From 1a040b26c5c915b317103b87ae7006d40443f197 Mon Sep 17 00:00:00 2001 From: Stuart Yoder Date: Mon, 28 Mar 2011 15:01:56 -0500 Subject: KVM: PPC: use ticks, not usecs, for exit timing Convert to microseconds when displaying (with fix from Bharat Bhushan ). This reduces rounding error with large quantities of short exits. Signed-off-by: Stuart Yoder Signed-off-by: Scott Wood Signed-off-by: Alexander Graf --- arch/powerpc/kvm/timing.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kvm/timing.c b/arch/powerpc/kvm/timing.c index 18f40fd3e98..319177df958 100644 --- a/arch/powerpc/kvm/timing.c +++ b/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; } -- cgit v1.2.3