linux-kernel - [tip:perf/core] perf tools: Handle newlines in trace parsing better

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Date:	Thu, 15 Oct 2009 08:49:25 GMT
From:	tip-bot for Steven Rostedt <srostedt@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, hpa@...or.com,
	mingo@...hat.com, peterz@...radead.org, fweisbec@...il.com,
	srostedt@...hat.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf tools: Handle newlines in trace parsing better

Commit-ID:  f1d1feecf07261d083859ecfef0d4399036f9683
Gitweb:     http://git.kernel.org/tip/f1d1feecf07261d083859ecfef0d4399036f9683
Author:     Steven Rostedt <srostedt@...hat.com>
AuthorDate: Wed, 14 Oct 2009 15:43:37 -0400
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 15 Oct 2009 10:42:37 +0200

perf tools: Handle newlines in trace parsing better

New lines between args in the trace format can break the
parsing. This should not be the case.

Signed-off-by: Steven Rostedt <srostedt@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <20091014194358.637991808@...dmis.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/util/trace-event-parse.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index f73ee55..59e4e4d 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1716,12 +1716,18 @@ process_arg_token(struct event *event, struct print_arg *arg,
 
 static int event_read_print_args(struct event *event, struct print_arg **list)
 {
-	enum event_type type;
+	enum event_type type = EVENT_ERROR;
 	struct print_arg *arg;
 	char *token;
 	int args = 0;
 
 	do {
+		if (type == EVENT_NEWLINE) {
+			free_token(token);
+			type = read_token_item(&token);
+			continue;
+		}
+
 		arg = malloc_or_die(sizeof(*arg));
 		memset(arg, 0, sizeof(*arg));
 
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