lkml.org 
[lkml]   [2018]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 16/16] KVM: arm/arm64: vgic: Replace spin_is_locked() with lockdep
On Fri, Nov 02, 2018 at 07:45:33PM +0100, Christoffer Dall wrote:
> On Tue, Oct 02, 2018 at 10:39:02PM -0700, Lance Roy wrote:
> > lockdep_assert_held() is better suited to checking locking requirements,
> > since it won't get confused when someone else holds the lock. This is
> > also a step towards possibly removing spin_is_locked().
> >
> > Signed-off-by: Lance Roy <ldr709@gmail.com>
> > Cc: Christoffer Dall <christoffer.dall@arm.com>
> > Cc: Marc Zyngier <marc.zyngier@arm.com>
> > Cc: Eric Auger <eric.auger@redhat.com>
> > Cc: linux-arm-kernel@lists.infradead.org
> > Cc: <kvmarm@lists.cs.columbia.edu>
>
> Acked-by: Christoffer Dall <christoffer.dall@arm.com>

Applied, thank you!

Thanx, Paul

> > ---
> > virt/kvm/arm/vgic/vgic.c | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
> > index 7cfdfbc910e0..50e25438fb3c 100644
> > --- a/virt/kvm/arm/vgic/vgic.c
> > +++ b/virt/kvm/arm/vgic/vgic.c
> > @@ -196,7 +196,7 @@ void vgic_irq_set_phys_active(struct vgic_irq *irq, bool active)
> > */
> > static struct kvm_vcpu *vgic_target_oracle(struct vgic_irq *irq)
> > {
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&irq->irq_lock));
> > + lockdep_assert_held(&irq->irq_lock);
> >
> > /* If the interrupt is active, it must stay on the current vcpu */
> > if (irq->active)
> > @@ -273,7 +273,7 @@ static void vgic_sort_ap_list(struct kvm_vcpu *vcpu)
> > {
> > struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
> >
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&vgic_cpu->ap_list_lock));
> > + lockdep_assert_held(&vgic_cpu->ap_list_lock);
> >
> > list_sort(NULL, &vgic_cpu->ap_list_head, vgic_irq_cmp);
> > }
> > @@ -311,7 +311,7 @@ bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq,
> > {
> > struct kvm_vcpu *vcpu;
> >
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&irq->irq_lock));
> > + lockdep_assert_held(&irq->irq_lock);
> >
> > retry:
> > vcpu = vgic_target_oracle(irq);
> > @@ -702,7 +702,7 @@ static inline void vgic_fold_lr_state(struct kvm_vcpu *vcpu)
> > static inline void vgic_populate_lr(struct kvm_vcpu *vcpu,
> > struct vgic_irq *irq, int lr)
> > {
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&irq->irq_lock));
> > + lockdep_assert_held(&irq->irq_lock);
> >
> > if (kvm_vgic_global_state.type == VGIC_V2)
> > vgic_v2_populate_lr(vcpu, irq, lr);
> > @@ -736,7 +736,7 @@ static int compute_ap_list_depth(struct kvm_vcpu *vcpu,
> >
> > *multi_sgi = false;
> >
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&vgic_cpu->ap_list_lock));
> > + lockdep_assert_held(&vgic_cpu->ap_list_lock);
> >
> > list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {
> > int w;
> > @@ -761,7 +761,7 @@ static void vgic_flush_lr_state(struct kvm_vcpu *vcpu)
> > bool multi_sgi;
> > u8 prio = 0xff;
> >
> > - DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&vgic_cpu->ap_list_lock));
> > + lockdep_assert_held(&vgic_cpu->ap_list_lock);
> >
> > count = compute_ap_list_depth(vcpu, &multi_sgi);
> > if (count > kvm_vgic_global_state.nr_lr || multi_sgi)
> > --
> > 2.19.0
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

\
 
 \ /
  Last update: 2018-11-02 20:42    [W:0.046 / U:5.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site