1 #include <linux/types.h>
11 #include "thread_map.h"
12 #include "symbol/kallsyms.h"
16 static const char *perf_event__names[] = {
18 [PERF_RECORD_MMAP] = "MMAP",
19 [PERF_RECORD_MMAP2] = "MMAP2",
20 [PERF_RECORD_LOST] = "LOST",
21 [PERF_RECORD_COMM] = "COMM",
22 [PERF_RECORD_EXIT] = "EXIT",
23 [PERF_RECORD_THROTTLE] = "THROTTLE",
24 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
25 [PERF_RECORD_FORK] = "FORK",
26 [PERF_RECORD_READ] = "READ",
27 [PERF_RECORD_SAMPLE] = "SAMPLE",
28 [PERF_RECORD_AUX] = "AUX",
29 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
30 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
31 [PERF_RECORD_SWITCH] = "SWITCH",
32 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE",
33 [PERF_RECORD_HEADER_ATTR] = "ATTR",
34 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
35 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
36 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
37 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
38 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
39 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
40 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
41 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
42 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
43 [PERF_RECORD_CPU_MAP] = "CPU_MAP",
44 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
45 [PERF_RECORD_STAT] = "STAT",
46 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
47 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
48 [PERF_RECORD_TIME_CONV] = "TIME_CONV",
51 const char *perf_event__name(unsigned int id)
53 if (id >= ARRAY_SIZE(perf_event__names))
55 if (!perf_event__names[id])
57 return perf_event__names[id];
60 static int perf_tool__process_synth_event(struct perf_tool *tool,
61 union perf_event *event,
62 struct machine *machine,
63 perf_event__handler_t process)
65 struct perf_sample synth_sample = {
72 .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
75 return process(tool, event, &synth_sample, machine);
79 * Assumes that the first 4095 bytes of /proc/pid/stat contains
80 * the comm, tgid and ppid.
82 static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
83 pid_t *tgid, pid_t *ppid)
85 char filename[PATH_MAX];
90 char *nl, *name, *tgids, *ppids;
95 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
97 fd = open(filename, O_RDONLY);
99 pr_debug("couldn't open %s\n", filename);
103 n = read(fd, bf, sizeof(bf) - 1);
106 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
112 name = strstr(bf, "Name:");
113 tgids = strstr(bf, "Tgid:");
114 ppids = strstr(bf, "PPid:");
117 name += 5; /* strlen("Name:") */
119 while (*name && isspace(*name))
122 nl = strchr(name, '\n');
129 memcpy(comm, name, size);
132 pr_debug("Name: string not found for pid %d\n", pid);
136 tgids += 5; /* strlen("Tgid:") */
139 pr_debug("Tgid: string not found for pid %d\n", pid);
143 ppids += 5; /* strlen("PPid:") */
146 pr_debug("PPid: string not found for pid %d\n", pid);
152 static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
153 struct machine *machine,
154 pid_t *tgid, pid_t *ppid)
160 memset(&event->comm, 0, sizeof(event->comm));
162 if (machine__is_host(machine)) {
163 if (perf_event__get_comm_ids(pid, event->comm.comm,
164 sizeof(event->comm.comm),
169 *tgid = machine->pid;
175 event->comm.pid = *tgid;
176 event->comm.header.type = PERF_RECORD_COMM;
178 size = strlen(event->comm.comm) + 1;
179 size = PERF_ALIGN(size, sizeof(u64));
180 memset(event->comm.comm + size, 0, machine->id_hdr_size);
181 event->comm.header.size = (sizeof(event->comm) -
182 (sizeof(event->comm.comm) - size) +
183 machine->id_hdr_size);
184 event->comm.tid = pid;
189 pid_t perf_event__synthesize_comm(struct perf_tool *tool,
190 union perf_event *event, pid_t pid,
191 perf_event__handler_t process,
192 struct machine *machine)
196 if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
199 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
205 static int perf_event__synthesize_fork(struct perf_tool *tool,
206 union perf_event *event,
207 pid_t pid, pid_t tgid, pid_t ppid,
208 perf_event__handler_t process,
209 struct machine *machine)
211 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
214 * for main thread set parent to ppid from status file. For other
215 * threads set parent pid to main thread. ie., assume main thread
216 * spawns all threads in a process
219 event->fork.ppid = ppid;
220 event->fork.ptid = ppid;
222 event->fork.ppid = tgid;
223 event->fork.ptid = tgid;
225 event->fork.pid = tgid;
226 event->fork.tid = pid;
227 event->fork.header.type = PERF_RECORD_FORK;
229 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
231 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
237 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
238 union perf_event *event,
239 pid_t pid, pid_t tgid,
240 perf_event__handler_t process,
241 struct machine *machine,
243 unsigned int proc_map_timeout)
245 char filename[PATH_MAX];
247 unsigned long long t;
248 bool truncation = false;
249 unsigned long long timeout = proc_map_timeout * 1000000ULL;
252 if (machine__is_default_guest(machine))
255 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
256 machine->root_dir, pid);
258 fp = fopen(filename, "r");
261 * We raced with a task exiting - just return:
263 pr_debug("couldn't open %s\n", filename);
267 event->header.type = PERF_RECORD_MMAP2;
273 char execname[PATH_MAX];
274 char anonstr[] = "//anon";
279 if (fgets(bf, sizeof(bf), fp) == NULL)
282 if ((rdclock() - t) > timeout) {
283 pr_warning("Reading %s time out. "
284 "You may want to increase "
285 "the time limit by --proc-map-timeout\n",
291 /* ensure null termination since stack will be reused. */
292 strcpy(execname, "");
294 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
295 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %[^\n]\n",
296 &event->mmap2.start, &event->mmap2.len, prot,
297 &event->mmap2.pgoff, &event->mmap2.maj,
302 * Anon maps don't have the execname.
307 event->mmap2.ino = (u64)ino;
310 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
312 if (machine__is_host(machine))
313 event->header.misc = PERF_RECORD_MISC_USER;
315 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
317 /* map protection and flags bits */
318 event->mmap2.prot = 0;
319 event->mmap2.flags = 0;
321 event->mmap2.prot |= PROT_READ;
323 event->mmap2.prot |= PROT_WRITE;
325 event->mmap2.prot |= PROT_EXEC;
328 event->mmap2.flags |= MAP_SHARED;
330 event->mmap2.flags |= MAP_PRIVATE;
332 if (prot[2] != 'x') {
333 if (!mmap_data || prot[0] != 'r')
336 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
341 event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
343 if (!strcmp(execname, ""))
344 strcpy(execname, anonstr);
346 size = strlen(execname) + 1;
347 memcpy(event->mmap2.filename, execname, size);
348 size = PERF_ALIGN(size, sizeof(u64));
349 event->mmap2.len -= event->mmap.start;
350 event->mmap2.header.size = (sizeof(event->mmap2) -
351 (sizeof(event->mmap2.filename) - size));
352 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
353 event->mmap2.header.size += machine->id_hdr_size;
354 event->mmap2.pid = tgid;
355 event->mmap2.tid = pid;
357 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
370 int perf_event__synthesize_modules(struct perf_tool *tool,
371 perf_event__handler_t process,
372 struct machine *machine)
376 struct map_groups *kmaps = &machine->kmaps;
377 struct maps *maps = &kmaps->maps[MAP__FUNCTION];
378 union perf_event *event = zalloc((sizeof(event->mmap) +
379 machine->id_hdr_size));
381 pr_debug("Not enough memory synthesizing mmap event "
382 "for kernel modules\n");
386 event->header.type = PERF_RECORD_MMAP;
389 * kernel uses 0 for user space maps, see kernel/perf_event.c
392 if (machine__is_host(machine))
393 event->header.misc = PERF_RECORD_MISC_KERNEL;
395 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
397 for (pos = maps__first(maps); pos; pos = map__next(pos)) {
400 if (__map__is_kernel(pos))
403 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
404 event->mmap.header.type = PERF_RECORD_MMAP;
405 event->mmap.header.size = (sizeof(event->mmap) -
406 (sizeof(event->mmap.filename) - size));
407 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
408 event->mmap.header.size += machine->id_hdr_size;
409 event->mmap.start = pos->start;
410 event->mmap.len = pos->end - pos->start;
411 event->mmap.pid = machine->pid;
413 memcpy(event->mmap.filename, pos->dso->long_name,
414 pos->dso->long_name_len + 1);
415 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
425 static int __event__synthesize_thread(union perf_event *comm_event,
426 union perf_event *mmap_event,
427 union perf_event *fork_event,
429 perf_event__handler_t process,
430 struct perf_tool *tool,
431 struct machine *machine,
433 unsigned int proc_map_timeout)
435 char filename[PATH_MAX];
437 struct dirent *dirent;
441 /* special case: only send one comm event using passed in pid */
443 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
449 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
450 process, machine, mmap_data,
454 if (machine__is_default_guest(machine))
457 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
458 machine->root_dir, pid);
460 tasks = opendir(filename);
462 pr_debug("couldn't open %s\n", filename);
466 while ((dirent = readdir(tasks)) != NULL) {
470 _pid = strtol(dirent->d_name, &end, 10);
475 if (perf_event__prepare_comm(comm_event, _pid, machine,
479 if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
480 ppid, process, machine) < 0)
483 * Send the prepared comm event
485 if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
490 /* process the parent's maps too */
491 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
492 process, machine, mmap_data, proc_map_timeout);
502 int perf_event__synthesize_thread_map(struct perf_tool *tool,
503 struct thread_map *threads,
504 perf_event__handler_t process,
505 struct machine *machine,
507 unsigned int proc_map_timeout)
509 union perf_event *comm_event, *mmap_event, *fork_event;
510 int err = -1, thread, j;
512 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
513 if (comm_event == NULL)
516 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
517 if (mmap_event == NULL)
520 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
521 if (fork_event == NULL)
525 for (thread = 0; thread < threads->nr; ++thread) {
526 if (__event__synthesize_thread(comm_event, mmap_event,
528 thread_map__pid(threads, thread), 0,
529 process, tool, machine,
530 mmap_data, proc_map_timeout)) {
536 * comm.pid is set to thread group id by
537 * perf_event__synthesize_comm
539 if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) {
540 bool need_leader = true;
542 /* is thread group leader in thread_map? */
543 for (j = 0; j < threads->nr; ++j) {
544 if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) {
550 /* if not, generate events for it */
552 __event__synthesize_thread(comm_event, mmap_event,
554 comm_event->comm.pid, 0,
555 process, tool, machine,
556 mmap_data, proc_map_timeout)) {
571 int perf_event__synthesize_threads(struct perf_tool *tool,
572 perf_event__handler_t process,
573 struct machine *machine,
575 unsigned int proc_map_timeout)
578 char proc_path[PATH_MAX];
579 struct dirent *dirent;
580 union perf_event *comm_event, *mmap_event, *fork_event;
583 if (machine__is_default_guest(machine))
586 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
587 if (comm_event == NULL)
590 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
591 if (mmap_event == NULL)
594 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
595 if (fork_event == NULL)
598 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
599 proc = opendir(proc_path);
604 while ((dirent = readdir(proc)) != NULL) {
606 pid_t pid = strtol(dirent->d_name, &end, 10);
608 if (*end) /* only interested in proper numerical dirents */
611 * We may race with exiting thread, so don't stop just because
612 * one thread couldn't be synthesized.
614 __event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
615 1, process, tool, machine, mmap_data,
631 struct process_symbol_args {
636 static int find_symbol_cb(void *arg, const char *name, char type,
639 struct process_symbol_args *args = arg;
642 * Must be a function or at least an alias, as in PARISC64, where "_text" is
643 * an 'A' to the same address as "_stext".
645 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
646 type == 'A') || strcmp(name, args->name))
653 u64 kallsyms__get_function_start(const char *kallsyms_filename,
654 const char *symbol_name)
656 struct process_symbol_args args = { .name = symbol_name, };
658 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
664 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
665 perf_event__handler_t process,
666 struct machine *machine)
669 const char *mmap_name;
670 char name_buff[PATH_MAX];
671 struct map *map = machine__kernel_map(machine);
674 union perf_event *event;
680 * We should get this from /sys/kernel/sections/.text, but till that is
681 * available use this, and after it is use this as a fallback for older
684 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
686 pr_debug("Not enough memory synthesizing mmap event "
687 "for kernel modules\n");
691 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
692 if (machine__is_host(machine)) {
694 * kernel uses PERF_RECORD_MISC_USER for user space maps,
695 * see kernel/perf_event.c __perf_event_mmap
697 event->header.misc = PERF_RECORD_MISC_KERNEL;
699 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
702 kmap = map__kmap(map);
703 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
704 "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
705 size = PERF_ALIGN(size, sizeof(u64));
706 event->mmap.header.type = PERF_RECORD_MMAP;
707 event->mmap.header.size = (sizeof(event->mmap) -
708 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
709 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
710 event->mmap.start = map->start;
711 event->mmap.len = map->end - event->mmap.start;
712 event->mmap.pid = machine->pid;
714 err = perf_tool__process_synth_event(tool, event, machine, process);
720 int perf_event__synthesize_thread_map2(struct perf_tool *tool,
721 struct thread_map *threads,
722 perf_event__handler_t process,
723 struct machine *machine)
725 union perf_event *event;
728 size = sizeof(event->thread_map);
729 size += threads->nr * sizeof(event->thread_map.entries[0]);
731 event = zalloc(size);
735 event->header.type = PERF_RECORD_THREAD_MAP;
736 event->header.size = size;
737 event->thread_map.nr = threads->nr;
739 for (i = 0; i < threads->nr; i++) {
740 struct thread_map_event_entry *entry = &event->thread_map.entries[i];
741 char *comm = thread_map__comm(threads, i);
746 entry->pid = thread_map__pid(threads, i);
747 strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
750 err = process(tool, event, NULL, machine);
756 static void synthesize_cpus(struct cpu_map_entries *cpus,
763 for (i = 0; i < map->nr; i++)
764 cpus->cpu[i] = map->map[i];
767 static void synthesize_mask(struct cpu_map_mask *mask,
768 struct cpu_map *map, int max)
772 mask->nr = BITS_TO_LONGS(max);
773 mask->long_size = sizeof(long);
775 for (i = 0; i < map->nr; i++)
776 set_bit(map->map[i], mask->mask);
779 static size_t cpus_size(struct cpu_map *map)
781 return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
784 static size_t mask_size(struct cpu_map *map, int *max)
790 for (i = 0; i < map->nr; i++) {
791 /* bit possition of the cpu is + 1 */
792 int bit = map->map[i] + 1;
798 return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long);
801 void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max)
803 size_t size_cpus, size_mask;
804 bool is_dummy = cpu_map__empty(map);
807 * Both array and mask data have variable size based
808 * on the number of cpus and their actual values.
809 * The size of the 'struct cpu_map_data' is:
811 * array = size of 'struct cpu_map_entries' +
812 * number of cpus * sizeof(u64)
814 * mask = size of 'struct cpu_map_mask' +
815 * maximum cpu bit converted to size of longs
817 * and finaly + the size of 'struct cpu_map_data'.
819 size_cpus = cpus_size(map);
820 size_mask = mask_size(map, max);
822 if (is_dummy || (size_cpus < size_mask)) {
824 *type = PERF_CPU_MAP__CPUS;
827 *type = PERF_CPU_MAP__MASK;
830 *size += sizeof(struct cpu_map_data);
831 return zalloc(*size);
834 void cpu_map_data__synthesize(struct cpu_map_data *data, struct cpu_map *map,
840 case PERF_CPU_MAP__CPUS:
841 synthesize_cpus((struct cpu_map_entries *) data->data, map);
843 case PERF_CPU_MAP__MASK:
844 synthesize_mask((struct cpu_map_mask *) data->data, map, max);
850 static struct cpu_map_event* cpu_map_event__new(struct cpu_map *map)
852 size_t size = sizeof(struct cpu_map_event);
853 struct cpu_map_event *event;
857 event = cpu_map_data__alloc(map, &size, &type, &max);
861 event->header.type = PERF_RECORD_CPU_MAP;
862 event->header.size = size;
863 event->data.type = type;
865 cpu_map_data__synthesize(&event->data, map, type, max);
869 int perf_event__synthesize_cpu_map(struct perf_tool *tool,
871 perf_event__handler_t process,
872 struct machine *machine)
874 struct cpu_map_event *event;
877 event = cpu_map_event__new(map);
881 err = process(tool, (union perf_event *) event, NULL, machine);
887 int perf_event__synthesize_stat_config(struct perf_tool *tool,
888 struct perf_stat_config *config,
889 perf_event__handler_t process,
890 struct machine *machine)
892 struct stat_config_event *event;
893 int size, i = 0, err;
895 size = sizeof(*event);
896 size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
898 event = zalloc(size);
902 event->header.type = PERF_RECORD_STAT_CONFIG;
903 event->header.size = size;
904 event->nr = PERF_STAT_CONFIG_TERM__MAX;
906 #define ADD(__term, __val) \
907 event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
908 event->data[i].val = __val; \
911 ADD(AGGR_MODE, config->aggr_mode)
912 ADD(INTERVAL, config->interval)
913 ADD(SCALE, config->scale)
915 WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
916 "stat config terms unbalanced\n");
919 err = process(tool, (union perf_event *) event, NULL, machine);
925 int perf_event__synthesize_stat(struct perf_tool *tool,
926 u32 cpu, u32 thread, u64 id,
927 struct perf_counts_values *count,
928 perf_event__handler_t process,
929 struct machine *machine)
931 struct stat_event event;
933 event.header.type = PERF_RECORD_STAT;
934 event.header.size = sizeof(event);
935 event.header.misc = 0;
939 event.thread = thread;
940 event.val = count->val;
941 event.ena = count->ena;
942 event.run = count->run;
944 return process(tool, (union perf_event *) &event, NULL, machine);
947 int perf_event__synthesize_stat_round(struct perf_tool *tool,
948 u64 evtime, u64 type,
949 perf_event__handler_t process,
950 struct machine *machine)
952 struct stat_round_event event;
954 event.header.type = PERF_RECORD_STAT_ROUND;
955 event.header.size = sizeof(event);
956 event.header.misc = 0;
961 return process(tool, (union perf_event *) &event, NULL, machine);
964 void perf_event__read_stat_config(struct perf_stat_config *config,
965 struct stat_config_event *event)
969 for (i = 0; i < event->nr; i++) {
971 switch (event->data[i].tag) {
972 #define CASE(__term, __val) \
973 case PERF_STAT_CONFIG_TERM__##__term: \
974 config->__val = event->data[i].val; \
977 CASE(AGGR_MODE, aggr_mode)
979 CASE(INTERVAL, interval)
982 pr_warning("unknown stat config term %" PRIu64 "\n",
988 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
992 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
997 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
1000 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
1001 union perf_event *event,
1002 struct perf_sample *sample,
1003 struct machine *machine)
1005 return machine__process_comm_event(machine, event, sample);
1008 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
1009 union perf_event *event,
1010 struct perf_sample *sample,
1011 struct machine *machine)
1013 return machine__process_lost_event(machine, event, sample);
1016 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
1017 union perf_event *event,
1018 struct perf_sample *sample __maybe_unused,
1019 struct machine *machine)
1021 return machine__process_aux_event(machine, event);
1024 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
1025 union perf_event *event,
1026 struct perf_sample *sample __maybe_unused,
1027 struct machine *machine)
1029 return machine__process_itrace_start_event(machine, event);
1032 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
1033 union perf_event *event,
1034 struct perf_sample *sample,
1035 struct machine *machine)
1037 return machine__process_lost_samples_event(machine, event, sample);
1040 int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
1041 union perf_event *event,
1042 struct perf_sample *sample __maybe_unused,
1043 struct machine *machine)
1045 return machine__process_switch_event(machine, event);
1048 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
1050 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
1051 event->mmap.pid, event->mmap.tid, event->mmap.start,
1052 event->mmap.len, event->mmap.pgoff,
1053 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
1054 event->mmap.filename);
1057 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
1059 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
1060 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
1061 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
1062 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
1063 event->mmap2.min, event->mmap2.ino,
1064 event->mmap2.ino_generation,
1065 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
1066 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
1067 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
1068 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
1069 event->mmap2.filename);
1072 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
1074 struct thread_map *threads = thread_map__new_event(&event->thread_map);
1077 ret = fprintf(fp, " nr: ");
1080 ret += thread_map__fprintf(threads, fp);
1082 ret += fprintf(fp, "failed to get threads from event\n");
1084 thread_map__put(threads);
1088 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
1090 struct cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
1093 ret = fprintf(fp, " nr: ");
1096 ret += cpu_map__fprintf(cpus, fp);
1098 ret += fprintf(fp, "failed to get cpumap from event\n");
1104 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
1105 union perf_event *event,
1106 struct perf_sample *sample,
1107 struct machine *machine)
1109 return machine__process_mmap_event(machine, event, sample);
1112 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
1113 union perf_event *event,
1114 struct perf_sample *sample,
1115 struct machine *machine)
1117 return machine__process_mmap2_event(machine, event, sample);
1120 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
1122 return fprintf(fp, "(%d:%d):(%d:%d)\n",
1123 event->fork.pid, event->fork.tid,
1124 event->fork.ppid, event->fork.ptid);
1127 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
1128 union perf_event *event,
1129 struct perf_sample *sample,
1130 struct machine *machine)
1132 return machine__process_fork_event(machine, event, sample);
1135 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
1136 union perf_event *event,
1137 struct perf_sample *sample,
1138 struct machine *machine)
1140 return machine__process_exit_event(machine, event, sample);
1143 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
1145 return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n",
1146 event->aux.aux_offset, event->aux.aux_size,
1148 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
1149 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "");
1152 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
1154 return fprintf(fp, " pid: %u tid: %u\n",
1155 event->itrace_start.pid, event->itrace_start.tid);
1158 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
1160 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1161 const char *in_out = out ? "OUT" : "IN ";
1163 if (event->header.type == PERF_RECORD_SWITCH)
1164 return fprintf(fp, " %s\n", in_out);
1166 return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n",
1167 in_out, out ? "next" : "prev",
1168 event->context_switch.next_prev_pid,
1169 event->context_switch.next_prev_tid);
1172 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
1174 size_t ret = fprintf(fp, "PERF_RECORD_%s",
1175 perf_event__name(event->header.type));
1177 switch (event->header.type) {
1178 case PERF_RECORD_COMM:
1179 ret += perf_event__fprintf_comm(event, fp);
1181 case PERF_RECORD_FORK:
1182 case PERF_RECORD_EXIT:
1183 ret += perf_event__fprintf_task(event, fp);
1185 case PERF_RECORD_MMAP:
1186 ret += perf_event__fprintf_mmap(event, fp);
1188 case PERF_RECORD_MMAP2:
1189 ret += perf_event__fprintf_mmap2(event, fp);
1191 case PERF_RECORD_AUX:
1192 ret += perf_event__fprintf_aux(event, fp);
1194 case PERF_RECORD_ITRACE_START:
1195 ret += perf_event__fprintf_itrace_start(event, fp);
1197 case PERF_RECORD_SWITCH:
1198 case PERF_RECORD_SWITCH_CPU_WIDE:
1199 ret += perf_event__fprintf_switch(event, fp);
1202 ret += fprintf(fp, "\n");
1208 int perf_event__process(struct perf_tool *tool __maybe_unused,
1209 union perf_event *event,
1210 struct perf_sample *sample,
1211 struct machine *machine)
1213 return machine__process_event(machine, event, sample);
1216 void thread__find_addr_map(struct thread *thread, u8 cpumode,
1217 enum map_type type, u64 addr,
1218 struct addr_location *al)
1220 struct map_groups *mg = thread->mg;
1221 struct machine *machine = mg->machine;
1222 bool load_map = false;
1224 al->machine = machine;
1225 al->thread = thread;
1227 al->cpumode = cpumode;
1230 if (machine == NULL) {
1235 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
1237 mg = &machine->kmaps;
1239 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
1241 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
1243 mg = &machine->kmaps;
1245 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
1251 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
1252 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
1254 al->filtered |= (1 << HIST_FILTER__GUEST);
1255 if ((cpumode == PERF_RECORD_MISC_USER ||
1256 cpumode == PERF_RECORD_MISC_KERNEL) &&
1258 al->filtered |= (1 << HIST_FILTER__HOST);
1263 al->map = map_groups__find(mg, type, al->addr);
1264 if (al->map == NULL) {
1266 * If this is outside of all known maps, and is a negative
1267 * address, try to look it up in the kernel dso, as it might be
1268 * a vsyscall or vdso (which executes in user-mode).
1270 * XXX This is nasty, we should have a symbol list in the
1271 * "[vdso]" dso, but for now lets use the old trick of looking
1272 * in the whole kernel symbol list.
1274 if (cpumode == PERF_RECORD_MISC_USER && machine &&
1275 mg != &machine->kmaps &&
1276 machine__kernel_ip(machine, al->addr)) {
1277 mg = &machine->kmaps;
1283 * Kernel maps might be changed when loading symbols so loading
1284 * must be done prior to using kernel maps.
1287 map__load(al->map, machine->symbol_filter);
1288 al->addr = al->map->map_ip(al->map, al->addr);
1292 void thread__find_addr_location(struct thread *thread,
1293 u8 cpumode, enum map_type type, u64 addr,
1294 struct addr_location *al)
1296 thread__find_addr_map(thread, cpumode, type, addr, al);
1297 if (al->map != NULL)
1298 al->sym = map__find_symbol(al->map, al->addr,
1299 thread->mg->machine->symbol_filter);
1305 * Callers need to drop the reference to al->thread, obtained in
1306 * machine__findnew_thread()
1308 int machine__resolve(struct machine *machine, struct addr_location *al,
1309 struct perf_sample *sample)
1311 struct thread *thread = machine__findnew_thread(machine, sample->pid,
1317 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
1319 * Have we already created the kernel maps for this machine?
1321 * This should have happened earlier, when we processed the kernel MMAP
1322 * events, but for older perf.data files there was no such thing, so do
1325 if (sample->cpumode == PERF_RECORD_MISC_KERNEL &&
1326 machine__kernel_map(machine) == NULL)
1327 machine__create_kernel_maps(machine);
1329 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al);
1330 dump_printf(" ...... dso: %s\n",
1331 al->map ? al->map->dso->long_name :
1332 al->level == 'H' ? "[hypervisor]" : "<not found>");
1334 if (thread__is_filtered(thread))
1335 al->filtered |= (1 << HIST_FILTER__THREAD);
1338 al->cpu = sample->cpu;
1342 struct perf_env *env = machine->env;
1344 if (env && env->cpu)
1345 al->socket = env->cpu[al->cpu].socket_id;
1349 struct dso *dso = al->map->dso;
1351 if (symbol_conf.dso_list &&
1352 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
1354 (dso->short_name != dso->long_name &&
1355 strlist__has_entry(symbol_conf.dso_list,
1356 dso->long_name))))) {
1357 al->filtered |= (1 << HIST_FILTER__DSO);
1360 al->sym = map__find_symbol(al->map, al->addr,
1361 machine->symbol_filter);
1364 if (symbol_conf.sym_list &&
1365 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
1367 al->filtered |= (1 << HIST_FILTER__SYMBOL);
1374 * The preprocess_sample method will return with reference counts for the
1375 * in it, when done using (and perhaps getting ref counts if needing to
1376 * keep a pointer to one of those entries) it must be paired with
1377 * addr_location__put(), so that the refcounts can be decremented.
1379 void addr_location__put(struct addr_location *al)
1381 thread__zput(al->thread);
1384 bool is_bts_event(struct perf_event_attr *attr)
1386 return attr->type == PERF_TYPE_HARDWARE &&
1387 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
1388 attr->sample_period == 1;
1391 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
1393 if (attr->type == PERF_TYPE_SOFTWARE &&
1394 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
1395 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
1396 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
1399 if (is_bts_event(attr))
1405 void thread__resolve(struct thread *thread, struct addr_location *al,
1406 struct perf_sample *sample)
1408 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al);
1410 thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE,
1413 al->cpu = sample->cpu;
1417 al->sym = map__find_symbol(al->map, al->addr, NULL);