[RFC] Kernel Access to Ftrace instances.

[Divya Indi]

Hi, 
Please Review the patches that follow. These include -

[PATCH 1/3] tracing: Relevant changes for kernel access to Ftrace instances.
[PATCH 2/3] tracing: Adding additional NULL checks.
[PATCH 3/3] tracing: Add 2 new funcs. for kernel access to Ftrace instances.

Let me know if you have any concerns or questions. 

A sample module demonstrating the use of the above functions will follow soon. 

Thanks,
Divya