finished the kernel module and documentation

Makefile

@@ -0,0 +1,9 @@
+obj-m += hello.o 
+
+PWD := $(CURDIR) 
+
+all: 
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules 
+
+clean: 
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

README.md

@@ -1,2 +1,14 @@
 # Hello_World_Kernel_Module
 
+## Prerequisits
+  - requires the correct linux headers to be installed
+  - root access is needed
+
+## how to run the kernel module
+  - `make` to build the module
+  - `sudo insmod hello` to run the module
+  - `sudo rmmod hello` to stop the module
+
+## viewing the log
+on systems that run systemd:
+``` journalctl -f -k ```

hello.c

@@ -0,0 +1,28 @@
+/**
+ * @file hello.c
+ * @author Paul Lödige (ploedige@g.ecc.u-tokyo.ac.jp)
+ * @brief prints "Hello World" from the Kernel
+ * @version 0.1
+ * @date 2022-10-17
+ * 
+ * @copyright Copyright (c) 2022
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+static int __init hello_init(void) {
+    printk("Hello World!");
+    return 0;
+}
+
+static void __exit hello_exit(void){
+    printk("Goodbye!");
+}
+
+module_init(hello_init);
+module_exit(hello_exit);
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Hello World Module");
+MODULE_AUTHOR("ploedige");