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-rw-r--r--tools/perf/util/session.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 8f83a1835766..0564a5cfb12e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -27,8 +27,10 @@ static int perf_session__open(struct perf_session *self, bool force)
27 27
28 self->fd = open(self->filename, O_RDONLY); 28 self->fd = open(self->filename, O_RDONLY);
29 if (self->fd < 0) { 29 if (self->fd < 0) {
30 pr_err("failed to open file: %s", self->filename); 30 int err = errno;
31 if (!strcmp(self->filename, "perf.data")) 31
32 pr_err("failed to open %s: %s", self->filename, strerror(err));
33 if (err == ENOENT && !strcmp(self->filename, "perf.data"))
32 pr_err(" (try 'perf record' first)"); 34 pr_err(" (try 'perf record' first)");
33 pr_err("\n"); 35 pr_err("\n");
34 return -errno; 36 return -errno;