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",
50 const char *perf_event__name(unsigned int id)
52 if (id >= ARRAY_SIZE(perf_event__names))
54 if (!perf_event__names[id])
56 return perf_event__names[id];
59 static struct perf_sample synth_sample = {
69 * Assumes that the first 4095 bytes of /proc/pid/stat contains
70 * the comm, tgid and ppid.
72 static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
73 pid_t *tgid, pid_t *ppid)
75 char filename[PATH_MAX];
80 char *nl, *name, *tgids, *ppids;
85 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
87 fd = open(filename, O_RDONLY);
89 pr_debug("couldn't open %s\n", filename);
93 n = read(fd, bf, sizeof(bf) - 1);
96 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
102 name = strstr(bf, "Name:");
103 tgids = strstr(bf, "Tgid:");
104 ppids = strstr(bf, "PPid:");
107 name += 5; /* strlen("Name:") */
109 while (*name && isspace(*name))
112 nl = strchr(name, '\n');
119 memcpy(comm, name, size);
122 pr_debug("Name: string not found for pid %d\n", pid);
126 tgids += 5; /* strlen("Tgid:") */
129 pr_debug("Tgid: string not found for pid %d\n", pid);
133 ppids += 5; /* strlen("PPid:") */
136 pr_debug("PPid: string not found for pid %d\n", pid);
142 static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
143 struct machine *machine,
144 pid_t *tgid, pid_t *ppid)
150 memset(&event->comm, 0, sizeof(event->comm));
152 if (machine__is_host(machine)) {
153 if (perf_event__get_comm_ids(pid, event->comm.comm,
154 sizeof(event->comm.comm),
159 *tgid = machine->pid;
165 event->comm.pid = *tgid;
166 event->comm.header.type = PERF_RECORD_COMM;
168 size = strlen(event->comm.comm) + 1;
169 size = PERF_ALIGN(size, sizeof(u64));
170 memset(event->comm.comm + size, 0, machine->id_hdr_size);
171 event->comm.header.size = (sizeof(event->comm) -
172 (sizeof(event->comm.comm) - size) +
173 machine->id_hdr_size);
174 event->comm.tid = pid;
179 pid_t perf_event__synthesize_comm(struct perf_tool *tool,
180 union perf_event *event, pid_t pid,
181 perf_event__handler_t process,
182 struct machine *machine)
186 if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
189 if (process(tool, event, &synth_sample, machine) != 0)
195 static int perf_event__synthesize_fork(struct perf_tool *tool,
196 union perf_event *event,
197 pid_t pid, pid_t tgid, pid_t ppid,
198 perf_event__handler_t process,
199 struct machine *machine)
201 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
204 * for main thread set parent to ppid from status file. For other
205 * threads set parent pid to main thread. ie., assume main thread
206 * spawns all threads in a process
209 event->fork.ppid = ppid;
210 event->fork.ptid = ppid;
212 event->fork.ppid = tgid;
213 event->fork.ptid = tgid;
215 event->fork.pid = tgid;
216 event->fork.tid = pid;
217 event->fork.header.type = PERF_RECORD_FORK;
219 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
221 if (process(tool, event, &synth_sample, machine) != 0)
227 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
228 union perf_event *event,
229 pid_t pid, pid_t tgid,
230 perf_event__handler_t process,
231 struct machine *machine,
233 unsigned int proc_map_timeout)
235 char filename[PATH_MAX];
237 unsigned long long t;
238 bool truncation = false;
239 unsigned long long timeout = proc_map_timeout * 1000000ULL;
242 if (machine__is_default_guest(machine))
245 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
246 machine->root_dir, pid);
248 fp = fopen(filename, "r");
251 * We raced with a task exiting - just return:
253 pr_debug("couldn't open %s\n", filename);
257 event->header.type = PERF_RECORD_MMAP2;
263 char execname[PATH_MAX];
264 char anonstr[] = "//anon";
269 if (fgets(bf, sizeof(bf), fp) == NULL)
272 if ((rdclock() - t) > timeout) {
273 pr_warning("Reading %s time out. "
274 "You may want to increase "
275 "the time limit by --proc-map-timeout\n",
281 /* ensure null termination since stack will be reused. */
282 strcpy(execname, "");
284 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
285 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
286 &event->mmap2.start, &event->mmap2.len, prot,
287 &event->mmap2.pgoff, &event->mmap2.maj,
292 * Anon maps don't have the execname.
297 event->mmap2.ino = (u64)ino;
300 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
302 if (machine__is_host(machine))
303 event->header.misc = PERF_RECORD_MISC_USER;
305 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
307 /* map protection and flags bits */
308 event->mmap2.prot = 0;
309 event->mmap2.flags = 0;
311 event->mmap2.prot |= PROT_READ;
313 event->mmap2.prot |= PROT_WRITE;
315 event->mmap2.prot |= PROT_EXEC;
318 event->mmap2.flags |= MAP_SHARED;
320 event->mmap2.flags |= MAP_PRIVATE;
322 if (prot[2] != 'x') {
323 if (!mmap_data || prot[0] != 'r')
326 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
331 event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
333 if (!strcmp(execname, ""))
334 strcpy(execname, anonstr);
336 size = strlen(execname) + 1;
337 memcpy(event->mmap2.filename, execname, size);
338 size = PERF_ALIGN(size, sizeof(u64));
339 event->mmap2.len -= event->mmap.start;
340 event->mmap2.header.size = (sizeof(event->mmap2) -
341 (sizeof(event->mmap2.filename) - size));
342 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
343 event->mmap2.header.size += machine->id_hdr_size;
344 event->mmap2.pid = tgid;
345 event->mmap2.tid = pid;
347 if (process(tool, event, &synth_sample, machine) != 0) {
360 int perf_event__synthesize_modules(struct perf_tool *tool,
361 perf_event__handler_t process,
362 struct machine *machine)
366 struct map_groups *kmaps = &machine->kmaps;
367 struct maps *maps = &kmaps->maps[MAP__FUNCTION];
368 union perf_event *event = zalloc((sizeof(event->mmap) +
369 machine->id_hdr_size));
371 pr_debug("Not enough memory synthesizing mmap event "
372 "for kernel modules\n");
376 event->header.type = PERF_RECORD_MMAP;
379 * kernel uses 0 for user space maps, see kernel/perf_event.c
382 if (machine__is_host(machine))
383 event->header.misc = PERF_RECORD_MISC_KERNEL;
385 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
387 for (pos = maps__first(maps); pos; pos = map__next(pos)) {
390 if (__map__is_kernel(pos))
393 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
394 event->mmap.header.type = PERF_RECORD_MMAP;
395 event->mmap.header.size = (sizeof(event->mmap) -
396 (sizeof(event->mmap.filename) - size));
397 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
398 event->mmap.header.size += machine->id_hdr_size;
399 event->mmap.start = pos->start;
400 event->mmap.len = pos->end - pos->start;
401 event->mmap.pid = machine->pid;
403 memcpy(event->mmap.filename, pos->dso->long_name,
404 pos->dso->long_name_len + 1);
405 if (process(tool, event, &synth_sample, machine) != 0) {
415 static int __event__synthesize_thread(union perf_event *comm_event,
416 union perf_event *mmap_event,
417 union perf_event *fork_event,
419 perf_event__handler_t process,
420 struct perf_tool *tool,
421 struct machine *machine,
423 unsigned int proc_map_timeout)
425 char filename[PATH_MAX];
427 struct dirent dirent, *next;
431 /* special case: only send one comm event using passed in pid */
433 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
439 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
440 process, machine, mmap_data,
444 if (machine__is_default_guest(machine))
447 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
448 machine->root_dir, pid);
450 tasks = opendir(filename);
452 pr_debug("couldn't open %s\n", filename);
456 while (!readdir_r(tasks, &dirent, &next) && next) {
460 _pid = strtol(dirent.d_name, &end, 10);
465 if (perf_event__prepare_comm(comm_event, _pid, machine,
469 if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
470 ppid, process, machine) < 0)
473 * Send the prepared comm event
475 if (process(tool, comm_event, &synth_sample, machine) != 0)
480 /* process the parent's maps too */
481 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
482 process, machine, mmap_data, proc_map_timeout);
492 int perf_event__synthesize_thread_map(struct perf_tool *tool,
493 struct thread_map *threads,
494 perf_event__handler_t process,
495 struct machine *machine,
497 unsigned int proc_map_timeout)
499 union perf_event *comm_event, *mmap_event, *fork_event;
500 int err = -1, thread, j;
502 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
503 if (comm_event == NULL)
506 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
507 if (mmap_event == NULL)
510 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
511 if (fork_event == NULL)
515 for (thread = 0; thread < threads->nr; ++thread) {
516 if (__event__synthesize_thread(comm_event, mmap_event,
518 thread_map__pid(threads, thread), 0,
519 process, tool, machine,
520 mmap_data, proc_map_timeout)) {
526 * comm.pid is set to thread group id by
527 * perf_event__synthesize_comm
529 if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) {
530 bool need_leader = true;
532 /* is thread group leader in thread_map? */
533 for (j = 0; j < threads->nr; ++j) {
534 if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) {
540 /* if not, generate events for it */
542 __event__synthesize_thread(comm_event, mmap_event,
544 comm_event->comm.pid, 0,
545 process, tool, machine,
546 mmap_data, proc_map_timeout)) {
561 int perf_event__synthesize_threads(struct perf_tool *tool,
562 perf_event__handler_t process,
563 struct machine *machine,
565 unsigned int proc_map_timeout)
568 char proc_path[PATH_MAX];
569 struct dirent dirent, *next;
570 union perf_event *comm_event, *mmap_event, *fork_event;
573 if (machine__is_default_guest(machine))
576 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
577 if (comm_event == NULL)
580 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
581 if (mmap_event == NULL)
584 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
585 if (fork_event == NULL)
588 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
589 proc = opendir(proc_path);
594 while (!readdir_r(proc, &dirent, &next) && next) {
596 pid_t pid = strtol(dirent.d_name, &end, 10);
598 if (*end) /* only interested in proper numerical dirents */
601 * We may race with exiting thread, so don't stop just because
602 * one thread couldn't be synthesized.
604 __event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
605 1, process, tool, machine, mmap_data,
621 struct process_symbol_args {
626 static int find_symbol_cb(void *arg, const char *name, char type,
629 struct process_symbol_args *args = arg;
632 * Must be a function or at least an alias, as in PARISC64, where "_text" is
633 * an 'A' to the same address as "_stext".
635 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
636 type == 'A') || strcmp(name, args->name))
643 u64 kallsyms__get_function_start(const char *kallsyms_filename,
644 const char *symbol_name)
646 struct process_symbol_args args = { .name = symbol_name, };
648 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
654 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
655 perf_event__handler_t process,
656 struct machine *machine)
659 const char *mmap_name;
660 char name_buff[PATH_MAX];
661 struct map *map = machine__kernel_map(machine);
664 union perf_event *event;
670 * We should get this from /sys/kernel/sections/.text, but till that is
671 * available use this, and after it is use this as a fallback for older
674 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
676 pr_debug("Not enough memory synthesizing mmap event "
677 "for kernel modules\n");
681 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
682 if (machine__is_host(machine)) {
684 * kernel uses PERF_RECORD_MISC_USER for user space maps,
685 * see kernel/perf_event.c __perf_event_mmap
687 event->header.misc = PERF_RECORD_MISC_KERNEL;
689 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
692 kmap = map__kmap(map);
693 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
694 "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
695 size = PERF_ALIGN(size, sizeof(u64));
696 event->mmap.header.type = PERF_RECORD_MMAP;
697 event->mmap.header.size = (sizeof(event->mmap) -
698 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
699 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
700 event->mmap.start = map->start;
701 event->mmap.len = map->end - event->mmap.start;
702 event->mmap.pid = machine->pid;
704 err = process(tool, event, &synth_sample, machine);
710 int perf_event__synthesize_thread_map2(struct perf_tool *tool,
711 struct thread_map *threads,
712 perf_event__handler_t process,
713 struct machine *machine)
715 union perf_event *event;
718 size = sizeof(event->thread_map);
719 size += threads->nr * sizeof(event->thread_map.entries[0]);
721 event = zalloc(size);
725 event->header.type = PERF_RECORD_THREAD_MAP;
726 event->header.size = size;
727 event->thread_map.nr = threads->nr;
729 for (i = 0; i < threads->nr; i++) {
730 struct thread_map_event_entry *entry = &event->thread_map.entries[i];
731 char *comm = thread_map__comm(threads, i);
736 entry->pid = thread_map__pid(threads, i);
737 strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
740 err = process(tool, event, NULL, machine);
746 static void synthesize_cpus(struct cpu_map_entries *cpus,
753 for (i = 0; i < map->nr; i++)
754 cpus->cpu[i] = map->map[i];
757 static void synthesize_mask(struct cpu_map_mask *mask,
758 struct cpu_map *map, int max)
762 mask->nr = BITS_TO_LONGS(max);
763 mask->long_size = sizeof(long);
765 for (i = 0; i < map->nr; i++)
766 set_bit(map->map[i], mask->mask);
769 static size_t cpus_size(struct cpu_map *map)
771 return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
774 static size_t mask_size(struct cpu_map *map, int *max)
780 for (i = 0; i < map->nr; i++) {
781 /* bit possition of the cpu is + 1 */
782 int bit = map->map[i] + 1;
788 return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long);
791 void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max)
793 size_t size_cpus, size_mask;
794 bool is_dummy = cpu_map__empty(map);
797 * Both array and mask data have variable size based
798 * on the number of cpus and their actual values.
799 * The size of the 'struct cpu_map_data' is:
801 * array = size of 'struct cpu_map_entries' +
802 * number of cpus * sizeof(u64)
804 * mask = size of 'struct cpu_map_mask' +
805 * maximum cpu bit converted to size of longs
807 * and finaly + the size of 'struct cpu_map_data'.
809 size_cpus = cpus_size(map);
810 size_mask = mask_size(map, max);
812 if (is_dummy || (size_cpus < size_mask)) {
814 *type = PERF_CPU_MAP__CPUS;
817 *type = PERF_CPU_MAP__MASK;
820 *size += sizeof(struct cpu_map_data);
821 return zalloc(*size);
824 void cpu_map_data__synthesize(struct cpu_map_data *data, struct cpu_map *map,
830 case PERF_CPU_MAP__CPUS:
831 synthesize_cpus((struct cpu_map_entries *) data->data, map);
833 case PERF_CPU_MAP__MASK:
834 synthesize_mask((struct cpu_map_mask *) data->data, map, max);
840 static struct cpu_map_event* cpu_map_event__new(struct cpu_map *map)
842 size_t size = sizeof(struct cpu_map_event);
843 struct cpu_map_event *event;
847 event = cpu_map_data__alloc(map, &size, &type, &max);
851 event->header.type = PERF_RECORD_CPU_MAP;
852 event->header.size = size;
853 event->data.type = type;
855 cpu_map_data__synthesize(&event->data, map, type, max);
859 int perf_event__synthesize_cpu_map(struct perf_tool *tool,
861 perf_event__handler_t process,
862 struct machine *machine)
864 struct cpu_map_event *event;
867 event = cpu_map_event__new(map);
871 err = process(tool, (union perf_event *) event, NULL, machine);
877 int perf_event__synthesize_stat_config(struct perf_tool *tool,
878 struct perf_stat_config *config,
879 perf_event__handler_t process,
880 struct machine *machine)
882 struct stat_config_event *event;
883 int size, i = 0, err;
885 size = sizeof(*event);
886 size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
888 event = zalloc(size);
892 event->header.type = PERF_RECORD_STAT_CONFIG;
893 event->header.size = size;
894 event->nr = PERF_STAT_CONFIG_TERM__MAX;
896 #define ADD(__term, __val) \
897 event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
898 event->data[i].val = __val; \
901 ADD(AGGR_MODE, config->aggr_mode)
902 ADD(INTERVAL, config->interval)
903 ADD(SCALE, config->scale)
905 WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
906 "stat config terms unbalanced\n");
909 err = process(tool, (union perf_event *) event, NULL, machine);
915 int perf_event__synthesize_stat(struct perf_tool *tool,
916 u32 cpu, u32 thread, u64 id,
917 struct perf_counts_values *count,
918 perf_event__handler_t process,
919 struct machine *machine)
921 struct stat_event event;
923 event.header.type = PERF_RECORD_STAT;
924 event.header.size = sizeof(event);
925 event.header.misc = 0;
929 event.thread = thread;
930 event.val = count->val;
931 event.ena = count->ena;
932 event.run = count->run;
934 return process(tool, (union perf_event *) &event, NULL, machine);
937 int perf_event__synthesize_stat_round(struct perf_tool *tool,
938 u64 evtime, u64 type,
939 perf_event__handler_t process,
940 struct machine *machine)
942 struct stat_round_event event;
944 event.header.type = PERF_RECORD_STAT_ROUND;
945 event.header.size = sizeof(event);
946 event.header.misc = 0;
951 return process(tool, (union perf_event *) &event, NULL, machine);
954 void perf_event__read_stat_config(struct perf_stat_config *config,
955 struct stat_config_event *event)
959 for (i = 0; i < event->nr; i++) {
961 switch (event->data[i].tag) {
962 #define CASE(__term, __val) \
963 case PERF_STAT_CONFIG_TERM__##__term: \
964 config->__val = event->data[i].val; \
967 CASE(AGGR_MODE, aggr_mode)
969 CASE(INTERVAL, interval)
972 pr_warning("unknown stat config term %" PRIu64 "\n",
978 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
982 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
987 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
990 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
991 union perf_event *event,
992 struct perf_sample *sample,
993 struct machine *machine)
995 return machine__process_comm_event(machine, event, sample);
998 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
999 union perf_event *event,
1000 struct perf_sample *sample,
1001 struct machine *machine)
1003 return machine__process_lost_event(machine, event, sample);
1006 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
1007 union perf_event *event,
1008 struct perf_sample *sample __maybe_unused,
1009 struct machine *machine)
1011 return machine__process_aux_event(machine, event);
1014 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
1015 union perf_event *event,
1016 struct perf_sample *sample __maybe_unused,
1017 struct machine *machine)
1019 return machine__process_itrace_start_event(machine, event);
1022 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
1023 union perf_event *event,
1024 struct perf_sample *sample,
1025 struct machine *machine)
1027 return machine__process_lost_samples_event(machine, event, sample);
1030 int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
1031 union perf_event *event,
1032 struct perf_sample *sample __maybe_unused,
1033 struct machine *machine)
1035 return machine__process_switch_event(machine, event);
1038 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
1040 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
1041 event->mmap.pid, event->mmap.tid, event->mmap.start,
1042 event->mmap.len, event->mmap.pgoff,
1043 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
1044 event->mmap.filename);
1047 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
1049 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
1050 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
1051 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
1052 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
1053 event->mmap2.min, event->mmap2.ino,
1054 event->mmap2.ino_generation,
1055 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
1056 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
1057 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
1058 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
1059 event->mmap2.filename);
1062 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
1064 struct thread_map *threads = thread_map__new_event(&event->thread_map);
1067 ret = fprintf(fp, " nr: ");
1070 ret += thread_map__fprintf(threads, fp);
1072 ret += fprintf(fp, "failed to get threads from event\n");
1074 thread_map__put(threads);
1078 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
1080 struct cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
1083 ret = fprintf(fp, " nr: ");
1086 ret += cpu_map__fprintf(cpus, fp);
1088 ret += fprintf(fp, "failed to get cpumap from event\n");
1094 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
1095 union perf_event *event,
1096 struct perf_sample *sample,
1097 struct machine *machine)
1099 return machine__process_mmap_event(machine, event, sample);
1102 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
1103 union perf_event *event,
1104 struct perf_sample *sample,
1105 struct machine *machine)
1107 return machine__process_mmap2_event(machine, event, sample);
1110 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
1112 return fprintf(fp, "(%d:%d):(%d:%d)\n",
1113 event->fork.pid, event->fork.tid,
1114 event->fork.ppid, event->fork.ptid);
1117 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
1118 union perf_event *event,
1119 struct perf_sample *sample,
1120 struct machine *machine)
1122 return machine__process_fork_event(machine, event, sample);
1125 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
1126 union perf_event *event,
1127 struct perf_sample *sample,
1128 struct machine *machine)
1130 return machine__process_exit_event(machine, event, sample);
1133 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
1135 return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n",
1136 event->aux.aux_offset, event->aux.aux_size,
1138 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
1139 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "");
1142 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
1144 return fprintf(fp, " pid: %u tid: %u\n",
1145 event->itrace_start.pid, event->itrace_start.tid);
1148 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
1150 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1151 const char *in_out = out ? "OUT" : "IN ";
1153 if (event->header.type == PERF_RECORD_SWITCH)
1154 return fprintf(fp, " %s\n", in_out);
1156 return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n",
1157 in_out, out ? "next" : "prev",
1158 event->context_switch.next_prev_pid,
1159 event->context_switch.next_prev_tid);
1162 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
1164 size_t ret = fprintf(fp, "PERF_RECORD_%s",
1165 perf_event__name(event->header.type));
1167 switch (event->header.type) {
1168 case PERF_RECORD_COMM:
1169 ret += perf_event__fprintf_comm(event, fp);
1171 case PERF_RECORD_FORK:
1172 case PERF_RECORD_EXIT:
1173 ret += perf_event__fprintf_task(event, fp);
1175 case PERF_RECORD_MMAP:
1176 ret += perf_event__fprintf_mmap(event, fp);
1178 case PERF_RECORD_MMAP2:
1179 ret += perf_event__fprintf_mmap2(event, fp);
1181 case PERF_RECORD_AUX:
1182 ret += perf_event__fprintf_aux(event, fp);
1184 case PERF_RECORD_ITRACE_START:
1185 ret += perf_event__fprintf_itrace_start(event, fp);
1187 case PERF_RECORD_SWITCH:
1188 case PERF_RECORD_SWITCH_CPU_WIDE:
1189 ret += perf_event__fprintf_switch(event, fp);
1192 ret += fprintf(fp, "\n");
1198 int perf_event__process(struct perf_tool *tool __maybe_unused,
1199 union perf_event *event,
1200 struct perf_sample *sample,
1201 struct machine *machine)
1203 return machine__process_event(machine, event, sample);
1206 void thread__find_addr_map(struct thread *thread, u8 cpumode,
1207 enum map_type type, u64 addr,
1208 struct addr_location *al)
1210 struct map_groups *mg = thread->mg;
1211 struct machine *machine = mg->machine;
1212 bool load_map = false;
1214 al->machine = machine;
1215 al->thread = thread;
1217 al->cpumode = cpumode;
1220 if (machine == NULL) {
1225 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
1227 mg = &machine->kmaps;
1229 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
1231 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
1233 mg = &machine->kmaps;
1235 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
1241 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
1242 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
1244 al->filtered |= (1 << HIST_FILTER__GUEST);
1245 if ((cpumode == PERF_RECORD_MISC_USER ||
1246 cpumode == PERF_RECORD_MISC_KERNEL) &&
1248 al->filtered |= (1 << HIST_FILTER__HOST);
1253 al->map = map_groups__find(mg, type, al->addr);
1254 if (al->map == NULL) {
1256 * If this is outside of all known maps, and is a negative
1257 * address, try to look it up in the kernel dso, as it might be
1258 * a vsyscall or vdso (which executes in user-mode).
1260 * XXX This is nasty, we should have a symbol list in the
1261 * "[vdso]" dso, but for now lets use the old trick of looking
1262 * in the whole kernel symbol list.
1264 if (cpumode == PERF_RECORD_MISC_USER && machine &&
1265 mg != &machine->kmaps &&
1266 machine__kernel_ip(machine, al->addr)) {
1267 mg = &machine->kmaps;
1273 * Kernel maps might be changed when loading symbols so loading
1274 * must be done prior to using kernel maps.
1277 map__load(al->map, machine->symbol_filter);
1278 al->addr = al->map->map_ip(al->map, al->addr);
1282 void thread__find_addr_location(struct thread *thread,
1283 u8 cpumode, enum map_type type, u64 addr,
1284 struct addr_location *al)
1286 thread__find_addr_map(thread, cpumode, type, addr, al);
1287 if (al->map != NULL)
1288 al->sym = map__find_symbol(al->map, al->addr,
1289 thread->mg->machine->symbol_filter);
1295 * Callers need to drop the reference to al->thread, obtained in
1296 * machine__findnew_thread()
1298 int perf_event__preprocess_sample(const union perf_event *event,
1299 struct machine *machine,
1300 struct addr_location *al,
1301 struct perf_sample *sample)
1303 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1304 struct thread *thread = machine__findnew_thread(machine, sample->pid,
1310 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
1312 * Have we already created the kernel maps for this machine?
1314 * This should have happened earlier, when we processed the kernel MMAP
1315 * events, but for older perf.data files there was no such thing, so do
1318 if (cpumode == PERF_RECORD_MISC_KERNEL &&
1319 machine__kernel_map(machine) == NULL)
1320 machine__create_kernel_maps(machine);
1322 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al);
1323 dump_printf(" ...... dso: %s\n",
1324 al->map ? al->map->dso->long_name :
1325 al->level == 'H' ? "[hypervisor]" : "<not found>");
1327 if (thread__is_filtered(thread))
1328 al->filtered |= (1 << HIST_FILTER__THREAD);
1331 al->cpu = sample->cpu;
1335 struct perf_env *env = machine->env;
1337 if (env && env->cpu)
1338 al->socket = env->cpu[al->cpu].socket_id;
1342 struct dso *dso = al->map->dso;
1344 if (symbol_conf.dso_list &&
1345 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
1347 (dso->short_name != dso->long_name &&
1348 strlist__has_entry(symbol_conf.dso_list,
1349 dso->long_name))))) {
1350 al->filtered |= (1 << HIST_FILTER__DSO);
1353 al->sym = map__find_symbol(al->map, al->addr,
1354 machine->symbol_filter);
1357 if (symbol_conf.sym_list &&
1358 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
1360 al->filtered |= (1 << HIST_FILTER__SYMBOL);
1367 * The preprocess_sample method will return with reference counts for the
1368 * in it, when done using (and perhaps getting ref counts if needing to
1369 * keep a pointer to one of those entries) it must be paired with
1370 * addr_location__put(), so that the refcounts can be decremented.
1372 void addr_location__put(struct addr_location *al)
1374 thread__zput(al->thread);
1377 bool is_bts_event(struct perf_event_attr *attr)
1379 return attr->type == PERF_TYPE_HARDWARE &&
1380 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
1381 attr->sample_period == 1;
1384 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
1386 if (attr->type == PERF_TYPE_SOFTWARE &&
1387 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
1388 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
1389 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
1392 if (is_bts_event(attr))
1398 void perf_event__preprocess_sample_addr(union perf_event *event,
1399 struct perf_sample *sample,
1400 struct thread *thread,
1401 struct addr_location *al)
1403 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1405 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al);
1407 thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
1410 al->cpu = sample->cpu;
1414 al->sym = map__find_symbol(al->map, al->addr, NULL);