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[PATCH v2 10/14] KVM: x86: refactor kvm_free_pit

From Radim Krčmář <rkrcmar@redhat.com>
Newsgroups linux.kernel
Subject [PATCH v2 10/14] KVM: x86: refactor kvm_free_pit
Date 2016-02-17 20:20 +0100
Message-ID <r3fNN-2nq-41@gated-at.bofh.it> (permalink)
References <r3fNM-2nq-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Could be easier to read, but git history will become deeper.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---
 v2: new

 arch/x86/kvm/i8254.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 9dd4460033e3..28ad45abf386 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -738,18 +738,16 @@ fail_request:
 
 void kvm_free_pit(struct kvm *kvm)
 {
-	struct hrtimer *timer;
+	struct kvm_pit *pit = kvm->arch.vpit;
 
-	if (kvm->arch.vpit) {
-		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &kvm->arch.vpit->dev);
-		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS,
-					      &kvm->arch.vpit->speaker_dev);
-		kvm_pit_set_reinject(kvm->arch.vpit, false);
-		timer = &kvm->arch.vpit->pit_state.timer;
-		hrtimer_cancel(timer);
-		flush_kthread_work(&kvm->arch.vpit->expired);
-		kthread_stop(kvm->arch.vpit->worker_task);
-		kvm_free_irq_source_id(kvm, kvm->arch.vpit->irq_source_id);
-		kfree(kvm->arch.vpit);
+	if (pit) {
+		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &pit->dev);
+		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &pit->speaker_dev);
+		kvm_pit_set_reinject(pit, false);
+		hrtimer_cancel(&pit->pit_state.timer);
+		flush_kthread_work(&pit->expired);
+		kthread_stop(pit->worker_task);
+		kvm_free_irq_source_id(kvm, pit->irq_source_id);
+		kfree(pit);
 	}
 }
-- 
2.7.1

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Thread

[PATCH v2 00/14] KVM: x86: change PIT discard policy and untangle related code Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 02/14] KVM: x86: simplify atomics in kvm_pit_ack_irq Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
    Re: [PATCH v2 02/14] KVM: x86: simplify atomics in kvm_pit_ack_irq Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:10 +0100
      Re: [PATCH v2 02/14] KVM: x86: simplify atomics in kvm_pit_ack_irq Paolo Bonzini <pbonzini@redhat.com> - 2016-02-19 17:00 +0100
      Re: [PATCH v2 02/14] KVM: x86: simplify atomics in kvm_pit_ack_irq Radim Krčmář <rkrcmar@redhat.com> - 2016-02-19 17:00 +0100
  [PATCH v2 14/14] KVM: x86: move PIT timer function initialization Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 05/14] KVM: x86: tone down WARN_ON pit.state_lock Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 06/14] KVM: x86: pass struct kvm_pit instead of kvm in PIT Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 09/14] KVM: x86: refactor kvm_create_pit Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 04/14] KVM: x86: use atomic_t instead of pit.inject_lock Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 13/14] KVM: x86: don't assume layout of kvm_kpit_state Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
    Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 17:20 +0100
      Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-18 18:00 +0100
        Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 18:40 +0100
          Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:00 +0100
            Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-19 15:50 +0100
    Re: [PATCH v2 01/14] KVM: x86: change PIT discard tick policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:50 +0100
  [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
    Re: [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard  policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:10 +0100
    Re: [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard  policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:10 +0100
      Re: [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard  policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-19 16:10 +0100
        Re: [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard  policy Paolo Bonzini <pbonzini@redhat.com> - 2016-02-19 16:10 +0100
          Re: [PATCH v2 08/14] KVM: x86: remove notifiers from PIT discard  policy Radim Krčmář <rkrcmar@redhat.com> - 2016-02-19 16:10 +0100
  [PATCH v2 10/14] KVM: x86: refactor kvm_free_pit Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 11/14] KVM: x86: remove pit and kvm from kvm_kpit_state Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
  [PATCH v2 07/14] KVM: x86: remove unnecessary uses of PIT state lock Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:20 +0100
    Re: [PATCH v2 07/14] KVM: x86: remove unnecessary uses of PIT state  lock Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:10 +0100
      Re: [PATCH v2 07/14] KVM: x86: remove unnecessary uses of PIT state  lock Radim Krčmář <rkrcmar@redhat.com> - 2016-02-19 15:50 +0100
  [PATCH v2 03/14] KVM: x86: add kvm_pit_reset_reinject Radim Krčmář <rkrcmar@redhat.com> - 2016-02-17 20:30 +0100
  Re: [PATCH v2 00/14] KVM: x86: change PIT discard policy and untangle  related code Paolo Bonzini <pbonzini@redhat.com> - 2016-02-18 19:20 +0100

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