Make the trace_seq buffers printable

If the trace seq buffers do not fill up with one of the parse event
APIs, then end them with a '0'. This will allow the buffers to be
printable on return (if seq->full is not set).

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/parse-events.c b/parse-events.c
index c831180..7e7b74f 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -2878,6 +2878,9 @@ void pevent_data_lat_fmt(struct trace_seq *s, void *data, int size __unused)
                 trace_seq_putc(s, '.');
         else
                 trace_seq_printf(s, "%d", lock_depth);
+
+        if (!s->full)
+                trace_seq_putc(s, 0);
 }
 
 int pevent_data_type(void *data)
@@ -2910,6 +2913,9 @@ void pevent_event_info(struct trace_seq *s, struct event *event,
                 event->handler(s, data, size, event, cpu, nsecs);
         else
                 pretty_print(s, data, size, event);
+
+        if (!s->full)
+                trace_seq_putc(s, 0);
 }
 
 void pevent_print_event(struct trace_seq *s,
@@ -2950,6 +2956,10 @@ void pevent_print_event(struct trace_seq *s,
                 event->handler(s, data, size, event, cpu, nsecs);
         else
                 pretty_print(s, data, size, event);
+
+        if (!s->full)
+                trace_seq_putc(s, 0);
+
 }
 
 static void print_fields(struct trace_seq *s, struct print_flag_sym *field)