perf: Optimize ring-buffer write by depending on control dependencies
[deliverable/linux.git] / tools / perf / util / event.c
CommitLineData
234fbbf5
ACM
1#include <linux/types.h>
2#include "event.h"
3#include "debug.h"
f62d3f0f 4#include "machine.h"
c410a338 5#include "sort.h"
234fbbf5 6#include "string.h"
c410a338 7#include "strlist.h"
62daacb5 8#include "thread.h"
7c940c18 9#include "thread_map.h"
234fbbf5 10
8115d60c 11static const char *perf_event__names[] = {
3cb6d154
FW
12 [0] = "TOTAL",
13 [PERF_RECORD_MMAP] = "MMAP",
5c5e854b 14 [PERF_RECORD_MMAP2] = "MMAP2",
3cb6d154
FW
15 [PERF_RECORD_LOST] = "LOST",
16 [PERF_RECORD_COMM] = "COMM",
17 [PERF_RECORD_EXIT] = "EXIT",
18 [PERF_RECORD_THROTTLE] = "THROTTLE",
19 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
20 [PERF_RECORD_FORK] = "FORK",
21 [PERF_RECORD_READ] = "READ",
22 [PERF_RECORD_SAMPLE] = "SAMPLE",
23 [PERF_RECORD_HEADER_ATTR] = "ATTR",
24 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
25 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
26 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
27 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
c8446b9b
ACM
28};
29
8115d60c 30const char *perf_event__name(unsigned int id)
3835bc00 31{
8115d60c 32 if (id >= ARRAY_SIZE(perf_event__names))
3835bc00 33 return "INVALID";
8115d60c 34 if (!perf_event__names[id])
3835bc00 35 return "UNKNOWN";
8115d60c 36 return perf_event__names[id];
3835bc00
TG
37}
38
8d50e5b4 39static struct perf_sample synth_sample = {
640c03ce
ACM
40 .pid = -1,
41 .tid = -1,
42 .time = -1,
43 .stream_id = -1,
44 .cpu = -1,
45 .period = 1,
46};
47
f5faf726 48static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len)
234fbbf5 49{
234fbbf5
ACM
50 char filename[PATH_MAX];
51 char bf[BUFSIZ];
52 FILE *fp;
53 size_t size = 0;
f5faf726 54 pid_t tgid = -1;
234fbbf5
ACM
55
56 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
57
58 fp = fopen(filename, "r");
59 if (fp == NULL) {
234fbbf5
ACM
60 pr_debug("couldn't open %s\n", filename);
61 return 0;
62 }
63
f5faf726 64 while (!comm[0] || (tgid < 0)) {
9c90a61c 65 if (fgets(bf, sizeof(bf), fp) == NULL) {
f5faf726
DA
66 pr_warning("couldn't get COMM and pgid, malformed %s\n",
67 filename);
68 break;
9c90a61c 69 }
234fbbf5
ACM
70
71 if (memcmp(bf, "Name:", 5) == 0) {
72 char *name = bf + 5;
73 while (*name && isspace(*name))
74 ++name;
75 size = strlen(name) - 1;
f5faf726
DA
76 if (size >= len)
77 size = len - 1;
78 memcpy(comm, name, size);
cfbd70c1 79 comm[size] = '\0';
f5faf726 80
234fbbf5
ACM
81 } else if (memcmp(bf, "Tgid:", 5) == 0) {
82 char *tgids = bf + 5;
83 while (*tgids && isspace(*tgids))
84 ++tgids;
f5faf726 85 tgid = atoi(tgids);
234fbbf5
ACM
86 }
87 }
88
f5faf726
DA
89 fclose(fp);
90
91 return tgid;
92}
93
94static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
95 union perf_event *event, pid_t pid,
96 int full,
97 perf_event__handler_t process,
98 struct machine *machine)
99{
100 char filename[PATH_MAX];
101 size_t size;
102 DIR *tasks;
103 struct dirent dirent, *next;
104 pid_t tgid;
105
106 memset(&event->comm, 0, sizeof(event->comm));
107
108 tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
109 sizeof(event->comm.comm));
110 if (tgid < 0)
111 goto out;
112
113 event->comm.pid = tgid;
9c90a61c 114 event->comm.header.type = PERF_RECORD_COMM;
f5faf726
DA
115
116 size = strlen(event->comm.comm) + 1;
9ac3e487 117 size = PERF_ALIGN(size, sizeof(u64));
743eb868 118 memset(event->comm.comm + size, 0, machine->id_hdr_size);
9c90a61c
ACM
119 event->comm.header.size = (sizeof(event->comm) -
120 (sizeof(event->comm.comm) - size) +
743eb868 121 machine->id_hdr_size);
234fbbf5 122 if (!full) {
9c90a61c 123 event->comm.tid = pid;
234fbbf5 124
1e6d5322
DA
125 if (process(tool, event, &synth_sample, machine) != 0)
126 return -1;
127
9c90a61c 128 goto out;
234fbbf5
ACM
129 }
130
131 snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
132
133 tasks = opendir(filename);
f5faf726
DA
134 if (tasks == NULL) {
135 pr_debug("couldn't open %s\n", filename);
136 return 0;
137 }
234fbbf5
ACM
138
139 while (!readdir_r(tasks, &dirent, &next) && next) {
140 char *end;
141 pid = strtol(dirent.d_name, &end, 10);
142 if (*end)
143 continue;
144
f5faf726
DA
145 /* already have tgid; jut want to update the comm */
146 (void) perf_event__get_comm_tgid(pid, event->comm.comm,
147 sizeof(event->comm.comm));
148
149 size = strlen(event->comm.comm) + 1;
9ac3e487 150 size = PERF_ALIGN(size, sizeof(u64));
f5faf726
DA
151 memset(event->comm.comm + size, 0, machine->id_hdr_size);
152 event->comm.header.size = (sizeof(event->comm) -
153 (sizeof(event->comm.comm) - size) +
154 machine->id_hdr_size);
155
9c90a61c 156 event->comm.tid = pid;
234fbbf5 157
1e6d5322
DA
158 if (process(tool, event, &synth_sample, machine) != 0) {
159 tgid = -1;
160 break;
161 }
234fbbf5 162 }
234fbbf5 163
9c90a61c
ACM
164 closedir(tasks);
165out:
9c90a61c 166 return tgid;
234fbbf5
ACM
167}
168
45694aa7 169static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
d20deb64 170 union perf_event *event,
8115d60c
ACM
171 pid_t pid, pid_t tgid,
172 perf_event__handler_t process,
62605dc5
ACM
173 struct machine *machine,
174 bool mmap_data)
234fbbf5
ACM
175{
176 char filename[PATH_MAX];
177 FILE *fp;
1e6d5322 178 int rc = 0;
234fbbf5
ACM
179
180 snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
181
182 fp = fopen(filename, "r");
183 if (fp == NULL) {
184 /*
185 * We raced with a task exiting - just return:
186 */
187 pr_debug("couldn't open %s\n", filename);
188 return -1;
189 }
190
3090ffb5 191 event->header.type = PERF_RECORD_MMAP;
9c90a61c 192
234fbbf5 193 while (1) {
60648033
NK
194 char bf[BUFSIZ];
195 char prot[5];
196 char execname[PATH_MAX];
197 char anonstr[] = "//anon";
234fbbf5 198 size_t size;
5c5e854b 199 ssize_t n;
60648033 200
234fbbf5
ACM
201 if (fgets(bf, sizeof(bf), fp) == NULL)
202 break;
203
60648033
NK
204 /* ensure null termination since stack will be reused. */
205 strcpy(execname, "");
206
234fbbf5 207 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
3090ffb5
SE
208 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n",
209 &event->mmap.start, &event->mmap.len, prot,
210 &event->mmap.pgoff,
211 execname);
9d4ecc88
DZ
212 /*
213 * Anon maps don't have the execname.
214 */
215 if (n < 4)
5c5e854b 216 continue;
62605dc5
ACM
217 /*
218 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
219 */
220 event->header.misc = PERF_RECORD_MISC_USER;
60648033 221
62605dc5
ACM
222 if (prot[2] != 'x') {
223 if (!mmap_data || prot[0] != 'r')
224 continue;
225
226 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
227 }
60648033
NK
228
229 if (!strcmp(execname, ""))
230 strcpy(execname, anonstr);
231
232 size = strlen(execname) + 1;
3090ffb5 233 memcpy(event->mmap.filename, execname, size);
60648033 234 size = PERF_ALIGN(size, sizeof(u64));
3090ffb5
SE
235 event->mmap.len -= event->mmap.start;
236 event->mmap.header.size = (sizeof(event->mmap) -
237 (sizeof(event->mmap.filename) - size));
238 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
239 event->mmap.header.size += machine->id_hdr_size;
240 event->mmap.pid = tgid;
241 event->mmap.tid = pid;
60648033
NK
242
243 if (process(tool, event, &synth_sample, machine) != 0) {
244 rc = -1;
245 break;
234fbbf5
ACM
246 }
247 }
248
249 fclose(fp);
1e6d5322 250 return rc;
234fbbf5
ACM
251}
252
45694aa7 253int perf_event__synthesize_modules(struct perf_tool *tool,
d20deb64 254 perf_event__handler_t process,
8115d60c 255 struct machine *machine)
b7cece76 256{
1e6d5322 257 int rc = 0;
b7cece76 258 struct rb_node *nd;
23346f21 259 struct map_groups *kmaps = &machine->kmaps;
8115d60c 260 union perf_event *event = zalloc((sizeof(event->mmap) +
743eb868 261 machine->id_hdr_size));
9c90a61c
ACM
262 if (event == NULL) {
263 pr_debug("Not enough memory synthesizing mmap event "
264 "for kernel modules\n");
265 return -1;
266 }
267
268 event->header.type = PERF_RECORD_MMAP;
b7cece76 269
a1645ce1
ZY
270 /*
271 * kernel uses 0 for user space maps, see kernel/perf_event.c
272 * __perf_event_mmap
273 */
23346f21 274 if (machine__is_host(machine))
9c90a61c 275 event->header.misc = PERF_RECORD_MISC_KERNEL;
a1645ce1 276 else
9c90a61c 277 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
a1645ce1
ZY
278
279 for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
b7cece76 280 nd; nd = rb_next(nd)) {
b7cece76
ACM
281 size_t size;
282 struct map *pos = rb_entry(nd, struct map, rb_node);
283
284 if (pos->dso->kernel)
285 continue;
286
9ac3e487 287 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
9c90a61c
ACM
288 event->mmap.header.type = PERF_RECORD_MMAP;
289 event->mmap.header.size = (sizeof(event->mmap) -
290 (sizeof(event->mmap.filename) - size));
743eb868
ACM
291 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
292 event->mmap.header.size += machine->id_hdr_size;
9c90a61c
ACM
293 event->mmap.start = pos->start;
294 event->mmap.len = pos->end - pos->start;
295 event->mmap.pid = machine->pid;
296
297 memcpy(event->mmap.filename, pos->dso->long_name,
b7cece76 298 pos->dso->long_name_len + 1);
1e6d5322
DA
299 if (process(tool, event, &synth_sample, machine) != 0) {
300 rc = -1;
301 break;
302 }
b7cece76
ACM
303 }
304
9c90a61c 305 free(event);
1e6d5322 306 return rc;
b7cece76
ACM
307}
308
8115d60c
ACM
309static int __event__synthesize_thread(union perf_event *comm_event,
310 union perf_event *mmap_event,
defd8d38
DA
311 pid_t pid, int full,
312 perf_event__handler_t process,
45694aa7 313 struct perf_tool *tool,
62605dc5 314 struct machine *machine, bool mmap_data)
234fbbf5 315{
defd8d38 316 pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full,
743eb868 317 process, machine);
234fbbf5
ACM
318 if (tgid == -1)
319 return -1;
45694aa7 320 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
62605dc5 321 process, machine, mmap_data);
234fbbf5
ACM
322}
323
45694aa7 324int perf_event__synthesize_thread_map(struct perf_tool *tool,
d20deb64 325 struct thread_map *threads,
7c940c18 326 perf_event__handler_t process,
62605dc5
ACM
327 struct machine *machine,
328 bool mmap_data)
9c90a61c 329{
8115d60c 330 union perf_event *comm_event, *mmap_event;
defd8d38 331 int err = -1, thread, j;
9c90a61c 332
743eb868 333 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
9c90a61c
ACM
334 if (comm_event == NULL)
335 goto out;
336
743eb868 337 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
9c90a61c
ACM
338 if (mmap_event == NULL)
339 goto out_free_comm;
340
401b8e13
ACM
341 err = 0;
342 for (thread = 0; thread < threads->nr; ++thread) {
343 if (__event__synthesize_thread(comm_event, mmap_event,
defd8d38 344 threads->map[thread], 0,
62605dc5
ACM
345 process, tool, machine,
346 mmap_data)) {
401b8e13
ACM
347 err = -1;
348 break;
349 }
defd8d38
DA
350
351 /*
352 * comm.pid is set to thread group id by
353 * perf_event__synthesize_comm
354 */
355 if ((int) comm_event->comm.pid != threads->map[thread]) {
356 bool need_leader = true;
357
358 /* is thread group leader in thread_map? */
359 for (j = 0; j < threads->nr; ++j) {
360 if ((int) comm_event->comm.pid == threads->map[j]) {
361 need_leader = false;
362 break;
363 }
364 }
365
366 /* if not, generate events for it */
367 if (need_leader &&
62605dc5
ACM
368 __event__synthesize_thread(comm_event, mmap_event,
369 comm_event->comm.pid, 0,
370 process, tool, machine,
371 mmap_data)) {
defd8d38
DA
372 err = -1;
373 break;
374 }
375 }
401b8e13 376 }
9c90a61c
ACM
377 free(mmap_event);
378out_free_comm:
379 free(comm_event);
380out:
381 return err;
382}
383
45694aa7 384int perf_event__synthesize_threads(struct perf_tool *tool,
d20deb64 385 perf_event__handler_t process,
62605dc5 386 struct machine *machine, bool mmap_data)
234fbbf5
ACM
387{
388 DIR *proc;
389 struct dirent dirent, *next;
8115d60c 390 union perf_event *comm_event, *mmap_event;
9c90a61c
ACM
391 int err = -1;
392
743eb868 393 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
9c90a61c
ACM
394 if (comm_event == NULL)
395 goto out;
396
743eb868 397 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
9c90a61c
ACM
398 if (mmap_event == NULL)
399 goto out_free_comm;
234fbbf5
ACM
400
401 proc = opendir("/proc");
9c90a61c
ACM
402 if (proc == NULL)
403 goto out_free_mmap;
234fbbf5
ACM
404
405 while (!readdir_r(proc, &dirent, &next) && next) {
406 char *end;
407 pid_t pid = strtol(dirent.d_name, &end, 10);
408
409 if (*end) /* only interested in proper numerical dirents */
410 continue;
ba361c92
ACM
411 /*
412 * We may race with exiting thread, so don't stop just because
413 * one thread couldn't be synthesized.
414 */
415 __event__synthesize_thread(comm_event, mmap_event, pid, 1,
62605dc5 416 process, tool, machine, mmap_data);
234fbbf5
ACM
417 }
418
9c90a61c 419 err = 0;
1e6d5322 420 closedir(proc);
9c90a61c
ACM
421out_free_mmap:
422 free(mmap_event);
423out_free_comm:
424 free(comm_event);
425out:
426 return err;
234fbbf5 427}
62daacb5 428
56b03f3c
ACM
429struct process_symbol_args {
430 const char *name;
431 u64 start;
432};
433
3b01a413 434static int find_symbol_cb(void *arg, const char *name, char type,
82151520 435 u64 start)
56b03f3c
ACM
436{
437 struct process_symbol_args *args = arg;
438
881516eb
ACM
439 /*
440 * Must be a function or at least an alias, as in PARISC64, where "_text" is
441 * an 'A' to the same address as "_stext".
442 */
443 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
444 type == 'A') || strcmp(name, args->name))
56b03f3c
ACM
445 return 0;
446
447 args->start = start;
448 return 1;
449}
450
45694aa7 451int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
d20deb64 452 perf_event__handler_t process,
8115d60c
ACM
453 struct machine *machine,
454 const char *symbol_name)
56b03f3c
ACM
455{
456 size_t size;
a1645ce1
ZY
457 const char *filename, *mmap_name;
458 char path[PATH_MAX];
459 char name_buff[PATH_MAX];
460 struct map *map;
9c90a61c 461 int err;
56b03f3c
ACM
462 /*
463 * We should get this from /sys/kernel/sections/.text, but till that is
464 * available use this, and after it is use this as a fallback for older
465 * kernels.
466 */
467 struct process_symbol_args args = { .name = symbol_name, };
8115d60c 468 union perf_event *event = zalloc((sizeof(event->mmap) +
743eb868 469 machine->id_hdr_size));
9c90a61c
ACM
470 if (event == NULL) {
471 pr_debug("Not enough memory synthesizing mmap event "
472 "for kernel modules\n");
473 return -1;
474 }
56b03f3c 475
48ea8f54 476 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
23346f21 477 if (machine__is_host(machine)) {
a1645ce1
ZY
478 /*
479 * kernel uses PERF_RECORD_MISC_USER for user space maps,
480 * see kernel/perf_event.c __perf_event_mmap
481 */
9c90a61c 482 event->header.misc = PERF_RECORD_MISC_KERNEL;
a1645ce1
ZY
483 filename = "/proc/kallsyms";
484 } else {
9c90a61c 485 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
23346f21 486 if (machine__is_default_guest(machine))
a1645ce1
ZY
487 filename = (char *) symbol_conf.default_guest_kallsyms;
488 else {
23346f21 489 sprintf(path, "%s/proc/kallsyms", machine->root_dir);
a1645ce1
ZY
490 filename = path;
491 }
492 }
493
0b9e01a4
TJ
494 if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) {
495 free(event);
56b03f3c 496 return -ENOENT;
0b9e01a4 497 }
56b03f3c 498
23346f21 499 map = machine->vmlinux_maps[MAP__FUNCTION];
9c90a61c 500 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
a1645ce1 501 "%s%s", mmap_name, symbol_name) + 1;
9ac3e487 502 size = PERF_ALIGN(size, sizeof(u64));
9c90a61c
ACM
503 event->mmap.header.type = PERF_RECORD_MMAP;
504 event->mmap.header.size = (sizeof(event->mmap) -
743eb868 505 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
9c90a61c
ACM
506 event->mmap.pgoff = args.start;
507 event->mmap.start = map->start;
508 event->mmap.len = map->end - event->mmap.start;
509 event->mmap.pid = machine->pid;
510
45694aa7 511 err = process(tool, event, &synth_sample, machine);
9c90a61c
ACM
512 free(event);
513
514 return err;
56b03f3c
ACM
515}
516
482ad897
ACM
517size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
518{
519 return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid);
520}
521
1d037ca1 522int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
d20deb64 523 union perf_event *event,
162f0bef 524 struct perf_sample *sample,
743eb868 525 struct machine *machine)
62daacb5 526{
162f0bef 527 return machine__process_comm_event(machine, event, sample);
62daacb5
ACM
528}
529
1d037ca1 530int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
d20deb64 531 union perf_event *event,
162f0bef 532 struct perf_sample *sample,
b0a7d1a0 533 struct machine *machine)
62daacb5 534{
162f0bef 535 return machine__process_lost_event(machine, event, sample);
a1645ce1 536}
b7cece76 537
482ad897
ACM
538size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
539{
62605dc5 540 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
482ad897 541 event->mmap.pid, event->mmap.tid, event->mmap.start,
62605dc5
ACM
542 event->mmap.len, event->mmap.pgoff,
543 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
544 event->mmap.filename);
482ad897
ACM
545}
546
5c5e854b
SE
547size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
548{
549 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
62605dc5 550 " %02x:%02x %"PRIu64" %"PRIu64"]: %c %s\n",
5c5e854b
SE
551 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
552 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
553 event->mmap2.min, event->mmap2.ino,
554 event->mmap2.ino_generation,
62605dc5 555 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
5c5e854b
SE
556 event->mmap2.filename);
557}
558
b0a7d1a0 559int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
d20deb64 560 union perf_event *event,
162f0bef 561 struct perf_sample *sample,
743eb868 562 struct machine *machine)
a1645ce1 563{
162f0bef 564 return machine__process_mmap_event(machine, event, sample);
62daacb5
ACM
565}
566
5c5e854b
SE
567int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
568 union perf_event *event,
162f0bef 569 struct perf_sample *sample,
5c5e854b
SE
570 struct machine *machine)
571{
162f0bef 572 return machine__process_mmap2_event(machine, event, sample);
5c5e854b
SE
573}
574
482ad897
ACM
575size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
576{
577 return fprintf(fp, "(%d:%d):(%d:%d)\n",
578 event->fork.pid, event->fork.tid,
579 event->fork.ppid, event->fork.ptid);
580}
581
f62d3f0f 582int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
d20deb64 583 union perf_event *event,
162f0bef 584 struct perf_sample *sample,
f62d3f0f 585 struct machine *machine)
62daacb5 586{
162f0bef 587 return machine__process_fork_event(machine, event, sample);
62daacb5 588}
1ed091c4 589
f62d3f0f
ACM
590int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
591 union perf_event *event,
162f0bef 592 struct perf_sample *sample,
f62d3f0f
ACM
593 struct machine *machine)
594{
162f0bef 595 return machine__process_exit_event(machine, event, sample);
f62d3f0f
ACM
596}
597
482ad897
ACM
598size_t perf_event__fprintf(union perf_event *event, FILE *fp)
599{
600 size_t ret = fprintf(fp, "PERF_RECORD_%s",
601 perf_event__name(event->header.type));
602
603 switch (event->header.type) {
604 case PERF_RECORD_COMM:
605 ret += perf_event__fprintf_comm(event, fp);
606 break;
607 case PERF_RECORD_FORK:
608 case PERF_RECORD_EXIT:
609 ret += perf_event__fprintf_task(event, fp);
610 break;
611 case PERF_RECORD_MMAP:
612 ret += perf_event__fprintf_mmap(event, fp);
613 break;
5c5e854b
SE
614 case PERF_RECORD_MMAP2:
615 ret += perf_event__fprintf_mmap2(event, fp);
616 break;
482ad897
ACM
617 default:
618 ret += fprintf(fp, "\n");
619 }
620
621 return ret;
622}
623
b0a7d1a0
ACM
624int perf_event__process(struct perf_tool *tool __maybe_unused,
625 union perf_event *event,
162f0bef 626 struct perf_sample *sample,
b0a7d1a0 627 struct machine *machine)
b83f920e 628{
162f0bef 629 return machine__process_event(machine, event, sample);
b83f920e
SD
630}
631
316c7136 632void thread__find_addr_map(struct thread *thread,
743eb868
ACM
633 struct machine *machine, u8 cpumode,
634 enum map_type type, u64 addr,
326f59bf 635 struct addr_location *al)
1ed091c4 636{
316c7136 637 struct map_groups *mg = &thread->mg;
5b7ba82a 638 bool load_map = false;
1ed091c4 639
316c7136 640 al->thread = thread;
1ed091c4 641 al->addr = addr;
a1645ce1
ZY
642 al->cpumode = cpumode;
643 al->filtered = false;
1ed091c4 644
743eb868
ACM
645 if (machine == NULL) {
646 al->map = NULL;
647 return;
648 }
649
a1645ce1 650 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
1ed091c4 651 al->level = 'k';
23346f21 652 mg = &machine->kmaps;
5b7ba82a 653 load_map = true;
a1645ce1 654 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
1ed091c4 655 al->level = '.';
a1645ce1
ZY
656 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
657 al->level = 'g';
23346f21 658 mg = &machine->kmaps;
5b7ba82a 659 load_map = true;
a1645ce1
ZY
660 } else {
661 /*
662 * 'u' means guest os user space.
663 * TODO: We don't support guest user space. Might support late.
664 */
665 if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
666 al->level = 'u';
667 else
668 al->level = 'H';
1ed091c4 669 al->map = NULL;
a1645ce1
ZY
670
671 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
672 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
673 !perf_guest)
674 al->filtered = true;
675 if ((cpumode == PERF_RECORD_MISC_USER ||
676 cpumode == PERF_RECORD_MISC_KERNEL) &&
677 !perf_host)
678 al->filtered = true;
679
1ed091c4
ACM
680 return;
681 }
682try_again:
9958e1f0 683 al->map = map_groups__find(mg, type, al->addr);
1ed091c4
ACM
684 if (al->map == NULL) {
685 /*
686 * If this is outside of all known maps, and is a negative
687 * address, try to look it up in the kernel dso, as it might be
688 * a vsyscall or vdso (which executes in user-mode).
689 *
690 * XXX This is nasty, we should have a symbol list in the
691 * "[vdso]" dso, but for now lets use the old trick of looking
692 * in the whole kernel symbol list.
693 */
a1645ce1 694 if ((long long)al->addr < 0 &&
6c6804fb 695 cpumode == PERF_RECORD_MISC_USER &&
23346f21
ACM
696 machine && mg != &machine->kmaps) {
697 mg = &machine->kmaps;
1ed091c4
ACM
698 goto try_again;
699 }
5b7ba82a
AH
700 } else {
701 /*
702 * Kernel maps might be changed when loading symbols so loading
703 * must be done prior to using kernel maps.
704 */
705 if (load_map)
326f59bf 706 map__load(al->map, machine->symbol_filter);
1ed091c4 707 al->addr = al->map->map_ip(al->map, al->addr);
5b7ba82a 708 }
59ee68ec
ACM
709}
710
743eb868
ACM
711void thread__find_addr_location(struct thread *thread, struct machine *machine,
712 u8 cpumode, enum map_type type, u64 addr,
61710bde 713 struct addr_location *al)
59ee68ec 714{
326f59bf 715 thread__find_addr_map(thread, machine, cpumode, type, addr, al);
59ee68ec 716 if (al->map != NULL)
61710bde
AH
717 al->sym = map__find_symbol(al->map, al->addr,
718 machine->symbol_filter);
59ee68ec
ACM
719 else
720 al->sym = NULL;
1ed091c4
ACM
721}
722
8115d60c 723int perf_event__preprocess_sample(const union perf_event *event,
743eb868 724 struct machine *machine,
8115d60c 725 struct addr_location *al,
e44baa3e 726 struct perf_sample *sample)
1ed091c4 727{
8115d60c 728 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
ef89325f
AH
729 struct thread *thread = machine__findnew_thread(machine, sample->pid,
730 sample->pid);
41a37e20 731
1ed091c4
ACM
732 if (thread == NULL)
733 return -1;
734
1f3878c1 735 if (thread__is_filtered(thread))
c410a338
ACM
736 goto out_filtered;
737
b9c5143a 738 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
1f626bc3 739 /*
743eb868 740 * Have we already created the kernel maps for this machine?
1f626bc3
ACM
741 *
742 * This should have happened earlier, when we processed the kernel MMAP
743 * events, but for older perf.data files there was no such thing, so do
744 * it now.
745 */
746 if (cpumode == PERF_RECORD_MISC_KERNEL &&
743eb868
ACM
747 machine->vmlinux_maps[MAP__FUNCTION] == NULL)
748 machine__create_kernel_maps(machine);
1ed091c4 749
743eb868 750 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
ef89325f 751 sample->ip, al);
1ed091c4
ACM
752 dump_printf(" ...... dso: %s\n",
753 al->map ? al->map->dso->long_name :
754 al->level == 'H' ? "[hypervisor]" : "<not found>");
96415e4d 755 al->sym = NULL;
8d50e5b4 756 al->cpu = sample->cpu;
96415e4d
ACM
757
758 if (al->map) {
cb8f4e9a
NK
759 struct dso *dso = al->map->dso;
760
96415e4d 761 if (symbol_conf.dso_list &&
cb8f4e9a
NK
762 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
763 dso->short_name) ||
764 (dso->short_name != dso->long_name &&
765 strlist__has_entry(symbol_conf.dso_list,
766 dso->long_name)))))
96415e4d 767 goto out_filtered;
96415e4d 768
e44baa3e
AH
769 al->sym = map__find_symbol(al->map, al->addr,
770 machine->symbol_filter);
96415e4d 771 }
c410a338 772
1500b93b
FT
773 if (symbol_conf.sym_list &&
774 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
775 al->sym->name)))
c410a338
ACM
776 goto out_filtered;
777
c410a338
ACM
778 return 0;
779
780out_filtered:
781 al->filtered = true;
1ed091c4
ACM
782 return 0;
783}
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