1 /* 2 * Init task definition 3 * 4 * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 and 8 * only version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA. 19 */ 20 21 #include <linux/mm.h> 22 #include <linux/module.h> 23 #include <linux/sched.h> 24 #include <linux/init_task.h> 25 #include <linux/fs.h> 26 #include <linux/mqueue.h> 27 #include <asm/thread_info.h> 28 #include <asm/uaccess.h> 29 #include <asm/pgtable.h> 30 31 static struct signal_struct init_signals = INIT_SIGNALS(init_signals); 32 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); 33 34 /* 35 * Initial thread structure. 36 * 37 * We need to make sure that this is 8192-byte aligned due to the 38 * way process stacks are handled. This is done by making sure 39 * the linker maps this in the .text segment right after head.S, 40 * and making head.S ensure the proper alignment. 41 */ 42 union thread_union init_thread_union 43 __attribute__((__section__(".data.init_task"), 44 __aligned__(THREAD_SIZE))) = { 45 INIT_THREAD_INFO(init_task) 46 }; 47 48 /* 49 * Initial task structure. 50 * 51 * All other task structs will be allocated on slabs in fork.c 52 */ 53 struct task_struct init_task = INIT_TASK(init_task); 54 EXPORT_SYMBOL(init_task); 55