Re: Module init for compiled in vs loaded modules

["Amol Lad" <amol.lad@xxxxxxxxx>]

Code base of 2.6.18

>
> 1) But where do i look to find how the kernel loads(ie. calls the fn exported by module_init(XXXX)) for modules compiled into the kernel.

linux/init.h:

#ifndef MODULE
...
#define module_init(x)  __initcall(x);
#define __initcall(fn) device_initcall(fn)
#define device_initcall(fn)     __define_initcall("6",fn)
#define __define_initcall(level,fn) \
    static initcall_t __initcall_##fn __attribute_used__ \
    __attribute__((__section__(".initcall" level ".init"))) = fn
...
#endif


So as you can see call to module_init is actually an initcall.

initcalls are processed in do_initcalls function in init/main.c

static void __init do_basic_setup(void)
{
    ....
    do_initcalls();
}

>
> thanks !

Amol

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