KVM: PPC: use ticks, not usecs, for exit timing

Convert to microseconds when displaying
(with fix from Bharat Bhushan <Bharat.Bhushan@freescale.com>).

This reduces rounding error with large quantities of short exits.

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

arch/powerpc/kvm/timing.c

@@ -151,17 +151,30 @@ static int kvmppc_exit_timing_show(struct seq_file *m, void *private)
 {
 	struct kvm_vcpu *vcpu = m->private;
 	int i;
+	u64 min, max, sum, sum_quad;
 
 	seq_printf(m, "%s", "type	count	min	max	sum	sum_squared\n");
 
+
 	for (i = 0; i < __NUMBER_OF_KVM_EXIT_TYPES; i++) {
+
+		min = vcpu->arch.timing_min_duration[i];
+		do_div(min, tb_ticks_per_usec);
+		max = vcpu->arch.timing_max_duration[i];
+		do_div(max, tb_ticks_per_usec);
+		sum = vcpu->arch.timing_sum_duration[i];
+		do_div(sum, tb_ticks_per_usec);
+		sum_quad = vcpu->arch.timing_sum_quad_duration[i];
+		do_div(sum_quad, tb_ticks_per_usec);
+
 		seq_printf(m, "%12s	%10d	%10lld	%10lld	%20lld	%20lld\n",
 			kvm_exit_names[i],
 			vcpu->arch.timing_count_type[i],
-			vcpu->arch.timing_min_duration[i],
-			vcpu->arch.timing_max_duration[i],
-			vcpu->arch.timing_sum_duration[i],
-			vcpu->arch.timing_sum_quad_duration[i]);
+			min,
+			max,
+			sum,
+			sum_quad);
+
 	}
 	return 0;
 }