> urgh.
quoted text
> 
> We have HAVE_ARCH*
> We have __HAVE_ARCH*
> We have ARCH_HAS*
> We have __ARCH_HAS*
> 
> what a mess.
> 
> Probably the preferred (but still ugly) approach is to implement
> CONFIG_ARCH_*.
Only if it is a Kconfig symbol.

We have recently started to use 'HAVE_*' for boolean symbols used
to select a specific function for one architecture.
See arch/Kconfig for a few samples.

And Documentation/kbuild/kconfig-language.txt for usage hints.

	Sam
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