Re: [PATCH] x86/raid6: correctly check for assembler capabilities

H. Peter Anvin
2015-06-16T19:47:56Z

On 02/03/2015 01:03 PM, Paul Bolle wrote:
> On Wed, 2015-02-04 at 07:50 +1100, NeilBrown wrote:
>> Actually the prefix of this macro is "CONFIG_AS_", not "CONFIG_" :-)
>> CONFIG_AS_ is reserved for assembly magic, and is never used by the the
>> kconfig system.
>>
>> (Well..... I might have made bits of that up, but "git grep 'config AS_'"
>> doesn't find anything).
>
> That's correct, there are no Kconfig symbols starting with AS_. But
> still, I would like to hear whether there's a reasonable chance I might
> convince other people to adopt my peeve.
>
> The thinking behind that peeve is, basically, that where people
> encounter a CONFIG_* macro they should only have to check the .config
> file to see how that macro was evaluated in the build that was used.
>

There is a hope/intent that eventually the config system will be able to
incorporate toolchain dependencies for a bunch of reasons.

-hpa