From 2fe5f92f600441a6c27d757ab6da83a8a8ad2ee2 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Sun, 7 Jun 2009 17:58:23 +0200
Subject: [PATCH] --- yaml --- r: 147700 b: refs/heads/master c:
 a14832ff977e78d1982cdf78cdabb1f2320d9ac8 h: refs/heads/master v: v3

---
 [refs]                            | 2 +-
 trunk/tools/perf/builtin-report.c | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 8f86d28d72fd..cd63989a2fe7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 30c806a094493beb7691bc7957dfa02dee96230a
+refs/heads/master: a14832ff977e78d1982cdf78cdabb1f2320d9ac8
diff --git a/trunk/tools/perf/builtin-report.c b/trunk/tools/perf/builtin-report.c
index 242e09ff3658..f053a7463dcf 100644
--- a/trunk/tools/perf/builtin-report.c
+++ b/trunk/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);
 	}