[tip:perf/core] perf tools: Add empty rule for new line in event syntax parsing

From: tip-bot for Jiri Olsa
Date: Fri Jul 06 2012 - 07:23:57 EST

Commit-ID: 8c5f0a84c6b16e04195001bfd78281909519cf09
Gitweb: http://git.kernel.org/tip/8c5f0a84c6b16e04195001bfd78281909519cf09
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Wed, 4 Jul 2012 00:00:39 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 5 Jul 2012 11:22:29 -0300

perf tools: Add empty rule for new line in event syntax parsing

The flex generator prints out each input character that is ignored by
lex rules.

Since the alias processing, we can have '\n' characters on input. We
need to assign empty rule to it, so it's not printed out.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1341352848-11833-2-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/util/parse-events.l | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index a066894..6cbe092 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -152,6 +152,7 @@ r{num_raw_hex} { return raw(yyscanner); }
, { return ','; }
: { return ':'; }
= { return '='; }
+\n { }

{modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); }
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