1 files changed, 7 insertions, 1 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 212fade7ee74..9aae360c0f28 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -287,10 +287,16 @@ struct perf_header *perf_header__read(int fd)
         do_read(fd, &f_header, sizeof(f_header));
 
         if (f_header.magic      != PERF_MAGIC           ||
-            f_header.size       != sizeof(f_header)     ||
             f_header.attr_size  != sizeof(f_attr))
                 die("incompatible file format");
 
+        if (f_header.size != sizeof(f_header)) {
+                /* Support the previous format */
+                if (f_header.size == offsetof(typeof(f_header), trace_info))
+                        f_header.trace_info.size = 0;
+                else
+                        die("incompatible file format");
+        }
         nr_attrs = f_header.attrs.size / sizeof(f_attr);
         lseek(fd, f_header.attrs.offset, SEEK_SET);