#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>

noinline long long bench(long long value, int shift, int divide)
{
	int i;
	unsigned long j;
	unsigned mod = 0;

	j = jiffies;
	for (i = 0; i < 100000000; i++) {
		mod += value & (divide - 1);
		value >>= shift;
		value ^= 0x12345678;
	}
	j = jiffies - j;
	printk("and_shift: %ld\n", j);
	msleep(1000);

	j = jiffies;
	for (i = 0; i < 100000000; i++) {
		mod += do_div(value, divide);
		value ^= 0x12345678;
	}
	j = jiffies - j;
	printk("do_div: %ld\n", j);
	msleep(1000);

	return mod ^ value;
}

static int __init dump_init(void)
{
	bench(123456789, 7, 345);
	return -EIO;
}

static void __exit dump_exit(void)
{
	printk("dump exit\n");
}

module_init(dump_init)
module_exit(dump_exit)
MODULE_LICENSE("GPL");