start_kernel.h
#ifndef _LINUX_START_KERNEL_H
#define _LINUX_START_KERNEL_H
#include <linux/linkage.h>
#include <linux/init.h>
/* Define the prototype for start_kernel here, rather than cluttering
up something else. */
extern asmlinkage void __init start_kernel(void);
#endif /* _LINUX_START_KERNEL_H */