extern int ftrace_event_reg(struct ftrace_event_call *event,
enum trace_reg type, void *data);
-int ftrace_output_event(struct trace_iterator *iter, struct ftrace_event_call *event,
- char *fmt, ...);
-
int ftrace_event_define_field(struct ftrace_event_call *call,
char *type, int len, char *item, int offset,
int field_size, int sign, int filter);