pevlist->evlist;
931 PyObject *list = PyList_New(0);
932 int i;
933
934 for (i = 0; i < evlist->core.pollfd.nr; ++i) {
935 PyObject *file;
936 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
937 NULL, NULL, NULL, 0);
938 if (file == NULL)
939 goto free_list;
940
941 if (PyList_Append(list, file) != 0) {
942 Py_DECREF(file);
943 goto free_list;
944 }
945
946 Py_DECREF(file);
947 }
948
949 return list;
950 free_list:
951 return PyErr_NoMemory();
952 }
953
954
pyrf_evlist__add(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs __maybe_unused)955 static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
956 PyObject *args,
957 PyObject *kwargs __maybe_unused)
958 {
959 struct evlist *evlist = &pevlist->evlist;
960 PyObject *pevsel;
961 struct evsel *evsel;
962
963 if (!PyArg_ParseTuple(args, "O", &pevsel))
964 return NULL;
965
966 Py_INCREF(pevsel);
967 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
968 evsel->core.idx = evlist->core.nr_entries;
969 evlist__add(evlist, evsel);
970
971 return Py_BuildValue("i", evlist->core.nr_entries);
972 }
973
get_md(struct evlist * evlist,int cpu)974 static struct mmap *get_md(struct evlist *evlist, int cpu)
975 {
976 int i;
977
978 for (i = 0; i < evlist->core.nr_mmaps; i++) {
979 struct mmap *md = &evlist->mmap[i];
980
981 if (md->core.cpu.cpu == cpu)
982 return md;
983 }
984
985 return NULL;
986 }
987
pyrf_evlist__read_on_cpu(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs)988 static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
989 PyObject *args, PyObject *kwargs)
990 {
991 struct evlist *evlist = &pevlist->evlist;
992 union perf_event *event;
993 int sample_id_all = 1, cpu;
994 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
995 struct mmap *md;
996 int err;
997
998 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
999 &cpu, &sample_id_all))
1000 return NULL;
1001
1002 md = get_md(evlist, cpu);
1003 if (!md)
1004 return NULL;
1005
1006 if (perf_mmap__read_init(&md->core) < 0)
1007 goto end;
1008
1009 event = perf_mmap__read_event(&md->core);
1010 if (event != NULL) {
1011 PyObject *pyevent = pyrf_event__new(event);
1012 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1013 struct evsel *evsel;
1014
1015 if (pyevent == NULL)
1016 return PyErr_NoMemory();
1017
1018 evsel = evlist__event2evsel(evlist, event);
1019 if (!evsel) {
1020 Py_DECREF(pyevent);
1021 Py_INCREF(Py_None);
1022 return Py_None;
1023 }
1024
1025 pevent->evsel = evsel;
1026
1027 perf_mmap__consume(&md->core);
1028
1029 err = evsel__parse_sample(evsel, &pevent->event, &pevent->sample);
1030 if (err) {
1031 Py_DECREF(pyevent);
1032 return PyErr_Format(PyExc_OSError,
1033 "perf: can't parse sample, err=%d", err);
1034 }
1035
1036 return pyevent;
1037 }
1038 end:
1039 Py_INCREF(Py_None);
1040 return Py_None;
1041 }
1042
pyrf_evlist__open(struct pyrf_evlist * pevlist,PyObject * args,PyObject * kwargs)1043 static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1044 PyObject *args, PyObject *kwargs)
1045 {
1046 struct evlist *evlist = &pevlist->evlist;
1047
1048 if (evlist__open(evlist) < 0) {
1049 PyErr_SetFromErrno(PyExc_OSError);
1050 return NULL;
1051 }
1052
1053 Py_INCREF(Py_None);
1054 return Py_None;
1055 }
1056
pyrf_evlist__config(struct pyrf_evlist * pevlist)1057 static PyObject *pyrf_evlist__config(struct pyrf_evlist *pevlist)
1058 {
1059 struct record_opts opts = {
1060 .sample_time = true,
1061 .mmap_pages = UINT_MAX,
1062 .user_freq = UINT_MAX,
1063 .user_interval = ULLONG_MAX,
1064 .freq = 4000,
1065 .target = {
1066 .uses_mmap = true,
1067 .default_per_cpu = true,
1068 },
1069 .nr_threads_synthesize = 1,
1070 .ctl_fd = -1,
1071 .ctl_fd_ack = -1,
1072 .no_buffering = true,
1073 .no_inherit = true,
1074 };
1075 struct evlist *evlist = &pevlist->evlist;
1076
1077 evlist__config(evlist, &opts, &callchain_param);
1078 Py_INCREF(Py_None);
1079 return Py_None;
1080 }
1081
pyrf_evlist__disable(struct pyrf_evlist * pevlist)1082 static PyObject *pyrf_evlist__disable(struct pyrf_evlist *pevlist)
1083 {
1084 evlist__disable(&pevlist->evlist);
1085 Py_INCREF(Py_None);
1086 return Py_None;
1087 }
1088
pyrf_evlist__enable(struct pyrf_evlist * pevlist)1089 static PyObject *pyrf_evlist__enable(struct pyrf_evlist *pevlist)
1090 {
1091 evlist__enable(&pevlist->evlist);
1092 Py_INCREF(Py_None);
1093 return Py_None;
1094 }
1095
1096 static PyMethodDef pyrf_evlist__methods[] = {
1097 {
1098 .ml_name = "all_cpus",
1099 .ml_meth = (PyCFunction)pyrf_evlist__all_cpus,
1100 .ml_flags = METH_NOARGS,
1101 .ml_doc = PyDoc_STR("CPU map union of all evsel CPU maps.")
1102 },
1103 {
1104 .ml_name = "mmap",
1105 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1106 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1107 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1108 },
1109 {
1110 .ml_name = "open",
1111 .ml_meth = (PyCFunction)pyrf_evlist__open,
1112 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1113 .ml_doc = PyDoc_STR("open the file descriptors.")
1114 },
1115 {
1116 .ml_name = "poll",
1117 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1118 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1119 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1120 },
1121 {
1122 .ml_name = "get_pollfd",
1123 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1124 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1125 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1126 },
1127 {
1128 .ml_name = "add",
1129 .ml_meth = (PyCFunction)pyrf_evlist__add,
1130 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1131 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1132 },
1133 {
1134 .ml_name = "read_on_cpu",
1135 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1136 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1137 .ml_doc = PyDoc_STR("reads an event.")
1138 },
1139 {
1140 .ml_name = "config",
1141 .ml_meth = (PyCFunction)pyrf_evlist__config,
1142 .ml_flags = METH_NOARGS,
1143 .ml_doc = PyDoc_STR("Apply default record options to the evlist.")
1144 },
1145 {
1146 .ml_name = "disable",
1147 .ml_meth = (PyCFunction)pyrf_evlist__disable,
1148 .ml_flags = METH_NOARGS,
1149 .ml_doc = PyDoc_STR("Disable the evsels in the evlist.")
1150 },
1151 {
1152 .ml_name = "enable",
1153 .ml_meth = (PyCFunction)pyrf_evlist__enable,
1154 .ml_flags = METH_NOARGS,
1155 .ml_doc = PyDoc_STR("Enable the evsels in the evlist.")
1156 },
1157 { .ml_name = NULL, }
1158 };
1159
pyrf_evlist__length(PyObject * obj)1160 static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1161 {
1162 struct pyrf_evlist *pevlist = (void *)obj;
1163
1164 return pevlist->evlist.core.nr_entries;
1165 }
1166
pyrf_evlist__item(PyObject * obj,Py_ssize_t i)1167 static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1168 {
1169 struct pyrf_evlist *pevlist = (void *)obj;
1170 struct evsel *pos;
1171
1172 if (i >= pevlist->evlist.core.nr_entries) {
1173 PyErr_SetString(PyExc_IndexError, "Index out of range");
1174 return NULL;
1175 }
1176
1177 evlist__for_each_entry(&pevlist->evlist, pos) {
1178 if (i-- == 0)
1179 break;
1180 }
1181
1182 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1183 }
1184
pyrf_evlist__str(PyObject * self)1185 static PyObject *pyrf_evlist__str(PyObject *self)
1186 {
1187 struct pyrf_evlist *pevlist = (void *)self;
1188 struct evsel *pos;
1189 struct strbuf sb = STRBUF_INIT;
1190 bool first = true;
1191 PyObject *result;
1192
1193 strbuf_addstr(&sb, "evlist([");
1194 evlist__for_each_entry(&pevlist->evlist, pos) {
1195 if (!first)
1196 strbuf_addch(&sb, ',');
1197 if (!pos->pmu)
1198 strbuf_addstr(&sb, evsel__name(pos));
1199 else
1200 strbuf_addf(&sb, "%s/%s/", pos->pmu->name, evsel__name(pos));
1201 first = false;
1202 }
1203 strbuf_addstr(&sb, "])");
1204 result = PyUnicode_FromString(sb.buf);
1205 strbuf_release(&sb);
1206 return result;
1207 }
1208
1209 static PySequenceMethods pyrf_evlist__sequence_methods = {
1210 .sq_length = pyrf_evlist__length,
1211 .sq_item = pyrf_evlist__item,
1212 };
1213
1214 static const char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1215
1216 static PyTypeObject pyrf_evlist__type = {
1217 PyVarObject_HEAD_INIT(NULL, 0)
1218 .tp_name = "perf.evlist",
1219 .tp_basicsize = sizeof(struct pyrf_evlist),
1220 .tp_dealloc = (destructor)pyrf_evlist__delete,
1221 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1222 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1223 .tp_doc = pyrf_evlist__doc,
1224 .tp_methods = pyrf_evlist__methods,
1225 .tp_init = (initproc)pyrf_evlist__init,
1226 .tp_repr = pyrf_evlist__str,
1227 .tp_str = pyrf_evlist__str,
1228 };
1229
pyrf_evlist__setup_types(void)1230 static int pyrf_evlist__setup_types(void)
1231 {
1232 pyrf_evlist__type.tp_new = PyType_GenericNew;
1233 return PyType_Ready(&pyrf_evlist__type);
1234 }
1235
1236 #define PERF_CONST(name) { #name, PERF_##name }
1237
1238 struct perf_constant {
1239 const char *name;
1240 int value;
1241 };
1242
1243 static const struct perf_constant perf__constants[] = {
1244 PERF_CONST(TYPE_HARDWARE),
1245 PERF_CONST(TYPE_SOFTWARE),
1246 PERF_CONST(TYPE_TRACEPOINT),
1247 PERF_CONST(TYPE_HW_CACHE),
1248 PERF_CONST(TYPE_RAW),
1249 PERF_CONST(TYPE_BREAKPOINT),
1250
1251 PERF_CONST(COUNT_HW_CPU_CYCLES),
1252 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1253 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1254 PERF_CONST(COUNT_HW_CACHE_MISSES),
1255 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1256 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1257 PERF_CONST(COUNT_HW_BUS_CYCLES),
1258 PERF_CONST(COUNT_HW_CACHE_L1D),
1259 PERF_CONST(COUNT_HW_CACHE_L1I),
1260 PERF_CONST(COUNT_HW_CACHE_LL),
1261 PERF_CONST(COUNT_HW_CACHE_DTLB),
1262 PERF_CONST(COUNT_HW_CACHE_ITLB),
1263 PERF_CONST(COUNT_HW_CACHE_BPU),
1264 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1265 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1266 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1267 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1268 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1269
1270 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1271 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1272
1273 PERF_CONST(COUNT_SW_CPU_CLOCK),
1274 PERF_CONST(COUNT_SW_TASK_CLOCK),
1275 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1276 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1277 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1278 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1279 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1280 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1281 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1282 PERF_CONST(COUNT_SW_DUMMY),
1283
1284 PERF_CONST(SAMPLE_IP),
1285 PERF_CONST(SAMPLE_TID),
1286 PERF_CONST(SAMPLE_TIME),
1287 PERF_CONST(SAMPLE_ADDR),
1288 PERF_CONST(SAMPLE_READ),
1289 PERF_CONST(SAMPLE_CALLCHAIN),
1290 PERF_CONST(SAMPLE_ID),
1291 PERF_CONST(SAMPLE_CPU),
1292 PERF_CONST(SAMPLE_PERIOD),
1293 PERF_CONST(SAMPLE_STREAM_ID),
1294 PERF_CONST(SAMPLE_RAW),
1295
1296 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1297 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1298 PERF_CONST(FORMAT_ID),
1299 PERF_CONST(FORMAT_GROUP),
1300
1301 PERF_CONST(RECORD_MMAP),
1302 PERF_CONST(RECORD_LOST),
1303 PERF_CONST(RECORD_COMM),
1304 PERF_CONST(RECORD_EXIT),
1305 PERF_CONST(RECORD_THROTTLE),
1306 PERF_CONST(RECORD_UNTHROTTLE),
1307 PERF_CONST(RECORD_FORK),
1308 PERF_CONST(RECORD_READ),
1309 PERF_CONST(RECORD_SAMPLE),
1310 PERF_CONST(RECORD_MMAP2),
1311 PERF_CONST(RECORD_AUX),
1312 PERF_CONST(RECORD_ITRACE_START),
1313 PERF_CONST(RECORD_LOST_SAMPLES),
1314 PERF_CONST(RECORD_SWITCH),
1315 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1316
1317 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1318 { .name = NULL, },
1319 };
1320
pyrf__tracepoint(struct pyrf_evsel * pevsel,PyObject * args,PyObject * kwargs)1321 static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1322 PyObject *args, PyObject *kwargs)
1323 {
1324 #ifndef HAVE_LIBTRACEEVENT
1325 return NULL;
1326 #else
1327 struct tep_event *tp_format;
1328 static char *kwlist[] = { "sys", "name", NULL };
1329 char *sys = NULL;
1330 char *name = NULL;
1331
1332 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1333 &sys, &name))
1334 return NULL;
1335
1336 tp_format = trace_event__tp_format(sys, name);
1337 if (IS_ERR(tp_format))
1338 return PyLong_FromLong(-1);
1339
1340 return PyLong_FromLong(tp_format->id);
1341 #endif // HAVE_LIBTRACEEVENT
1342 }
1343
pyrf_evsel__from_evsel(struct evsel * evsel)1344 static PyObject *pyrf_evsel__from_evsel(struct evsel *evsel)
1345 {
1346 struct pyrf_evsel *pevsel = PyObject_New(struct pyrf_evsel, &pyrf_evsel__type);
1347
1348 if (!pevsel)
1349 return NULL;
1350
1351 memset(&pevsel->evsel, 0, sizeof(pevsel->evsel));
1352 evsel__init(&pevsel->evsel, &evsel->core.attr, evsel->core.idx);
1353
1354 evsel__clone(&pevsel->evsel, evsel);
1355 if (evsel__is_group_leader(evsel))
1356 evsel__set_leader(&pevsel->evsel, &pevsel->evsel);
1357 return (PyObject *)pevsel;
1358 }
1359
pyrf_evlist__from_evlist(struct evlist * evlist)1360 static PyObject *pyrf_evlist__from_evlist(struct evlist *evlist)
1361 {
1362 struct pyrf_evlist *pevlist = PyObject_New(struct pyrf_evlist, &pyrf_evlist__type);
1363 struct evsel *pos;
1364
1365 if (!pevlist)
1366 return NULL;
1367
1368 memset(&pevlist->evlist, 0, sizeof(pevlist->evlist));
1369 evlist__init(&pevlist->evlist, evlist->core.all_cpus, evlist->core.threads);
1370 evlist__for_each_entry(evlist, pos) {
1371 struct pyrf_evsel *pevsel = (void *)pyrf_evsel__from_evsel(pos);
1372
1373 evlist__add(&pevlist->evlist, &pevsel->evsel);
1374 }
1375 return (PyObject *)pevlist;
1376 }
1377
pyrf__parse_events(PyObject * self,PyObject * args)1378 static PyObject *pyrf__parse_events(PyObject *self, PyObject *args)
1379 {
1380 const char *input;
1381 struct evlist evlist = {};
1382 struct parse_events_error err;
1383 PyObject *result;
1384 PyObject *pcpus = NULL, *pthreads = NULL;
1385 struct perf_cpu_map *cpus;
1386 struct perf_thread_map *threads;
1387
1388 if (!PyArg_ParseTuple(args, "s|OO", &input, &pcpus, &pthreads))
1389 return NULL;
1390
1391 threads = pthreads ? ((struct pyrf_thread_map *)pthreads)->threads : NULL;
1392 cpus = pcpus ? ((struct pyrf_cpu_map *)pcpus)->cpus : NULL;
1393
1394 parse_events_error__init(&err);
1395 evlist__init(&evlist, cpus, threads);
1396 if (parse_events(&evlist, input, &err)) {
1397 parse_events_error__print(&err, input);
1398 PyErr_SetFromErrno(PyExc_OSError);
1399 return NULL;
1400 }
1401 result = pyrf_evlist__from_evlist(&evlist);
1402 evlist__exit(&evlist);
1403 return result;
1404 }
1405
1406 static PyMethodDef perf__methods[] = {
1407 {
1408 .ml_name = "tracepoint",
1409 .ml_meth = (PyCFunction) pyrf__tracepoint,
1410 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1411 .ml_doc = PyDoc_STR("Get tracepoint config.")
1412 },
1413 {
1414 .ml_name = "parse_events",
1415 .ml_meth = (PyCFunction) pyrf__parse_events,
1416 .ml_flags = METH_VARARGS,
1417 .ml_doc = PyDoc_STR("Parse a string of events and return an evlist.")
1418 },
1419 { .ml_name = NULL, }
1420 };
1421
PyInit_perf(void)1422 PyMODINIT_FUNC PyInit_perf(void)
1423 {
1424 PyObject *obj;
1425 int i;
1426 PyObject *dict;
1427 static struct PyModuleDef moduledef = {
1428 PyModuleDef_HEAD_INIT,
1429 "perf", /* m_name */
1430 "", /* m_doc */
1431 -1, /* m_size */
1432 perf__methods, /* m_methods */
1433 NULL, /* m_reload */
1434 NULL, /* m_traverse */
1435 NULL, /* m_clear */
1436 NULL, /* m_free */
1437 };
1438 PyObject *module = PyModule_Create(&moduledef);
1439
1440 if (module == NULL ||
1441 pyrf_event__setup_types() < 0 ||
1442 pyrf_evlist__setup_types() < 0 ||
1443 pyrf_evsel__setup_types() < 0 ||
1444 pyrf_thread_map__setup_types() < 0 ||
1445 pyrf_cpu_map__setup_types() < 0)
1446 return module;
1447
1448 /* The page_size is placed in util object. */
1449 page_size = sysconf(_SC_PAGE_SIZE);
1450
1451 Py_INCREF(&pyrf_evlist__type);
1452 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1453
1454 Py_INCREF(&pyrf_evsel__type);
1455 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1456
1457 Py_INCREF(&pyrf_mmap_event__type);
1458 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1459
1460 Py_INCREF(&pyrf_lost_event__type);
1461 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1462
1463 Py_INCREF(&pyrf_comm_event__type);
1464 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1465
1466 Py_INCREF(&pyrf_task_event__type);
1467 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1468
1469 Py_INCREF(&pyrf_throttle_event__type);
1470 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1471
1472 Py_INCREF(&pyrf_task_event__type);
1473 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1474
1475 Py_INCREF(&pyrf_read_event__type);
1476 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1477
1478 Py_INCREF(&pyrf_sample_event__type);
1479 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1480
1481 Py_INCREF(&pyrf_context_switch_event__type);
1482 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1483
1484 Py_INCREF(&pyrf_thread_map__type);
1485 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1486
1487 Py_INCREF(&pyrf_cpu_map__type);
1488 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1489
1490 dict = PyModule_GetDict(module);
1491 if (dict == NULL)
1492 goto error;
1493
1494 for (i = 0; perf__constants[i].name != NULL; i++) {
1495 obj = PyLong_FromLong(perf__constants[i].value);
1496 if (obj == NULL)
1497 goto error;
1498 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1499 Py_DECREF(obj);
1500 }
1501
1502 error:
1503 if (PyErr_Occurred())
1504 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1505 return module;
1506 }
1507