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@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091014194358.637991808@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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 f73ee55b51e8..59e4e4db7438 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));