Il 16/01/2014 13:44, Christian Borntraeger ha scritto:
> +DEFINE_STATIC_SRCU(irq_srcu);
> +
> bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
> {
> struct kvm_irq_ack_notifier *kian;
> - int gsi;
> + int gsi, idx;
>
> - rcu_read_lock();
> - gsi = rcu_dereference(kvm->irq_routing)->chip[irqchip][pin];
> + idx = srcu_read_lock(&irq_srcu);
> + gsi = srcu_dereference(kvm->irq_routing, &irq_srcu)->chip[irqchip][pin];
> if (gsi != -1)
> hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
> link)
> @@ -45,7 +48,7 @@ bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
> return true;
> }
>
> - rcu_read_unlock();
> + srcu_read_unlock(&irq_srcu, idx);
Missing hunk here:
@@ -44,7 +44,7 @@ bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
link)
if (kian->gsi == gsi) {
- rcu_read_unlock();
+ srcu_read_unlock(&irq_srcu, idx);
return true;
}
Paolo
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