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Date:	Tue, 27 Oct 2009 13:54:34 GMT
From:	tip-bot for Marti Raudsepp <>
Subject: [tip:perf/core] perf tools: Notify user when unrecognized event is specified

Commit-ID:  85df6f683efa457440eb922272fd5a71aa022ad4
Author:     Marti Raudsepp <>
AuthorDate: Tue, 27 Oct 2009 00:33:04 +0000
Committer:  Ingo Molnar <>
CommitDate: Tue, 27 Oct 2009 14:52:31 +0100

perf tools: Notify user when unrecognized event is specified

Previously no indication was given about what went wrong.

Signed-off-by: Marti Raudsepp <>
Cc: Peter Zijlstra <>
Cc: Paul Mackerras <>
LKML-Reference: <03ec9ee96f17cef05424.1256603584@...alhost>
Signed-off-by: Ingo Molnar <>
 tools/perf/util/parse-events.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index b097570..e9e6d5c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -678,6 +678,8 @@ parse_event_symbols(const char **str, struct perf_event_attr *attr)
 	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;
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