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-rw-r--r--tools/perf/util/session.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index ea17dfb..cc5e6be 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -107,8 +107,19 @@ struct perf_session *perf_session__new(const char *filename, int mode,
bool force, bool repipe,
struct perf_tool *tool)
{
- size_t len = filename ? strlen(filename) : 0;
- struct perf_session *self = zalloc(sizeof(*self) + len);
+ struct perf_session *self;
+ struct stat st;
+ size_t len;
+
+ if (!filename || !strlen(filename)) {
+ if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
+ filename = "-";
+ else
+ filename = "perf.data";
+ }
+
+ len = strlen(filename);
+ self = zalloc(sizeof(*self) + len);
if (self == NULL)
goto out;
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