MIPS: KVM: Combine entry trace events into class

Combine the kvm_enter, kvm_reenter and kvm_out trace events into a
single kvm_transition event class to reduce duplication and bloat.
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Fixes: 93258604 ("MIPS: KVM: Add guest mode switch trace events")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/mips/kvm/trace.h

@@ -20,7 +20,7 @@
 /*
  * Tracepoints for VM enters
  */
-TRACE_EVENT(kvm_enter,
+DECLARE_EVENT_CLASS(kvm_transition,
 	TP_PROTO(struct kvm_vcpu *vcpu),
 	TP_ARGS(vcpu),
 	TP_STRUCT__entry(
@@ -35,35 +35,17 @@ TRACE_EVENT(kvm_enter,
 		  __entry->pc)
 );
 
-TRACE_EVENT(kvm_reenter,
+DEFINE_EVENT(kvm_transition, kvm_enter,
 	     TP_PROTO(struct kvm_vcpu *vcpu),
-	    TP_ARGS(vcpu),
-	    TP_STRUCT__entry(
-			__field(unsigned long, pc)
-	    ),
-
-	    TP_fast_assign(
-			__entry->pc = vcpu->arch.pc;
-	    ),
-
-	    TP_printk("PC: 0x%08lx",
-		      __entry->pc)
-);
+	     TP_ARGS(vcpu));
 
-TRACE_EVENT(kvm_out,
+DEFINE_EVENT(kvm_transition, kvm_reenter,
 	     TP_PROTO(struct kvm_vcpu *vcpu),
-	    TP_ARGS(vcpu),
-	    TP_STRUCT__entry(
-			__field(unsigned long, pc)
-	    ),
-
-	    TP_fast_assign(
-			__entry->pc = vcpu->arch.pc;
-	    ),
+	     TP_ARGS(vcpu));
 
-	    TP_printk("PC: 0x%08lx",
-		      __entry->pc)
-);
+DEFINE_EVENT(kvm_transition, kvm_out,
+	     TP_PROTO(struct kvm_vcpu *vcpu),
+	     TP_ARGS(vcpu));
 
 /* The first 32 exit reasons correspond to Cause.ExcCode */
 #define KVM_TRACE_EXIT_INT		 0