/*
 * timers.stp
 *
 * Test the functionality of the various timer.* probes.
 */

global p
global j1, j2, jmax
global ms1, ms500, msmax

probe begin
{
	log("systemtap starting probe")
}

probe timer.profile { ++p }

probe timer.jiffies(1) { ++j1 }
probe timer.jiffies(2) { ++j2 }
probe timer.jiffies(1000000) { ++jmax }

/* as long as HZ>2, ms(1) and ms(500) 
 * will produce different counts */
probe timer.ms(1) { ++ms1 }
probe timer.ms(500) { ++ms500 }
probe timer.ms(1000000) { ++msmax }

probe end
{
	log("systemtap ending probe")
	log("p = " . sprint(p))
	log("j1 = " . sprint(j1))
	log("j2 = " . sprint(j2))
	log("jmax = " . sprint(jmax))
	log("ms1 = " . sprint(ms1))
	log("ms500 = " . sprint(ms500))
	log("msmax = " . sprint(msmax))

	/* profile counter should be non-zero, and at
	 * least as many as the jiffies(1) counter */
	if ((p > 0) && (p >= j1)) {
		log("systemtap test success")
	} else {
		log("unexpected profile count")
		log("systemtap test failure");
	}

	/* jiffies(1) should count more than jiffies(2),
	 * and both should be non-zero. */
	if ((j2 > 0) && (j2 < j1)) {
		log("systemtap test success")
	} else {
		log("unexpected jiffies count")
		log("systemtap test failure");
	}

	/* ms(1) should count more than ms(500),
	 * and both should be non-zero. */
	if ((ms500 > 0) && (ms500 < ms1)) {
		log("systemtap test success")
	} else {
		log("unexpected ms count")
		log("systemtap test failure");
	}

	/* both 'infinite' intervals should register zero counts */
	if ((jmax == 0) && (msmax == 0)) {
		log("systemtap test success")
	} else {
		log("unexpected count on 'infinite' interval")
		log("systemtap test failure");
	}
}