dynamic timers

[raja <vnagaraju@xxxxxxxxxxxx>]

Hi,
   I am writing a module that runs a dynamic timer.In the init function 
i defined a timer and given 'expires'  as jiffies+3000
when i insert the module into the kernel the system is hanging and mouse 
is also hanging.
the code is as follows.

> #ifndef __KERNEL__
>     #define __KERNEL__
> #endif
>
> #ifndef MODULE
>     #define MODULE
> #endif
>
> #include <linux/init.h>
> #include <linux/module.h>
> #include <linux/kernel.h>
> #include <linux/timer.h>
> #include <linux/jiffies.h>
>
> MODULE_AUTHOR("RAJA");
> MODULE_DESCRIPTION("TIMER_1");
> MODULE_LICENSE("GPL");
>
> static int __init init_timer1(void);
> static void __exit exit_timer1(void);
>
> void timer_func(unsigned long data)
> {
>     printk("Hello! Timer Has Expired\n");
> }
>
> static int __init init_timer1()
> {
>     printk("Entered Into Init Function\n");
>     struct timer_list my_timer;
>     init_timer(&my_timer);
>     my_timer.expires = (jiffies + 3000);
>     my_timer.data = 0;
>     my_timer.function = timer_func;
>     add_timer(&my_timer);
>     return 0;
> }
>
> static void __exit exit_timer1()
> {
>     printk("Entered Into Exit Function\n");
> }
>
> module_init(init_timer1);
> module_exit(exit_timer1);

will you please help me what is wrong with it?


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