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-rw-r--r--tools/perf/util/header.c37
1 files changed, 36 insertions, 1 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b92a457ca32..ec4d4c2f952 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -237,9 +237,44 @@ struct perf_header *perf_header__read(int fd)
self->data_offset = f_header.data.offset;
self->data_size = f_header.data.size;
- lseek(fd, self->data_offset + self->data_size, SEEK_SET);
+ lseek(fd, self->data_offset, SEEK_SET);
self->frozen = 1;
return self;
}
+
+u64 perf_header__sample_type(struct perf_header *header)
+{
+ u64 type = 0;
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+
+ if (!type)
+ type = attr->attr.sample_type;
+ else if (type != attr->attr.sample_type)
+ die("non matching sample_type");
+ }
+
+ return type;
+}
+
+struct perf_counter_attr *
+perf_header__find_attr(u64 id, struct perf_header *header)
+{
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+ int j;
+
+ for (j = 0; j < attr->ids; j++) {
+ if (attr->id[j] == id)
+ return &attr->attr;
+ }
+ }
+
+ return NULL;
+}