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>
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@ -246,7 +246,7 @@ struct kvm_stat {
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u32 halt_wakeup;
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u32 request_irq_exits;
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u32 irq_exits;
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u32 light_exits;
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u32 host_state_reload;
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u32 efer_reload;
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};
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@ -654,6 +654,7 @@ static void svm_vcpu_put(struct kvm_vcpu *vcpu)
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struct vcpu_svm *svm = to_svm(vcpu);
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int i;
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++vcpu->stat.host_state_reload;
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for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
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wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
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@ -463,6 +463,7 @@ static void vmx_load_host_state(struct vcpu_vmx *vmx)
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if (!vmx->host_state.loaded)
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return;
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++vmx->vcpu.stat.host_state_reload;
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vmx->host_state.loaded = 0;
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if (vmx->host_state.fs_reload_needed)
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load_fs(vmx->host_state.fs_sel);
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@ -60,7 +60,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
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{ "halt_wakeup", STAT_OFFSET(halt_wakeup) },
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{ "request_irq", STAT_OFFSET(request_irq_exits) },
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{ "irq_exits", STAT_OFFSET(irq_exits) },
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{ "light_exits", STAT_OFFSET(light_exits) },
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{ "host_state_reload", STAT_OFFSET(host_state_reload) },
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{ "efer_reload", STAT_OFFSET(efer_reload) },
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{ NULL }
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};
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@ -1988,11 +1988,9 @@ again:
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++vcpu->stat.request_irq_exits;
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goto out;
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}
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if (!need_resched()) {
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++vcpu->stat.light_exits;
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if (!need_resched())
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goto again;
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}
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}
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out:
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if (r > 0) {
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