diff options
| author | Yi Li <yili@winhong.com> | 2020-09-11 13:56:52 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-28 07:57:08 -0400 |
| commit | 2fc4f15dac952b9bbc2695c9040f2c17be70dabb (patch) | |
| tree | 38c6d39d5fe56ee2ff7180da3eda78cbbf57b414 /virt | |
| parent | b9757a4b6f46560cdd65afdb0e44bc06b7e60340 (diff) | |
| download | lwn-2fc4f15dac952b9bbc2695c9040f2c17be70dabb.tar.gz lwn-2fc4f15dac952b9bbc2695c9040f2c17be70dabb.zip | |
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: Yi Li <yili@winhong.com>
Message-Id: <20200911055652.3041762-1-yili@winhong.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/eventfd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index d6408bb497dc..c2323c27a28b 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -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 || |