ftrace: Have the function probes call their own function

Now that the function probes have their own ftrace_ops, there's no reason to
continue using the ftrace_func_hash to find which probe to call in the
function callback. The ops that is passed in to the function callback is
part of the probe_ops to call.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

include/linux/ftrace.h

@@ -443,8 +443,8 @@ enum {
 	FTRACE_ITER_FILTER	= (1 << 0),
 	FTRACE_ITER_NOTRACE	= (1 << 1),
 	FTRACE_ITER_PRINTALL	= (1 << 2),
-	FTRACE_ITER_DO_HASH	= (1 << 3),
-	FTRACE_ITER_HASH	= (1 << 4),
+	FTRACE_ITER_DO_PROBES	= (1 << 3),
+	FTRACE_ITER_PROBE	= (1 << 4),
 	FTRACE_ITER_ENABLED	= (1 << 5),
 };
 

kernel/trace/trace.h

@@ -933,6 +933,7 @@ static inline void ftrace_pid_follow_fork(struct trace_array *tr, bool enable) {
 
 struct ftrace_probe_ops {
 	struct ftrace_ops	ops;
+	struct list_head	list;
 	void			(*func)(unsigned long ip,
 					unsigned long parent_ip,
 					struct ftrace_probe_ops *ops,