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perf data: Support converting data from bpf_perf_event_output()
[deliverable/linux.git] / tools / perf / util / data-convert-bt.c
CommitLineData
edbe9817
JO		 1/*
2 * CTF writing support via babeltrace.
3 *
4 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
5 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
6 *
7 * Released under the GPL v2. (and only v2, not any later version)
8 */
9
10#include <linux/compiler.h>
11#include <babeltrace/ctf-writer/writer.h>
12#include <babeltrace/ctf-writer/clock.h>
13#include <babeltrace/ctf-writer/stream.h>
14#include <babeltrace/ctf-writer/event.h>
15#include <babeltrace/ctf-writer/event-types.h>
16#include <babeltrace/ctf-writer/event-fields.h>
e0a7cce5 17#include <babeltrace/ctf-ir/utils.h>
edbe9817
JO		 18#include <babeltrace/ctf/events.h>
19#include <traceevent/event-parse.h>
20#include "asm/bug.h"
21#include "data-convert-bt.h"
22#include "session.h"
23#include "util.h"
24#include "debug.h"
25#include "tool.h"
26#include "evlist.h"
27#include "evsel.h"
28#include "machine.h"
29
30#define pr_N(n, fmt, ...) \
31 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
32
33#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
34#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
35
36#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
37
38struct evsel_priv {
39 struct bt_ctf_event_class *event_class;
40};
41
90e129ff
SAS		 42#define MAX_CPUS 4096
43
44struct ctf_stream {
45 struct bt_ctf_stream *stream;
46 int cpu;
89e5fa88 47 u32 count;
90e129ff
SAS		 48};
49
edbe9817
JO		 50struct ctf_writer {
51 /* writer primitives */
90e129ff
SAS		 52 struct bt_ctf_writer *writer;
53 struct ctf_stream **stream;
54 int stream_cnt;
55 struct bt_ctf_stream_class *stream_class;
56 struct bt_ctf_clock *clock;
edbe9817
JO		 57
58 /* data types */
59 union {
60 struct {
61 struct bt_ctf_field_type *s64;
62 struct bt_ctf_field_type *u64;
63 struct bt_ctf_field_type *s32;
64 struct bt_ctf_field_type *u32;
65 struct bt_ctf_field_type *string;
26812d46 66 struct bt_ctf_field_type *u32_hex;
edbe9817
JO		 67 struct bt_ctf_field_type *u64_hex;
68 };
69 struct bt_ctf_field_type *array[6];
70 } data;
71};
72
73struct convert {
74 struct perf_tool tool;
75 struct ctf_writer writer;
76
77 u64 events_size;
78 u64 events_count;
8fa46753
JO		 79
80 /* Ordered events configured queue size. */
81 u64 queue_size;
edbe9817
JO		 82};
83
84static int value_set(struct bt_ctf_field_type *type,
85 struct bt_ctf_event *event,
86 const char *name, u64 val)
87{
88 struct bt_ctf_field *field;
89 bool sign = bt_ctf_field_type_integer_get_signed(type);
90 int ret;
91
92 field = bt_ctf_field_create(type);
93 if (!field) {
94 pr_err("failed to create a field %s\n", name);
95 return -1;
96 }
97
98 if (sign) {
99 ret = bt_ctf_field_signed_integer_set_value(field, val);
100 if (ret) {
101 pr_err("failed to set field value %s\n", name);
102 goto err;
103 }
104 } else {
105 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
106 if (ret) {
107 pr_err("failed to set field value %s\n", name);
108 goto err;
109 }
110 }
111
112 ret = bt_ctf_event_set_payload(event, name, field);
113 if (ret) {
114 pr_err("failed to set payload %s\n", name);
115 goto err;
116 }
117
118 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
119
120err:
121 bt_ctf_field_put(field);
122 return ret;
123}
124
125#define __FUNC_VALUE_SET(_name, _val_type) \
126static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
127 struct bt_ctf_event *event, \
128 const char *name, \
129 _val_type val) \
130{ \
131 struct bt_ctf_field_type *type = cw->data._name; \
132 return value_set(type, event, name, (u64) val); \
133}
134
135#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
136
137FUNC_VALUE_SET(s32)
138FUNC_VALUE_SET(u32)
139FUNC_VALUE_SET(s64)
140FUNC_VALUE_SET(u64)
141__FUNC_VALUE_SET(u64_hex, u64)
142
69364727
SAS		 143static struct bt_ctf_field_type*
144get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
145{
146 unsigned long flags = field->flags;
147
148 if (flags & FIELD_IS_STRING)
149 return cw->data.string;
150
151 if (!(flags & FIELD_IS_SIGNED)) {
152 /* unsigned long are mostly pointers */
153 if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER)
154 return cw->data.u64_hex;
155 }
156
157 if (flags & FIELD_IS_SIGNED) {
158 if (field->size == 8)
159 return cw->data.s64;
160 else
161 return cw->data.s32;
162 }
163
164 if (field->size == 8)
165 return cw->data.u64;
166 else
167 return cw->data.u32;
168}
169
d4ae4213
WN		 170static unsigned long long adjust_signedness(unsigned long long value_int, int size)
171{
172 unsigned long long value_mask;
173
174 /*
175 * value_mask = (1 << (size * 8 - 1)) - 1.
176 * Directly set value_mask for code readers.
177 */
178 switch (size) {
179 case 1:
180 value_mask = 0x7fULL;
181 break;
182 case 2:
183 value_mask = 0x7fffULL;
184 break;
185 case 4:
186 value_mask = 0x7fffffffULL;
187 break;
188 case 8:
189 /*
190 * For 64 bit value, return it self. There is no need
191 * to fill high bit.
192 */
193 /* Fall through */
194 default:
195 /* BUG! */
196 return value_int;
197 }
198
199 /* If it is a positive value, don't adjust. */
200 if ((value_int & (~0ULL - value_mask)) == 0)
201 return value_int;
202
203 /* Fill upper part of value_int with 1 to make it a negative long long. */
204 return (value_int & value_mask) | ~value_mask;
205}
206
69364727
SAS		 207static int add_tracepoint_field_value(struct ctf_writer *cw,
208 struct bt_ctf_event_class *event_class,
209 struct bt_ctf_event *event,
210 struct perf_sample *sample,
211 struct format_field *fmtf)
212{
213 struct bt_ctf_field_type *type;
214 struct bt_ctf_field *array_field;
215 struct bt_ctf_field *field;
216 const char *name = fmtf->name;
217 void *data = sample->raw_data;
69364727
SAS		 218 unsigned long flags = fmtf->flags;
219 unsigned int n_items;
220 unsigned int i;
221 unsigned int offset;
222 unsigned int len;
223 int ret;
224
e0a7cce5 225 name = fmtf->alias;
69364727
SAS		 226 offset = fmtf->offset;
227 len = fmtf->size;
228 if (flags & FIELD_IS_STRING)
229 flags &= ~FIELD_IS_ARRAY;
230
231 if (flags & FIELD_IS_DYNAMIC) {
232 unsigned long long tmp_val;
233
234 tmp_val = pevent_read_number(fmtf->event->pevent,
235 data + offset, len);
236 offset = tmp_val;
237 len = offset >> 16;
238 offset &= 0xffff;
239 }
240
241 if (flags & FIELD_IS_ARRAY) {
242
243 type = bt_ctf_event_class_get_field_by_name(
244 event_class, name);
245 array_field = bt_ctf_field_create(type);
246 bt_ctf_field_type_put(type);
247 if (!array_field) {
248 pr_err("Failed to create array type %s\n", name);
249 return -1;
250 }
251
252 len = fmtf->size / fmtf->arraylen;
253 n_items = fmtf->arraylen;
254 } else {
255 n_items = 1;
256 array_field = NULL;
257 }
258
259 type = get_tracepoint_field_type(cw, fmtf);
260
261 for (i = 0; i < n_items; i++) {
69364727
SAS		 262 if (flags & FIELD_IS_ARRAY)
263 field = bt_ctf_field_array_get_field(array_field, i);
264 else
265 field = bt_ctf_field_create(type);
266
267 if (!field) {
268 pr_err("failed to create a field %s\n", name);
269 return -1;
270 }
271
272 if (flags & FIELD_IS_STRING)
273 ret = bt_ctf_field_string_set_value(field,
274 data + offset + i * len);
d4ae4213
WN		 275 else {
276 unsigned long long value_int;
277
278 value_int = pevent_read_number(
279 fmtf->event->pevent,
280 data + offset + i * len, len);
281
282 if (!(flags & FIELD_IS_SIGNED))
283 ret = bt_ctf_field_unsigned_integer_set_value(
284 field, value_int);
285 else
286 ret = bt_ctf_field_signed_integer_set_value(
287 field, adjust_signedness(value_int, len));
288 }
289
69364727
SAS		 290 if (ret) {
291 pr_err("failed to set file value %s\n", name);
292 goto err_put_field;
293 }
294 if (!(flags & FIELD_IS_ARRAY)) {
295 ret = bt_ctf_event_set_payload(event, name, field);
296 if (ret) {
297 pr_err("failed to set payload %s\n", name);
298 goto err_put_field;
299 }
300 }
301 bt_ctf_field_put(field);
302 }
303 if (flags & FIELD_IS_ARRAY) {
304 ret = bt_ctf_event_set_payload(event, name, array_field);
305 if (ret) {
306 pr_err("Failed add payload array %s\n", name);
307 return -1;
308 }
309 bt_ctf_field_put(array_field);
310 }
311 return 0;
312
313err_put_field:
314 bt_ctf_field_put(field);
315 return -1;
316}
317
318static int add_tracepoint_fields_values(struct ctf_writer *cw,
319 struct bt_ctf_event_class *event_class,
320 struct bt_ctf_event *event,
321 struct format_field *fields,
322 struct perf_sample *sample)
323{
324 struct format_field *field;
325 int ret;
326
327 for (field = fields; field; field = field->next) {
328 ret = add_tracepoint_field_value(cw, event_class, event, sample,
329 field);
330 if (ret)
331 return -1;
332 }
333 return 0;
334}
335
336static int add_tracepoint_values(struct ctf_writer *cw,
337 struct bt_ctf_event_class *event_class,
338 struct bt_ctf_event *event,
339 struct perf_evsel *evsel,
340 struct perf_sample *sample)
341{
342 struct format_field *common_fields = evsel->tp_format->format.common_fields;
343 struct format_field *fields = evsel->tp_format->format.fields;
344 int ret;
345
346 ret = add_tracepoint_fields_values(cw, event_class, event,
347 common_fields, sample);
348 if (!ret)
349 ret = add_tracepoint_fields_values(cw, event_class, event,
350 fields, sample);
351
352 return ret;
353}
354
6122d57e
WN		 355static int
356add_bpf_output_values(struct bt_ctf_event_class *event_class,
357 struct bt_ctf_event *event,
358 struct perf_sample *sample)
359{
360 struct bt_ctf_field_type *len_type, *seq_type;
361 struct bt_ctf_field *len_field, *seq_field;
362 unsigned int raw_size = sample->raw_size;
363 unsigned int nr_elements = raw_size / sizeof(u32);
364 unsigned int i;
365 int ret;
366
367 if (nr_elements * sizeof(u32) != raw_size)
368 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %lu bytes\n",
369 raw_size, nr_elements * sizeof(u32) - raw_size);
370
371 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
372 len_field = bt_ctf_field_create(len_type);
373 if (!len_field) {
374 pr_err("failed to create 'raw_len' for bpf output event\n");
375 ret = -1;
376 goto put_len_type;
377 }
378
379 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
380 if (ret) {
381 pr_err("failed to set field value for raw_len\n");
382 goto put_len_field;
383 }
384 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
385 if (ret) {
386 pr_err("failed to set payload to raw_len\n");
387 goto put_len_field;
388 }
389
390 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
391 seq_field = bt_ctf_field_create(seq_type);
392 if (!seq_field) {
393 pr_err("failed to create 'raw_data' for bpf output event\n");
394 ret = -1;
395 goto put_seq_type;
396 }
397
398 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
399 if (ret) {
400 pr_err("failed to set length of 'raw_data'\n");
401 goto put_seq_field;
402 }
403
404 for (i = 0; i < nr_elements; i++) {
405 struct bt_ctf_field *elem_field =
406 bt_ctf_field_sequence_get_field(seq_field, i);
407
408 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
409 ((u32 *)(sample->raw_data))[i]);
410
411 bt_ctf_field_put(elem_field);
412 if (ret) {
413 pr_err("failed to set raw_data[%d]\n", i);
414 goto put_seq_field;
415 }
416 }
417
418 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
419 if (ret)
420 pr_err("failed to set payload for raw_data\n");
421
422put_seq_field:
423 bt_ctf_field_put(seq_field);
424put_seq_type:
425 bt_ctf_field_type_put(seq_type);
426put_len_field:
427 bt_ctf_field_put(len_field);
428put_len_type:
429 bt_ctf_field_type_put(len_type);
430 return ret;
431}
432
edbe9817
JO		 433static int add_generic_values(struct ctf_writer *cw,
434 struct bt_ctf_event *event,
435 struct perf_evsel *evsel,
436 struct perf_sample *sample)
437{
438 u64 type = evsel->attr.sample_type;
439 int ret;
440
441 /*
442 * missing:
443 * PERF_SAMPLE_TIME - not needed as we have it in
444 * ctf event header
445 * PERF_SAMPLE_READ - TODO
446 * PERF_SAMPLE_CALLCHAIN - TODO
447 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
448 * PERF_SAMPLE_BRANCH_STACK - TODO
449 * PERF_SAMPLE_REGS_USER - TODO
450 * PERF_SAMPLE_STACK_USER - TODO
451 */
452
453 if (type & PERF_SAMPLE_IP) {
54cf776a 454 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
edbe9817
JO		 455 if (ret)
456 return -1;
457 }
458
459 if (type & PERF_SAMPLE_TID) {
54cf776a 460 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
edbe9817
JO		 461 if (ret)
462 return -1;
463
54cf776a 464 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
edbe9817
JO		 465 if (ret)
466 return -1;
467 }
468
469 if ((type & PERF_SAMPLE_ID) ||
470 (type & PERF_SAMPLE_IDENTIFIER)) {
54cf776a 471 ret = value_set_u64(cw, event, "perf_id", sample->id);
edbe9817
JO		 472 if (ret)
473 return -1;
474 }
475
476 if (type & PERF_SAMPLE_STREAM_ID) {
54cf776a 477 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
edbe9817
JO		 478 if (ret)
479 return -1;
480 }
481
edbe9817 482 if (type & PERF_SAMPLE_PERIOD) {
54cf776a 483 ret = value_set_u64(cw, event, "perf_period", sample->period);
edbe9817
JO		 484 if (ret)
485 return -1;
486 }
487
488 if (type & PERF_SAMPLE_WEIGHT) {
54cf776a 489 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
edbe9817
JO		 490 if (ret)
491 return -1;
492 }
493
494 if (type & PERF_SAMPLE_DATA_SRC) {
54cf776a
SAS		 495 ret = value_set_u64(cw, event, "perf_data_src",
496 sample->data_src);
edbe9817
JO		 497 if (ret)
498 return -1;
499 }
500
501 if (type & PERF_SAMPLE_TRANSACTION) {
54cf776a
SAS		 502 ret = value_set_u64(cw, event, "perf_transaction",
503 sample->transaction);
edbe9817
JO		 504 if (ret)
505 return -1;
506 }
507
508 return 0;
509}
510
90e129ff
SAS		 511static int ctf_stream__flush(struct ctf_stream *cs)
512{
513 int err = 0;
514
515 if (cs) {
516 err = bt_ctf_stream_flush(cs->stream);
517 if (err)
518 pr_err("CTF stream %d flush failed\n", cs->cpu);
519
89e5fa88
JO		 520 pr("Flush stream for cpu %d (%u samples)\n",
521 cs->cpu, cs->count);
522
523 cs->count = 0;
90e129ff
SAS		 524 }
525
526 return err;
527}
528
529static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
530{
531 struct ctf_stream *cs;
532 struct bt_ctf_field *pkt_ctx = NULL;
533 struct bt_ctf_field *cpu_field = NULL;
534 struct bt_ctf_stream *stream = NULL;
535 int ret;
536
537 cs = zalloc(sizeof(*cs));
538 if (!cs) {
539 pr_err("Failed to allocate ctf stream\n");
540 return NULL;
541 }
542
543 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
544 if (!stream) {
545 pr_err("Failed to create CTF stream\n");
546 goto out;
547 }
548
549 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
550 if (!pkt_ctx) {
551 pr_err("Failed to obtain packet context\n");
552 goto out;
553 }
554
555 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
556 bt_ctf_field_put(pkt_ctx);
557 if (!cpu_field) {
558 pr_err("Failed to obtain cpu field\n");
559 goto out;
560 }
561
562 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
563 if (ret) {
564 pr_err("Failed to update CPU number\n");
565 goto out;
566 }
567
568 bt_ctf_field_put(cpu_field);
569
570 cs->cpu = cpu;
571 cs->stream = stream;
572 return cs;
573
574out:
575 if (cpu_field)
576 bt_ctf_field_put(cpu_field);
577 if (stream)
578 bt_ctf_stream_put(stream);
579
580 free(cs);
581 return NULL;
582}
583
584static void ctf_stream__delete(struct ctf_stream *cs)
585{
586 if (cs) {
587 bt_ctf_stream_put(cs->stream);
588 free(cs);
589 }
590}
591
592static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
593{
594 struct ctf_stream *cs = cw->stream[cpu];
595
596 if (!cs) {
597 cs = ctf_stream__create(cw, cpu);
598 cw->stream[cpu] = cs;
599 }
600
601 return cs;
602}
603
604static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
605 struct perf_evsel *evsel)
606{
607 int cpu = 0;
608
609 if (evsel->attr.sample_type & PERF_SAMPLE_CPU)
610 cpu = sample->cpu;
611
612 if (cpu > cw->stream_cnt) {
613 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
614 cpu, cw->stream_cnt);
615 cpu = 0;
616 }
617
618 return cpu;
619}
620
89e5fa88
JO		 621#define STREAM_FLUSH_COUNT 100000
622
623/*
624 * Currently we have no other way to determine the
625 * time for the stream flush other than keep track
626 * of the number of events and check it against
627 * threshold.
628 */
629static bool is_flush_needed(struct ctf_stream *cs)
630{
631 return cs->count >= STREAM_FLUSH_COUNT;
632}
633
edbe9817
JO		 634static int process_sample_event(struct perf_tool *tool,
635 union perf_event *_event __maybe_unused,
636 struct perf_sample *sample,
637 struct perf_evsel *evsel,
638 struct machine *machine __maybe_unused)
639{
640 struct convert *c = container_of(tool, struct convert, tool);
641 struct evsel_priv *priv = evsel->priv;
642 struct ctf_writer *cw = &c->writer;
90e129ff 643 struct ctf_stream *cs;
edbe9817
JO		 644 struct bt_ctf_event_class *event_class;
645 struct bt_ctf_event *event;
646 int ret;
647
648 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
649 return 0;
650
651 event_class = priv->event_class;
652
653 /* update stats */
654 c->events_count++;
655 c->events_size += _event->header.size;
656
657 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
658
659 event = bt_ctf_event_create(event_class);
660 if (!event) {
661 pr_err("Failed to create an CTF event\n");
662 return -1;
663 }
664
665 bt_ctf_clock_set_time(cw->clock, sample->time);
666
667 ret = add_generic_values(cw, event, evsel, sample);
668 if (ret)
669 return -1;
670
69364727
SAS		 671 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
672 ret = add_tracepoint_values(cw, event_class, event,
673 evsel, sample);
674 if (ret)
675 return -1;
676 }
677
6122d57e
WN		 678 if (perf_evsel__is_bpf_output(evsel)) {
679 ret = add_bpf_output_values(event_class, event, sample);
680 if (ret)
681 return -1;
682 }
683
90e129ff 684 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
89e5fa88
JO		 685 if (cs) {
686 if (is_flush_needed(cs))
687 ctf_stream__flush(cs);
688
689 cs->count++;
90e129ff 690 bt_ctf_stream_append_event(cs->stream, event);
89e5fa88 691 }
90e129ff 692
edbe9817 693 bt_ctf_event_put(event);
90e129ff 694 return cs ? 0 : -1;
edbe9817
JO		 695}
696
e0a7cce5
WN		 697/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
698static char *change_name(char *name, char *orig_name, int dup)
699{
700 char *new_name = NULL;
701 size_t len;
702
703 if (!name)
704 name = orig_name;
705
706 if (dup >= 10)
707 goto out;
708 /*
709 * Add '_' prefix to potential keywork. According to
710 * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
711 * futher CTF spec updating may require us to use '$'.
712 */
713 if (dup < 0)
714 len = strlen(name) + sizeof("_");
715 else
716 len = strlen(orig_name) + sizeof("_dupl_X");
717
718 new_name = malloc(len);
719 if (!new_name)
720 goto out;
721
722 if (dup < 0)
723 snprintf(new_name, len, "_%s", name);
724 else
725 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
726
727out:
728 if (name != orig_name)
729 free(name);
730 return new_name;
731}
732
733static int event_class_add_field(struct bt_ctf_event_class *event_class,
734 struct bt_ctf_field_type *type,
735 struct format_field *field)
736{
737 struct bt_ctf_field_type *t = NULL;
738 char *name;
739 int dup = 1;
740 int ret;
741
742 /* alias was already assigned */
743 if (field->alias != field->name)
744 return bt_ctf_event_class_add_field(event_class, type,
745 (char *)field->alias);
746
747 name = field->name;
748
749 /* If 'name' is a keywork, add prefix. */
750 if (bt_ctf_validate_identifier(name))
751 name = change_name(name, field->name, -1);
752
753 if (!name) {
754 pr_err("Failed to fix invalid identifier.");
755 return -1;
756 }
757 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
758 bt_ctf_field_type_put(t);
759 name = change_name(name, field->name, dup++);
760 if (!name) {
761 pr_err("Failed to create dup name for '%s'\n", field->name);
762 return -1;
763 }
764 }
765
766 ret = bt_ctf_event_class_add_field(event_class, type, name);
767 if (!ret)
768 field->alias = name;
769
770 return ret;
771}
772
69364727
SAS		 773static int add_tracepoint_fields_types(struct ctf_writer *cw,
774 struct format_field *fields,
775 struct bt_ctf_event_class *event_class)
776{
777 struct format_field *field;
778 int ret;
779
780 for (field = fields; field; field = field->next) {
781 struct bt_ctf_field_type *type;
782 unsigned long flags = field->flags;
783
784 pr2(" field '%s'\n", field->name);
785
786 type = get_tracepoint_field_type(cw, field);
787 if (!type)
788 return -1;
789
790 /*
791 * A string is an array of chars. For this we use the string
792 * type and don't care that it is an array. What we don't
793 * support is an array of strings.
794 */
795 if (flags & FIELD_IS_STRING)
796 flags &= ~FIELD_IS_ARRAY;
797
798 if (flags & FIELD_IS_ARRAY)
799 type = bt_ctf_field_type_array_create(type, field->arraylen);
800
e0a7cce5 801 ret = event_class_add_field(event_class, type, field);
69364727
SAS		 802
803 if (flags & FIELD_IS_ARRAY)
804 bt_ctf_field_type_put(type);
805
806 if (ret) {
e0a7cce5
WN		 807 pr_err("Failed to add field '%s': %d\n",
808 field->name, ret);
69364727
SAS		 809 return -1;
810 }
811 }
812
813 return 0;
814}
815
816static int add_tracepoint_types(struct ctf_writer *cw,
817 struct perf_evsel *evsel,
818 struct bt_ctf_event_class *class)
819{
820 struct format_field *common_fields = evsel->tp_format->format.common_fields;
821 struct format_field *fields = evsel->tp_format->format.fields;
822 int ret;
823
824 ret = add_tracepoint_fields_types(cw, common_fields, class);
825 if (!ret)
826 ret = add_tracepoint_fields_types(cw, fields, class);
827
828 return ret;
829}
830
6122d57e
WN		 831static int add_bpf_output_types(struct ctf_writer *cw,
832 struct bt_ctf_event_class *class)
833{
834 struct bt_ctf_field_type *len_type = cw->data.u32;
835 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
836 struct bt_ctf_field_type *seq_type;
837 int ret;
838
839 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
840 if (ret)
841 return ret;
842
843 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
844 if (!seq_type)
845 return -1;
846
847 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
848}
849
edbe9817
JO		 850static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
851 struct bt_ctf_event_class *event_class)
852{
853 u64 type = evsel->attr.sample_type;
854
855 /*
856 * missing:
857 * PERF_SAMPLE_TIME - not needed as we have it in
858 * ctf event header
859 * PERF_SAMPLE_READ - TODO
860 * PERF_SAMPLE_CALLCHAIN - TODO
6122d57e
WN		 861 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
862 * are handled separately
edbe9817
JO		 863 * PERF_SAMPLE_BRANCH_STACK - TODO
864 * PERF_SAMPLE_REGS_USER - TODO
865 * PERF_SAMPLE_STACK_USER - TODO
866 */
867
868#define ADD_FIELD(cl, t, n) \
869 do { \
870 pr2(" field '%s'\n", n); \
871 if (bt_ctf_event_class_add_field(cl, t, n)) { \
e0a7cce5 872 pr_err("Failed to add field '%s';\n", n); \
edbe9817
JO		 873 return -1; \
874 } \
875 } while (0)
876
877 if (type & PERF_SAMPLE_IP)
54cf776a 878 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
edbe9817
JO		 879
880 if (type & PERF_SAMPLE_TID) {
54cf776a
SAS		 881 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
882 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
edbe9817
JO		 883 }
884
885 if ((type & PERF_SAMPLE_ID) ||
886 (type & PERF_SAMPLE_IDENTIFIER))
54cf776a 887 ADD_FIELD(event_class, cw->data.u64, "perf_id");
edbe9817
JO		 888
889 if (type & PERF_SAMPLE_STREAM_ID)
54cf776a 890 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
edbe9817 891
edbe9817 892 if (type & PERF_SAMPLE_PERIOD)
54cf776a 893 ADD_FIELD(event_class, cw->data.u64, "perf_period");
edbe9817
JO		 894
895 if (type & PERF_SAMPLE_WEIGHT)
54cf776a 896 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
edbe9817
JO		 897
898 if (type & PERF_SAMPLE_DATA_SRC)
54cf776a 899 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
edbe9817
JO		 900
901 if (type & PERF_SAMPLE_TRANSACTION)
54cf776a 902 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
edbe9817
JO		 903
904#undef ADD_FIELD
905 return 0;
906}
907
908static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
909{
910 struct bt_ctf_event_class *event_class;
911 struct evsel_priv *priv;
912 const char *name = perf_evsel__name(evsel);
913 int ret;
914
915 pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
916
917 event_class = bt_ctf_event_class_create(name);
918 if (!event_class)
919 return -1;
920
921 ret = add_generic_types(cw, evsel, event_class);
922 if (ret)
923 goto err;
924
69364727
SAS		 925 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
926 ret = add_tracepoint_types(cw, evsel, event_class);
927 if (ret)
928 goto err;
929 }
930
6122d57e
WN		 931 if (perf_evsel__is_bpf_output(evsel)) {
932 ret = add_bpf_output_types(cw, event_class);
933 if (ret)
934 goto err;
935 }
936
edbe9817
JO		 937 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
938 if (ret) {
939 pr("Failed to add event class into stream.\n");
940 goto err;
941 }
942
943 priv = malloc(sizeof(*priv));
944 if (!priv)
945 goto err;
946
947 priv->event_class = event_class;
948 evsel->priv = priv;
949 return 0;
950
951err:
952 bt_ctf_event_class_put(event_class);
953 pr_err("Failed to add event '%s'.\n", name);
954 return -1;
955}
956
957static int setup_events(struct ctf_writer *cw, struct perf_session *session)
958{
959 struct perf_evlist *evlist = session->evlist;
960 struct perf_evsel *evsel;
961 int ret;
962
963 evlist__for_each(evlist, evsel) {
964 ret = add_event(cw, evsel);
965 if (ret)
966 return ret;
967 }
968 return 0;
969}
970
5141d735
WN		 971static void cleanup_events(struct perf_session *session)
972{
973 struct perf_evlist *evlist = session->evlist;
974 struct perf_evsel *evsel;
975
976 evlist__for_each(evlist, evsel) {
977 struct evsel_priv *priv;
978
979 priv = evsel->priv;
980 bt_ctf_event_class_put(priv->event_class);
981 zfree(&evsel->priv);
982 }
983
984 perf_evlist__delete(evlist);
985 session->evlist = NULL;
986}
987
90e129ff
SAS		 988static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
989{
990 struct ctf_stream **stream;
991 struct perf_header *ph = &session->header;
992 int ncpus;
993
994 /*
995 * Try to get the number of cpus used in the data file,
996 * if not present fallback to the MAX_CPUS.
997 */
998 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
999
1000 stream = zalloc(sizeof(*stream) * ncpus);
1001 if (!stream) {
1002 pr_err("Failed to allocate streams.\n");
1003 return -ENOMEM;
1004 }
1005
1006 cw->stream = stream;
1007 cw->stream_cnt = ncpus;
1008 return 0;
1009}
1010
1011static void free_streams(struct ctf_writer *cw)
1012{
1013 int cpu;
1014
1015 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1016 ctf_stream__delete(cw->stream[cpu]);
1017
1018 free(cw->stream);
1019}
1020
edbe9817
JO		 1021static int ctf_writer__setup_env(struct ctf_writer *cw,
1022 struct perf_session *session)
1023{
1024 struct perf_header *header = &session->header;
1025 struct bt_ctf_writer *writer = cw->writer;
1026
1027#define ADD(__n, __v) \
1028do { \
1029 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1030 return -1; \
1031} while (0)
1032
1033 ADD("host", header->env.hostname);
1034 ADD("sysname", "Linux");
1035 ADD("release", header->env.os_release);
1036 ADD("version", header->env.version);
1037 ADD("machine", header->env.arch);
1038 ADD("domain", "kernel");
1039 ADD("tracer_name", "perf");
1040
1041#undef ADD
1042 return 0;
1043}
1044
1045static int ctf_writer__setup_clock(struct ctf_writer *cw)
1046{
1047 struct bt_ctf_clock *clock = cw->clock;
1048
1049 bt_ctf_clock_set_description(clock, "perf clock");
1050
1051#define SET(__n, __v) \
1052do { \
1053 if (bt_ctf_clock_set_##__n(clock, __v)) \
1054 return -1; \
1055} while (0)
1056
1057 SET(frequency, 1000000000);
1058 SET(offset_s, 0);
1059 SET(offset, 0);
1060 SET(precision, 10);
1061 SET(is_absolute, 0);
1062
1063#undef SET
1064 return 0;
1065}
1066
1067static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1068{
1069 struct bt_ctf_field_type *type;
1070
1071 type = bt_ctf_field_type_integer_create(size);
1072 if (!type)
1073 return NULL;
1074
1075 if (sign &&
1076 bt_ctf_field_type_integer_set_signed(type, 1))
1077 goto err;
1078
1079 if (hex &&
1080 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1081 goto err;
1082
1083 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1084 size, sign ? "un" : "", hex ? "hex" : "");
1085 return type;
1086
1087err:
1088 bt_ctf_field_type_put(type);
1089 return NULL;
1090}
1091
1092static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1093{
1094 unsigned int i;
1095
1096 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1097 bt_ctf_field_type_put(cw->data.array[i]);
1098}
1099
1100static int ctf_writer__init_data(struct ctf_writer *cw)
1101{
1102#define CREATE_INT_TYPE(type, size, sign, hex) \
1103do { \
1104 (type) = create_int_type(size, sign, hex); \
1105 if (!(type)) \
1106 goto err; \
1107} while (0)
1108
1109 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1110 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1111 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1112 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
26812d46 1113 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
edbe9817
JO		 1114 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1115
1116 cw->data.string = bt_ctf_field_type_string_create();
1117 if (cw->data.string)
1118 return 0;
1119
1120err:
1121 ctf_writer__cleanup_data(cw);
1122 pr_err("Failed to create data types.\n");
1123 return -1;
1124}
1125
1126static void ctf_writer__cleanup(struct ctf_writer *cw)
1127{
1128 ctf_writer__cleanup_data(cw);
1129
1130 bt_ctf_clock_put(cw->clock);
90e129ff 1131 free_streams(cw);
edbe9817
JO		 1132 bt_ctf_stream_class_put(cw->stream_class);
1133 bt_ctf_writer_put(cw->writer);
1134
1135 /* and NULL all the pointers */
1136 memset(cw, 0, sizeof(*cw));
1137}
1138
1139static int ctf_writer__init(struct ctf_writer *cw, const char *path)
1140{
1141 struct bt_ctf_writer *writer;
1142 struct bt_ctf_stream_class *stream_class;
edbe9817 1143 struct bt_ctf_clock *clock;
90e129ff
SAS		 1144 struct bt_ctf_field_type *pkt_ctx_type;
1145 int ret;
edbe9817
JO		 1146
1147 /* CTF writer */
1148 writer = bt_ctf_writer_create(path);
1149 if (!writer)
1150 goto err;
1151
1152 cw->writer = writer;
1153
1154 /* CTF clock */
1155 clock = bt_ctf_clock_create("perf_clock");
1156 if (!clock) {
1157 pr("Failed to create CTF clock.\n");
1158 goto err_cleanup;
1159 }
1160
1161 cw->clock = clock;
1162
1163 if (ctf_writer__setup_clock(cw)) {
1164 pr("Failed to setup CTF clock.\n");
1165 goto err_cleanup;
1166 }
1167
1168 /* CTF stream class */
1169 stream_class = bt_ctf_stream_class_create("perf_stream");
1170 if (!stream_class) {
1171 pr("Failed to create CTF stream class.\n");
1172 goto err_cleanup;
1173 }
1174
1175 cw->stream_class = stream_class;
1176
1177 /* CTF clock stream setup */
1178 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1179 pr("Failed to assign CTF clock to stream class.\n");
1180 goto err_cleanup;
1181 }
1182
1183 if (ctf_writer__init_data(cw))
1184 goto err_cleanup;
1185
90e129ff
SAS		 1186 /* Add cpu_id for packet context */
1187 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1188 if (!pkt_ctx_type)
edbe9817 1189 goto err_cleanup;
edbe9817 1190
90e129ff
SAS		 1191 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1192 bt_ctf_field_type_put(pkt_ctx_type);
1193 if (ret)
1194 goto err_cleanup;
edbe9817
JO		 1195
1196 /* CTF clock writer setup */
1197 if (bt_ctf_writer_add_clock(writer, clock)) {
1198 pr("Failed to assign CTF clock to writer.\n");
1199 goto err_cleanup;
1200 }
1201
1202 return 0;
1203
1204err_cleanup:
1205 ctf_writer__cleanup(cw);
1206err:
1207 pr_err("Failed to setup CTF writer.\n");
1208 return -1;
1209}
1210
90e129ff
SAS		 1211static int ctf_writer__flush_streams(struct ctf_writer *cw)
1212{
1213 int cpu, ret = 0;
1214
1215 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1216 ret = ctf_stream__flush(cw->stream[cpu]);
1217
1218 return ret;
1219}
1220
8fa46753
JO		 1221static int convert__config(const char *var, const char *value, void *cb)
1222{
1223 struct convert *c = cb;
1224
1225 if (!strcmp(var, "convert.queue-size")) {
1226 c->queue_size = perf_config_u64(var, value);
1227 return 0;
1228 }
1229
b8cbb349 1230 return 0;
8fa46753
JO		 1231}
1232
bd05954b 1233int bt_convert__perf2ctf(const char *input, const char *path, bool force)
edbe9817
JO		 1234{
1235 struct perf_session *session;
1236 struct perf_data_file file = {
1237 .path = input,
1238 .mode = PERF_DATA_MODE_READ,
bd05954b 1239 .force = force,
edbe9817
JO		 1240 };
1241 struct convert c = {
1242 .tool = {
1243 .sample = process_sample_event,
1244 .mmap = perf_event__process_mmap,
1245 .mmap2 = perf_event__process_mmap2,
1246 .comm = perf_event__process_comm,
1247 .exit = perf_event__process_exit,
1248 .fork = perf_event__process_fork,
1249 .lost = perf_event__process_lost,
1250 .tracing_data = perf_event__process_tracing_data,
1251 .build_id = perf_event__process_build_id,
1252 .ordered_events = true,
1253 .ordering_requires_timestamps = true,
1254 },
1255 };
1256 struct ctf_writer *cw = &c.writer;
1257 int err = -1;
1258
8fa46753
JO		 1259 perf_config(convert__config, &c);
1260
edbe9817
JO		 1261 /* CTF writer */
1262 if (ctf_writer__init(cw, path))
1263 return -1;
1264
1265 /* perf.data session */
b7b61cbe 1266 session = perf_session__new(&file, 0, &c.tool);
edbe9817
JO		 1267 if (!session)
1268 goto free_writer;
1269
8fa46753
JO		 1270 if (c.queue_size) {
1271 ordered_events__set_alloc_size(&session->ordered_events,
1272 c.queue_size);
1273 }
1274
edbe9817
JO		 1275 /* CTF writer env/clock setup */
1276 if (ctf_writer__setup_env(cw, session))
1277 goto free_session;
1278
1279 /* CTF events setup */
1280 if (setup_events(cw, session))
1281 goto free_session;
1282
90e129ff
SAS		 1283 if (setup_streams(cw, session))
1284 goto free_session;
1285
b7b61cbe 1286 err = perf_session__process_events(session);
edbe9817 1287 if (!err)
90e129ff 1288 err = ctf_writer__flush_streams(cw);
c2141055
HK		 1289 else
1290 pr_err("Error during conversion.\n");
edbe9817
JO		 1291
1292 fprintf(stderr,
1293 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1294 file.path, path);
1295
1296 fprintf(stderr,
1297 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n",
1298 (double) c.events_size / 1024.0 / 1024.0,
1299 c.events_count);
1300
5141d735 1301 cleanup_events(session);
edbe9817 1302 perf_session__delete(session);
c2141055 1303 ctf_writer__cleanup(cw);
edbe9817 1304
c2141055
HK		 1305 return err;
1306
1307free_session:
1308 perf_session__delete(session);
edbe9817
JO		 1309free_writer:
1310 ctf_writer__cleanup(cw);
c2141055 1311 pr_err("Error during conversion setup.\n");
edbe9817
JO		 1312 return err;
1313}
Linux kernel - Deliverables
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