KVM: SVM: Add tracepoint for #vmexit because intr pending

This patch adds a special tracepoint for the event that a
nested #vmexit is injected because kvm wants to inject an
interrupt into the guest.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 369eeb8..78a391c 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1390,7 +1390,7 @@
 		 * the #vmexit here.
 		 */
 		svm->nested.exit_required = true;
-		nsvm_printk("VMexit -> INTR\n");
+		trace_kvm_nested_intr_vmexit(svm->vmcb->save.rip);
 		return 1;
 	}