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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#include <traceevent/event-parse.h>
9#include <perf/mmap.h>
10#include "evlist.h"
11#include "callchain.h"
12#include "evsel.h"
13#include "event.h"
14#include "print_binary.h"
15#include "thread_map.h"
16#include "trace-event.h"
17#include "mmap.h"
18#include "util/env.h"
19#include <internal/lib.h>
20#include "../perf-sys.h"
21
22#if PY_MAJOR_VERSION < 3
23#define _PyUnicode_FromString(arg) \
24 PyString_FromString(arg)
25#define _PyUnicode_AsString(arg) \
26 PyString_AsString(arg)
27#define _PyUnicode_FromFormat(...) \
28 PyString_FromFormat(__VA_ARGS__)
29#define _PyLong_FromLong(arg) \
30 PyInt_FromLong(arg)
31
32#else
33
34#define _PyUnicode_FromString(arg) \
35 PyUnicode_FromString(arg)
36#define _PyUnicode_FromFormat(...) \
37 PyUnicode_FromFormat(__VA_ARGS__)
38#define _PyLong_FromLong(arg) \
39 PyLong_FromLong(arg)
40#endif
41
42#ifndef Py_TYPE
43#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
44#endif
45
46/*
47 * Provide these two so that we don't have to link against callchain.c and
48 * start dragging hist.c, etc.
49 */
50struct callchain_param callchain_param;
51
52int parse_callchain_record(const char *arg __maybe_unused,
53 struct callchain_param *param __maybe_unused)
54{
55 return 0;
56}
57
58/*
59 * Add this one here not to drag util/env.c
60 */
61struct perf_env perf_env;
62
63/*
64 * Support debug printing even though util/debug.c is not linked. That means
65 * implementing 'verbose' and 'eprintf'.
66 */
67int verbose;
68int debug_peo_args;
69
70int eprintf(int level, int var, const char *fmt, ...);
71
72int eprintf(int level, int var, const char *fmt, ...)
73{
74 va_list args;
75 int ret = 0;
76
77 if (var >= level) {
78 va_start(args, fmt);
79 ret = vfprintf(stderr, fmt, args);
80 va_end(args);
81 }
82
83 return ret;
84}
85
86/* Define PyVarObject_HEAD_INIT for python 2.5 */
87#ifndef PyVarObject_HEAD_INIT
88# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
89#endif
90
91#if PY_MAJOR_VERSION < 3
92PyMODINIT_FUNC initperf(void);
93#else
94PyMODINIT_FUNC PyInit_perf(void);
95#endif
96
97#define member_def(type, member, ptype, help) \
98 { #member, ptype, \
99 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
100 0, help }
101
102#define sample_member_def(name, member, ptype, help) \
103 { #name, ptype, \
104 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
105 0, help }
106
107struct pyrf_event {
108 PyObject_HEAD
109 struct evsel *evsel;
110 struct perf_sample sample;
111 union perf_event event;
112};
113
114#define sample_members \
115 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
116 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
117 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
118 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
119 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
120 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
121 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
122 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
123 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
124
125static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
126
127static PyMemberDef pyrf_mmap_event__members[] = {
128 sample_members
129 member_def(perf_event_header, type, T_UINT, "event type"),
130 member_def(perf_event_header, misc, T_UINT, "event misc"),
131 member_def(perf_record_mmap, pid, T_UINT, "event pid"),
132 member_def(perf_record_mmap, tid, T_UINT, "event tid"),
133 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
134 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
135 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
136 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
137 { .name = NULL, },
138};
139
140static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
141{
142 PyObject *ret;
143 char *s;
144
145 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
146 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
147 "filename: %s }",
148 pevent->event.mmap.pid, pevent->event.mmap.tid,
149 pevent->event.mmap.start, pevent->event.mmap.len,
150 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
151 ret = PyErr_NoMemory();
152 } else {
153 ret = _PyUnicode_FromString(s);
154 free(s);
155 }
156 return ret;
157}
158
159static PyTypeObject pyrf_mmap_event__type = {
160 PyVarObject_HEAD_INIT(NULL, 0)
161 .tp_name = "perf.mmap_event",
162 .tp_basicsize = sizeof(struct pyrf_event),
163 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
164 .tp_doc = pyrf_mmap_event__doc,
165 .tp_members = pyrf_mmap_event__members,
166 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
167};
168
169static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
170
171static PyMemberDef pyrf_task_event__members[] = {
172 sample_members
173 member_def(perf_event_header, type, T_UINT, "event type"),
174 member_def(perf_record_fork, pid, T_UINT, "event pid"),
175 member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
176 member_def(perf_record_fork, tid, T_UINT, "event tid"),
177 member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
178 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
179 { .name = NULL, },
180};
181
182static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
183{
184 return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
185 "ptid: %u, time: %" PRI_lu64 "}",
186 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
187 pevent->event.fork.pid,
188 pevent->event.fork.ppid,
189 pevent->event.fork.tid,
190 pevent->event.fork.ptid,
191 pevent->event.fork.time);
192}
193
194static PyTypeObject pyrf_task_event__type = {
195 PyVarObject_HEAD_INIT(NULL, 0)
196 .tp_name = "perf.task_event",
197 .tp_basicsize = sizeof(struct pyrf_event),
198 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
199 .tp_doc = pyrf_task_event__doc,
200 .tp_members = pyrf_task_event__members,
201 .tp_repr = (reprfunc)pyrf_task_event__repr,
202};
203
204static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
205
206static PyMemberDef pyrf_comm_event__members[] = {
207 sample_members
208 member_def(perf_event_header, type, T_UINT, "event type"),
209 member_def(perf_record_comm, pid, T_UINT, "event pid"),
210 member_def(perf_record_comm, tid, T_UINT, "event tid"),
211 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
212 { .name = NULL, },
213};
214
215static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
216{
217 return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
218 pevent->event.comm.pid,
219 pevent->event.comm.tid,
220 pevent->event.comm.comm);
221}
222
223static PyTypeObject pyrf_comm_event__type = {
224 PyVarObject_HEAD_INIT(NULL, 0)
225 .tp_name = "perf.comm_event",
226 .tp_basicsize = sizeof(struct pyrf_event),
227 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
228 .tp_doc = pyrf_comm_event__doc,
229 .tp_members = pyrf_comm_event__members,
230 .tp_repr = (reprfunc)pyrf_comm_event__repr,
231};
232
233static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
234
235static PyMemberDef pyrf_throttle_event__members[] = {
236 sample_members
237 member_def(perf_event_header, type, T_UINT, "event type"),
238 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
239 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
240 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
241 { .name = NULL, },
242};
243
244static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
245{
246 struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
247
248 return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
249 ", stream_id: %" PRI_lu64 " }",
250 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
251 te->time, te->id, te->stream_id);
252}
253
254static PyTypeObject pyrf_throttle_event__type = {
255 PyVarObject_HEAD_INIT(NULL, 0)
256 .tp_name = "perf.throttle_event",
257 .tp_basicsize = sizeof(struct pyrf_event),
258 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
259 .tp_doc = pyrf_throttle_event__doc,
260 .tp_members = pyrf_throttle_event__members,
261 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
262};
263
264static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
265
266static PyMemberDef pyrf_lost_event__members[] = {
267 sample_members
268 member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
269 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
270 { .name = NULL, },
271};
272
273static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
274{
275 PyObject *ret;
276 char *s;
277
278 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
279 "lost: %#" PRI_lx64 " }",
280 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
281 ret = PyErr_NoMemory();
282 } else {
283 ret = _PyUnicode_FromString(s);
284 free(s);
285 }
286 return ret;
287}
288
289static PyTypeObject pyrf_lost_event__type = {
290 PyVarObject_HEAD_INIT(NULL, 0)
291 .tp_name = "perf.lost_event",
292 .tp_basicsize = sizeof(struct pyrf_event),
293 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
294 .tp_doc = pyrf_lost_event__doc,
295 .tp_members = pyrf_lost_event__members,
296 .tp_repr = (reprfunc)pyrf_lost_event__repr,
297};
298
299static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
300
301static PyMemberDef pyrf_read_event__members[] = {
302 sample_members
303 member_def(perf_record_read, pid, T_UINT, "event pid"),
304 member_def(perf_record_read, tid, T_UINT, "event tid"),
305 { .name = NULL, },
306};
307
308static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
309{
310 return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
311 pevent->event.read.pid,
312 pevent->event.read.tid);
313 /*
314 * FIXME: return the array of read values,
315 * making this method useful ;-)
316 */
317}
318
319static PyTypeObject pyrf_read_event__type = {
320 PyVarObject_HEAD_INIT(NULL, 0)
321 .tp_name = "perf.read_event",
322 .tp_basicsize = sizeof(struct pyrf_event),
323 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
324 .tp_doc = pyrf_read_event__doc,
325 .tp_members = pyrf_read_event__members,
326 .tp_repr = (reprfunc)pyrf_read_event__repr,
327};
328
329static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
330
331static PyMemberDef pyrf_sample_event__members[] = {
332 sample_members
333 member_def(perf_event_header, type, T_UINT, "event type"),
334 { .name = NULL, },
335};
336
337static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
338{
339 PyObject *ret;
340 char *s;
341
342 if (asprintf(&s, "{ type: sample }") < 0) {
343 ret = PyErr_NoMemory();
344 } else {
345 ret = _PyUnicode_FromString(s);
346 free(s);
347 }
348 return ret;
349}
350
351static bool is_tracepoint(struct pyrf_event *pevent)
352{
353 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
354}
355
356static PyObject*
357tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
358{
359 struct tep_handle *pevent = field->event->tep;
360 void *data = pe->sample.raw_data;
361 PyObject *ret = NULL;
362 unsigned long long val;
363 unsigned int offset, len;
364
365 if (field->flags & TEP_FIELD_IS_ARRAY) {
366 offset = field->offset;
367 len = field->size;
368 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
369 val = tep_read_number(pevent, data + offset, len);
370 offset = val;
371 len = offset >> 16;
372 offset &= 0xffff;
373 }
374 if (field->flags & TEP_FIELD_IS_STRING &&
375 is_printable_array(data + offset, len)) {
376 ret = _PyUnicode_FromString((char *)data + offset);
377 } else {
378 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
379 field->flags &= ~TEP_FIELD_IS_STRING;
380 }
381 } else {
382 val = tep_read_number(pevent, data + field->offset,
383 field->size);
384 if (field->flags & TEP_FIELD_IS_POINTER)
385 ret = PyLong_FromUnsignedLong((unsigned long) val);
386 else if (field->flags & TEP_FIELD_IS_SIGNED)
387 ret = PyLong_FromLong((long) val);
388 else
389 ret = PyLong_FromUnsignedLong((unsigned long) val);
390 }
391
392 return ret;
393}
394
395static PyObject*
396get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
397{
398 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
399 struct evsel *evsel = pevent->evsel;
400 struct tep_format_field *field;
401
402 if (!evsel->tp_format) {
403 struct tep_event *tp_format;
404
405 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
406 if (!tp_format)
407 return NULL;
408
409 evsel->tp_format = tp_format;
410 }
411
412 field = tep_find_any_field(evsel->tp_format, str);
413 if (!field)
414 return NULL;
415
416 return tracepoint_field(pevent, field);
417}
418
419static PyObject*
420pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
421{
422 PyObject *obj = NULL;
423
424 if (is_tracepoint(pevent))
425 obj = get_tracepoint_field(pevent, attr_name);
426
427 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
428}
429
430static PyTypeObject pyrf_sample_event__type = {
431 PyVarObject_HEAD_INIT(NULL, 0)
432 .tp_name = "perf.sample_event",
433 .tp_basicsize = sizeof(struct pyrf_event),
434 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
435 .tp_doc = pyrf_sample_event__doc,
436 .tp_members = pyrf_sample_event__members,
437 .tp_repr = (reprfunc)pyrf_sample_event__repr,
438 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
439};
440
441static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
442
443static PyMemberDef pyrf_context_switch_event__members[] = {
444 sample_members
445 member_def(perf_event_header, type, T_UINT, "event type"),
446 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
447 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
448 { .name = NULL, },
449};
450
451static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
452{
453 PyObject *ret;
454 char *s;
455
456 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
457 pevent->event.context_switch.next_prev_pid,
458 pevent->event.context_switch.next_prev_tid,
459 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
460 ret = PyErr_NoMemory();
461 } else {
462 ret = _PyUnicode_FromString(s);
463 free(s);
464 }
465 return ret;
466}
467
468static PyTypeObject pyrf_context_switch_event__type = {
469 PyVarObject_HEAD_INIT(NULL, 0)
470 .tp_name = "perf.context_switch_event",
471 .tp_basicsize = sizeof(struct pyrf_event),
472 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
473 .tp_doc = pyrf_context_switch_event__doc,
474 .tp_members = pyrf_context_switch_event__members,
475 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
476};
477
478static int pyrf_event__setup_types(void)
479{
480 int err;
481 pyrf_mmap_event__type.tp_new =
482 pyrf_task_event__type.tp_new =
483 pyrf_comm_event__type.tp_new =
484 pyrf_lost_event__type.tp_new =
485 pyrf_read_event__type.tp_new =
486 pyrf_sample_event__type.tp_new =
487 pyrf_context_switch_event__type.tp_new =
488 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
489 err = PyType_Ready(&pyrf_mmap_event__type);
490 if (err < 0)
491 goto out;
492 err = PyType_Ready(&pyrf_lost_event__type);
493 if (err < 0)
494 goto out;
495 err = PyType_Ready(&pyrf_task_event__type);
496 if (err < 0)
497 goto out;
498 err = PyType_Ready(&pyrf_comm_event__type);
499 if (err < 0)
500 goto out;
501 err = PyType_Ready(&pyrf_throttle_event__type);
502 if (err < 0)
503 goto out;
504 err = PyType_Ready(&pyrf_read_event__type);
505 if (err < 0)
506 goto out;
507 err = PyType_Ready(&pyrf_sample_event__type);
508 if (err < 0)
509 goto out;
510 err = PyType_Ready(&pyrf_context_switch_event__type);
511 if (err < 0)
512 goto out;
513out:
514 return err;
515}
516
517static PyTypeObject *pyrf_event__type[] = {
518 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
519 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
520 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
521 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
522 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
523 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
524 [PERF_RECORD_FORK] = &pyrf_task_event__type,
525 [PERF_RECORD_READ] = &pyrf_read_event__type,
526 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
527 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
528 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
529};
530
531static PyObject *pyrf_event__new(union perf_event *event)
532{
533 struct pyrf_event *pevent;
534 PyTypeObject *ptype;
535
536 if ((event->header.type < PERF_RECORD_MMAP ||
537 event->header.type > PERF_RECORD_SAMPLE) &&
538 !(event->header.type == PERF_RECORD_SWITCH ||
539 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
540 return NULL;
541
542 ptype = pyrf_event__type[event->header.type];
543 pevent = PyObject_New(struct pyrf_event, ptype);
544 if (pevent != NULL)
545 memcpy(&pevent->event, event, event->header.size);
546 return (PyObject *)pevent;
547}
548
549struct pyrf_cpu_map {
550 PyObject_HEAD
551
552 struct perf_cpu_map *cpus;
553};
554
555static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
556 PyObject *args, PyObject *kwargs)
557{
558 static char *kwlist[] = { "cpustr", NULL };
559 char *cpustr = NULL;
560
561 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
562 kwlist, &cpustr))
563 return -1;
564
565 pcpus->cpus = perf_cpu_map__new(cpustr);
566 if (pcpus->cpus == NULL)
567 return -1;
568 return 0;
569}
570
571static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
572{
573 perf_cpu_map__put(pcpus->cpus);
574 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
575}
576
577static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
578{
579 struct pyrf_cpu_map *pcpus = (void *)obj;
580
581 return pcpus->cpus->nr;
582}
583
584static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
585{
586 struct pyrf_cpu_map *pcpus = (void *)obj;
587
588 if (i >= pcpus->cpus->nr)
589 return NULL;
590
591 return Py_BuildValue("i", pcpus->cpus->map[i]);
592}
593
594static PySequenceMethods pyrf_cpu_map__sequence_methods = {
595 .sq_length = pyrf_cpu_map__length,
596 .sq_item = pyrf_cpu_map__item,
597};
598
599static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
600
601static PyTypeObject pyrf_cpu_map__type = {
602 PyVarObject_HEAD_INIT(NULL, 0)
603 .tp_name = "perf.cpu_map",
604 .tp_basicsize = sizeof(struct pyrf_cpu_map),
605 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
606 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
607 .tp_doc = pyrf_cpu_map__doc,
608 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
609 .tp_init = (initproc)pyrf_cpu_map__init,
610};
611
612static int pyrf_cpu_map__setup_types(void)
613{
614 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
615 return PyType_Ready(&pyrf_cpu_map__type);
616}
617
618struct pyrf_thread_map {
619 PyObject_HEAD
620
621 struct perf_thread_map *threads;
622};
623
624static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
625 PyObject *args, PyObject *kwargs)
626{
627 static char *kwlist[] = { "pid", "tid", "uid", NULL };
628 int pid = -1, tid = -1, uid = UINT_MAX;
629
630 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
631 kwlist, &pid, &tid, &uid))
632 return -1;
633
634 pthreads->threads = thread_map__new(pid, tid, uid);
635 if (pthreads->threads == NULL)
636 return -1;
637 return 0;
638}
639
640static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
641{
642 perf_thread_map__put(pthreads->threads);
643 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
644}
645
646static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
647{
648 struct pyrf_thread_map *pthreads = (void *)obj;
649
650 return pthreads->threads->nr;
651}
652
653static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
654{
655 struct pyrf_thread_map *pthreads = (void *)obj;
656
657 if (i >= pthreads->threads->nr)
658 return NULL;
659
660 return Py_BuildValue("i", pthreads->threads->map[i]);
661}
662
663static PySequenceMethods pyrf_thread_map__sequence_methods = {
664 .sq_length = pyrf_thread_map__length,
665 .sq_item = pyrf_thread_map__item,
666};
667
668static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
669
670static PyTypeObject pyrf_thread_map__type = {
671 PyVarObject_HEAD_INIT(NULL, 0)
672 .tp_name = "perf.thread_map",
673 .tp_basicsize = sizeof(struct pyrf_thread_map),
674 .tp_dealloc = (destructor)pyrf_thread_map__delete,
675 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
676 .tp_doc = pyrf_thread_map__doc,
677 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
678 .tp_init = (initproc)pyrf_thread_map__init,
679};
680
681static int pyrf_thread_map__setup_types(void)
682{
683 pyrf_thread_map__type.tp_new = PyType_GenericNew;
684 return PyType_Ready(&pyrf_thread_map__type);
685}
686
687struct pyrf_evsel {
688 PyObject_HEAD
689
690 struct evsel evsel;
691};
692
693static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
694 PyObject *args, PyObject *kwargs)
695{
696 struct perf_event_attr attr = {
697 .type = PERF_TYPE_HARDWARE,
698 .config = PERF_COUNT_HW_CPU_CYCLES,
699 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
700 };
701 static char *kwlist[] = {
702 "type",
703 "config",
704 "sample_freq",
705 "sample_period",
706 "sample_type",
707 "read_format",
708 "disabled",
709 "inherit",
710 "pinned",
711 "exclusive",
712 "exclude_user",
713 "exclude_kernel",
714 "exclude_hv",
715 "exclude_idle",
716 "mmap",
717 "context_switch",
718 "comm",
719 "freq",
720 "inherit_stat",
721 "enable_on_exec",
722 "task",
723 "watermark",
724 "precise_ip",
725 "mmap_data",
726 "sample_id_all",
727 "wakeup_events",
728 "bp_type",
729 "bp_addr",
730 "bp_len",
731 NULL
732 };
733 u64 sample_period = 0;
734 u32 disabled = 0,
735 inherit = 0,
736 pinned = 0,
737 exclusive = 0,
738 exclude_user = 0,
739 exclude_kernel = 0,
740 exclude_hv = 0,
741 exclude_idle = 0,
742 mmap = 0,
743 context_switch = 0,
744 comm = 0,
745 freq = 1,
746 inherit_stat = 0,
747 enable_on_exec = 0,
748 task = 0,
749 watermark = 0,
750 precise_ip = 0,
751 mmap_data = 0,
752 sample_id_all = 1;
753 int idx = 0;
754
755 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
756 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
757 &attr.type, &attr.config, &attr.sample_freq,
758 &sample_period, &attr.sample_type,
759 &attr.read_format, &disabled, &inherit,
760 &pinned, &exclusive, &exclude_user,
761 &exclude_kernel, &exclude_hv, &exclude_idle,
762 &mmap, &context_switch, &comm, &freq, &inherit_stat,
763 &enable_on_exec, &task, &watermark,
764 &precise_ip, &mmap_data, &sample_id_all,
765 &attr.wakeup_events, &attr.bp_type,
766 &attr.bp_addr, &attr.bp_len, &idx))
767 return -1;
768
769 /* union... */
770 if (sample_period != 0) {
771 if (attr.sample_freq != 0)
772 return -1; /* FIXME: throw right exception */
773 attr.sample_period = sample_period;
774 }
775
776 /* Bitfields */
777 attr.disabled = disabled;
778 attr.inherit = inherit;
779 attr.pinned = pinned;
780 attr.exclusive = exclusive;
781 attr.exclude_user = exclude_user;
782 attr.exclude_kernel = exclude_kernel;
783 attr.exclude_hv = exclude_hv;
784 attr.exclude_idle = exclude_idle;
785 attr.mmap = mmap;
786 attr.context_switch = context_switch;
787 attr.comm = comm;
788 attr.freq = freq;
789 attr.inherit_stat = inherit_stat;
790 attr.enable_on_exec = enable_on_exec;
791 attr.task = task;
792 attr.watermark = watermark;
793 attr.precise_ip = precise_ip;
794 attr.mmap_data = mmap_data;
795 attr.sample_id_all = sample_id_all;
796 attr.size = sizeof(attr);
797
798 evsel__init(&pevsel->evsel, &attr, idx);
799 return 0;
800}
801
802static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
803{
804 evsel__exit(&pevsel->evsel);
805 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
806}
807
808static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
809 PyObject *args, PyObject *kwargs)
810{
811 struct evsel *evsel = &pevsel->evsel;
812 struct perf_cpu_map *cpus = NULL;
813 struct perf_thread_map *threads = NULL;
814 PyObject *pcpus = NULL, *pthreads = NULL;
815 int group = 0, inherit = 0;
816 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
817
818 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
819 &pcpus, &pthreads, &group, &inherit))
820 return NULL;
821
822 if (pthreads != NULL)
823 threads = ((struct pyrf_thread_map *)pthreads)->threads;
824
825 if (pcpus != NULL)
826 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
827
828 evsel->core.attr.inherit = inherit;
829 /*
830 * This will group just the fds for this single evsel, to group
831 * multiple events, use evlist.open().
832 */
833 if (evsel__open(evsel, cpus, threads) < 0) {
834 PyErr_SetFromErrno(PyExc_OSError);
835 return NULL;
836 }
837
838 Py_INCREF(Py_None);
839 return Py_None;
840}
841
842static PyMethodDef pyrf_evsel__methods[] = {
843 {
844 .ml_name = "open",
845 .ml_meth = (PyCFunction)pyrf_evsel__open,
846 .ml_flags = METH_VARARGS | METH_KEYWORDS,
847 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
848 },
849 { .ml_name = NULL, }
850};
851
852static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
853
854static PyTypeObject pyrf_evsel__type = {
855 PyVarObject_HEAD_INIT(NULL, 0)
856 .tp_name = "perf.evsel",
857 .tp_basicsize = sizeof(struct pyrf_evsel),
858 .tp_dealloc = (destructor)pyrf_evsel__delete,
859 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
860 .tp_doc = pyrf_evsel__doc,
861 .tp_methods = pyrf_evsel__methods,
862 .tp_init = (initproc)pyrf_evsel__init,
863};
864
865static int pyrf_evsel__setup_types(void)
866{
867 pyrf_evsel__type.tp_new = PyType_GenericNew;
868 return PyType_Ready(&pyrf_evsel__type);
869}
870
871struct pyrf_evlist {
872 PyObject_HEAD
873
874 struct evlist evlist;
875};
876
877static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
878 PyObject *args, PyObject *kwargs __maybe_unused)
879{
880 PyObject *pcpus = NULL, *pthreads = NULL;
881 struct perf_cpu_map *cpus;
882 struct perf_thread_map *threads;
883
884 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
885 return -1;
886
887 threads = ((struct pyrf_thread_map *)pthreads)->threads;
888 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
889 evlist__init(&pevlist->evlist, cpus, threads);
890 return 0;
891}
892
893static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
894{
895 evlist__exit(&pevlist->evlist);
896 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
897}
898
899static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
900 PyObject *args, PyObject *kwargs)
901{
902 struct evlist *evlist = &pevlist->evlist;
903 static char *kwlist[] = { "pages", "overwrite", NULL };
904 int pages = 128, overwrite = false;
905
906 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
907 &pages, &overwrite))
908 return NULL;
909
910 if (evlist__mmap(evlist, pages) < 0) {
911 PyErr_SetFromErrno(PyExc_OSError);
912 return NULL;
913 }
914
915 Py_INCREF(Py_None);
916 return Py_None;
917}
918
919static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
920 PyObject *args, PyObject *kwargs)
921{
922 struct evlist *evlist = &pevlist->evlist;
923 static char *kwlist[] = { "timeout", NULL };
924 int timeout = -1, n;
925
926 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
927 return NULL;
928
929 n = evlist__poll(evlist, timeout);
930 if (n < 0) {
931 PyErr_SetFromErrno(PyExc_OSError);
932 return NULL;
933 }
934
935 return Py_BuildValue("i", n);
936}
937
938static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
939 PyObject *args __maybe_unused,
940 PyObject *kwargs __maybe_unused)
941{
942 struct evlist *evlist = &pevlist->evlist;
943 PyObject *list = PyList_New(0);
944 int i;
945
946 for (i = 0; i < evlist->core.pollfd.nr; ++i) {
947 PyObject *file;
948#if PY_MAJOR_VERSION < 3
949 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
950
951 if (fp == NULL)
952 goto free_list;
953
954 file = PyFile_FromFile(fp, "perf", "r", NULL);
955#else
956 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
957 NULL, NULL, NULL, 0);
958#endif
959 if (file == NULL)
960 goto free_list;
961
962 if (PyList_Append(list, file) != 0) {
963 Py_DECREF(file);
964 goto free_list;
965 }
966
967 Py_DECREF(file);
968 }
969
970 return list;
971free_list:
972 return PyErr_NoMemory();
973}
974
975
976static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
977 PyObject *args,
978 PyObject *kwargs __maybe_unused)
979{
980 struct evlist *evlist = &pevlist->evlist;
981 PyObject *pevsel;
982 struct evsel *evsel;
983
984 if (!PyArg_ParseTuple(args, "O", &pevsel))
985 return NULL;
986
987 Py_INCREF(pevsel);
988 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
989 evsel->idx = evlist->core.nr_entries;
990 evlist__add(evlist, evsel);
991
992 return Py_BuildValue("i", evlist->core.nr_entries);
993}
994
995static struct mmap *get_md(struct evlist *evlist, int cpu)
996{
997 int i;
998
999 for (i = 0; i < evlist->core.nr_mmaps; i++) {
1000 struct mmap *md = &evlist->mmap[i];
1001
1002 if (md->core.cpu == cpu)
1003 return md;
1004 }
1005
1006 return NULL;
1007}
1008
1009static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1010 PyObject *args, PyObject *kwargs)
1011{
1012 struct evlist *evlist = &pevlist->evlist;
1013 union perf_event *event;
1014 int sample_id_all = 1, cpu;
1015 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1016 struct mmap *md;
1017 int err;
1018
1019 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1020 &cpu, &sample_id_all))
1021 return NULL;
1022
1023 md = get_md(evlist, cpu);
1024 if (!md)
1025 return NULL;
1026
1027 if (perf_mmap__read_init(&md->core) < 0)
1028 goto end;
1029
1030 event = perf_mmap__read_event(&md->core);
1031 if (event != NULL) {
1032 PyObject *pyevent = pyrf_event__new(event);
1033 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1034 struct evsel *evsel;
1035
1036 if (pyevent == NULL)
1037 return PyErr_NoMemory();
1038
1039 evsel = perf_evlist__event2evsel(evlist, event);
1040 if (!evsel) {
1041 Py_INCREF(Py_None);
1042 return Py_None;
1043 }
1044
1045 pevent->evsel = evsel;
1046
1047 err = evsel__parse_sample(evsel, event, &pevent->sample);
1048
1049 /* Consume the even only after we parsed it out. */
1050 perf_mmap__consume(&md->core);
1051
1052 if (err)
1053 return PyErr_Format(PyExc_OSError,
1054 "perf: can't parse sample, err=%d", err);
1055 return pyevent;
1056 }
1057end:
1058 Py_INCREF(Py_None);
1059 return Py_None;
1060}
1061
1062static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1063 PyObject *args, PyObject *kwargs)
1064{
1065 struct evlist *evlist = &pevlist->evlist;
1066 int group = 0;
1067 static char *kwlist[] = { "group", NULL };
1068
1069 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
1070 return NULL;
1071
1072 if (group)
1073 perf_evlist__set_leader(evlist);
1074
1075 if (evlist__open(evlist) < 0) {
1076 PyErr_SetFromErrno(PyExc_OSError);
1077 return NULL;
1078 }
1079
1080 Py_INCREF(Py_None);
1081 return Py_None;
1082}
1083
1084static PyMethodDef pyrf_evlist__methods[] = {
1085 {
1086 .ml_name = "mmap",
1087 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1088 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1089 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1090 },
1091 {
1092 .ml_name = "open",
1093 .ml_meth = (PyCFunction)pyrf_evlist__open,
1094 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1095 .ml_doc = PyDoc_STR("open the file descriptors.")
1096 },
1097 {
1098 .ml_name = "poll",
1099 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1100 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1101 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1102 },
1103 {
1104 .ml_name = "get_pollfd",
1105 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1106 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1107 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1108 },
1109 {
1110 .ml_name = "add",
1111 .ml_meth = (PyCFunction)pyrf_evlist__add,
1112 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1113 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1114 },
1115 {
1116 .ml_name = "read_on_cpu",
1117 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1118 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1119 .ml_doc = PyDoc_STR("reads an event.")
1120 },
1121 { .ml_name = NULL, }
1122};
1123
1124static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1125{
1126 struct pyrf_evlist *pevlist = (void *)obj;
1127
1128 return pevlist->evlist.core.nr_entries;
1129}
1130
1131static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1132{
1133 struct pyrf_evlist *pevlist = (void *)obj;
1134 struct evsel *pos;
1135
1136 if (i >= pevlist->evlist.core.nr_entries)
1137 return NULL;
1138
1139 evlist__for_each_entry(&pevlist->evlist, pos) {
1140 if (i-- == 0)
1141 break;
1142 }
1143
1144 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1145}
1146
1147static PySequenceMethods pyrf_evlist__sequence_methods = {
1148 .sq_length = pyrf_evlist__length,
1149 .sq_item = pyrf_evlist__item,
1150};
1151
1152static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1153
1154static PyTypeObject pyrf_evlist__type = {
1155 PyVarObject_HEAD_INIT(NULL, 0)
1156 .tp_name = "perf.evlist",
1157 .tp_basicsize = sizeof(struct pyrf_evlist),
1158 .tp_dealloc = (destructor)pyrf_evlist__delete,
1159 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1160 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1161 .tp_doc = pyrf_evlist__doc,
1162 .tp_methods = pyrf_evlist__methods,
1163 .tp_init = (initproc)pyrf_evlist__init,
1164};
1165
1166static int pyrf_evlist__setup_types(void)
1167{
1168 pyrf_evlist__type.tp_new = PyType_GenericNew;
1169 return PyType_Ready(&pyrf_evlist__type);
1170}
1171
1172#define PERF_CONST(name) { #name, PERF_##name }
1173
1174static struct {
1175 const char *name;
1176 int value;
1177} perf__constants[] = {
1178 PERF_CONST(TYPE_HARDWARE),
1179 PERF_CONST(TYPE_SOFTWARE),
1180 PERF_CONST(TYPE_TRACEPOINT),
1181 PERF_CONST(TYPE_HW_CACHE),
1182 PERF_CONST(TYPE_RAW),
1183 PERF_CONST(TYPE_BREAKPOINT),
1184
1185 PERF_CONST(COUNT_HW_CPU_CYCLES),
1186 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1187 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1188 PERF_CONST(COUNT_HW_CACHE_MISSES),
1189 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1190 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1191 PERF_CONST(COUNT_HW_BUS_CYCLES),
1192 PERF_CONST(COUNT_HW_CACHE_L1D),
1193 PERF_CONST(COUNT_HW_CACHE_L1I),
1194 PERF_CONST(COUNT_HW_CACHE_LL),
1195 PERF_CONST(COUNT_HW_CACHE_DTLB),
1196 PERF_CONST(COUNT_HW_CACHE_ITLB),
1197 PERF_CONST(COUNT_HW_CACHE_BPU),
1198 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1199 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1200 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1201 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1202 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1203
1204 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1205 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1206
1207 PERF_CONST(COUNT_SW_CPU_CLOCK),
1208 PERF_CONST(COUNT_SW_TASK_CLOCK),
1209 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1210 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1211 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1212 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1213 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1214 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1215 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1216 PERF_CONST(COUNT_SW_DUMMY),
1217
1218 PERF_CONST(SAMPLE_IP),
1219 PERF_CONST(SAMPLE_TID),
1220 PERF_CONST(SAMPLE_TIME),
1221 PERF_CONST(SAMPLE_ADDR),
1222 PERF_CONST(SAMPLE_READ),
1223 PERF_CONST(SAMPLE_CALLCHAIN),
1224 PERF_CONST(SAMPLE_ID),
1225 PERF_CONST(SAMPLE_CPU),
1226 PERF_CONST(SAMPLE_PERIOD),
1227 PERF_CONST(SAMPLE_STREAM_ID),
1228 PERF_CONST(SAMPLE_RAW),
1229
1230 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1231 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1232 PERF_CONST(FORMAT_ID),
1233 PERF_CONST(FORMAT_GROUP),
1234
1235 PERF_CONST(RECORD_MMAP),
1236 PERF_CONST(RECORD_LOST),
1237 PERF_CONST(RECORD_COMM),
1238 PERF_CONST(RECORD_EXIT),
1239 PERF_CONST(RECORD_THROTTLE),
1240 PERF_CONST(RECORD_UNTHROTTLE),
1241 PERF_CONST(RECORD_FORK),
1242 PERF_CONST(RECORD_READ),
1243 PERF_CONST(RECORD_SAMPLE),
1244 PERF_CONST(RECORD_MMAP2),
1245 PERF_CONST(RECORD_AUX),
1246 PERF_CONST(RECORD_ITRACE_START),
1247 PERF_CONST(RECORD_LOST_SAMPLES),
1248 PERF_CONST(RECORD_SWITCH),
1249 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1250
1251 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1252 { .name = NULL, },
1253};
1254
1255static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1256 PyObject *args, PyObject *kwargs)
1257{
1258 struct tep_event *tp_format;
1259 static char *kwlist[] = { "sys", "name", NULL };
1260 char *sys = NULL;
1261 char *name = NULL;
1262
1263 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1264 &sys, &name))
1265 return NULL;
1266
1267 tp_format = trace_event__tp_format(sys, name);
1268 if (IS_ERR(tp_format))
1269 return _PyLong_FromLong(-1);
1270
1271 return _PyLong_FromLong(tp_format->id);
1272}
1273
1274static PyMethodDef perf__methods[] = {
1275 {
1276 .ml_name = "tracepoint",
1277 .ml_meth = (PyCFunction) pyrf__tracepoint,
1278 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1279 .ml_doc = PyDoc_STR("Get tracepoint config.")
1280 },
1281 { .ml_name = NULL, }
1282};
1283
1284#if PY_MAJOR_VERSION < 3
1285PyMODINIT_FUNC initperf(void)
1286#else
1287PyMODINIT_FUNC PyInit_perf(void)
1288#endif
1289{
1290 PyObject *obj;
1291 int i;
1292 PyObject *dict;
1293#if PY_MAJOR_VERSION < 3
1294 PyObject *module = Py_InitModule("perf", perf__methods);
1295#else
1296 static struct PyModuleDef moduledef = {
1297 PyModuleDef_HEAD_INIT,
1298 "perf", /* m_name */
1299 "", /* m_doc */
1300 -1, /* m_size */
1301 perf__methods, /* m_methods */
1302 NULL, /* m_reload */
1303 NULL, /* m_traverse */
1304 NULL, /* m_clear */
1305 NULL, /* m_free */
1306 };
1307 PyObject *module = PyModule_Create(&moduledef);
1308#endif
1309
1310 if (module == NULL ||
1311 pyrf_event__setup_types() < 0 ||
1312 pyrf_evlist__setup_types() < 0 ||
1313 pyrf_evsel__setup_types() < 0 ||
1314 pyrf_thread_map__setup_types() < 0 ||
1315 pyrf_cpu_map__setup_types() < 0)
1316#if PY_MAJOR_VERSION < 3
1317 return;
1318#else
1319 return module;
1320#endif
1321
1322 /* The page_size is placed in util object. */
1323 page_size = sysconf(_SC_PAGE_SIZE);
1324
1325 Py_INCREF(&pyrf_evlist__type);
1326 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1327
1328 Py_INCREF(&pyrf_evsel__type);
1329 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1330
1331 Py_INCREF(&pyrf_mmap_event__type);
1332 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1333
1334 Py_INCREF(&pyrf_lost_event__type);
1335 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1336
1337 Py_INCREF(&pyrf_comm_event__type);
1338 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1339
1340 Py_INCREF(&pyrf_task_event__type);
1341 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1342
1343 Py_INCREF(&pyrf_throttle_event__type);
1344 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1345
1346 Py_INCREF(&pyrf_task_event__type);
1347 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1348
1349 Py_INCREF(&pyrf_read_event__type);
1350 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1351
1352 Py_INCREF(&pyrf_sample_event__type);
1353 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1354
1355 Py_INCREF(&pyrf_context_switch_event__type);
1356 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1357
1358 Py_INCREF(&pyrf_thread_map__type);
1359 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1360
1361 Py_INCREF(&pyrf_cpu_map__type);
1362 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1363
1364 dict = PyModule_GetDict(module);
1365 if (dict == NULL)
1366 goto error;
1367
1368 for (i = 0; perf__constants[i].name != NULL; i++) {
1369 obj = _PyLong_FromLong(perf__constants[i].value);
1370 if (obj == NULL)
1371 goto error;
1372 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1373 Py_DECREF(obj);
1374 }
1375
1376error:
1377 if (PyErr_Occurred())
1378 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1379#if PY_MAJOR_VERSION >= 3
1380 return module;
1381#endif
1382}
1383
1384/*
1385 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1386 * binding.
1387 */
1388void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1389 int fd, int group_fd, unsigned long flags)
1390{
1391}
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 <traceevent/event-parse.h>
10#endif
11#include <perf/mmap.h>
12#include "evlist.h"
13#include "callchain.h"
14#include "evsel.h"
15#include "event.h"
16#include "print_binary.h"
17#include "thread_map.h"
18#include "trace-event.h"
19#include "mmap.h"
20#include "stat.h"
21#include "metricgroup.h"
22#include "util/bpf-filter.h"
23#include "util/env.h"
24#include "util/pmu.h"
25#include "util/pmus.h"
26#include <internal/lib.h>
27#include "util.h"
28
29#if PY_MAJOR_VERSION < 3
30#define _PyUnicode_FromString(arg) \
31 PyString_FromString(arg)
32#define _PyUnicode_AsString(arg) \
33 PyString_AsString(arg)
34#define _PyUnicode_FromFormat(...) \
35 PyString_FromFormat(__VA_ARGS__)
36#define _PyLong_FromLong(arg) \
37 PyInt_FromLong(arg)
38
39#else
40
41#define _PyUnicode_FromString(arg) \
42 PyUnicode_FromString(arg)
43#define _PyUnicode_FromFormat(...) \
44 PyUnicode_FromFormat(__VA_ARGS__)
45#define _PyLong_FromLong(arg) \
46 PyLong_FromLong(arg)
47#endif
48
49#ifndef Py_TYPE
50#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
51#endif
52
53/*
54 * Avoid bringing in event parsing.
55 */
56int parse_event(struct evlist *evlist __maybe_unused, const char *str __maybe_unused)
57{
58 return 0;
59}
60
61/*
62 * Provide these two so that we don't have to link against callchain.c and
63 * start dragging hist.c, etc.
64 */
65struct callchain_param callchain_param;
66
67int parse_callchain_record(const char *arg __maybe_unused,
68 struct callchain_param *param __maybe_unused)
69{
70 return 0;
71}
72
73/*
74 * Add these not to drag util/env.c
75 */
76struct perf_env perf_env;
77
78const char *perf_env__cpuid(struct perf_env *env __maybe_unused)
79{
80 return NULL;
81}
82
83// This one is a bit easier, wouldn't drag too much, but leave it as a stub we need it here
84const char *perf_env__arch(struct perf_env *env __maybe_unused)
85{
86 return NULL;
87}
88
89/*
90 * These ones are needed not to drag the PMU bandwagon, jevents generated
91 * pmu_sys_event_tables, etc and evsel__find_pmu() is used so far just for
92 * doing per PMU perf_event_attr.exclude_guest handling, not really needed, so
93 * far, for the perf python binding known usecases, revisit if this become
94 * necessary.
95 */
96struct perf_pmu *evsel__find_pmu(const struct evsel *evsel __maybe_unused)
97{
98 return NULL;
99}
100
101int perf_pmu__scan_file(const struct perf_pmu *pmu, const char *name, const char *fmt, ...)
102{
103 return EOF;
104}
105
106int perf_pmus__num_core_pmus(void)
107{
108 return 1;
109}
110
111bool evsel__is_aux_event(const struct evsel *evsel __maybe_unused)
112{
113 return false;
114}
115
116bool perf_pmus__supports_extended_type(void)
117{
118 return false;
119}
120
121/*
122 * Add this one here not to drag util/metricgroup.c
123 */
124int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
125 struct rblist *new_metric_events,
126 struct rblist *old_metric_events)
127{
128 return 0;
129}
130
131/*
132 * Add this one here not to drag util/trace-event-info.c
133 */
134char *tracepoint_id_to_name(u64 config)
135{
136 return NULL;
137}
138
139/*
140 * XXX: All these evsel destructors need some better mechanism, like a linked
141 * list of destructors registered when the relevant code indeed is used instead
142 * of having more and more calls in perf_evsel__delete(). -- acme
143 *
144 * For now, add some more:
145 *
146 * Not to drag the BPF bandwagon...
147 */
148void bpf_counter__destroy(struct evsel *evsel);
149int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
150int bpf_counter__disable(struct evsel *evsel);
151
152void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
153{
154}
155
156int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_unused, int fd __maybe_unused)
157{
158 return 0;
159}
160
161int bpf_counter__disable(struct evsel *evsel __maybe_unused)
162{
163 return 0;
164}
165
166// not to drag util/bpf-filter.c
167#ifdef HAVE_BPF_SKEL
168int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused)
169{
170 return 0;
171}
172
173int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
174{
175 return 0;
176}
177#endif
178
179/*
180 * Support debug printing even though util/debug.c is not linked. That means
181 * implementing 'verbose' and 'eprintf'.
182 */
183int verbose;
184int debug_peo_args;
185
186int eprintf(int level, int var, const char *fmt, ...);
187
188int eprintf(int level, int var, const char *fmt, ...)
189{
190 va_list args;
191 int ret = 0;
192
193 if (var >= level) {
194 va_start(args, fmt);
195 ret = vfprintf(stderr, fmt, args);
196 va_end(args);
197 }
198
199 return ret;
200}
201
202/* Define PyVarObject_HEAD_INIT for python 2.5 */
203#ifndef PyVarObject_HEAD_INIT
204# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
205#endif
206
207#if PY_MAJOR_VERSION < 3
208PyMODINIT_FUNC initperf(void);
209#else
210PyMODINIT_FUNC PyInit_perf(void);
211#endif
212
213#define member_def(type, member, ptype, help) \
214 { #member, ptype, \
215 offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
216 0, help }
217
218#define sample_member_def(name, member, ptype, help) \
219 { #name, ptype, \
220 offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
221 0, help }
222
223struct pyrf_event {
224 PyObject_HEAD
225 struct evsel *evsel;
226 struct perf_sample sample;
227 union perf_event event;
228};
229
230#define sample_members \
231 sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"), \
232 sample_member_def(sample_pid, pid, T_INT, "event pid"), \
233 sample_member_def(sample_tid, tid, T_INT, "event tid"), \
234 sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"), \
235 sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"), \
236 sample_member_def(sample_id, id, T_ULONGLONG, "event id"), \
237 sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
238 sample_member_def(sample_period, period, T_ULONGLONG, "event period"), \
239 sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
240
241static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
242
243static PyMemberDef pyrf_mmap_event__members[] = {
244 sample_members
245 member_def(perf_event_header, type, T_UINT, "event type"),
246 member_def(perf_event_header, misc, T_UINT, "event misc"),
247 member_def(perf_record_mmap, pid, T_UINT, "event pid"),
248 member_def(perf_record_mmap, tid, T_UINT, "event tid"),
249 member_def(perf_record_mmap, start, T_ULONGLONG, "start of the map"),
250 member_def(perf_record_mmap, len, T_ULONGLONG, "map length"),
251 member_def(perf_record_mmap, pgoff, T_ULONGLONG, "page offset"),
252 member_def(perf_record_mmap, filename, T_STRING_INPLACE, "backing store"),
253 { .name = NULL, },
254};
255
256static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
257{
258 PyObject *ret;
259 char *s;
260
261 if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
262 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
263 "filename: %s }",
264 pevent->event.mmap.pid, pevent->event.mmap.tid,
265 pevent->event.mmap.start, pevent->event.mmap.len,
266 pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
267 ret = PyErr_NoMemory();
268 } else {
269 ret = _PyUnicode_FromString(s);
270 free(s);
271 }
272 return ret;
273}
274
275static PyTypeObject pyrf_mmap_event__type = {
276 PyVarObject_HEAD_INIT(NULL, 0)
277 .tp_name = "perf.mmap_event",
278 .tp_basicsize = sizeof(struct pyrf_event),
279 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
280 .tp_doc = pyrf_mmap_event__doc,
281 .tp_members = pyrf_mmap_event__members,
282 .tp_repr = (reprfunc)pyrf_mmap_event__repr,
283};
284
285static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
286
287static PyMemberDef pyrf_task_event__members[] = {
288 sample_members
289 member_def(perf_event_header, type, T_UINT, "event type"),
290 member_def(perf_record_fork, pid, T_UINT, "event pid"),
291 member_def(perf_record_fork, ppid, T_UINT, "event ppid"),
292 member_def(perf_record_fork, tid, T_UINT, "event tid"),
293 member_def(perf_record_fork, ptid, T_UINT, "event ptid"),
294 member_def(perf_record_fork, time, T_ULONGLONG, "timestamp"),
295 { .name = NULL, },
296};
297
298static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
299{
300 return _PyUnicode_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
301 "ptid: %u, time: %" PRI_lu64 "}",
302 pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
303 pevent->event.fork.pid,
304 pevent->event.fork.ppid,
305 pevent->event.fork.tid,
306 pevent->event.fork.ptid,
307 pevent->event.fork.time);
308}
309
310static PyTypeObject pyrf_task_event__type = {
311 PyVarObject_HEAD_INIT(NULL, 0)
312 .tp_name = "perf.task_event",
313 .tp_basicsize = sizeof(struct pyrf_event),
314 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
315 .tp_doc = pyrf_task_event__doc,
316 .tp_members = pyrf_task_event__members,
317 .tp_repr = (reprfunc)pyrf_task_event__repr,
318};
319
320static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
321
322static PyMemberDef pyrf_comm_event__members[] = {
323 sample_members
324 member_def(perf_event_header, type, T_UINT, "event type"),
325 member_def(perf_record_comm, pid, T_UINT, "event pid"),
326 member_def(perf_record_comm, tid, T_UINT, "event tid"),
327 member_def(perf_record_comm, comm, T_STRING_INPLACE, "process name"),
328 { .name = NULL, },
329};
330
331static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
332{
333 return _PyUnicode_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
334 pevent->event.comm.pid,
335 pevent->event.comm.tid,
336 pevent->event.comm.comm);
337}
338
339static PyTypeObject pyrf_comm_event__type = {
340 PyVarObject_HEAD_INIT(NULL, 0)
341 .tp_name = "perf.comm_event",
342 .tp_basicsize = sizeof(struct pyrf_event),
343 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
344 .tp_doc = pyrf_comm_event__doc,
345 .tp_members = pyrf_comm_event__members,
346 .tp_repr = (reprfunc)pyrf_comm_event__repr,
347};
348
349static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
350
351static PyMemberDef pyrf_throttle_event__members[] = {
352 sample_members
353 member_def(perf_event_header, type, T_UINT, "event type"),
354 member_def(perf_record_throttle, time, T_ULONGLONG, "timestamp"),
355 member_def(perf_record_throttle, id, T_ULONGLONG, "event id"),
356 member_def(perf_record_throttle, stream_id, T_ULONGLONG, "event stream id"),
357 { .name = NULL, },
358};
359
360static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
361{
362 struct perf_record_throttle *te = (struct perf_record_throttle *)(&pevent->event.header + 1);
363
364 return _PyUnicode_FromFormat("{ type: %sthrottle, time: %" PRI_lu64 ", id: %" PRI_lu64
365 ", stream_id: %" PRI_lu64 " }",
366 pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
367 te->time, te->id, te->stream_id);
368}
369
370static PyTypeObject pyrf_throttle_event__type = {
371 PyVarObject_HEAD_INIT(NULL, 0)
372 .tp_name = "perf.throttle_event",
373 .tp_basicsize = sizeof(struct pyrf_event),
374 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
375 .tp_doc = pyrf_throttle_event__doc,
376 .tp_members = pyrf_throttle_event__members,
377 .tp_repr = (reprfunc)pyrf_throttle_event__repr,
378};
379
380static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
381
382static PyMemberDef pyrf_lost_event__members[] = {
383 sample_members
384 member_def(perf_record_lost, id, T_ULONGLONG, "event id"),
385 member_def(perf_record_lost, lost, T_ULONGLONG, "number of lost events"),
386 { .name = NULL, },
387};
388
389static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
390{
391 PyObject *ret;
392 char *s;
393
394 if (asprintf(&s, "{ type: lost, id: %#" PRI_lx64 ", "
395 "lost: %#" PRI_lx64 " }",
396 pevent->event.lost.id, pevent->event.lost.lost) < 0) {
397 ret = PyErr_NoMemory();
398 } else {
399 ret = _PyUnicode_FromString(s);
400 free(s);
401 }
402 return ret;
403}
404
405static PyTypeObject pyrf_lost_event__type = {
406 PyVarObject_HEAD_INIT(NULL, 0)
407 .tp_name = "perf.lost_event",
408 .tp_basicsize = sizeof(struct pyrf_event),
409 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
410 .tp_doc = pyrf_lost_event__doc,
411 .tp_members = pyrf_lost_event__members,
412 .tp_repr = (reprfunc)pyrf_lost_event__repr,
413};
414
415static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
416
417static PyMemberDef pyrf_read_event__members[] = {
418 sample_members
419 member_def(perf_record_read, pid, T_UINT, "event pid"),
420 member_def(perf_record_read, tid, T_UINT, "event tid"),
421 { .name = NULL, },
422};
423
424static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
425{
426 return _PyUnicode_FromFormat("{ type: read, pid: %u, tid: %u }",
427 pevent->event.read.pid,
428 pevent->event.read.tid);
429 /*
430 * FIXME: return the array of read values,
431 * making this method useful ;-)
432 */
433}
434
435static PyTypeObject pyrf_read_event__type = {
436 PyVarObject_HEAD_INIT(NULL, 0)
437 .tp_name = "perf.read_event",
438 .tp_basicsize = sizeof(struct pyrf_event),
439 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
440 .tp_doc = pyrf_read_event__doc,
441 .tp_members = pyrf_read_event__members,
442 .tp_repr = (reprfunc)pyrf_read_event__repr,
443};
444
445static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
446
447static PyMemberDef pyrf_sample_event__members[] = {
448 sample_members
449 member_def(perf_event_header, type, T_UINT, "event type"),
450 { .name = NULL, },
451};
452
453static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
454{
455 PyObject *ret;
456 char *s;
457
458 if (asprintf(&s, "{ type: sample }") < 0) {
459 ret = PyErr_NoMemory();
460 } else {
461 ret = _PyUnicode_FromString(s);
462 free(s);
463 }
464 return ret;
465}
466
467#ifdef HAVE_LIBTRACEEVENT
468static bool is_tracepoint(struct pyrf_event *pevent)
469{
470 return pevent->evsel->core.attr.type == PERF_TYPE_TRACEPOINT;
471}
472
473static PyObject*
474tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
475{
476 struct tep_handle *pevent = field->event->tep;
477 void *data = pe->sample.raw_data;
478 PyObject *ret = NULL;
479 unsigned long long val;
480 unsigned int offset, len;
481
482 if (field->flags & TEP_FIELD_IS_ARRAY) {
483 offset = field->offset;
484 len = field->size;
485 if (field->flags & TEP_FIELD_IS_DYNAMIC) {
486 val = tep_read_number(pevent, data + offset, len);
487 offset = val;
488 len = offset >> 16;
489 offset &= 0xffff;
490 if (tep_field_is_relative(field->flags))
491 offset += field->offset + field->size;
492 }
493 if (field->flags & TEP_FIELD_IS_STRING &&
494 is_printable_array(data + offset, len)) {
495 ret = _PyUnicode_FromString((char *)data + offset);
496 } else {
497 ret = PyByteArray_FromStringAndSize((const char *) data + offset, len);
498 field->flags &= ~TEP_FIELD_IS_STRING;
499 }
500 } else {
501 val = tep_read_number(pevent, data + field->offset,
502 field->size);
503 if (field->flags & TEP_FIELD_IS_POINTER)
504 ret = PyLong_FromUnsignedLong((unsigned long) val);
505 else if (field->flags & TEP_FIELD_IS_SIGNED)
506 ret = PyLong_FromLong((long) val);
507 else
508 ret = PyLong_FromUnsignedLong((unsigned long) val);
509 }
510
511 return ret;
512}
513
514static PyObject*
515get_tracepoint_field(struct pyrf_event *pevent, PyObject *attr_name)
516{
517 const char *str = _PyUnicode_AsString(PyObject_Str(attr_name));
518 struct evsel *evsel = pevent->evsel;
519 struct tep_format_field *field;
520
521 if (!evsel->tp_format) {
522 struct tep_event *tp_format;
523
524 tp_format = trace_event__tp_format_id(evsel->core.attr.config);
525 if (IS_ERR_OR_NULL(tp_format))
526 return NULL;
527
528 evsel->tp_format = tp_format;
529 }
530
531 field = tep_find_any_field(evsel->tp_format, str);
532 if (!field)
533 return NULL;
534
535 return tracepoint_field(pevent, field);
536}
537#endif /* HAVE_LIBTRACEEVENT */
538
539static PyObject*
540pyrf_sample_event__getattro(struct pyrf_event *pevent, PyObject *attr_name)
541{
542 PyObject *obj = NULL;
543
544#ifdef HAVE_LIBTRACEEVENT
545 if (is_tracepoint(pevent))
546 obj = get_tracepoint_field(pevent, attr_name);
547#endif
548
549 return obj ?: PyObject_GenericGetAttr((PyObject *) pevent, attr_name);
550}
551
552static PyTypeObject pyrf_sample_event__type = {
553 PyVarObject_HEAD_INIT(NULL, 0)
554 .tp_name = "perf.sample_event",
555 .tp_basicsize = sizeof(struct pyrf_event),
556 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
557 .tp_doc = pyrf_sample_event__doc,
558 .tp_members = pyrf_sample_event__members,
559 .tp_repr = (reprfunc)pyrf_sample_event__repr,
560 .tp_getattro = (getattrofunc) pyrf_sample_event__getattro,
561};
562
563static char pyrf_context_switch_event__doc[] = PyDoc_STR("perf context_switch event object.");
564
565static PyMemberDef pyrf_context_switch_event__members[] = {
566 sample_members
567 member_def(perf_event_header, type, T_UINT, "event type"),
568 member_def(perf_record_switch, next_prev_pid, T_UINT, "next/prev pid"),
569 member_def(perf_record_switch, next_prev_tid, T_UINT, "next/prev tid"),
570 { .name = NULL, },
571};
572
573static PyObject *pyrf_context_switch_event__repr(struct pyrf_event *pevent)
574{
575 PyObject *ret;
576 char *s;
577
578 if (asprintf(&s, "{ type: context_switch, next_prev_pid: %u, next_prev_tid: %u, switch_out: %u }",
579 pevent->event.context_switch.next_prev_pid,
580 pevent->event.context_switch.next_prev_tid,
581 !!(pevent->event.header.misc & PERF_RECORD_MISC_SWITCH_OUT)) < 0) {
582 ret = PyErr_NoMemory();
583 } else {
584 ret = _PyUnicode_FromString(s);
585 free(s);
586 }
587 return ret;
588}
589
590static PyTypeObject pyrf_context_switch_event__type = {
591 PyVarObject_HEAD_INIT(NULL, 0)
592 .tp_name = "perf.context_switch_event",
593 .tp_basicsize = sizeof(struct pyrf_event),
594 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
595 .tp_doc = pyrf_context_switch_event__doc,
596 .tp_members = pyrf_context_switch_event__members,
597 .tp_repr = (reprfunc)pyrf_context_switch_event__repr,
598};
599
600static int pyrf_event__setup_types(void)
601{
602 int err;
603 pyrf_mmap_event__type.tp_new =
604 pyrf_task_event__type.tp_new =
605 pyrf_comm_event__type.tp_new =
606 pyrf_lost_event__type.tp_new =
607 pyrf_read_event__type.tp_new =
608 pyrf_sample_event__type.tp_new =
609 pyrf_context_switch_event__type.tp_new =
610 pyrf_throttle_event__type.tp_new = PyType_GenericNew;
611 err = PyType_Ready(&pyrf_mmap_event__type);
612 if (err < 0)
613 goto out;
614 err = PyType_Ready(&pyrf_lost_event__type);
615 if (err < 0)
616 goto out;
617 err = PyType_Ready(&pyrf_task_event__type);
618 if (err < 0)
619 goto out;
620 err = PyType_Ready(&pyrf_comm_event__type);
621 if (err < 0)
622 goto out;
623 err = PyType_Ready(&pyrf_throttle_event__type);
624 if (err < 0)
625 goto out;
626 err = PyType_Ready(&pyrf_read_event__type);
627 if (err < 0)
628 goto out;
629 err = PyType_Ready(&pyrf_sample_event__type);
630 if (err < 0)
631 goto out;
632 err = PyType_Ready(&pyrf_context_switch_event__type);
633 if (err < 0)
634 goto out;
635out:
636 return err;
637}
638
639static PyTypeObject *pyrf_event__type[] = {
640 [PERF_RECORD_MMAP] = &pyrf_mmap_event__type,
641 [PERF_RECORD_LOST] = &pyrf_lost_event__type,
642 [PERF_RECORD_COMM] = &pyrf_comm_event__type,
643 [PERF_RECORD_EXIT] = &pyrf_task_event__type,
644 [PERF_RECORD_THROTTLE] = &pyrf_throttle_event__type,
645 [PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
646 [PERF_RECORD_FORK] = &pyrf_task_event__type,
647 [PERF_RECORD_READ] = &pyrf_read_event__type,
648 [PERF_RECORD_SAMPLE] = &pyrf_sample_event__type,
649 [PERF_RECORD_SWITCH] = &pyrf_context_switch_event__type,
650 [PERF_RECORD_SWITCH_CPU_WIDE] = &pyrf_context_switch_event__type,
651};
652
653static PyObject *pyrf_event__new(union perf_event *event)
654{
655 struct pyrf_event *pevent;
656 PyTypeObject *ptype;
657
658 if ((event->header.type < PERF_RECORD_MMAP ||
659 event->header.type > PERF_RECORD_SAMPLE) &&
660 !(event->header.type == PERF_RECORD_SWITCH ||
661 event->header.type == PERF_RECORD_SWITCH_CPU_WIDE))
662 return NULL;
663
664 ptype = pyrf_event__type[event->header.type];
665 pevent = PyObject_New(struct pyrf_event, ptype);
666 if (pevent != NULL)
667 memcpy(&pevent->event, event, event->header.size);
668 return (PyObject *)pevent;
669}
670
671struct pyrf_cpu_map {
672 PyObject_HEAD
673
674 struct perf_cpu_map *cpus;
675};
676
677static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
678 PyObject *args, PyObject *kwargs)
679{
680 static char *kwlist[] = { "cpustr", NULL };
681 char *cpustr = NULL;
682
683 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
684 kwlist, &cpustr))
685 return -1;
686
687 pcpus->cpus = perf_cpu_map__new(cpustr);
688 if (pcpus->cpus == NULL)
689 return -1;
690 return 0;
691}
692
693static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
694{
695 perf_cpu_map__put(pcpus->cpus);
696 Py_TYPE(pcpus)->tp_free((PyObject*)pcpus);
697}
698
699static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
700{
701 struct pyrf_cpu_map *pcpus = (void *)obj;
702
703 return perf_cpu_map__nr(pcpus->cpus);
704}
705
706static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
707{
708 struct pyrf_cpu_map *pcpus = (void *)obj;
709
710 if (i >= perf_cpu_map__nr(pcpus->cpus))
711 return NULL;
712
713 return Py_BuildValue("i", perf_cpu_map__cpu(pcpus->cpus, i).cpu);
714}
715
716static PySequenceMethods pyrf_cpu_map__sequence_methods = {
717 .sq_length = pyrf_cpu_map__length,
718 .sq_item = pyrf_cpu_map__item,
719};
720
721static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
722
723static PyTypeObject pyrf_cpu_map__type = {
724 PyVarObject_HEAD_INIT(NULL, 0)
725 .tp_name = "perf.cpu_map",
726 .tp_basicsize = sizeof(struct pyrf_cpu_map),
727 .tp_dealloc = (destructor)pyrf_cpu_map__delete,
728 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
729 .tp_doc = pyrf_cpu_map__doc,
730 .tp_as_sequence = &pyrf_cpu_map__sequence_methods,
731 .tp_init = (initproc)pyrf_cpu_map__init,
732};
733
734static int pyrf_cpu_map__setup_types(void)
735{
736 pyrf_cpu_map__type.tp_new = PyType_GenericNew;
737 return PyType_Ready(&pyrf_cpu_map__type);
738}
739
740struct pyrf_thread_map {
741 PyObject_HEAD
742
743 struct perf_thread_map *threads;
744};
745
746static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
747 PyObject *args, PyObject *kwargs)
748{
749 static char *kwlist[] = { "pid", "tid", "uid", NULL };
750 int pid = -1, tid = -1, uid = UINT_MAX;
751
752 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
753 kwlist, &pid, &tid, &uid))
754 return -1;
755
756 pthreads->threads = thread_map__new(pid, tid, uid);
757 if (pthreads->threads == NULL)
758 return -1;
759 return 0;
760}
761
762static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
763{
764 perf_thread_map__put(pthreads->threads);
765 Py_TYPE(pthreads)->tp_free((PyObject*)pthreads);
766}
767
768static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
769{
770 struct pyrf_thread_map *pthreads = (void *)obj;
771
772 return perf_thread_map__nr(pthreads->threads);
773}
774
775static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
776{
777 struct pyrf_thread_map *pthreads = (void *)obj;
778
779 if (i >= perf_thread_map__nr(pthreads->threads))
780 return NULL;
781
782 return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
783}
784
785static PySequenceMethods pyrf_thread_map__sequence_methods = {
786 .sq_length = pyrf_thread_map__length,
787 .sq_item = pyrf_thread_map__item,
788};
789
790static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
791
792static PyTypeObject pyrf_thread_map__type = {
793 PyVarObject_HEAD_INIT(NULL, 0)
794 .tp_name = "perf.thread_map",
795 .tp_basicsize = sizeof(struct pyrf_thread_map),
796 .tp_dealloc = (destructor)pyrf_thread_map__delete,
797 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
798 .tp_doc = pyrf_thread_map__doc,
799 .tp_as_sequence = &pyrf_thread_map__sequence_methods,
800 .tp_init = (initproc)pyrf_thread_map__init,
801};
802
803static int pyrf_thread_map__setup_types(void)
804{
805 pyrf_thread_map__type.tp_new = PyType_GenericNew;
806 return PyType_Ready(&pyrf_thread_map__type);
807}
808
809struct pyrf_evsel {
810 PyObject_HEAD
811
812 struct evsel evsel;
813};
814
815static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
816 PyObject *args, PyObject *kwargs)
817{
818 struct perf_event_attr attr = {
819 .type = PERF_TYPE_HARDWARE,
820 .config = PERF_COUNT_HW_CPU_CYCLES,
821 .sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
822 };
823 static char *kwlist[] = {
824 "type",
825 "config",
826 "sample_freq",
827 "sample_period",
828 "sample_type",
829 "read_format",
830 "disabled",
831 "inherit",
832 "pinned",
833 "exclusive",
834 "exclude_user",
835 "exclude_kernel",
836 "exclude_hv",
837 "exclude_idle",
838 "mmap",
839 "context_switch",
840 "comm",
841 "freq",
842 "inherit_stat",
843 "enable_on_exec",
844 "task",
845 "watermark",
846 "precise_ip",
847 "mmap_data",
848 "sample_id_all",
849 "wakeup_events",
850 "bp_type",
851 "bp_addr",
852 "bp_len",
853 NULL
854 };
855 u64 sample_period = 0;
856 u32 disabled = 0,
857 inherit = 0,
858 pinned = 0,
859 exclusive = 0,
860 exclude_user = 0,
861 exclude_kernel = 0,
862 exclude_hv = 0,
863 exclude_idle = 0,
864 mmap = 0,
865 context_switch = 0,
866 comm = 0,
867 freq = 1,
868 inherit_stat = 0,
869 enable_on_exec = 0,
870 task = 0,
871 watermark = 0,
872 precise_ip = 0,
873 mmap_data = 0,
874 sample_id_all = 1;
875 int idx = 0;
876
877 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
878 "|iKiKKiiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
879 &attr.type, &attr.config, &attr.sample_freq,
880 &sample_period, &attr.sample_type,
881 &attr.read_format, &disabled, &inherit,
882 &pinned, &exclusive, &exclude_user,
883 &exclude_kernel, &exclude_hv, &exclude_idle,
884 &mmap, &context_switch, &comm, &freq, &inherit_stat,
885 &enable_on_exec, &task, &watermark,
886 &precise_ip, &mmap_data, &sample_id_all,
887 &attr.wakeup_events, &attr.bp_type,
888 &attr.bp_addr, &attr.bp_len, &idx))
889 return -1;
890
891 /* union... */
892 if (sample_period != 0) {
893 if (attr.sample_freq != 0)
894 return -1; /* FIXME: throw right exception */
895 attr.sample_period = sample_period;
896 }
897
898 /* Bitfields */
899 attr.disabled = disabled;
900 attr.inherit = inherit;
901 attr.pinned = pinned;
902 attr.exclusive = exclusive;
903 attr.exclude_user = exclude_user;
904 attr.exclude_kernel = exclude_kernel;
905 attr.exclude_hv = exclude_hv;
906 attr.exclude_idle = exclude_idle;
907 attr.mmap = mmap;
908 attr.context_switch = context_switch;
909 attr.comm = comm;
910 attr.freq = freq;
911 attr.inherit_stat = inherit_stat;
912 attr.enable_on_exec = enable_on_exec;
913 attr.task = task;
914 attr.watermark = watermark;
915 attr.precise_ip = precise_ip;
916 attr.mmap_data = mmap_data;
917 attr.sample_id_all = sample_id_all;
918 attr.size = sizeof(attr);
919
920 evsel__init(&pevsel->evsel, &attr, idx);
921 return 0;
922}
923
924static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
925{
926 evsel__exit(&pevsel->evsel);
927 Py_TYPE(pevsel)->tp_free((PyObject*)pevsel);
928}
929
930static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
931 PyObject *args, PyObject *kwargs)
932{
933 struct evsel *evsel = &pevsel->evsel;
934 struct perf_cpu_map *cpus = NULL;
935 struct perf_thread_map *threads = NULL;
936 PyObject *pcpus = NULL, *pthreads = NULL;
937 int group = 0, inherit = 0;
938 static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
939
940 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
941 &pcpus, &pthreads, &group, &inherit))
942 return NULL;
943
944 if (pthreads != NULL)
945 threads = ((struct pyrf_thread_map *)pthreads)->threads;
946
947 if (pcpus != NULL)
948 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
949
950 evsel->core.attr.inherit = inherit;
951 /*
952 * This will group just the fds for this single evsel, to group
953 * multiple events, use evlist.open().
954 */
955 if (evsel__open(evsel, cpus, threads) < 0) {
956 PyErr_SetFromErrno(PyExc_OSError);
957 return NULL;
958 }
959
960 Py_INCREF(Py_None);
961 return Py_None;
962}
963
964static PyMethodDef pyrf_evsel__methods[] = {
965 {
966 .ml_name = "open",
967 .ml_meth = (PyCFunction)pyrf_evsel__open,
968 .ml_flags = METH_VARARGS | METH_KEYWORDS,
969 .ml_doc = PyDoc_STR("open the event selector file descriptor table.")
970 },
971 { .ml_name = NULL, }
972};
973
974static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
975
976static PyTypeObject pyrf_evsel__type = {
977 PyVarObject_HEAD_INIT(NULL, 0)
978 .tp_name = "perf.evsel",
979 .tp_basicsize = sizeof(struct pyrf_evsel),
980 .tp_dealloc = (destructor)pyrf_evsel__delete,
981 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
982 .tp_doc = pyrf_evsel__doc,
983 .tp_methods = pyrf_evsel__methods,
984 .tp_init = (initproc)pyrf_evsel__init,
985};
986
987static int pyrf_evsel__setup_types(void)
988{
989 pyrf_evsel__type.tp_new = PyType_GenericNew;
990 return PyType_Ready(&pyrf_evsel__type);
991}
992
993struct pyrf_evlist {
994 PyObject_HEAD
995
996 struct evlist evlist;
997};
998
999static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
1000 PyObject *args, PyObject *kwargs __maybe_unused)
1001{
1002 PyObject *pcpus = NULL, *pthreads = NULL;
1003 struct perf_cpu_map *cpus;
1004 struct perf_thread_map *threads;
1005
1006 if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
1007 return -1;
1008
1009 threads = ((struct pyrf_thread_map *)pthreads)->threads;
1010 cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
1011 evlist__init(&pevlist->evlist, cpus, threads);
1012 return 0;
1013}
1014
1015static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
1016{
1017 evlist__exit(&pevlist->evlist);
1018 Py_TYPE(pevlist)->tp_free((PyObject*)pevlist);
1019}
1020
1021static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
1022 PyObject *args, PyObject *kwargs)
1023{
1024 struct evlist *evlist = &pevlist->evlist;
1025 static char *kwlist[] = { "pages", "overwrite", NULL };
1026 int pages = 128, overwrite = false;
1027
1028 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
1029 &pages, &overwrite))
1030 return NULL;
1031
1032 if (evlist__mmap(evlist, pages) < 0) {
1033 PyErr_SetFromErrno(PyExc_OSError);
1034 return NULL;
1035 }
1036
1037 Py_INCREF(Py_None);
1038 return Py_None;
1039}
1040
1041static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
1042 PyObject *args, PyObject *kwargs)
1043{
1044 struct evlist *evlist = &pevlist->evlist;
1045 static char *kwlist[] = { "timeout", NULL };
1046 int timeout = -1, n;
1047
1048 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
1049 return NULL;
1050
1051 n = evlist__poll(evlist, timeout);
1052 if (n < 0) {
1053 PyErr_SetFromErrno(PyExc_OSError);
1054 return NULL;
1055 }
1056
1057 return Py_BuildValue("i", n);
1058}
1059
1060static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
1061 PyObject *args __maybe_unused,
1062 PyObject *kwargs __maybe_unused)
1063{
1064 struct evlist *evlist = &pevlist->evlist;
1065 PyObject *list = PyList_New(0);
1066 int i;
1067
1068 for (i = 0; i < evlist->core.pollfd.nr; ++i) {
1069 PyObject *file;
1070#if PY_MAJOR_VERSION < 3
1071 FILE *fp = fdopen(evlist->core.pollfd.entries[i].fd, "r");
1072
1073 if (fp == NULL)
1074 goto free_list;
1075
1076 file = PyFile_FromFile(fp, "perf", "r", NULL);
1077#else
1078 file = PyFile_FromFd(evlist->core.pollfd.entries[i].fd, "perf", "r", -1,
1079 NULL, NULL, NULL, 0);
1080#endif
1081 if (file == NULL)
1082 goto free_list;
1083
1084 if (PyList_Append(list, file) != 0) {
1085 Py_DECREF(file);
1086 goto free_list;
1087 }
1088
1089 Py_DECREF(file);
1090 }
1091
1092 return list;
1093free_list:
1094 return PyErr_NoMemory();
1095}
1096
1097
1098static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
1099 PyObject *args,
1100 PyObject *kwargs __maybe_unused)
1101{
1102 struct evlist *evlist = &pevlist->evlist;
1103 PyObject *pevsel;
1104 struct evsel *evsel;
1105
1106 if (!PyArg_ParseTuple(args, "O", &pevsel))
1107 return NULL;
1108
1109 Py_INCREF(pevsel);
1110 evsel = &((struct pyrf_evsel *)pevsel)->evsel;
1111 evsel->core.idx = evlist->core.nr_entries;
1112 evlist__add(evlist, evsel);
1113
1114 return Py_BuildValue("i", evlist->core.nr_entries);
1115}
1116
1117static struct mmap *get_md(struct evlist *evlist, int cpu)
1118{
1119 int i;
1120
1121 for (i = 0; i < evlist->core.nr_mmaps; i++) {
1122 struct mmap *md = &evlist->mmap[i];
1123
1124 if (md->core.cpu.cpu == cpu)
1125 return md;
1126 }
1127
1128 return NULL;
1129}
1130
1131static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
1132 PyObject *args, PyObject *kwargs)
1133{
1134 struct evlist *evlist = &pevlist->evlist;
1135 union perf_event *event;
1136 int sample_id_all = 1, cpu;
1137 static char *kwlist[] = { "cpu", "sample_id_all", NULL };
1138 struct mmap *md;
1139 int err;
1140
1141 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
1142 &cpu, &sample_id_all))
1143 return NULL;
1144
1145 md = get_md(evlist, cpu);
1146 if (!md)
1147 return NULL;
1148
1149 if (perf_mmap__read_init(&md->core) < 0)
1150 goto end;
1151
1152 event = perf_mmap__read_event(&md->core);
1153 if (event != NULL) {
1154 PyObject *pyevent = pyrf_event__new(event);
1155 struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
1156 struct evsel *evsel;
1157
1158 if (pyevent == NULL)
1159 return PyErr_NoMemory();
1160
1161 evsel = evlist__event2evsel(evlist, event);
1162 if (!evsel) {
1163 Py_INCREF(Py_None);
1164 return Py_None;
1165 }
1166
1167 pevent->evsel = evsel;
1168
1169 err = evsel__parse_sample(evsel, event, &pevent->sample);
1170
1171 /* Consume the even only after we parsed it out. */
1172 perf_mmap__consume(&md->core);
1173
1174 if (err)
1175 return PyErr_Format(PyExc_OSError,
1176 "perf: can't parse sample, err=%d", err);
1177 return pyevent;
1178 }
1179end:
1180 Py_INCREF(Py_None);
1181 return Py_None;
1182}
1183
1184static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
1185 PyObject *args, PyObject *kwargs)
1186{
1187 struct evlist *evlist = &pevlist->evlist;
1188
1189 if (evlist__open(evlist) < 0) {
1190 PyErr_SetFromErrno(PyExc_OSError);
1191 return NULL;
1192 }
1193
1194 Py_INCREF(Py_None);
1195 return Py_None;
1196}
1197
1198static PyMethodDef pyrf_evlist__methods[] = {
1199 {
1200 .ml_name = "mmap",
1201 .ml_meth = (PyCFunction)pyrf_evlist__mmap,
1202 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1203 .ml_doc = PyDoc_STR("mmap the file descriptor table.")
1204 },
1205 {
1206 .ml_name = "open",
1207 .ml_meth = (PyCFunction)pyrf_evlist__open,
1208 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1209 .ml_doc = PyDoc_STR("open the file descriptors.")
1210 },
1211 {
1212 .ml_name = "poll",
1213 .ml_meth = (PyCFunction)pyrf_evlist__poll,
1214 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1215 .ml_doc = PyDoc_STR("poll the file descriptor table.")
1216 },
1217 {
1218 .ml_name = "get_pollfd",
1219 .ml_meth = (PyCFunction)pyrf_evlist__get_pollfd,
1220 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1221 .ml_doc = PyDoc_STR("get the poll file descriptor table.")
1222 },
1223 {
1224 .ml_name = "add",
1225 .ml_meth = (PyCFunction)pyrf_evlist__add,
1226 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1227 .ml_doc = PyDoc_STR("adds an event selector to the list.")
1228 },
1229 {
1230 .ml_name = "read_on_cpu",
1231 .ml_meth = (PyCFunction)pyrf_evlist__read_on_cpu,
1232 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1233 .ml_doc = PyDoc_STR("reads an event.")
1234 },
1235 { .ml_name = NULL, }
1236};
1237
1238static Py_ssize_t pyrf_evlist__length(PyObject *obj)
1239{
1240 struct pyrf_evlist *pevlist = (void *)obj;
1241
1242 return pevlist->evlist.core.nr_entries;
1243}
1244
1245static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
1246{
1247 struct pyrf_evlist *pevlist = (void *)obj;
1248 struct evsel *pos;
1249
1250 if (i >= pevlist->evlist.core.nr_entries)
1251 return NULL;
1252
1253 evlist__for_each_entry(&pevlist->evlist, pos) {
1254 if (i-- == 0)
1255 break;
1256 }
1257
1258 return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
1259}
1260
1261static PySequenceMethods pyrf_evlist__sequence_methods = {
1262 .sq_length = pyrf_evlist__length,
1263 .sq_item = pyrf_evlist__item,
1264};
1265
1266static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
1267
1268static PyTypeObject pyrf_evlist__type = {
1269 PyVarObject_HEAD_INIT(NULL, 0)
1270 .tp_name = "perf.evlist",
1271 .tp_basicsize = sizeof(struct pyrf_evlist),
1272 .tp_dealloc = (destructor)pyrf_evlist__delete,
1273 .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
1274 .tp_as_sequence = &pyrf_evlist__sequence_methods,
1275 .tp_doc = pyrf_evlist__doc,
1276 .tp_methods = pyrf_evlist__methods,
1277 .tp_init = (initproc)pyrf_evlist__init,
1278};
1279
1280static int pyrf_evlist__setup_types(void)
1281{
1282 pyrf_evlist__type.tp_new = PyType_GenericNew;
1283 return PyType_Ready(&pyrf_evlist__type);
1284}
1285
1286#define PERF_CONST(name) { #name, PERF_##name }
1287
1288static struct {
1289 const char *name;
1290 int value;
1291} perf__constants[] = {
1292 PERF_CONST(TYPE_HARDWARE),
1293 PERF_CONST(TYPE_SOFTWARE),
1294 PERF_CONST(TYPE_TRACEPOINT),
1295 PERF_CONST(TYPE_HW_CACHE),
1296 PERF_CONST(TYPE_RAW),
1297 PERF_CONST(TYPE_BREAKPOINT),
1298
1299 PERF_CONST(COUNT_HW_CPU_CYCLES),
1300 PERF_CONST(COUNT_HW_INSTRUCTIONS),
1301 PERF_CONST(COUNT_HW_CACHE_REFERENCES),
1302 PERF_CONST(COUNT_HW_CACHE_MISSES),
1303 PERF_CONST(COUNT_HW_BRANCH_INSTRUCTIONS),
1304 PERF_CONST(COUNT_HW_BRANCH_MISSES),
1305 PERF_CONST(COUNT_HW_BUS_CYCLES),
1306 PERF_CONST(COUNT_HW_CACHE_L1D),
1307 PERF_CONST(COUNT_HW_CACHE_L1I),
1308 PERF_CONST(COUNT_HW_CACHE_LL),
1309 PERF_CONST(COUNT_HW_CACHE_DTLB),
1310 PERF_CONST(COUNT_HW_CACHE_ITLB),
1311 PERF_CONST(COUNT_HW_CACHE_BPU),
1312 PERF_CONST(COUNT_HW_CACHE_OP_READ),
1313 PERF_CONST(COUNT_HW_CACHE_OP_WRITE),
1314 PERF_CONST(COUNT_HW_CACHE_OP_PREFETCH),
1315 PERF_CONST(COUNT_HW_CACHE_RESULT_ACCESS),
1316 PERF_CONST(COUNT_HW_CACHE_RESULT_MISS),
1317
1318 PERF_CONST(COUNT_HW_STALLED_CYCLES_FRONTEND),
1319 PERF_CONST(COUNT_HW_STALLED_CYCLES_BACKEND),
1320
1321 PERF_CONST(COUNT_SW_CPU_CLOCK),
1322 PERF_CONST(COUNT_SW_TASK_CLOCK),
1323 PERF_CONST(COUNT_SW_PAGE_FAULTS),
1324 PERF_CONST(COUNT_SW_CONTEXT_SWITCHES),
1325 PERF_CONST(COUNT_SW_CPU_MIGRATIONS),
1326 PERF_CONST(COUNT_SW_PAGE_FAULTS_MIN),
1327 PERF_CONST(COUNT_SW_PAGE_FAULTS_MAJ),
1328 PERF_CONST(COUNT_SW_ALIGNMENT_FAULTS),
1329 PERF_CONST(COUNT_SW_EMULATION_FAULTS),
1330 PERF_CONST(COUNT_SW_DUMMY),
1331
1332 PERF_CONST(SAMPLE_IP),
1333 PERF_CONST(SAMPLE_TID),
1334 PERF_CONST(SAMPLE_TIME),
1335 PERF_CONST(SAMPLE_ADDR),
1336 PERF_CONST(SAMPLE_READ),
1337 PERF_CONST(SAMPLE_CALLCHAIN),
1338 PERF_CONST(SAMPLE_ID),
1339 PERF_CONST(SAMPLE_CPU),
1340 PERF_CONST(SAMPLE_PERIOD),
1341 PERF_CONST(SAMPLE_STREAM_ID),
1342 PERF_CONST(SAMPLE_RAW),
1343
1344 PERF_CONST(FORMAT_TOTAL_TIME_ENABLED),
1345 PERF_CONST(FORMAT_TOTAL_TIME_RUNNING),
1346 PERF_CONST(FORMAT_ID),
1347 PERF_CONST(FORMAT_GROUP),
1348
1349 PERF_CONST(RECORD_MMAP),
1350 PERF_CONST(RECORD_LOST),
1351 PERF_CONST(RECORD_COMM),
1352 PERF_CONST(RECORD_EXIT),
1353 PERF_CONST(RECORD_THROTTLE),
1354 PERF_CONST(RECORD_UNTHROTTLE),
1355 PERF_CONST(RECORD_FORK),
1356 PERF_CONST(RECORD_READ),
1357 PERF_CONST(RECORD_SAMPLE),
1358 PERF_CONST(RECORD_MMAP2),
1359 PERF_CONST(RECORD_AUX),
1360 PERF_CONST(RECORD_ITRACE_START),
1361 PERF_CONST(RECORD_LOST_SAMPLES),
1362 PERF_CONST(RECORD_SWITCH),
1363 PERF_CONST(RECORD_SWITCH_CPU_WIDE),
1364
1365 PERF_CONST(RECORD_MISC_SWITCH_OUT),
1366 { .name = NULL, },
1367};
1368
1369static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
1370 PyObject *args, PyObject *kwargs)
1371{
1372#ifndef HAVE_LIBTRACEEVENT
1373 return NULL;
1374#else
1375 struct tep_event *tp_format;
1376 static char *kwlist[] = { "sys", "name", NULL };
1377 char *sys = NULL;
1378 char *name = NULL;
1379
1380 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist,
1381 &sys, &name))
1382 return NULL;
1383
1384 tp_format = trace_event__tp_format(sys, name);
1385 if (IS_ERR(tp_format))
1386 return _PyLong_FromLong(-1);
1387
1388 return _PyLong_FromLong(tp_format->id);
1389#endif // HAVE_LIBTRACEEVENT
1390}
1391
1392static PyMethodDef perf__methods[] = {
1393 {
1394 .ml_name = "tracepoint",
1395 .ml_meth = (PyCFunction) pyrf__tracepoint,
1396 .ml_flags = METH_VARARGS | METH_KEYWORDS,
1397 .ml_doc = PyDoc_STR("Get tracepoint config.")
1398 },
1399 { .ml_name = NULL, }
1400};
1401
1402#if PY_MAJOR_VERSION < 3
1403PyMODINIT_FUNC initperf(void)
1404#else
1405PyMODINIT_FUNC PyInit_perf(void)
1406#endif
1407{
1408 PyObject *obj;
1409 int i;
1410 PyObject *dict;
1411#if PY_MAJOR_VERSION < 3
1412 PyObject *module = Py_InitModule("perf", perf__methods);
1413#else
1414 static struct PyModuleDef moduledef = {
1415 PyModuleDef_HEAD_INIT,
1416 "perf", /* m_name */
1417 "", /* m_doc */
1418 -1, /* m_size */
1419 perf__methods, /* m_methods */
1420 NULL, /* m_reload */
1421 NULL, /* m_traverse */
1422 NULL, /* m_clear */
1423 NULL, /* m_free */
1424 };
1425 PyObject *module = PyModule_Create(&moduledef);
1426#endif
1427
1428 if (module == NULL ||
1429 pyrf_event__setup_types() < 0 ||
1430 pyrf_evlist__setup_types() < 0 ||
1431 pyrf_evsel__setup_types() < 0 ||
1432 pyrf_thread_map__setup_types() < 0 ||
1433 pyrf_cpu_map__setup_types() < 0)
1434#if PY_MAJOR_VERSION < 3
1435 return;
1436#else
1437 return module;
1438#endif
1439
1440 /* The page_size is placed in util object. */
1441 page_size = sysconf(_SC_PAGE_SIZE);
1442
1443 Py_INCREF(&pyrf_evlist__type);
1444 PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1445
1446 Py_INCREF(&pyrf_evsel__type);
1447 PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1448
1449 Py_INCREF(&pyrf_mmap_event__type);
1450 PyModule_AddObject(module, "mmap_event", (PyObject *)&pyrf_mmap_event__type);
1451
1452 Py_INCREF(&pyrf_lost_event__type);
1453 PyModule_AddObject(module, "lost_event", (PyObject *)&pyrf_lost_event__type);
1454
1455 Py_INCREF(&pyrf_comm_event__type);
1456 PyModule_AddObject(module, "comm_event", (PyObject *)&pyrf_comm_event__type);
1457
1458 Py_INCREF(&pyrf_task_event__type);
1459 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1460
1461 Py_INCREF(&pyrf_throttle_event__type);
1462 PyModule_AddObject(module, "throttle_event", (PyObject *)&pyrf_throttle_event__type);
1463
1464 Py_INCREF(&pyrf_task_event__type);
1465 PyModule_AddObject(module, "task_event", (PyObject *)&pyrf_task_event__type);
1466
1467 Py_INCREF(&pyrf_read_event__type);
1468 PyModule_AddObject(module, "read_event", (PyObject *)&pyrf_read_event__type);
1469
1470 Py_INCREF(&pyrf_sample_event__type);
1471 PyModule_AddObject(module, "sample_event", (PyObject *)&pyrf_sample_event__type);
1472
1473 Py_INCREF(&pyrf_context_switch_event__type);
1474 PyModule_AddObject(module, "switch_event", (PyObject *)&pyrf_context_switch_event__type);
1475
1476 Py_INCREF(&pyrf_thread_map__type);
1477 PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1478
1479 Py_INCREF(&pyrf_cpu_map__type);
1480 PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1481
1482 dict = PyModule_GetDict(module);
1483 if (dict == NULL)
1484 goto error;
1485
1486 for (i = 0; perf__constants[i].name != NULL; i++) {
1487 obj = _PyLong_FromLong(perf__constants[i].value);
1488 if (obj == NULL)
1489 goto error;
1490 PyDict_SetItemString(dict, perf__constants[i].name, obj);
1491 Py_DECREF(obj);
1492 }
1493
1494error:
1495 if (PyErr_Occurred())
1496 PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1497#if PY_MAJOR_VERSION >= 3
1498 return module;
1499#endif
1500}
1501
1502/*
1503 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1504 * binding.
1505 */
1506void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu,
1507 int fd, int group_fd, unsigned long flags)
1508{
1509}
1510
1511void evlist__free_stats(struct evlist *evlist)
1512{
1513}