linux-kernel - [PATCH] kvm: svm: count all irq windows exit

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Date:	Thu, 08 Mar 2012 18:07:56 +0800
From:	Jason Wang <jasowang@...hat.com>
To:	joerg.roedel@....com, mtosatti@...hat.com, avi@...hat.com,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] kvm: svm: count all irq windows exit

Also count the exits of fast-path.

Signed-off-by: Jason Wang <jasowang@...hat.com>
---
 arch/x86/kvm/svm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 53efd59..5ef7233 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3235,6 +3235,7 @@ static int interrupt_window_interception(struct vcpu_svm *svm)
 	svm_clear_vintr(svm);
 	svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;
 	mark_dirty(svm->vmcb, VMCB_INTR);
+	++svm->vcpu.stat.irq_window_exits;
 	/*
 	 * If the user space waits to inject interrupts, exit as soon as
 	 * possible
@@ -3242,7 +3243,6 @@ static int interrupt_window_interception(struct vcpu_svm *svm)
 	if (!irqchip_in_kernel(svm->vcpu.kvm) &&
 	    kvm_run->request_interrupt_window &&
 	    !kvm_cpu_has_interrupt(&svm->vcpu)) {
-		++svm->vcpu.stat.irq_window_exits;
 		kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
 		return 0;
 	}

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