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SubjectRe: [PATCH] Replacing __SMP__ by CONFIG_SMP globally in linux-2.3.39.
"Richard B. Johnson" wrote:
> What is its purpose? __SMP__ is not just defined or not defined from
> the linux kernel source directory, but also used for writing modules
> which, in fact, may not exist within the kernel source directory at
> all.
>
> So, if such a patch goes into the kernel, module makefiles now have
> to be modified to define "CONFIG_SMP" instead of "__SMP__" which,
> since they may not even have a "configuration", becomes just another
> PITA to support "change for the sake of change".

__SMP__ has been obsolete ever since SMP was made a real config option.
This patch is just finishing the job. If a standalone module must
continue to use __SMP__, it could do:

#if defined(CONFIG_SMP) && !defined(__SMP__)
#define __SMP__
#endif

This has been discussed before. Change during a development kernel is
expected. Backwards compatability is not guaranteed. We don't want to
fall into that trap.

--

Brian Gerst



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