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-rw-r--r--tools/perf/util/header.c79
1 files changed, 56 insertions, 23 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d7e67b167ea3..989fa2dee2fd 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -152,6 +152,11 @@ void perf_header__set_feat(struct perf_header *self, int feat)
set_bit(feat, self->adds_features);
}
+void perf_header__clear_feat(struct perf_header *self, int feat)
+{
+ clear_bit(feat, self->adds_features);
+}
+
bool perf_header__has_feat(const struct perf_header *self, int feat)
{
return test_bit(feat, self->adds_features);
@@ -265,15 +270,16 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
const char *name, bool is_kallsyms)
{
const size_t size = PATH_MAX;
- char *filename = malloc(size),
+ char *realname = realpath(name, NULL),
+ *filename = malloc(size),
*linkname = malloc(size), *targetname;
int len, err = -1;
- if (filename == NULL || linkname == NULL)
+ if (realname == NULL || filename == NULL || linkname == NULL)
goto out_free;
len = snprintf(filename, size, "%s%s%s",
- debugdir, is_kallsyms ? "/" : "", name);
+ debugdir, is_kallsyms ? "/" : "", realname);
if (mkdir_p(filename, 0755))
goto out_free;
@@ -283,7 +289,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
if (is_kallsyms) {
if (copyfile("/proc/kallsyms", filename))
goto out_free;
- } else if (link(name, filename) && copyfile(name, filename))
+ } else if (link(realname, filename) && copyfile(name, filename))
goto out_free;
}
@@ -300,6 +306,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
if (symlink(targetname, linkname) == 0)
err = 0;
out_free:
+ free(realname);
free(filename);
free(linkname);
return err;
@@ -431,8 +438,10 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
int idx = 0, err;
session = container_of(self, struct perf_session, header);
- if (perf_session__read_build_ids(session, true))
- perf_header__set_feat(self, HEADER_BUILD_ID);
+
+ if (perf_header__has_feat(self, HEADER_BUILD_ID &&
+ !perf_session__read_build_ids(session, true)))
+ perf_header__clear_feat(self, HEADER_BUILD_ID);
nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
if (!nr_sections)
@@ -454,7 +463,7 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
/* Write trace info */
trace_sec->offset = lseek(fd, 0, SEEK_CUR);
- read_tracing_data(fd, attrs, nr_counters);
+ read_tracing_data(fd, &evsel_list);
trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
}
@@ -597,7 +606,7 @@ int perf_header__write(struct perf_header *self, int fd, bool at_exit)
static int perf_header__getbuffer64(struct perf_header *self,
int fd, void *buf, size_t size)
{
- if (do_read(fd, buf, size) <= 0)
+ if (readn(fd, buf, size) <= 0)
return -1;
if (self->needs_swap)
@@ -653,7 +662,7 @@ int perf_file_header__read(struct perf_file_header *self,
{
lseek(fd, 0, SEEK_SET);
- if (do_read(fd, self, sizeof(*self)) <= 0 ||
+ if (readn(fd, self, sizeof(*self)) <= 0 ||
memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
return -1;
@@ -814,7 +823,7 @@ static int perf_file_header__read_pipe(struct perf_pipe_file_header *self,
struct perf_header *ph, int fd,
bool repipe)
{
- if (do_read(fd, self, sizeof(*self)) <= 0 ||
+ if (readn(fd, self, sizeof(*self)) <= 0 ||
memcmp(&self->magic, __perf_magic, sizeof(self->magic)))
return -1;
@@ -939,6 +948,24 @@ u64 perf_header__sample_type(struct perf_header *header)
return type;
}
+bool perf_header__sample_id_all(const struct perf_header *header)
+{
+ bool value = false, first = true;
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+
+ if (first) {
+ value = attr->attr.sample_id_all;
+ first = false;
+ } else if (value != attr->attr.sample_id_all)
+ die("non matching sample_id_all");
+ }
+
+ return value;
+}
+
struct perf_event_attr *
perf_header__find_attr(u64 id, struct perf_header *header)
{
@@ -946,11 +973,16 @@ perf_header__find_attr(u64 id, struct perf_header *header)
/*
* We set id to -1 if the data file doesn't contain sample
- * ids. Check for this and avoid walking through the entire
- * list of ids which may be large.
+ * ids. This can happen when the data file contains one type
+ * of event and in that case, the header can still store the
+ * event attribute information. Check for this and avoid
+ * walking through the entire list of ids which may be large.
*/
- if (id == -1ULL)
+ if (id == -1ULL) {
+ if (header->attrs > 0)
+ return &header->attr[0]->attr;
return NULL;
+ }
for (i = 0; i < header->attrs; i++) {
struct perf_header_attr *attr = header->attr[i];
@@ -980,21 +1012,23 @@ int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
ev = malloc(size);
+ if (ev == NULL)
+ return -ENOMEM;
+
ev->attr.attr = *attr;
memcpy(ev->attr.id, id, ids * sizeof(u64));
ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
ev->attr.header.size = size;
- err = process(ev, session);
+ err = process(ev, NULL, session);
free(ev);
return err;
}
-int event__synthesize_attrs(struct perf_header *self,
- event__handler_t process,
+int event__synthesize_attrs(struct perf_header *self, event__handler_t process,
struct perf_session *session)
{
struct perf_header_attr *attr;
@@ -1064,7 +1098,7 @@ int event__synthesize_event_type(u64 event_id, char *name,
ev.event_type.header.size = sizeof(ev.event_type) -
(sizeof(ev.event_type.event_type.name) - size);
- err = process(&ev, session);
+ err = process(&ev, NULL, session);
return err;
}
@@ -1099,8 +1133,7 @@ int event__process_event_type(event_t *self,
return 0;
}
-int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
- int nb_events,
+int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
event__handler_t process,
struct perf_session *session __unused)
{
@@ -1111,7 +1144,7 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
memset(&ev, 0, sizeof(ev));
ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
- size = read_tracing_data_size(fd, pattrs, nb_events);
+ size = read_tracing_data_size(fd, pattrs);
if (size <= 0)
return size;
aligned_size = ALIGN(size, sizeof(u64));
@@ -1119,9 +1152,9 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
ev.tracing_data.header.size = sizeof(ev.tracing_data);
ev.tracing_data.size = aligned_size;
- process(&ev, session);
+ process(&ev, NULL, session);
- err = read_tracing_data(fd, pattrs, nb_events);
+ err = read_tracing_data(fd, pattrs);
write_padded(fd, NULL, 0, padding);
return aligned_size;
@@ -1179,7 +1212,7 @@ int event__synthesize_build_id(struct dso *pos, u16 misc,
ev.build_id.header.size = sizeof(ev.build_id) + len;
memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
- err = process(&ev, session);
+ err = process(&ev, NULL, session);
return err;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 20:09:43 +0100