Commit 8e819d75 authored by Maxim Levitsky's avatar Maxim Levitsky Committed by Paolo Bonzini
Browse files

KVM: x86: add a tracepoint for APICv/AVIC interrupt delivery 



This allows to see how many interrupts were delivered via the
APICv/AVIC from the host.

Signed-off-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20211209115440.394441-3-mlevitsk@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 502d2bf5

arch/x86/kvm/lapic.c

+3 −0
Original line number Diff line number Diff line
@@ -1100,6 +1100,9 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, 
			kvm_lapic_set_irr(vector, apic);

			kvm_make_request(KVM_REQ_EVENT, vcpu);

			kvm_vcpu_kick(vcpu);

		} else {

			trace_kvm_apicv_accept_irq(vcpu->vcpu_id, delivery_mode,

						   trig_mode, vector);

		}

		break;

arch/x86/kvm/trace.h

+24 −0
Original line number Diff line number Diff line
@@ -1356,6 +1356,30 @@ TRACE_EVENT(kvm_apicv_update_request, 
		  __entry->bit)

);



TRACE_EVENT(kvm_apicv_accept_irq,

	    TP_PROTO(__u32 apicid, __u16 dm, __u16 tm, __u8 vec),

	    TP_ARGS(apicid, dm, tm, vec),



	TP_STRUCT__entry(

		__field(	__u32,		apicid		)

		__field(	__u16,		dm		)

		__field(	__u16,		tm		)

		__field(	__u8,		vec		)

	),



	TP_fast_assign(

		__entry->apicid		= apicid;

		__entry->dm		= dm;

		__entry->tm		= tm;

		__entry->vec		= vec;

	),



	TP_printk("apicid %x vec %u (%s|%s)",

		  __entry->apicid, __entry->vec,

		  __print_symbolic((__entry->dm >> 8 & 0x7), kvm_deliver_mode),

		  __entry->tm ? "level" : "edge")

);



/*

 * Tracepoint for AMD AVIC

 */

arch/x86/kvm/x86.c

+1 −0
Original line number Diff line number Diff line
@@ -12693,6 +12693,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access); 
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_ga_log);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_update_request);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_accept_irq);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_enter);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_exit);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_msr_protocol_enter);