1 #define _FILE_OFFSET_BITS 64
8 #include <linux/list.h>
9 #include <linux/kernel.h>
14 #include "trace-event.h"
19 static bool no_buildid_cache = false;
22 * Create new perf.data header attribute:
24 struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr)
26 struct perf_header_attr *self = malloc(sizeof(*self));
32 self->id = malloc(sizeof(u64));
33 if (self->id == NULL) {
42 void perf_header_attr__delete(struct perf_header_attr *self)
48 int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
53 if (self->ids > self->size) {
54 int nsize = self->size * 2;
55 u64 *nid = realloc(self->id, nsize * sizeof(u64));
67 int perf_header__init(struct perf_header *self)
70 self->attr = malloc(sizeof(void *));
71 return self->attr == NULL ? -ENOMEM : 0;
74 void perf_header__exit(struct perf_header *self)
77 for (i = 0; i < self->attrs; ++i)
78 perf_header_attr__delete(self->attr[i]);
82 int perf_header__add_attr(struct perf_header *self,
83 struct perf_header_attr *attr)
88 if (self->attrs == self->size) {
89 int nsize = self->size * 2;
90 struct perf_header_attr **nattr;
92 nattr = realloc(self->attr, nsize * sizeof(void *));
100 self->attr[self->attrs++] = attr;
104 static int event_count;
105 static struct perf_trace_event_type *events;
107 int perf_header__push_event(u64 id, const char *name)
109 if (strlen(name) > MAX_EVENT_NAME)
110 pr_warning("Event %s will be truncated\n", name);
113 events = malloc(sizeof(struct perf_trace_event_type));
117 struct perf_trace_event_type *nevents;
119 nevents = realloc(events, (event_count + 1) * sizeof(*events));
124 memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
125 events[event_count].event_id = id;
126 strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);
131 char *perf_header__find_event(u64 id)
134 for (i = 0 ; i < event_count; i++) {
135 if (events[i].event_id == id)
136 return events[i].name;
141 static const char *__perf_magic = "PERFFILE";
143 #define PERF_MAGIC (*(u64 *)__perf_magic)
145 struct perf_file_attr {
146 struct perf_event_attr attr;
147 struct perf_file_section ids;
150 void perf_header__set_feat(struct perf_header *self, int feat)
152 set_bit(feat, self->adds_features);
155 void perf_header__clear_feat(struct perf_header *self, int feat)
157 clear_bit(feat, self->adds_features);
160 bool perf_header__has_feat(const struct perf_header *self, int feat)
162 return test_bit(feat, self->adds_features);
165 static int do_write(int fd, const void *buf, size_t size)
168 int ret = write(fd, buf, size);
180 #define NAME_ALIGN 64
182 static int write_padded(int fd, const void *bf, size_t count,
183 size_t count_aligned)
185 static const char zero_buf[NAME_ALIGN];
186 int err = do_write(fd, bf, count);
189 err = do_write(fd, zero_buf, count_aligned - count);
194 #define dsos__for_each_with_build_id(pos, head) \
195 list_for_each_entry(pos, head, node) \
196 if (!pos->has_build_id) \
200 static int __dsos__write_buildid_table(struct list_head *head, pid_t pid,
205 dsos__for_each_with_build_id(pos, head) {
207 struct build_id_event b;
212 len = pos->long_name_len + 1;
213 len = ALIGN(len, NAME_ALIGN);
214 memset(&b, 0, sizeof(b));
215 memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
217 b.header.misc = misc;
218 b.header.size = sizeof(b) + len;
219 err = do_write(fd, &b, sizeof(b));
222 err = write_padded(fd, pos->long_name,
223 pos->long_name_len + 1, len);
231 static int machine__write_buildid_table(struct machine *self, int fd)
234 u16 kmisc = PERF_RECORD_MISC_KERNEL,
235 umisc = PERF_RECORD_MISC_USER;
237 if (!machine__is_host(self)) {
238 kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
239 umisc = PERF_RECORD_MISC_GUEST_USER;
242 err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid,
245 err = __dsos__write_buildid_table(&self->user_dsos,
246 self->pid, umisc, fd);
250 static int dsos__write_buildid_table(struct perf_header *header, int fd)
252 struct perf_session *session = container_of(header,
253 struct perf_session, header);
255 int err = machine__write_buildid_table(&session->host_machine, fd);
260 for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
261 struct machine *pos = rb_entry(nd, struct machine, rb_node);
262 err = machine__write_buildid_table(pos, fd);
269 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
270 const char *name, bool is_kallsyms)
272 const size_t size = PATH_MAX;
273 char *realname = realpath(name, NULL),
274 *filename = malloc(size),
275 *linkname = malloc(size), *targetname;
278 if (realname == NULL || filename == NULL || linkname == NULL)
281 len = snprintf(filename, size, "%s%s%s",
282 debugdir, is_kallsyms ? "/" : "", realname);
283 if (mkdir_p(filename, 0755))
286 snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id);
288 if (access(filename, F_OK)) {
290 if (copyfile("/proc/kallsyms", filename))
292 } else if (link(realname, filename) && copyfile(name, filename))
296 len = snprintf(linkname, size, "%s/.build-id/%.2s",
297 debugdir, sbuild_id);
299 if (access(linkname, X_OK) && mkdir_p(linkname, 0755))
302 snprintf(linkname + len, size - len, "/%s", sbuild_id + 2);
303 targetname = filename + strlen(debugdir) - 5;
304 memcpy(targetname, "../..", 5);
306 if (symlink(targetname, linkname) == 0)
315 static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
316 const char *name, const char *debugdir,
319 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
321 build_id__sprintf(build_id, build_id_size, sbuild_id);
323 return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms);
326 int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
328 const size_t size = PATH_MAX;
329 char *filename = malloc(size),
330 *linkname = malloc(size);
333 if (filename == NULL || linkname == NULL)
336 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
337 debugdir, sbuild_id, sbuild_id + 2);
339 if (access(linkname, F_OK))
342 if (readlink(linkname, filename, size) < 0)
345 if (unlink(linkname))
349 * Since the link is relative, we must make it absolute:
351 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
352 debugdir, sbuild_id, filename);
354 if (unlink(linkname))
364 static int dso__cache_build_id(struct dso *self, const char *debugdir)
366 bool is_kallsyms = self->kernel && self->long_name[0] != '/';
368 return build_id_cache__add_b(self->build_id, sizeof(self->build_id),
369 self->long_name, debugdir, is_kallsyms);
372 static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir)
377 dsos__for_each_with_build_id(pos, head)
378 if (dso__cache_build_id(pos, debugdir))
384 static int machine__cache_build_ids(struct machine *self, const char *debugdir)
386 int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir);
387 ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir);
391 static int perf_session__cache_build_ids(struct perf_session *self)
395 char debugdir[PATH_MAX];
397 snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
399 if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
402 ret = machine__cache_build_ids(&self->host_machine, debugdir);
404 for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
405 struct machine *pos = rb_entry(nd, struct machine, rb_node);
406 ret |= machine__cache_build_ids(pos, debugdir);
411 static bool machine__read_build_ids(struct machine *self, bool with_hits)
413 bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits);
414 ret |= __dsos__read_build_ids(&self->user_dsos, with_hits);
418 static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits)
421 bool ret = machine__read_build_ids(&self->host_machine, with_hits);
423 for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
424 struct machine *pos = rb_entry(nd, struct machine, rb_node);
425 ret |= machine__read_build_ids(pos, with_hits);
431 static int perf_header__adds_write(struct perf_header *self, int fd)
434 struct perf_session *session;
435 struct perf_file_section *feat_sec;
440 session = container_of(self, struct perf_session, header);
442 if (perf_header__has_feat(self, HEADER_BUILD_ID &&
443 !perf_session__read_build_ids(session, true)))
444 perf_header__clear_feat(self, HEADER_BUILD_ID);
446 nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
450 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
451 if (feat_sec == NULL)
454 sec_size = sizeof(*feat_sec) * nr_sections;
456 sec_start = self->data_offset + self->data_size;
457 lseek(fd, sec_start + sec_size, SEEK_SET);
459 if (perf_header__has_feat(self, HEADER_TRACE_INFO)) {
460 struct perf_file_section *trace_sec;
462 trace_sec = &feat_sec[idx++];
464 /* Write trace info */
465 trace_sec->offset = lseek(fd, 0, SEEK_CUR);
466 read_tracing_data(fd, &evsel_list);
467 trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
470 if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
471 struct perf_file_section *buildid_sec;
473 buildid_sec = &feat_sec[idx++];
475 /* Write build-ids */
476 buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
477 err = dsos__write_buildid_table(self, fd);
479 pr_debug("failed to write buildid table\n");
482 buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
484 if (!no_buildid_cache)
485 perf_session__cache_build_ids(session);
488 lseek(fd, sec_start, SEEK_SET);
489 err = do_write(fd, feat_sec, sec_size);
491 pr_debug("failed to write feature section\n");
497 int perf_header__write_pipe(int fd)
499 struct perf_pipe_file_header f_header;
502 f_header = (struct perf_pipe_file_header){
504 .size = sizeof(f_header),
507 err = do_write(fd, &f_header, sizeof(f_header));
509 pr_debug("failed to write perf pipe header\n");
516 int perf_header__write(struct perf_header *self, int fd, bool at_exit)
518 struct perf_file_header f_header;
519 struct perf_file_attr f_attr;
520 struct perf_header_attr *attr;
523 lseek(fd, sizeof(f_header), SEEK_SET);
525 for (i = 0; i < self->attrs; i++) {
526 attr = self->attr[i];
528 attr->id_offset = lseek(fd, 0, SEEK_CUR);
529 err = do_write(fd, attr->id, attr->ids * sizeof(u64));
531 pr_debug("failed to write perf header\n");
537 self->attr_offset = lseek(fd, 0, SEEK_CUR);
539 for (i = 0; i < self->attrs; i++) {
540 attr = self->attr[i];
542 f_attr = (struct perf_file_attr){
545 .offset = attr->id_offset,
546 .size = attr->ids * sizeof(u64),
549 err = do_write(fd, &f_attr, sizeof(f_attr));
551 pr_debug("failed to write perf header attribute\n");
556 self->event_offset = lseek(fd, 0, SEEK_CUR);
557 self->event_size = event_count * sizeof(struct perf_trace_event_type);
559 err = do_write(fd, events, self->event_size);
561 pr_debug("failed to write perf header events\n");
566 self->data_offset = lseek(fd, 0, SEEK_CUR);
569 err = perf_header__adds_write(self, fd);
574 f_header = (struct perf_file_header){
576 .size = sizeof(f_header),
577 .attr_size = sizeof(f_attr),
579 .offset = self->attr_offset,
580 .size = self->attrs * sizeof(f_attr),
583 .offset = self->data_offset,
584 .size = self->data_size,
587 .offset = self->event_offset,
588 .size = self->event_size,
592 memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features));
594 lseek(fd, 0, SEEK_SET);
595 err = do_write(fd, &f_header, sizeof(f_header));
597 pr_debug("failed to write perf header\n");
600 lseek(fd, self->data_offset + self->data_size, SEEK_SET);
606 static int perf_header__getbuffer64(struct perf_header *self,
607 int fd, void *buf, size_t size)
609 if (readn(fd, buf, size) <= 0)
612 if (self->needs_swap)
613 mem_bswap_64(buf, size);
618 int perf_header__process_sections(struct perf_header *self, int fd,
619 int (*process)(struct perf_file_section *self,
620 struct perf_header *ph,
623 struct perf_file_section *feat_sec;
627 int err = -1, feat = 1;
629 nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
633 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
637 sec_size = sizeof(*feat_sec) * nr_sections;
639 lseek(fd, self->data_offset + self->data_size, SEEK_SET);
641 if (perf_header__getbuffer64(self, fd, feat_sec, sec_size))
645 while (idx < nr_sections && feat < HEADER_LAST_FEATURE) {
646 if (perf_header__has_feat(self, feat)) {
647 struct perf_file_section *sec = &feat_sec[idx++];
649 err = process(sec, self, feat, fd);
660 int perf_file_header__read(struct perf_file_header *self,
661 struct perf_header *ph, int fd)
663 lseek(fd, 0, SEEK_SET);
665 if (readn(fd, self, sizeof(*self)) <= 0 ||
666 memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
669 if (self->attr_size != sizeof(struct perf_file_attr)) {
670 u64 attr_size = bswap_64(self->attr_size);
672 if (attr_size != sizeof(struct perf_file_attr))
675 mem_bswap_64(self, offsetof(struct perf_file_header,
677 ph->needs_swap = true;
680 if (self->size != sizeof(*self)) {
681 /* Support the previous format */
682 if (self->size == offsetof(typeof(*self), adds_features))
683 bitmap_zero(self->adds_features, HEADER_FEAT_BITS);
688 memcpy(&ph->adds_features, &self->adds_features,
689 sizeof(ph->adds_features));
691 * FIXME: hack that assumes that if we need swap the perf.data file
692 * may be coming from an arch with a different word-size, ergo different
693 * DEFINE_BITMAP format, investigate more later, but for now its mostly
694 * safe to assume that we have a build-id section. Trace files probably
695 * have several other issues in this realm anyway...
697 if (ph->needs_swap) {
698 memset(&ph->adds_features, 0, sizeof(ph->adds_features));
699 perf_header__set_feat(ph, HEADER_BUILD_ID);
702 ph->event_offset = self->event_types.offset;
703 ph->event_size = self->event_types.size;
704 ph->data_offset = self->data.offset;
705 ph->data_size = self->data.size;
709 static int __event_process_build_id(struct build_id_event *bev,
711 struct perf_session *session)
714 struct list_head *head;
715 struct machine *machine;
718 enum dso_kernel_type dso_type;
720 machine = perf_session__findnew_machine(session, bev->pid);
724 misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
727 case PERF_RECORD_MISC_KERNEL:
728 dso_type = DSO_TYPE_KERNEL;
729 head = &machine->kernel_dsos;
731 case PERF_RECORD_MISC_GUEST_KERNEL:
732 dso_type = DSO_TYPE_GUEST_KERNEL;
733 head = &machine->kernel_dsos;
735 case PERF_RECORD_MISC_USER:
736 case PERF_RECORD_MISC_GUEST_USER:
737 dso_type = DSO_TYPE_USER;
738 head = &machine->user_dsos;
744 dso = __dsos__findnew(head, filename);
746 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
748 dso__set_build_id(dso, &bev->build_id);
750 if (filename[0] == '[')
751 dso->kernel = dso_type;
753 build_id__sprintf(dso->build_id, sizeof(dso->build_id),
755 pr_debug("build id event received for %s: %s\n",
756 dso->long_name, sbuild_id);
764 static int perf_header__read_build_ids(struct perf_header *self,
765 int input, u64 offset, u64 size)
767 struct perf_session *session = container_of(self,
768 struct perf_session, header);
769 struct build_id_event bev;
770 char filename[PATH_MAX];
771 u64 limit = offset + size;
774 while (offset < limit) {
777 if (read(input, &bev, sizeof(bev)) != sizeof(bev))
780 if (self->needs_swap)
781 perf_event_header__bswap(&bev.header);
783 len = bev.header.size - sizeof(bev);
784 if (read(input, filename, len) != len)
787 __event_process_build_id(&bev, filename, session);
789 offset += bev.header.size;
796 static int perf_file_section__process(struct perf_file_section *self,
797 struct perf_header *ph,
800 if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) {
801 pr_debug("Failed to lseek to %Ld offset for feature %d, "
802 "continuing...\n", self->offset, feat);
807 case HEADER_TRACE_INFO:
808 trace_report(fd, false);
811 case HEADER_BUILD_ID:
812 if (perf_header__read_build_ids(ph, fd, self->offset, self->size))
813 pr_debug("Failed to read buildids, continuing...\n");
816 pr_debug("unknown feature %d, continuing...\n", feat);
822 static int perf_file_header__read_pipe(struct perf_pipe_file_header *self,
823 struct perf_header *ph, int fd,
826 if (readn(fd, self, sizeof(*self)) <= 0 ||
827 memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
830 if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0)
833 if (self->size != sizeof(*self)) {
834 u64 size = bswap_64(self->size);
836 if (size != sizeof(*self))
839 ph->needs_swap = true;
845 static int perf_header__read_pipe(struct perf_session *session, int fd)
847 struct perf_header *self = &session->header;
848 struct perf_pipe_file_header f_header;
850 if (perf_file_header__read_pipe(&f_header, self, fd,
851 session->repipe) < 0) {
852 pr_debug("incompatible file format\n");
861 int perf_header__read(struct perf_session *session, int fd)
863 struct perf_header *self = &session->header;
864 struct perf_file_header f_header;
865 struct perf_file_attr f_attr;
867 int nr_attrs, nr_ids, i, j;
869 if (session->fd_pipe)
870 return perf_header__read_pipe(session, fd);
872 if (perf_file_header__read(&f_header, self, fd) < 0) {
873 pr_debug("incompatible file format\n");
877 nr_attrs = f_header.attrs.size / sizeof(f_attr);
878 lseek(fd, f_header.attrs.offset, SEEK_SET);
880 for (i = 0; i < nr_attrs; i++) {
881 struct perf_header_attr *attr;
884 if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr)))
887 tmp = lseek(fd, 0, SEEK_CUR);
889 attr = perf_header_attr__new(&f_attr.attr);
893 nr_ids = f_attr.ids.size / sizeof(u64);
894 lseek(fd, f_attr.ids.offset, SEEK_SET);
896 for (j = 0; j < nr_ids; j++) {
897 if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id)))
900 if (perf_header_attr__add_id(attr, f_id) < 0) {
901 perf_header_attr__delete(attr);
905 if (perf_header__add_attr(self, attr) < 0) {
906 perf_header_attr__delete(attr);
910 lseek(fd, tmp, SEEK_SET);
913 if (f_header.event_types.size) {
914 lseek(fd, f_header.event_types.offset, SEEK_SET);
915 events = malloc(f_header.event_types.size);
918 if (perf_header__getbuffer64(self, fd, events,
919 f_header.event_types.size))
921 event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type);
924 perf_header__process_sections(self, fd, perf_file_section__process);
926 lseek(fd, self->data_offset, SEEK_SET);
934 u64 perf_header__sample_type(struct perf_header *header)
939 for (i = 0; i < header->attrs; i++) {
940 struct perf_header_attr *attr = header->attr[i];
943 type = attr->attr.sample_type;
944 else if (type != attr->attr.sample_type)
945 die("non matching sample_type");
951 bool perf_header__sample_id_all(const struct perf_header *header)
953 bool value = false, first = true;
956 for (i = 0; i < header->attrs; i++) {
957 struct perf_header_attr *attr = header->attr[i];
960 value = attr->attr.sample_id_all;
962 } else if (value != attr->attr.sample_id_all)
963 die("non matching sample_id_all");
969 struct perf_event_attr *
970 perf_header__find_attr(u64 id, struct perf_header *header)
975 * We set id to -1 if the data file doesn't contain sample
976 * ids. This can happen when the data file contains one type
977 * of event and in that case, the header can still store the
978 * event attribute information. Check for this and avoid
979 * walking through the entire list of ids which may be large.
982 if (header->attrs > 0)
983 return &header->attr[0]->attr;
987 for (i = 0; i < header->attrs; i++) {
988 struct perf_header_attr *attr = header->attr[i];
991 for (j = 0; j < attr->ids; j++) {
992 if (attr->id[j] == id)
1000 int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
1001 event__handler_t process,
1002 struct perf_session *session)
1008 size = sizeof(struct perf_event_attr);
1009 size = ALIGN(size, sizeof(u64));
1010 size += sizeof(struct perf_event_header);
1011 size += ids * sizeof(u64);
1018 ev->attr.attr = *attr;
1019 memcpy(ev->attr.id, id, ids * sizeof(u64));
1021 ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
1022 ev->attr.header.size = size;
1024 err = process(ev, NULL, session);
1031 int event__synthesize_attrs(struct perf_header *self, event__handler_t process,
1032 struct perf_session *session)
1034 struct perf_header_attr *attr;
1037 for (i = 0; i < self->attrs; i++) {
1038 attr = self->attr[i];
1040 err = event__synthesize_attr(&attr->attr, attr->ids, attr->id,
1043 pr_debug("failed to create perf header attribute\n");
1051 int event__process_attr(event_t *self, struct perf_session *session)
1053 struct perf_header_attr *attr;
1054 unsigned int i, ids, n_ids;
1056 attr = perf_header_attr__new(&self->attr.attr);
1060 ids = self->header.size;
1061 ids -= (void *)&self->attr.id - (void *)self;
1062 n_ids = ids / sizeof(u64);
1064 for (i = 0; i < n_ids; i++) {
1065 if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) {
1066 perf_header_attr__delete(attr);
1071 if (perf_header__add_attr(&session->header, attr) < 0) {
1072 perf_header_attr__delete(attr);
1076 perf_session__update_sample_type(session);
1081 int event__synthesize_event_type(u64 event_id, char *name,
1082 event__handler_t process,
1083 struct perf_session *session)
1089 memset(&ev, 0, sizeof(ev));
1091 ev.event_type.event_type.event_id = event_id;
1092 memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME);
1093 strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
1095 ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
1096 size = strlen(name);
1097 size = ALIGN(size, sizeof(u64));
1098 ev.event_type.header.size = sizeof(ev.event_type) -
1099 (sizeof(ev.event_type.event_type.name) - size);
1101 err = process(&ev, NULL, session);
1106 int event__synthesize_event_types(event__handler_t process,
1107 struct perf_session *session)
1109 struct perf_trace_event_type *type;
1112 for (i = 0; i < event_count; i++) {
1115 err = event__synthesize_event_type(type->event_id, type->name,
1118 pr_debug("failed to create perf header event type\n");
1126 int event__process_event_type(event_t *self,
1127 struct perf_session *session __unused)
1129 if (perf_header__push_event(self->event_type.event_type.event_id,
1130 self->event_type.event_type.name) < 0)
1136 int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
1137 event__handler_t process,
1138 struct perf_session *session __unused)
1141 ssize_t size = 0, aligned_size = 0, padding;
1144 memset(&ev, 0, sizeof(ev));
1146 ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
1147 size = read_tracing_data_size(fd, pattrs);
1150 aligned_size = ALIGN(size, sizeof(u64));
1151 padding = aligned_size - size;
1152 ev.tracing_data.header.size = sizeof(ev.tracing_data);
1153 ev.tracing_data.size = aligned_size;
1155 process(&ev, NULL, session);
1157 err = read_tracing_data(fd, pattrs);
1158 write_padded(fd, NULL, 0, padding);
1160 return aligned_size;
1163 int event__process_tracing_data(event_t *self,
1164 struct perf_session *session)
1166 ssize_t size_read, padding, size = self->tracing_data.size;
1167 off_t offset = lseek(session->fd, 0, SEEK_CUR);
1170 /* setup for reading amidst mmap */
1171 lseek(session->fd, offset + sizeof(struct tracing_data_event),
1174 size_read = trace_report(session->fd, session->repipe);
1176 padding = ALIGN(size_read, sizeof(u64)) - size_read;
1178 if (read(session->fd, buf, padding) < 0)
1179 die("reading input file");
1180 if (session->repipe) {
1181 int retw = write(STDOUT_FILENO, buf, padding);
1182 if (retw <= 0 || retw != padding)
1183 die("repiping tracing data padding");
1186 if (size_read + padding != size)
1187 die("tracing data size mismatch");
1189 return size_read + padding;
1192 int event__synthesize_build_id(struct dso *pos, u16 misc,
1193 event__handler_t process,
1194 struct machine *machine,
1195 struct perf_session *session)
1204 memset(&ev, 0, sizeof(ev));
1206 len = pos->long_name_len + 1;
1207 len = ALIGN(len, NAME_ALIGN);
1208 memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
1209 ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
1210 ev.build_id.header.misc = misc;
1211 ev.build_id.pid = machine->pid;
1212 ev.build_id.header.size = sizeof(ev.build_id) + len;
1213 memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
1215 err = process(&ev, NULL, session);
1220 int event__process_build_id(event_t *self,
1221 struct perf_session *session)
1223 __event_process_build_id(&self->build_id,
1224 self->build_id.filename,
1229 void disable_buildid_cache(void)
1231 no_buildid_cache = true;