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/* https://github.com/cirosantilli/linux-kernel-module-cheat#timers */

#include <linux/jiffies.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/timer.h>

static int i;

/* We would normally mark this as static and give it a more generic name.

* But let's do it like this this time for the sake of our GDB kernel module step debugging example. */

void lkmc_timer_callback(struct timer_list *data);

static unsigned long onesec;

DEFINE_TIMER(mytimer, lkmc_timer_callback);

void lkmc_timer_callback(struct timer_list *data)

{

pr_info("%d\n", i);

i++;

if (i == 10)

i = 0;

mod_timer(&mytimer, jiffies + onesec);

}

static int myinit(void)

{

onesec = msecs_to_jiffies(1000);

mod_timer(&mytimer, jiffies + onesec);

return 0;

}

static void myexit(void)

{

del_timer(&mytimer);

}

module_init(myinit)

module_exit(myexit)

MODULE_LICENSE("GPL");