[PATCH] KVM: MMU: increment stats after event occurrence

Davidlohr Bueso
2012-01-13T01:08:10Z

From: Davidlohr Bueso <dave@gnu.org>

It makes more sense to actually increment statistics for tlb flushes and page table entry updates after such _events_ occur, instead of before.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
---
arch/x86/kvm/mmu.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 2a2a9b4..0b7008e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3130,8 +3130,8 @@ static int nonpaging_init_context(struct kvm_vcpu *vcpu,

void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu)
{
- ++vcpu->stat.tlb_flush;
kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+ ++vcpu->stat.tlb_flush;
}

static void paging_new_cr3(struct kvm_vcpu *vcpu)
@@ -3486,8 +3486,8 @@ static void mmu_pte_write_new_pte(struct kvm_vcpu *vcpu,
return;
}

- ++vcpu->kvm->stat.mmu_pte_updated;
vcpu->arch.mmu.update_pte(vcpu, sp, spte, new);
+ ++vcpu->kvm->stat.mmu_pte_updated;
}

static bool need_remote_flush(u64 old, u64 new)
--
1.7.4.1