kernel-misc

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 __init and __exit attributes

__init and __exit are kernel macros, defined in include/linux/init.h, as

shown here:

#define __init

#define __exit

__section(.init.text)

__section(.exit.text)


__init and __exit are Linux directives (macros) that wrap GNU C compiler attributes used for symbol placement. They instruct the compiler to put the code they prefix in the .init.text and .exit.text sections.

This applies only to built-in modules, not to loadable ones



A kernel module uses its .modinfo section to store information about the module. Any MODULE_* macro will update the content of this section with the values passed as 

parameters.


You can dump the content of the .modeinfo section of a kernel module using the

objdump -d -j .modinfo

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