parse-events: Show where error occurred in filtering

Show a nice pointer where an error occurred in filtering:

 # trace-cmd report -F 'sched_switch:(next_pid==x)||)prev_pid == 1'
version = 6
cpus=4
trace-cmd: No such file or directory
  Error filtering: sched_switch:(next_pid==x)||)prev_pid == 1
(next_pid==x)||)prev_pid == 1
               ^
Expected end where ) was found

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 beab8f3..99c9593 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -53,6 +53,16 @@ static void init_input_buf(const char *buf, unsigned long long size)
         input_buf_ptr = 0;
 }
 
+const char *pevent_get_input_buf(void)
+{
+        return input_buf;
+}
+
+unsigned long long pevent_get_input_buf_ptr(void)
+{
+        return input_buf_ptr;
+}
+
 struct event_handler {
         struct event_handler            *next;
         int                             id;