1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/kernel.h>
5 #include <traceevent/event-parse.h>
10 #include <sys/types.h>
21 #include "perf_regs.h"
25 #include "thread-stack.h"
28 static int perf_session__deliver_event(struct perf_session
*session
,
29 union perf_event
*event
,
30 struct perf_sample
*sample
,
31 struct perf_tool
*tool
,
34 static int perf_session__open(struct perf_session
*session
)
36 struct perf_data_file
*file
= session
->file
;
38 if (perf_session__read_header(session
) < 0) {
39 pr_err("incompatible file format (rerun with -v to learn more)\n");
43 if (perf_data_file__is_pipe(file
))
46 if (perf_header__has_feat(&session
->header
, HEADER_STAT
))
49 if (!perf_evlist__valid_sample_type(session
->evlist
)) {
50 pr_err("non matching sample_type\n");
54 if (!perf_evlist__valid_sample_id_all(session
->evlist
)) {
55 pr_err("non matching sample_id_all\n");
59 if (!perf_evlist__valid_read_format(session
->evlist
)) {
60 pr_err("non matching read_format\n");
67 void perf_session__set_id_hdr_size(struct perf_session
*session
)
69 u16 id_hdr_size
= perf_evlist__id_hdr_size(session
->evlist
);
71 machines__set_id_hdr_size(&session
->machines
, id_hdr_size
);
74 int perf_session__create_kernel_maps(struct perf_session
*session
)
76 int ret
= machine__create_kernel_maps(&session
->machines
.host
);
79 ret
= machines__create_guest_kernel_maps(&session
->machines
);
83 static void perf_session__destroy_kernel_maps(struct perf_session
*session
)
85 machines__destroy_kernel_maps(&session
->machines
);
88 static bool perf_session__has_comm_exec(struct perf_session
*session
)
90 struct perf_evsel
*evsel
;
92 evlist__for_each_entry(session
->evlist
, evsel
) {
93 if (evsel
->attr
.comm_exec
)
100 static void perf_session__set_comm_exec(struct perf_session
*session
)
102 bool comm_exec
= perf_session__has_comm_exec(session
);
104 machines__set_comm_exec(&session
->machines
, comm_exec
);
107 static int ordered_events__deliver_event(struct ordered_events
*oe
,
108 struct ordered_event
*event
)
110 struct perf_sample sample
;
111 struct perf_session
*session
= container_of(oe
, struct perf_session
,
113 int ret
= perf_evlist__parse_sample(session
->evlist
, event
->event
, &sample
);
116 pr_err("Can't parse sample, err = %d\n", ret
);
120 return perf_session__deliver_event(session
, event
->event
, &sample
,
121 session
->tool
, event
->file_offset
);
124 struct perf_session
*perf_session__new(struct perf_data_file
*file
,
125 bool repipe
, struct perf_tool
*tool
)
127 struct perf_session
*session
= zalloc(sizeof(*session
));
132 session
->repipe
= repipe
;
133 session
->tool
= tool
;
134 INIT_LIST_HEAD(&session
->auxtrace_index
);
135 machines__init(&session
->machines
);
136 ordered_events__init(&session
->ordered_events
, ordered_events__deliver_event
);
139 if (perf_data_file__open(file
))
142 session
->file
= file
;
144 if (perf_data_file__is_read(file
)) {
145 if (perf_session__open(session
) < 0)
149 * set session attributes that are present in perf.data
150 * but not in pipe-mode.
152 if (!file
->is_pipe
) {
153 perf_session__set_id_hdr_size(session
);
154 perf_session__set_comm_exec(session
);
158 session
->machines
.host
.env
= &perf_env
;
161 if (!file
|| perf_data_file__is_write(file
)) {
163 * In O_RDONLY mode this will be performed when reading the
164 * kernel MMAP event, in perf_event__process_mmap().
166 if (perf_session__create_kernel_maps(session
) < 0)
167 pr_warning("Cannot read kernel map\n");
171 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
172 * processed, so perf_evlist__sample_id_all is not meaningful here.
174 if ((!file
|| !file
->is_pipe
) && tool
&& tool
->ordering_requires_timestamps
&&
175 tool
->ordered_events
&& !perf_evlist__sample_id_all(session
->evlist
)) {
176 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
177 tool
->ordered_events
= false;
183 perf_data_file__close(file
);
185 perf_session__delete(session
);
190 static void perf_session__delete_threads(struct perf_session
*session
)
192 machine__delete_threads(&session
->machines
.host
);
195 void perf_session__delete(struct perf_session
*session
)
199 auxtrace__free(session
);
200 auxtrace_index__free(&session
->auxtrace_index
);
201 perf_session__destroy_kernel_maps(session
);
202 perf_session__delete_threads(session
);
203 perf_env__exit(&session
->header
.env
);
204 machines__exit(&session
->machines
);
206 perf_data_file__close(session
->file
);
210 static int process_event_synth_tracing_data_stub(struct perf_tool
*tool
212 union perf_event
*event
214 struct perf_session
*session
217 dump_printf(": unhandled!\n");
221 static int process_event_synth_attr_stub(struct perf_tool
*tool __maybe_unused
,
222 union perf_event
*event __maybe_unused
,
223 struct perf_evlist
**pevlist
226 dump_printf(": unhandled!\n");
230 static int process_event_synth_event_update_stub(struct perf_tool
*tool __maybe_unused
,
231 union perf_event
*event __maybe_unused
,
232 struct perf_evlist
**pevlist
236 perf_event__fprintf_event_update(event
, stdout
);
238 dump_printf(": unhandled!\n");
242 static int process_event_sample_stub(struct perf_tool
*tool __maybe_unused
,
243 union perf_event
*event __maybe_unused
,
244 struct perf_sample
*sample __maybe_unused
,
245 struct perf_evsel
*evsel __maybe_unused
,
246 struct machine
*machine __maybe_unused
)
248 dump_printf(": unhandled!\n");
252 static int process_event_stub(struct perf_tool
*tool __maybe_unused
,
253 union perf_event
*event __maybe_unused
,
254 struct perf_sample
*sample __maybe_unused
,
255 struct machine
*machine __maybe_unused
)
257 dump_printf(": unhandled!\n");
261 static int process_finished_round_stub(struct perf_tool
*tool __maybe_unused
,
262 union perf_event
*event __maybe_unused
,
263 struct ordered_events
*oe __maybe_unused
)
265 dump_printf(": unhandled!\n");
269 static int process_finished_round(struct perf_tool
*tool
,
270 union perf_event
*event
,
271 struct ordered_events
*oe
);
273 static int skipn(int fd
, off_t n
)
279 ret
= read(fd
, buf
, min(n
, (off_t
)sizeof(buf
)));
288 static s64
process_event_auxtrace_stub(struct perf_tool
*tool __maybe_unused
,
289 union perf_event
*event
,
290 struct perf_session
*session
293 dump_printf(": unhandled!\n");
294 if (perf_data_file__is_pipe(session
->file
))
295 skipn(perf_data_file__fd(session
->file
), event
->auxtrace
.size
);
296 return event
->auxtrace
.size
;
299 static int process_event_op2_stub(struct perf_tool
*tool __maybe_unused
,
300 union perf_event
*event __maybe_unused
,
301 struct perf_session
*session __maybe_unused
)
303 dump_printf(": unhandled!\n");
309 int process_event_thread_map_stub(struct perf_tool
*tool __maybe_unused
,
310 union perf_event
*event __maybe_unused
,
311 struct perf_session
*session __maybe_unused
)
314 perf_event__fprintf_thread_map(event
, stdout
);
316 dump_printf(": unhandled!\n");
321 int process_event_cpu_map_stub(struct perf_tool
*tool __maybe_unused
,
322 union perf_event
*event __maybe_unused
,
323 struct perf_session
*session __maybe_unused
)
326 perf_event__fprintf_cpu_map(event
, stdout
);
328 dump_printf(": unhandled!\n");
333 int process_event_stat_config_stub(struct perf_tool
*tool __maybe_unused
,
334 union perf_event
*event __maybe_unused
,
335 struct perf_session
*session __maybe_unused
)
338 perf_event__fprintf_stat_config(event
, stdout
);
340 dump_printf(": unhandled!\n");
344 static int process_stat_stub(struct perf_tool
*tool __maybe_unused
,
345 union perf_event
*event __maybe_unused
,
346 struct perf_session
*perf_session
350 perf_event__fprintf_stat(event
, stdout
);
352 dump_printf(": unhandled!\n");
356 static int process_stat_round_stub(struct perf_tool
*tool __maybe_unused
,
357 union perf_event
*event __maybe_unused
,
358 struct perf_session
*perf_session
362 perf_event__fprintf_stat_round(event
, stdout
);
364 dump_printf(": unhandled!\n");
368 void perf_tool__fill_defaults(struct perf_tool
*tool
)
370 if (tool
->sample
== NULL
)
371 tool
->sample
= process_event_sample_stub
;
372 if (tool
->mmap
== NULL
)
373 tool
->mmap
= process_event_stub
;
374 if (tool
->mmap2
== NULL
)
375 tool
->mmap2
= process_event_stub
;
376 if (tool
->comm
== NULL
)
377 tool
->comm
= process_event_stub
;
378 if (tool
->namespaces
== NULL
)
379 tool
->namespaces
= process_event_stub
;
380 if (tool
->fork
== NULL
)
381 tool
->fork
= process_event_stub
;
382 if (tool
->exit
== NULL
)
383 tool
->exit
= process_event_stub
;
384 if (tool
->lost
== NULL
)
385 tool
->lost
= perf_event__process_lost
;
386 if (tool
->lost_samples
== NULL
)
387 tool
->lost_samples
= perf_event__process_lost_samples
;
388 if (tool
->aux
== NULL
)
389 tool
->aux
= perf_event__process_aux
;
390 if (tool
->itrace_start
== NULL
)
391 tool
->itrace_start
= perf_event__process_itrace_start
;
392 if (tool
->context_switch
== NULL
)
393 tool
->context_switch
= perf_event__process_switch
;
394 if (tool
->read
== NULL
)
395 tool
->read
= process_event_sample_stub
;
396 if (tool
->throttle
== NULL
)
397 tool
->throttle
= process_event_stub
;
398 if (tool
->unthrottle
== NULL
)
399 tool
->unthrottle
= process_event_stub
;
400 if (tool
->attr
== NULL
)
401 tool
->attr
= process_event_synth_attr_stub
;
402 if (tool
->event_update
== NULL
)
403 tool
->event_update
= process_event_synth_event_update_stub
;
404 if (tool
->tracing_data
== NULL
)
405 tool
->tracing_data
= process_event_synth_tracing_data_stub
;
406 if (tool
->build_id
== NULL
)
407 tool
->build_id
= process_event_op2_stub
;
408 if (tool
->finished_round
== NULL
) {
409 if (tool
->ordered_events
)
410 tool
->finished_round
= process_finished_round
;
412 tool
->finished_round
= process_finished_round_stub
;
414 if (tool
->id_index
== NULL
)
415 tool
->id_index
= process_event_op2_stub
;
416 if (tool
->auxtrace_info
== NULL
)
417 tool
->auxtrace_info
= process_event_op2_stub
;
418 if (tool
->auxtrace
== NULL
)
419 tool
->auxtrace
= process_event_auxtrace_stub
;
420 if (tool
->auxtrace_error
== NULL
)
421 tool
->auxtrace_error
= process_event_op2_stub
;
422 if (tool
->thread_map
== NULL
)
423 tool
->thread_map
= process_event_thread_map_stub
;
424 if (tool
->cpu_map
== NULL
)
425 tool
->cpu_map
= process_event_cpu_map_stub
;
426 if (tool
->stat_config
== NULL
)
427 tool
->stat_config
= process_event_stat_config_stub
;
428 if (tool
->stat
== NULL
)
429 tool
->stat
= process_stat_stub
;
430 if (tool
->stat_round
== NULL
)
431 tool
->stat_round
= process_stat_round_stub
;
432 if (tool
->time_conv
== NULL
)
433 tool
->time_conv
= process_event_op2_stub
;
434 if (tool
->feature
== NULL
)
435 tool
->feature
= process_event_op2_stub
;
438 static void swap_sample_id_all(union perf_event
*event
, void *data
)
440 void *end
= (void *) event
+ event
->header
.size
;
441 int size
= end
- data
;
443 BUG_ON(size
% sizeof(u64
));
444 mem_bswap_64(data
, size
);
447 static void perf_event__all64_swap(union perf_event
*event
,
448 bool sample_id_all __maybe_unused
)
450 struct perf_event_header
*hdr
= &event
->header
;
451 mem_bswap_64(hdr
+ 1, event
->header
.size
- sizeof(*hdr
));
454 static void perf_event__comm_swap(union perf_event
*event
, bool sample_id_all
)
456 event
->comm
.pid
= bswap_32(event
->comm
.pid
);
457 event
->comm
.tid
= bswap_32(event
->comm
.tid
);
460 void *data
= &event
->comm
.comm
;
462 data
+= PERF_ALIGN(strlen(data
) + 1, sizeof(u64
));
463 swap_sample_id_all(event
, data
);
467 static void perf_event__mmap_swap(union perf_event
*event
,
470 event
->mmap
.pid
= bswap_32(event
->mmap
.pid
);
471 event
->mmap
.tid
= bswap_32(event
->mmap
.tid
);
472 event
->mmap
.start
= bswap_64(event
->mmap
.start
);
473 event
->mmap
.len
= bswap_64(event
->mmap
.len
);
474 event
->mmap
.pgoff
= bswap_64(event
->mmap
.pgoff
);
477 void *data
= &event
->mmap
.filename
;
479 data
+= PERF_ALIGN(strlen(data
) + 1, sizeof(u64
));
480 swap_sample_id_all(event
, data
);
484 static void perf_event__mmap2_swap(union perf_event
*event
,
487 event
->mmap2
.pid
= bswap_32(event
->mmap2
.pid
);
488 event
->mmap2
.tid
= bswap_32(event
->mmap2
.tid
);
489 event
->mmap2
.start
= bswap_64(event
->mmap2
.start
);
490 event
->mmap2
.len
= bswap_64(event
->mmap2
.len
);
491 event
->mmap2
.pgoff
= bswap_64(event
->mmap2
.pgoff
);
492 event
->mmap2
.maj
= bswap_32(event
->mmap2
.maj
);
493 event
->mmap2
.min
= bswap_32(event
->mmap2
.min
);
494 event
->mmap2
.ino
= bswap_64(event
->mmap2
.ino
);
497 void *data
= &event
->mmap2
.filename
;
499 data
+= PERF_ALIGN(strlen(data
) + 1, sizeof(u64
));
500 swap_sample_id_all(event
, data
);
503 static void perf_event__task_swap(union perf_event
*event
, bool sample_id_all
)
505 event
->fork
.pid
= bswap_32(event
->fork
.pid
);
506 event
->fork
.tid
= bswap_32(event
->fork
.tid
);
507 event
->fork
.ppid
= bswap_32(event
->fork
.ppid
);
508 event
->fork
.ptid
= bswap_32(event
->fork
.ptid
);
509 event
->fork
.time
= bswap_64(event
->fork
.time
);
512 swap_sample_id_all(event
, &event
->fork
+ 1);
515 static void perf_event__read_swap(union perf_event
*event
, bool sample_id_all
)
517 event
->read
.pid
= bswap_32(event
->read
.pid
);
518 event
->read
.tid
= bswap_32(event
->read
.tid
);
519 event
->read
.value
= bswap_64(event
->read
.value
);
520 event
->read
.time_enabled
= bswap_64(event
->read
.time_enabled
);
521 event
->read
.time_running
= bswap_64(event
->read
.time_running
);
522 event
->read
.id
= bswap_64(event
->read
.id
);
525 swap_sample_id_all(event
, &event
->read
+ 1);
528 static void perf_event__aux_swap(union perf_event
*event
, bool sample_id_all
)
530 event
->aux
.aux_offset
= bswap_64(event
->aux
.aux_offset
);
531 event
->aux
.aux_size
= bswap_64(event
->aux
.aux_size
);
532 event
->aux
.flags
= bswap_64(event
->aux
.flags
);
535 swap_sample_id_all(event
, &event
->aux
+ 1);
538 static void perf_event__itrace_start_swap(union perf_event
*event
,
541 event
->itrace_start
.pid
= bswap_32(event
->itrace_start
.pid
);
542 event
->itrace_start
.tid
= bswap_32(event
->itrace_start
.tid
);
545 swap_sample_id_all(event
, &event
->itrace_start
+ 1);
548 static void perf_event__switch_swap(union perf_event
*event
, bool sample_id_all
)
550 if (event
->header
.type
== PERF_RECORD_SWITCH_CPU_WIDE
) {
551 event
->context_switch
.next_prev_pid
=
552 bswap_32(event
->context_switch
.next_prev_pid
);
553 event
->context_switch
.next_prev_tid
=
554 bswap_32(event
->context_switch
.next_prev_tid
);
558 swap_sample_id_all(event
, &event
->context_switch
+ 1);
561 static void perf_event__throttle_swap(union perf_event
*event
,
564 event
->throttle
.time
= bswap_64(event
->throttle
.time
);
565 event
->throttle
.id
= bswap_64(event
->throttle
.id
);
566 event
->throttle
.stream_id
= bswap_64(event
->throttle
.stream_id
);
569 swap_sample_id_all(event
, &event
->throttle
+ 1);
572 static u8
revbyte(u8 b
)
574 int rev
= (b
>> 4) | ((b
& 0xf) << 4);
575 rev
= ((rev
& 0xcc) >> 2) | ((rev
& 0x33) << 2);
576 rev
= ((rev
& 0xaa) >> 1) | ((rev
& 0x55) << 1);
581 * XXX this is hack in attempt to carry flags bitfield
582 * through endian village. ABI says:
584 * Bit-fields are allocated from right to left (least to most significant)
585 * on little-endian implementations and from left to right (most to least
586 * significant) on big-endian implementations.
588 * The above seems to be byte specific, so we need to reverse each
589 * byte of the bitfield. 'Internet' also says this might be implementation
590 * specific and we probably need proper fix and carry perf_event_attr
591 * bitfield flags in separate data file FEAT_ section. Thought this seems
594 static void swap_bitfield(u8
*p
, unsigned len
)
598 for (i
= 0; i
< len
; i
++) {
604 /* exported for swapping attributes in file header */
605 void perf_event__attr_swap(struct perf_event_attr
*attr
)
607 attr
->type
= bswap_32(attr
->type
);
608 attr
->size
= bswap_32(attr
->size
);
610 #define bswap_safe(f, n) \
611 (attr->size > (offsetof(struct perf_event_attr, f) + \
612 sizeof(attr->f) * (n)))
613 #define bswap_field(f, sz) \
615 if (bswap_safe(f, 0)) \
616 attr->f = bswap_##sz(attr->f); \
618 #define bswap_field_16(f) bswap_field(f, 16)
619 #define bswap_field_32(f) bswap_field(f, 32)
620 #define bswap_field_64(f) bswap_field(f, 64)
622 bswap_field_64(config
);
623 bswap_field_64(sample_period
);
624 bswap_field_64(sample_type
);
625 bswap_field_64(read_format
);
626 bswap_field_32(wakeup_events
);
627 bswap_field_32(bp_type
);
628 bswap_field_64(bp_addr
);
629 bswap_field_64(bp_len
);
630 bswap_field_64(branch_sample_type
);
631 bswap_field_64(sample_regs_user
);
632 bswap_field_32(sample_stack_user
);
633 bswap_field_32(aux_watermark
);
634 bswap_field_16(sample_max_stack
);
637 * After read_format are bitfields. Check read_format because
638 * we are unable to use offsetof on bitfield.
640 if (bswap_safe(read_format
, 1))
641 swap_bitfield((u8
*) (&attr
->read_format
+ 1),
643 #undef bswap_field_64
644 #undef bswap_field_32
649 static void perf_event__hdr_attr_swap(union perf_event
*event
,
650 bool sample_id_all __maybe_unused
)
654 perf_event__attr_swap(&event
->attr
.attr
);
656 size
= event
->header
.size
;
657 size
-= (void *)&event
->attr
.id
- (void *)event
;
658 mem_bswap_64(event
->attr
.id
, size
);
661 static void perf_event__event_update_swap(union perf_event
*event
,
662 bool sample_id_all __maybe_unused
)
664 event
->event_update
.type
= bswap_64(event
->event_update
.type
);
665 event
->event_update
.id
= bswap_64(event
->event_update
.id
);
668 static void perf_event__event_type_swap(union perf_event
*event
,
669 bool sample_id_all __maybe_unused
)
671 event
->event_type
.event_type
.event_id
=
672 bswap_64(event
->event_type
.event_type
.event_id
);
675 static void perf_event__tracing_data_swap(union perf_event
*event
,
676 bool sample_id_all __maybe_unused
)
678 event
->tracing_data
.size
= bswap_32(event
->tracing_data
.size
);
681 static void perf_event__auxtrace_info_swap(union perf_event
*event
,
682 bool sample_id_all __maybe_unused
)
686 event
->auxtrace_info
.type
= bswap_32(event
->auxtrace_info
.type
);
688 size
= event
->header
.size
;
689 size
-= (void *)&event
->auxtrace_info
.priv
- (void *)event
;
690 mem_bswap_64(event
->auxtrace_info
.priv
, size
);
693 static void perf_event__auxtrace_swap(union perf_event
*event
,
694 bool sample_id_all __maybe_unused
)
696 event
->auxtrace
.size
= bswap_64(event
->auxtrace
.size
);
697 event
->auxtrace
.offset
= bswap_64(event
->auxtrace
.offset
);
698 event
->auxtrace
.reference
= bswap_64(event
->auxtrace
.reference
);
699 event
->auxtrace
.idx
= bswap_32(event
->auxtrace
.idx
);
700 event
->auxtrace
.tid
= bswap_32(event
->auxtrace
.tid
);
701 event
->auxtrace
.cpu
= bswap_32(event
->auxtrace
.cpu
);
704 static void perf_event__auxtrace_error_swap(union perf_event
*event
,
705 bool sample_id_all __maybe_unused
)
707 event
->auxtrace_error
.type
= bswap_32(event
->auxtrace_error
.type
);
708 event
->auxtrace_error
.code
= bswap_32(event
->auxtrace_error
.code
);
709 event
->auxtrace_error
.cpu
= bswap_32(event
->auxtrace_error
.cpu
);
710 event
->auxtrace_error
.pid
= bswap_32(event
->auxtrace_error
.pid
);
711 event
->auxtrace_error
.tid
= bswap_32(event
->auxtrace_error
.tid
);
712 event
->auxtrace_error
.ip
= bswap_64(event
->auxtrace_error
.ip
);
715 static void perf_event__thread_map_swap(union perf_event
*event
,
716 bool sample_id_all __maybe_unused
)
720 event
->thread_map
.nr
= bswap_64(event
->thread_map
.nr
);
722 for (i
= 0; i
< event
->thread_map
.nr
; i
++)
723 event
->thread_map
.entries
[i
].pid
= bswap_64(event
->thread_map
.entries
[i
].pid
);
726 static void perf_event__cpu_map_swap(union perf_event
*event
,
727 bool sample_id_all __maybe_unused
)
729 struct cpu_map_data
*data
= &event
->cpu_map
.data
;
730 struct cpu_map_entries
*cpus
;
731 struct cpu_map_mask
*mask
;
734 data
->type
= bswap_64(data
->type
);
736 switch (data
->type
) {
737 case PERF_CPU_MAP__CPUS
:
738 cpus
= (struct cpu_map_entries
*)data
->data
;
740 cpus
->nr
= bswap_16(cpus
->nr
);
742 for (i
= 0; i
< cpus
->nr
; i
++)
743 cpus
->cpu
[i
] = bswap_16(cpus
->cpu
[i
]);
745 case PERF_CPU_MAP__MASK
:
746 mask
= (struct cpu_map_mask
*) data
->data
;
748 mask
->nr
= bswap_16(mask
->nr
);
749 mask
->long_size
= bswap_16(mask
->long_size
);
751 switch (mask
->long_size
) {
752 case 4: mem_bswap_32(&mask
->mask
, mask
->nr
); break;
753 case 8: mem_bswap_64(&mask
->mask
, mask
->nr
); break;
755 pr_err("cpu_map swap: unsupported long size\n");
762 static void perf_event__stat_config_swap(union perf_event
*event
,
763 bool sample_id_all __maybe_unused
)
767 size
= event
->stat_config
.nr
* sizeof(event
->stat_config
.data
[0]);
768 size
+= 1; /* nr item itself */
769 mem_bswap_64(&event
->stat_config
.nr
, size
);
772 static void perf_event__stat_swap(union perf_event
*event
,
773 bool sample_id_all __maybe_unused
)
775 event
->stat
.id
= bswap_64(event
->stat
.id
);
776 event
->stat
.thread
= bswap_32(event
->stat
.thread
);
777 event
->stat
.cpu
= bswap_32(event
->stat
.cpu
);
778 event
->stat
.val
= bswap_64(event
->stat
.val
);
779 event
->stat
.ena
= bswap_64(event
->stat
.ena
);
780 event
->stat
.run
= bswap_64(event
->stat
.run
);
783 static void perf_event__stat_round_swap(union perf_event
*event
,
784 bool sample_id_all __maybe_unused
)
786 event
->stat_round
.type
= bswap_64(event
->stat_round
.type
);
787 event
->stat_round
.time
= bswap_64(event
->stat_round
.time
);
790 typedef void (*perf_event__swap_op
)(union perf_event
*event
,
793 static perf_event__swap_op perf_event__swap_ops
[] = {
794 [PERF_RECORD_MMAP
] = perf_event__mmap_swap
,
795 [PERF_RECORD_MMAP2
] = perf_event__mmap2_swap
,
796 [PERF_RECORD_COMM
] = perf_event__comm_swap
,
797 [PERF_RECORD_FORK
] = perf_event__task_swap
,
798 [PERF_RECORD_EXIT
] = perf_event__task_swap
,
799 [PERF_RECORD_LOST
] = perf_event__all64_swap
,
800 [PERF_RECORD_READ
] = perf_event__read_swap
,
801 [PERF_RECORD_THROTTLE
] = perf_event__throttle_swap
,
802 [PERF_RECORD_UNTHROTTLE
] = perf_event__throttle_swap
,
803 [PERF_RECORD_SAMPLE
] = perf_event__all64_swap
,
804 [PERF_RECORD_AUX
] = perf_event__aux_swap
,
805 [PERF_RECORD_ITRACE_START
] = perf_event__itrace_start_swap
,
806 [PERF_RECORD_LOST_SAMPLES
] = perf_event__all64_swap
,
807 [PERF_RECORD_SWITCH
] = perf_event__switch_swap
,
808 [PERF_RECORD_SWITCH_CPU_WIDE
] = perf_event__switch_swap
,
809 [PERF_RECORD_HEADER_ATTR
] = perf_event__hdr_attr_swap
,
810 [PERF_RECORD_HEADER_EVENT_TYPE
] = perf_event__event_type_swap
,
811 [PERF_RECORD_HEADER_TRACING_DATA
] = perf_event__tracing_data_swap
,
812 [PERF_RECORD_HEADER_BUILD_ID
] = NULL
,
813 [PERF_RECORD_ID_INDEX
] = perf_event__all64_swap
,
814 [PERF_RECORD_AUXTRACE_INFO
] = perf_event__auxtrace_info_swap
,
815 [PERF_RECORD_AUXTRACE
] = perf_event__auxtrace_swap
,
816 [PERF_RECORD_AUXTRACE_ERROR
] = perf_event__auxtrace_error_swap
,
817 [PERF_RECORD_THREAD_MAP
] = perf_event__thread_map_swap
,
818 [PERF_RECORD_CPU_MAP
] = perf_event__cpu_map_swap
,
819 [PERF_RECORD_STAT_CONFIG
] = perf_event__stat_config_swap
,
820 [PERF_RECORD_STAT
] = perf_event__stat_swap
,
821 [PERF_RECORD_STAT_ROUND
] = perf_event__stat_round_swap
,
822 [PERF_RECORD_EVENT_UPDATE
] = perf_event__event_update_swap
,
823 [PERF_RECORD_TIME_CONV
] = perf_event__all64_swap
,
824 [PERF_RECORD_HEADER_MAX
] = NULL
,
828 * When perf record finishes a pass on every buffers, it records this pseudo
830 * We record the max timestamp t found in the pass n.
831 * Assuming these timestamps are monotonic across cpus, we know that if
832 * a buffer still has events with timestamps below t, they will be all
833 * available and then read in the pass n + 1.
834 * Hence when we start to read the pass n + 2, we can safely flush every
835 * events with timestamps below t.
837 * ============ PASS n =================
840 * cnt1 timestamps | cnt2 timestamps
843 * - | 4 <--- max recorded
845 * ============ PASS n + 1 ==============
848 * cnt1 timestamps | cnt2 timestamps
851 * 5 | 7 <---- max recorded
853 * Flush every events below timestamp 4
855 * ============ PASS n + 2 ==============
858 * cnt1 timestamps | cnt2 timestamps
863 * Flush every events below timestamp 7
866 static int process_finished_round(struct perf_tool
*tool __maybe_unused
,
867 union perf_event
*event __maybe_unused
,
868 struct ordered_events
*oe
)
871 fprintf(stdout
, "\n");
872 return ordered_events__flush(oe
, OE_FLUSH__ROUND
);
875 int perf_session__queue_event(struct perf_session
*s
, union perf_event
*event
,
876 struct perf_sample
*sample
, u64 file_offset
)
878 return ordered_events__queue(&s
->ordered_events
, event
, sample
, file_offset
);
881 static void callchain__lbr_callstack_printf(struct perf_sample
*sample
)
883 struct ip_callchain
*callchain
= sample
->callchain
;
884 struct branch_stack
*lbr_stack
= sample
->branch_stack
;
885 u64 kernel_callchain_nr
= callchain
->nr
;
888 for (i
= 0; i
< kernel_callchain_nr
; i
++) {
889 if (callchain
->ips
[i
] == PERF_CONTEXT_USER
)
893 if ((i
!= kernel_callchain_nr
) && lbr_stack
->nr
) {
896 * LBR callstack can only get user call chain,
897 * i is kernel call chain number,
898 * 1 is PERF_CONTEXT_USER.
900 * The user call chain is stored in LBR registers.
901 * LBR are pair registers. The caller is stored
902 * in "from" register, while the callee is stored
904 * For example, there is a call stack
905 * "A"->"B"->"C"->"D".
906 * The LBR registers will recorde like
907 * "C"->"D", "B"->"C", "A"->"B".
908 * So only the first "to" register and all "from"
909 * registers are needed to construct the whole stack.
911 total_nr
= i
+ 1 + lbr_stack
->nr
+ 1;
912 kernel_callchain_nr
= i
+ 1;
914 printf("... LBR call chain: nr:%" PRIu64
"\n", total_nr
);
916 for (i
= 0; i
< kernel_callchain_nr
; i
++)
917 printf("..... %2d: %016" PRIx64
"\n",
918 i
, callchain
->ips
[i
]);
920 printf("..... %2d: %016" PRIx64
"\n",
921 (int)(kernel_callchain_nr
), lbr_stack
->entries
[0].to
);
922 for (i
= 0; i
< lbr_stack
->nr
; i
++)
923 printf("..... %2d: %016" PRIx64
"\n",
924 (int)(i
+ kernel_callchain_nr
+ 1), lbr_stack
->entries
[i
].from
);
928 static void callchain__printf(struct perf_evsel
*evsel
,
929 struct perf_sample
*sample
)
932 struct ip_callchain
*callchain
= sample
->callchain
;
934 if (perf_evsel__has_branch_callstack(evsel
))
935 callchain__lbr_callstack_printf(sample
);
937 printf("... FP chain: nr:%" PRIu64
"\n", callchain
->nr
);
939 for (i
= 0; i
< callchain
->nr
; i
++)
940 printf("..... %2d: %016" PRIx64
"\n",
941 i
, callchain
->ips
[i
]);
944 static void branch_stack__printf(struct perf_sample
*sample
)
948 printf("... branch stack: nr:%" PRIu64
"\n", sample
->branch_stack
->nr
);
950 for (i
= 0; i
< sample
->branch_stack
->nr
; i
++) {
951 struct branch_entry
*e
= &sample
->branch_stack
->entries
[i
];
953 printf("..... %2"PRIu64
": %016" PRIx64
" -> %016" PRIx64
" %hu cycles %s%s%s%s %x\n",
955 (unsigned short)e
->flags
.cycles
,
956 e
->flags
.mispred
? "M" : " ",
957 e
->flags
.predicted
? "P" : " ",
958 e
->flags
.abort
? "A" : " ",
959 e
->flags
.in_tx
? "T" : " ",
960 (unsigned)e
->flags
.reserved
);
964 static void regs_dump__printf(u64 mask
, u64
*regs
)
968 for_each_set_bit(rid
, (unsigned long *) &mask
, sizeof(mask
) * 8) {
971 printf(".... %-5s 0x%" PRIx64
"\n",
972 perf_reg_name(rid
), val
);
976 static const char *regs_abi
[] = {
977 [PERF_SAMPLE_REGS_ABI_NONE
] = "none",
978 [PERF_SAMPLE_REGS_ABI_32
] = "32-bit",
979 [PERF_SAMPLE_REGS_ABI_64
] = "64-bit",
982 static inline const char *regs_dump_abi(struct regs_dump
*d
)
984 if (d
->abi
> PERF_SAMPLE_REGS_ABI_64
)
987 return regs_abi
[d
->abi
];
990 static void regs__printf(const char *type
, struct regs_dump
*regs
)
992 u64 mask
= regs
->mask
;
994 printf("... %s regs: mask 0x%" PRIx64
" ABI %s\n",
997 regs_dump_abi(regs
));
999 regs_dump__printf(mask
, regs
->regs
);
1002 static void regs_user__printf(struct perf_sample
*sample
)
1004 struct regs_dump
*user_regs
= &sample
->user_regs
;
1006 if (user_regs
->regs
)
1007 regs__printf("user", user_regs
);
1010 static void regs_intr__printf(struct perf_sample
*sample
)
1012 struct regs_dump
*intr_regs
= &sample
->intr_regs
;
1014 if (intr_regs
->regs
)
1015 regs__printf("intr", intr_regs
);
1018 static void stack_user__printf(struct stack_dump
*dump
)
1020 printf("... ustack: size %" PRIu64
", offset 0x%x\n",
1021 dump
->size
, dump
->offset
);
1024 static void perf_evlist__print_tstamp(struct perf_evlist
*evlist
,
1025 union perf_event
*event
,
1026 struct perf_sample
*sample
)
1028 u64 sample_type
= __perf_evlist__combined_sample_type(evlist
);
1030 if (event
->header
.type
!= PERF_RECORD_SAMPLE
&&
1031 !perf_evlist__sample_id_all(evlist
)) {
1032 fputs("-1 -1 ", stdout
);
1036 if ((sample_type
& PERF_SAMPLE_CPU
))
1037 printf("%u ", sample
->cpu
);
1039 if (sample_type
& PERF_SAMPLE_TIME
)
1040 printf("%" PRIu64
" ", sample
->time
);
1043 static void sample_read__printf(struct perf_sample
*sample
, u64 read_format
)
1045 printf("... sample_read:\n");
1047 if (read_format
& PERF_FORMAT_TOTAL_TIME_ENABLED
)
1048 printf("...... time enabled %016" PRIx64
"\n",
1049 sample
->read
.time_enabled
);
1051 if (read_format
& PERF_FORMAT_TOTAL_TIME_RUNNING
)
1052 printf("...... time running %016" PRIx64
"\n",
1053 sample
->read
.time_running
);
1055 if (read_format
& PERF_FORMAT_GROUP
) {
1058 printf(".... group nr %" PRIu64
"\n", sample
->read
.group
.nr
);
1060 for (i
= 0; i
< sample
->read
.group
.nr
; i
++) {
1061 struct sample_read_value
*value
;
1063 value
= &sample
->read
.group
.values
[i
];
1064 printf("..... id %016" PRIx64
1065 ", value %016" PRIx64
"\n",
1066 value
->id
, value
->value
);
1069 printf("..... id %016" PRIx64
", value %016" PRIx64
"\n",
1070 sample
->read
.one
.id
, sample
->read
.one
.value
);
1073 static void dump_event(struct perf_evlist
*evlist
, union perf_event
*event
,
1074 u64 file_offset
, struct perf_sample
*sample
)
1079 printf("\n%#" PRIx64
" [%#x]: event: %d\n",
1080 file_offset
, event
->header
.size
, event
->header
.type
);
1085 perf_evlist__print_tstamp(evlist
, event
, sample
);
1087 printf("%#" PRIx64
" [%#x]: PERF_RECORD_%s", file_offset
,
1088 event
->header
.size
, perf_event__name(event
->header
.type
));
1091 static void dump_sample(struct perf_evsel
*evsel
, union perf_event
*event
,
1092 struct perf_sample
*sample
)
1099 printf("(IP, 0x%x): %d/%d: %#" PRIx64
" period: %" PRIu64
" addr: %#" PRIx64
"\n",
1100 event
->header
.misc
, sample
->pid
, sample
->tid
, sample
->ip
,
1101 sample
->period
, sample
->addr
);
1103 sample_type
= evsel
->attr
.sample_type
;
1105 if (sample_type
& PERF_SAMPLE_CALLCHAIN
)
1106 callchain__printf(evsel
, sample
);
1108 if ((sample_type
& PERF_SAMPLE_BRANCH_STACK
) && !perf_evsel__has_branch_callstack(evsel
))
1109 branch_stack__printf(sample
);
1111 if (sample_type
& PERF_SAMPLE_REGS_USER
)
1112 regs_user__printf(sample
);
1114 if (sample_type
& PERF_SAMPLE_REGS_INTR
)
1115 regs_intr__printf(sample
);
1117 if (sample_type
& PERF_SAMPLE_STACK_USER
)
1118 stack_user__printf(&sample
->user_stack
);
1120 if (sample_type
& PERF_SAMPLE_WEIGHT
)
1121 printf("... weight: %" PRIu64
"\n", sample
->weight
);
1123 if (sample_type
& PERF_SAMPLE_DATA_SRC
)
1124 printf(" . data_src: 0x%"PRIx64
"\n", sample
->data_src
);
1126 if (sample_type
& PERF_SAMPLE_PHYS_ADDR
)
1127 printf(" .. phys_addr: 0x%"PRIx64
"\n", sample
->phys_addr
);
1129 if (sample_type
& PERF_SAMPLE_TRANSACTION
)
1130 printf("... transaction: %" PRIx64
"\n", sample
->transaction
);
1132 if (sample_type
& PERF_SAMPLE_READ
)
1133 sample_read__printf(sample
, evsel
->attr
.read_format
);
1136 static void dump_read(struct perf_evsel
*evsel
, union perf_event
*event
)
1138 struct read_event
*read_event
= &event
->read
;
1144 printf(": %d %d %s %" PRIu64
"\n", event
->read
.pid
, event
->read
.tid
,
1145 evsel
? perf_evsel__name(evsel
) : "FAIL",
1148 read_format
= evsel
->attr
.read_format
;
1150 if (read_format
& PERF_FORMAT_TOTAL_TIME_ENABLED
)
1151 printf("... time enabled : %" PRIu64
"\n", read_event
->time_enabled
);
1153 if (read_format
& PERF_FORMAT_TOTAL_TIME_RUNNING
)
1154 printf("... time running : %" PRIu64
"\n", read_event
->time_running
);
1156 if (read_format
& PERF_FORMAT_ID
)
1157 printf("... id : %" PRIu64
"\n", read_event
->id
);
1160 static struct machine
*machines__find_for_cpumode(struct machines
*machines
,
1161 union perf_event
*event
,
1162 struct perf_sample
*sample
)
1164 struct machine
*machine
;
1167 ((sample
->cpumode
== PERF_RECORD_MISC_GUEST_KERNEL
) ||
1168 (sample
->cpumode
== PERF_RECORD_MISC_GUEST_USER
))) {
1171 if (event
->header
.type
== PERF_RECORD_MMAP
1172 || event
->header
.type
== PERF_RECORD_MMAP2
)
1173 pid
= event
->mmap
.pid
;
1177 machine
= machines__find(machines
, pid
);
1179 machine
= machines__findnew(machines
, DEFAULT_GUEST_KERNEL_ID
);
1183 return &machines
->host
;
1186 static int deliver_sample_value(struct perf_evlist
*evlist
,
1187 struct perf_tool
*tool
,
1188 union perf_event
*event
,
1189 struct perf_sample
*sample
,
1190 struct sample_read_value
*v
,
1191 struct machine
*machine
)
1193 struct perf_sample_id
*sid
= perf_evlist__id2sid(evlist
, v
->id
);
1197 sample
->period
= v
->value
- sid
->period
;
1198 sid
->period
= v
->value
;
1201 if (!sid
|| sid
->evsel
== NULL
) {
1202 ++evlist
->stats
.nr_unknown_id
;
1206 return tool
->sample(tool
, event
, sample
, sid
->evsel
, machine
);
1209 static int deliver_sample_group(struct perf_evlist
*evlist
,
1210 struct perf_tool
*tool
,
1211 union perf_event
*event
,
1212 struct perf_sample
*sample
,
1213 struct machine
*machine
)
1218 for (i
= 0; i
< sample
->read
.group
.nr
; i
++) {
1219 ret
= deliver_sample_value(evlist
, tool
, event
, sample
,
1220 &sample
->read
.group
.values
[i
],
1230 perf_evlist__deliver_sample(struct perf_evlist
*evlist
,
1231 struct perf_tool
*tool
,
1232 union perf_event
*event
,
1233 struct perf_sample
*sample
,
1234 struct perf_evsel
*evsel
,
1235 struct machine
*machine
)
1237 /* We know evsel != NULL. */
1238 u64 sample_type
= evsel
->attr
.sample_type
;
1239 u64 read_format
= evsel
->attr
.read_format
;
1241 /* Standard sample delivery. */
1242 if (!(sample_type
& PERF_SAMPLE_READ
))
1243 return tool
->sample(tool
, event
, sample
, evsel
, machine
);
1245 /* For PERF_SAMPLE_READ we have either single or group mode. */
1246 if (read_format
& PERF_FORMAT_GROUP
)
1247 return deliver_sample_group(evlist
, tool
, event
, sample
,
1250 return deliver_sample_value(evlist
, tool
, event
, sample
,
1251 &sample
->read
.one
, machine
);
1254 static int machines__deliver_event(struct machines
*machines
,
1255 struct perf_evlist
*evlist
,
1256 union perf_event
*event
,
1257 struct perf_sample
*sample
,
1258 struct perf_tool
*tool
, u64 file_offset
)
1260 struct perf_evsel
*evsel
;
1261 struct machine
*machine
;
1263 dump_event(evlist
, event
, file_offset
, sample
);
1265 evsel
= perf_evlist__id2evsel(evlist
, sample
->id
);
1267 machine
= machines__find_for_cpumode(machines
, event
, sample
);
1269 switch (event
->header
.type
) {
1270 case PERF_RECORD_SAMPLE
:
1271 if (evsel
== NULL
) {
1272 ++evlist
->stats
.nr_unknown_id
;
1275 dump_sample(evsel
, event
, sample
);
1276 if (machine
== NULL
) {
1277 ++evlist
->stats
.nr_unprocessable_samples
;
1280 return perf_evlist__deliver_sample(evlist
, tool
, event
, sample
, evsel
, machine
);
1281 case PERF_RECORD_MMAP
:
1282 return tool
->mmap(tool
, event
, sample
, machine
);
1283 case PERF_RECORD_MMAP2
:
1284 if (event
->header
.misc
& PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT
)
1285 ++evlist
->stats
.nr_proc_map_timeout
;
1286 return tool
->mmap2(tool
, event
, sample
, machine
);
1287 case PERF_RECORD_COMM
:
1288 return tool
->comm(tool
, event
, sample
, machine
);
1289 case PERF_RECORD_NAMESPACES
:
1290 return tool
->namespaces(tool
, event
, sample
, machine
);
1291 case PERF_RECORD_FORK
:
1292 return tool
->fork(tool
, event
, sample
, machine
);
1293 case PERF_RECORD_EXIT
:
1294 return tool
->exit(tool
, event
, sample
, machine
);
1295 case PERF_RECORD_LOST
:
1296 if (tool
->lost
== perf_event__process_lost
)
1297 evlist
->stats
.total_lost
+= event
->lost
.lost
;
1298 return tool
->lost(tool
, event
, sample
, machine
);
1299 case PERF_RECORD_LOST_SAMPLES
:
1300 if (tool
->lost_samples
== perf_event__process_lost_samples
)
1301 evlist
->stats
.total_lost_samples
+= event
->lost_samples
.lost
;
1302 return tool
->lost_samples(tool
, event
, sample
, machine
);
1303 case PERF_RECORD_READ
:
1304 dump_read(evsel
, event
);
1305 return tool
->read(tool
, event
, sample
, evsel
, machine
);
1306 case PERF_RECORD_THROTTLE
:
1307 return tool
->throttle(tool
, event
, sample
, machine
);
1308 case PERF_RECORD_UNTHROTTLE
:
1309 return tool
->unthrottle(tool
, event
, sample
, machine
);
1310 case PERF_RECORD_AUX
:
1311 if (tool
->aux
== perf_event__process_aux
) {
1312 if (event
->aux
.flags
& PERF_AUX_FLAG_TRUNCATED
)
1313 evlist
->stats
.total_aux_lost
+= 1;
1314 if (event
->aux
.flags
& PERF_AUX_FLAG_PARTIAL
)
1315 evlist
->stats
.total_aux_partial
+= 1;
1317 return tool
->aux(tool
, event
, sample
, machine
);
1318 case PERF_RECORD_ITRACE_START
:
1319 return tool
->itrace_start(tool
, event
, sample
, machine
);
1320 case PERF_RECORD_SWITCH
:
1321 case PERF_RECORD_SWITCH_CPU_WIDE
:
1322 return tool
->context_switch(tool
, event
, sample
, machine
);
1324 ++evlist
->stats
.nr_unknown_events
;
1329 static int perf_session__deliver_event(struct perf_session
*session
,
1330 union perf_event
*event
,
1331 struct perf_sample
*sample
,
1332 struct perf_tool
*tool
,
1337 ret
= auxtrace__process_event(session
, event
, sample
, tool
);
1343 return machines__deliver_event(&session
->machines
, session
->evlist
,
1344 event
, sample
, tool
, file_offset
);
1347 static s64
perf_session__process_user_event(struct perf_session
*session
,
1348 union perf_event
*event
,
1351 struct ordered_events
*oe
= &session
->ordered_events
;
1352 struct perf_tool
*tool
= session
->tool
;
1353 int fd
= perf_data_file__fd(session
->file
);
1356 dump_event(session
->evlist
, event
, file_offset
, NULL
);
1358 /* These events are processed right away */
1359 switch (event
->header
.type
) {
1360 case PERF_RECORD_HEADER_ATTR
:
1361 err
= tool
->attr(tool
, event
, &session
->evlist
);
1363 perf_session__set_id_hdr_size(session
);
1364 perf_session__set_comm_exec(session
);
1367 case PERF_RECORD_EVENT_UPDATE
:
1368 return tool
->event_update(tool
, event
, &session
->evlist
);
1369 case PERF_RECORD_HEADER_EVENT_TYPE
:
1371 * Depreceated, but we need to handle it for sake
1372 * of old data files create in pipe mode.
1375 case PERF_RECORD_HEADER_TRACING_DATA
:
1376 /* setup for reading amidst mmap */
1377 lseek(fd
, file_offset
, SEEK_SET
);
1378 return tool
->tracing_data(tool
, event
, session
);
1379 case PERF_RECORD_HEADER_BUILD_ID
:
1380 return tool
->build_id(tool
, event
, session
);
1381 case PERF_RECORD_FINISHED_ROUND
:
1382 return tool
->finished_round(tool
, event
, oe
);
1383 case PERF_RECORD_ID_INDEX
:
1384 return tool
->id_index(tool
, event
, session
);
1385 case PERF_RECORD_AUXTRACE_INFO
:
1386 return tool
->auxtrace_info(tool
, event
, session
);
1387 case PERF_RECORD_AUXTRACE
:
1388 /* setup for reading amidst mmap */
1389 lseek(fd
, file_offset
+ event
->header
.size
, SEEK_SET
);
1390 return tool
->auxtrace(tool
, event
, session
);
1391 case PERF_RECORD_AUXTRACE_ERROR
:
1392 perf_session__auxtrace_error_inc(session
, event
);
1393 return tool
->auxtrace_error(tool
, event
, session
);
1394 case PERF_RECORD_THREAD_MAP
:
1395 return tool
->thread_map(tool
, event
, session
);
1396 case PERF_RECORD_CPU_MAP
:
1397 return tool
->cpu_map(tool
, event
, session
);
1398 case PERF_RECORD_STAT_CONFIG
:
1399 return tool
->stat_config(tool
, event
, session
);
1400 case PERF_RECORD_STAT
:
1401 return tool
->stat(tool
, event
, session
);
1402 case PERF_RECORD_STAT_ROUND
:
1403 return tool
->stat_round(tool
, event
, session
);
1404 case PERF_RECORD_TIME_CONV
:
1405 session
->time_conv
= event
->time_conv
;
1406 return tool
->time_conv(tool
, event
, session
);
1407 case PERF_RECORD_HEADER_FEATURE
:
1408 return tool
->feature(tool
, event
, session
);
1414 int perf_session__deliver_synth_event(struct perf_session
*session
,
1415 union perf_event
*event
,
1416 struct perf_sample
*sample
)
1418 struct perf_evlist
*evlist
= session
->evlist
;
1419 struct perf_tool
*tool
= session
->tool
;
1421 events_stats__inc(&evlist
->stats
, event
->header
.type
);
1423 if (event
->header
.type
>= PERF_RECORD_USER_TYPE_START
)
1424 return perf_session__process_user_event(session
, event
, 0);
1426 return machines__deliver_event(&session
->machines
, evlist
, event
, sample
, tool
, 0);
1429 static void event_swap(union perf_event
*event
, bool sample_id_all
)
1431 perf_event__swap_op swap
;
1433 swap
= perf_event__swap_ops
[event
->header
.type
];
1435 swap(event
, sample_id_all
);
1438 int perf_session__peek_event(struct perf_session
*session
, off_t file_offset
,
1439 void *buf
, size_t buf_sz
,
1440 union perf_event
**event_ptr
,
1441 struct perf_sample
*sample
)
1443 union perf_event
*event
;
1444 size_t hdr_sz
, rest
;
1447 if (session
->one_mmap
&& !session
->header
.needs_swap
) {
1448 event
= file_offset
- session
->one_mmap_offset
+
1449 session
->one_mmap_addr
;
1450 goto out_parse_sample
;
1453 if (perf_data_file__is_pipe(session
->file
))
1456 fd
= perf_data_file__fd(session
->file
);
1457 hdr_sz
= sizeof(struct perf_event_header
);
1459 if (buf_sz
< hdr_sz
)
1462 if (lseek(fd
, file_offset
, SEEK_SET
) == (off_t
)-1 ||
1463 readn(fd
, buf
, hdr_sz
) != (ssize_t
)hdr_sz
)
1466 event
= (union perf_event
*)buf
;
1468 if (session
->header
.needs_swap
)
1469 perf_event_header__bswap(&event
->header
);
1471 if (event
->header
.size
< hdr_sz
|| event
->header
.size
> buf_sz
)
1474 rest
= event
->header
.size
- hdr_sz
;
1476 if (readn(fd
, buf
, rest
) != (ssize_t
)rest
)
1479 if (session
->header
.needs_swap
)
1480 event_swap(event
, perf_evlist__sample_id_all(session
->evlist
));
1484 if (sample
&& event
->header
.type
< PERF_RECORD_USER_TYPE_START
&&
1485 perf_evlist__parse_sample(session
->evlist
, event
, sample
))
1493 static s64
perf_session__process_event(struct perf_session
*session
,
1494 union perf_event
*event
, u64 file_offset
)
1496 struct perf_evlist
*evlist
= session
->evlist
;
1497 struct perf_tool
*tool
= session
->tool
;
1498 struct perf_sample sample
;
1501 if (session
->header
.needs_swap
)
1502 event_swap(event
, perf_evlist__sample_id_all(evlist
));
1504 if (event
->header
.type
>= PERF_RECORD_HEADER_MAX
)
1507 events_stats__inc(&evlist
->stats
, event
->header
.type
);
1509 if (event
->header
.type
>= PERF_RECORD_USER_TYPE_START
)
1510 return perf_session__process_user_event(session
, event
, file_offset
);
1513 * For all kernel events we get the sample data
1515 ret
= perf_evlist__parse_sample(evlist
, event
, &sample
);
1519 if (tool
->ordered_events
) {
1520 ret
= perf_session__queue_event(session
, event
, &sample
, file_offset
);
1525 return perf_session__deliver_event(session
, event
, &sample
, tool
,
1529 void perf_event_header__bswap(struct perf_event_header
*hdr
)
1531 hdr
->type
= bswap_32(hdr
->type
);
1532 hdr
->misc
= bswap_16(hdr
->misc
);
1533 hdr
->size
= bswap_16(hdr
->size
);
1536 struct thread
*perf_session__findnew(struct perf_session
*session
, pid_t pid
)
1538 return machine__findnew_thread(&session
->machines
.host
, -1, pid
);
1541 int perf_session__register_idle_thread(struct perf_session
*session
)
1543 struct thread
*thread
;
1546 thread
= machine__findnew_thread(&session
->machines
.host
, 0, 0);
1547 if (thread
== NULL
|| thread__set_comm(thread
, "swapper", 0)) {
1548 pr_err("problem inserting idle task.\n");
1552 if (thread
== NULL
|| thread__set_namespaces(thread
, 0, NULL
)) {
1553 pr_err("problem inserting idle task.\n");
1557 /* machine__findnew_thread() got the thread, so put it */
1558 thread__put(thread
);
1563 perf_session__warn_order(const struct perf_session
*session
)
1565 const struct ordered_events
*oe
= &session
->ordered_events
;
1566 struct perf_evsel
*evsel
;
1567 bool should_warn
= true;
1569 evlist__for_each_entry(session
->evlist
, evsel
) {
1570 if (evsel
->attr
.write_backward
)
1571 should_warn
= false;
1576 if (oe
->nr_unordered_events
!= 0)
1577 ui__warning("%u out of order events recorded.\n", oe
->nr_unordered_events
);
1580 static void perf_session__warn_about_errors(const struct perf_session
*session
)
1582 const struct events_stats
*stats
= &session
->evlist
->stats
;
1584 if (session
->tool
->lost
== perf_event__process_lost
&&
1585 stats
->nr_events
[PERF_RECORD_LOST
] != 0) {
1586 ui__warning("Processed %d events and lost %d chunks!\n\n"
1587 "Check IO/CPU overload!\n\n",
1588 stats
->nr_events
[0],
1589 stats
->nr_events
[PERF_RECORD_LOST
]);
1592 if (session
->tool
->lost_samples
== perf_event__process_lost_samples
) {
1595 drop_rate
= (double)stats
->total_lost_samples
/
1596 (double) (stats
->nr_events
[PERF_RECORD_SAMPLE
] + stats
->total_lost_samples
);
1597 if (drop_rate
> 0.05) {
1598 ui__warning("Processed %" PRIu64
" samples and lost %3.2f%% samples!\n\n",
1599 stats
->nr_events
[PERF_RECORD_SAMPLE
] + stats
->total_lost_samples
,
1604 if (session
->tool
->aux
== perf_event__process_aux
&&
1605 stats
->total_aux_lost
!= 0) {
1606 ui__warning("AUX data lost %" PRIu64
" times out of %u!\n\n",
1607 stats
->total_aux_lost
,
1608 stats
->nr_events
[PERF_RECORD_AUX
]);
1611 if (session
->tool
->aux
== perf_event__process_aux
&&
1612 stats
->total_aux_partial
!= 0) {
1613 bool vmm_exclusive
= false;
1615 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1618 ui__warning("AUX data had gaps in it %" PRIu64
" times out of %u!\n\n"
1619 "Are you running a KVM guest in the background?%s\n\n",
1620 stats
->total_aux_partial
,
1621 stats
->nr_events
[PERF_RECORD_AUX
],
1623 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1624 "will reduce the gaps to only guest's timeslices." :
1628 if (stats
->nr_unknown_events
!= 0) {
1629 ui__warning("Found %u unknown events!\n\n"
1630 "Is this an older tool processing a perf.data "
1631 "file generated by a more recent tool?\n\n"
1632 "If that is not the case, consider "
1633 "reporting to linux-kernel@vger.kernel.org.\n\n",
1634 stats
->nr_unknown_events
);
1637 if (stats
->nr_unknown_id
!= 0) {
1638 ui__warning("%u samples with id not present in the header\n",
1639 stats
->nr_unknown_id
);
1642 if (stats
->nr_invalid_chains
!= 0) {
1643 ui__warning("Found invalid callchains!\n\n"
1644 "%u out of %u events were discarded for this reason.\n\n"
1645 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1646 stats
->nr_invalid_chains
,
1647 stats
->nr_events
[PERF_RECORD_SAMPLE
]);
1650 if (stats
->nr_unprocessable_samples
!= 0) {
1651 ui__warning("%u unprocessable samples recorded.\n"
1652 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1653 stats
->nr_unprocessable_samples
);
1656 perf_session__warn_order(session
);
1658 events_stats__auxtrace_error_warn(stats
);
1660 if (stats
->nr_proc_map_timeout
!= 0) {
1661 ui__warning("%d map information files for pre-existing threads were\n"
1662 "not processed, if there are samples for addresses they\n"
1663 "will not be resolved, you may find out which are these\n"
1664 "threads by running with -v and redirecting the output\n"
1666 "The time limit to process proc map is too short?\n"
1667 "Increase it by --proc-map-timeout\n",
1668 stats
->nr_proc_map_timeout
);
1672 static int perf_session__flush_thread_stack(struct thread
*thread
,
1673 void *p __maybe_unused
)
1675 return thread_stack__flush(thread
);
1678 static int perf_session__flush_thread_stacks(struct perf_session
*session
)
1680 return machines__for_each_thread(&session
->machines
,
1681 perf_session__flush_thread_stack
,
1685 volatile int session_done
;
1687 static int __perf_session__process_pipe_events(struct perf_session
*session
)
1689 struct ordered_events
*oe
= &session
->ordered_events
;
1690 struct perf_tool
*tool
= session
->tool
;
1691 int fd
= perf_data_file__fd(session
->file
);
1692 union perf_event
*event
;
1693 uint32_t size
, cur_size
= 0;
1700 perf_tool__fill_defaults(tool
);
1703 cur_size
= sizeof(union perf_event
);
1705 buf
= malloc(cur_size
);
1708 ordered_events__set_copy_on_queue(oe
, true);
1711 err
= readn(fd
, event
, sizeof(struct perf_event_header
));
1716 pr_err("failed to read event header\n");
1720 if (session
->header
.needs_swap
)
1721 perf_event_header__bswap(&event
->header
);
1723 size
= event
->header
.size
;
1724 if (size
< sizeof(struct perf_event_header
)) {
1725 pr_err("bad event header size\n");
1729 if (size
> cur_size
) {
1730 void *new = realloc(buf
, size
);
1732 pr_err("failed to allocate memory to read event\n");
1740 p
+= sizeof(struct perf_event_header
);
1742 if (size
- sizeof(struct perf_event_header
)) {
1743 err
= readn(fd
, p
, size
- sizeof(struct perf_event_header
));
1746 pr_err("unexpected end of event stream\n");
1750 pr_err("failed to read event data\n");
1755 if ((skip
= perf_session__process_event(session
, event
, head
)) < 0) {
1756 pr_err("%#" PRIx64
" [%#x]: failed to process type: %d\n",
1757 head
, event
->header
.size
, event
->header
.type
);
1767 if (!session_done())
1770 /* do the final flush for ordered samples */
1771 err
= ordered_events__flush(oe
, OE_FLUSH__FINAL
);
1774 err
= auxtrace__flush_events(session
, tool
);
1777 err
= perf_session__flush_thread_stacks(session
);
1780 perf_session__warn_about_errors(session
);
1781 ordered_events__free(&session
->ordered_events
);
1782 auxtrace__free_events(session
);
1786 static union perf_event
*
1787 fetch_mmaped_event(struct perf_session
*session
,
1788 u64 head
, size_t mmap_size
, char *buf
)
1790 union perf_event
*event
;
1793 * Ensure we have enough space remaining to read
1794 * the size of the event in the headers.
1796 if (head
+ sizeof(event
->header
) > mmap_size
)
1799 event
= (union perf_event
*)(buf
+ head
);
1801 if (session
->header
.needs_swap
)
1802 perf_event_header__bswap(&event
->header
);
1804 if (head
+ event
->header
.size
> mmap_size
) {
1805 /* We're not fetching the event so swap back again */
1806 if (session
->header
.needs_swap
)
1807 perf_event_header__bswap(&event
->header
);
1815 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1816 * slices. On 32bit we use 32MB.
1818 #if BITS_PER_LONG == 64
1819 #define MMAP_SIZE ULLONG_MAX
1822 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1823 #define NUM_MMAPS 128
1826 static int __perf_session__process_events(struct perf_session
*session
,
1827 u64 data_offset
, u64 data_size
,
1830 struct ordered_events
*oe
= &session
->ordered_events
;
1831 struct perf_tool
*tool
= session
->tool
;
1832 int fd
= perf_data_file__fd(session
->file
);
1833 u64 head
, page_offset
, file_offset
, file_pos
, size
;
1834 int err
, mmap_prot
, mmap_flags
, map_idx
= 0;
1836 char *buf
, *mmaps
[NUM_MMAPS
];
1837 union perf_event
*event
;
1838 struct ui_progress prog
;
1841 perf_tool__fill_defaults(tool
);
1843 page_offset
= page_size
* (data_offset
/ page_size
);
1844 file_offset
= page_offset
;
1845 head
= data_offset
- page_offset
;
1850 if (data_offset
+ data_size
< file_size
)
1851 file_size
= data_offset
+ data_size
;
1853 ui_progress__init(&prog
, file_size
, "Processing events...");
1855 mmap_size
= MMAP_SIZE
;
1856 if (mmap_size
> file_size
) {
1857 mmap_size
= file_size
;
1858 session
->one_mmap
= true;
1861 memset(mmaps
, 0, sizeof(mmaps
));
1863 mmap_prot
= PROT_READ
;
1864 mmap_flags
= MAP_SHARED
;
1866 if (session
->header
.needs_swap
) {
1867 mmap_prot
|= PROT_WRITE
;
1868 mmap_flags
= MAP_PRIVATE
;
1871 buf
= mmap(NULL
, mmap_size
, mmap_prot
, mmap_flags
, fd
,
1873 if (buf
== MAP_FAILED
) {
1874 pr_err("failed to mmap file\n");
1878 mmaps
[map_idx
] = buf
;
1879 map_idx
= (map_idx
+ 1) & (ARRAY_SIZE(mmaps
) - 1);
1880 file_pos
= file_offset
+ head
;
1881 if (session
->one_mmap
) {
1882 session
->one_mmap_addr
= buf
;
1883 session
->one_mmap_offset
= file_offset
;
1887 event
= fetch_mmaped_event(session
, head
, mmap_size
, buf
);
1889 if (mmaps
[map_idx
]) {
1890 munmap(mmaps
[map_idx
], mmap_size
);
1891 mmaps
[map_idx
] = NULL
;
1894 page_offset
= page_size
* (head
/ page_size
);
1895 file_offset
+= page_offset
;
1896 head
-= page_offset
;
1900 size
= event
->header
.size
;
1902 if (size
< sizeof(struct perf_event_header
) ||
1903 (skip
= perf_session__process_event(session
, event
, file_pos
)) < 0) {
1904 pr_err("%#" PRIx64
" [%#x]: failed to process type: %d\n",
1905 file_offset
+ head
, event
->header
.size
,
1906 event
->header
.type
);
1917 ui_progress__update(&prog
, size
);
1922 if (file_pos
< file_size
)
1926 /* do the final flush for ordered samples */
1927 err
= ordered_events__flush(oe
, OE_FLUSH__FINAL
);
1930 err
= auxtrace__flush_events(session
, tool
);
1933 err
= perf_session__flush_thread_stacks(session
);
1935 ui_progress__finish();
1936 perf_session__warn_about_errors(session
);
1938 * We may switching perf.data output, make ordered_events
1941 ordered_events__reinit(&session
->ordered_events
);
1942 auxtrace__free_events(session
);
1943 session
->one_mmap
= false;
1947 int perf_session__process_events(struct perf_session
*session
)
1949 u64 size
= perf_data_file__size(session
->file
);
1952 if (perf_session__register_idle_thread(session
) < 0)
1955 if (!perf_data_file__is_pipe(session
->file
))
1956 err
= __perf_session__process_events(session
,
1957 session
->header
.data_offset
,
1958 session
->header
.data_size
, size
);
1960 err
= __perf_session__process_pipe_events(session
);
1965 bool perf_session__has_traces(struct perf_session
*session
, const char *msg
)
1967 struct perf_evsel
*evsel
;
1969 evlist__for_each_entry(session
->evlist
, evsel
) {
1970 if (evsel
->attr
.type
== PERF_TYPE_TRACEPOINT
)
1974 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg
);
1978 int maps__set_kallsyms_ref_reloc_sym(struct map
**maps
,
1979 const char *symbol_name
, u64 addr
)
1983 struct ref_reloc_sym
*ref
;
1985 ref
= zalloc(sizeof(struct ref_reloc_sym
));
1989 ref
->name
= strdup(symbol_name
);
1990 if (ref
->name
== NULL
) {
1995 bracket
= strchr(ref
->name
, ']');
2001 for (i
= 0; i
< MAP__NR_TYPES
; ++i
) {
2002 struct kmap
*kmap
= map__kmap(maps
[i
]);
2006 kmap
->ref_reloc_sym
= ref
;
2012 size_t perf_session__fprintf_dsos(struct perf_session
*session
, FILE *fp
)
2014 return machines__fprintf_dsos(&session
->machines
, fp
);
2017 size_t perf_session__fprintf_dsos_buildid(struct perf_session
*session
, FILE *fp
,
2018 bool (skip
)(struct dso
*dso
, int parm
), int parm
)
2020 return machines__fprintf_dsos_buildid(&session
->machines
, fp
, skip
, parm
);
2023 size_t perf_session__fprintf_nr_events(struct perf_session
*session
, FILE *fp
)
2026 const char *msg
= "";
2028 if (perf_header__has_feat(&session
->header
, HEADER_AUXTRACE
))
2029 msg
= " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2031 ret
= fprintf(fp
, "\nAggregated stats:%s\n", msg
);
2033 ret
+= events_stats__fprintf(&session
->evlist
->stats
, fp
);
2037 size_t perf_session__fprintf(struct perf_session
*session
, FILE *fp
)
2040 * FIXME: Here we have to actually print all the machines in this
2041 * session, not just the host...
2043 return machine__fprintf(&session
->machines
.host
, fp
);
2046 struct perf_evsel
*perf_session__find_first_evtype(struct perf_session
*session
,
2049 struct perf_evsel
*pos
;
2051 evlist__for_each_entry(session
->evlist
, pos
) {
2052 if (pos
->attr
.type
== type
)
2058 int perf_session__cpu_bitmap(struct perf_session
*session
,
2059 const char *cpu_list
, unsigned long *cpu_bitmap
)
2062 struct cpu_map
*map
;
2064 for (i
= 0; i
< PERF_TYPE_MAX
; ++i
) {
2065 struct perf_evsel
*evsel
;
2067 evsel
= perf_session__find_first_evtype(session
, i
);
2071 if (!(evsel
->attr
.sample_type
& PERF_SAMPLE_CPU
)) {
2072 pr_err("File does not contain CPU events. "
2073 "Remove -C option to proceed.\n");
2078 map
= cpu_map__new(cpu_list
);
2080 pr_err("Invalid cpu_list\n");
2084 for (i
= 0; i
< map
->nr
; i
++) {
2085 int cpu
= map
->map
[i
];
2087 if (cpu
>= MAX_NR_CPUS
) {
2088 pr_err("Requested CPU %d too large. "
2089 "Consider raising MAX_NR_CPUS\n", cpu
);
2090 goto out_delete_map
;
2093 set_bit(cpu
, cpu_bitmap
);
2103 void perf_session__fprintf_info(struct perf_session
*session
, FILE *fp
,
2106 if (session
== NULL
|| fp
== NULL
)
2109 fprintf(fp
, "# ========\n");
2110 perf_header__fprintf_info(session
, fp
, full
);
2111 fprintf(fp
, "# ========\n#\n");
2115 int __perf_session__set_tracepoints_handlers(struct perf_session
*session
,
2116 const struct perf_evsel_str_handler
*assocs
,
2119 struct perf_evsel
*evsel
;
2123 for (i
= 0; i
< nr_assocs
; i
++) {
2125 * Adding a handler for an event not in the session,
2128 evsel
= perf_evlist__find_tracepoint_by_name(session
->evlist
, assocs
[i
].name
);
2133 if (evsel
->handler
!= NULL
)
2135 evsel
->handler
= assocs
[i
].handler
;
2143 int perf_event__process_id_index(struct perf_tool
*tool __maybe_unused
,
2144 union perf_event
*event
,
2145 struct perf_session
*session
)
2147 struct perf_evlist
*evlist
= session
->evlist
;
2148 struct id_index_event
*ie
= &event
->id_index
;
2149 size_t i
, nr
, max_nr
;
2151 max_nr
= (ie
->header
.size
- sizeof(struct id_index_event
)) /
2152 sizeof(struct id_index_entry
);
2158 fprintf(stdout
, " nr: %zu\n", nr
);
2160 for (i
= 0; i
< nr
; i
++) {
2161 struct id_index_entry
*e
= &ie
->entries
[i
];
2162 struct perf_sample_id
*sid
;
2165 fprintf(stdout
, " ... id: %"PRIu64
, e
->id
);
2166 fprintf(stdout
, " idx: %"PRIu64
, e
->idx
);
2167 fprintf(stdout
, " cpu: %"PRId64
, e
->cpu
);
2168 fprintf(stdout
, " tid: %"PRId64
"\n", e
->tid
);
2171 sid
= perf_evlist__id2sid(evlist
, e
->id
);
2181 int perf_event__synthesize_id_index(struct perf_tool
*tool
,
2182 perf_event__handler_t process
,
2183 struct perf_evlist
*evlist
,
2184 struct machine
*machine
)
2186 union perf_event
*ev
;
2187 struct perf_evsel
*evsel
;
2188 size_t nr
= 0, i
= 0, sz
, max_nr
, n
;
2191 pr_debug2("Synthesizing id index\n");
2193 max_nr
= (UINT16_MAX
- sizeof(struct id_index_event
)) /
2194 sizeof(struct id_index_entry
);
2196 evlist__for_each_entry(evlist
, evsel
)
2199 n
= nr
> max_nr
? max_nr
: nr
;
2200 sz
= sizeof(struct id_index_event
) + n
* sizeof(struct id_index_entry
);
2205 ev
->id_index
.header
.type
= PERF_RECORD_ID_INDEX
;
2206 ev
->id_index
.header
.size
= sz
;
2207 ev
->id_index
.nr
= n
;
2209 evlist__for_each_entry(evlist
, evsel
) {
2212 for (j
= 0; j
< evsel
->ids
; j
++) {
2213 struct id_index_entry
*e
;
2214 struct perf_sample_id
*sid
;
2217 err
= process(tool
, ev
, NULL
, machine
);
2224 e
= &ev
->id_index
.entries
[i
++];
2226 e
->id
= evsel
->id
[j
];
2228 sid
= perf_evlist__id2sid(evlist
, e
->id
);
2240 sz
= sizeof(struct id_index_event
) + nr
* sizeof(struct id_index_entry
);
2241 ev
->id_index
.header
.size
= sz
;
2242 ev
->id_index
.nr
= nr
;
2244 err
= process(tool
, ev
, NULL
, machine
);