Re: [RFC] x86: merge nmi_32-64 to nmi.c

From: Andi Kleen
Date: Sun May 18 2008 - 15:13:24 EST

Jeremy Fitzhardinge wrote:
> Andi Kleen wrote:
>> The whole idea was pretty bad. Ifdefs are not ugly because the syntax
>> looks ugly, but because it's a semantically ugly construct with bad
>> maintainability impact.
>> Trying to put syntactical sugar around that is a doomed exercise. It
>> will be still ugly, no matter what you do.
> Not true. Using C rather than CPP to control the compilation of config
> options has the big win that all code paths are still visible to the
> compiler.

A small win. Still lots of other problems, including testing.

In some cases that's not what you want, but it often is, and
> it would avoid some degree if inadvertent breakage of options. It can
> also be syntactically a lot more pleasant.

Well it's still an unnecessary different code path and making
it look nicer is just an excuse from properly cleaning it up.


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