diff options
| -rw-r--r-- | tools/perf/builtin-report.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 242e09f..f053a74 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1120,7 +1120,10 @@ static int __cmd_report(void) input = open(input_name, O_RDONLY); if (input < 0) { - perror("failed to open file"); + fprintf(stderr, " failed to open file: %s", input_name); + if (!strcmp(input_name, "perf.data")) + fprintf(stderr, " (try 'perf record' first)"); + fprintf(stderr, "\n"); exit(-1); } |
