[lttv.git] / tests / kernel / test-hpet.c

/* test-async-tsc.c
 *
 * test async tsc on AMD.
 */


#include <asm/atomic.h>
#include <linux/module.h>
#include <asm/timex.h>
#include <asm/hpet.h>
#include <asm/io.h>

static int __init test_init(void)
{
	int i;
	cycles_t time1, time2;
	volatile unsigned long myval;

	time1 = get_cycles();
	for (i=0; i<1; i++) {
		//printk("time %llu\n", ltt_tsc_read());
		//myval = ltt_tsc_read();
		myval = hpet_readl(HPET_COUNTER);
	}
	time2 = get_cycles();
	printk("timediff %llu\n", time2-time1);
	return -EPERM;
}

static void __exit test_exit(void)
{
}

module_init(test_init);
module_exit(test_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mathieu Desnoyers");
MODULE_DESCRIPTION("sync async tsc");
Commit	Line	Data
c6a191ef	1	/* test-async-tsc.c
	2	*
	3	* test async tsc on AMD.
	4	*/
	5
	6
	7	#include <asm/atomic.h>
	8	#include <linux/module.h>
	9	#include <asm/timex.h>
	10	#include <asm/hpet.h>
	11	#include <asm/io.h>
	12
	13	static int __init test_init(void)
	14	{
	15	int i;
	16	cycles_t time1, time2;
	17	volatile unsigned long myval;
	18
	19	time1 = get_cycles();
	20	for (i=0; i<1; i++) {
	21	//printk("time %llu\n", ltt_tsc_read());
	22	//myval = ltt_tsc_read();
	23	myval = hpet_readl(HPET_COUNTER);
	24	}
	25	time2 = get_cycles();
	26	printk("timediff %llu\n", time2-time1);
	27	return -EPERM;
	28	}
	29
	30	static void __exit test_exit(void)
	31	{
	32	}
	33
	34	module_init(test_init);
	35	module_exit(test_exit);
	36
	37	MODULE_LICENSE("GPL");
	38	MODULE_AUTHOR("Mathieu Desnoyers");
	39	MODULE_DESCRIPTION("sync async tsc");
	40