Commit ec19b859 authored by Steven Rostedt (VMware)'s avatar Steven Rostedt (VMware)
Browse files

ftrace: Move the probe function into the tracing directory 



As nothing outside the tracing directory uses the function probes mechanism,
I'm moving the prototypes out of the include/linux/ftrace.h and into the
local kernel/trace/trace.h header. I plan on making them hook to the
trace_array structure which is local to kernel/trace, and I do not want to
expose it to the rest of the kernel. This requires that the probe functions
must also be local to tracing. But luckily nothing else uses them.

Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent a9064f67

include/linux/ftrace.h

+0 −24
Original line number Diff line number Diff line
@@ -360,30 +360,6 @@ void ftrace_bug(int err, struct dyn_ftrace *rec); 


struct seq_file;



struct ftrace_probe_ops {

	void			(*func)(unsigned long ip,

					unsigned long parent_ip,

					void **data);

	int			(*init)(struct ftrace_probe_ops *ops,

					unsigned long ip, void **data);

	void			(*free)(struct ftrace_probe_ops *ops,

					unsigned long ip, void **data);

	int			(*print)(struct seq_file *m,

					 unsigned long ip,

					 struct ftrace_probe_ops *ops,

					 void *data);

};



extern int

register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,

			      void *data);

extern void

unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,

				void *data);

extern void

unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);

extern void unregister_ftrace_function_probe_all(char *glob);



extern int ftrace_text_reserved(const void *start, const void *end);



extern int ftrace_nr_registered_ops(void);

kernel/trace/trace.h

+25 −0
Original line number Diff line number Diff line
@@ -923,6 +923,31 @@ static inline void ftrace_pid_follow_fork(struct trace_array *tr, bool enable) { 
#endif /* CONFIG_FUNCTION_TRACER */



#if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_DYNAMIC_FTRACE)



struct ftrace_probe_ops {

	void			(*func)(unsigned long ip,

					unsigned long parent_ip,

					void **data);

	int			(*init)(struct ftrace_probe_ops *ops,

					unsigned long ip, void **data);

	void			(*free)(struct ftrace_probe_ops *ops,

					unsigned long ip, void **data);

	int			(*print)(struct seq_file *m,

					 unsigned long ip,

					 struct ftrace_probe_ops *ops,

					 void *data);

};



extern int

register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,

			      void *data);

extern void

unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,

				void *data);

extern void

unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);

extern void unregister_ftrace_function_probe_all(char *glob);



void ftrace_create_filter_files(struct ftrace_ops *ops,

				struct dentry *parent);

void ftrace_destroy_filter_files(struct ftrace_ops *ops);

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