Hi Steven.
> Index: linux-compile-i386.git/arch/x86/Kconfig
> ===================================================================
> --- linux-compile-i386.git.orig/arch/x86/Kconfig 2008-01-09
> 14:09:36.000000000 -0500
> +++ linux-compile-i386.git/arch/x86/Kconfig 2008-01-09 14:10:07.000000000
> -0500
> @@ -28,6 +28,10 @@ config GENERIC_CMOS_UPDATE
> bool
> default y
>
> +config ARCH_HAS_MCOUNT
> + bool
> + default y
> +
Please use the following scheme:
arch/x86/Kconfig:
config X86
+ select HAVE_MCOUNT
lib/tracing/Kconfig
+ # ARCH shall select HAVE_MCOUNT if they provide this function
+ config HAVE_MCOUNT
+ bool
+
+ config MCOUNT
+ bool
+ select FRAME_POINTER
And then in your later patches:
+config MCOUNT_TRACER
+ bool "Profiler instrumentation based tracer"
+ depends on DEBUG_KERNEL && HAVE_MCOUNT
+ select MCOUNT
+ help
+ Use profiler....
The "default n" is a noop since this is the default.
And note that the depends on is removed from MCOUNT
because you use it as a select target (so dependencies
are not checked anyway).
With this scheme implmented you:
- Use new naming convention (HAVE_*)
- Avoid defining one config variable per arch
- Do not have dependencies on selected symbols
- More compact representation in arch Kconfig files
Sam
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