Need help on basic Linux C++ programming with simple RTAI functions

[project168]

Hello fellow members,

I need help as I am not proficient with Linux C++ Programming. There are two parts which I need to do in the coding provided below.

1. Produce the program so it can output the word "Hey there!" and wait two minute and print the word "See you later!".

2. Produce the program that will output the text "Cool" every 20 seconds by setting a periodic task.

#include <linux/kernel.h>
#include <linux/module.h>
MODULE_LICENSE("GPL");

int init_module(void)
{
printk("Hey there!\n");

return 0;
}

void cleanup_module(void)
{
printk("See you later!\n");

return;
}

[coopstah13]

sounds like a homework question

though i'm curious if this actually needs to be a kernel module? or just a regular application???

[Schmidt]

The Linux Kernel

The Linux Kernel Module Programming Guide

I suppose it will help you )

[project168]

not homework question. its something i couldnt get working.

its kernel stuff

[project168]

its kernel stuff if anyone know how to do it

[Rubberman]

You are missing two macros that inform the kernel which is the init function, and which is the exit function. Try this:

#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE("GPL");

int init_module(void)
{
    printk(KERN_ALERT "Hey there!\n");
    return 0;
}

void cleanup_module(void)
{
    printk(KERN_ALERT "See you later!\n");
}

module_init(init_module);
module_exit(cleanup_module);

[project168]

oh thanks. but what am i missing here?

1. Produce the program so it can output the word "Hey there!" and wait two minute and print the word "See you later!".

2. Produce the program that will output the text "Cool" every 20 seconds by setting a periodic task.

[coopstah13]

i suggest you look at the previous link

i'm treading lightly around this because it still sounds suspiciously like schoolwork/homework

you need to look up what the module_init and module_exit functions are actually doing