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authorAndrey Smetanin <asmetanin@virtuozzo.com>2015-10-16 10:07:46 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-10-16 10:34:29 +0200
commitba1aefcd6db5536d3eb3ca3ce7bd6786960140ea (patch)
tree27fd2764e673359414fb485908b42f0f200dd2b2 /virt
parent351dc6477cd35136ce4668401b1b1332a62908a8 (diff)
downloadlinux-linaro-stable-ba1aefcd6db5536d3eb3ca3ce7bd6786960140ea.tar.gz
kvm/eventfd: factor out kvm_notify_acked_gsi()
Factor out kvm_notify_acked_gsi() helper to iterate over EOI listeners and notify those matching the given gsi. It will be reused in the upcoming Hyper-V SynIC implementation. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: Roman Kagan <rkagan@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/eventfd.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 518421e65b0d..f6b986a41823 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -451,9 +451,18 @@ bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
}
EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);
-void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
+void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)
{
struct kvm_irq_ack_notifier *kian;
+
+ hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
+ link)
+ if (kian->gsi == gsi)
+ kian->irq_acked(kian);
+}
+
+void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
+{
int gsi, idx;
trace_kvm_ack_irq(irqchip, pin);
@@ -461,10 +470,7 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
idx = srcu_read_lock(&kvm->irq_srcu);
gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
if (gsi != -1)
- hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
- link)
- if (kian->gsi == gsi)
- kian->irq_acked(kian);
+ kvm_notify_acked_gsi(kvm, gsi);
srcu_read_unlock(&kvm->irq_srcu, idx);
}