KVM: Per-vcpu statistics
Make the exit statistics per-vcpu instead of global. This gives a 3.5%
boost when running one virtual machine per core on my two socket dual core
(4 cores total) machine.
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 61ed735..644efc5 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -914,7 +914,7 @@
case EMULATE_DONE:
return 1;
case EMULATE_DO_MMIO:
- ++kvm_stat.mmio_exits;
+ ++vcpu->stat.mmio_exits;
kvm_run->exit_reason = KVM_EXIT_MMIO;
return 0;
case EMULATE_FAIL:
@@ -1054,7 +1054,7 @@
unsigned long count;
gva_t address = 0;
- ++kvm_stat.io_exits;
+ ++vcpu->stat.io_exits;
vcpu->svm->next_rip = vcpu->svm->vmcb->control.exit_info_2;
@@ -1096,7 +1096,7 @@
return 1;
kvm_run->exit_reason = KVM_EXIT_HLT;
- ++kvm_stat.halt_exits;
+ ++vcpu->stat.halt_exits;
return 0;
}
@@ -1264,7 +1264,7 @@
*/
if (kvm_run->request_interrupt_window &&
!vcpu->irq_summary) {
- ++kvm_stat.irq_window_exits;
+ ++vcpu->stat.irq_window_exits;
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
}
@@ -1636,14 +1636,14 @@
r = handle_exit(vcpu, kvm_run);
if (r > 0) {
if (signal_pending(current)) {
- ++kvm_stat.signal_exits;
+ ++vcpu->stat.signal_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
}
if (dm_request_for_irq_injection(vcpu, kvm_run)) {
- ++kvm_stat.request_irq_exits;
+ ++vcpu->stat.request_irq_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
@@ -1672,7 +1672,7 @@
{
uint32_t exit_int_info = vcpu->svm->vmcb->control.exit_int_info;
- ++kvm_stat.pf_guest;
+ ++vcpu->stat.pf_guest;
if (is_page_fault(exit_int_info)) {