kvm: x86: Add APICv (de)activate request trace points

Add trace points when sending request to (de)activate APICv.
Suggested-by: Alexander Graf <graf@amazon.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/trace.h

@@ -1291,6 +1291,25 @@ TRACE_EVENT(kvm_hv_stimer_cleanup,
 		  __entry->vcpu_id, __entry->timer_index)
 );
 
+TRACE_EVENT(kvm_apicv_update_request,
+	    TP_PROTO(bool activate, unsigned long bit),
+	    TP_ARGS(activate, bit),
+
+	TP_STRUCT__entry(
+		__field(bool, activate)
+		__field(unsigned long, bit)
+	),
+
+	TP_fast_assign(
+		__entry->activate = activate;
+		__entry->bit = bit;
+	),
+
+	TP_printk("%s bit=%lu",
+		  __entry->activate ? "activate" : "deactivate",
+		  __entry->bit)
+);
+
 /*
  * Tracepoint for AMD AVIC
  */

arch/x86/kvm/x86.c

@@ -8044,6 +8044,7 @@ void kvm_request_apicv_update(struct kvm *kvm, bool activate, ulong bit)
 			return;
 	}
 
+	trace_kvm_apicv_update_request(activate, bit);
 	kvm_make_all_cpus_request(kvm, KVM_REQ_APICV_UPDATE);
 }
 EXPORT_SYMBOL_GPL(kvm_request_apicv_update);
@@ -10503,3 +10504,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pml_full);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pi_irte_update);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi);
+EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_update_request);