mm_init() functions in kernel code

Greg groglein at gmail.com
Tue May 17 22:19:55 EDT 2011


On Tue, May 17, 2011 at 6:43 PM, Vikram Narayanan <vikram186 at gmail.com> wrote:
> Hi,
>
> I saw two mm_init functions in the kernel source code.
> 1) init/main.c    (http://lxr.linux.no/#linux+v2.6.38/init/main.c#L530)
> 2) kernel/fork.c (http://lxr.linux.no/#linux+v2.6.38/kernel/fork.c#L482)
>
> Are the above functions go inside a single binary? How this doesn't
> produce a redefinition error?
>
> Thanks,
> Vikram
Both of these define mm_init as static so they aren't visible outside
the source file that has them.  Plus they don't use the EXPORT_SYMBOL
macro to indicate that it can be called from elsewhere in the kernel.
There is another mm_init function in drivers/block/umem.c as well
which is also static.

Cheers,
Greg



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