Re: RFC: How to handle function tracing, frame pointers and -mfentry?

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On 04/27/2012 01:27 PM, Sam Ravnborg wrote:
>> My question is, how do I remove the dependency in kconfig based on the
>> compiler?
> Allow the user to select one of:
> 1) function tracer
> 2) frame pointer
> 3) none of the above
> This should be trivial to do in Kconfig language.
> If "function tracer" is selected then use -mfentry if supported,
> with a fallback to frame pointers.
> This looks simple IMO and should be easy to implement too.

Except it is the wrong thing.  This is not the only user of frame
pointer.  What I think you mean is remove the dependency in Kconfig, but
force the frame pointer enabled if -mfentry is not supported.


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