Hi all!
I have a question about when and where sock_init() excutes in linux-2.6.35.4.
As I know, when in the old version such as linux-2.6.16, it looks like as fllow:
start_kernel->rest_init->kernel_thread(init)
init->do_basic_setup->sock_init
But now in linux-2.6.35.4, sock_init has gone when do_basic_setup excutes.
I notice the some information in linux-2.6.35.4
/linux-2.6.35.4/include/init/init.h
#define __define_initcall(level,fn,id) \
static initcall_t __initcall_##fn##id __used \
__attribute__((__section__(".initcall" level ".init"))) = fn
#define core_initcall(fn) __define_initcall("1",fn,1)
/linux-2.6.35.4/net/socket.c
core_initcall(sock_init); /* early initcall */
/linux-2.6.35.4/init/main.c
static void __init do_initcalls(void)
{
initcall_t *fn;
for (fn = __early_initcall_end; fn < __initcall_end; fn++)
do_one_initcall(*fn);
/* Make sure there is no pending stuff from the initcall sequence */
flush_scheduled_work();
}
when in linux-2.6.18/arch/i386/kernel/vmlinux.lds.S
.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
*(.initcall1.init)
*(.initcall2.init)
*(.initcall3.init)
*(.initcall4.init)
*(.initcall5.init)
*(.initcall6.init)
*(.initcall7.init)
}
__initcall_end = .;
now in linux-2.6.35.4/arch/, there is no i386/, so i reached to x86/kernel/vmlinux.lds.S
but in this file, i found no information about section .initcall1.init ~ .initcall7.init
So i confused when and where sock_init() excutes in linux-2.6.35.4
Any reply is welcome. Thanks and have a nice day!
Best Wishes!
2010-09-13
huangqiang.zhou
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