/* * Written by Der Herr Hofrat, der.herr@hofr.at * (C) 2002 FSMLabs * License: GPL Version 2 */#include <rtl.h>#include <time.h>#include <rtl_debug.h>#include <errno.h>#include <pthread.h>#include "hello.h"#include <fcntl.h>#include <unistd.h>#include <sys/mman.h>pthread_t thread;extern void * start_routine(void *arg);struct shared_mem_struct* shared_mem;int memfd;int init_module(void) {	int ret;	memfd = open("/dev/mem", O_RDWR);	if (memfd){		shared_mem = (struct shared_mem_struct*) mmap(0,	  		sizeof(struct shared_mem_struct),	  		PROT_READ | PROT_WRITE, 			MAP_FILE | MAP_SHARED, 			memfd, 			MEMORY_OFFSET);		if(shared_mem != NULL){  				printk("Dev mem available\n");		}		else{			printk("Failed to map memory\n");			close (memfd);			return -1;		}	}	else{		printk("Failed to open memory device file\n");		return -1;	}	ret=pthread_create (&thread, NULL, start_routine, 0);	return ret;}void cleanup_module(void) {	pthread_delete_np (thread);	close(memfd);}