linux-kernel - [PATCH 1 of 2] perf tools: notify user when unrecognized event is specified

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Message-Id: <03ec9ee96f17cef05424.1256603584@localhost>
Date:	Tue, 27 Oct 2009 00:33:04 -0000
From:	Marti Raudsepp <marti@...fo.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Marti Raudsepp <marti@...fo.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 1 of 2] perf tools: notify user when unrecognized event is
	specified

Previously no indication was given about what went wrong.

Signed-off-by: Marti Raudsepp <marti@...fo.org>

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -677,6 +677,8 @@
 	if (ret != EVT_FAILED)
 		goto modifier;
 
+	fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
+	fprintf(stderr, "Run 'perf list' for a list of valid events\n");
 	return EVT_FAILED;
 
 modifier:
--
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