Re: [RFC][PATCH 2/4] ftrace: Add -mfentry to Makefile on functiontracer

[Steven Rostedt]

On Wed, 2011-02-09 at 15:02 -0500, Steven Rostedt wrote:

>  ifdef CONFIG_FUNCTION_TRACER
> -KBUILD_CFLAGS	+= -pg
> +ifdef CONFIG_HAVE_FENTRY
> +CC_HAS_FENTRY	:= $(call cc-option, -mfentry -DCC_HAS_FENTRY)

I should include a thanks to H. Peter Anvin in the change log for
telling me about the cc-option trick.

-- Steve

> +endif
> +KBUILD_CFLAGS	+= -pg $(CC_HAS_FENTRY)
> +KBUILD_AFLAGS	+= $(CC_HAS_FENTRY)
>  ifdef CONFIG_DYNAMIC_FTRACE
>  	ifdef CONFIG_HAVE_C_RECORDMCOUNT
>  		BUILD_C_RECORDMCOUNT := y


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