!12694 crypto: xor - fix template benchmarking

do_xor_speed(struct xor_block_template *tmpl, void *b1, void *b2)

{

	int speed;

	int i, j;

	ktime_t min, start, diff;

	unsigned long reps;

	ktime_t min, start, t0;

	tmpl->next = template_list;

	template_list = tmpl;

	preempt_disable();

	min = (ktime_t)S64_MAX;

	for (i = 0; i < 3; i++) {

		start = ktime_get();

		for (j = 0; j < REPS; j++) {

			mb(); /* prevent loop optimzation */

	reps = 0;

	t0 = ktime_get();

	/* delay start until time has advanced */

	while ((start = ktime_get()) == t0)

		cpu_relax();

	do {

		mb(); /* prevent loop optimization */

		tmpl->do_2(BENCH_SIZE, b1, b2);

		mb();

		}

		diff = ktime_sub(ktime_get(), start);

		if (diff < min)

			min = diff;

	}

	} while (reps++ < REPS || (t0 = ktime_get()) == start);

	min = ktime_sub(t0, start);

	preempt_enable();

	// bytes/ns == GB/s, multiply by 1000 to get MB/s [not MiB/s]

	if (!min)

		min = 1;

	speed = (1000 * REPS * BENCH_SIZE) / (unsigned int)ktime_to_ns(min);

	speed = (1000 * reps * BENCH_SIZE) / (unsigned int)ktime_to_ns(min);

	tmpl->speed = speed;

	pr_info("   %-16s: %5d MB/sec\n", tmpl->name, speed);