From mboxrd@z Thu Jan  1 00:00:00 1970
From: tobias@gambas-buch.de (Tobias Boege)
Date: Sun, 17 Mar 2013 16:11:54 +0100
Subject: do_initcalls
In-Reply-To: <20130317144118.GA3086@debian.localdomain>
References: <20130317144118.GA3086@debian.localdomain>
Message-ID: <20130317151154.GC1280@aurora>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Sun, 17 Mar 2013, ishare wrote:
> 
>  for (call = &__initcall_start; call < &__initcall_end; call++)
>    (*call)();
> 
>  I want to know where are these  function point assigned by specified function ?
> 
>  thanks!

As per include/asm-generic/vmlinux.lds.h and your arch's vmlinux.lds.S (I
actually only looked at x86's), the __initcall_{start,end} variables are the
start and end of the __initcall ELF section which contains all the sub-level
sections.

Functions can be put into these sections when they are given to one
of the *_initcall macros from include/linux/init.h.

Regards,
Tobi