1#include <Python.h>
2#include <structmember.h>
3#include <inttypes.h>
4#include <poll.h>
5#include "evlist.h"
6#include "evsel.h"
7#include "event.h"
8#include "cpumap.h"
9#include "thread_map.h"
10
11/*
12 * Support debug printing even though util/debug.c is not linked.  That means
13 * implementing 'verbose' and 'eprintf'.
14 */
15int verbose;
16
17int eprintf(int level, int var, const char *fmt, ...)
18{
19	va_list args;
20	int ret = 0;
21
22	if (var >= level) {
23		va_start(args, fmt);
24		ret = vfprintf(stderr, fmt, args);
25		va_end(args);
26	}
27
28	return ret;
29}
30
31/* Define PyVarObject_HEAD_INIT for python 2.5 */
32#ifndef PyVarObject_HEAD_INIT
33# define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
34#endif
35
36PyMODINIT_FUNC initperf(void);
37
38#define member_def(type, member, ptype, help) \
39	{ #member, ptype, \
40	  offsetof(struct pyrf_event, event) + offsetof(struct type, member), \
41	  0, help }
42
43#define sample_member_def(name, member, ptype, help) \
44	{ #name, ptype, \
45	  offsetof(struct pyrf_event, sample) + offsetof(struct perf_sample, member), \
46	  0, help }
47
48struct pyrf_event {
49	PyObject_HEAD
50	struct perf_sample sample;
51	union perf_event   event;
52};
53
54#define sample_members \
55	sample_member_def(sample_ip, ip, T_ULONGLONG, "event type"),			 \
56	sample_member_def(sample_pid, pid, T_INT, "event pid"),			 \
57	sample_member_def(sample_tid, tid, T_INT, "event tid"),			 \
58	sample_member_def(sample_time, time, T_ULONGLONG, "event timestamp"),		 \
59	sample_member_def(sample_addr, addr, T_ULONGLONG, "event addr"),		 \
60	sample_member_def(sample_id, id, T_ULONGLONG, "event id"),			 \
61	sample_member_def(sample_stream_id, stream_id, T_ULONGLONG, "event stream id"), \
62	sample_member_def(sample_period, period, T_ULONGLONG, "event period"),		 \
63	sample_member_def(sample_cpu, cpu, T_UINT, "event cpu"),
64
65static char pyrf_mmap_event__doc[] = PyDoc_STR("perf mmap event object.");
66
67static PyMemberDef pyrf_mmap_event__members[] = {
68	sample_members
69	member_def(perf_event_header, type, T_UINT, "event type"),
70	member_def(mmap_event, pid, T_UINT, "event pid"),
71	member_def(mmap_event, tid, T_UINT, "event tid"),
72	member_def(mmap_event, start, T_ULONGLONG, "start of the map"),
73	member_def(mmap_event, len, T_ULONGLONG, "map length"),
74	member_def(mmap_event, pgoff, T_ULONGLONG, "page offset"),
75	member_def(mmap_event, filename, T_STRING_INPLACE, "backing store"),
76	{ .name = NULL, },
77};
78
79static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
80{
81	PyObject *ret;
82	char *s;
83
84	if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
85			 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
86			 "filename: %s }",
87		     pevent->event.mmap.pid, pevent->event.mmap.tid,
88		     pevent->event.mmap.start, pevent->event.mmap.len,
89		     pevent->event.mmap.pgoff, pevent->event.mmap.filename) < 0) {
90		ret = PyErr_NoMemory();
91	} else {
92		ret = PyString_FromString(s);
93		free(s);
94	}
95	return ret;
96}
97
98static PyTypeObject pyrf_mmap_event__type = {
99	PyVarObject_HEAD_INIT(NULL, 0)
100	.tp_name	= "perf.mmap_event",
101	.tp_basicsize	= sizeof(struct pyrf_event),
102	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
103	.tp_doc		= pyrf_mmap_event__doc,
104	.tp_members	= pyrf_mmap_event__members,
105	.tp_repr	= (reprfunc)pyrf_mmap_event__repr,
106};
107
108static char pyrf_task_event__doc[] = PyDoc_STR("perf task (fork/exit) event object.");
109
110static PyMemberDef pyrf_task_event__members[] = {
111	sample_members
112	member_def(perf_event_header, type, T_UINT, "event type"),
113	member_def(fork_event, pid, T_UINT, "event pid"),
114	member_def(fork_event, ppid, T_UINT, "event ppid"),
115	member_def(fork_event, tid, T_UINT, "event tid"),
116	member_def(fork_event, ptid, T_UINT, "event ptid"),
117	member_def(fork_event, time, T_ULONGLONG, "timestamp"),
118	{ .name = NULL, },
119};
120
121static PyObject *pyrf_task_event__repr(struct pyrf_event *pevent)
122{
123	return PyString_FromFormat("{ type: %s, pid: %u, ppid: %u, tid: %u, "
124				   "ptid: %u, time: %" PRIu64 "}",
125				   pevent->event.header.type == PERF_RECORD_FORK ? "fork" : "exit",
126				   pevent->event.fork.pid,
127				   pevent->event.fork.ppid,
128				   pevent->event.fork.tid,
129				   pevent->event.fork.ptid,
130				   pevent->event.fork.time);
131}
132
133static PyTypeObject pyrf_task_event__type = {
134	PyVarObject_HEAD_INIT(NULL, 0)
135	.tp_name	= "perf.task_event",
136	.tp_basicsize	= sizeof(struct pyrf_event),
137	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
138	.tp_doc		= pyrf_task_event__doc,
139	.tp_members	= pyrf_task_event__members,
140	.tp_repr	= (reprfunc)pyrf_task_event__repr,
141};
142
143static char pyrf_comm_event__doc[] = PyDoc_STR("perf comm event object.");
144
145static PyMemberDef pyrf_comm_event__members[] = {
146	sample_members
147	member_def(perf_event_header, type, T_UINT, "event type"),
148	member_def(comm_event, pid, T_UINT, "event pid"),
149	member_def(comm_event, tid, T_UINT, "event tid"),
150	member_def(comm_event, comm, T_STRING_INPLACE, "process name"),
151	{ .name = NULL, },
152};
153
154static PyObject *pyrf_comm_event__repr(struct pyrf_event *pevent)
155{
156	return PyString_FromFormat("{ type: comm, pid: %u, tid: %u, comm: %s }",
157				   pevent->event.comm.pid,
158				   pevent->event.comm.tid,
159				   pevent->event.comm.comm);
160}
161
162static PyTypeObject pyrf_comm_event__type = {
163	PyVarObject_HEAD_INIT(NULL, 0)
164	.tp_name	= "perf.comm_event",
165	.tp_basicsize	= sizeof(struct pyrf_event),
166	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
167	.tp_doc		= pyrf_comm_event__doc,
168	.tp_members	= pyrf_comm_event__members,
169	.tp_repr	= (reprfunc)pyrf_comm_event__repr,
170};
171
172static char pyrf_throttle_event__doc[] = PyDoc_STR("perf throttle event object.");
173
174static PyMemberDef pyrf_throttle_event__members[] = {
175	sample_members
176	member_def(perf_event_header, type, T_UINT, "event type"),
177	member_def(throttle_event, time, T_ULONGLONG, "timestamp"),
178	member_def(throttle_event, id, T_ULONGLONG, "event id"),
179	member_def(throttle_event, stream_id, T_ULONGLONG, "event stream id"),
180	{ .name = NULL, },
181};
182
183static PyObject *pyrf_throttle_event__repr(struct pyrf_event *pevent)
184{
185	struct throttle_event *te = (struct throttle_event *)(&pevent->event.header + 1);
186
187	return PyString_FromFormat("{ type: %sthrottle, time: %" PRIu64 ", id: %" PRIu64
188				   ", stream_id: %" PRIu64 " }",
189				   pevent->event.header.type == PERF_RECORD_THROTTLE ? "" : "un",
190				   te->time, te->id, te->stream_id);
191}
192
193static PyTypeObject pyrf_throttle_event__type = {
194	PyVarObject_HEAD_INIT(NULL, 0)
195	.tp_name	= "perf.throttle_event",
196	.tp_basicsize	= sizeof(struct pyrf_event),
197	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
198	.tp_doc		= pyrf_throttle_event__doc,
199	.tp_members	= pyrf_throttle_event__members,
200	.tp_repr	= (reprfunc)pyrf_throttle_event__repr,
201};
202
203static char pyrf_lost_event__doc[] = PyDoc_STR("perf lost event object.");
204
205static PyMemberDef pyrf_lost_event__members[] = {
206	sample_members
207	member_def(lost_event, id, T_ULONGLONG, "event id"),
208	member_def(lost_event, lost, T_ULONGLONG, "number of lost events"),
209	{ .name = NULL, },
210};
211
212static PyObject *pyrf_lost_event__repr(struct pyrf_event *pevent)
213{
214	PyObject *ret;
215	char *s;
216
217	if (asprintf(&s, "{ type: lost, id: %#" PRIx64 ", "
218			 "lost: %#" PRIx64 " }",
219		     pevent->event.lost.id, pevent->event.lost.lost) < 0) {
220		ret = PyErr_NoMemory();
221	} else {
222		ret = PyString_FromString(s);
223		free(s);
224	}
225	return ret;
226}
227
228static PyTypeObject pyrf_lost_event__type = {
229	PyVarObject_HEAD_INIT(NULL, 0)
230	.tp_name	= "perf.lost_event",
231	.tp_basicsize	= sizeof(struct pyrf_event),
232	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
233	.tp_doc		= pyrf_lost_event__doc,
234	.tp_members	= pyrf_lost_event__members,
235	.tp_repr	= (reprfunc)pyrf_lost_event__repr,
236};
237
238static char pyrf_read_event__doc[] = PyDoc_STR("perf read event object.");
239
240static PyMemberDef pyrf_read_event__members[] = {
241	sample_members
242	member_def(read_event, pid, T_UINT, "event pid"),
243	member_def(read_event, tid, T_UINT, "event tid"),
244	{ .name = NULL, },
245};
246
247static PyObject *pyrf_read_event__repr(struct pyrf_event *pevent)
248{
249	return PyString_FromFormat("{ type: read, pid: %u, tid: %u }",
250				   pevent->event.read.pid,
251				   pevent->event.read.tid);
252	/*
253 	 * FIXME: return the array of read values,
254 	 * making this method useful ;-)
255 	 */
256}
257
258static PyTypeObject pyrf_read_event__type = {
259	PyVarObject_HEAD_INIT(NULL, 0)
260	.tp_name	= "perf.read_event",
261	.tp_basicsize	= sizeof(struct pyrf_event),
262	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
263	.tp_doc		= pyrf_read_event__doc,
264	.tp_members	= pyrf_read_event__members,
265	.tp_repr	= (reprfunc)pyrf_read_event__repr,
266};
267
268static char pyrf_sample_event__doc[] = PyDoc_STR("perf sample event object.");
269
270static PyMemberDef pyrf_sample_event__members[] = {
271	sample_members
272	member_def(perf_event_header, type, T_UINT, "event type"),
273	{ .name = NULL, },
274};
275
276static PyObject *pyrf_sample_event__repr(struct pyrf_event *pevent)
277{
278	PyObject *ret;
279	char *s;
280
281	if (asprintf(&s, "{ type: sample }") < 0) {
282		ret = PyErr_NoMemory();
283	} else {
284		ret = PyString_FromString(s);
285		free(s);
286	}
287	return ret;
288}
289
290static PyTypeObject pyrf_sample_event__type = {
291	PyVarObject_HEAD_INIT(NULL, 0)
292	.tp_name	= "perf.sample_event",
293	.tp_basicsize	= sizeof(struct pyrf_event),
294	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
295	.tp_doc		= pyrf_sample_event__doc,
296	.tp_members	= pyrf_sample_event__members,
297	.tp_repr	= (reprfunc)pyrf_sample_event__repr,
298};
299
300static int pyrf_event__setup_types(void)
301{
302	int err;
303	pyrf_mmap_event__type.tp_new =
304	pyrf_task_event__type.tp_new =
305	pyrf_comm_event__type.tp_new =
306	pyrf_lost_event__type.tp_new =
307	pyrf_read_event__type.tp_new =
308	pyrf_sample_event__type.tp_new =
309	pyrf_throttle_event__type.tp_new = PyType_GenericNew;
310	err = PyType_Ready(&pyrf_mmap_event__type);
311	if (err < 0)
312		goto out;
313	err = PyType_Ready(&pyrf_lost_event__type);
314	if (err < 0)
315		goto out;
316	err = PyType_Ready(&pyrf_task_event__type);
317	if (err < 0)
318		goto out;
319	err = PyType_Ready(&pyrf_comm_event__type);
320	if (err < 0)
321		goto out;
322	err = PyType_Ready(&pyrf_throttle_event__type);
323	if (err < 0)
324		goto out;
325	err = PyType_Ready(&pyrf_read_event__type);
326	if (err < 0)
327		goto out;
328	err = PyType_Ready(&pyrf_sample_event__type);
329	if (err < 0)
330		goto out;
331out:
332	return err;
333}
334
335static PyTypeObject *pyrf_event__type[] = {
336	[PERF_RECORD_MMAP]	 = &pyrf_mmap_event__type,
337	[PERF_RECORD_LOST]	 = &pyrf_lost_event__type,
338	[PERF_RECORD_COMM]	 = &pyrf_comm_event__type,
339	[PERF_RECORD_EXIT]	 = &pyrf_task_event__type,
340	[PERF_RECORD_THROTTLE]	 = &pyrf_throttle_event__type,
341	[PERF_RECORD_UNTHROTTLE] = &pyrf_throttle_event__type,
342	[PERF_RECORD_FORK]	 = &pyrf_task_event__type,
343	[PERF_RECORD_READ]	 = &pyrf_read_event__type,
344	[PERF_RECORD_SAMPLE]	 = &pyrf_sample_event__type,
345};
346
347static PyObject *pyrf_event__new(union perf_event *event)
348{
349	struct pyrf_event *pevent;
350	PyTypeObject *ptype;
351
352	if (event->header.type < PERF_RECORD_MMAP ||
353	    event->header.type > PERF_RECORD_SAMPLE)
354		return NULL;
355
356	ptype = pyrf_event__type[event->header.type];
357	pevent = PyObject_New(struct pyrf_event, ptype);
358	if (pevent != NULL)
359		memcpy(&pevent->event, event, event->header.size);
360	return (PyObject *)pevent;
361}
362
363struct pyrf_cpu_map {
364	PyObject_HEAD
365
366	struct cpu_map *cpus;
367};
368
369static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus,
370			      PyObject *args, PyObject *kwargs)
371{
372	static char *kwlist[] = { "cpustr", NULL };
373	char *cpustr = NULL;
374
375	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
376					 kwlist, &cpustr))
377		return -1;
378
379	pcpus->cpus = cpu_map__new(cpustr);
380	if (pcpus->cpus == NULL)
381		return -1;
382	return 0;
383}
384
385static void pyrf_cpu_map__delete(struct pyrf_cpu_map *pcpus)
386{
387	cpu_map__delete(pcpus->cpus);
388	pcpus->ob_type->tp_free((PyObject*)pcpus);
389}
390
391static Py_ssize_t pyrf_cpu_map__length(PyObject *obj)
392{
393	struct pyrf_cpu_map *pcpus = (void *)obj;
394
395	return pcpus->cpus->nr;
396}
397
398static PyObject *pyrf_cpu_map__item(PyObject *obj, Py_ssize_t i)
399{
400	struct pyrf_cpu_map *pcpus = (void *)obj;
401
402	if (i >= pcpus->cpus->nr)
403		return NULL;
404
405	return Py_BuildValue("i", pcpus->cpus->map[i]);
406}
407
408static PySequenceMethods pyrf_cpu_map__sequence_methods = {
409	.sq_length = pyrf_cpu_map__length,
410	.sq_item   = pyrf_cpu_map__item,
411};
412
413static char pyrf_cpu_map__doc[] = PyDoc_STR("cpu map object.");
414
415static PyTypeObject pyrf_cpu_map__type = {
416	PyVarObject_HEAD_INIT(NULL, 0)
417	.tp_name	= "perf.cpu_map",
418	.tp_basicsize	= sizeof(struct pyrf_cpu_map),
419	.tp_dealloc	= (destructor)pyrf_cpu_map__delete,
420	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
421	.tp_doc		= pyrf_cpu_map__doc,
422	.tp_as_sequence	= &pyrf_cpu_map__sequence_methods,
423	.tp_init	= (initproc)pyrf_cpu_map__init,
424};
425
426static int pyrf_cpu_map__setup_types(void)
427{
428	pyrf_cpu_map__type.tp_new = PyType_GenericNew;
429	return PyType_Ready(&pyrf_cpu_map__type);
430}
431
432struct pyrf_thread_map {
433	PyObject_HEAD
434
435	struct thread_map *threads;
436};
437
438static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
439				 PyObject *args, PyObject *kwargs)
440{
441	static char *kwlist[] = { "pid", "tid", "uid", NULL };
442	int pid = -1, tid = -1, uid = UINT_MAX;
443
444	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
445					 kwlist, &pid, &tid, &uid))
446		return -1;
447
448	pthreads->threads = thread_map__new(pid, tid, uid);
449	if (pthreads->threads == NULL)
450		return -1;
451	return 0;
452}
453
454static void pyrf_thread_map__delete(struct pyrf_thread_map *pthreads)
455{
456	thread_map__delete(pthreads->threads);
457	pthreads->ob_type->tp_free((PyObject*)pthreads);
458}
459
460static Py_ssize_t pyrf_thread_map__length(PyObject *obj)
461{
462	struct pyrf_thread_map *pthreads = (void *)obj;
463
464	return pthreads->threads->nr;
465}
466
467static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
468{
469	struct pyrf_thread_map *pthreads = (void *)obj;
470
471	if (i >= pthreads->threads->nr)
472		return NULL;
473
474	return Py_BuildValue("i", pthreads->threads->map[i]);
475}
476
477static PySequenceMethods pyrf_thread_map__sequence_methods = {
478	.sq_length = pyrf_thread_map__length,
479	.sq_item   = pyrf_thread_map__item,
480};
481
482static char pyrf_thread_map__doc[] = PyDoc_STR("thread map object.");
483
484static PyTypeObject pyrf_thread_map__type = {
485	PyVarObject_HEAD_INIT(NULL, 0)
486	.tp_name	= "perf.thread_map",
487	.tp_basicsize	= sizeof(struct pyrf_thread_map),
488	.tp_dealloc	= (destructor)pyrf_thread_map__delete,
489	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
490	.tp_doc		= pyrf_thread_map__doc,
491	.tp_as_sequence	= &pyrf_thread_map__sequence_methods,
492	.tp_init	= (initproc)pyrf_thread_map__init,
493};
494
495static int pyrf_thread_map__setup_types(void)
496{
497	pyrf_thread_map__type.tp_new = PyType_GenericNew;
498	return PyType_Ready(&pyrf_thread_map__type);
499}
500
501struct pyrf_evsel {
502	PyObject_HEAD
503
504	struct perf_evsel evsel;
505};
506
507static int pyrf_evsel__init(struct pyrf_evsel *pevsel,
508			    PyObject *args, PyObject *kwargs)
509{
510	struct perf_event_attr attr = {
511		.type = PERF_TYPE_HARDWARE,
512		.config = PERF_COUNT_HW_CPU_CYCLES,
513		.sample_type = PERF_SAMPLE_PERIOD | PERF_SAMPLE_TID,
514	};
515	static char *kwlist[] = {
516		"type",
517		"config",
518		"sample_freq",
519		"sample_period",
520		"sample_type",
521		"read_format",
522		"disabled",
523		"inherit",
524		"pinned",
525		"exclusive",
526		"exclude_user",
527		"exclude_kernel",
528		"exclude_hv",
529		"exclude_idle",
530		"mmap",
531		"comm",
532		"freq",
533		"inherit_stat",
534		"enable_on_exec",
535		"task",
536		"watermark",
537		"precise_ip",
538		"mmap_data",
539		"sample_id_all",
540		"wakeup_events",
541		"bp_type",
542		"bp_addr",
543		"bp_len",
544		 NULL
545	};
546	u64 sample_period = 0;
547	u32 disabled = 0,
548	    inherit = 0,
549	    pinned = 0,
550	    exclusive = 0,
551	    exclude_user = 0,
552	    exclude_kernel = 0,
553	    exclude_hv = 0,
554	    exclude_idle = 0,
555	    mmap = 0,
556	    comm = 0,
557	    freq = 1,
558	    inherit_stat = 0,
559	    enable_on_exec = 0,
560	    task = 0,
561	    watermark = 0,
562	    precise_ip = 0,
563	    mmap_data = 0,
564	    sample_id_all = 1;
565	int idx = 0;
566
567	if (!PyArg_ParseTupleAndKeywords(args, kwargs,
568					 "|iKiKKiiiiiiiiiiiiiiiiiiiiiKK", kwlist,
569					 &attr.type, &attr.config, &attr.sample_freq,
570					 &sample_period, &attr.sample_type,
571					 &attr.read_format, &disabled, &inherit,
572					 &pinned, &exclusive, &exclude_user,
573					 &exclude_kernel, &exclude_hv, &exclude_idle,
574					 &mmap, &comm, &freq, &inherit_stat,
575					 &enable_on_exec, &task, &watermark,
576					 &precise_ip, &mmap_data, &sample_id_all,
577					 &attr.wakeup_events, &attr.bp_type,
578					 &attr.bp_addr, &attr.bp_len, &idx))
579		return -1;
580
581	/* union... */
582	if (sample_period != 0) {
583		if (attr.sample_freq != 0)
584			return -1; /* FIXME: throw right exception */
585		attr.sample_period = sample_period;
586	}
587
588	/* Bitfields */
589	attr.disabled	    = disabled;
590	attr.inherit	    = inherit;
591	attr.pinned	    = pinned;
592	attr.exclusive	    = exclusive;
593	attr.exclude_user   = exclude_user;
594	attr.exclude_kernel = exclude_kernel;
595	attr.exclude_hv	    = exclude_hv;
596	attr.exclude_idle   = exclude_idle;
597	attr.mmap	    = mmap;
598	attr.comm	    = comm;
599	attr.freq	    = freq;
600	attr.inherit_stat   = inherit_stat;
601	attr.enable_on_exec = enable_on_exec;
602	attr.task	    = task;
603	attr.watermark	    = watermark;
604	attr.precise_ip	    = precise_ip;
605	attr.mmap_data	    = mmap_data;
606	attr.sample_id_all  = sample_id_all;
607
608	perf_evsel__init(&pevsel->evsel, &attr, idx);
609	return 0;
610}
611
612static void pyrf_evsel__delete(struct pyrf_evsel *pevsel)
613{
614	perf_evsel__exit(&pevsel->evsel);
615	pevsel->ob_type->tp_free((PyObject*)pevsel);
616}
617
618static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
619				  PyObject *args, PyObject *kwargs)
620{
621	struct perf_evsel *evsel = &pevsel->evsel;
622	struct cpu_map *cpus = NULL;
623	struct thread_map *threads = NULL;
624	PyObject *pcpus = NULL, *pthreads = NULL;
625	int group = 0, inherit = 0;
626	static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL };
627
628	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist,
629					 &pcpus, &pthreads, &group, &inherit))
630		return NULL;
631
632	if (pthreads != NULL)
633		threads = ((struct pyrf_thread_map *)pthreads)->threads;
634
635	if (pcpus != NULL)
636		cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
637
638	evsel->attr.inherit = inherit;
639	/*
640	 * This will group just the fds for this single evsel, to group
641	 * multiple events, use evlist.open().
642	 */
643	if (perf_evsel__open(evsel, cpus, threads) < 0) {
644		PyErr_SetFromErrno(PyExc_OSError);
645		return NULL;
646	}
647
648	Py_INCREF(Py_None);
649	return Py_None;
650}
651
652static PyMethodDef pyrf_evsel__methods[] = {
653	{
654		.ml_name  = "open",
655		.ml_meth  = (PyCFunction)pyrf_evsel__open,
656		.ml_flags = METH_VARARGS | METH_KEYWORDS,
657		.ml_doc	  = PyDoc_STR("open the event selector file descriptor table.")
658	},
659	{ .ml_name = NULL, }
660};
661
662static char pyrf_evsel__doc[] = PyDoc_STR("perf event selector list object.");
663
664static PyTypeObject pyrf_evsel__type = {
665	PyVarObject_HEAD_INIT(NULL, 0)
666	.tp_name	= "perf.evsel",
667	.tp_basicsize	= sizeof(struct pyrf_evsel),
668	.tp_dealloc	= (destructor)pyrf_evsel__delete,
669	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
670	.tp_doc		= pyrf_evsel__doc,
671	.tp_methods	= pyrf_evsel__methods,
672	.tp_init	= (initproc)pyrf_evsel__init,
673};
674
675static int pyrf_evsel__setup_types(void)
676{
677	pyrf_evsel__type.tp_new = PyType_GenericNew;
678	return PyType_Ready(&pyrf_evsel__type);
679}
680
681struct pyrf_evlist {
682	PyObject_HEAD
683
684	struct perf_evlist evlist;
685};
686
687static int pyrf_evlist__init(struct pyrf_evlist *pevlist,
688			     PyObject *args, PyObject *kwargs __maybe_unused)
689{
690	PyObject *pcpus = NULL, *pthreads = NULL;
691	struct cpu_map *cpus;
692	struct thread_map *threads;
693
694	if (!PyArg_ParseTuple(args, "OO", &pcpus, &pthreads))
695		return -1;
696
697	threads = ((struct pyrf_thread_map *)pthreads)->threads;
698	cpus = ((struct pyrf_cpu_map *)pcpus)->cpus;
699	perf_evlist__init(&pevlist->evlist, cpus, threads);
700	return 0;
701}
702
703static void pyrf_evlist__delete(struct pyrf_evlist *pevlist)
704{
705	perf_evlist__exit(&pevlist->evlist);
706	pevlist->ob_type->tp_free((PyObject*)pevlist);
707}
708
709static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist,
710				   PyObject *args, PyObject *kwargs)
711{
712	struct perf_evlist *evlist = &pevlist->evlist;
713	static char *kwlist[] = { "pages", "overwrite", NULL };
714	int pages = 128, overwrite = false;
715
716	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist,
717					 &pages, &overwrite))
718		return NULL;
719
720	if (perf_evlist__mmap(evlist, pages, overwrite) < 0) {
721		PyErr_SetFromErrno(PyExc_OSError);
722		return NULL;
723	}
724
725	Py_INCREF(Py_None);
726	return Py_None;
727}
728
729static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
730				   PyObject *args, PyObject *kwargs)
731{
732	struct perf_evlist *evlist = &pevlist->evlist;
733	static char *kwlist[] = { "timeout", NULL };
734	int timeout = -1, n;
735
736	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
737		return NULL;
738
739	n = perf_evlist__poll(evlist, timeout);
740	if (n < 0) {
741		PyErr_SetFromErrno(PyExc_OSError);
742		return NULL;
743	}
744
745	return Py_BuildValue("i", n);
746}
747
748static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist,
749					 PyObject *args __maybe_unused,
750					 PyObject *kwargs __maybe_unused)
751{
752	struct perf_evlist *evlist = &pevlist->evlist;
753        PyObject *list = PyList_New(0);
754	int i;
755
756	for (i = 0; i < evlist->pollfd.nr; ++i) {
757		PyObject *file;
758		FILE *fp = fdopen(evlist->pollfd.entries[i].fd, "r");
759
760		if (fp == NULL)
761			goto free_list;
762
763		file = PyFile_FromFile(fp, "perf", "r", NULL);
764		if (file == NULL)
765			goto free_list;
766
767		if (PyList_Append(list, file) != 0) {
768			Py_DECREF(file);
769			goto free_list;
770		}
771
772		Py_DECREF(file);
773	}
774
775	return list;
776free_list:
777	return PyErr_NoMemory();
778}
779
780
781static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
782				  PyObject *args,
783				  PyObject *kwargs __maybe_unused)
784{
785	struct perf_evlist *evlist = &pevlist->evlist;
786	PyObject *pevsel;
787	struct perf_evsel *evsel;
788
789	if (!PyArg_ParseTuple(args, "O", &pevsel))
790		return NULL;
791
792	Py_INCREF(pevsel);
793	evsel = &((struct pyrf_evsel *)pevsel)->evsel;
794	evsel->idx = evlist->nr_entries;
795	perf_evlist__add(evlist, evsel);
796
797	return Py_BuildValue("i", evlist->nr_entries);
798}
799
800static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
801					  PyObject *args, PyObject *kwargs)
802{
803	struct perf_evlist *evlist = &pevlist->evlist;
804	union perf_event *event;
805	int sample_id_all = 1, cpu;
806	static char *kwlist[] = { "cpu", "sample_id_all", NULL };
807	int err;
808
809	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
810					 &cpu, &sample_id_all))
811		return NULL;
812
813	event = perf_evlist__mmap_read(evlist, cpu);
814	if (event != NULL) {
815		PyObject *pyevent = pyrf_event__new(event);
816		struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
817
818		perf_evlist__mmap_consume(evlist, cpu);
819
820		if (pyevent == NULL)
821			return PyErr_NoMemory();
822
823		err = perf_evlist__parse_sample(evlist, event, &pevent->sample);
824		if (err)
825			return PyErr_Format(PyExc_OSError,
826					    "perf: can't parse sample, err=%d", err);
827		return pyevent;
828	}
829
830	Py_INCREF(Py_None);
831	return Py_None;
832}
833
834static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
835				   PyObject *args, PyObject *kwargs)
836{
837	struct perf_evlist *evlist = &pevlist->evlist;
838	int group = 0;
839	static char *kwlist[] = { "group", NULL };
840
841	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
842		return NULL;
843
844	if (group)
845		perf_evlist__set_leader(evlist);
846
847	if (perf_evlist__open(evlist) < 0) {
848		PyErr_SetFromErrno(PyExc_OSError);
849		return NULL;
850	}
851
852	Py_INCREF(Py_None);
853	return Py_None;
854}
855
856static PyMethodDef pyrf_evlist__methods[] = {
857	{
858		.ml_name  = "mmap",
859		.ml_meth  = (PyCFunction)pyrf_evlist__mmap,
860		.ml_flags = METH_VARARGS | METH_KEYWORDS,
861		.ml_doc	  = PyDoc_STR("mmap the file descriptor table.")
862	},
863	{
864		.ml_name  = "open",
865		.ml_meth  = (PyCFunction)pyrf_evlist__open,
866		.ml_flags = METH_VARARGS | METH_KEYWORDS,
867		.ml_doc	  = PyDoc_STR("open the file descriptors.")
868	},
869	{
870		.ml_name  = "poll",
871		.ml_meth  = (PyCFunction)pyrf_evlist__poll,
872		.ml_flags = METH_VARARGS | METH_KEYWORDS,
873		.ml_doc	  = PyDoc_STR("poll the file descriptor table.")
874	},
875	{
876		.ml_name  = "get_pollfd",
877		.ml_meth  = (PyCFunction)pyrf_evlist__get_pollfd,
878		.ml_flags = METH_VARARGS | METH_KEYWORDS,
879		.ml_doc	  = PyDoc_STR("get the poll file descriptor table.")
880	},
881	{
882		.ml_name  = "add",
883		.ml_meth  = (PyCFunction)pyrf_evlist__add,
884		.ml_flags = METH_VARARGS | METH_KEYWORDS,
885		.ml_doc	  = PyDoc_STR("adds an event selector to the list.")
886	},
887	{
888		.ml_name  = "read_on_cpu",
889		.ml_meth  = (PyCFunction)pyrf_evlist__read_on_cpu,
890		.ml_flags = METH_VARARGS | METH_KEYWORDS,
891		.ml_doc	  = PyDoc_STR("reads an event.")
892	},
893	{ .ml_name = NULL, }
894};
895
896static Py_ssize_t pyrf_evlist__length(PyObject *obj)
897{
898	struct pyrf_evlist *pevlist = (void *)obj;
899
900	return pevlist->evlist.nr_entries;
901}
902
903static PyObject *pyrf_evlist__item(PyObject *obj, Py_ssize_t i)
904{
905	struct pyrf_evlist *pevlist = (void *)obj;
906	struct perf_evsel *pos;
907
908	if (i >= pevlist->evlist.nr_entries)
909		return NULL;
910
911	evlist__for_each(&pevlist->evlist, pos) {
912		if (i-- == 0)
913			break;
914	}
915
916	return Py_BuildValue("O", container_of(pos, struct pyrf_evsel, evsel));
917}
918
919static PySequenceMethods pyrf_evlist__sequence_methods = {
920	.sq_length = pyrf_evlist__length,
921	.sq_item   = pyrf_evlist__item,
922};
923
924static char pyrf_evlist__doc[] = PyDoc_STR("perf event selector list object.");
925
926static PyTypeObject pyrf_evlist__type = {
927	PyVarObject_HEAD_INIT(NULL, 0)
928	.tp_name	= "perf.evlist",
929	.tp_basicsize	= sizeof(struct pyrf_evlist),
930	.tp_dealloc	= (destructor)pyrf_evlist__delete,
931	.tp_flags	= Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
932	.tp_as_sequence	= &pyrf_evlist__sequence_methods,
933	.tp_doc		= pyrf_evlist__doc,
934	.tp_methods	= pyrf_evlist__methods,
935	.tp_init	= (initproc)pyrf_evlist__init,
936};
937
938static int pyrf_evlist__setup_types(void)
939{
940	pyrf_evlist__type.tp_new = PyType_GenericNew;
941	return PyType_Ready(&pyrf_evlist__type);
942}
943
944static struct {
945	const char *name;
946	int	    value;
947} perf__constants[] = {
948	{ "TYPE_HARDWARE",   PERF_TYPE_HARDWARE },
949	{ "TYPE_SOFTWARE",   PERF_TYPE_SOFTWARE },
950	{ "TYPE_TRACEPOINT", PERF_TYPE_TRACEPOINT },
951	{ "TYPE_HW_CACHE",   PERF_TYPE_HW_CACHE },
952	{ "TYPE_RAW",	     PERF_TYPE_RAW },
953	{ "TYPE_BREAKPOINT", PERF_TYPE_BREAKPOINT },
954
955	{ "COUNT_HW_CPU_CYCLES",	  PERF_COUNT_HW_CPU_CYCLES },
956	{ "COUNT_HW_INSTRUCTIONS",	  PERF_COUNT_HW_INSTRUCTIONS },
957	{ "COUNT_HW_CACHE_REFERENCES",	  PERF_COUNT_HW_CACHE_REFERENCES },
958	{ "COUNT_HW_CACHE_MISSES",	  PERF_COUNT_HW_CACHE_MISSES },
959	{ "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
960	{ "COUNT_HW_BRANCH_MISSES",	  PERF_COUNT_HW_BRANCH_MISSES },
961	{ "COUNT_HW_BUS_CYCLES",	  PERF_COUNT_HW_BUS_CYCLES },
962	{ "COUNT_HW_CACHE_L1D",		  PERF_COUNT_HW_CACHE_L1D },
963	{ "COUNT_HW_CACHE_L1I",		  PERF_COUNT_HW_CACHE_L1I },
964	{ "COUNT_HW_CACHE_LL",	  	  PERF_COUNT_HW_CACHE_LL },
965	{ "COUNT_HW_CACHE_DTLB",	  PERF_COUNT_HW_CACHE_DTLB },
966	{ "COUNT_HW_CACHE_ITLB",	  PERF_COUNT_HW_CACHE_ITLB },
967	{ "COUNT_HW_CACHE_BPU",		  PERF_COUNT_HW_CACHE_BPU },
968	{ "COUNT_HW_CACHE_OP_READ",	  PERF_COUNT_HW_CACHE_OP_READ },
969	{ "COUNT_HW_CACHE_OP_WRITE",	  PERF_COUNT_HW_CACHE_OP_WRITE },
970	{ "COUNT_HW_CACHE_OP_PREFETCH",	  PERF_COUNT_HW_CACHE_OP_PREFETCH },
971	{ "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS },
972	{ "COUNT_HW_CACHE_RESULT_MISS",   PERF_COUNT_HW_CACHE_RESULT_MISS },
973
974	{ "COUNT_HW_STALLED_CYCLES_FRONTEND",	  PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
975	{ "COUNT_HW_STALLED_CYCLES_BACKEND",	  PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
976
977	{ "COUNT_SW_CPU_CLOCK",	       PERF_COUNT_SW_CPU_CLOCK },
978	{ "COUNT_SW_TASK_CLOCK",       PERF_COUNT_SW_TASK_CLOCK },
979	{ "COUNT_SW_PAGE_FAULTS",      PERF_COUNT_SW_PAGE_FAULTS },
980	{ "COUNT_SW_CONTEXT_SWITCHES", PERF_COUNT_SW_CONTEXT_SWITCHES },
981	{ "COUNT_SW_CPU_MIGRATIONS",   PERF_COUNT_SW_CPU_MIGRATIONS },
982	{ "COUNT_SW_PAGE_FAULTS_MIN",  PERF_COUNT_SW_PAGE_FAULTS_MIN },
983	{ "COUNT_SW_PAGE_FAULTS_MAJ",  PERF_COUNT_SW_PAGE_FAULTS_MAJ },
984	{ "COUNT_SW_ALIGNMENT_FAULTS", PERF_COUNT_SW_ALIGNMENT_FAULTS },
985	{ "COUNT_SW_EMULATION_FAULTS", PERF_COUNT_SW_EMULATION_FAULTS },
986	{ "COUNT_SW_DUMMY",            PERF_COUNT_SW_DUMMY },
987
988	{ "SAMPLE_IP",	      PERF_SAMPLE_IP },
989	{ "SAMPLE_TID",	      PERF_SAMPLE_TID },
990	{ "SAMPLE_TIME",      PERF_SAMPLE_TIME },
991	{ "SAMPLE_ADDR",      PERF_SAMPLE_ADDR },
992	{ "SAMPLE_READ",      PERF_SAMPLE_READ },
993	{ "SAMPLE_CALLCHAIN", PERF_SAMPLE_CALLCHAIN },
994	{ "SAMPLE_ID",	      PERF_SAMPLE_ID },
995	{ "SAMPLE_CPU",	      PERF_SAMPLE_CPU },
996	{ "SAMPLE_PERIOD",    PERF_SAMPLE_PERIOD },
997	{ "SAMPLE_STREAM_ID", PERF_SAMPLE_STREAM_ID },
998	{ "SAMPLE_RAW",	      PERF_SAMPLE_RAW },
999
1000	{ "FORMAT_TOTAL_TIME_ENABLED", PERF_FORMAT_TOTAL_TIME_ENABLED },
1001	{ "FORMAT_TOTAL_TIME_RUNNING", PERF_FORMAT_TOTAL_TIME_RUNNING },
1002	{ "FORMAT_ID",		       PERF_FORMAT_ID },
1003	{ "FORMAT_GROUP",	       PERF_FORMAT_GROUP },
1004
1005	{ "RECORD_MMAP",       PERF_RECORD_MMAP },
1006	{ "RECORD_LOST",       PERF_RECORD_LOST },
1007	{ "RECORD_COMM",       PERF_RECORD_COMM },
1008	{ "RECORD_EXIT",       PERF_RECORD_EXIT },
1009	{ "RECORD_THROTTLE",   PERF_RECORD_THROTTLE },
1010	{ "RECORD_UNTHROTTLE", PERF_RECORD_UNTHROTTLE },
1011	{ "RECORD_FORK",       PERF_RECORD_FORK },
1012	{ "RECORD_READ",       PERF_RECORD_READ },
1013	{ "RECORD_SAMPLE",     PERF_RECORD_SAMPLE },
1014	{ .name = NULL, },
1015};
1016
1017static PyMethodDef perf__methods[] = {
1018	{ .ml_name = NULL, }
1019};
1020
1021PyMODINIT_FUNC initperf(void)
1022{
1023	PyObject *obj;
1024	int i;
1025	PyObject *dict, *module = Py_InitModule("perf", perf__methods);
1026
1027	if (module == NULL ||
1028	    pyrf_event__setup_types() < 0 ||
1029	    pyrf_evlist__setup_types() < 0 ||
1030	    pyrf_evsel__setup_types() < 0 ||
1031	    pyrf_thread_map__setup_types() < 0 ||
1032	    pyrf_cpu_map__setup_types() < 0)
1033		return;
1034
1035	/* The page_size is placed in util object. */
1036	page_size = sysconf(_SC_PAGE_SIZE);
1037
1038	Py_INCREF(&pyrf_evlist__type);
1039	PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
1040
1041	Py_INCREF(&pyrf_evsel__type);
1042	PyModule_AddObject(module, "evsel", (PyObject*)&pyrf_evsel__type);
1043
1044	Py_INCREF(&pyrf_thread_map__type);
1045	PyModule_AddObject(module, "thread_map", (PyObject*)&pyrf_thread_map__type);
1046
1047	Py_INCREF(&pyrf_cpu_map__type);
1048	PyModule_AddObject(module, "cpu_map", (PyObject*)&pyrf_cpu_map__type);
1049
1050	dict = PyModule_GetDict(module);
1051	if (dict == NULL)
1052		goto error;
1053
1054	for (i = 0; perf__constants[i].name != NULL; i++) {
1055		obj = PyInt_FromLong(perf__constants[i].value);
1056		if (obj == NULL)
1057			goto error;
1058		PyDict_SetItemString(dict, perf__constants[i].name, obj);
1059		Py_DECREF(obj);
1060	}
1061
1062error:
1063	if (PyErr_Occurred())
1064		PyErr_SetString(PyExc_ImportError, "perf: Init failed!");
1065}
1066
1067/*
1068 * Dummy, to avoid dragging all the test_attr infrastructure in the python
1069 * binding.
1070 */
1071void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
1072                     int fd, int group_fd, unsigned long flags)
1073{
1074}
1075