1 #define _FILE_OFFSET_BITS 64
8 #include <linux/list.h>
9 #include <linux/kernel.h>
15 #include "trace-event.h"
20 static bool no_buildid_cache = false;
23 * Create new perf.data header attribute:
25 struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr)
27 struct perf_header_attr *self = malloc(sizeof(*self));
33 self->id = malloc(sizeof(u64));
34 if (self->id == NULL) {
43 void perf_header_attr__delete(struct perf_header_attr *self)
49 int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
54 if (self->ids > self->size) {
55 int nsize = self->size * 2;
56 u64 *nid = realloc(self->id, nsize * sizeof(u64));
68 int perf_header__init(struct perf_header *self)
71 self->attr = malloc(sizeof(void *));
72 return self->attr == NULL ? -ENOMEM : 0;
75 void perf_header__exit(struct perf_header *self)
78 for (i = 0; i < self->attrs; ++i)
79 perf_header_attr__delete(self->attr[i]);
83 int perf_header__add_attr(struct perf_header *self,
84 struct perf_header_attr *attr)
89 if (self->attrs == self->size) {
90 int nsize = self->size * 2;
91 struct perf_header_attr **nattr;
93 nattr = realloc(self->attr, nsize * sizeof(void *));
101 self->attr[self->attrs++] = attr;
105 static int event_count;
106 static struct perf_trace_event_type *events;
108 int perf_header__push_event(u64 id, const char *name)
110 if (strlen(name) > MAX_EVENT_NAME)
111 pr_warning("Event %s will be truncated\n", name);
114 events = malloc(sizeof(struct perf_trace_event_type));
118 struct perf_trace_event_type *nevents;
120 nevents = realloc(events, (event_count + 1) * sizeof(*events));
125 memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
126 events[event_count].event_id = id;
127 strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);
132 char *perf_header__find_event(u64 id)
135 for (i = 0 ; i < event_count; i++) {
136 if (events[i].event_id == id)
137 return events[i].name;
142 static const char *__perf_magic = "PERFFILE";
144 #define PERF_MAGIC (*(u64 *)__perf_magic)
146 struct perf_file_attr {
147 struct perf_event_attr attr;
148 struct perf_file_section ids;
151 void perf_header__set_feat(struct perf_header *self, int feat)
153 set_bit(feat, self->adds_features);
156 void perf_header__clear_feat(struct perf_header *self, int feat)
158 clear_bit(feat, self->adds_features);
161 bool perf_header__has_feat(const struct perf_header *self, int feat)
163 return test_bit(feat, self->adds_features);
166 static int do_write(int fd, const void *buf, size_t size)
169 int ret = write(fd, buf, size);
181 #define NAME_ALIGN 64
183 static int write_padded(int fd, const void *bf, size_t count,
184 size_t count_aligned)
186 static const char zero_buf[NAME_ALIGN];
187 int err = do_write(fd, bf, count);
190 err = do_write(fd, zero_buf, count_aligned - count);
195 #define dsos__for_each_with_build_id(pos, head) \
196 list_for_each_entry(pos, head, node) \
197 if (!pos->has_build_id) \
201 static int __dsos__write_buildid_table(struct list_head *head, pid_t pid,
206 dsos__for_each_with_build_id(pos, head) {
208 struct build_id_event b;
213 len = pos->long_name_len + 1;
214 len = ALIGN(len, NAME_ALIGN);
215 memset(&b, 0, sizeof(b));
216 memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
218 b.header.misc = misc;
219 b.header.size = sizeof(b) + len;
220 err = do_write(fd, &b, sizeof(b));
223 err = write_padded(fd, pos->long_name,
224 pos->long_name_len + 1, len);
232 static int machine__write_buildid_table(struct machine *self, int fd)
235 u16 kmisc = PERF_RECORD_MISC_KERNEL,
236 umisc = PERF_RECORD_MISC_USER;
238 if (!machine__is_host(self)) {
239 kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
240 umisc = PERF_RECORD_MISC_GUEST_USER;
243 err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid,
246 err = __dsos__write_buildid_table(&self->user_dsos,
247 self->pid, umisc, fd);
251 static int dsos__write_buildid_table(struct perf_header *header, int fd)
253 struct perf_session *session = container_of(header,
254 struct perf_session, header);
256 int err = machine__write_buildid_table(&session->host_machine, fd);
261 for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
262 struct machine *pos = rb_entry(nd, struct machine, rb_node);
263 err = machine__write_buildid_table(pos, fd);
270 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
271 const char *name, bool is_kallsyms)
273 const size_t size = PATH_MAX;
274 char *realname = realpath(name, NULL),
275 *filename = malloc(size),
276 *linkname = malloc(size), *targetname;
279 if (realname == NULL || filename == NULL || linkname == NULL)
282 len = snprintf(filename, size, "%s%s%s",
283 debugdir, is_kallsyms ? "/" : "", realname);
284 if (mkdir_p(filename, 0755))
287 snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id);
289 if (access(filename, F_OK)) {
291 if (copyfile("/proc/kallsyms", filename))
293 } else if (link(realname, filename) && copyfile(name, filename))
297 len = snprintf(linkname, size, "%s/.build-id/%.2s",
298 debugdir, sbuild_id);
300 if (access(linkname, X_OK) && mkdir_p(linkname, 0755))
303 snprintf(linkname + len, size - len, "/%s", sbuild_id + 2);
304 targetname = filename + strlen(debugdir) - 5;
305 memcpy(targetname, "../..", 5);
307 if (symlink(targetname, linkname) == 0)
316 static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
317 const char *name, const char *debugdir,
320 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
322 build_id__sprintf(build_id, build_id_size, sbuild_id);
324 return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms);
327 int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
329 const size_t size = PATH_MAX;
330 char *filename = malloc(size),
331 *linkname = malloc(size);
334 if (filename == NULL || linkname == NULL)
337 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
338 debugdir, sbuild_id, sbuild_id + 2);
340 if (access(linkname, F_OK))
343 if (readlink(linkname, filename, size) < 0)
346 if (unlink(linkname))
350 * Since the link is relative, we must make it absolute:
352 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
353 debugdir, sbuild_id, filename);
355 if (unlink(linkname))
365 static int dso__cache_build_id(struct dso *self, const char *debugdir)
367 bool is_kallsyms = self->kernel && self->long_name[0] != '/';
369 return build_id_cache__add_b(self->build_id, sizeof(self->build_id),
370 self->long_name, debugdir, is_kallsyms);
373 static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir)
378 dsos__for_each_with_build_id(pos, head)
379 if (dso__cache_build_id(pos, debugdir))
385 static int machine__cache_build_ids(struct machine *self, const char *debugdir)
387 int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir);
388 ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir);
392 static int perf_session__cache_build_ids(struct perf_session *self)
396 char debugdir[PATH_MAX];
398 snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
400 if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
403 ret = machine__cache_build_ids(&self->host_machine, debugdir);
405 for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
406 struct machine *pos = rb_entry(nd, struct machine, rb_node);
407 ret |= machine__cache_build_ids(pos, debugdir);
412 static bool machine__read_build_ids(struct machine *self, bool with_hits)
414 bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits);
415 ret |= __dsos__read_build_ids(&self->user_dsos, with_hits);
419 static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits)
422 bool ret = machine__read_build_ids(&self->host_machine, with_hits);
424 for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
425 struct machine *pos = rb_entry(nd, struct machine, rb_node);
426 ret |= machine__read_build_ids(pos, with_hits);
432 static int perf_header__adds_write(struct perf_header *self,
433 struct perf_evlist *evlist, int fd)
436 struct perf_session *session;
437 struct perf_file_section *feat_sec;
442 session = container_of(self, struct perf_session, header);
444 if (perf_header__has_feat(self, HEADER_BUILD_ID &&
445 !perf_session__read_build_ids(session, true)))
446 perf_header__clear_feat(self, HEADER_BUILD_ID);
448 nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
452 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
453 if (feat_sec == NULL)
456 sec_size = sizeof(*feat_sec) * nr_sections;
458 sec_start = self->data_offset + self->data_size;
459 lseek(fd, sec_start + sec_size, SEEK_SET);
461 if (perf_header__has_feat(self, HEADER_TRACE_INFO)) {
462 struct perf_file_section *trace_sec;
464 trace_sec = &feat_sec[idx++];
466 /* Write trace info */
467 trace_sec->offset = lseek(fd, 0, SEEK_CUR);
468 read_tracing_data(fd, &evlist->entries);
469 trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
472 if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
473 struct perf_file_section *buildid_sec;
475 buildid_sec = &feat_sec[idx++];
477 /* Write build-ids */
478 buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
479 err = dsos__write_buildid_table(self, fd);
481 pr_debug("failed to write buildid table\n");
484 buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
486 if (!no_buildid_cache)
487 perf_session__cache_build_ids(session);
490 lseek(fd, sec_start, SEEK_SET);
491 err = do_write(fd, feat_sec, sec_size);
493 pr_debug("failed to write feature section\n");
499 int perf_header__write_pipe(int fd)
501 struct perf_pipe_file_header f_header;
504 f_header = (struct perf_pipe_file_header){
506 .size = sizeof(f_header),
509 err = do_write(fd, &f_header, sizeof(f_header));
511 pr_debug("failed to write perf pipe header\n");
518 int perf_header__write(struct perf_header *self, struct perf_evlist *evlist,
519 int fd, bool at_exit)
521 struct perf_file_header f_header;
522 struct perf_file_attr f_attr;
523 struct perf_header_attr *attr;
526 lseek(fd, sizeof(f_header), SEEK_SET);
528 for (i = 0; i < self->attrs; i++) {
529 attr = self->attr[i];
531 attr->id_offset = lseek(fd, 0, SEEK_CUR);
532 err = do_write(fd, attr->id, attr->ids * sizeof(u64));
534 pr_debug("failed to write perf header\n");
540 self->attr_offset = lseek(fd, 0, SEEK_CUR);
542 for (i = 0; i < self->attrs; i++) {
543 attr = self->attr[i];
545 f_attr = (struct perf_file_attr){
548 .offset = attr->id_offset,
549 .size = attr->ids * sizeof(u64),
552 err = do_write(fd, &f_attr, sizeof(f_attr));
554 pr_debug("failed to write perf header attribute\n");
559 self->event_offset = lseek(fd, 0, SEEK_CUR);
560 self->event_size = event_count * sizeof(struct perf_trace_event_type);
562 err = do_write(fd, events, self->event_size);
564 pr_debug("failed to write perf header events\n");
569 self->data_offset = lseek(fd, 0, SEEK_CUR);
572 err = perf_header__adds_write(self, evlist, fd);
577 f_header = (struct perf_file_header){
579 .size = sizeof(f_header),
580 .attr_size = sizeof(f_attr),
582 .offset = self->attr_offset,
583 .size = self->attrs * sizeof(f_attr),
586 .offset = self->data_offset,
587 .size = self->data_size,
590 .offset = self->event_offset,
591 .size = self->event_size,
595 memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features));
597 lseek(fd, 0, SEEK_SET);
598 err = do_write(fd, &f_header, sizeof(f_header));
600 pr_debug("failed to write perf header\n");
603 lseek(fd, self->data_offset + self->data_size, SEEK_SET);
609 static int perf_header__getbuffer64(struct perf_header *self,
610 int fd, void *buf, size_t size)
612 if (readn(fd, buf, size) <= 0)
615 if (self->needs_swap)
616 mem_bswap_64(buf, size);
621 int perf_header__process_sections(struct perf_header *self, int fd,
622 int (*process)(struct perf_file_section *self,
623 struct perf_header *ph,
626 struct perf_file_section *feat_sec;
630 int err = -1, feat = 1;
632 nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
636 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
640 sec_size = sizeof(*feat_sec) * nr_sections;
642 lseek(fd, self->data_offset + self->data_size, SEEK_SET);
644 if (perf_header__getbuffer64(self, fd, feat_sec, sec_size))
648 while (idx < nr_sections && feat < HEADER_LAST_FEATURE) {
649 if (perf_header__has_feat(self, feat)) {
650 struct perf_file_section *sec = &feat_sec[idx++];
652 err = process(sec, self, feat, fd);
663 int perf_file_header__read(struct perf_file_header *self,
664 struct perf_header *ph, int fd)
666 lseek(fd, 0, SEEK_SET);
668 if (readn(fd, self, sizeof(*self)) <= 0 ||
669 memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
672 if (self->attr_size != sizeof(struct perf_file_attr)) {
673 u64 attr_size = bswap_64(self->attr_size);
675 if (attr_size != sizeof(struct perf_file_attr))
678 mem_bswap_64(self, offsetof(struct perf_file_header,
680 ph->needs_swap = true;
683 if (self->size != sizeof(*self)) {
684 /* Support the previous format */
685 if (self->size == offsetof(typeof(*self), adds_features))
686 bitmap_zero(self->adds_features, HEADER_FEAT_BITS);
691 memcpy(&ph->adds_features, &self->adds_features,
692 sizeof(ph->adds_features));
694 * FIXME: hack that assumes that if we need swap the perf.data file
695 * may be coming from an arch with a different word-size, ergo different
696 * DEFINE_BITMAP format, investigate more later, but for now its mostly
697 * safe to assume that we have a build-id section. Trace files probably
698 * have several other issues in this realm anyway...
700 if (ph->needs_swap) {
701 memset(&ph->adds_features, 0, sizeof(ph->adds_features));
702 perf_header__set_feat(ph, HEADER_BUILD_ID);
705 ph->event_offset = self->event_types.offset;
706 ph->event_size = self->event_types.size;
707 ph->data_offset = self->data.offset;
708 ph->data_size = self->data.size;
712 static int __event_process_build_id(struct build_id_event *bev,
714 struct perf_session *session)
717 struct list_head *head;
718 struct machine *machine;
721 enum dso_kernel_type dso_type;
723 machine = perf_session__findnew_machine(session, bev->pid);
727 misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
730 case PERF_RECORD_MISC_KERNEL:
731 dso_type = DSO_TYPE_KERNEL;
732 head = &machine->kernel_dsos;
734 case PERF_RECORD_MISC_GUEST_KERNEL:
735 dso_type = DSO_TYPE_GUEST_KERNEL;
736 head = &machine->kernel_dsos;
738 case PERF_RECORD_MISC_USER:
739 case PERF_RECORD_MISC_GUEST_USER:
740 dso_type = DSO_TYPE_USER;
741 head = &machine->user_dsos;
747 dso = __dsos__findnew(head, filename);
749 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
751 dso__set_build_id(dso, &bev->build_id);
753 if (filename[0] == '[')
754 dso->kernel = dso_type;
756 build_id__sprintf(dso->build_id, sizeof(dso->build_id),
758 pr_debug("build id event received for %s: %s\n",
759 dso->long_name, sbuild_id);
767 static int perf_header__read_build_ids(struct perf_header *self,
768 int input, u64 offset, u64 size)
770 struct perf_session *session = container_of(self,
771 struct perf_session, header);
772 struct build_id_event bev;
773 char filename[PATH_MAX];
774 u64 limit = offset + size;
777 while (offset < limit) {
780 if (read(input, &bev, sizeof(bev)) != sizeof(bev))
783 if (self->needs_swap)
784 perf_event_header__bswap(&bev.header);
786 len = bev.header.size - sizeof(bev);
787 if (read(input, filename, len) != len)
790 __event_process_build_id(&bev, filename, session);
792 offset += bev.header.size;
799 static int perf_file_section__process(struct perf_file_section *self,
800 struct perf_header *ph,
803 if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) {
804 pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
805 "%d, continuing...\n", self->offset, feat);
810 case HEADER_TRACE_INFO:
811 trace_report(fd, false);
814 case HEADER_BUILD_ID:
815 if (perf_header__read_build_ids(ph, fd, self->offset, self->size))
816 pr_debug("Failed to read buildids, continuing...\n");
819 pr_debug("unknown feature %d, continuing...\n", feat);
825 static int perf_file_header__read_pipe(struct perf_pipe_file_header *self,
826 struct perf_header *ph, int fd,
829 if (readn(fd, self, sizeof(*self)) <= 0 ||
830 memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
833 if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0)
836 if (self->size != sizeof(*self)) {
837 u64 size = bswap_64(self->size);
839 if (size != sizeof(*self))
842 ph->needs_swap = true;
848 static int perf_header__read_pipe(struct perf_session *session, int fd)
850 struct perf_header *self = &session->header;
851 struct perf_pipe_file_header f_header;
853 if (perf_file_header__read_pipe(&f_header, self, fd,
854 session->repipe) < 0) {
855 pr_debug("incompatible file format\n");
864 int perf_header__read(struct perf_session *session, int fd)
866 struct perf_header *self = &session->header;
867 struct perf_file_header f_header;
868 struct perf_file_attr f_attr;
870 int nr_attrs, nr_ids, i, j;
872 if (session->fd_pipe)
873 return perf_header__read_pipe(session, fd);
875 if (perf_file_header__read(&f_header, self, fd) < 0) {
876 pr_debug("incompatible file format\n");
880 nr_attrs = f_header.attrs.size / sizeof(f_attr);
881 lseek(fd, f_header.attrs.offset, SEEK_SET);
883 for (i = 0; i < nr_attrs; i++) {
884 struct perf_header_attr *attr;
887 if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr)))
890 tmp = lseek(fd, 0, SEEK_CUR);
892 attr = perf_header_attr__new(&f_attr.attr);
896 nr_ids = f_attr.ids.size / sizeof(u64);
897 lseek(fd, f_attr.ids.offset, SEEK_SET);
899 for (j = 0; j < nr_ids; j++) {
900 if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id)))
903 if (perf_header_attr__add_id(attr, f_id) < 0) {
904 perf_header_attr__delete(attr);
908 if (perf_header__add_attr(self, attr) < 0) {
909 perf_header_attr__delete(attr);
913 lseek(fd, tmp, SEEK_SET);
916 if (f_header.event_types.size) {
917 lseek(fd, f_header.event_types.offset, SEEK_SET);
918 events = malloc(f_header.event_types.size);
921 if (perf_header__getbuffer64(self, fd, events,
922 f_header.event_types.size))
924 event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type);
927 perf_header__process_sections(self, fd, perf_file_section__process);
929 lseek(fd, self->data_offset, SEEK_SET);
937 u64 perf_header__sample_type(struct perf_header *header)
942 for (i = 0; i < header->attrs; i++) {
943 struct perf_header_attr *attr = header->attr[i];
946 type = attr->attr.sample_type;
947 else if (type != attr->attr.sample_type)
948 die("non matching sample_type");
954 bool perf_header__sample_id_all(const struct perf_header *header)
956 bool value = false, first = true;
959 for (i = 0; i < header->attrs; i++) {
960 struct perf_header_attr *attr = header->attr[i];
963 value = attr->attr.sample_id_all;
965 } else if (value != attr->attr.sample_id_all)
966 die("non matching sample_id_all");
972 struct perf_event_attr *
973 perf_header__find_attr(u64 id, struct perf_header *header)
978 * We set id to -1 if the data file doesn't contain sample
979 * ids. This can happen when the data file contains one type
980 * of event and in that case, the header can still store the
981 * event attribute information. Check for this and avoid
982 * walking through the entire list of ids which may be large.
985 if (header->attrs > 0)
986 return &header->attr[0]->attr;
990 for (i = 0; i < header->attrs; i++) {
991 struct perf_header_attr *attr = header->attr[i];
994 for (j = 0; j < attr->ids; j++) {
995 if (attr->id[j] == id)
1003 int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
1004 event__handler_t process,
1005 struct perf_session *session)
1011 size = sizeof(struct perf_event_attr);
1012 size = ALIGN(size, sizeof(u64));
1013 size += sizeof(struct perf_event_header);
1014 size += ids * sizeof(u64);
1021 ev->attr.attr = *attr;
1022 memcpy(ev->attr.id, id, ids * sizeof(u64));
1024 ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
1025 ev->attr.header.size = size;
1027 err = process(ev, NULL, session);
1034 int event__synthesize_attrs(struct perf_header *self, event__handler_t process,
1035 struct perf_session *session)
1037 struct perf_header_attr *attr;
1040 for (i = 0; i < self->attrs; i++) {
1041 attr = self->attr[i];
1043 err = event__synthesize_attr(&attr->attr, attr->ids, attr->id,
1046 pr_debug("failed to create perf header attribute\n");
1054 int event__process_attr(event_t *self, struct perf_session *session)
1056 struct perf_header_attr *attr;
1057 unsigned int i, ids, n_ids;
1059 attr = perf_header_attr__new(&self->attr.attr);
1063 ids = self->header.size;
1064 ids -= (void *)&self->attr.id - (void *)self;
1065 n_ids = ids / sizeof(u64);
1067 for (i = 0; i < n_ids; i++) {
1068 if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) {
1069 perf_header_attr__delete(attr);
1074 if (perf_header__add_attr(&session->header, attr) < 0) {
1075 perf_header_attr__delete(attr);
1079 perf_session__update_sample_type(session);
1084 int event__synthesize_event_type(u64 event_id, char *name,
1085 event__handler_t process,
1086 struct perf_session *session)
1092 memset(&ev, 0, sizeof(ev));
1094 ev.event_type.event_type.event_id = event_id;
1095 memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME);
1096 strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
1098 ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
1099 size = strlen(name);
1100 size = ALIGN(size, sizeof(u64));
1101 ev.event_type.header.size = sizeof(ev.event_type) -
1102 (sizeof(ev.event_type.event_type.name) - size);
1104 err = process(&ev, NULL, session);
1109 int event__synthesize_event_types(event__handler_t process,
1110 struct perf_session *session)
1112 struct perf_trace_event_type *type;
1115 for (i = 0; i < event_count; i++) {
1118 err = event__synthesize_event_type(type->event_id, type->name,
1121 pr_debug("failed to create perf header event type\n");
1129 int event__process_event_type(event_t *self,
1130 struct perf_session *session __unused)
1132 if (perf_header__push_event(self->event_type.event_type.event_id,
1133 self->event_type.event_type.name) < 0)
1139 int event__synthesize_tracing_data(int fd, struct perf_evlist *evlist,
1140 event__handler_t process,
1141 struct perf_session *session __unused)
1144 ssize_t size = 0, aligned_size = 0, padding;
1147 memset(&ev, 0, sizeof(ev));
1149 ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
1150 size = read_tracing_data_size(fd, &evlist->entries);
1153 aligned_size = ALIGN(size, sizeof(u64));
1154 padding = aligned_size - size;
1155 ev.tracing_data.header.size = sizeof(ev.tracing_data);
1156 ev.tracing_data.size = aligned_size;
1158 process(&ev, NULL, session);
1160 err = read_tracing_data(fd, &evlist->entries);
1161 write_padded(fd, NULL, 0, padding);
1163 return aligned_size;
1166 int event__process_tracing_data(event_t *self,
1167 struct perf_session *session)
1169 ssize_t size_read, padding, size = self->tracing_data.size;
1170 off_t offset = lseek(session->fd, 0, SEEK_CUR);
1173 /* setup for reading amidst mmap */
1174 lseek(session->fd, offset + sizeof(struct tracing_data_event),
1177 size_read = trace_report(session->fd, session->repipe);
1179 padding = ALIGN(size_read, sizeof(u64)) - size_read;
1181 if (read(session->fd, buf, padding) < 0)
1182 die("reading input file");
1183 if (session->repipe) {
1184 int retw = write(STDOUT_FILENO, buf, padding);
1185 if (retw <= 0 || retw != padding)
1186 die("repiping tracing data padding");
1189 if (size_read + padding != size)
1190 die("tracing data size mismatch");
1192 return size_read + padding;
1195 int event__synthesize_build_id(struct dso *pos, u16 misc,
1196 event__handler_t process,
1197 struct machine *machine,
1198 struct perf_session *session)
1207 memset(&ev, 0, sizeof(ev));
1209 len = pos->long_name_len + 1;
1210 len = ALIGN(len, NAME_ALIGN);
1211 memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
1212 ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
1213 ev.build_id.header.misc = misc;
1214 ev.build_id.pid = machine->pid;
1215 ev.build_id.header.size = sizeof(ev.build_id) + len;
1216 memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
1218 err = process(&ev, NULL, session);
1223 int event__process_build_id(event_t *self,
1224 struct perf_session *session)
1226 __event_process_build_id(&self->build_id,
1227 self->build_id.filename,
1232 void disable_buildid_cache(void)
1234 no_buildid_cache = true;