diff options
| author | Avi Kivity <avi@redhat.com> | 2010-03-11 10:50:44 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 12:15:25 +0300 |
| commit | 5bfd8b5455e69b37af16a2df1edae2c3b567648c (patch) | |
| tree | 2b7ccd08791b327f27ec340687eadd82980873d6 /arch | |
| parent | d4f64b6cad0fc0fb4cec868c6ca6b1325949d08b (diff) | |
| download | linux-stable-5bfd8b5455e69b37af16a2df1edae2c3b567648c.tar.gz linux-stable-5bfd8b5455e69b37af16a2df1edae2c3b567648c.tar.bz2 linux-stable-5bfd8b5455e69b37af16a2df1edae2c3b567648c.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/trace.h | 6 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
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) |