1. 根目录:
2. arch
3. unicore32
4. kernel
5. init_task.c

/*
 * linux/arch/unicore32/kernel/init_task.c
 *
 * Code specific to PKUnity SoC and UniCore ISA
 *
 * Copyright (C) 2001-2010 GUAN Xue-tao
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/init_task.h>
#include <linux/mqueue.h>
#include <linux/uaccess.h>

#include <asm/pgtable.h>

static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
/*
 * Initial thread structure.
 *
 * We need to make sure that this is 8192-byte aligned due to the
 * way process stacks are handled. This is done by making sure
 * the linker maps this in the .text segment right after head.S,
 * and making head.S ensure the proper alignment.
 *
 * The things we do for performance..
 */
union thread_union init_thread_union __init_task_data = {
	INIT_THREAD_INFO(init_task) };

/*
 * Initial task structure.
 *
 * All other task structs will be allocated on slabs in fork.c
 */
struct task_struct init_task = INIT_TASK(init_task);
EXPORT_SYMBOL(init_task);