summaryrefslogtreecommitdiff
path: root/tools/perf/util/data-convert-bt.c
blob: ff4826c1745fa0b00fd617f5362c032b64d396ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
/*
 * CTF writing support via babeltrace.
 *
 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 *
 * Released under the GPL v2. (and only v2, not any later version)
 */

#include <linux/compiler.h>
#include <babeltrace/ctf-writer/writer.h>
#include <babeltrace/ctf-writer/clock.h>
#include <babeltrace/ctf-writer/stream.h>
#include <babeltrace/ctf-writer/event.h>
#include <babeltrace/ctf-writer/event-types.h>
#include <babeltrace/ctf-writer/event-fields.h>
#include <babeltrace/ctf/events.h>
#include <traceevent/event-parse.h>
#include "asm/bug.h"
#include "data-convert-bt.h"
#include "session.h"
#include "util.h"
#include "debug.h"
#include "tool.h"
#include "evlist.h"
#include "evsel.h"
#include "machine.h"

#define pr_N(n, fmt, ...) \
	eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)

#define pr(fmt, ...)  pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)

#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)

struct evsel_priv {
	struct bt_ctf_event_class *event_class;
};

struct ctf_writer {
	/* writer primitives */
	struct bt_ctf_writer		*writer;
	struct bt_ctf_stream		*stream;
	struct bt_ctf_stream_class	*stream_class;
	struct bt_ctf_clock		*clock;

	/* data types */
	union {
		struct {
			struct bt_ctf_field_type	*s64;
			struct bt_ctf_field_type	*u64;
			struct bt_ctf_field_type	*s32;
			struct bt_ctf_field_type	*u32;
			struct bt_ctf_field_type	*string;
			struct bt_ctf_field_type	*u64_hex;
		};
		struct bt_ctf_field_type *array[6];
	} data;
};

struct convert {
	struct perf_tool	tool;
	struct ctf_writer	writer;

	u64			events_size;
	u64			events_count;
};

static int value_set(struct bt_ctf_field_type *type,
		     struct bt_ctf_event *event,
		     const char *name, u64 val)
{
	struct bt_ctf_field *field;
	bool sign = bt_ctf_field_type_integer_get_signed(type);
	int ret;

	field = bt_ctf_field_create(type);
	if (!field) {
		pr_err("failed to create a field %s\n", name);
		return -1;
	}

	if (sign) {
		ret = bt_ctf_field_signed_integer_set_value(field, val);
		if (ret) {
			pr_err("failed to set field value %s\n", name);
			goto err;
		}
	} else {
		ret = bt_ctf_field_unsigned_integer_set_value(field, val);
		if (ret) {
			pr_err("failed to set field value %s\n", name);
			goto err;
		}
	}

	ret = bt_ctf_event_set_payload(event, name, field);
	if (ret) {
		pr_err("failed to set payload %s\n", name);
		goto err;
	}

	pr2("  SET [%s = %" PRIu64 "]\n", name, val);

err:
	bt_ctf_field_put(field);
	return ret;
}

#define __FUNC_VALUE_SET(_name, _val_type)				\
static __maybe_unused int value_set_##_name(struct ctf_writer *cw,	\
			     struct bt_ctf_event *event,		\
			     const char *name,				\
			     _val_type val)				\
{									\
	struct bt_ctf_field_type *type = cw->data._name;		\
	return value_set(type, event, name, (u64) val);			\
}

#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)

FUNC_VALUE_SET(s32)
FUNC_VALUE_SET(u32)
FUNC_VALUE_SET(s64)
FUNC_VALUE_SET(u64)
__FUNC_VALUE_SET(u64_hex, u64)

static int add_generic_values(struct ctf_writer *cw,
			      struct bt_ctf_event *event,
			      struct perf_evsel *evsel,
			      struct perf_sample *sample)
{
	u64 type = evsel->attr.sample_type;
	int ret;

	/*
	 * missing:
	 *   PERF_SAMPLE_TIME         - not needed as we have it in
	 *                              ctf event header
	 *   PERF_SAMPLE_READ         - TODO
	 *   PERF_SAMPLE_CALLCHAIN    - TODO
	 *   PERF_SAMPLE_RAW          - tracepoint fields are handled separately
	 *   PERF_SAMPLE_BRANCH_STACK - TODO
	 *   PERF_SAMPLE_REGS_USER    - TODO
	 *   PERF_SAMPLE_STACK_USER   - TODO
	 */

	if (type & PERF_SAMPLE_IP) {
		ret = value_set_u64_hex(cw, event, "ip", sample->ip);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_TID) {
		ret = value_set_s32(cw, event, "tid", sample->tid);
		if (ret)
			return -1;

		ret = value_set_s32(cw, event, "pid", sample->pid);
		if (ret)
			return -1;
	}

	if ((type & PERF_SAMPLE_ID) ||
	    (type & PERF_SAMPLE_IDENTIFIER)) {
		ret = value_set_u64(cw, event, "id", sample->id);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_STREAM_ID) {
		ret = value_set_u64(cw, event, "stream_id", sample->stream_id);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_CPU) {
		ret = value_set_u32(cw, event, "cpu", sample->cpu);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_PERIOD) {
		ret = value_set_u64(cw, event, "period", sample->period);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_WEIGHT) {
		ret = value_set_u64(cw, event, "weight", sample->weight);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_DATA_SRC) {
		ret = value_set_u64(cw, event, "data_src", sample->data_src);
		if (ret)
			return -1;
	}

	if (type & PERF_SAMPLE_TRANSACTION) {
		ret = value_set_u64(cw, event, "transaction", sample->transaction);
		if (ret)
			return -1;
	}

	return 0;
}

static int process_sample_event(struct perf_tool *tool,
				union perf_event *_event __maybe_unused,
				struct perf_sample *sample,
				struct perf_evsel *evsel,
				struct machine *machine __maybe_unused)
{
	struct convert *c = container_of(tool, struct convert, tool);
	struct evsel_priv *priv = evsel->priv;
	struct ctf_writer *cw = &c->writer;
	struct bt_ctf_event_class *event_class;
	struct bt_ctf_event *event;
	int ret;

	if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
		return 0;

	event_class = priv->event_class;

	/* update stats */
	c->events_count++;
	c->events_size += _event->header.size;

	pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);

	event = bt_ctf_event_create(event_class);
	if (!event) {
		pr_err("Failed to create an CTF event\n");
		return -1;
	}

	bt_ctf_clock_set_time(cw->clock, sample->time);

	ret = add_generic_values(cw, event, evsel, sample);
	if (ret)
		return -1;

	bt_ctf_stream_append_event(cw->stream, event);
	bt_ctf_event_put(event);
	return 0;
}

static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
			     struct bt_ctf_event_class *event_class)
{
	u64 type = evsel->attr.sample_type;

	/*
	 * missing:
	 *   PERF_SAMPLE_TIME         - not needed as we have it in
	 *                              ctf event header
	 *   PERF_SAMPLE_READ         - TODO
	 *   PERF_SAMPLE_CALLCHAIN    - TODO
	 *   PERF_SAMPLE_RAW          - tracepoint fields are handled separately
	 *   PERF_SAMPLE_BRANCH_STACK - TODO
	 *   PERF_SAMPLE_REGS_USER    - TODO
	 *   PERF_SAMPLE_STACK_USER   - TODO
	 */

#define ADD_FIELD(cl, t, n)						\
	do {								\
		pr2("  field '%s'\n", n);				\
		if (bt_ctf_event_class_add_field(cl, t, n)) {		\
			pr_err("Failed to add field '%s;\n", n);	\
			return -1;					\
		}							\
	} while (0)

	if (type & PERF_SAMPLE_IP)
		ADD_FIELD(event_class, cw->data.u64_hex, "ip");

	if (type & PERF_SAMPLE_TID) {
		ADD_FIELD(event_class, cw->data.s32, "tid");
		ADD_FIELD(event_class, cw->data.s32, "pid");
	}

	if ((type & PERF_SAMPLE_ID) ||
	    (type & PERF_SAMPLE_IDENTIFIER))
		ADD_FIELD(event_class, cw->data.u64, "id");

	if (type & PERF_SAMPLE_STREAM_ID)
		ADD_FIELD(event_class, cw->data.u64, "stream_id");

	if (type & PERF_SAMPLE_CPU)
		ADD_FIELD(event_class, cw->data.u32, "cpu");

	if (type & PERF_SAMPLE_PERIOD)
		ADD_FIELD(event_class, cw->data.u64, "period");

	if (type & PERF_SAMPLE_WEIGHT)
		ADD_FIELD(event_class, cw->data.u64, "weight");

	if (type & PERF_SAMPLE_DATA_SRC)
		ADD_FIELD(event_class, cw->data.u64, "data_src");

	if (type & PERF_SAMPLE_TRANSACTION)
		ADD_FIELD(event_class, cw->data.u64, "transaction");

#undef ADD_FIELD
	return 0;
}

static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
{
	struct bt_ctf_event_class *event_class;
	struct evsel_priv *priv;
	const char *name = perf_evsel__name(evsel);
	int ret;

	pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);

	event_class = bt_ctf_event_class_create(name);
	if (!event_class)
		return -1;

	ret = add_generic_types(cw, evsel, event_class);
	if (ret)
		goto err;

	ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
	if (ret) {
		pr("Failed to add event class into stream.\n");
		goto err;
	}

	priv = malloc(sizeof(*priv));
	if (!priv)
		goto err;

	priv->event_class = event_class;
	evsel->priv       = priv;
	return 0;

err:
	bt_ctf_event_class_put(event_class);
	pr_err("Failed to add event '%s'.\n", name);
	return -1;
}

static int setup_events(struct ctf_writer *cw, struct perf_session *session)
{
	struct perf_evlist *evlist = session->evlist;
	struct perf_evsel *evsel;
	int ret;

	evlist__for_each(evlist, evsel) {
		ret = add_event(cw, evsel);
		if (ret)
			return ret;
	}
	return 0;
}

static int ctf_writer__setup_env(struct ctf_writer *cw,
				 struct perf_session *session)
{
	struct perf_header *header = &session->header;
	struct bt_ctf_writer *writer = cw->writer;

#define ADD(__n, __v)							\
do {									\
	if (bt_ctf_writer_add_environment_field(writer, __n, __v))	\
		return -1;						\
} while (0)

	ADD("host",    header->env.hostname);
	ADD("sysname", "Linux");
	ADD("release", header->env.os_release);
	ADD("version", header->env.version);
	ADD("machine", header->env.arch);
	ADD("domain", "kernel");
	ADD("tracer_name", "perf");

#undef ADD
	return 0;
}

static int ctf_writer__setup_clock(struct ctf_writer *cw)
{
	struct bt_ctf_clock *clock = cw->clock;

	bt_ctf_clock_set_description(clock, "perf clock");

#define SET(__n, __v)				\
do {						\
	if (bt_ctf_clock_set_##__n(clock, __v))	\
		return -1;			\
} while (0)

	SET(frequency,   1000000000);
	SET(offset_s,    0);
	SET(offset,      0);
	SET(precision,   10);
	SET(is_absolute, 0);

#undef SET
	return 0;
}

static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
{
	struct bt_ctf_field_type *type;

	type = bt_ctf_field_type_integer_create(size);
	if (!type)
		return NULL;

	if (sign &&
	    bt_ctf_field_type_integer_set_signed(type, 1))
		goto err;

	if (hex &&
	    bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
		goto err;

	pr2("Created type: INTEGER %d-bit %ssigned %s\n",
	    size, sign ? "un" : "", hex ? "hex" : "");
	return type;

err:
	bt_ctf_field_type_put(type);
	return NULL;
}

static void ctf_writer__cleanup_data(struct ctf_writer *cw)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
		bt_ctf_field_type_put(cw->data.array[i]);
}

static int ctf_writer__init_data(struct ctf_writer *cw)
{
#define CREATE_INT_TYPE(type, size, sign, hex)		\
do {							\
	(type) = create_int_type(size, sign, hex);	\
	if (!(type))					\
		goto err;				\
} while (0)

	CREATE_INT_TYPE(cw->data.s64, 64, true,  false);
	CREATE_INT_TYPE(cw->data.u64, 64, false, false);
	CREATE_INT_TYPE(cw->data.s32, 32, true,  false);
	CREATE_INT_TYPE(cw->data.u32, 32, false, false);
	CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);

	cw->data.string  = bt_ctf_field_type_string_create();
	if (cw->data.string)
		return 0;

err:
	ctf_writer__cleanup_data(cw);
	pr_err("Failed to create data types.\n");
	return -1;
}

static void ctf_writer__cleanup(struct ctf_writer *cw)
{
	ctf_writer__cleanup_data(cw);

	bt_ctf_clock_put(cw->clock);
	bt_ctf_stream_put(cw->stream);
	bt_ctf_stream_class_put(cw->stream_class);
	bt_ctf_writer_put(cw->writer);

	/* and NULL all the pointers */
	memset(cw, 0, sizeof(*cw));
}

static int ctf_writer__init(struct ctf_writer *cw, const char *path)
{
	struct bt_ctf_writer		*writer;
	struct bt_ctf_stream_class	*stream_class;
	struct bt_ctf_stream		*stream;
	struct bt_ctf_clock		*clock;

	/* CTF writer */
	writer = bt_ctf_writer_create(path);
	if (!writer)
		goto err;

	cw->writer = writer;

	/* CTF clock */
	clock = bt_ctf_clock_create("perf_clock");
	if (!clock) {
		pr("Failed to create CTF clock.\n");
		goto err_cleanup;
	}

	cw->clock = clock;

	if (ctf_writer__setup_clock(cw)) {
		pr("Failed to setup CTF clock.\n");
		goto err_cleanup;
	}

	/* CTF stream class */
	stream_class = bt_ctf_stream_class_create("perf_stream");
	if (!stream_class) {
		pr("Failed to create CTF stream class.\n");
		goto err_cleanup;
	}

	cw->stream_class = stream_class;

	/* CTF clock stream setup */
	if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
		pr("Failed to assign CTF clock to stream class.\n");
		goto err_cleanup;
	}

	if (ctf_writer__init_data(cw))
		goto err_cleanup;

	/* CTF stream instance */
	stream = bt_ctf_writer_create_stream(writer, stream_class);
	if (!stream) {
		pr("Failed to create CTF stream.\n");
		goto err_cleanup;
	}

	cw->stream = stream;

	/* CTF clock writer setup */
	if (bt_ctf_writer_add_clock(writer, clock)) {
		pr("Failed to assign CTF clock to writer.\n");
		goto err_cleanup;
	}

	return 0;

err_cleanup:
	ctf_writer__cleanup(cw);
err:
	pr_err("Failed to setup CTF writer.\n");
	return -1;
}

int bt_convert__perf2ctf(const char *input, const char *path)
{
	struct perf_session *session;
	struct perf_data_file file = {
		.path = input,
		.mode = PERF_DATA_MODE_READ,
	};
	struct convert c = {
		.tool = {
			.sample          = process_sample_event,
			.mmap            = perf_event__process_mmap,
			.mmap2           = perf_event__process_mmap2,
			.comm            = perf_event__process_comm,
			.exit            = perf_event__process_exit,
			.fork            = perf_event__process_fork,
			.lost            = perf_event__process_lost,
			.tracing_data    = perf_event__process_tracing_data,
			.build_id        = perf_event__process_build_id,
			.ordered_events  = true,
			.ordering_requires_timestamps = true,
		},
	};
	struct ctf_writer *cw = &c.writer;
	int err = -1;

	/* CTF writer */
	if (ctf_writer__init(cw, path))
		return -1;

	/* perf.data session */
	session = perf_session__new(&file, 0, NULL);
	if (!session)
		goto free_writer;

	/* CTF writer env/clock setup  */
	if (ctf_writer__setup_env(cw, session))
		goto free_session;

	/* CTF events setup */
	if (setup_events(cw, session))
		goto free_session;

	err = perf_session__process_events(session, &c.tool);
	if (!err)
		err = bt_ctf_stream_flush(cw->stream);

	fprintf(stderr,
		"[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
		file.path, path);

	fprintf(stderr,
		"[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n",
		(double) c.events_size / 1024.0 / 1024.0,
		c.events_count);

	/* its all good */
free_session:
	perf_session__delete(session);

free_writer:
	ctf_writer__cleanup(cw);
	return err;
}