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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 <errno.h>
11#include <inttypes.h>
12#include <linux/compiler.h>
13#include <linux/kernel.h>
14#include <babeltrace/ctf-writer/writer.h>
15#include <babeltrace/ctf-writer/clock.h>
16#include <babeltrace/ctf-writer/stream.h>
17#include <babeltrace/ctf-writer/event.h>
18#include <babeltrace/ctf-writer/event-types.h>
19#include <babeltrace/ctf-writer/event-fields.h>
20#include <babeltrace/ctf-ir/utils.h>
21#include <babeltrace/ctf/events.h>
22#include <traceevent/event-parse.h>
23#include "asm/bug.h"
24#include "data-convert-bt.h"
25#include "session.h"
26#include "util.h"
27#include "debug.h"
28#include "tool.h"
29#include "evlist.h"
30#include "evsel.h"
31#include "machine.h"
32#include "config.h"
33#include "sane_ctype.h"
34
35#define pr_N(n, fmt, ...) \
36 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
37
38#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
39#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
40
41#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
42
43struct evsel_priv {
44 struct bt_ctf_event_class *event_class;
45};
46
47#define MAX_CPUS 4096
48
49struct ctf_stream {
50 struct bt_ctf_stream *stream;
51 int cpu;
52 u32 count;
53};
54
55struct ctf_writer {
56 /* writer primitives */
57 struct bt_ctf_writer *writer;
58 struct ctf_stream **stream;
59 int stream_cnt;
60 struct bt_ctf_stream_class *stream_class;
61 struct bt_ctf_clock *clock;
62
63 /* data types */
64 union {
65 struct {
66 struct bt_ctf_field_type *s64;
67 struct bt_ctf_field_type *u64;
68 struct bt_ctf_field_type *s32;
69 struct bt_ctf_field_type *u32;
70 struct bt_ctf_field_type *string;
71 struct bt_ctf_field_type *u32_hex;
72 struct bt_ctf_field_type *u64_hex;
73 };
74 struct bt_ctf_field_type *array[6];
75 } data;
76 struct bt_ctf_event_class *comm_class;
77 struct bt_ctf_event_class *exit_class;
78 struct bt_ctf_event_class *fork_class;
79 struct bt_ctf_event_class *mmap_class;
80 struct bt_ctf_event_class *mmap2_class;
81};
82
83struct convert {
84 struct perf_tool tool;
85 struct ctf_writer writer;
86
87 u64 events_size;
88 u64 events_count;
89 u64 non_sample_count;
90
91 /* Ordered events configured queue size. */
92 u64 queue_size;
93};
94
95static int value_set(struct bt_ctf_field_type *type,
96 struct bt_ctf_event *event,
97 const char *name, u64 val)
98{
99 struct bt_ctf_field *field;
100 bool sign = bt_ctf_field_type_integer_get_signed(type);
101 int ret;
102
103 field = bt_ctf_field_create(type);
104 if (!field) {
105 pr_err("failed to create a field %s\n", name);
106 return -1;
107 }
108
109 if (sign) {
110 ret = bt_ctf_field_signed_integer_set_value(field, val);
111 if (ret) {
112 pr_err("failed to set field value %s\n", name);
113 goto err;
114 }
115 } else {
116 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
117 if (ret) {
118 pr_err("failed to set field value %s\n", name);
119 goto err;
120 }
121 }
122
123 ret = bt_ctf_event_set_payload(event, name, field);
124 if (ret) {
125 pr_err("failed to set payload %s\n", name);
126 goto err;
127 }
128
129 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
130
131err:
132 bt_ctf_field_put(field);
133 return ret;
134}
135
136#define __FUNC_VALUE_SET(_name, _val_type) \
137static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
138 struct bt_ctf_event *event, \
139 const char *name, \
140 _val_type val) \
141{ \
142 struct bt_ctf_field_type *type = cw->data._name; \
143 return value_set(type, event, name, (u64) val); \
144}
145
146#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
147
148FUNC_VALUE_SET(s32)
149FUNC_VALUE_SET(u32)
150FUNC_VALUE_SET(s64)
151FUNC_VALUE_SET(u64)
152__FUNC_VALUE_SET(u64_hex, u64)
153
154static int string_set_value(struct bt_ctf_field *field, const char *string);
155static __maybe_unused int
156value_set_string(struct ctf_writer *cw, struct bt_ctf_event *event,
157 const char *name, const char *string)
158{
159 struct bt_ctf_field_type *type = cw->data.string;
160 struct bt_ctf_field *field;
161 int ret = 0;
162
163 field = bt_ctf_field_create(type);
164 if (!field) {
165 pr_err("failed to create a field %s\n", name);
166 return -1;
167 }
168
169 ret = string_set_value(field, string);
170 if (ret) {
171 pr_err("failed to set value %s\n", name);
172 goto err_put_field;
173 }
174
175 ret = bt_ctf_event_set_payload(event, name, field);
176 if (ret)
177 pr_err("failed to set payload %s\n", name);
178
179err_put_field:
180 bt_ctf_field_put(field);
181 return ret;
182}
183
184static struct bt_ctf_field_type*
185get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
186{
187 unsigned long flags = field->flags;
188
189 if (flags & FIELD_IS_STRING)
190 return cw->data.string;
191
192 if (!(flags & FIELD_IS_SIGNED)) {
193 /* unsigned long are mostly pointers */
194 if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER)
195 return cw->data.u64_hex;
196 }
197
198 if (flags & FIELD_IS_SIGNED) {
199 if (field->size == 8)
200 return cw->data.s64;
201 else
202 return cw->data.s32;
203 }
204
205 if (field->size == 8)
206 return cw->data.u64;
207 else
208 return cw->data.u32;
209}
210
211static unsigned long long adjust_signedness(unsigned long long value_int, int size)
212{
213 unsigned long long value_mask;
214
215 /*
216 * value_mask = (1 << (size * 8 - 1)) - 1.
217 * Directly set value_mask for code readers.
218 */
219 switch (size) {
220 case 1:
221 value_mask = 0x7fULL;
222 break;
223 case 2:
224 value_mask = 0x7fffULL;
225 break;
226 case 4:
227 value_mask = 0x7fffffffULL;
228 break;
229 case 8:
230 /*
231 * For 64 bit value, return it self. There is no need
232 * to fill high bit.
233 */
234 /* Fall through */
235 default:
236 /* BUG! */
237 return value_int;
238 }
239
240 /* If it is a positive value, don't adjust. */
241 if ((value_int & (~0ULL - value_mask)) == 0)
242 return value_int;
243
244 /* Fill upper part of value_int with 1 to make it a negative long long. */
245 return (value_int & value_mask) | ~value_mask;
246}
247
248static int string_set_value(struct bt_ctf_field *field, const char *string)
249{
250 char *buffer = NULL;
251 size_t len = strlen(string), i, p;
252 int err;
253
254 for (i = p = 0; i < len; i++, p++) {
255 if (isprint(string[i])) {
256 if (!buffer)
257 continue;
258 buffer[p] = string[i];
259 } else {
260 char numstr[5];
261
262 snprintf(numstr, sizeof(numstr), "\\x%02x",
263 (unsigned int)(string[i]) & 0xff);
264
265 if (!buffer) {
266 buffer = zalloc(i + (len - i) * 4 + 2);
267 if (!buffer) {
268 pr_err("failed to set unprintable string '%s'\n", string);
269 return bt_ctf_field_string_set_value(field, "UNPRINTABLE-STRING");
270 }
271 if (i > 0)
272 strncpy(buffer, string, i);
273 }
274 strncat(buffer + p, numstr, 4);
275 p += 3;
276 }
277 }
278
279 if (!buffer)
280 return bt_ctf_field_string_set_value(field, string);
281 err = bt_ctf_field_string_set_value(field, buffer);
282 free(buffer);
283 return err;
284}
285
286static int add_tracepoint_field_value(struct ctf_writer *cw,
287 struct bt_ctf_event_class *event_class,
288 struct bt_ctf_event *event,
289 struct perf_sample *sample,
290 struct format_field *fmtf)
291{
292 struct bt_ctf_field_type *type;
293 struct bt_ctf_field *array_field;
294 struct bt_ctf_field *field;
295 const char *name = fmtf->name;
296 void *data = sample->raw_data;
297 unsigned long flags = fmtf->flags;
298 unsigned int n_items;
299 unsigned int i;
300 unsigned int offset;
301 unsigned int len;
302 int ret;
303
304 name = fmtf->alias;
305 offset = fmtf->offset;
306 len = fmtf->size;
307 if (flags & FIELD_IS_STRING)
308 flags &= ~FIELD_IS_ARRAY;
309
310 if (flags & FIELD_IS_DYNAMIC) {
311 unsigned long long tmp_val;
312
313 tmp_val = pevent_read_number(fmtf->event->pevent,
314 data + offset, len);
315 offset = tmp_val;
316 len = offset >> 16;
317 offset &= 0xffff;
318 }
319
320 if (flags & FIELD_IS_ARRAY) {
321
322 type = bt_ctf_event_class_get_field_by_name(
323 event_class, name);
324 array_field = bt_ctf_field_create(type);
325 bt_ctf_field_type_put(type);
326 if (!array_field) {
327 pr_err("Failed to create array type %s\n", name);
328 return -1;
329 }
330
331 len = fmtf->size / fmtf->arraylen;
332 n_items = fmtf->arraylen;
333 } else {
334 n_items = 1;
335 array_field = NULL;
336 }
337
338 type = get_tracepoint_field_type(cw, fmtf);
339
340 for (i = 0; i < n_items; i++) {
341 if (flags & FIELD_IS_ARRAY)
342 field = bt_ctf_field_array_get_field(array_field, i);
343 else
344 field = bt_ctf_field_create(type);
345
346 if (!field) {
347 pr_err("failed to create a field %s\n", name);
348 return -1;
349 }
350
351 if (flags & FIELD_IS_STRING)
352 ret = string_set_value(field, data + offset + i * len);
353 else {
354 unsigned long long value_int;
355
356 value_int = pevent_read_number(
357 fmtf->event->pevent,
358 data + offset + i * len, len);
359
360 if (!(flags & FIELD_IS_SIGNED))
361 ret = bt_ctf_field_unsigned_integer_set_value(
362 field, value_int);
363 else
364 ret = bt_ctf_field_signed_integer_set_value(
365 field, adjust_signedness(value_int, len));
366 }
367
368 if (ret) {
369 pr_err("failed to set file value %s\n", name);
370 goto err_put_field;
371 }
372 if (!(flags & FIELD_IS_ARRAY)) {
373 ret = bt_ctf_event_set_payload(event, name, field);
374 if (ret) {
375 pr_err("failed to set payload %s\n", name);
376 goto err_put_field;
377 }
378 }
379 bt_ctf_field_put(field);
380 }
381 if (flags & FIELD_IS_ARRAY) {
382 ret = bt_ctf_event_set_payload(event, name, array_field);
383 if (ret) {
384 pr_err("Failed add payload array %s\n", name);
385 return -1;
386 }
387 bt_ctf_field_put(array_field);
388 }
389 return 0;
390
391err_put_field:
392 bt_ctf_field_put(field);
393 return -1;
394}
395
396static int add_tracepoint_fields_values(struct ctf_writer *cw,
397 struct bt_ctf_event_class *event_class,
398 struct bt_ctf_event *event,
399 struct format_field *fields,
400 struct perf_sample *sample)
401{
402 struct format_field *field;
403 int ret;
404
405 for (field = fields; field; field = field->next) {
406 ret = add_tracepoint_field_value(cw, event_class, event, sample,
407 field);
408 if (ret)
409 return -1;
410 }
411 return 0;
412}
413
414static int add_tracepoint_values(struct ctf_writer *cw,
415 struct bt_ctf_event_class *event_class,
416 struct bt_ctf_event *event,
417 struct perf_evsel *evsel,
418 struct perf_sample *sample)
419{
420 struct format_field *common_fields = evsel->tp_format->format.common_fields;
421 struct format_field *fields = evsel->tp_format->format.fields;
422 int ret;
423
424 ret = add_tracepoint_fields_values(cw, event_class, event,
425 common_fields, sample);
426 if (!ret)
427 ret = add_tracepoint_fields_values(cw, event_class, event,
428 fields, sample);
429
430 return ret;
431}
432
433static int
434add_bpf_output_values(struct bt_ctf_event_class *event_class,
435 struct bt_ctf_event *event,
436 struct perf_sample *sample)
437{
438 struct bt_ctf_field_type *len_type, *seq_type;
439 struct bt_ctf_field *len_field, *seq_field;
440 unsigned int raw_size = sample->raw_size;
441 unsigned int nr_elements = raw_size / sizeof(u32);
442 unsigned int i;
443 int ret;
444
445 if (nr_elements * sizeof(u32) != raw_size)
446 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %zu bytes\n",
447 raw_size, nr_elements * sizeof(u32) - raw_size);
448
449 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
450 len_field = bt_ctf_field_create(len_type);
451 if (!len_field) {
452 pr_err("failed to create 'raw_len' for bpf output event\n");
453 ret = -1;
454 goto put_len_type;
455 }
456
457 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
458 if (ret) {
459 pr_err("failed to set field value for raw_len\n");
460 goto put_len_field;
461 }
462 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
463 if (ret) {
464 pr_err("failed to set payload to raw_len\n");
465 goto put_len_field;
466 }
467
468 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
469 seq_field = bt_ctf_field_create(seq_type);
470 if (!seq_field) {
471 pr_err("failed to create 'raw_data' for bpf output event\n");
472 ret = -1;
473 goto put_seq_type;
474 }
475
476 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
477 if (ret) {
478 pr_err("failed to set length of 'raw_data'\n");
479 goto put_seq_field;
480 }
481
482 for (i = 0; i < nr_elements; i++) {
483 struct bt_ctf_field *elem_field =
484 bt_ctf_field_sequence_get_field(seq_field, i);
485
486 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
487 ((u32 *)(sample->raw_data))[i]);
488
489 bt_ctf_field_put(elem_field);
490 if (ret) {
491 pr_err("failed to set raw_data[%d]\n", i);
492 goto put_seq_field;
493 }
494 }
495
496 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
497 if (ret)
498 pr_err("failed to set payload for raw_data\n");
499
500put_seq_field:
501 bt_ctf_field_put(seq_field);
502put_seq_type:
503 bt_ctf_field_type_put(seq_type);
504put_len_field:
505 bt_ctf_field_put(len_field);
506put_len_type:
507 bt_ctf_field_type_put(len_type);
508 return ret;
509}
510
511static int
512add_callchain_output_values(struct bt_ctf_event_class *event_class,
513 struct bt_ctf_event *event,
514 struct ip_callchain *callchain)
515{
516 struct bt_ctf_field_type *len_type, *seq_type;
517 struct bt_ctf_field *len_field, *seq_field;
518 unsigned int nr_elements = callchain->nr;
519 unsigned int i;
520 int ret;
521
522 len_type = bt_ctf_event_class_get_field_by_name(
523 event_class, "perf_callchain_size");
524 len_field = bt_ctf_field_create(len_type);
525 if (!len_field) {
526 pr_err("failed to create 'perf_callchain_size' for callchain output event\n");
527 ret = -1;
528 goto put_len_type;
529 }
530
531 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
532 if (ret) {
533 pr_err("failed to set field value for perf_callchain_size\n");
534 goto put_len_field;
535 }
536 ret = bt_ctf_event_set_payload(event, "perf_callchain_size", len_field);
537 if (ret) {
538 pr_err("failed to set payload to perf_callchain_size\n");
539 goto put_len_field;
540 }
541
542 seq_type = bt_ctf_event_class_get_field_by_name(
543 event_class, "perf_callchain");
544 seq_field = bt_ctf_field_create(seq_type);
545 if (!seq_field) {
546 pr_err("failed to create 'perf_callchain' for callchain output event\n");
547 ret = -1;
548 goto put_seq_type;
549 }
550
551 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
552 if (ret) {
553 pr_err("failed to set length of 'perf_callchain'\n");
554 goto put_seq_field;
555 }
556
557 for (i = 0; i < nr_elements; i++) {
558 struct bt_ctf_field *elem_field =
559 bt_ctf_field_sequence_get_field(seq_field, i);
560
561 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
562 ((u64 *)(callchain->ips))[i]);
563
564 bt_ctf_field_put(elem_field);
565 if (ret) {
566 pr_err("failed to set callchain[%d]\n", i);
567 goto put_seq_field;
568 }
569 }
570
571 ret = bt_ctf_event_set_payload(event, "perf_callchain", seq_field);
572 if (ret)
573 pr_err("failed to set payload for raw_data\n");
574
575put_seq_field:
576 bt_ctf_field_put(seq_field);
577put_seq_type:
578 bt_ctf_field_type_put(seq_type);
579put_len_field:
580 bt_ctf_field_put(len_field);
581put_len_type:
582 bt_ctf_field_type_put(len_type);
583 return ret;
584}
585
586static int add_generic_values(struct ctf_writer *cw,
587 struct bt_ctf_event *event,
588 struct perf_evsel *evsel,
589 struct perf_sample *sample)
590{
591 u64 type = evsel->attr.sample_type;
592 int ret;
593
594 /*
595 * missing:
596 * PERF_SAMPLE_TIME - not needed as we have it in
597 * ctf event header
598 * PERF_SAMPLE_READ - TODO
599 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
600 * PERF_SAMPLE_BRANCH_STACK - TODO
601 * PERF_SAMPLE_REGS_USER - TODO
602 * PERF_SAMPLE_STACK_USER - TODO
603 */
604
605 if (type & PERF_SAMPLE_IP) {
606 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
607 if (ret)
608 return -1;
609 }
610
611 if (type & PERF_SAMPLE_TID) {
612 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
613 if (ret)
614 return -1;
615
616 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
617 if (ret)
618 return -1;
619 }
620
621 if ((type & PERF_SAMPLE_ID) ||
622 (type & PERF_SAMPLE_IDENTIFIER)) {
623 ret = value_set_u64(cw, event, "perf_id", sample->id);
624 if (ret)
625 return -1;
626 }
627
628 if (type & PERF_SAMPLE_STREAM_ID) {
629 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
630 if (ret)
631 return -1;
632 }
633
634 if (type & PERF_SAMPLE_PERIOD) {
635 ret = value_set_u64(cw, event, "perf_period", sample->period);
636 if (ret)
637 return -1;
638 }
639
640 if (type & PERF_SAMPLE_WEIGHT) {
641 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
642 if (ret)
643 return -1;
644 }
645
646 if (type & PERF_SAMPLE_DATA_SRC) {
647 ret = value_set_u64(cw, event, "perf_data_src",
648 sample->data_src);
649 if (ret)
650 return -1;
651 }
652
653 if (type & PERF_SAMPLE_TRANSACTION) {
654 ret = value_set_u64(cw, event, "perf_transaction",
655 sample->transaction);
656 if (ret)
657 return -1;
658 }
659
660 return 0;
661}
662
663static int ctf_stream__flush(struct ctf_stream *cs)
664{
665 int err = 0;
666
667 if (cs) {
668 err = bt_ctf_stream_flush(cs->stream);
669 if (err)
670 pr_err("CTF stream %d flush failed\n", cs->cpu);
671
672 pr("Flush stream for cpu %d (%u samples)\n",
673 cs->cpu, cs->count);
674
675 cs->count = 0;
676 }
677
678 return err;
679}
680
681static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
682{
683 struct ctf_stream *cs;
684 struct bt_ctf_field *pkt_ctx = NULL;
685 struct bt_ctf_field *cpu_field = NULL;
686 struct bt_ctf_stream *stream = NULL;
687 int ret;
688
689 cs = zalloc(sizeof(*cs));
690 if (!cs) {
691 pr_err("Failed to allocate ctf stream\n");
692 return NULL;
693 }
694
695 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
696 if (!stream) {
697 pr_err("Failed to create CTF stream\n");
698 goto out;
699 }
700
701 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
702 if (!pkt_ctx) {
703 pr_err("Failed to obtain packet context\n");
704 goto out;
705 }
706
707 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
708 bt_ctf_field_put(pkt_ctx);
709 if (!cpu_field) {
710 pr_err("Failed to obtain cpu field\n");
711 goto out;
712 }
713
714 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
715 if (ret) {
716 pr_err("Failed to update CPU number\n");
717 goto out;
718 }
719
720 bt_ctf_field_put(cpu_field);
721
722 cs->cpu = cpu;
723 cs->stream = stream;
724 return cs;
725
726out:
727 if (cpu_field)
728 bt_ctf_field_put(cpu_field);
729 if (stream)
730 bt_ctf_stream_put(stream);
731
732 free(cs);
733 return NULL;
734}
735
736static void ctf_stream__delete(struct ctf_stream *cs)
737{
738 if (cs) {
739 bt_ctf_stream_put(cs->stream);
740 free(cs);
741 }
742}
743
744static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
745{
746 struct ctf_stream *cs = cw->stream[cpu];
747
748 if (!cs) {
749 cs = ctf_stream__create(cw, cpu);
750 cw->stream[cpu] = cs;
751 }
752
753 return cs;
754}
755
756static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
757 struct perf_evsel *evsel)
758{
759 int cpu = 0;
760
761 if (evsel->attr.sample_type & PERF_SAMPLE_CPU)
762 cpu = sample->cpu;
763
764 if (cpu > cw->stream_cnt) {
765 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
766 cpu, cw->stream_cnt);
767 cpu = 0;
768 }
769
770 return cpu;
771}
772
773#define STREAM_FLUSH_COUNT 100000
774
775/*
776 * Currently we have no other way to determine the
777 * time for the stream flush other than keep track
778 * of the number of events and check it against
779 * threshold.
780 */
781static bool is_flush_needed(struct ctf_stream *cs)
782{
783 return cs->count >= STREAM_FLUSH_COUNT;
784}
785
786static int process_sample_event(struct perf_tool *tool,
787 union perf_event *_event,
788 struct perf_sample *sample,
789 struct perf_evsel *evsel,
790 struct machine *machine __maybe_unused)
791{
792 struct convert *c = container_of(tool, struct convert, tool);
793 struct evsel_priv *priv = evsel->priv;
794 struct ctf_writer *cw = &c->writer;
795 struct ctf_stream *cs;
796 struct bt_ctf_event_class *event_class;
797 struct bt_ctf_event *event;
798 int ret;
799 unsigned long type = evsel->attr.sample_type;
800
801 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
802 return 0;
803
804 event_class = priv->event_class;
805
806 /* update stats */
807 c->events_count++;
808 c->events_size += _event->header.size;
809
810 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
811
812 event = bt_ctf_event_create(event_class);
813 if (!event) {
814 pr_err("Failed to create an CTF event\n");
815 return -1;
816 }
817
818 bt_ctf_clock_set_time(cw->clock, sample->time);
819
820 ret = add_generic_values(cw, event, evsel, sample);
821 if (ret)
822 return -1;
823
824 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
825 ret = add_tracepoint_values(cw, event_class, event,
826 evsel, sample);
827 if (ret)
828 return -1;
829 }
830
831 if (type & PERF_SAMPLE_CALLCHAIN) {
832 ret = add_callchain_output_values(event_class,
833 event, sample->callchain);
834 if (ret)
835 return -1;
836 }
837
838 if (perf_evsel__is_bpf_output(evsel)) {
839 ret = add_bpf_output_values(event_class, event, sample);
840 if (ret)
841 return -1;
842 }
843
844 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
845 if (cs) {
846 if (is_flush_needed(cs))
847 ctf_stream__flush(cs);
848
849 cs->count++;
850 bt_ctf_stream_append_event(cs->stream, event);
851 }
852
853 bt_ctf_event_put(event);
854 return cs ? 0 : -1;
855}
856
857#define __NON_SAMPLE_SET_FIELD(_name, _type, _field) \
858do { \
859 ret = value_set_##_type(cw, event, #_field, _event->_name._field);\
860 if (ret) \
861 return -1; \
862} while(0)
863
864#define __FUNC_PROCESS_NON_SAMPLE(_name, body) \
865static int process_##_name##_event(struct perf_tool *tool, \
866 union perf_event *_event, \
867 struct perf_sample *sample, \
868 struct machine *machine) \
869{ \
870 struct convert *c = container_of(tool, struct convert, tool);\
871 struct ctf_writer *cw = &c->writer; \
872 struct bt_ctf_event_class *event_class = cw->_name##_class;\
873 struct bt_ctf_event *event; \
874 struct ctf_stream *cs; \
875 int ret; \
876 \
877 c->non_sample_count++; \
878 c->events_size += _event->header.size; \
879 event = bt_ctf_event_create(event_class); \
880 if (!event) { \
881 pr_err("Failed to create an CTF event\n"); \
882 return -1; \
883 } \
884 \
885 bt_ctf_clock_set_time(cw->clock, sample->time); \
886 body \
887 cs = ctf_stream(cw, 0); \
888 if (cs) { \
889 if (is_flush_needed(cs)) \
890 ctf_stream__flush(cs); \
891 \
892 cs->count++; \
893 bt_ctf_stream_append_event(cs->stream, event); \
894 } \
895 bt_ctf_event_put(event); \
896 \
897 return perf_event__process_##_name(tool, _event, sample, machine);\
898}
899
900__FUNC_PROCESS_NON_SAMPLE(comm,
901 __NON_SAMPLE_SET_FIELD(comm, u32, pid);
902 __NON_SAMPLE_SET_FIELD(comm, u32, tid);
903 __NON_SAMPLE_SET_FIELD(comm, string, comm);
904)
905__FUNC_PROCESS_NON_SAMPLE(fork,
906 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
907 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
908 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
909 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
910 __NON_SAMPLE_SET_FIELD(fork, u64, time);
911)
912
913__FUNC_PROCESS_NON_SAMPLE(exit,
914 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
915 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
916 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
917 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
918 __NON_SAMPLE_SET_FIELD(fork, u64, time);
919)
920__FUNC_PROCESS_NON_SAMPLE(mmap,
921 __NON_SAMPLE_SET_FIELD(mmap, u32, pid);
922 __NON_SAMPLE_SET_FIELD(mmap, u32, tid);
923 __NON_SAMPLE_SET_FIELD(mmap, u64_hex, start);
924 __NON_SAMPLE_SET_FIELD(mmap, string, filename);
925)
926__FUNC_PROCESS_NON_SAMPLE(mmap2,
927 __NON_SAMPLE_SET_FIELD(mmap2, u32, pid);
928 __NON_SAMPLE_SET_FIELD(mmap2, u32, tid);
929 __NON_SAMPLE_SET_FIELD(mmap2, u64_hex, start);
930 __NON_SAMPLE_SET_FIELD(mmap2, string, filename);
931)
932#undef __NON_SAMPLE_SET_FIELD
933#undef __FUNC_PROCESS_NON_SAMPLE
934
935/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
936static char *change_name(char *name, char *orig_name, int dup)
937{
938 char *new_name = NULL;
939 size_t len;
940
941 if (!name)
942 name = orig_name;
943
944 if (dup >= 10)
945 goto out;
946 /*
947 * Add '_' prefix to potential keywork. According to
948 * Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
949 * futher CTF spec updating may require us to use '$'.
950 */
951 if (dup < 0)
952 len = strlen(name) + sizeof("_");
953 else
954 len = strlen(orig_name) + sizeof("_dupl_X");
955
956 new_name = malloc(len);
957 if (!new_name)
958 goto out;
959
960 if (dup < 0)
961 snprintf(new_name, len, "_%s", name);
962 else
963 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
964
965out:
966 if (name != orig_name)
967 free(name);
968 return new_name;
969}
970
971static int event_class_add_field(struct bt_ctf_event_class *event_class,
972 struct bt_ctf_field_type *type,
973 struct format_field *field)
974{
975 struct bt_ctf_field_type *t = NULL;
976 char *name;
977 int dup = 1;
978 int ret;
979
980 /* alias was already assigned */
981 if (field->alias != field->name)
982 return bt_ctf_event_class_add_field(event_class, type,
983 (char *)field->alias);
984
985 name = field->name;
986
987 /* If 'name' is a keywork, add prefix. */
988 if (bt_ctf_validate_identifier(name))
989 name = change_name(name, field->name, -1);
990
991 if (!name) {
992 pr_err("Failed to fix invalid identifier.");
993 return -1;
994 }
995 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
996 bt_ctf_field_type_put(t);
997 name = change_name(name, field->name, dup++);
998 if (!name) {
999 pr_err("Failed to create dup name for '%s'\n", field->name);
1000 return -1;
1001 }
1002 }
1003
1004 ret = bt_ctf_event_class_add_field(event_class, type, name);
1005 if (!ret)
1006 field->alias = name;
1007
1008 return ret;
1009}
1010
1011static int add_tracepoint_fields_types(struct ctf_writer *cw,
1012 struct format_field *fields,
1013 struct bt_ctf_event_class *event_class)
1014{
1015 struct format_field *field;
1016 int ret;
1017
1018 for (field = fields; field; field = field->next) {
1019 struct bt_ctf_field_type *type;
1020 unsigned long flags = field->flags;
1021
1022 pr2(" field '%s'\n", field->name);
1023
1024 type = get_tracepoint_field_type(cw, field);
1025 if (!type)
1026 return -1;
1027
1028 /*
1029 * A string is an array of chars. For this we use the string
1030 * type and don't care that it is an array. What we don't
1031 * support is an array of strings.
1032 */
1033 if (flags & FIELD_IS_STRING)
1034 flags &= ~FIELD_IS_ARRAY;
1035
1036 if (flags & FIELD_IS_ARRAY)
1037 type = bt_ctf_field_type_array_create(type, field->arraylen);
1038
1039 ret = event_class_add_field(event_class, type, field);
1040
1041 if (flags & FIELD_IS_ARRAY)
1042 bt_ctf_field_type_put(type);
1043
1044 if (ret) {
1045 pr_err("Failed to add field '%s': %d\n",
1046 field->name, ret);
1047 return -1;
1048 }
1049 }
1050
1051 return 0;
1052}
1053
1054static int add_tracepoint_types(struct ctf_writer *cw,
1055 struct perf_evsel *evsel,
1056 struct bt_ctf_event_class *class)
1057{
1058 struct format_field *common_fields = evsel->tp_format->format.common_fields;
1059 struct format_field *fields = evsel->tp_format->format.fields;
1060 int ret;
1061
1062 ret = add_tracepoint_fields_types(cw, common_fields, class);
1063 if (!ret)
1064 ret = add_tracepoint_fields_types(cw, fields, class);
1065
1066 return ret;
1067}
1068
1069static int add_bpf_output_types(struct ctf_writer *cw,
1070 struct bt_ctf_event_class *class)
1071{
1072 struct bt_ctf_field_type *len_type = cw->data.u32;
1073 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
1074 struct bt_ctf_field_type *seq_type;
1075 int ret;
1076
1077 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
1078 if (ret)
1079 return ret;
1080
1081 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
1082 if (!seq_type)
1083 return -1;
1084
1085 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
1086}
1087
1088static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
1089 struct bt_ctf_event_class *event_class)
1090{
1091 u64 type = evsel->attr.sample_type;
1092
1093 /*
1094 * missing:
1095 * PERF_SAMPLE_TIME - not needed as we have it in
1096 * ctf event header
1097 * PERF_SAMPLE_READ - TODO
1098 * PERF_SAMPLE_CALLCHAIN - TODO
1099 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
1100 * are handled separately
1101 * PERF_SAMPLE_BRANCH_STACK - TODO
1102 * PERF_SAMPLE_REGS_USER - TODO
1103 * PERF_SAMPLE_STACK_USER - TODO
1104 */
1105
1106#define ADD_FIELD(cl, t, n) \
1107 do { \
1108 pr2(" field '%s'\n", n); \
1109 if (bt_ctf_event_class_add_field(cl, t, n)) { \
1110 pr_err("Failed to add field '%s';\n", n); \
1111 return -1; \
1112 } \
1113 } while (0)
1114
1115 if (type & PERF_SAMPLE_IP)
1116 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
1117
1118 if (type & PERF_SAMPLE_TID) {
1119 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
1120 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
1121 }
1122
1123 if ((type & PERF_SAMPLE_ID) ||
1124 (type & PERF_SAMPLE_IDENTIFIER))
1125 ADD_FIELD(event_class, cw->data.u64, "perf_id");
1126
1127 if (type & PERF_SAMPLE_STREAM_ID)
1128 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
1129
1130 if (type & PERF_SAMPLE_PERIOD)
1131 ADD_FIELD(event_class, cw->data.u64, "perf_period");
1132
1133 if (type & PERF_SAMPLE_WEIGHT)
1134 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
1135
1136 if (type & PERF_SAMPLE_DATA_SRC)
1137 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
1138
1139 if (type & PERF_SAMPLE_TRANSACTION)
1140 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
1141
1142 if (type & PERF_SAMPLE_CALLCHAIN) {
1143 ADD_FIELD(event_class, cw->data.u32, "perf_callchain_size");
1144 ADD_FIELD(event_class,
1145 bt_ctf_field_type_sequence_create(
1146 cw->data.u64_hex, "perf_callchain_size"),
1147 "perf_callchain");
1148 }
1149
1150#undef ADD_FIELD
1151 return 0;
1152}
1153
1154static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
1155{
1156 struct bt_ctf_event_class *event_class;
1157 struct evsel_priv *priv;
1158 const char *name = perf_evsel__name(evsel);
1159 int ret;
1160
1161 pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
1162
1163 event_class = bt_ctf_event_class_create(name);
1164 if (!event_class)
1165 return -1;
1166
1167 ret = add_generic_types(cw, evsel, event_class);
1168 if (ret)
1169 goto err;
1170
1171 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1172 ret = add_tracepoint_types(cw, evsel, event_class);
1173 if (ret)
1174 goto err;
1175 }
1176
1177 if (perf_evsel__is_bpf_output(evsel)) {
1178 ret = add_bpf_output_types(cw, event_class);
1179 if (ret)
1180 goto err;
1181 }
1182
1183 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
1184 if (ret) {
1185 pr("Failed to add event class into stream.\n");
1186 goto err;
1187 }
1188
1189 priv = malloc(sizeof(*priv));
1190 if (!priv)
1191 goto err;
1192
1193 priv->event_class = event_class;
1194 evsel->priv = priv;
1195 return 0;
1196
1197err:
1198 bt_ctf_event_class_put(event_class);
1199 pr_err("Failed to add event '%s'.\n", name);
1200 return -1;
1201}
1202
1203static int setup_events(struct ctf_writer *cw, struct perf_session *session)
1204{
1205 struct perf_evlist *evlist = session->evlist;
1206 struct perf_evsel *evsel;
1207 int ret;
1208
1209 evlist__for_each_entry(evlist, evsel) {
1210 ret = add_event(cw, evsel);
1211 if (ret)
1212 return ret;
1213 }
1214 return 0;
1215}
1216
1217#define __NON_SAMPLE_ADD_FIELD(t, n) \
1218 do { \
1219 pr2(" field '%s'\n", #n); \
1220 if (bt_ctf_event_class_add_field(event_class, cw->data.t, #n)) {\
1221 pr_err("Failed to add field '%s';\n", #n);\
1222 return -1; \
1223 } \
1224 } while(0)
1225
1226#define __FUNC_ADD_NON_SAMPLE_EVENT_CLASS(_name, body) \
1227static int add_##_name##_event(struct ctf_writer *cw) \
1228{ \
1229 struct bt_ctf_event_class *event_class; \
1230 int ret; \
1231 \
1232 pr("Adding "#_name" event\n"); \
1233 event_class = bt_ctf_event_class_create("perf_" #_name);\
1234 if (!event_class) \
1235 return -1; \
1236 body \
1237 \
1238 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);\
1239 if (ret) { \
1240 pr("Failed to add event class '"#_name"' into stream.\n");\
1241 return ret; \
1242 } \
1243 \
1244 cw->_name##_class = event_class; \
1245 bt_ctf_event_class_put(event_class); \
1246 return 0; \
1247}
1248
1249__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(comm,
1250 __NON_SAMPLE_ADD_FIELD(u32, pid);
1251 __NON_SAMPLE_ADD_FIELD(u32, tid);
1252 __NON_SAMPLE_ADD_FIELD(string, comm);
1253)
1254
1255__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(fork,
1256 __NON_SAMPLE_ADD_FIELD(u32, pid);
1257 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1258 __NON_SAMPLE_ADD_FIELD(u32, tid);
1259 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1260 __NON_SAMPLE_ADD_FIELD(u64, time);
1261)
1262
1263__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(exit,
1264 __NON_SAMPLE_ADD_FIELD(u32, pid);
1265 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1266 __NON_SAMPLE_ADD_FIELD(u32, tid);
1267 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1268 __NON_SAMPLE_ADD_FIELD(u64, time);
1269)
1270
1271__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap,
1272 __NON_SAMPLE_ADD_FIELD(u32, pid);
1273 __NON_SAMPLE_ADD_FIELD(u32, tid);
1274 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1275 __NON_SAMPLE_ADD_FIELD(string, filename);
1276)
1277
1278__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap2,
1279 __NON_SAMPLE_ADD_FIELD(u32, pid);
1280 __NON_SAMPLE_ADD_FIELD(u32, tid);
1281 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1282 __NON_SAMPLE_ADD_FIELD(string, filename);
1283)
1284#undef __NON_SAMPLE_ADD_FIELD
1285#undef __FUNC_ADD_NON_SAMPLE_EVENT_CLASS
1286
1287static int setup_non_sample_events(struct ctf_writer *cw,
1288 struct perf_session *session __maybe_unused)
1289{
1290 int ret;
1291
1292 ret = add_comm_event(cw);
1293 if (ret)
1294 return ret;
1295 ret = add_exit_event(cw);
1296 if (ret)
1297 return ret;
1298 ret = add_fork_event(cw);
1299 if (ret)
1300 return ret;
1301 ret = add_mmap_event(cw);
1302 if (ret)
1303 return ret;
1304 ret = add_mmap2_event(cw);
1305 if (ret)
1306 return ret;
1307 return 0;
1308}
1309
1310static void cleanup_events(struct perf_session *session)
1311{
1312 struct perf_evlist *evlist = session->evlist;
1313 struct perf_evsel *evsel;
1314
1315 evlist__for_each_entry(evlist, evsel) {
1316 struct evsel_priv *priv;
1317
1318 priv = evsel->priv;
1319 bt_ctf_event_class_put(priv->event_class);
1320 zfree(&evsel->priv);
1321 }
1322
1323 perf_evlist__delete(evlist);
1324 session->evlist = NULL;
1325}
1326
1327static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
1328{
1329 struct ctf_stream **stream;
1330 struct perf_header *ph = &session->header;
1331 int ncpus;
1332
1333 /*
1334 * Try to get the number of cpus used in the data file,
1335 * if not present fallback to the MAX_CPUS.
1336 */
1337 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
1338
1339 stream = zalloc(sizeof(*stream) * ncpus);
1340 if (!stream) {
1341 pr_err("Failed to allocate streams.\n");
1342 return -ENOMEM;
1343 }
1344
1345 cw->stream = stream;
1346 cw->stream_cnt = ncpus;
1347 return 0;
1348}
1349
1350static void free_streams(struct ctf_writer *cw)
1351{
1352 int cpu;
1353
1354 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1355 ctf_stream__delete(cw->stream[cpu]);
1356
1357 free(cw->stream);
1358}
1359
1360static int ctf_writer__setup_env(struct ctf_writer *cw,
1361 struct perf_session *session)
1362{
1363 struct perf_header *header = &session->header;
1364 struct bt_ctf_writer *writer = cw->writer;
1365
1366#define ADD(__n, __v) \
1367do { \
1368 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1369 return -1; \
1370} while (0)
1371
1372 ADD("host", header->env.hostname);
1373 ADD("sysname", "Linux");
1374 ADD("release", header->env.os_release);
1375 ADD("version", header->env.version);
1376 ADD("machine", header->env.arch);
1377 ADD("domain", "kernel");
1378 ADD("tracer_name", "perf");
1379
1380#undef ADD
1381 return 0;
1382}
1383
1384static int ctf_writer__setup_clock(struct ctf_writer *cw)
1385{
1386 struct bt_ctf_clock *clock = cw->clock;
1387
1388 bt_ctf_clock_set_description(clock, "perf clock");
1389
1390#define SET(__n, __v) \
1391do { \
1392 if (bt_ctf_clock_set_##__n(clock, __v)) \
1393 return -1; \
1394} while (0)
1395
1396 SET(frequency, 1000000000);
1397 SET(offset_s, 0);
1398 SET(offset, 0);
1399 SET(precision, 10);
1400 SET(is_absolute, 0);
1401
1402#undef SET
1403 return 0;
1404}
1405
1406static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1407{
1408 struct bt_ctf_field_type *type;
1409
1410 type = bt_ctf_field_type_integer_create(size);
1411 if (!type)
1412 return NULL;
1413
1414 if (sign &&
1415 bt_ctf_field_type_integer_set_signed(type, 1))
1416 goto err;
1417
1418 if (hex &&
1419 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1420 goto err;
1421
1422#if __BYTE_ORDER == __BIG_ENDIAN
1423 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
1424#else
1425 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);
1426#endif
1427
1428 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1429 size, sign ? "un" : "", hex ? "hex" : "");
1430 return type;
1431
1432err:
1433 bt_ctf_field_type_put(type);
1434 return NULL;
1435}
1436
1437static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1438{
1439 unsigned int i;
1440
1441 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1442 bt_ctf_field_type_put(cw->data.array[i]);
1443}
1444
1445static int ctf_writer__init_data(struct ctf_writer *cw)
1446{
1447#define CREATE_INT_TYPE(type, size, sign, hex) \
1448do { \
1449 (type) = create_int_type(size, sign, hex); \
1450 if (!(type)) \
1451 goto err; \
1452} while (0)
1453
1454 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1455 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1456 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1457 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
1458 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
1459 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1460
1461 cw->data.string = bt_ctf_field_type_string_create();
1462 if (cw->data.string)
1463 return 0;
1464
1465err:
1466 ctf_writer__cleanup_data(cw);
1467 pr_err("Failed to create data types.\n");
1468 return -1;
1469}
1470
1471static void ctf_writer__cleanup(struct ctf_writer *cw)
1472{
1473 ctf_writer__cleanup_data(cw);
1474
1475 bt_ctf_clock_put(cw->clock);
1476 free_streams(cw);
1477 bt_ctf_stream_class_put(cw->stream_class);
1478 bt_ctf_writer_put(cw->writer);
1479
1480 /* and NULL all the pointers */
1481 memset(cw, 0, sizeof(*cw));
1482}
1483
1484static int ctf_writer__init(struct ctf_writer *cw, const char *path)
1485{
1486 struct bt_ctf_writer *writer;
1487 struct bt_ctf_stream_class *stream_class;
1488 struct bt_ctf_clock *clock;
1489 struct bt_ctf_field_type *pkt_ctx_type;
1490 int ret;
1491
1492 /* CTF writer */
1493 writer = bt_ctf_writer_create(path);
1494 if (!writer)
1495 goto err;
1496
1497 cw->writer = writer;
1498
1499 /* CTF clock */
1500 clock = bt_ctf_clock_create("perf_clock");
1501 if (!clock) {
1502 pr("Failed to create CTF clock.\n");
1503 goto err_cleanup;
1504 }
1505
1506 cw->clock = clock;
1507
1508 if (ctf_writer__setup_clock(cw)) {
1509 pr("Failed to setup CTF clock.\n");
1510 goto err_cleanup;
1511 }
1512
1513 /* CTF stream class */
1514 stream_class = bt_ctf_stream_class_create("perf_stream");
1515 if (!stream_class) {
1516 pr("Failed to create CTF stream class.\n");
1517 goto err_cleanup;
1518 }
1519
1520 cw->stream_class = stream_class;
1521
1522 /* CTF clock stream setup */
1523 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1524 pr("Failed to assign CTF clock to stream class.\n");
1525 goto err_cleanup;
1526 }
1527
1528 if (ctf_writer__init_data(cw))
1529 goto err_cleanup;
1530
1531 /* Add cpu_id for packet context */
1532 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1533 if (!pkt_ctx_type)
1534 goto err_cleanup;
1535
1536 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1537 bt_ctf_field_type_put(pkt_ctx_type);
1538 if (ret)
1539 goto err_cleanup;
1540
1541 /* CTF clock writer setup */
1542 if (bt_ctf_writer_add_clock(writer, clock)) {
1543 pr("Failed to assign CTF clock to writer.\n");
1544 goto err_cleanup;
1545 }
1546
1547 return 0;
1548
1549err_cleanup:
1550 ctf_writer__cleanup(cw);
1551err:
1552 pr_err("Failed to setup CTF writer.\n");
1553 return -1;
1554}
1555
1556static int ctf_writer__flush_streams(struct ctf_writer *cw)
1557{
1558 int cpu, ret = 0;
1559
1560 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1561 ret = ctf_stream__flush(cw->stream[cpu]);
1562
1563 return ret;
1564}
1565
1566static int convert__config(const char *var, const char *value, void *cb)
1567{
1568 struct convert *c = cb;
1569
1570 if (!strcmp(var, "convert.queue-size"))
1571 return perf_config_u64(&c->queue_size, var, value);
1572
1573 return 0;
1574}
1575
1576int bt_convert__perf2ctf(const char *input, const char *path,
1577 struct perf_data_convert_opts *opts)
1578{
1579 struct perf_session *session;
1580 struct perf_data data = {
1581 .file.path = input,
1582 .mode = PERF_DATA_MODE_READ,
1583 .force = opts->force,
1584 };
1585 struct convert c = {
1586 .tool = {
1587 .sample = process_sample_event,
1588 .mmap = perf_event__process_mmap,
1589 .mmap2 = perf_event__process_mmap2,
1590 .comm = perf_event__process_comm,
1591 .exit = perf_event__process_exit,
1592 .fork = perf_event__process_fork,
1593 .lost = perf_event__process_lost,
1594 .tracing_data = perf_event__process_tracing_data,
1595 .build_id = perf_event__process_build_id,
1596 .namespaces = perf_event__process_namespaces,
1597 .ordered_events = true,
1598 .ordering_requires_timestamps = true,
1599 },
1600 };
1601 struct ctf_writer *cw = &c.writer;
1602 int err;
1603
1604 if (opts->all) {
1605 c.tool.comm = process_comm_event;
1606 c.tool.exit = process_exit_event;
1607 c.tool.fork = process_fork_event;
1608 c.tool.mmap = process_mmap_event;
1609 c.tool.mmap2 = process_mmap2_event;
1610 }
1611
1612 err = perf_config(convert__config, &c);
1613 if (err)
1614 return err;
1615
1616 /* CTF writer */
1617 if (ctf_writer__init(cw, path))
1618 return -1;
1619
1620 err = -1;
1621 /* perf.data session */
1622 session = perf_session__new(&data, 0, &c.tool);
1623 if (!session)
1624 goto free_writer;
1625
1626 if (c.queue_size) {
1627 ordered_events__set_alloc_size(&session->ordered_events,
1628 c.queue_size);
1629 }
1630
1631 /* CTF writer env/clock setup */
1632 if (ctf_writer__setup_env(cw, session))
1633 goto free_session;
1634
1635 /* CTF events setup */
1636 if (setup_events(cw, session))
1637 goto free_session;
1638
1639 if (opts->all && setup_non_sample_events(cw, session))
1640 goto free_session;
1641
1642 if (setup_streams(cw, session))
1643 goto free_session;
1644
1645 err = perf_session__process_events(session);
1646 if (!err)
1647 err = ctf_writer__flush_streams(cw);
1648 else
1649 pr_err("Error during conversion.\n");
1650
1651 fprintf(stderr,
1652 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1653 data.file.path, path);
1654
1655 fprintf(stderr,
1656 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples",
1657 (double) c.events_size / 1024.0 / 1024.0,
1658 c.events_count);
1659
1660 if (!c.non_sample_count)
1661 fprintf(stderr, ") ]\n");
1662 else
1663 fprintf(stderr, ", %" PRIu64 " non-samples) ]\n", c.non_sample_count);
1664
1665 cleanup_events(session);
1666 perf_session__delete(session);
1667 ctf_writer__cleanup(cw);
1668
1669 return err;
1670
1671free_session:
1672 perf_session__delete(session);
1673free_writer:
1674 ctf_writer__cleanup(cw);
1675 pr_err("Error during conversion setup.\n");
1676 return err;
1677}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * CTF writing support via babeltrace.
4 *
5 * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
6 * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
7 */
8
9#include <errno.h>
10#include <inttypes.h>
11#include <linux/compiler.h>
12#include <linux/kernel.h>
13#include <linux/zalloc.h>
14#include <babeltrace/ctf-writer/writer.h>
15#include <babeltrace/ctf-writer/clock.h>
16#include <babeltrace/ctf-writer/stream.h>
17#include <babeltrace/ctf-writer/event.h>
18#include <babeltrace/ctf-writer/event-types.h>
19#include <babeltrace/ctf-writer/event-fields.h>
20#include <babeltrace/ctf-ir/utils.h>
21#include <babeltrace/ctf/events.h>
22#include <traceevent/event-parse.h>
23#include "asm/bug.h"
24#include "data-convert.h"
25#include "session.h"
26#include "debug.h"
27#include "tool.h"
28#include "evlist.h"
29#include "evsel.h"
30#include "machine.h"
31#include "config.h"
32#include <linux/ctype.h>
33#include <linux/err.h>
34#include <linux/time64.h>
35#include "util.h"
36#include "clockid.h"
37
38#define pr_N(n, fmt, ...) \
39 eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
40
41#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
42#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
43
44#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
45
46struct evsel_priv {
47 struct bt_ctf_event_class *event_class;
48};
49
50#define MAX_CPUS 4096
51
52struct ctf_stream {
53 struct bt_ctf_stream *stream;
54 int cpu;
55 u32 count;
56};
57
58struct ctf_writer {
59 /* writer primitives */
60 struct bt_ctf_writer *writer;
61 struct ctf_stream **stream;
62 int stream_cnt;
63 struct bt_ctf_stream_class *stream_class;
64 struct bt_ctf_clock *clock;
65
66 /* data types */
67 union {
68 struct {
69 struct bt_ctf_field_type *s64;
70 struct bt_ctf_field_type *u64;
71 struct bt_ctf_field_type *s32;
72 struct bt_ctf_field_type *u32;
73 struct bt_ctf_field_type *string;
74 struct bt_ctf_field_type *u32_hex;
75 struct bt_ctf_field_type *u64_hex;
76 };
77 struct bt_ctf_field_type *array[6];
78 } data;
79 struct bt_ctf_event_class *comm_class;
80 struct bt_ctf_event_class *exit_class;
81 struct bt_ctf_event_class *fork_class;
82 struct bt_ctf_event_class *mmap_class;
83 struct bt_ctf_event_class *mmap2_class;
84};
85
86struct convert {
87 struct perf_tool tool;
88 struct ctf_writer writer;
89
90 u64 events_size;
91 u64 events_count;
92 u64 non_sample_count;
93
94 /* Ordered events configured queue size. */
95 u64 queue_size;
96};
97
98static int value_set(struct bt_ctf_field_type *type,
99 struct bt_ctf_event *event,
100 const char *name, u64 val)
101{
102 struct bt_ctf_field *field;
103 bool sign = bt_ctf_field_type_integer_get_signed(type);
104 int ret;
105
106 field = bt_ctf_field_create(type);
107 if (!field) {
108 pr_err("failed to create a field %s\n", name);
109 return -1;
110 }
111
112 if (sign) {
113 ret = bt_ctf_field_signed_integer_set_value(field, val);
114 if (ret) {
115 pr_err("failed to set field value %s\n", name);
116 goto err;
117 }
118 } else {
119 ret = bt_ctf_field_unsigned_integer_set_value(field, val);
120 if (ret) {
121 pr_err("failed to set field value %s\n", name);
122 goto err;
123 }
124 }
125
126 ret = bt_ctf_event_set_payload(event, name, field);
127 if (ret) {
128 pr_err("failed to set payload %s\n", name);
129 goto err;
130 }
131
132 pr2(" SET [%s = %" PRIu64 "]\n", name, val);
133
134err:
135 bt_ctf_field_put(field);
136 return ret;
137}
138
139#define __FUNC_VALUE_SET(_name, _val_type) \
140static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
141 struct bt_ctf_event *event, \
142 const char *name, \
143 _val_type val) \
144{ \
145 struct bt_ctf_field_type *type = cw->data._name; \
146 return value_set(type, event, name, (u64) val); \
147}
148
149#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
150
151FUNC_VALUE_SET(s32)
152FUNC_VALUE_SET(u32)
153FUNC_VALUE_SET(s64)
154FUNC_VALUE_SET(u64)
155__FUNC_VALUE_SET(u64_hex, u64)
156
157static int string_set_value(struct bt_ctf_field *field, const char *string);
158static __maybe_unused int
159value_set_string(struct ctf_writer *cw, struct bt_ctf_event *event,
160 const char *name, const char *string)
161{
162 struct bt_ctf_field_type *type = cw->data.string;
163 struct bt_ctf_field *field;
164 int ret = 0;
165
166 field = bt_ctf_field_create(type);
167 if (!field) {
168 pr_err("failed to create a field %s\n", name);
169 return -1;
170 }
171
172 ret = string_set_value(field, string);
173 if (ret) {
174 pr_err("failed to set value %s\n", name);
175 goto err_put_field;
176 }
177
178 ret = bt_ctf_event_set_payload(event, name, field);
179 if (ret)
180 pr_err("failed to set payload %s\n", name);
181
182err_put_field:
183 bt_ctf_field_put(field);
184 return ret;
185}
186
187static struct bt_ctf_field_type*
188get_tracepoint_field_type(struct ctf_writer *cw, struct tep_format_field *field)
189{
190 unsigned long flags = field->flags;
191
192 if (flags & TEP_FIELD_IS_STRING)
193 return cw->data.string;
194
195 if (!(flags & TEP_FIELD_IS_SIGNED)) {
196 /* unsigned long are mostly pointers */
197 if (flags & TEP_FIELD_IS_LONG || flags & TEP_FIELD_IS_POINTER)
198 return cw->data.u64_hex;
199 }
200
201 if (flags & TEP_FIELD_IS_SIGNED) {
202 if (field->size == 8)
203 return cw->data.s64;
204 else
205 return cw->data.s32;
206 }
207
208 if (field->size == 8)
209 return cw->data.u64;
210 else
211 return cw->data.u32;
212}
213
214static unsigned long long adjust_signedness(unsigned long long value_int, int size)
215{
216 unsigned long long value_mask;
217
218 /*
219 * value_mask = (1 << (size * 8 - 1)) - 1.
220 * Directly set value_mask for code readers.
221 */
222 switch (size) {
223 case 1:
224 value_mask = 0x7fULL;
225 break;
226 case 2:
227 value_mask = 0x7fffULL;
228 break;
229 case 4:
230 value_mask = 0x7fffffffULL;
231 break;
232 case 8:
233 /*
234 * For 64 bit value, return it self. There is no need
235 * to fill high bit.
236 */
237 /* Fall through */
238 default:
239 /* BUG! */
240 return value_int;
241 }
242
243 /* If it is a positive value, don't adjust. */
244 if ((value_int & (~0ULL - value_mask)) == 0)
245 return value_int;
246
247 /* Fill upper part of value_int with 1 to make it a negative long long. */
248 return (value_int & value_mask) | ~value_mask;
249}
250
251static int string_set_value(struct bt_ctf_field *field, const char *string)
252{
253 char *buffer = NULL;
254 size_t len = strlen(string), i, p;
255 int err;
256
257 for (i = p = 0; i < len; i++, p++) {
258 if (isprint(string[i])) {
259 if (!buffer)
260 continue;
261 buffer[p] = string[i];
262 } else {
263 char numstr[5];
264
265 snprintf(numstr, sizeof(numstr), "\\x%02x",
266 (unsigned int)(string[i]) & 0xff);
267
268 if (!buffer) {
269 buffer = zalloc(i + (len - i) * 4 + 2);
270 if (!buffer) {
271 pr_err("failed to set unprintable string '%s'\n", string);
272 return bt_ctf_field_string_set_value(field, "UNPRINTABLE-STRING");
273 }
274 if (i > 0)
275 strncpy(buffer, string, i);
276 }
277 memcpy(buffer + p, numstr, 4);
278 p += 3;
279 }
280 }
281
282 if (!buffer)
283 return bt_ctf_field_string_set_value(field, string);
284 err = bt_ctf_field_string_set_value(field, buffer);
285 free(buffer);
286 return err;
287}
288
289static int add_tracepoint_field_value(struct ctf_writer *cw,
290 struct bt_ctf_event_class *event_class,
291 struct bt_ctf_event *event,
292 struct perf_sample *sample,
293 struct tep_format_field *fmtf)
294{
295 struct bt_ctf_field_type *type;
296 struct bt_ctf_field *array_field;
297 struct bt_ctf_field *field;
298 const char *name = fmtf->name;
299 void *data = sample->raw_data;
300 unsigned long flags = fmtf->flags;
301 unsigned int n_items;
302 unsigned int i;
303 unsigned int offset;
304 unsigned int len;
305 int ret;
306
307 name = fmtf->alias;
308 offset = fmtf->offset;
309 len = fmtf->size;
310 if (flags & TEP_FIELD_IS_STRING)
311 flags &= ~TEP_FIELD_IS_ARRAY;
312
313 if (flags & TEP_FIELD_IS_DYNAMIC) {
314 unsigned long long tmp_val;
315
316 tmp_val = tep_read_number(fmtf->event->tep,
317 data + offset, len);
318 offset = tmp_val;
319 len = offset >> 16;
320 offset &= 0xffff;
321 }
322
323 if (flags & TEP_FIELD_IS_ARRAY) {
324
325 type = bt_ctf_event_class_get_field_by_name(
326 event_class, name);
327 array_field = bt_ctf_field_create(type);
328 bt_ctf_field_type_put(type);
329 if (!array_field) {
330 pr_err("Failed to create array type %s\n", name);
331 return -1;
332 }
333
334 len = fmtf->size / fmtf->arraylen;
335 n_items = fmtf->arraylen;
336 } else {
337 n_items = 1;
338 array_field = NULL;
339 }
340
341 type = get_tracepoint_field_type(cw, fmtf);
342
343 for (i = 0; i < n_items; i++) {
344 if (flags & TEP_FIELD_IS_ARRAY)
345 field = bt_ctf_field_array_get_field(array_field, i);
346 else
347 field = bt_ctf_field_create(type);
348
349 if (!field) {
350 pr_err("failed to create a field %s\n", name);
351 return -1;
352 }
353
354 if (flags & TEP_FIELD_IS_STRING)
355 ret = string_set_value(field, data + offset + i * len);
356 else {
357 unsigned long long value_int;
358
359 value_int = tep_read_number(
360 fmtf->event->tep,
361 data + offset + i * len, len);
362
363 if (!(flags & TEP_FIELD_IS_SIGNED))
364 ret = bt_ctf_field_unsigned_integer_set_value(
365 field, value_int);
366 else
367 ret = bt_ctf_field_signed_integer_set_value(
368 field, adjust_signedness(value_int, len));
369 }
370
371 if (ret) {
372 pr_err("failed to set file value %s\n", name);
373 goto err_put_field;
374 }
375 if (!(flags & TEP_FIELD_IS_ARRAY)) {
376 ret = bt_ctf_event_set_payload(event, name, field);
377 if (ret) {
378 pr_err("failed to set payload %s\n", name);
379 goto err_put_field;
380 }
381 }
382 bt_ctf_field_put(field);
383 }
384 if (flags & TEP_FIELD_IS_ARRAY) {
385 ret = bt_ctf_event_set_payload(event, name, array_field);
386 if (ret) {
387 pr_err("Failed add payload array %s\n", name);
388 return -1;
389 }
390 bt_ctf_field_put(array_field);
391 }
392 return 0;
393
394err_put_field:
395 bt_ctf_field_put(field);
396 return -1;
397}
398
399static int add_tracepoint_fields_values(struct ctf_writer *cw,
400 struct bt_ctf_event_class *event_class,
401 struct bt_ctf_event *event,
402 struct tep_format_field *fields,
403 struct perf_sample *sample)
404{
405 struct tep_format_field *field;
406 int ret;
407
408 for (field = fields; field; field = field->next) {
409 ret = add_tracepoint_field_value(cw, event_class, event, sample,
410 field);
411 if (ret)
412 return -1;
413 }
414 return 0;
415}
416
417static int add_tracepoint_values(struct ctf_writer *cw,
418 struct bt_ctf_event_class *event_class,
419 struct bt_ctf_event *event,
420 struct evsel *evsel,
421 struct perf_sample *sample)
422{
423 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
424 struct tep_format_field *fields = evsel->tp_format->format.fields;
425 int ret;
426
427 ret = add_tracepoint_fields_values(cw, event_class, event,
428 common_fields, sample);
429 if (!ret)
430 ret = add_tracepoint_fields_values(cw, event_class, event,
431 fields, sample);
432
433 return ret;
434}
435
436static int
437add_bpf_output_values(struct bt_ctf_event_class *event_class,
438 struct bt_ctf_event *event,
439 struct perf_sample *sample)
440{
441 struct bt_ctf_field_type *len_type, *seq_type;
442 struct bt_ctf_field *len_field, *seq_field;
443 unsigned int raw_size = sample->raw_size;
444 unsigned int nr_elements = raw_size / sizeof(u32);
445 unsigned int i;
446 int ret;
447
448 if (nr_elements * sizeof(u32) != raw_size)
449 pr_warning("Incorrect raw_size (%u) in bpf output event, skip %zu bytes\n",
450 raw_size, nr_elements * sizeof(u32) - raw_size);
451
452 len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
453 len_field = bt_ctf_field_create(len_type);
454 if (!len_field) {
455 pr_err("failed to create 'raw_len' for bpf output event\n");
456 ret = -1;
457 goto put_len_type;
458 }
459
460 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
461 if (ret) {
462 pr_err("failed to set field value for raw_len\n");
463 goto put_len_field;
464 }
465 ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
466 if (ret) {
467 pr_err("failed to set payload to raw_len\n");
468 goto put_len_field;
469 }
470
471 seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
472 seq_field = bt_ctf_field_create(seq_type);
473 if (!seq_field) {
474 pr_err("failed to create 'raw_data' for bpf output event\n");
475 ret = -1;
476 goto put_seq_type;
477 }
478
479 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
480 if (ret) {
481 pr_err("failed to set length of 'raw_data'\n");
482 goto put_seq_field;
483 }
484
485 for (i = 0; i < nr_elements; i++) {
486 struct bt_ctf_field *elem_field =
487 bt_ctf_field_sequence_get_field(seq_field, i);
488
489 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
490 ((u32 *)(sample->raw_data))[i]);
491
492 bt_ctf_field_put(elem_field);
493 if (ret) {
494 pr_err("failed to set raw_data[%d]\n", i);
495 goto put_seq_field;
496 }
497 }
498
499 ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
500 if (ret)
501 pr_err("failed to set payload for raw_data\n");
502
503put_seq_field:
504 bt_ctf_field_put(seq_field);
505put_seq_type:
506 bt_ctf_field_type_put(seq_type);
507put_len_field:
508 bt_ctf_field_put(len_field);
509put_len_type:
510 bt_ctf_field_type_put(len_type);
511 return ret;
512}
513
514static int
515add_callchain_output_values(struct bt_ctf_event_class *event_class,
516 struct bt_ctf_event *event,
517 struct ip_callchain *callchain)
518{
519 struct bt_ctf_field_type *len_type, *seq_type;
520 struct bt_ctf_field *len_field, *seq_field;
521 unsigned int nr_elements = callchain->nr;
522 unsigned int i;
523 int ret;
524
525 len_type = bt_ctf_event_class_get_field_by_name(
526 event_class, "perf_callchain_size");
527 len_field = bt_ctf_field_create(len_type);
528 if (!len_field) {
529 pr_err("failed to create 'perf_callchain_size' for callchain output event\n");
530 ret = -1;
531 goto put_len_type;
532 }
533
534 ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
535 if (ret) {
536 pr_err("failed to set field value for perf_callchain_size\n");
537 goto put_len_field;
538 }
539 ret = bt_ctf_event_set_payload(event, "perf_callchain_size", len_field);
540 if (ret) {
541 pr_err("failed to set payload to perf_callchain_size\n");
542 goto put_len_field;
543 }
544
545 seq_type = bt_ctf_event_class_get_field_by_name(
546 event_class, "perf_callchain");
547 seq_field = bt_ctf_field_create(seq_type);
548 if (!seq_field) {
549 pr_err("failed to create 'perf_callchain' for callchain output event\n");
550 ret = -1;
551 goto put_seq_type;
552 }
553
554 ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
555 if (ret) {
556 pr_err("failed to set length of 'perf_callchain'\n");
557 goto put_seq_field;
558 }
559
560 for (i = 0; i < nr_elements; i++) {
561 struct bt_ctf_field *elem_field =
562 bt_ctf_field_sequence_get_field(seq_field, i);
563
564 ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
565 ((u64 *)(callchain->ips))[i]);
566
567 bt_ctf_field_put(elem_field);
568 if (ret) {
569 pr_err("failed to set callchain[%d]\n", i);
570 goto put_seq_field;
571 }
572 }
573
574 ret = bt_ctf_event_set_payload(event, "perf_callchain", seq_field);
575 if (ret)
576 pr_err("failed to set payload for raw_data\n");
577
578put_seq_field:
579 bt_ctf_field_put(seq_field);
580put_seq_type:
581 bt_ctf_field_type_put(seq_type);
582put_len_field:
583 bt_ctf_field_put(len_field);
584put_len_type:
585 bt_ctf_field_type_put(len_type);
586 return ret;
587}
588
589static int add_generic_values(struct ctf_writer *cw,
590 struct bt_ctf_event *event,
591 struct evsel *evsel,
592 struct perf_sample *sample)
593{
594 u64 type = evsel->core.attr.sample_type;
595 int ret;
596
597 /*
598 * missing:
599 * PERF_SAMPLE_TIME - not needed as we have it in
600 * ctf event header
601 * PERF_SAMPLE_READ - TODO
602 * PERF_SAMPLE_RAW - tracepoint fields are handled separately
603 * PERF_SAMPLE_BRANCH_STACK - TODO
604 * PERF_SAMPLE_REGS_USER - TODO
605 * PERF_SAMPLE_STACK_USER - TODO
606 */
607
608 if (type & PERF_SAMPLE_IP) {
609 ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
610 if (ret)
611 return -1;
612 }
613
614 if (type & PERF_SAMPLE_TID) {
615 ret = value_set_s32(cw, event, "perf_tid", sample->tid);
616 if (ret)
617 return -1;
618
619 ret = value_set_s32(cw, event, "perf_pid", sample->pid);
620 if (ret)
621 return -1;
622 }
623
624 if ((type & PERF_SAMPLE_ID) ||
625 (type & PERF_SAMPLE_IDENTIFIER)) {
626 ret = value_set_u64(cw, event, "perf_id", sample->id);
627 if (ret)
628 return -1;
629 }
630
631 if (type & PERF_SAMPLE_STREAM_ID) {
632 ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
633 if (ret)
634 return -1;
635 }
636
637 if (type & PERF_SAMPLE_PERIOD) {
638 ret = value_set_u64(cw, event, "perf_period", sample->period);
639 if (ret)
640 return -1;
641 }
642
643 if (type & PERF_SAMPLE_WEIGHT) {
644 ret = value_set_u64(cw, event, "perf_weight", sample->weight);
645 if (ret)
646 return -1;
647 }
648
649 if (type & PERF_SAMPLE_DATA_SRC) {
650 ret = value_set_u64(cw, event, "perf_data_src",
651 sample->data_src);
652 if (ret)
653 return -1;
654 }
655
656 if (type & PERF_SAMPLE_TRANSACTION) {
657 ret = value_set_u64(cw, event, "perf_transaction",
658 sample->transaction);
659 if (ret)
660 return -1;
661 }
662
663 return 0;
664}
665
666static int ctf_stream__flush(struct ctf_stream *cs)
667{
668 int err = 0;
669
670 if (cs) {
671 err = bt_ctf_stream_flush(cs->stream);
672 if (err)
673 pr_err("CTF stream %d flush failed\n", cs->cpu);
674
675 pr("Flush stream for cpu %d (%u samples)\n",
676 cs->cpu, cs->count);
677
678 cs->count = 0;
679 }
680
681 return err;
682}
683
684static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
685{
686 struct ctf_stream *cs;
687 struct bt_ctf_field *pkt_ctx = NULL;
688 struct bt_ctf_field *cpu_field = NULL;
689 struct bt_ctf_stream *stream = NULL;
690 int ret;
691
692 cs = zalloc(sizeof(*cs));
693 if (!cs) {
694 pr_err("Failed to allocate ctf stream\n");
695 return NULL;
696 }
697
698 stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
699 if (!stream) {
700 pr_err("Failed to create CTF stream\n");
701 goto out;
702 }
703
704 pkt_ctx = bt_ctf_stream_get_packet_context(stream);
705 if (!pkt_ctx) {
706 pr_err("Failed to obtain packet context\n");
707 goto out;
708 }
709
710 cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
711 bt_ctf_field_put(pkt_ctx);
712 if (!cpu_field) {
713 pr_err("Failed to obtain cpu field\n");
714 goto out;
715 }
716
717 ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
718 if (ret) {
719 pr_err("Failed to update CPU number\n");
720 goto out;
721 }
722
723 bt_ctf_field_put(cpu_field);
724
725 cs->cpu = cpu;
726 cs->stream = stream;
727 return cs;
728
729out:
730 if (cpu_field)
731 bt_ctf_field_put(cpu_field);
732 if (stream)
733 bt_ctf_stream_put(stream);
734
735 free(cs);
736 return NULL;
737}
738
739static void ctf_stream__delete(struct ctf_stream *cs)
740{
741 if (cs) {
742 bt_ctf_stream_put(cs->stream);
743 free(cs);
744 }
745}
746
747static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
748{
749 struct ctf_stream *cs = cw->stream[cpu];
750
751 if (!cs) {
752 cs = ctf_stream__create(cw, cpu);
753 cw->stream[cpu] = cs;
754 }
755
756 return cs;
757}
758
759static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
760 struct evsel *evsel)
761{
762 int cpu = 0;
763
764 if (evsel->core.attr.sample_type & PERF_SAMPLE_CPU)
765 cpu = sample->cpu;
766
767 if (cpu > cw->stream_cnt) {
768 pr_err("Event was recorded for CPU %d, limit is at %d.\n",
769 cpu, cw->stream_cnt);
770 cpu = 0;
771 }
772
773 return cpu;
774}
775
776#define STREAM_FLUSH_COUNT 100000
777
778/*
779 * Currently we have no other way to determine the
780 * time for the stream flush other than keep track
781 * of the number of events and check it against
782 * threshold.
783 */
784static bool is_flush_needed(struct ctf_stream *cs)
785{
786 return cs->count >= STREAM_FLUSH_COUNT;
787}
788
789static int process_sample_event(struct perf_tool *tool,
790 union perf_event *_event,
791 struct perf_sample *sample,
792 struct evsel *evsel,
793 struct machine *machine __maybe_unused)
794{
795 struct convert *c = container_of(tool, struct convert, tool);
796 struct evsel_priv *priv = evsel->priv;
797 struct ctf_writer *cw = &c->writer;
798 struct ctf_stream *cs;
799 struct bt_ctf_event_class *event_class;
800 struct bt_ctf_event *event;
801 int ret;
802 unsigned long type = evsel->core.attr.sample_type;
803
804 if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
805 return 0;
806
807 event_class = priv->event_class;
808
809 /* update stats */
810 c->events_count++;
811 c->events_size += _event->header.size;
812
813 pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
814
815 event = bt_ctf_event_create(event_class);
816 if (!event) {
817 pr_err("Failed to create an CTF event\n");
818 return -1;
819 }
820
821 bt_ctf_clock_set_time(cw->clock, sample->time);
822
823 ret = add_generic_values(cw, event, evsel, sample);
824 if (ret)
825 return -1;
826
827 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
828 ret = add_tracepoint_values(cw, event_class, event,
829 evsel, sample);
830 if (ret)
831 return -1;
832 }
833
834 if (type & PERF_SAMPLE_CALLCHAIN) {
835 ret = add_callchain_output_values(event_class,
836 event, sample->callchain);
837 if (ret)
838 return -1;
839 }
840
841 if (evsel__is_bpf_output(evsel)) {
842 ret = add_bpf_output_values(event_class, event, sample);
843 if (ret)
844 return -1;
845 }
846
847 cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
848 if (cs) {
849 if (is_flush_needed(cs))
850 ctf_stream__flush(cs);
851
852 cs->count++;
853 bt_ctf_stream_append_event(cs->stream, event);
854 }
855
856 bt_ctf_event_put(event);
857 return cs ? 0 : -1;
858}
859
860#define __NON_SAMPLE_SET_FIELD(_name, _type, _field) \
861do { \
862 ret = value_set_##_type(cw, event, #_field, _event->_name._field);\
863 if (ret) \
864 return -1; \
865} while(0)
866
867#define __FUNC_PROCESS_NON_SAMPLE(_name, body) \
868static int process_##_name##_event(struct perf_tool *tool, \
869 union perf_event *_event, \
870 struct perf_sample *sample, \
871 struct machine *machine) \
872{ \
873 struct convert *c = container_of(tool, struct convert, tool);\
874 struct ctf_writer *cw = &c->writer; \
875 struct bt_ctf_event_class *event_class = cw->_name##_class;\
876 struct bt_ctf_event *event; \
877 struct ctf_stream *cs; \
878 int ret; \
879 \
880 c->non_sample_count++; \
881 c->events_size += _event->header.size; \
882 event = bt_ctf_event_create(event_class); \
883 if (!event) { \
884 pr_err("Failed to create an CTF event\n"); \
885 return -1; \
886 } \
887 \
888 bt_ctf_clock_set_time(cw->clock, sample->time); \
889 body \
890 cs = ctf_stream(cw, 0); \
891 if (cs) { \
892 if (is_flush_needed(cs)) \
893 ctf_stream__flush(cs); \
894 \
895 cs->count++; \
896 bt_ctf_stream_append_event(cs->stream, event); \
897 } \
898 bt_ctf_event_put(event); \
899 \
900 return perf_event__process_##_name(tool, _event, sample, machine);\
901}
902
903__FUNC_PROCESS_NON_SAMPLE(comm,
904 __NON_SAMPLE_SET_FIELD(comm, u32, pid);
905 __NON_SAMPLE_SET_FIELD(comm, u32, tid);
906 __NON_SAMPLE_SET_FIELD(comm, string, comm);
907)
908__FUNC_PROCESS_NON_SAMPLE(fork,
909 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
910 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
911 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
912 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
913 __NON_SAMPLE_SET_FIELD(fork, u64, time);
914)
915
916__FUNC_PROCESS_NON_SAMPLE(exit,
917 __NON_SAMPLE_SET_FIELD(fork, u32, pid);
918 __NON_SAMPLE_SET_FIELD(fork, u32, ppid);
919 __NON_SAMPLE_SET_FIELD(fork, u32, tid);
920 __NON_SAMPLE_SET_FIELD(fork, u32, ptid);
921 __NON_SAMPLE_SET_FIELD(fork, u64, time);
922)
923__FUNC_PROCESS_NON_SAMPLE(mmap,
924 __NON_SAMPLE_SET_FIELD(mmap, u32, pid);
925 __NON_SAMPLE_SET_FIELD(mmap, u32, tid);
926 __NON_SAMPLE_SET_FIELD(mmap, u64_hex, start);
927 __NON_SAMPLE_SET_FIELD(mmap, string, filename);
928)
929__FUNC_PROCESS_NON_SAMPLE(mmap2,
930 __NON_SAMPLE_SET_FIELD(mmap2, u32, pid);
931 __NON_SAMPLE_SET_FIELD(mmap2, u32, tid);
932 __NON_SAMPLE_SET_FIELD(mmap2, u64_hex, start);
933 __NON_SAMPLE_SET_FIELD(mmap2, string, filename);
934)
935#undef __NON_SAMPLE_SET_FIELD
936#undef __FUNC_PROCESS_NON_SAMPLE
937
938/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
939static char *change_name(char *name, char *orig_name, int dup)
940{
941 char *new_name = NULL;
942 size_t len;
943
944 if (!name)
945 name = orig_name;
946
947 if (dup >= 10)
948 goto out;
949 /*
950 * Add '_' prefix to potential keywork. According to
951 * Mathieu Desnoyers (https://lore.kernel.org/lkml/1074266107.40857.1422045946295.JavaMail.zimbra@efficios.com),
952 * further CTF spec updating may require us to use '$'.
953 */
954 if (dup < 0)
955 len = strlen(name) + sizeof("_");
956 else
957 len = strlen(orig_name) + sizeof("_dupl_X");
958
959 new_name = malloc(len);
960 if (!new_name)
961 goto out;
962
963 if (dup < 0)
964 snprintf(new_name, len, "_%s", name);
965 else
966 snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
967
968out:
969 if (name != orig_name)
970 free(name);
971 return new_name;
972}
973
974static int event_class_add_field(struct bt_ctf_event_class *event_class,
975 struct bt_ctf_field_type *type,
976 struct tep_format_field *field)
977{
978 struct bt_ctf_field_type *t = NULL;
979 char *name;
980 int dup = 1;
981 int ret;
982
983 /* alias was already assigned */
984 if (field->alias != field->name)
985 return bt_ctf_event_class_add_field(event_class, type,
986 (char *)field->alias);
987
988 name = field->name;
989
990 /* If 'name' is a keywork, add prefix. */
991 if (bt_ctf_validate_identifier(name))
992 name = change_name(name, field->name, -1);
993
994 if (!name) {
995 pr_err("Failed to fix invalid identifier.");
996 return -1;
997 }
998 while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
999 bt_ctf_field_type_put(t);
1000 name = change_name(name, field->name, dup++);
1001 if (!name) {
1002 pr_err("Failed to create dup name for '%s'\n", field->name);
1003 return -1;
1004 }
1005 }
1006
1007 ret = bt_ctf_event_class_add_field(event_class, type, name);
1008 if (!ret)
1009 field->alias = name;
1010
1011 return ret;
1012}
1013
1014static int add_tracepoint_fields_types(struct ctf_writer *cw,
1015 struct tep_format_field *fields,
1016 struct bt_ctf_event_class *event_class)
1017{
1018 struct tep_format_field *field;
1019 int ret;
1020
1021 for (field = fields; field; field = field->next) {
1022 struct bt_ctf_field_type *type;
1023 unsigned long flags = field->flags;
1024
1025 pr2(" field '%s'\n", field->name);
1026
1027 type = get_tracepoint_field_type(cw, field);
1028 if (!type)
1029 return -1;
1030
1031 /*
1032 * A string is an array of chars. For this we use the string
1033 * type and don't care that it is an array. What we don't
1034 * support is an array of strings.
1035 */
1036 if (flags & TEP_FIELD_IS_STRING)
1037 flags &= ~TEP_FIELD_IS_ARRAY;
1038
1039 if (flags & TEP_FIELD_IS_ARRAY)
1040 type = bt_ctf_field_type_array_create(type, field->arraylen);
1041
1042 ret = event_class_add_field(event_class, type, field);
1043
1044 if (flags & TEP_FIELD_IS_ARRAY)
1045 bt_ctf_field_type_put(type);
1046
1047 if (ret) {
1048 pr_err("Failed to add field '%s': %d\n",
1049 field->name, ret);
1050 return -1;
1051 }
1052 }
1053
1054 return 0;
1055}
1056
1057static int add_tracepoint_types(struct ctf_writer *cw,
1058 struct evsel *evsel,
1059 struct bt_ctf_event_class *class)
1060{
1061 struct tep_format_field *common_fields = evsel->tp_format->format.common_fields;
1062 struct tep_format_field *fields = evsel->tp_format->format.fields;
1063 int ret;
1064
1065 ret = add_tracepoint_fields_types(cw, common_fields, class);
1066 if (!ret)
1067 ret = add_tracepoint_fields_types(cw, fields, class);
1068
1069 return ret;
1070}
1071
1072static int add_bpf_output_types(struct ctf_writer *cw,
1073 struct bt_ctf_event_class *class)
1074{
1075 struct bt_ctf_field_type *len_type = cw->data.u32;
1076 struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
1077 struct bt_ctf_field_type *seq_type;
1078 int ret;
1079
1080 ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
1081 if (ret)
1082 return ret;
1083
1084 seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
1085 if (!seq_type)
1086 return -1;
1087
1088 return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
1089}
1090
1091static int add_generic_types(struct ctf_writer *cw, struct evsel *evsel,
1092 struct bt_ctf_event_class *event_class)
1093{
1094 u64 type = evsel->core.attr.sample_type;
1095
1096 /*
1097 * missing:
1098 * PERF_SAMPLE_TIME - not needed as we have it in
1099 * ctf event header
1100 * PERF_SAMPLE_READ - TODO
1101 * PERF_SAMPLE_CALLCHAIN - TODO
1102 * PERF_SAMPLE_RAW - tracepoint fields and BPF output
1103 * are handled separately
1104 * PERF_SAMPLE_BRANCH_STACK - TODO
1105 * PERF_SAMPLE_REGS_USER - TODO
1106 * PERF_SAMPLE_STACK_USER - TODO
1107 */
1108
1109#define ADD_FIELD(cl, t, n) \
1110 do { \
1111 pr2(" field '%s'\n", n); \
1112 if (bt_ctf_event_class_add_field(cl, t, n)) { \
1113 pr_err("Failed to add field '%s';\n", n); \
1114 return -1; \
1115 } \
1116 } while (0)
1117
1118 if (type & PERF_SAMPLE_IP)
1119 ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
1120
1121 if (type & PERF_SAMPLE_TID) {
1122 ADD_FIELD(event_class, cw->data.s32, "perf_tid");
1123 ADD_FIELD(event_class, cw->data.s32, "perf_pid");
1124 }
1125
1126 if ((type & PERF_SAMPLE_ID) ||
1127 (type & PERF_SAMPLE_IDENTIFIER))
1128 ADD_FIELD(event_class, cw->data.u64, "perf_id");
1129
1130 if (type & PERF_SAMPLE_STREAM_ID)
1131 ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
1132
1133 if (type & PERF_SAMPLE_PERIOD)
1134 ADD_FIELD(event_class, cw->data.u64, "perf_period");
1135
1136 if (type & PERF_SAMPLE_WEIGHT)
1137 ADD_FIELD(event_class, cw->data.u64, "perf_weight");
1138
1139 if (type & PERF_SAMPLE_DATA_SRC)
1140 ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
1141
1142 if (type & PERF_SAMPLE_TRANSACTION)
1143 ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
1144
1145 if (type & PERF_SAMPLE_CALLCHAIN) {
1146 ADD_FIELD(event_class, cw->data.u32, "perf_callchain_size");
1147 ADD_FIELD(event_class,
1148 bt_ctf_field_type_sequence_create(
1149 cw->data.u64_hex, "perf_callchain_size"),
1150 "perf_callchain");
1151 }
1152
1153#undef ADD_FIELD
1154 return 0;
1155}
1156
1157static int add_event(struct ctf_writer *cw, struct evsel *evsel)
1158{
1159 struct bt_ctf_event_class *event_class;
1160 struct evsel_priv *priv;
1161 const char *name = evsel__name(evsel);
1162 int ret;
1163
1164 pr("Adding event '%s' (type %d)\n", name, evsel->core.attr.type);
1165
1166 event_class = bt_ctf_event_class_create(name);
1167 if (!event_class)
1168 return -1;
1169
1170 ret = add_generic_types(cw, evsel, event_class);
1171 if (ret)
1172 goto err;
1173
1174 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
1175 ret = add_tracepoint_types(cw, evsel, event_class);
1176 if (ret)
1177 goto err;
1178 }
1179
1180 if (evsel__is_bpf_output(evsel)) {
1181 ret = add_bpf_output_types(cw, event_class);
1182 if (ret)
1183 goto err;
1184 }
1185
1186 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
1187 if (ret) {
1188 pr("Failed to add event class into stream.\n");
1189 goto err;
1190 }
1191
1192 priv = malloc(sizeof(*priv));
1193 if (!priv)
1194 goto err;
1195
1196 priv->event_class = event_class;
1197 evsel->priv = priv;
1198 return 0;
1199
1200err:
1201 bt_ctf_event_class_put(event_class);
1202 pr_err("Failed to add event '%s'.\n", name);
1203 return -1;
1204}
1205
1206static int setup_events(struct ctf_writer *cw, struct perf_session *session)
1207{
1208 struct evlist *evlist = session->evlist;
1209 struct evsel *evsel;
1210 int ret;
1211
1212 evlist__for_each_entry(evlist, evsel) {
1213 ret = add_event(cw, evsel);
1214 if (ret)
1215 return ret;
1216 }
1217 return 0;
1218}
1219
1220#define __NON_SAMPLE_ADD_FIELD(t, n) \
1221 do { \
1222 pr2(" field '%s'\n", #n); \
1223 if (bt_ctf_event_class_add_field(event_class, cw->data.t, #n)) {\
1224 pr_err("Failed to add field '%s';\n", #n);\
1225 return -1; \
1226 } \
1227 } while(0)
1228
1229#define __FUNC_ADD_NON_SAMPLE_EVENT_CLASS(_name, body) \
1230static int add_##_name##_event(struct ctf_writer *cw) \
1231{ \
1232 struct bt_ctf_event_class *event_class; \
1233 int ret; \
1234 \
1235 pr("Adding "#_name" event\n"); \
1236 event_class = bt_ctf_event_class_create("perf_" #_name);\
1237 if (!event_class) \
1238 return -1; \
1239 body \
1240 \
1241 ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);\
1242 if (ret) { \
1243 pr("Failed to add event class '"#_name"' into stream.\n");\
1244 return ret; \
1245 } \
1246 \
1247 cw->_name##_class = event_class; \
1248 bt_ctf_event_class_put(event_class); \
1249 return 0; \
1250}
1251
1252__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(comm,
1253 __NON_SAMPLE_ADD_FIELD(u32, pid);
1254 __NON_SAMPLE_ADD_FIELD(u32, tid);
1255 __NON_SAMPLE_ADD_FIELD(string, comm);
1256)
1257
1258__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(fork,
1259 __NON_SAMPLE_ADD_FIELD(u32, pid);
1260 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1261 __NON_SAMPLE_ADD_FIELD(u32, tid);
1262 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1263 __NON_SAMPLE_ADD_FIELD(u64, time);
1264)
1265
1266__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(exit,
1267 __NON_SAMPLE_ADD_FIELD(u32, pid);
1268 __NON_SAMPLE_ADD_FIELD(u32, ppid);
1269 __NON_SAMPLE_ADD_FIELD(u32, tid);
1270 __NON_SAMPLE_ADD_FIELD(u32, ptid);
1271 __NON_SAMPLE_ADD_FIELD(u64, time);
1272)
1273
1274__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap,
1275 __NON_SAMPLE_ADD_FIELD(u32, pid);
1276 __NON_SAMPLE_ADD_FIELD(u32, tid);
1277 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1278 __NON_SAMPLE_ADD_FIELD(string, filename);
1279)
1280
1281__FUNC_ADD_NON_SAMPLE_EVENT_CLASS(mmap2,
1282 __NON_SAMPLE_ADD_FIELD(u32, pid);
1283 __NON_SAMPLE_ADD_FIELD(u32, tid);
1284 __NON_SAMPLE_ADD_FIELD(u64_hex, start);
1285 __NON_SAMPLE_ADD_FIELD(string, filename);
1286)
1287#undef __NON_SAMPLE_ADD_FIELD
1288#undef __FUNC_ADD_NON_SAMPLE_EVENT_CLASS
1289
1290static int setup_non_sample_events(struct ctf_writer *cw,
1291 struct perf_session *session __maybe_unused)
1292{
1293 int ret;
1294
1295 ret = add_comm_event(cw);
1296 if (ret)
1297 return ret;
1298 ret = add_exit_event(cw);
1299 if (ret)
1300 return ret;
1301 ret = add_fork_event(cw);
1302 if (ret)
1303 return ret;
1304 ret = add_mmap_event(cw);
1305 if (ret)
1306 return ret;
1307 ret = add_mmap2_event(cw);
1308 if (ret)
1309 return ret;
1310 return 0;
1311}
1312
1313static void cleanup_events(struct perf_session *session)
1314{
1315 struct evlist *evlist = session->evlist;
1316 struct evsel *evsel;
1317
1318 evlist__for_each_entry(evlist, evsel) {
1319 struct evsel_priv *priv;
1320
1321 priv = evsel->priv;
1322 bt_ctf_event_class_put(priv->event_class);
1323 zfree(&evsel->priv);
1324 }
1325
1326 evlist__delete(evlist);
1327 session->evlist = NULL;
1328}
1329
1330static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
1331{
1332 struct ctf_stream **stream;
1333 struct perf_header *ph = &session->header;
1334 int ncpus;
1335
1336 /*
1337 * Try to get the number of cpus used in the data file,
1338 * if not present fallback to the MAX_CPUS.
1339 */
1340 ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
1341
1342 stream = zalloc(sizeof(*stream) * ncpus);
1343 if (!stream) {
1344 pr_err("Failed to allocate streams.\n");
1345 return -ENOMEM;
1346 }
1347
1348 cw->stream = stream;
1349 cw->stream_cnt = ncpus;
1350 return 0;
1351}
1352
1353static void free_streams(struct ctf_writer *cw)
1354{
1355 int cpu;
1356
1357 for (cpu = 0; cpu < cw->stream_cnt; cpu++)
1358 ctf_stream__delete(cw->stream[cpu]);
1359
1360 zfree(&cw->stream);
1361}
1362
1363static int ctf_writer__setup_env(struct ctf_writer *cw,
1364 struct perf_session *session)
1365{
1366 struct perf_header *header = &session->header;
1367 struct bt_ctf_writer *writer = cw->writer;
1368
1369#define ADD(__n, __v) \
1370do { \
1371 if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
1372 return -1; \
1373} while (0)
1374
1375 ADD("host", header->env.hostname);
1376 ADD("sysname", "Linux");
1377 ADD("release", header->env.os_release);
1378 ADD("version", header->env.version);
1379 ADD("machine", header->env.arch);
1380 ADD("domain", "kernel");
1381 ADD("tracer_name", "perf");
1382
1383#undef ADD
1384 return 0;
1385}
1386
1387static int ctf_writer__setup_clock(struct ctf_writer *cw,
1388 struct perf_session *session,
1389 bool tod)
1390{
1391 struct bt_ctf_clock *clock = cw->clock;
1392 const char *desc = "perf clock";
1393 int64_t offset = 0;
1394
1395 if (tod) {
1396 struct perf_env *env = &session->header.env;
1397
1398 if (!env->clock.enabled) {
1399 pr_err("Can't provide --tod time, missing clock data. "
1400 "Please record with -k/--clockid option.\n");
1401 return -1;
1402 }
1403
1404 desc = clockid_name(env->clock.clockid);
1405 offset = env->clock.tod_ns - env->clock.clockid_ns;
1406 }
1407
1408#define SET(__n, __v) \
1409do { \
1410 if (bt_ctf_clock_set_##__n(clock, __v)) \
1411 return -1; \
1412} while (0)
1413
1414 SET(frequency, 1000000000);
1415 SET(offset, offset);
1416 SET(description, desc);
1417 SET(precision, 10);
1418 SET(is_absolute, 0);
1419
1420#undef SET
1421 return 0;
1422}
1423
1424static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
1425{
1426 struct bt_ctf_field_type *type;
1427
1428 type = bt_ctf_field_type_integer_create(size);
1429 if (!type)
1430 return NULL;
1431
1432 if (sign &&
1433 bt_ctf_field_type_integer_set_signed(type, 1))
1434 goto err;
1435
1436 if (hex &&
1437 bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
1438 goto err;
1439
1440#if __BYTE_ORDER == __BIG_ENDIAN
1441 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
1442#else
1443 bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);
1444#endif
1445
1446 pr2("Created type: INTEGER %d-bit %ssigned %s\n",
1447 size, sign ? "un" : "", hex ? "hex" : "");
1448 return type;
1449
1450err:
1451 bt_ctf_field_type_put(type);
1452 return NULL;
1453}
1454
1455static void ctf_writer__cleanup_data(struct ctf_writer *cw)
1456{
1457 unsigned int i;
1458
1459 for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
1460 bt_ctf_field_type_put(cw->data.array[i]);
1461}
1462
1463static int ctf_writer__init_data(struct ctf_writer *cw)
1464{
1465#define CREATE_INT_TYPE(type, size, sign, hex) \
1466do { \
1467 (type) = create_int_type(size, sign, hex); \
1468 if (!(type)) \
1469 goto err; \
1470} while (0)
1471
1472 CREATE_INT_TYPE(cw->data.s64, 64, true, false);
1473 CREATE_INT_TYPE(cw->data.u64, 64, false, false);
1474 CREATE_INT_TYPE(cw->data.s32, 32, true, false);
1475 CREATE_INT_TYPE(cw->data.u32, 32, false, false);
1476 CREATE_INT_TYPE(cw->data.u32_hex, 32, false, true);
1477 CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
1478
1479 cw->data.string = bt_ctf_field_type_string_create();
1480 if (cw->data.string)
1481 return 0;
1482
1483err:
1484 ctf_writer__cleanup_data(cw);
1485 pr_err("Failed to create data types.\n");
1486 return -1;
1487}
1488
1489static void ctf_writer__cleanup(struct ctf_writer *cw)
1490{
1491 ctf_writer__cleanup_data(cw);
1492
1493 bt_ctf_clock_put(cw->clock);
1494 free_streams(cw);
1495 bt_ctf_stream_class_put(cw->stream_class);
1496 bt_ctf_writer_put(cw->writer);
1497
1498 /* and NULL all the pointers */
1499 memset(cw, 0, sizeof(*cw));
1500}
1501
1502static int ctf_writer__init(struct ctf_writer *cw, const char *path,
1503 struct perf_session *session, bool tod)
1504{
1505 struct bt_ctf_writer *writer;
1506 struct bt_ctf_stream_class *stream_class;
1507 struct bt_ctf_clock *clock;
1508 struct bt_ctf_field_type *pkt_ctx_type;
1509 int ret;
1510
1511 /* CTF writer */
1512 writer = bt_ctf_writer_create(path);
1513 if (!writer)
1514 goto err;
1515
1516 cw->writer = writer;
1517
1518 /* CTF clock */
1519 clock = bt_ctf_clock_create("perf_clock");
1520 if (!clock) {
1521 pr("Failed to create CTF clock.\n");
1522 goto err_cleanup;
1523 }
1524
1525 cw->clock = clock;
1526
1527 if (ctf_writer__setup_clock(cw, session, tod)) {
1528 pr("Failed to setup CTF clock.\n");
1529 goto err_cleanup;
1530 }
1531
1532 /* CTF stream class */
1533 stream_class = bt_ctf_stream_class_create("perf_stream");
1534 if (!stream_class) {
1535 pr("Failed to create CTF stream class.\n");
1536 goto err_cleanup;
1537 }
1538
1539 cw->stream_class = stream_class;
1540
1541 /* CTF clock stream setup */
1542 if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
1543 pr("Failed to assign CTF clock to stream class.\n");
1544 goto err_cleanup;
1545 }
1546
1547 if (ctf_writer__init_data(cw))
1548 goto err_cleanup;
1549
1550 /* Add cpu_id for packet context */
1551 pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
1552 if (!pkt_ctx_type)
1553 goto err_cleanup;
1554
1555 ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
1556 bt_ctf_field_type_put(pkt_ctx_type);
1557 if (ret)
1558 goto err_cleanup;
1559
1560 /* CTF clock writer setup */
1561 if (bt_ctf_writer_add_clock(writer, clock)) {
1562 pr("Failed to assign CTF clock to writer.\n");
1563 goto err_cleanup;
1564 }
1565
1566 return 0;
1567
1568err_cleanup:
1569 ctf_writer__cleanup(cw);
1570err:
1571 pr_err("Failed to setup CTF writer.\n");
1572 return -1;
1573}
1574
1575static int ctf_writer__flush_streams(struct ctf_writer *cw)
1576{
1577 int cpu, ret = 0;
1578
1579 for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
1580 ret = ctf_stream__flush(cw->stream[cpu]);
1581
1582 return ret;
1583}
1584
1585static int convert__config(const char *var, const char *value, void *cb)
1586{
1587 struct convert *c = cb;
1588
1589 if (!strcmp(var, "convert.queue-size"))
1590 return perf_config_u64(&c->queue_size, var, value);
1591
1592 return 0;
1593}
1594
1595int bt_convert__perf2ctf(const char *input, const char *path,
1596 struct perf_data_convert_opts *opts)
1597{
1598 struct perf_session *session;
1599 struct perf_data data = {
1600 .path = input,
1601 .mode = PERF_DATA_MODE_READ,
1602 .force = opts->force,
1603 };
1604 struct convert c = {
1605 .tool = {
1606 .sample = process_sample_event,
1607 .mmap = perf_event__process_mmap,
1608 .mmap2 = perf_event__process_mmap2,
1609 .comm = perf_event__process_comm,
1610 .exit = perf_event__process_exit,
1611 .fork = perf_event__process_fork,
1612 .lost = perf_event__process_lost,
1613 .tracing_data = perf_event__process_tracing_data,
1614 .build_id = perf_event__process_build_id,
1615 .namespaces = perf_event__process_namespaces,
1616 .ordered_events = true,
1617 .ordering_requires_timestamps = true,
1618 },
1619 };
1620 struct ctf_writer *cw = &c.writer;
1621 int err;
1622
1623 if (opts->all) {
1624 c.tool.comm = process_comm_event;
1625 c.tool.exit = process_exit_event;
1626 c.tool.fork = process_fork_event;
1627 c.tool.mmap = process_mmap_event;
1628 c.tool.mmap2 = process_mmap2_event;
1629 }
1630
1631 err = perf_config(convert__config, &c);
1632 if (err)
1633 return err;
1634
1635 err = -1;
1636 /* perf.data session */
1637 session = perf_session__new(&data, 0, &c.tool);
1638 if (IS_ERR(session))
1639 return PTR_ERR(session);
1640
1641 /* CTF writer */
1642 if (ctf_writer__init(cw, path, session, opts->tod))
1643 goto free_session;
1644
1645 if (c.queue_size) {
1646 ordered_events__set_alloc_size(&session->ordered_events,
1647 c.queue_size);
1648 }
1649
1650 /* CTF writer env/clock setup */
1651 if (ctf_writer__setup_env(cw, session))
1652 goto free_writer;
1653
1654 /* CTF events setup */
1655 if (setup_events(cw, session))
1656 goto free_writer;
1657
1658 if (opts->all && setup_non_sample_events(cw, session))
1659 goto free_writer;
1660
1661 if (setup_streams(cw, session))
1662 goto free_writer;
1663
1664 err = perf_session__process_events(session);
1665 if (!err)
1666 err = ctf_writer__flush_streams(cw);
1667 else
1668 pr_err("Error during conversion.\n");
1669
1670 fprintf(stderr,
1671 "[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
1672 data.path, path);
1673
1674 fprintf(stderr,
1675 "[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples",
1676 (double) c.events_size / 1024.0 / 1024.0,
1677 c.events_count);
1678
1679 if (!c.non_sample_count)
1680 fprintf(stderr, ") ]\n");
1681 else
1682 fprintf(stderr, ", %" PRIu64 " non-samples) ]\n", c.non_sample_count);
1683
1684 cleanup_events(session);
1685 perf_session__delete(session);
1686 ctf_writer__cleanup(cw);
1687
1688 return err;
1689
1690free_writer:
1691 ctf_writer__cleanup(cw);
1692free_session:
1693 perf_session__delete(session);
1694 pr_err("Error during conversion setup.\n");
1695 return err;
1696}