Commit 2fc4f15d authored by Yi Li's avatar Yi Li Committed by Paolo Bonzini
Browse files

kvm/eventfd: move wildcard calculation outside loop 



There is no need to calculate wildcard in each iteration
since wildcard is not changed.

Signed-off-by: default avatarYi Li <yili@winhong.com>
Message-Id: <20200911055652.3041762-1-yili@winhong.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b9757a4b

virt/kvm/eventfd.c

+3 −1
Original line number Diff line number Diff line
@@ -853,15 +853,17 @@ kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx, 
	struct eventfd_ctx       *eventfd;

	struct kvm_io_bus	 *bus;

	int                       ret = -ENOENT;

	bool                      wildcard;



	eventfd = eventfd_ctx_fdget(args->fd);

	if (IS_ERR(eventfd))

		return PTR_ERR(eventfd);



	wildcard = !(args->flags & KVM_IOEVENTFD_FLAG_DATAMATCH);



	mutex_lock(&kvm->slots_lock);



	list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {

		bool wildcard = !(args->flags & KVM_IOEVENTFD_FLAG_DATAMATCH);



		if (p->bus_idx != bus_idx ||

		    p->eventfd != eventfd  ||