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module_init and module_exit are defined in module.h

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Both module_init and module_exit are defined in
include/linux/module.h
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leovincentseles 2022-06-25 23:15:48 +08:00
parent 63ac35dd4f
commit 22ebabe297
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lkmpg.tex
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@ -419,7 +419,7 @@ What happens?
\subsection{Hello and Goodbye}
\label{hello_n_goodbye}
In early kernel versions you had to use the \cpp|init_module| and \cpp|cleanup_module| functions, as in the first hello world example, but these days you can name those anything you want by using the \cpp|module_init| and \cpp|module_exit| macros.
These macros are defined in \src{include/linux/init.h}.
These macros are defined in \src{include/linux/module.h}.
The only requirement is that your init and cleanup functions must be defined before calling the those macros, otherwise you'll get compilation errors.
Here is an example of this technique: