1#include <errno.h>
2#include <fcntl.h>
3#include <inttypes.h>
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <perf/cpumap.h>
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <unistd.h>
10#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
11#include <linux/perf_event.h>
12#include <linux/zalloc.h>
13#include "cpumap.h"
14#include "dso.h"
15#include "event.h"
16#include "debug.h"
17#include "hist.h"
18#include "machine.h"
19#include "sort.h"
20#include "string2.h"
21#include "strlist.h"
22#include "thread.h"
23#include "thread_map.h"
24#include "time-utils.h"
25#include <linux/ctype.h>
26#include "map.h"
27#include "util/namespaces.h"
28#include "symbol.h"
29#include "symbol/kallsyms.h"
30#include "asm/bug.h"
31#include "stat.h"
32#include "session.h"
33#include "bpf-event.h"
34#include "print_binary.h"
35#include "tool.h"
36#include "util.h"
37
38static const char *perf_event__names[] = {
39 [0] = "TOTAL",
40 [PERF_RECORD_MMAP] = "MMAP",
41 [PERF_RECORD_MMAP2] = "MMAP2",
42 [PERF_RECORD_LOST] = "LOST",
43 [PERF_RECORD_COMM] = "COMM",
44 [PERF_RECORD_EXIT] = "EXIT",
45 [PERF_RECORD_THROTTLE] = "THROTTLE",
46 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
47 [PERF_RECORD_FORK] = "FORK",
48 [PERF_RECORD_READ] = "READ",
49 [PERF_RECORD_SAMPLE] = "SAMPLE",
50 [PERF_RECORD_AUX] = "AUX",
51 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
52 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
53 [PERF_RECORD_SWITCH] = "SWITCH",
54 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE",
55 [PERF_RECORD_NAMESPACES] = "NAMESPACES",
56 [PERF_RECORD_KSYMBOL] = "KSYMBOL",
57 [PERF_RECORD_BPF_EVENT] = "BPF_EVENT",
58 [PERF_RECORD_CGROUP] = "CGROUP",
59 [PERF_RECORD_TEXT_POKE] = "TEXT_POKE",
60 [PERF_RECORD_AUX_OUTPUT_HW_ID] = "AUX_OUTPUT_HW_ID",
61 [PERF_RECORD_HEADER_ATTR] = "ATTR",
62 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
63 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
64 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
65 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
66 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
67 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
68 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
69 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
70 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
71 [PERF_RECORD_CPU_MAP] = "CPU_MAP",
72 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
73 [PERF_RECORD_STAT] = "STAT",
74 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
75 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
76 [PERF_RECORD_TIME_CONV] = "TIME_CONV",
77 [PERF_RECORD_HEADER_FEATURE] = "FEATURE",
78 [PERF_RECORD_COMPRESSED] = "COMPRESSED",
79 [PERF_RECORD_FINISHED_INIT] = "FINISHED_INIT",
80};
81
82const char *perf_event__name(unsigned int id)
83{
84 if (id >= ARRAY_SIZE(perf_event__names))
85 return "INVALID";
86 if (!perf_event__names[id])
87 return "UNKNOWN";
88 return perf_event__names[id];
89}
90
91struct process_symbol_args {
92 const char *name;
93 u64 start;
94};
95
96static int find_func_symbol_cb(void *arg, const char *name, char type,
97 u64 start)
98{
99 struct process_symbol_args *args = arg;
100
101 /*
102 * Must be a function or at least an alias, as in PARISC64, where "_text" is
103 * an 'A' to the same address as "_stext".
104 */
105 if (!(kallsyms__is_function(type) ||
106 type == 'A') || strcmp(name, args->name))
107 return 0;
108
109 args->start = start;
110 return 1;
111}
112
113static int find_any_symbol_cb(void *arg, const char *name,
114 char type __maybe_unused, u64 start)
115{
116 struct process_symbol_args *args = arg;
117
118 if (strcmp(name, args->name))
119 return 0;
120
121 args->start = start;
122 return 1;
123}
124
125int kallsyms__get_function_start(const char *kallsyms_filename,
126 const char *symbol_name, u64 *addr)
127{
128 struct process_symbol_args args = { .name = symbol_name, };
129
130 if (kallsyms__parse(kallsyms_filename, &args, find_func_symbol_cb) <= 0)
131 return -1;
132
133 *addr = args.start;
134 return 0;
135}
136
137int kallsyms__get_symbol_start(const char *kallsyms_filename,
138 const char *symbol_name, u64 *addr)
139{
140 struct process_symbol_args args = { .name = symbol_name, };
141
142 if (kallsyms__parse(kallsyms_filename, &args, find_any_symbol_cb) <= 0)
143 return -1;
144
145 *addr = args.start;
146 return 0;
147}
148
149void perf_event__read_stat_config(struct perf_stat_config *config,
150 struct perf_record_stat_config *event)
151{
152 unsigned i;
153
154 for (i = 0; i < event->nr; i++) {
155
156 switch (event->data[i].tag) {
157#define CASE(__term, __val) \
158 case PERF_STAT_CONFIG_TERM__##__term: \
159 config->__val = event->data[i].val; \
160 break;
161
162 CASE(AGGR_MODE, aggr_mode)
163 CASE(SCALE, scale)
164 CASE(INTERVAL, interval)
165 CASE(AGGR_LEVEL, aggr_level)
166#undef CASE
167 default:
168 pr_warning("unknown stat config term %" PRI_lu64 "\n",
169 event->data[i].tag);
170 }
171 }
172}
173
174size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
175{
176 const char *s;
177
178 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
179 s = " exec";
180 else
181 s = "";
182
183 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
184}
185
186size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
187{
188 size_t ret = 0;
189 struct perf_ns_link_info *ns_link_info;
190 u32 nr_namespaces, idx;
191
192 ns_link_info = event->namespaces.link_info;
193 nr_namespaces = event->namespaces.nr_namespaces;
194
195 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
196 event->namespaces.pid,
197 event->namespaces.tid,
198 nr_namespaces);
199
200 for (idx = 0; idx < nr_namespaces; idx++) {
201 if (idx && (idx % 4 == 0))
202 ret += fprintf(fp, "\n\t\t ");
203
204 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
205 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
206 (u64)ns_link_info[idx].ino,
207 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
208 }
209
210 return ret;
211}
212
213size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
214{
215 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
216 event->cgroup.id, event->cgroup.path);
217}
218
219int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
220 union perf_event *event,
221 struct perf_sample *sample,
222 struct machine *machine)
223{
224 return machine__process_comm_event(machine, event, sample);
225}
226
227int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
228 union perf_event *event,
229 struct perf_sample *sample,
230 struct machine *machine)
231{
232 return machine__process_namespaces_event(machine, event, sample);
233}
234
235int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused,
236 union perf_event *event,
237 struct perf_sample *sample,
238 struct machine *machine)
239{
240 return machine__process_cgroup_event(machine, event, sample);
241}
242
243int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
244 union perf_event *event,
245 struct perf_sample *sample,
246 struct machine *machine)
247{
248 return machine__process_lost_event(machine, event, sample);
249}
250
251int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
252 union perf_event *event,
253 struct perf_sample *sample __maybe_unused,
254 struct machine *machine)
255{
256 return machine__process_aux_event(machine, event);
257}
258
259int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
260 union perf_event *event,
261 struct perf_sample *sample __maybe_unused,
262 struct machine *machine)
263{
264 return machine__process_itrace_start_event(machine, event);
265}
266
267int perf_event__process_aux_output_hw_id(struct perf_tool *tool __maybe_unused,
268 union perf_event *event,
269 struct perf_sample *sample __maybe_unused,
270 struct machine *machine)
271{
272 return machine__process_aux_output_hw_id_event(machine, event);
273}
274
275int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
276 union perf_event *event,
277 struct perf_sample *sample,
278 struct machine *machine)
279{
280 return machine__process_lost_samples_event(machine, event, sample);
281}
282
283int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
284 union perf_event *event,
285 struct perf_sample *sample __maybe_unused,
286 struct machine *machine)
287{
288 return machine__process_switch_event(machine, event);
289}
290
291int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused,
292 union perf_event *event,
293 struct perf_sample *sample __maybe_unused,
294 struct machine *machine)
295{
296 return machine__process_ksymbol(machine, event, sample);
297}
298
299int perf_event__process_bpf(struct perf_tool *tool __maybe_unused,
300 union perf_event *event,
301 struct perf_sample *sample,
302 struct machine *machine)
303{
304 return machine__process_bpf(machine, event, sample);
305}
306
307int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused,
308 union perf_event *event,
309 struct perf_sample *sample,
310 struct machine *machine)
311{
312 return machine__process_text_poke(machine, event, sample);
313}
314
315size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
316{
317 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
318 event->mmap.pid, event->mmap.tid, event->mmap.start,
319 event->mmap.len, event->mmap.pgoff,
320 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
321 event->mmap.filename);
322}
323
324size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
325{
326 if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
327 char sbuild_id[SBUILD_ID_SIZE];
328 struct build_id bid;
329
330 build_id__init(bid: &bid, data: event->mmap2.build_id,
331 size: event->mmap2.build_id_size);
332 build_id__sprintf(build_id: &bid, bf: sbuild_id);
333
334 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
335 " <%s>]: %c%c%c%c %s\n",
336 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
337 event->mmap2.len, event->mmap2.pgoff, sbuild_id,
338 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
339 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
340 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
341 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
342 event->mmap2.filename);
343 } else {
344 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
345 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
346 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
347 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
348 event->mmap2.min, event->mmap2.ino,
349 event->mmap2.ino_generation,
350 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
351 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
352 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
353 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
354 event->mmap2.filename);
355 }
356}
357
358size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
359{
360 struct perf_thread_map *threads = thread_map__new_event(event: &event->thread_map);
361 size_t ret;
362
363 ret = fprintf(fp, " nr: ");
364
365 if (threads)
366 ret += thread_map__fprintf(threads, fp);
367 else
368 ret += fprintf(fp, "failed to get threads from event\n");
369
370 perf_thread_map__put(threads);
371 return ret;
372}
373
374size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
375{
376 struct perf_cpu_map *cpus = cpu_map__new_data(data: &event->cpu_map.data);
377 size_t ret;
378
379 ret = fprintf(fp, ": ");
380
381 if (cpus)
382 ret += cpu_map__fprintf(cpus, fp);
383 else
384 ret += fprintf(fp, "failed to get cpumap from event\n");
385
386 perf_cpu_map__put(cpus);
387 return ret;
388}
389
390int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
391 union perf_event *event,
392 struct perf_sample *sample,
393 struct machine *machine)
394{
395 return machine__process_mmap_event(machine, event, sample);
396}
397
398int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
399 union perf_event *event,
400 struct perf_sample *sample,
401 struct machine *machine)
402{
403 return machine__process_mmap2_event(machine, event, sample);
404}
405
406size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
407{
408 return fprintf(fp, "(%d:%d):(%d:%d)\n",
409 event->fork.pid, event->fork.tid,
410 event->fork.ppid, event->fork.ptid);
411}
412
413int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
414 union perf_event *event,
415 struct perf_sample *sample,
416 struct machine *machine)
417{
418 return machine__process_fork_event(machine, event, sample);
419}
420
421int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
422 union perf_event *event,
423 struct perf_sample *sample,
424 struct machine *machine)
425{
426 return machine__process_exit_event(machine, event, sample);
427}
428
429size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
430{
431 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
432 event->aux.aux_offset, event->aux.aux_size,
433 event->aux.flags,
434 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
435 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
436 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "");
437}
438
439size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
440{
441 return fprintf(fp, " pid: %u tid: %u\n",
442 event->itrace_start.pid, event->itrace_start.tid);
443}
444
445size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp)
446{
447 return fprintf(fp, " hw_id: %#"PRI_lx64"\n",
448 event->aux_output_hw_id.hw_id);
449}
450
451size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
452{
453 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
454 const char *in_out = !out ? "IN " :
455 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
456 "OUT " : "OUT preempt";
457
458 if (event->header.type == PERF_RECORD_SWITCH)
459 return fprintf(fp, " %s\n", in_out);
460
461 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n",
462 in_out, out ? "next" : "prev",
463 event->context_switch.next_prev_pid,
464 event->context_switch.next_prev_tid);
465}
466
467static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
468{
469 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
470}
471
472size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
473{
474 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
475 event->ksymbol.addr, event->ksymbol.len,
476 event->ksymbol.ksym_type,
477 event->ksymbol.flags, event->ksymbol.name);
478}
479
480size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
481{
482 return fprintf(fp, " type %u, flags %u, id %u\n",
483 event->bpf.type, event->bpf.flags, event->bpf.id);
484}
485
486static int text_poke_printer(enum binary_printer_ops op, unsigned int val,
487 void *extra, FILE *fp)
488{
489 bool old = *(bool *)extra;
490
491 switch ((int)op) {
492 case BINARY_PRINT_LINE_BEGIN:
493 return fprintf(fp, " %s bytes:", old ? "Old" : "New");
494 case BINARY_PRINT_NUM_DATA:
495 return fprintf(fp, " %02x", val);
496 case BINARY_PRINT_LINE_END:
497 return fprintf(fp, "\n");
498 default:
499 return 0;
500 }
501}
502
503size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp)
504{
505 struct perf_record_text_poke_event *tp = &event->text_poke;
506 size_t ret;
507 bool old;
508
509 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr);
510 if (machine) {
511 struct addr_location al;
512
513 addr_location__init(al: &al);
514 al.map = maps__find(maps: machine__kernel_maps(machine), addr: tp->addr);
515 if (al.map && map__load(map: al.map) >= 0) {
516 al.addr = map__map_ip(map: al.map, ip_or_rip: tp->addr);
517 al.sym = map__find_symbol(map: al.map, addr: al.addr);
518 if (al.sym)
519 ret += symbol__fprintf_symname_offs(al.sym, &al, fp);
520 }
521 addr_location__exit(al: &al);
522 }
523 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len);
524 old = true;
525 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer,
526 &old, fp);
527 old = false;
528 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16,
529 text_poke_printer, &old, fp);
530 return ret;
531}
532
533size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp)
534{
535 size_t ret = fprintf(fp, "PERF_RECORD_%s",
536 perf_event__name(id: event->header.type));
537
538 switch (event->header.type) {
539 case PERF_RECORD_COMM:
540 ret += perf_event__fprintf_comm(event, fp);
541 break;
542 case PERF_RECORD_FORK:
543 case PERF_RECORD_EXIT:
544 ret += perf_event__fprintf_task(event, fp);
545 break;
546 case PERF_RECORD_MMAP:
547 ret += perf_event__fprintf_mmap(event, fp);
548 break;
549 case PERF_RECORD_NAMESPACES:
550 ret += perf_event__fprintf_namespaces(event, fp);
551 break;
552 case PERF_RECORD_CGROUP:
553 ret += perf_event__fprintf_cgroup(event, fp);
554 break;
555 case PERF_RECORD_MMAP2:
556 ret += perf_event__fprintf_mmap2(event, fp);
557 break;
558 case PERF_RECORD_AUX:
559 ret += perf_event__fprintf_aux(event, fp);
560 break;
561 case PERF_RECORD_ITRACE_START:
562 ret += perf_event__fprintf_itrace_start(event, fp);
563 break;
564 case PERF_RECORD_SWITCH:
565 case PERF_RECORD_SWITCH_CPU_WIDE:
566 ret += perf_event__fprintf_switch(event, fp);
567 break;
568 case PERF_RECORD_LOST:
569 ret += perf_event__fprintf_lost(event, fp);
570 break;
571 case PERF_RECORD_KSYMBOL:
572 ret += perf_event__fprintf_ksymbol(event, fp);
573 break;
574 case PERF_RECORD_BPF_EVENT:
575 ret += perf_event__fprintf_bpf(event, fp);
576 break;
577 case PERF_RECORD_TEXT_POKE:
578 ret += perf_event__fprintf_text_poke(event, machine, fp);
579 break;
580 case PERF_RECORD_AUX_OUTPUT_HW_ID:
581 ret += perf_event__fprintf_aux_output_hw_id(event, fp);
582 break;
583 default:
584 ret += fprintf(fp, "\n");
585 }
586
587 return ret;
588}
589
590int perf_event__process(struct perf_tool *tool __maybe_unused,
591 union perf_event *event,
592 struct perf_sample *sample,
593 struct machine *machine)
594{
595 return machine__process_event(machine, event, sample);
596}
597
598struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
599 struct addr_location *al)
600{
601 struct maps *maps = thread__maps(thread);
602 struct machine *machine = maps__machine(maps);
603 bool load_map = false;
604
605 maps__zput(al->maps);
606 map__zput(al->map);
607 thread__zput(al->thread);
608 al->thread = thread__get(thread);
609
610 al->addr = addr;
611 al->cpumode = cpumode;
612 al->filtered = 0;
613
614 if (machine == NULL)
615 return NULL;
616
617 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
618 al->level = 'k';
619 maps = machine__kernel_maps(machine);
620 load_map = !symbol_conf.lazy_load_kernel_maps;
621 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
622 al->level = '.';
623 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
624 al->level = 'g';
625 maps = machine__kernel_maps(machine);
626 load_map = !symbol_conf.lazy_load_kernel_maps;
627 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
628 al->level = 'u';
629 } else {
630 al->level = 'H';
631
632 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
633 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
634 !perf_guest)
635 al->filtered |= (1 << HIST_FILTER__GUEST);
636 if ((cpumode == PERF_RECORD_MISC_USER ||
637 cpumode == PERF_RECORD_MISC_KERNEL) &&
638 !perf_host)
639 al->filtered |= (1 << HIST_FILTER__HOST);
640
641 return NULL;
642 }
643 al->maps = maps__get(maps);
644 al->map = maps__find(maps, addr: al->addr);
645 if (al->map != NULL) {
646 /*
647 * Kernel maps might be changed when loading symbols so loading
648 * must be done prior to using kernel maps.
649 */
650 if (load_map)
651 map__load(map: al->map);
652 al->addr = map__map_ip(map: al->map, ip_or_rip: al->addr);
653 }
654
655 return al->map;
656}
657
658/*
659 * For branch stacks or branch samples, the sample cpumode might not be correct
660 * because it applies only to the sample 'ip' and not necessary to 'addr' or
661 * branch stack addresses. If possible, use a fallback to deal with those cases.
662 */
663struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
664 struct addr_location *al)
665{
666 struct map *map = thread__find_map(thread, cpumode, addr, al);
667 struct machine *machine = maps__machine(maps: thread__maps(thread));
668 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
669
670 if (map || addr_cpumode == cpumode)
671 return map;
672
673 return thread__find_map(thread, cpumode: addr_cpumode, addr, al);
674}
675
676struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
677 u64 addr, struct addr_location *al)
678{
679 al->sym = NULL;
680 if (thread__find_map(thread, cpumode, addr, al))
681 al->sym = map__find_symbol(map: al->map, addr: al->addr);
682 return al->sym;
683}
684
685struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
686 u64 addr, struct addr_location *al)
687{
688 al->sym = NULL;
689 if (thread__find_map_fb(thread, cpumode, addr, al))
690 al->sym = map__find_symbol(map: al->map, addr: al->addr);
691 return al->sym;
692}
693
694static bool check_address_range(struct intlist *addr_list, int addr_range,
695 unsigned long addr)
696{
697 struct int_node *pos;
698
699 intlist__for_each_entry(pos, addr_list) {
700 if (addr >= pos->i && addr < pos->i + addr_range)
701 return true;
702 }
703
704 return false;
705}
706
707/*
708 * Callers need to drop the reference to al->thread, obtained in
709 * machine__findnew_thread()
710 */
711int machine__resolve(struct machine *machine, struct addr_location *al,
712 struct perf_sample *sample)
713{
714 struct thread *thread;
715 struct dso *dso;
716
717 if (symbol_conf.guest_code && !machine__is_host(machine))
718 thread = machine__findnew_guest_code(machine, pid: sample->pid);
719 else
720 thread = machine__findnew_thread(machine, pid: sample->pid, tid: sample->tid);
721 if (thread == NULL)
722 return -1;
723
724 dump_printf(fmt: " ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread));
725 thread__find_map(thread, cpumode: sample->cpumode, addr: sample->ip, al);
726 dso = al->map ? map__dso(map: al->map) : NULL;
727 dump_printf(fmt: " ...... dso: %s\n",
728 dso
729 ? dso->long_name
730 : (al->level == 'H' ? "[hypervisor]" : "<not found>"));
731
732 if (thread__is_filtered(thread))
733 al->filtered |= (1 << HIST_FILTER__THREAD);
734
735 thread__put(thread);
736 thread = NULL;
737
738 al->sym = NULL;
739 al->cpu = sample->cpu;
740 al->socket = -1;
741 al->srcline = NULL;
742
743 if (al->cpu >= 0) {
744 struct perf_env *env = machine->env;
745
746 if (env && env->cpu)
747 al->socket = env->cpu[al->cpu].socket_id;
748 }
749
750 if (al->map) {
751 if (symbol_conf.dso_list &&
752 (!dso || !(strlist__has_entry(slist: symbol_conf.dso_list,
753 entry: dso->short_name) ||
754 (dso->short_name != dso->long_name &&
755 strlist__has_entry(slist: symbol_conf.dso_list,
756 entry: dso->long_name))))) {
757 al->filtered |= (1 << HIST_FILTER__DSO);
758 }
759
760 al->sym = map__find_symbol(map: al->map, addr: al->addr);
761 } else if (symbol_conf.dso_list) {
762 al->filtered |= (1 << HIST_FILTER__DSO);
763 }
764
765 if (symbol_conf.sym_list) {
766 int ret = 0;
767 char al_addr_str[32];
768 size_t sz = sizeof(al_addr_str);
769
770 if (al->sym) {
771 ret = strlist__has_entry(slist: symbol_conf.sym_list,
772 entry: al->sym->name);
773 }
774 if (!ret && al->sym) {
775 snprintf(al_addr_str, sz, "0x%"PRIx64,
776 map__unmap_ip(al->map, al->sym->start));
777 ret = strlist__has_entry(slist: symbol_conf.sym_list,
778 entry: al_addr_str);
779 }
780 if (!ret && symbol_conf.addr_list && al->map) {
781 unsigned long addr = map__unmap_ip(map: al->map, ip_or_rip: al->addr);
782
783 ret = intlist__has_entry(ilist: symbol_conf.addr_list, i: addr);
784 if (!ret && symbol_conf.addr_range) {
785 ret = check_address_range(addr_list: symbol_conf.addr_list,
786 addr_range: symbol_conf.addr_range,
787 addr);
788 }
789 }
790
791 if (!ret)
792 al->filtered |= (1 << HIST_FILTER__SYMBOL);
793 }
794
795 return 0;
796}
797
798bool is_bts_event(struct perf_event_attr *attr)
799{
800 return attr->type == PERF_TYPE_HARDWARE &&
801 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
802 attr->sample_period == 1;
803}
804
805bool sample_addr_correlates_sym(struct perf_event_attr *attr)
806{
807 if (attr->type == PERF_TYPE_SOFTWARE &&
808 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
809 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
810 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
811 return true;
812
813 if (is_bts_event(attr))
814 return true;
815
816 return false;
817}
818
819void thread__resolve(struct thread *thread, struct addr_location *al,
820 struct perf_sample *sample)
821{
822 thread__find_map_fb(thread, cpumode: sample->cpumode, addr: sample->addr, al);
823
824 al->cpu = sample->cpu;
825 al->sym = NULL;
826
827 if (al->map)
828 al->sym = map__find_symbol(map: al->map, addr: al->addr);
829}
830

source code of linux/tools/perf/util/event.c