KVM: Move kvm_exit tracepoint rip reading inside tracepoint

Reading rip is expensive on vmx, so move it inside the tracepoint so we only
incur the cost if tracing is enabled.

Signed-off-by: Avi Kivity <avi@redhat.com>

3 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 490bec199887..abbc3f9d03b2 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2686,7 +2686,7 @@ static int handle_exit(struct kvm_vcpu *vcpu)
         struct kvm_run *kvm_run = vcpu->run;
         u32 exit_code = svm->vmcb->control.exit_code;
 
-        trace_kvm_exit(exit_code, svm->vmcb->save.rip);
+        trace_kvm_exit(exit_code, vcpu);
 
         if (unlikely(svm->nested.exit_required)) {
                 nested_svm_vmexit(svm);
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index b75efef79e56..d10b359a21f3 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -182,8 +182,8 @@ TRACE_EVENT(kvm_apic,
  * Tracepoint for kvm guest exit:
  */
 TRACE_EVENT(kvm_exit,
-        TP_PROTO(unsigned int exit_reason, unsigned long guest_rip),
-        TP_ARGS(exit_reason, guest_rip),
+        TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu),
+        TP_ARGS(exit_reason, vcpu),
 
         TP_STRUCT__entry(
                 __field(        unsigned int,   exit_reason     )
@@ -192,7 +192,7 @@ TRACE_EVENT(kvm_exit,
 
         TP_fast_assign(
                 __entry->exit_reason    = exit_reason;
-                __entry->guest_rip      = guest_rip;
+                __entry->guest_rip      = kvm_rip_read(vcpu);
         ),
 
         TP_printk("reason %s rip 0x%lx",
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 8e2a24693be9..3dbfc20824b7 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3612,7 +3612,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
         u32 exit_reason = vmx->exit_reason;
         u32 vectoring_info = vmx->idt_vectoring_info;
 
-        trace_kvm_exit(exit_reason, kvm_rip_read(vcpu));
+        trace_kvm_exit(exit_reason, vcpu);
 
         /* If guest state is invalid, start emulating */
         if (vmx->emulation_required && emulate_invalid_guest_state)