KVM: Replace 'light_exits' stat with 'host_state_reload'
This is a little more accurate (since it counts actual reloads, not potential
reloads), and reverses the sense of the statistic to measure a bad event like
most of the other stats (e.g. we want to minimize all counters).
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 59e001c..04efe88 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -246,7 +246,7 @@
u32 halt_wakeup;
u32 request_irq_exits;
u32 irq_exits;
- u32 light_exits;
+ u32 host_state_reload;
u32 efer_reload;
};
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index a1a7f39..0d32304 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -654,6 +654,7 @@
struct vcpu_svm *svm = to_svm(vcpu);
int i;
+ ++vcpu->stat.host_state_reload;
for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 84c77fe..7130f31 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -463,6 +463,7 @@
if (!vmx->host_state.loaded)
return;
+ ++vmx->vcpu.stat.host_state_reload;
vmx->host_state.loaded = 0;
if (vmx->host_state.fs_reload_needed)
load_fs(vmx->host_state.fs_sel);
diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c
index b7c72ac..923dfd4 100644
--- a/drivers/kvm/x86.c
+++ b/drivers/kvm/x86.c
@@ -60,7 +60,7 @@
{ "halt_wakeup", STAT_OFFSET(halt_wakeup) },
{ "request_irq", STAT_OFFSET(request_irq_exits) },
{ "irq_exits", STAT_OFFSET(irq_exits) },
- { "light_exits", STAT_OFFSET(light_exits) },
+ { "host_state_reload", STAT_OFFSET(host_state_reload) },
{ "efer_reload", STAT_OFFSET(efer_reload) },
{ NULL }
};
@@ -1988,10 +1988,8 @@
++vcpu->stat.request_irq_exits;
goto out;
}
- if (!need_resched()) {
- ++vcpu->stat.light_exits;
+ if (!need_resched())
goto again;
- }
}
out: