2014-12-16 09:08-0500, Marcelo Tosatti: > Add tracepoint to wait_lapic_expire. > > Signed-off-by: Marcelo Tosatti <[email protected]>
Reviewed-by: Radim Krčmář <[email protected]> > +++ kvm/arch/x86/kvm/lapic.c > @@ -1120,7 +1120,7 @@ static bool lapic_timer_int_injected(str > void wait_lapic_expire(struct kvm_vcpu *vcpu) > { > struct kvm_lapic *apic = vcpu->arch.apic; > - u64 guest_tsc, tsc_deadline; > + u64 orig_guest_tsc, guest_tsc, tsc_deadline; > > if (!kvm_vcpu_has_lapic(vcpu)) > return; > @@ -1133,7 +1133,7 @@ void wait_lapic_expire(struct kvm_vcpu * > > tsc_deadline = apic->lapic_timer.expired_tscdeadline; > apic->lapic_timer.expired_tscdeadline = 0; > - guest_tsc = kvm_x86_ops->read_l1_tsc(vcpu, native_read_tsc()); > + orig_guest_tsc = guest_tsc = kvm_x86_ops->read_l1_tsc(vcpu, > native_read_tsc()); (We could move the tracepoint here and save orig_guest_tsc.) > while (guest_tsc < tsc_deadline) { > int delay = min(tsc_deadline - guest_tsc, 1000ULL); > @@ -1141,6 +1141,8 @@ void wait_lapic_expire(struct kvm_vcpu * > __delay(delay); > guest_tsc = kvm_x86_ops->read_l1_tsc(vcpu, native_read_tsc()); > } > + > + trace_kvm_wait_lapic_expire(vcpu->vcpu_id, orig_guest_tsc - > tsc_deadline); > } > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
