#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/cpufreq.h>

static int __init delaytest_init(void)
{
   long old_jiffies;
   cycles_t t1, t2;
   int freq=cpufreq_get(0)/1000; // in msec

   t1=get_cycles();
   old_jiffies = jiffies;
   udelay(1000); // Kurzes Warten
   t2=get_cycles();
   printk(" 1000ms:  diff-jiffies: %2.2ld - (%ld)\n",
	   jiffies-old_jiffies, (unsigned long)(t2-t1)/freq);
   old_jiffies = jiffies;
   t1 = t2;
   udelay(20000); // Langes Warten
   t2=get_cycles();
   printk("20000ms:  diff-jiffies: %2.2ld - (%ld)\n",
	   jiffies-old_jiffies, (unsigned long)(t2-t1)/freq);
   return -EIO; // Nur ein Test: Das erspart uns das Entladen.
}

module_init( delaytest_init );
MODULE_LICENSE("GPL");