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KVM: MMU: Add cache miss statistic 

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-12-18 19:47:18 +02:00
parent caa5b8a5ed
commit dfc5aa00cb
3 changed files with 3 additions and 0 deletions
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1
arch/x86/kvm/mmu.c
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@ -715,6 +715,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
pgprintk("%s: found\n", __FUNCTION__);
return sp;
}
++vcpu->kvm->stat.mmu_cache_miss;
sp = kvm_mmu_alloc_page(vcpu, parent_pte);
if (!sp)
return sp;

1
arch/x86/kvm/x86.c
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@ -73,6 +73,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) },
{ "mmu_flooded", VM_STAT(mmu_flooded) },
{ "mmu_recycled", VM_STAT(mmu_recycled) },
{ "mmu_cache_miss", VM_STAT(mmu_cache_miss) },
{ "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
{ NULL }
};

1
include/asm-x86/kvm_host.h
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@ -289,6 +289,7 @@ struct kvm_vm_stat {
u32 mmu_pde_zapped;
u32 mmu_flooded;
u32 mmu_recycled;
u32 mmu_cache_miss;
u32 remote_tlb_flush;
};