1 files changed, 6 insertions, 4 deletions

diff --git a/parse-events.c b/parse-events.c
index 30d3ea0..0600973 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -3536,13 +3536,15 @@ static void parse_header_field(const char *field,
  * @pevent: the handle to the pevent
  * @buf: the buffer storing the header page format string
  * @size: the size of @buf
+ * @long_size: the long size to use if there is no header
  *
  * This parses the header page format for information on the
  * ring buffer used. The @buf should be copied from
  *
  * /sys/kernel/debug/tracing/events/header_page
  */
-int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size)
+int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
+                             int long_size)
 {
         if (!size) {
                 /*
@@ -3550,10 +3552,10 @@ int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long siz
                  * Sorry but we just use what we find here in user space.
                  */
                 pevent->header_page_ts_size = sizeof(long long);
-                pevent->header_page_size_size = sizeof(long);
-                pevent->header_page_data_offset = sizeof(long long) + sizeof(long);
+                pevent->header_page_size_size = long_size;
+                pevent->header_page_data_offset = sizeof(long long) + long_size;
                 pevent->old_format = 1;
-                return 0;
+                return -1;
         }
         init_input_buf(buf, size);