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KVM: Add statistic for remote tlb flushes 

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-11-20 23:01:14 +02:00
parent e5a4c8cad9
commit 0f74a24c59
3 changed files with 5 additions and 0 deletions
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1
drivers/kvm/kvm.h
View File

@ -300,6 +300,7 @@ struct kvm_vm_stat {
u32 mmu_pde_zapped;
u32 mmu_flooded;
u32 mmu_recycled;
u32 remote_tlb_flush;
};
struct kvm {

3
drivers/kvm/kvm_main.c
View File

@ -115,6 +115,9 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
if (cpu != -1 && cpu != raw_smp_processor_id())
cpu_set(cpu, cpus);
}
if (cpus_empty(cpus))
return;
++kvm->stat.remote_tlb_flush;
smp_call_function_mask(cpus, ack_flush, NULL, 1);
}

1
drivers/kvm/x86.c
View File

@ -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) },
{ "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
{ NULL }
};