1 /* 2 * This is where we statically allocate and initialize the initial 3 * task. 4 * 5 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co 6 * David Mosberger-Tang <davidm@hpl.hp.com> 7 */ 8 9 #include <linux/init.h> 10 #include <linux/mm.h> 11 #include <linux/fs.h> 12 #include <linux/module.h> 13 #include <linux/sched.h> 14 #include <linux/init_task.h> 15 #include <linux/mqueue.h> 16 17 #include <asm/uaccess.h> 18 #include <asm/pgtable.h> 19 20 static struct signal_struct init_signals = INIT_SIGNALS(init_signals); 21 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); 22 /* 23 * Initial task structure. 24 * 25 * We need to make sure that this is properly aligned due to the way process stacks are 26 * handled. This is done by having a special ".data..init_task" section... 27 */ 28 #define init_thread_info init_task_mem.s.thread_info 29 #define init_stack init_task_mem.stack 30 31 union { 32 struct { 33 struct task_struct task; 34 struct thread_info thread_info; 35 } s; 36 unsigned long stack[KERNEL_STACK_SIZE/sizeof (unsigned long)]; 37 } init_task_mem asm ("init_task") __init_task_data = 38 {{ 39 .task = INIT_TASK(init_task_mem.s.task), 40 .thread_info = INIT_THREAD_INFO(init_task_mem.s.task) 41 }}; 42 43 EXPORT_SYMBOL(init_task); 44