projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
perf annotate: Display all available events on --stdio
[linux-2.6-block.git] / tools / perf / util / cs-etm.c
CommitLineData
8a9fd832 1// SPDX-License-Identifier: GPL-2.0
440a23b3 2/*
440a23b3
MP		 3 * Copyright(C) 2015-2018 Linaro Limited.
4 *
5 * Author: Tor Jeremiassen <tor@ti.com>
6 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
7 */
8
9#include <linux/bitops.h>
10#include <linux/err.h>
11#include <linux/kernel.h>
12#include <linux/log2.h>
13#include <linux/types.h>
14
15#include <stdlib.h>
16
17#include "auxtrace.h"
18#include "color.h"
19#include "cs-etm.h"
68ffe390 20#include "cs-etm-decoder/cs-etm-decoder.h"
440a23b3
MP		 21#include "debug.h"
22#include "evlist.h"
23#include "intlist.h"
24#include "machine.h"
25#include "map.h"
26#include "perf.h"
27#include "thread.h"
28#include "thread_map.h"
29#include "thread-stack.h"
30#include "util.h"
31
32#define MAX_TIMESTAMP (~0ULL)
33
e573e978
RW		 34/*
35 * A64 instructions are always 4 bytes
36 *
37 * Only A64 is supported, so can use this constant for converting between
38 * addresses and instruction counts, calculting offsets etc
39 */
40#define A64_INSTR_SIZE 4
41
440a23b3
MP		 42struct cs_etm_auxtrace {
43 struct auxtrace auxtrace;
44 struct auxtrace_queues queues;
45 struct auxtrace_heap heap;
46 struct itrace_synth_opts synth_opts;
47 struct perf_session *session;
48 struct machine *machine;
49 struct thread *unknown_thread;
50
51 u8 timeless_decoding;
52 u8 snapshot_mode;
53 u8 data_queued;
54 u8 sample_branches;
e573e978 55 u8 sample_instructions;
440a23b3
MP		 56
57 int num_cpu;
58 u32 auxtrace_type;
59 u64 branches_sample_type;
60 u64 branches_id;
e573e978
RW		 61 u64 instructions_sample_type;
62 u64 instructions_sample_period;
63 u64 instructions_id;
440a23b3
MP		 64 u64 **metadata;
65 u64 kernel_start;
66 unsigned int pmu_type;
67};
68
69struct cs_etm_queue {
70 struct cs_etm_auxtrace *etm;
71 struct thread *thread;
72 struct cs_etm_decoder *decoder;
73 struct auxtrace_buffer *buffer;
74 const struct cs_etm_state *state;
75 union perf_event *event_buf;
76 unsigned int queue_nr;
77 pid_t pid, tid;
78 int cpu;
79 u64 time;
80 u64 timestamp;
81 u64 offset;
e573e978
RW		 82 u64 period_instructions;
83 struct branch_stack *last_branch;
84 struct branch_stack *last_branch_rb;
85 size_t last_branch_pos;
86 struct cs_etm_packet *prev_packet;
87 struct cs_etm_packet *packet;
440a23b3
MP		 88};
89
9f878b29
MP		 90static int cs_etm__update_queues(struct cs_etm_auxtrace *etm);
91static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm,
92 pid_t tid, u64 time_);
93
68ffe390
MP		 94static void cs_etm__packet_dump(const char *pkt_string)
95{
96 const char *color = PERF_COLOR_BLUE;
97 int len = strlen(pkt_string);
98
99 if (len && (pkt_string[len-1] == '\n'))
100 color_fprintf(stdout, color, " %s", pkt_string);
101 else
102 color_fprintf(stdout, color, " %s\n", pkt_string);
103
104 fflush(stdout);
105}
106
107static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
108 struct auxtrace_buffer *buffer)
109{
110 int i, ret;
111 const char *color = PERF_COLOR_BLUE;
112 struct cs_etm_decoder_params d_params;
113 struct cs_etm_trace_params *t_params;
114 struct cs_etm_decoder *decoder;
115 size_t buffer_used = 0;
116
117 fprintf(stdout, "\n");
118 color_fprintf(stdout, color,
119 ". ... CoreSight ETM Trace data: size %zu bytes\n",
120 buffer->size);
121
122 /* Use metadata to fill in trace parameters for trace decoder */
123 t_params = zalloc(sizeof(*t_params) * etm->num_cpu);
124 for (i = 0; i < etm->num_cpu; i++) {
125 t_params[i].protocol = CS_ETM_PROTO_ETMV4i;
126 t_params[i].etmv4.reg_idr0 = etm->metadata[i][CS_ETMV4_TRCIDR0];
127 t_params[i].etmv4.reg_idr1 = etm->metadata[i][CS_ETMV4_TRCIDR1];
128 t_params[i].etmv4.reg_idr2 = etm->metadata[i][CS_ETMV4_TRCIDR2];
129 t_params[i].etmv4.reg_idr8 = etm->metadata[i][CS_ETMV4_TRCIDR8];
130 t_params[i].etmv4.reg_configr =
131 etm->metadata[i][CS_ETMV4_TRCCONFIGR];
132 t_params[i].etmv4.reg_traceidr =
133 etm->metadata[i][CS_ETMV4_TRCTRACEIDR];
134 }
135
136 /* Set decoder parameters to simply print the trace packets */
137 d_params.packet_printer = cs_etm__packet_dump;
138 d_params.operation = CS_ETM_OPERATION_PRINT;
139 d_params.formatted = true;
140 d_params.fsyncs = false;
141 d_params.hsyncs = false;
142 d_params.frame_aligned = true;
143
144 decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);
145
146 zfree(&t_params);
147
148 if (!decoder)
149 return;
150 do {
151 size_t consumed;
152
153 ret = cs_etm_decoder__process_data_block(
154 decoder, buffer->offset,
155 &((u8 *)buffer->data)[buffer_used],
156 buffer->size - buffer_used, &consumed);
157 if (ret)
158 break;
159
160 buffer_used += consumed;
161 } while (buffer_used < buffer->size);
162
163 cs_etm_decoder__free(decoder);
164}
165
440a23b3
MP		 166static int cs_etm__flush_events(struct perf_session *session,
167 struct perf_tool *tool)
168{
9f878b29
MP		 169 int ret;
170 struct cs_etm_auxtrace *etm = container_of(session->auxtrace,
171 struct cs_etm_auxtrace,
172 auxtrace);
173 if (dump_trace)
174 return 0;
175
176 if (!tool->ordered_events)
177 return -EINVAL;
178
179 if (!etm->timeless_decoding)
180 return -EINVAL;
181
182 ret = cs_etm__update_queues(etm);
183
184 if (ret < 0)
185 return ret;
186
187 return cs_etm__process_timeless_queues(etm, -1, MAX_TIMESTAMP - 1);
440a23b3
MP		 188}
189
190static void cs_etm__free_queue(void *priv)
191{
192 struct cs_etm_queue *etmq = priv;
193
099c1130
MP		 194 if (!etmq)
195 return;
196
197 thread__zput(etmq->thread);
198 cs_etm_decoder__free(etmq->decoder);
199 zfree(&etmq->event_buf);
e573e978
RW		 200 zfree(&etmq->last_branch);
201 zfree(&etmq->last_branch_rb);
202 zfree(&etmq->prev_packet);
203 zfree(&etmq->packet);
440a23b3
MP		 204 free(etmq);
205}
206
207static void cs_etm__free_events(struct perf_session *session)
208{
209 unsigned int i;
210 struct cs_etm_auxtrace *aux = container_of(session->auxtrace,
211 struct cs_etm_auxtrace,
212 auxtrace);
213 struct auxtrace_queues *queues = &aux->queues;
214
215 for (i = 0; i < queues->nr_queues; i++) {
216 cs_etm__free_queue(queues->queue_array[i].priv);
217 queues->queue_array[i].priv = NULL;
218 }
219
220 auxtrace_queues__free(queues);
221}
222
223static void cs_etm__free(struct perf_session *session)
224{
cd8bfd8c
TJ		 225 int i;
226 struct int_node *inode, *tmp;
440a23b3
MP		 227 struct cs_etm_auxtrace *aux = container_of(session->auxtrace,
228 struct cs_etm_auxtrace,
229 auxtrace);
230 cs_etm__free_events(session);
231 session->auxtrace = NULL;
232
cd8bfd8c
TJ		 233 /* First remove all traceID/CPU# nodes for the RB tree */
234 intlist__for_each_entry_safe(inode, tmp, traceid_list)
235 intlist__remove(traceid_list, inode);
236 /* Then the RB tree itself */
237 intlist__delete(traceid_list);
238
239 for (i = 0; i < aux->num_cpu; i++)
240 zfree(&aux->metadata[i]);
241
242 zfree(&aux->metadata);
440a23b3
MP		 243 zfree(&aux);
244}
245
20d9c478
MP		 246static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u64 address,
247 size_t size, u8 *buffer)
248{
249 u8 cpumode;
250 u64 offset;
251 int len;
252 struct thread *thread;
253 struct machine *machine;
254 struct addr_location al;
255
256 if (!etmq)
257 return -1;
258
259 machine = etmq->etm->machine;
260 if (address >= etmq->etm->kernel_start)
261 cpumode = PERF_RECORD_MISC_KERNEL;
262 else
263 cpumode = PERF_RECORD_MISC_USER;
264
265 thread = etmq->thread;
266 if (!thread) {
267 if (cpumode != PERF_RECORD_MISC_KERNEL)
268 return -EINVAL;
269 thread = etmq->etm->unknown_thread;
270 }
271
272 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, address, &al);
273
274 if (!al.map || !al.map->dso)
275 return 0;
276
277 if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR &&
278 dso__data_status_seen(al.map->dso, DSO_DATA_STATUS_SEEN_ITRACE))
279 return 0;
280
281 offset = al.map->map_ip(al.map, address);
282
283 map__load(al.map);
284
285 len = dso__data_read_offset(al.map->dso, machine, offset, buffer, size);
286
287 if (len <= 0)
288 return 0;
289
290 return len;
291}
292
293static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
294 unsigned int queue_nr)
295{
296 int i;
297 struct cs_etm_decoder_params d_params;
298 struct cs_etm_trace_params *t_params;
299 struct cs_etm_queue *etmq;
e573e978 300 size_t szp = sizeof(struct cs_etm_packet);
20d9c478
MP		 301
302 etmq = zalloc(sizeof(*etmq));
303 if (!etmq)
304 return NULL;
305
e573e978
RW		 306 etmq->packet = zalloc(szp);
307 if (!etmq->packet)
308 goto out_free;
309
310 if (etm->synth_opts.last_branch || etm->sample_branches) {
311 etmq->prev_packet = zalloc(szp);
312 if (!etmq->prev_packet)
313 goto out_free;
314 }
315
316 if (etm->synth_opts.last_branch) {
317 size_t sz = sizeof(struct branch_stack);
318
319 sz += etm->synth_opts.last_branch_sz *
320 sizeof(struct branch_entry);
321 etmq->last_branch = zalloc(sz);
322 if (!etmq->last_branch)
323 goto out_free;
324 etmq->last_branch_rb = zalloc(sz);
325 if (!etmq->last_branch_rb)
326 goto out_free;
327 }
328
20d9c478
MP		 329 etmq->event_buf = malloc(PERF_SAMPLE_MAX_SIZE);
330 if (!etmq->event_buf)
331 goto out_free;
332
333 etmq->etm = etm;
334 etmq->queue_nr = queue_nr;
335 etmq->pid = -1;
336 etmq->tid = -1;
337 etmq->cpu = -1;
338
339 /* Use metadata to fill in trace parameters for trace decoder */
340 t_params = zalloc(sizeof(*t_params) * etm->num_cpu);
341
342 if (!t_params)
343 goto out_free;
344
345 for (i = 0; i < etm->num_cpu; i++) {
346 t_params[i].protocol = CS_ETM_PROTO_ETMV4i;
347 t_params[i].etmv4.reg_idr0 = etm->metadata[i][CS_ETMV4_TRCIDR0];
348 t_params[i].etmv4.reg_idr1 = etm->metadata[i][CS_ETMV4_TRCIDR1];
349 t_params[i].etmv4.reg_idr2 = etm->metadata[i][CS_ETMV4_TRCIDR2];
350 t_params[i].etmv4.reg_idr8 = etm->metadata[i][CS_ETMV4_TRCIDR8];
351 t_params[i].etmv4.reg_configr =
352 etm->metadata[i][CS_ETMV4_TRCCONFIGR];
353 t_params[i].etmv4.reg_traceidr =
354 etm->metadata[i][CS_ETMV4_TRCTRACEIDR];
355 }
356
357 /* Set decoder parameters to simply print the trace packets */
358 d_params.packet_printer = cs_etm__packet_dump;
359 d_params.operation = CS_ETM_OPERATION_DECODE;
360 d_params.formatted = true;
361 d_params.fsyncs = false;
362 d_params.hsyncs = false;
363 d_params.frame_aligned = true;
364 d_params.data = etmq;
365
366 etmq->decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);
367
368 zfree(&t_params);
369
370 if (!etmq->decoder)
371 goto out_free;
372
373 /*
374 * Register a function to handle all memory accesses required by
375 * the trace decoder library.
376 */
377 if (cs_etm_decoder__add_mem_access_cb(etmq->decoder,
378 0x0L, ((u64) -1L),
379 cs_etm__mem_access))
380 goto out_free_decoder;
381
382 etmq->offset = 0;
e573e978 383 etmq->period_instructions = 0;
20d9c478
MP		 384
385 return etmq;
386
387out_free_decoder:
388 cs_etm_decoder__free(etmq->decoder);
389out_free:
390 zfree(&etmq->event_buf);
e573e978
RW		 391 zfree(&etmq->last_branch);
392 zfree(&etmq->last_branch_rb);
393 zfree(&etmq->prev_packet);
394 zfree(&etmq->packet);
20d9c478
MP		 395 free(etmq);
396
397 return NULL;
398}
399
400static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
401 struct auxtrace_queue *queue,
402 unsigned int queue_nr)
403{
404 struct cs_etm_queue *etmq = queue->priv;
405
406 if (list_empty(&queue->head) || etmq)
407 return 0;
408
409 etmq = cs_etm__alloc_queue(etm, queue_nr);
410
411 if (!etmq)
412 return -ENOMEM;
413
414 queue->priv = etmq;
415
416 if (queue->cpu != -1)
417 etmq->cpu = queue->cpu;
418
419 etmq->tid = queue->tid;
420
421 return 0;
422}
423
424static int cs_etm__setup_queues(struct cs_etm_auxtrace *etm)
425{
426 unsigned int i;
427 int ret;
428
429 for (i = 0; i < etm->queues.nr_queues; i++) {
430 ret = cs_etm__setup_queue(etm, &etm->queues.queue_array[i], i);
431 if (ret)
432 return ret;
433 }
434
435 return 0;
436}
437
438static int cs_etm__update_queues(struct cs_etm_auxtrace *etm)
439{
440 if (etm->queues.new_data) {
441 etm->queues.new_data = false;
442 return cs_etm__setup_queues(etm);
443 }
444
445 return 0;
446}
447
e573e978
RW		 448static inline void cs_etm__copy_last_branch_rb(struct cs_etm_queue *etmq)
449{
450 struct branch_stack *bs_src = etmq->last_branch_rb;
451 struct branch_stack *bs_dst = etmq->last_branch;
452 size_t nr = 0;
453
454 /*
455 * Set the number of records before early exit: ->nr is used to
456 * determine how many branches to copy from ->entries.
457 */
458 bs_dst->nr = bs_src->nr;
459
460 /*
461 * Early exit when there is nothing to copy.
462 */
463 if (!bs_src->nr)
464 return;
465
466 /*
467 * As bs_src->entries is a circular buffer, we need to copy from it in
468 * two steps. First, copy the branches from the most recently inserted
469 * branch ->last_branch_pos until the end of bs_src->entries buffer.
470 */
471 nr = etmq->etm->synth_opts.last_branch_sz - etmq->last_branch_pos;
472 memcpy(&bs_dst->entries[0],
473 &bs_src->entries[etmq->last_branch_pos],
474 sizeof(struct branch_entry) * nr);
475
476 /*
477 * If we wrapped around at least once, the branches from the beginning
478 * of the bs_src->entries buffer and until the ->last_branch_pos element
479 * are older valid branches: copy them over. The total number of
480 * branches copied over will be equal to the number of branches asked by
481 * the user in last_branch_sz.
482 */
483 if (bs_src->nr >= etmq->etm->synth_opts.last_branch_sz) {
484 memcpy(&bs_dst->entries[nr],
485 &bs_src->entries[0],
486 sizeof(struct branch_entry) * etmq->last_branch_pos);
487 }
488}
489
490static inline void cs_etm__reset_last_branch_rb(struct cs_etm_queue *etmq)
491{
492 etmq->last_branch_pos = 0;
493 etmq->last_branch_rb->nr = 0;
494}
495
496static inline u64 cs_etm__last_executed_instr(struct cs_etm_packet *packet)
497{
498 /*
499 * The packet records the execution range with an exclusive end address
500 *
501 * A64 instructions are constant size, so the last executed
502 * instruction is A64_INSTR_SIZE before the end address
503 * Will need to do instruction level decode for T32 instructions as
504 * they can be variable size (not yet supported).
505 */
506 return packet->end_addr - A64_INSTR_SIZE;
507}
508
509static inline u64 cs_etm__instr_count(const struct cs_etm_packet *packet)
510{
511 /*
512 * Only A64 instructions are currently supported, so can get
513 * instruction count by dividing.
514 * Will need to do instruction level decode for T32 instructions as
515 * they can be variable size (not yet supported).
516 */
517 return (packet->end_addr - packet->start_addr) / A64_INSTR_SIZE;
518}
519
520static inline u64 cs_etm__instr_addr(const struct cs_etm_packet *packet,
521 u64 offset)
522{
523 /*
524 * Only A64 instructions are currently supported, so can get
525 * instruction address by muliplying.
526 * Will need to do instruction level decode for T32 instructions as
527 * they can be variable size (not yet supported).
528 */
529 return packet->start_addr + offset * A64_INSTR_SIZE;
530}
531
532static void cs_etm__update_last_branch_rb(struct cs_etm_queue *etmq)
533{
534 struct branch_stack *bs = etmq->last_branch_rb;
535 struct branch_entry *be;
536
537 /*
538 * The branches are recorded in a circular buffer in reverse
539 * chronological order: we start recording from the last element of the
540 * buffer down. After writing the first element of the stack, move the
541 * insert position back to the end of the buffer.
542 */
543 if (!etmq->last_branch_pos)
544 etmq->last_branch_pos = etmq->etm->synth_opts.last_branch_sz;
545
546 etmq->last_branch_pos -= 1;
547
548 be = &bs->entries[etmq->last_branch_pos];
549 be->from = cs_etm__last_executed_instr(etmq->prev_packet);
550 be->to = etmq->packet->start_addr;
551 /* No support for mispredict */
552 be->flags.mispred = 0;
553 be->flags.predicted = 1;
554
555 /*
556 * Increment bs->nr until reaching the number of last branches asked by
557 * the user on the command line.
558 */
559 if (bs->nr < etmq->etm->synth_opts.last_branch_sz)
560 bs->nr += 1;
561}
562
563static int cs_etm__inject_event(union perf_event *event,
564 struct perf_sample *sample, u64 type)
565{
566 event->header.size = perf_event__sample_event_size(sample, type, 0);
567 return perf_event__synthesize_sample(event, type, 0, sample);
568}
569
570
9f878b29
MP		 571static int
572cs_etm__get_trace(struct cs_etm_buffer *buff, struct cs_etm_queue *etmq)
573{
574 struct auxtrace_buffer *aux_buffer = etmq->buffer;
575 struct auxtrace_buffer *old_buffer = aux_buffer;
576 struct auxtrace_queue *queue;
577
578 queue = &etmq->etm->queues.queue_array[etmq->queue_nr];
579
580 aux_buffer = auxtrace_buffer__next(queue, aux_buffer);
581
582 /* If no more data, drop the previous auxtrace_buffer and return */
583 if (!aux_buffer) {
584 if (old_buffer)
585 auxtrace_buffer__drop_data(old_buffer);
586 buff->len = 0;
587 return 0;
588 }
589
590 etmq->buffer = aux_buffer;
591
592 /* If the aux_buffer doesn't have data associated, try to load it */
593 if (!aux_buffer->data) {
594 /* get the file desc associated with the perf data file */
595 int fd = perf_data__fd(etmq->etm->session->data);
596
597 aux_buffer->data = auxtrace_buffer__get_data(aux_buffer, fd);
598 if (!aux_buffer->data)
599 return -ENOMEM;
600 }
601
602 /* If valid, drop the previous buffer */
603 if (old_buffer)
604 auxtrace_buffer__drop_data(old_buffer);
605
606 buff->offset = aux_buffer->offset;
607 buff->len = aux_buffer->size;
608 buff->buf = aux_buffer->data;
609
610 buff->ref_timestamp = aux_buffer->reference;
611
612 return buff->len;
613}
614
615static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm,
616 struct auxtrace_queue *queue)
617{
618 struct cs_etm_queue *etmq = queue->priv;
619
620 /* CPU-wide tracing isn't supported yet */
621 if (queue->tid == -1)
622 return;
623
624 if ((!etmq->thread) && (etmq->tid != -1))
625 etmq->thread = machine__find_thread(etm->machine, -1,
626 etmq->tid);
627
628 if (etmq->thread) {
629 etmq->pid = etmq->thread->pid_;
630 if (queue->cpu == -1)
631 etmq->cpu = etmq->thread->cpu;
632 }
633}
634
e573e978
RW		 635static int cs_etm__synth_instruction_sample(struct cs_etm_queue *etmq,
636 u64 addr, u64 period)
637{
638 int ret = 0;
639 struct cs_etm_auxtrace *etm = etmq->etm;
640 union perf_event *event = etmq->event_buf;
641 struct perf_sample sample = {.ip = 0,};
642
643 event->sample.header.type = PERF_RECORD_SAMPLE;
644 event->sample.header.misc = PERF_RECORD_MISC_USER;
645 event->sample.header.size = sizeof(struct perf_event_header);
646
647 sample.ip = addr;
648 sample.pid = etmq->pid;
649 sample.tid = etmq->tid;
650 sample.id = etmq->etm->instructions_id;
651 sample.stream_id = etmq->etm->instructions_id;
652 sample.period = period;
653 sample.cpu = etmq->packet->cpu;
654 sample.flags = 0;
655 sample.insn_len = 1;
656 sample.cpumode = event->header.misc;
657
658 if (etm->synth_opts.last_branch) {
659 cs_etm__copy_last_branch_rb(etmq);
660 sample.branch_stack = etmq->last_branch;
661 }
662
663 if (etm->synth_opts.inject) {
664 ret = cs_etm__inject_event(event, &sample,
665 etm->instructions_sample_type);
666 if (ret)
667 return ret;
668 }
669
670 ret = perf_session__deliver_synth_event(etm->session, event, &sample);
671
672 if (ret)
673 pr_err(
674 "CS ETM Trace: failed to deliver instruction event, error %d\n",
675 ret);
676
677 if (etm->synth_opts.last_branch)
678 cs_etm__reset_last_branch_rb(etmq);
679
680 return ret;
681}
682
b12235b1
MP		 683/*
684 * The cs etm packet encodes an instruction range between a branch target
685 * and the next taken branch. Generate sample accordingly.
686 */
e573e978 687static int cs_etm__synth_branch_sample(struct cs_etm_queue *etmq)
b12235b1
MP		 688{
689 int ret = 0;
690 struct cs_etm_auxtrace *etm = etmq->etm;
691 struct perf_sample sample = {.ip = 0,};
692 union perf_event *event = etmq->event_buf;
e573e978
RW		 693 struct dummy_branch_stack {
694 u64 nr;
695 struct branch_entry entries;
696 } dummy_bs;
b12235b1
MP		 697
698 event->sample.header.type = PERF_RECORD_SAMPLE;
699 event->sample.header.misc = PERF_RECORD_MISC_USER;
700 event->sample.header.size = sizeof(struct perf_event_header);
701
e573e978 702 sample.ip = cs_etm__last_executed_instr(etmq->prev_packet);
b12235b1
MP		 703 sample.pid = etmq->pid;
704 sample.tid = etmq->tid;
e573e978 705 sample.addr = etmq->packet->start_addr;
b12235b1
MP		 706 sample.id = etmq->etm->branches_id;
707 sample.stream_id = etmq->etm->branches_id;
708 sample.period = 1;
e573e978 709 sample.cpu = etmq->packet->cpu;
b12235b1
MP		 710 sample.flags = 0;
711 sample.cpumode = PERF_RECORD_MISC_USER;
712
e573e978
RW		 713 /*
714 * perf report cannot handle events without a branch stack
715 */
716 if (etm->synth_opts.last_branch) {
717 dummy_bs = (struct dummy_branch_stack){
718 .nr = 1,
719 .entries = {
720 .from = sample.ip,
721 .to = sample.addr,
722 },
723 };
724 sample.branch_stack = (struct branch_stack *)&dummy_bs;
725 }
726
727 if (etm->synth_opts.inject) {
728 ret = cs_etm__inject_event(event, &sample,
729 etm->branches_sample_type);
730 if (ret)
731 return ret;
732 }
733
b12235b1
MP		 734 ret = perf_session__deliver_synth_event(etm->session, event, &sample);
735
736 if (ret)
737 pr_err(
738 "CS ETM Trace: failed to deliver instruction event, error %d\n",
739 ret);
740
741 return ret;
742}
743
744struct cs_etm_synth {
745 struct perf_tool dummy_tool;
746 struct perf_session *session;
747};
748
749static int cs_etm__event_synth(struct perf_tool *tool,
750 union perf_event *event,
751 struct perf_sample *sample __maybe_unused,
752 struct machine *machine __maybe_unused)
753{
754 struct cs_etm_synth *cs_etm_synth =
755 container_of(tool, struct cs_etm_synth, dummy_tool);
756
757 return perf_session__deliver_synth_event(cs_etm_synth->session,
758 event, NULL);
759}
760
761static int cs_etm__synth_event(struct perf_session *session,
762 struct perf_event_attr *attr, u64 id)
763{
764 struct cs_etm_synth cs_etm_synth;
765
766 memset(&cs_etm_synth, 0, sizeof(struct cs_etm_synth));
767 cs_etm_synth.session = session;
768
769 return perf_event__synthesize_attr(&cs_etm_synth.dummy_tool, attr, 1,
770 &id, cs_etm__event_synth);
771}
772
773static int cs_etm__synth_events(struct cs_etm_auxtrace *etm,
774 struct perf_session *session)
775{
776 struct perf_evlist *evlist = session->evlist;
777 struct perf_evsel *evsel;
778 struct perf_event_attr attr;
779 bool found = false;
780 u64 id;
781 int err;
782
783 evlist__for_each_entry(evlist, evsel) {
784 if (evsel->attr.type == etm->pmu_type) {
785 found = true;
786 break;
787 }
788 }
789
790 if (!found) {
791 pr_debug("No selected events with CoreSight Trace data\n");
792 return 0;
793 }
794
795 memset(&attr, 0, sizeof(struct perf_event_attr));
796 attr.size = sizeof(struct perf_event_attr);
797 attr.type = PERF_TYPE_HARDWARE;
798 attr.sample_type = evsel->attr.sample_type & PERF_SAMPLE_MASK;
799 attr.sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID |
800 PERF_SAMPLE_PERIOD;
801 if (etm->timeless_decoding)
802 attr.sample_type &= ~(u64)PERF_SAMPLE_TIME;
803 else
804 attr.sample_type |= PERF_SAMPLE_TIME;
805
806 attr.exclude_user = evsel->attr.exclude_user;
807 attr.exclude_kernel = evsel->attr.exclude_kernel;
808 attr.exclude_hv = evsel->attr.exclude_hv;
809 attr.exclude_host = evsel->attr.exclude_host;
810 attr.exclude_guest = evsel->attr.exclude_guest;
811 attr.sample_id_all = evsel->attr.sample_id_all;
812 attr.read_format = evsel->attr.read_format;
813
814 /* create new id val to be a fixed offset from evsel id */
815 id = evsel->id[0] + 1000000000;
816
817 if (!id)
818 id = 1;
819
820 if (etm->synth_opts.branches) {
821 attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
822 attr.sample_period = 1;
823 attr.sample_type |= PERF_SAMPLE_ADDR;
824 err = cs_etm__synth_event(session, &attr, id);
825 if (err)
826 return err;
827 etm->sample_branches = true;
828 etm->branches_sample_type = attr.sample_type;
829 etm->branches_id = id;
e573e978
RW		 830 id += 1;
831 attr.sample_type &= ~(u64)PERF_SAMPLE_ADDR;
832 }
833
834 if (etm->synth_opts.last_branch)
835 attr.sample_type |= PERF_SAMPLE_BRANCH_STACK;
836
837 if (etm->synth_opts.instructions) {
838 attr.config = PERF_COUNT_HW_INSTRUCTIONS;
839 attr.sample_period = etm->synth_opts.period;
840 etm->instructions_sample_period = attr.sample_period;
841 err = cs_etm__synth_event(session, &attr, id);
842 if (err)
843 return err;
844 etm->sample_instructions = true;
845 etm->instructions_sample_type = attr.sample_type;
846 etm->instructions_id = id;
847 id += 1;
b12235b1
MP		 848 }
849
850 return 0;
851}
852
853static int cs_etm__sample(struct cs_etm_queue *etmq)
854{
e573e978
RW		 855 struct cs_etm_auxtrace *etm = etmq->etm;
856 struct cs_etm_packet *tmp;
b12235b1 857 int ret;
e573e978 858 u64 instrs_executed;
b12235b1 859
e573e978
RW		 860 instrs_executed = cs_etm__instr_count(etmq->packet);
861 etmq->period_instructions += instrs_executed;
862
863 /*
864 * Record a branch when the last instruction in
865 * PREV_PACKET is a branch.
866 */
867 if (etm->synth_opts.last_branch &&
868 etmq->prev_packet &&
256e751c 869 etmq->prev_packet->sample_type == CS_ETM_RANGE &&
e573e978
RW		 870 etmq->prev_packet->last_instr_taken_branch)
871 cs_etm__update_last_branch_rb(etmq);
872
873 if (etm->sample_instructions &&
874 etmq->period_instructions >= etm->instructions_sample_period) {
875 /*
876 * Emit instruction sample periodically
877 * TODO: allow period to be defined in cycles and clock time
878 */
879
880 /* Get number of instructions executed after the sample point */
881 u64 instrs_over = etmq->period_instructions -
882 etm->instructions_sample_period;
883
884 /*
885 * Calculate the address of the sampled instruction (-1 as
886 * sample is reported as though instruction has just been
887 * executed, but PC has not advanced to next instruction)
888 */
889 u64 offset = (instrs_executed - instrs_over - 1);
890 u64 addr = cs_etm__instr_addr(etmq->packet, offset);
891
892 ret = cs_etm__synth_instruction_sample(
893 etmq, addr, etm->instructions_sample_period);
894 if (ret)
895 return ret;
896
897 /* Carry remaining instructions into next sample period */
898 etmq->period_instructions = instrs_over;
899 }
900
901 if (etm->sample_branches &&
902 etmq->prev_packet &&
903 etmq->prev_packet->sample_type == CS_ETM_RANGE &&
904 etmq->prev_packet->last_instr_taken_branch) {
905 ret = cs_etm__synth_branch_sample(etmq);
906 if (ret)
b12235b1 907 return ret;
e573e978 908 }
b12235b1 909
e573e978 910 if (etm->sample_branches || etm->synth_opts.last_branch) {
b12235b1 911 /*
e573e978
RW		 912 * Swap PACKET with PREV_PACKET: PACKET becomes PREV_PACKET for
913 * the next incoming packet.
b12235b1 914 */
e573e978
RW		 915 tmp = etmq->packet;
916 etmq->packet = etmq->prev_packet;
917 etmq->prev_packet = tmp;
b12235b1
MP		 918 }
919
920 return 0;
921}
922
256e751c
RW		 923static int cs_etm__flush(struct cs_etm_queue *etmq)
924{
925 int err = 0;
926 struct cs_etm_packet *tmp;
927
928 if (etmq->etm->synth_opts.last_branch &&
929 etmq->prev_packet &&
930 etmq->prev_packet->sample_type == CS_ETM_RANGE) {
931 /*
932 * Generate a last branch event for the branches left in the
933 * circular buffer at the end of the trace.
934 *
935 * Use the address of the end of the last reported execution
936 * range
937 */
938 u64 addr = cs_etm__last_executed_instr(etmq->prev_packet);
939
940 err = cs_etm__synth_instruction_sample(
941 etmq, addr,
942 etmq->period_instructions);
943 etmq->period_instructions = 0;
944
945 /*
946 * Swap PACKET with PREV_PACKET: PACKET becomes PREV_PACKET for
947 * the next incoming packet.
948 */
949 tmp = etmq->packet;
950 etmq->packet = etmq->prev_packet;
951 etmq->prev_packet = tmp;
952 }
953
954 return err;
955}
956
9f878b29
MP		 957static int cs_etm__run_decoder(struct cs_etm_queue *etmq)
958{
959 struct cs_etm_auxtrace *etm = etmq->etm;
960 struct cs_etm_buffer buffer;
961 size_t buffer_used, processed;
962 int err = 0;
963
964 if (!etm->kernel_start)
965 etm->kernel_start = machine__kernel_start(etm->machine);
966
967 /* Go through each buffer in the queue and decode them one by one */
e573e978
RW		 968 while (1) {
969 buffer_used = 0;
970 memset(&buffer, 0, sizeof(buffer));
971 err = cs_etm__get_trace(&buffer, etmq);
972 if (err <= 0)
973 return err;
974 /*
975 * We cannot assume consecutive blocks in the data file are
976 * contiguous, reset the decoder to force re-sync.
977 */
978 err = cs_etm_decoder__reset(etmq->decoder);
979 if (err != 0)
9f878b29
MP		 980 return err;
981
e573e978
RW		 982 /* Run trace decoder until buffer consumed or end of trace */
983 do {
984 processed = 0;
985 err = cs_etm_decoder__process_data_block(
986 etmq->decoder,
987 etmq->offset,
988 &buffer.buf[buffer_used],
989 buffer.len - buffer_used,
990 &processed);
991 if (err)
992 return err;
993
994 etmq->offset += processed;
995 buffer_used += processed;
996
997 /* Process each packet in this chunk */
998 while (1) {
999 err = cs_etm_decoder__get_packet(etmq->decoder,
1000 etmq->packet);
1001 if (err <= 0)
1002 /*
1003 * Stop processing this chunk on
1004 * end of data or error
1005 */
1006 break;
1007
256e751c
RW		 1008 switch (etmq->packet->sample_type) {
1009 case CS_ETM_RANGE:
1010 /*
1011 * If the packet contains an instruction
1012 * range, generate instruction sequence
1013 * events.
1014 */
1015 cs_etm__sample(etmq);
1016 break;
1017 case CS_ETM_TRACE_ON:
1018 /*
1019 * Discontinuity in trace, flush
1020 * previous branch stack
1021 */
1022 cs_etm__flush(etmq);
1023 break;
1024 default:
1025 break;
1026 }
e573e978
RW		 1027 }
1028 } while (buffer.len > buffer_used);
b12235b1 1029
256e751c
RW		 1030 if (err == 0)
1031 /* Flush any remaining branch stack entries */
1032 err = cs_etm__flush(etmq);
e573e978 1033 }
9f878b29
MP		 1034
1035 return err;
1036}
1037
1038static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm,
1039 pid_t tid, u64 time_)
1040{
1041 unsigned int i;
1042 struct auxtrace_queues *queues = &etm->queues;
1043
1044 for (i = 0; i < queues->nr_queues; i++) {
1045 struct auxtrace_queue *queue = &etm->queues.queue_array[i];
1046 struct cs_etm_queue *etmq = queue->priv;
1047
1048 if (etmq && ((tid == -1) || (etmq->tid == tid))) {
1049 etmq->time = time_;
1050 cs_etm__set_pid_tid_cpu(etm, queue);
1051 cs_etm__run_decoder(etmq);
1052 }
1053 }
1054
1055 return 0;
1056}
1057
440a23b3
MP		 1058static int cs_etm__process_event(struct perf_session *session,
1059 union perf_event *event,
1060 struct perf_sample *sample,
1061 struct perf_tool *tool)
1062{
20d9c478
MP		 1063 int err = 0;
1064 u64 timestamp;
1065 struct cs_etm_auxtrace *etm = container_of(session->auxtrace,
1066 struct cs_etm_auxtrace,
1067 auxtrace);
1068
20d9c478
MP		 1069 if (dump_trace)
1070 return 0;
1071
1072 if (!tool->ordered_events) {
1073 pr_err("CoreSight ETM Trace requires ordered events\n");
1074 return -EINVAL;
1075 }
1076
1077 if (!etm->timeless_decoding)
1078 return -EINVAL;
1079
1080 if (sample->time && (sample->time != (u64) -1))
1081 timestamp = sample->time;
1082 else
1083 timestamp = 0;
1084
1085 if (timestamp || etm->timeless_decoding) {
1086 err = cs_etm__update_queues(etm);
1087 if (err)
1088 return err;
1089 }
1090
9f878b29
MP		 1091 if (event->header.type == PERF_RECORD_EXIT)
1092 return cs_etm__process_timeless_queues(etm,
1093 event->fork.tid,
1094 sample->time);
1095
440a23b3
MP		 1096 return 0;
1097}
1098
1099static int cs_etm__process_auxtrace_event(struct perf_session *session,
1100 union perf_event *event,
68ffe390 1101 struct perf_tool *tool __maybe_unused)
440a23b3 1102{
68ffe390
MP		 1103 struct cs_etm_auxtrace *etm = container_of(session->auxtrace,
1104 struct cs_etm_auxtrace,
1105 auxtrace);
1106 if (!etm->data_queued) {
1107 struct auxtrace_buffer *buffer;
1108 off_t data_offset;
1109 int fd = perf_data__fd(session->data);
1110 bool is_pipe = perf_data__is_pipe(session->data);
1111 int err;
1112
1113 if (is_pipe)
1114 data_offset = 0;
1115 else {
1116 data_offset = lseek(fd, 0, SEEK_CUR);
1117 if (data_offset == -1)
1118 return -errno;
1119 }
1120
1121 err = auxtrace_queues__add_event(&etm->queues, session,
1122 event, data_offset, &buffer);
1123 if (err)
1124 return err;
1125
1126 if (dump_trace)
1127 if (auxtrace_buffer__get_data(buffer, fd)) {
1128 cs_etm__dump_event(etm, buffer);
1129 auxtrace_buffer__put_data(buffer);
1130 }
1131 }
1132
440a23b3
MP		 1133 return 0;
1134}
1135
1136static bool cs_etm__is_timeless_decoding(struct cs_etm_auxtrace *etm)
1137{
1138 struct perf_evsel *evsel;
1139 struct perf_evlist *evlist = etm->session->evlist;
1140 bool timeless_decoding = true;
1141
1142 /*
1143 * Circle through the list of event and complain if we find one
1144 * with the time bit set.
1145 */
1146 evlist__for_each_entry(evlist, evsel) {
1147 if ((evsel->attr.sample_type & PERF_SAMPLE_TIME))
1148 timeless_decoding = false;
1149 }
1150
1151 return timeless_decoding;
1152}
1153
cd8bfd8c
TJ		 1154static const char * const cs_etm_global_header_fmts[] = {
1155 [CS_HEADER_VERSION_0] = " Header version %llx\n",
1156 [CS_PMU_TYPE_CPUS] = " PMU type/num cpus %llx\n",
1157 [CS_ETM_SNAPSHOT] = " Snapshot %llx\n",
1158};
1159
1160static const char * const cs_etm_priv_fmts[] = {
1161 [CS_ETM_MAGIC] = " Magic number %llx\n",
1162 [CS_ETM_CPU] = " CPU %lld\n",
1163 [CS_ETM_ETMCR] = " ETMCR %llx\n",
1164 [CS_ETM_ETMTRACEIDR] = " ETMTRACEIDR %llx\n",
1165 [CS_ETM_ETMCCER] = " ETMCCER %llx\n",
1166 [CS_ETM_ETMIDR] = " ETMIDR %llx\n",
1167};
1168
1169static const char * const cs_etmv4_priv_fmts[] = {
1170 [CS_ETM_MAGIC] = " Magic number %llx\n",
1171 [CS_ETM_CPU] = " CPU %lld\n",
1172 [CS_ETMV4_TRCCONFIGR] = " TRCCONFIGR %llx\n",
1173 [CS_ETMV4_TRCTRACEIDR] = " TRCTRACEIDR %llx\n",
1174 [CS_ETMV4_TRCIDR0] = " TRCIDR0 %llx\n",
1175 [CS_ETMV4_TRCIDR1] = " TRCIDR1 %llx\n",
1176 [CS_ETMV4_TRCIDR2] = " TRCIDR2 %llx\n",
1177 [CS_ETMV4_TRCIDR8] = " TRCIDR8 %llx\n",
1178 [CS_ETMV4_TRCAUTHSTATUS] = " TRCAUTHSTATUS %llx\n",
1179};
1180
1181static void cs_etm__print_auxtrace_info(u64 *val, int num)
1182{
1183 int i, j, cpu = 0;
1184
1185 for (i = 0; i < CS_HEADER_VERSION_0_MAX; i++)
1186 fprintf(stdout, cs_etm_global_header_fmts[i], val[i]);
1187
1188 for (i = CS_HEADER_VERSION_0_MAX; cpu < num; cpu++) {
1189 if (val[i] == __perf_cs_etmv3_magic)
1190 for (j = 0; j < CS_ETM_PRIV_MAX; j++, i++)
1191 fprintf(stdout, cs_etm_priv_fmts[j], val[i]);
1192 else if (val[i] == __perf_cs_etmv4_magic)
1193 for (j = 0; j < CS_ETMV4_PRIV_MAX; j++, i++)
1194 fprintf(stdout, cs_etmv4_priv_fmts[j], val[i]);
1195 else
1196 /* failure.. return */
1197 return;
1198 }
1199}
1200
440a23b3
MP		 1201int cs_etm__process_auxtrace_info(union perf_event *event,
1202 struct perf_session *session)
1203{
1204 struct auxtrace_info_event *auxtrace_info = &event->auxtrace_info;
1205 struct cs_etm_auxtrace *etm = NULL;
cd8bfd8c
TJ		 1206 struct int_node *inode;
1207 unsigned int pmu_type;
440a23b3
MP		 1208 int event_header_size = sizeof(struct perf_event_header);
1209 int info_header_size;
1210 int total_size = auxtrace_info->header.size;
cd8bfd8c
TJ		 1211 int priv_size = 0;
1212 int num_cpu;
1213 int err = 0, idx = -1;
1214 int i, j, k;
1215 u64 *ptr, *hdr = NULL;
1216 u64 **metadata = NULL;
440a23b3
MP		 1217
1218 /*
1219 * sizeof(auxtrace_info_event::type) +
1220 * sizeof(auxtrace_info_event::reserved) == 8
1221 */
1222 info_header_size = 8;
1223
1224 if (total_size < (event_header_size + info_header_size))
1225 return -EINVAL;
1226
cd8bfd8c
TJ		 1227 priv_size = total_size - event_header_size - info_header_size;
1228
1229 /* First the global part */
1230 ptr = (u64 *) auxtrace_info->priv;
1231
1232 /* Look for version '0' of the header */
1233 if (ptr[0] != 0)
1234 return -EINVAL;
1235
1236 hdr = zalloc(sizeof(*hdr) * CS_HEADER_VERSION_0_MAX);
1237 if (!hdr)
1238 return -ENOMEM;
1239
1240 /* Extract header information - see cs-etm.h for format */
1241 for (i = 0; i < CS_HEADER_VERSION_0_MAX; i++)
1242 hdr[i] = ptr[i];
1243 num_cpu = hdr[CS_PMU_TYPE_CPUS] & 0xffffffff;
1244 pmu_type = (unsigned int) ((hdr[CS_PMU_TYPE_CPUS] >> 32) &
1245 0xffffffff);
1246
1247 /*
1248 * Create an RB tree for traceID-CPU# tuple. Since the conversion has
1249 * to be made for each packet that gets decoded, optimizing access in
1250 * anything other than a sequential array is worth doing.
1251 */
1252 traceid_list = intlist__new(NULL);
1253 if (!traceid_list) {
1254 err = -ENOMEM;
1255 goto err_free_hdr;
1256 }
1257
1258 metadata = zalloc(sizeof(*metadata) * num_cpu);
1259 if (!metadata) {
1260 err = -ENOMEM;
1261 goto err_free_traceid_list;
1262 }
1263
1264 /*
1265 * The metadata is stored in the auxtrace_info section and encodes
1266 * the configuration of the ARM embedded trace macrocell which is
1267 * required by the trace decoder to properly decode the trace due
1268 * to its highly compressed nature.
1269 */
1270 for (j = 0; j < num_cpu; j++) {
1271 if (ptr[i] == __perf_cs_etmv3_magic) {
1272 metadata[j] = zalloc(sizeof(*metadata[j]) *
1273 CS_ETM_PRIV_MAX);
1274 if (!metadata[j]) {
1275 err = -ENOMEM;
1276 goto err_free_metadata;
1277 }
1278 for (k = 0; k < CS_ETM_PRIV_MAX; k++)
1279 metadata[j][k] = ptr[i + k];
1280
1281 /* The traceID is our handle */
1282 idx = metadata[j][CS_ETM_ETMTRACEIDR];
1283 i += CS_ETM_PRIV_MAX;
1284 } else if (ptr[i] == __perf_cs_etmv4_magic) {
1285 metadata[j] = zalloc(sizeof(*metadata[j]) *
1286 CS_ETMV4_PRIV_MAX);
1287 if (!metadata[j]) {
1288 err = -ENOMEM;
1289 goto err_free_metadata;
1290 }
1291 for (k = 0; k < CS_ETMV4_PRIV_MAX; k++)
1292 metadata[j][k] = ptr[i + k];
1293
1294 /* The traceID is our handle */
1295 idx = metadata[j][CS_ETMV4_TRCTRACEIDR];
1296 i += CS_ETMV4_PRIV_MAX;
1297 }
1298
1299 /* Get an RB node for this CPU */
1300 inode = intlist__findnew(traceid_list, idx);
1301
1302 /* Something went wrong, no need to continue */
1303 if (!inode) {
1304 err = PTR_ERR(inode);
1305 goto err_free_metadata;
1306 }
1307
1308 /*
1309 * The node for that CPU should not be taken.
1310 * Back out if that's the case.
1311 */
1312 if (inode->priv) {
1313 err = -EINVAL;
1314 goto err_free_metadata;
1315 }
1316 /* All good, associate the traceID with the CPU# */
1317 inode->priv = &metadata[j][CS_ETM_CPU];
1318 }
1319
1320 /*
1321 * Each of CS_HEADER_VERSION_0_MAX, CS_ETM_PRIV_MAX and
1322 * CS_ETMV4_PRIV_MAX mark how many double words are in the
1323 * global metadata, and each cpu's metadata respectively.
1324 * The following tests if the correct number of double words was
1325 * present in the auxtrace info section.
1326 */
1327 if (i * 8 != priv_size) {
1328 err = -EINVAL;
1329 goto err_free_metadata;
1330 }
1331
440a23b3
MP		 1332 etm = zalloc(sizeof(*etm));
1333
cd8bfd8c 1334 if (!etm) {
440a23b3 1335 err = -ENOMEM;
cd8bfd8c
TJ		 1336 goto err_free_metadata;
1337 }
440a23b3
MP		 1338
1339 err = auxtrace_queues__init(&etm->queues);
1340 if (err)
1341 goto err_free_etm;
1342
1343 etm->session = session;
1344 etm->machine = &session->machines.host;
1345
cd8bfd8c
TJ		 1346 etm->num_cpu = num_cpu;
1347 etm->pmu_type = pmu_type;
1348 etm->snapshot_mode = (hdr[CS_ETM_SNAPSHOT] != 0);
1349 etm->metadata = metadata;
440a23b3
MP		 1350 etm->auxtrace_type = auxtrace_info->type;
1351 etm->timeless_decoding = cs_etm__is_timeless_decoding(etm);
1352
1353 etm->auxtrace.process_event = cs_etm__process_event;
1354 etm->auxtrace.process_auxtrace_event = cs_etm__process_auxtrace_event;
1355 etm->auxtrace.flush_events = cs_etm__flush_events;
1356 etm->auxtrace.free_events = cs_etm__free_events;
1357 etm->auxtrace.free = cs_etm__free;
1358 session->auxtrace = &etm->auxtrace;
1359
cd8bfd8c
TJ		 1360 if (dump_trace) {
1361 cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
440a23b3 1362 return 0;
cd8bfd8c 1363 }
440a23b3 1364
b12235b1
MP		 1365 if (session->itrace_synth_opts && session->itrace_synth_opts->set) {
1366 etm->synth_opts = *session->itrace_synth_opts;
1367 } else {
1368 itrace_synth_opts__set_default(&etm->synth_opts);
1369 etm->synth_opts.callchain = false;
1370 }
1371
1372 err = cs_etm__synth_events(etm, session);
1373 if (err)
1374 goto err_free_queues;
1375
440a23b3
MP		 1376 err = auxtrace_queues__process_index(&etm->queues, session);
1377 if (err)
1378 goto err_free_queues;
1379
1380 etm->data_queued = etm->queues.populated;
1381
1382 return 0;
1383
1384err_free_queues:
1385 auxtrace_queues__free(&etm->queues);
1386 session->auxtrace = NULL;
1387err_free_etm:
1388 zfree(&etm);
cd8bfd8c
TJ		 1389err_free_metadata:
1390 /* No need to check @metadata[j], free(NULL) is supported */
1391 for (j = 0; j < num_cpu; j++)
1392 free(metadata[j]);
1393 zfree(&metadata);
1394err_free_traceid_list:
1395 intlist__delete(traceid_list);
1396err_free_hdr:
1397 zfree(&hdr);
440a23b3
MP		 1398
1399 return -EINVAL;
1400}
Linux 6.x block layer and io_uring tree(s)