1 #include <linux/types.h>
11 #include "thread_map.h"
12 #include "symbol/kallsyms.h"
14 static const char *perf_event__names[] = {
16 [PERF_RECORD_MMAP] = "MMAP",
17 [PERF_RECORD_MMAP2] = "MMAP2",
18 [PERF_RECORD_LOST] = "LOST",
19 [PERF_RECORD_COMM] = "COMM",
20 [PERF_RECORD_EXIT] = "EXIT",
21 [PERF_RECORD_THROTTLE] = "THROTTLE",
22 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
23 [PERF_RECORD_FORK] = "FORK",
24 [PERF_RECORD_READ] = "READ",
25 [PERF_RECORD_SAMPLE] = "SAMPLE",
26 [PERF_RECORD_AUX] = "AUX",
27 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
28 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
29 [PERF_RECORD_HEADER_ATTR] = "ATTR",
30 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
31 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
32 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
33 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
34 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
35 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
36 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
37 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
40 const char *perf_event__name(unsigned int id)
42 if (id >= ARRAY_SIZE(perf_event__names))
44 if (!perf_event__names[id])
46 return perf_event__names[id];
49 static struct perf_sample synth_sample = {
59 * Assumes that the first 4095 bytes of /proc/pid/stat contains
60 * the comm, tgid and ppid.
62 static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
63 pid_t *tgid, pid_t *ppid)
65 char filename[PATH_MAX];
69 char *nl, *name, *tgids, *ppids;
74 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
76 fd = open(filename, O_RDONLY);
78 pr_debug("couldn't open %s\n", filename);
82 n = read(fd, bf, sizeof(bf) - 1);
85 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
91 name = strstr(bf, "Name:");
92 tgids = strstr(bf, "Tgid:");
93 ppids = strstr(bf, "PPid:");
96 name += 5; /* strlen("Name:") */
98 while (*name && isspace(*name))
101 nl = strchr(name, '\n');
108 memcpy(comm, name, size);
111 pr_debug("Name: string not found for pid %d\n", pid);
115 tgids += 5; /* strlen("Tgid:") */
118 pr_debug("Tgid: string not found for pid %d\n", pid);
122 ppids += 5; /* strlen("PPid:") */
125 pr_debug("PPid: string not found for pid %d\n", pid);
131 static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
132 struct machine *machine,
133 pid_t *tgid, pid_t *ppid)
139 memset(&event->comm, 0, sizeof(event->comm));
141 if (machine__is_host(machine)) {
142 if (perf_event__get_comm_ids(pid, event->comm.comm,
143 sizeof(event->comm.comm),
148 *tgid = machine->pid;
154 event->comm.pid = *tgid;
155 event->comm.header.type = PERF_RECORD_COMM;
157 size = strlen(event->comm.comm) + 1;
158 size = PERF_ALIGN(size, sizeof(u64));
159 memset(event->comm.comm + size, 0, machine->id_hdr_size);
160 event->comm.header.size = (sizeof(event->comm) -
161 (sizeof(event->comm.comm) - size) +
162 machine->id_hdr_size);
163 event->comm.tid = pid;
168 static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
169 union perf_event *event, pid_t pid,
170 perf_event__handler_t process,
171 struct machine *machine)
175 if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
178 if (process(tool, event, &synth_sample, machine) != 0)
184 static int perf_event__synthesize_fork(struct perf_tool *tool,
185 union perf_event *event,
186 pid_t pid, pid_t tgid, pid_t ppid,
187 perf_event__handler_t process,
188 struct machine *machine)
190 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
193 * for main thread set parent to ppid from status file. For other
194 * threads set parent pid to main thread. ie., assume main thread
195 * spawns all threads in a process
198 event->fork.ppid = ppid;
199 event->fork.ptid = ppid;
201 event->fork.ppid = tgid;
202 event->fork.ptid = tgid;
204 event->fork.pid = tgid;
205 event->fork.tid = pid;
206 event->fork.header.type = PERF_RECORD_FORK;
208 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
210 if (process(tool, event, &synth_sample, machine) != 0)
216 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
217 union perf_event *event,
218 pid_t pid, pid_t tgid,
219 perf_event__handler_t process,
220 struct machine *machine,
222 unsigned int proc_map_timeout)
224 char filename[PATH_MAX];
226 unsigned long long t;
227 bool truncation = false;
228 unsigned long long timeout = proc_map_timeout * 1000000ULL;
231 if (machine__is_default_guest(machine))
234 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
235 machine->root_dir, pid);
237 fp = fopen(filename, "r");
240 * We raced with a task exiting - just return:
242 pr_debug("couldn't open %s\n", filename);
246 event->header.type = PERF_RECORD_MMAP2;
252 char execname[PATH_MAX];
253 char anonstr[] = "//anon";
258 if (fgets(bf, sizeof(bf), fp) == NULL)
261 if ((rdclock() - t) > timeout) {
262 pr_warning("Reading %s time out. "
263 "You may want to increase "
264 "the time limit by --proc-map-timeout\n",
270 /* ensure null termination since stack will be reused. */
271 strcpy(execname, "");
273 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
274 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
275 &event->mmap2.start, &event->mmap2.len, prot,
276 &event->mmap2.pgoff, &event->mmap2.maj,
281 * Anon maps don't have the execname.
286 event->mmap2.ino = (u64)ino;
289 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
291 if (machine__is_host(machine))
292 event->header.misc = PERF_RECORD_MISC_USER;
294 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
296 /* map protection and flags bits */
297 event->mmap2.prot = 0;
298 event->mmap2.flags = 0;
300 event->mmap2.prot |= PROT_READ;
302 event->mmap2.prot |= PROT_WRITE;
304 event->mmap2.prot |= PROT_EXEC;
307 event->mmap2.flags |= MAP_SHARED;
309 event->mmap2.flags |= MAP_PRIVATE;
311 if (prot[2] != 'x') {
312 if (!mmap_data || prot[0] != 'r')
315 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
320 event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
322 if (!strcmp(execname, ""))
323 strcpy(execname, anonstr);
325 size = strlen(execname) + 1;
326 memcpy(event->mmap2.filename, execname, size);
327 size = PERF_ALIGN(size, sizeof(u64));
328 event->mmap2.len -= event->mmap.start;
329 event->mmap2.header.size = (sizeof(event->mmap2) -
330 (sizeof(event->mmap2.filename) - size));
331 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
332 event->mmap2.header.size += machine->id_hdr_size;
333 event->mmap2.pid = tgid;
334 event->mmap2.tid = pid;
336 if (process(tool, event, &synth_sample, machine) != 0) {
349 int perf_event__synthesize_modules(struct perf_tool *tool,
350 perf_event__handler_t process,
351 struct machine *machine)
355 struct map_groups *kmaps = &machine->kmaps;
356 struct maps *maps = &kmaps->maps[MAP__FUNCTION];
357 union perf_event *event = zalloc((sizeof(event->mmap) +
358 machine->id_hdr_size));
360 pr_debug("Not enough memory synthesizing mmap event "
361 "for kernel modules\n");
365 event->header.type = PERF_RECORD_MMAP;
368 * kernel uses 0 for user space maps, see kernel/perf_event.c
371 if (machine__is_host(machine))
372 event->header.misc = PERF_RECORD_MISC_KERNEL;
374 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
376 for (pos = maps__first(maps); pos; pos = map__next(pos)) {
379 if (pos->dso->kernel)
382 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
383 event->mmap.header.type = PERF_RECORD_MMAP;
384 event->mmap.header.size = (sizeof(event->mmap) -
385 (sizeof(event->mmap.filename) - size));
386 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
387 event->mmap.header.size += machine->id_hdr_size;
388 event->mmap.start = pos->start;
389 event->mmap.len = pos->end - pos->start;
390 event->mmap.pid = machine->pid;
392 memcpy(event->mmap.filename, pos->dso->long_name,
393 pos->dso->long_name_len + 1);
394 if (process(tool, event, &synth_sample, machine) != 0) {
404 static int __event__synthesize_thread(union perf_event *comm_event,
405 union perf_event *mmap_event,
406 union perf_event *fork_event,
408 perf_event__handler_t process,
409 struct perf_tool *tool,
410 struct machine *machine,
412 unsigned int proc_map_timeout)
414 char filename[PATH_MAX];
416 struct dirent dirent, *next;
420 /* special case: only send one comm event using passed in pid */
422 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
428 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
429 process, machine, mmap_data,
433 if (machine__is_default_guest(machine))
436 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
437 machine->root_dir, pid);
439 tasks = opendir(filename);
441 pr_debug("couldn't open %s\n", filename);
445 while (!readdir_r(tasks, &dirent, &next) && next) {
449 _pid = strtol(dirent.d_name, &end, 10);
454 if (perf_event__prepare_comm(comm_event, _pid, machine,
458 if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
459 ppid, process, machine) < 0)
462 * Send the prepared comm event
464 if (process(tool, comm_event, &synth_sample, machine) != 0)
469 /* process the parent's maps too */
470 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
471 process, machine, mmap_data, proc_map_timeout);
481 int perf_event__synthesize_thread_map(struct perf_tool *tool,
482 struct thread_map *threads,
483 perf_event__handler_t process,
484 struct machine *machine,
486 unsigned int proc_map_timeout)
488 union perf_event *comm_event, *mmap_event, *fork_event;
489 int err = -1, thread, j;
491 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
492 if (comm_event == NULL)
495 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
496 if (mmap_event == NULL)
499 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
500 if (fork_event == NULL)
504 for (thread = 0; thread < threads->nr; ++thread) {
505 if (__event__synthesize_thread(comm_event, mmap_event,
507 threads->map[thread], 0,
508 process, tool, machine,
509 mmap_data, proc_map_timeout)) {
515 * comm.pid is set to thread group id by
516 * perf_event__synthesize_comm
518 if ((int) comm_event->comm.pid != threads->map[thread]) {
519 bool need_leader = true;
521 /* is thread group leader in thread_map? */
522 for (j = 0; j < threads->nr; ++j) {
523 if ((int) comm_event->comm.pid == threads->map[j]) {
529 /* if not, generate events for it */
531 __event__synthesize_thread(comm_event, mmap_event,
533 comm_event->comm.pid, 0,
534 process, tool, machine,
535 mmap_data, proc_map_timeout)) {
550 int perf_event__synthesize_threads(struct perf_tool *tool,
551 perf_event__handler_t process,
552 struct machine *machine,
554 unsigned int proc_map_timeout)
557 char proc_path[PATH_MAX];
558 struct dirent dirent, *next;
559 union perf_event *comm_event, *mmap_event, *fork_event;
562 if (machine__is_default_guest(machine))
565 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
566 if (comm_event == NULL)
569 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
570 if (mmap_event == NULL)
573 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
574 if (fork_event == NULL)
577 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
578 proc = opendir(proc_path);
583 while (!readdir_r(proc, &dirent, &next) && next) {
585 pid_t pid = strtol(dirent.d_name, &end, 10);
587 if (*end) /* only interested in proper numerical dirents */
590 * We may race with exiting thread, so don't stop just because
591 * one thread couldn't be synthesized.
593 __event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
594 1, process, tool, machine, mmap_data,
610 struct process_symbol_args {
615 static int find_symbol_cb(void *arg, const char *name, char type,
618 struct process_symbol_args *args = arg;
621 * Must be a function or at least an alias, as in PARISC64, where "_text" is
622 * an 'A' to the same address as "_stext".
624 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
625 type == 'A') || strcmp(name, args->name))
632 u64 kallsyms__get_function_start(const char *kallsyms_filename,
633 const char *symbol_name)
635 struct process_symbol_args args = { .name = symbol_name, };
637 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
643 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
644 perf_event__handler_t process,
645 struct machine *machine)
648 const char *mmap_name;
649 char name_buff[PATH_MAX];
653 union perf_event *event;
655 if (machine->vmlinux_maps[0] == NULL)
659 * We should get this from /sys/kernel/sections/.text, but till that is
660 * available use this, and after it is use this as a fallback for older
663 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
665 pr_debug("Not enough memory synthesizing mmap event "
666 "for kernel modules\n");
670 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
671 if (machine__is_host(machine)) {
673 * kernel uses PERF_RECORD_MISC_USER for user space maps,
674 * see kernel/perf_event.c __perf_event_mmap
676 event->header.misc = PERF_RECORD_MISC_KERNEL;
678 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
681 map = machine->vmlinux_maps[MAP__FUNCTION];
682 kmap = map__kmap(map);
683 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
684 "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
685 size = PERF_ALIGN(size, sizeof(u64));
686 event->mmap.header.type = PERF_RECORD_MMAP;
687 event->mmap.header.size = (sizeof(event->mmap) -
688 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
689 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
690 event->mmap.start = map->start;
691 event->mmap.len = map->end - event->mmap.start;
692 event->mmap.pid = machine->pid;
694 err = process(tool, event, &synth_sample, machine);
700 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
704 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
709 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
712 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
713 union perf_event *event,
714 struct perf_sample *sample,
715 struct machine *machine)
717 return machine__process_comm_event(machine, event, sample);
720 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
721 union perf_event *event,
722 struct perf_sample *sample,
723 struct machine *machine)
725 return machine__process_lost_event(machine, event, sample);
728 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
729 union perf_event *event,
730 struct perf_sample *sample __maybe_unused,
731 struct machine *machine)
733 return machine__process_aux_event(machine, event);
736 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
737 union perf_event *event,
738 struct perf_sample *sample __maybe_unused,
739 struct machine *machine)
741 return machine__process_itrace_start_event(machine, event);
744 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
745 union perf_event *event,
746 struct perf_sample *sample,
747 struct machine *machine)
749 return machine__process_lost_samples_event(machine, event, sample);
752 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
754 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
755 event->mmap.pid, event->mmap.tid, event->mmap.start,
756 event->mmap.len, event->mmap.pgoff,
757 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
758 event->mmap.filename);
761 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
763 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
764 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
765 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
766 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
767 event->mmap2.min, event->mmap2.ino,
768 event->mmap2.ino_generation,
769 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
770 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
771 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
772 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
773 event->mmap2.filename);
776 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
777 union perf_event *event,
778 struct perf_sample *sample,
779 struct machine *machine)
781 return machine__process_mmap_event(machine, event, sample);
784 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
785 union perf_event *event,
786 struct perf_sample *sample,
787 struct machine *machine)
789 return machine__process_mmap2_event(machine, event, sample);
792 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
794 return fprintf(fp, "(%d:%d):(%d:%d)\n",
795 event->fork.pid, event->fork.tid,
796 event->fork.ppid, event->fork.ptid);
799 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
800 union perf_event *event,
801 struct perf_sample *sample,
802 struct machine *machine)
804 return machine__process_fork_event(machine, event, sample);
807 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
808 union perf_event *event,
809 struct perf_sample *sample,
810 struct machine *machine)
812 return machine__process_exit_event(machine, event, sample);
815 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
817 return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n",
818 event->aux.aux_offset, event->aux.aux_size,
820 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
821 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "");
824 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
826 return fprintf(fp, " pid: %u tid: %u\n",
827 event->itrace_start.pid, event->itrace_start.tid);
830 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
832 size_t ret = fprintf(fp, "PERF_RECORD_%s",
833 perf_event__name(event->header.type));
835 switch (event->header.type) {
836 case PERF_RECORD_COMM:
837 ret += perf_event__fprintf_comm(event, fp);
839 case PERF_RECORD_FORK:
840 case PERF_RECORD_EXIT:
841 ret += perf_event__fprintf_task(event, fp);
843 case PERF_RECORD_MMAP:
844 ret += perf_event__fprintf_mmap(event, fp);
846 case PERF_RECORD_MMAP2:
847 ret += perf_event__fprintf_mmap2(event, fp);
849 case PERF_RECORD_AUX:
850 ret += perf_event__fprintf_aux(event, fp);
852 case PERF_RECORD_ITRACE_START:
853 ret += perf_event__fprintf_itrace_start(event, fp);
856 ret += fprintf(fp, "\n");
862 int perf_event__process(struct perf_tool *tool __maybe_unused,
863 union perf_event *event,
864 struct perf_sample *sample,
865 struct machine *machine)
867 return machine__process_event(machine, event, sample);
870 void thread__find_addr_map(struct thread *thread, u8 cpumode,
871 enum map_type type, u64 addr,
872 struct addr_location *al)
874 struct map_groups *mg = thread->mg;
875 struct machine *machine = mg->machine;
876 bool load_map = false;
878 al->machine = machine;
881 al->cpumode = cpumode;
884 if (machine == NULL) {
889 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
891 mg = &machine->kmaps;
893 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
895 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
897 mg = &machine->kmaps;
899 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
905 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
906 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
908 al->filtered |= (1 << HIST_FILTER__GUEST);
909 if ((cpumode == PERF_RECORD_MISC_USER ||
910 cpumode == PERF_RECORD_MISC_KERNEL) &&
912 al->filtered |= (1 << HIST_FILTER__HOST);
917 al->map = map_groups__find(mg, type, al->addr);
918 if (al->map == NULL) {
920 * If this is outside of all known maps, and is a negative
921 * address, try to look it up in the kernel dso, as it might be
922 * a vsyscall or vdso (which executes in user-mode).
924 * XXX This is nasty, we should have a symbol list in the
925 * "[vdso]" dso, but for now lets use the old trick of looking
926 * in the whole kernel symbol list.
928 if (cpumode == PERF_RECORD_MISC_USER && machine &&
929 mg != &machine->kmaps &&
930 machine__kernel_ip(machine, al->addr)) {
931 mg = &machine->kmaps;
937 * Kernel maps might be changed when loading symbols so loading
938 * must be done prior to using kernel maps.
941 map__load(al->map, machine->symbol_filter);
942 al->addr = al->map->map_ip(al->map, al->addr);
946 void thread__find_addr_location(struct thread *thread,
947 u8 cpumode, enum map_type type, u64 addr,
948 struct addr_location *al)
950 thread__find_addr_map(thread, cpumode, type, addr, al);
952 al->sym = map__find_symbol(al->map, al->addr,
953 thread->mg->machine->symbol_filter);
959 * Callers need to drop the reference to al->thread, obtained in
960 * machine__findnew_thread()
962 int perf_event__preprocess_sample(const union perf_event *event,
963 struct machine *machine,
964 struct addr_location *al,
965 struct perf_sample *sample)
967 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
968 struct thread *thread = machine__findnew_thread(machine, sample->pid,
974 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
976 * Have we already created the kernel maps for this machine?
978 * This should have happened earlier, when we processed the kernel MMAP
979 * events, but for older perf.data files there was no such thing, so do
982 if (cpumode == PERF_RECORD_MISC_KERNEL &&
983 machine->vmlinux_maps[MAP__FUNCTION] == NULL)
984 machine__create_kernel_maps(machine);
986 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al);
987 dump_printf(" ...... dso: %s\n",
988 al->map ? al->map->dso->long_name :
989 al->level == 'H' ? "[hypervisor]" : "<not found>");
991 if (thread__is_filtered(thread))
992 al->filtered |= (1 << HIST_FILTER__THREAD);
995 al->cpu = sample->cpu;
998 struct dso *dso = al->map->dso;
1000 if (symbol_conf.dso_list &&
1001 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
1003 (dso->short_name != dso->long_name &&
1004 strlist__has_entry(symbol_conf.dso_list,
1005 dso->long_name))))) {
1006 al->filtered |= (1 << HIST_FILTER__DSO);
1009 al->sym = map__find_symbol(al->map, al->addr,
1010 machine->symbol_filter);
1013 if (symbol_conf.sym_list &&
1014 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
1016 al->filtered |= (1 << HIST_FILTER__SYMBOL);
1023 * The preprocess_sample method will return with reference counts for the
1024 * in it, when done using (and perhaps getting ref counts if needing to
1025 * keep a pointer to one of those entries) it must be paired with
1026 * addr_location__put(), so that the refcounts can be decremented.
1028 void addr_location__put(struct addr_location *al)
1030 thread__zput(al->thread);
1033 bool is_bts_event(struct perf_event_attr *attr)
1035 return attr->type == PERF_TYPE_HARDWARE &&
1036 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
1037 attr->sample_period == 1;
1040 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
1042 if (attr->type == PERF_TYPE_SOFTWARE &&
1043 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
1044 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
1045 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
1048 if (is_bts_event(attr))
1054 void perf_event__preprocess_sample_addr(union perf_event *event,
1055 struct perf_sample *sample,
1056 struct thread *thread,
1057 struct addr_location *al)
1059 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1061 thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al);
1063 thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
1066 al->cpu = sample->cpu;
1070 al->sym = map__find_symbol(al->map, al->addr, NULL);