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KVM: Add statistics for guest irq injections

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These can help show whether a guest is making progress or not.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2008-09-01 15:57:51 +03:00
parent d40a1ee485
commit fa89a81766
4 changed files with 4 additions and 0 deletions
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1
arch/x86/kvm/svm.c
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@ -1519,6 +1519,7 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
KVMTRACE_1D(INJ_VIRQ, &svm->vcpu, (u32)irq, handler);
++svm->vcpu.stat.irq_injections;
control = &svm->vmcb->control;
control->int_vector = irq;
control->int_ctl &= ~V_INTR_PRIO_MASK;

1
arch/x86/kvm/vmx.c
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@ -2341,6 +2341,7 @@ static void vmx_inject_irq(struct kvm_vcpu *vcpu, int irq)
KVMTRACE_1D(INJ_VIRQ, vcpu, (u32)irq, handler);
++vcpu->stat.irq_injections;
if (vcpu->arch.rmode.active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = irq;

1
arch/x86/kvm/x86.c
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@ -92,6 +92,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "fpu_reload", VCPU_STAT(fpu_reload) },
{ "insn_emulation", VCPU_STAT(insn_emulation) },
{ "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },
{ "irq_injections", VCPU_STAT(irq_injections) },
{ "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) },
{ "mmu_pte_write", VM_STAT(mmu_pte_write) },
{ "mmu_pte_updated", VM_STAT(mmu_pte_updated) },

1
include/asm-x86/kvm_host.h
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@ -413,6 +413,7 @@ struct kvm_vcpu_stat {
u32 insn_emulation;
u32 insn_emulation_fail;
u32 hypercalls;
u32 irq_injections;
};
struct descriptor_table {