init_task.c

linux-2.6.15.6

/* 
 * Copyright (C) 2000 Jeff Dike ([e-mail])
 * Licensed under the GPL
 */

#include "linux/config.h"
#include "linux/mm.h"
#include "linux/module.h"
#include "linux/sched.h"
#include "linux/init_task.h"
#include "linux/mqueue.h"
#include "asm/uaccess.h"
#include "asm/pgtable.h"
#include "user_util.h"
#include "mem_user.h"
#include "os.h"

static struct fs_struct init_fs = INIT_FS;
struct mm_struct init_mm = INIT_MM(init_mm);
static struct files_struct init_files = INIT_FILES;
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
EXPORT_SYMBOL(init_mm);

/*
 * 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);

/*
 * Initial thread structure.
 *
 * We need to make sure that this is 16384-byte aligned due to the
 * way process stacks are handled. This is done by having a special
 * "init_task" linker map entry..
 */

union thread_union init_thread_union 
__attribute__((__section__(".data.init_task"))) = 
{ INIT_THREAD_INFO(init_task) };

void unprotect_stack(unsigned long stack)
{
	os_protect_memory((void *) stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE,
		       1, 1, 0);
}

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-file-style: "linux"
 * End:
 */