examples/vhost: add branch hints

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 8517fd3..cc945f1 100644 (file)
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1013,7 +1013,7 @@ virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
 
                        LOG_DEBUG(VHOST_DATA, "(%"PRIu64") TX: MAC address is local\n", tdev->device_fh);
 
-                       if (dev_ll->vdev->remove) {
+                       if (unlikely(dev_ll->vdev->remove)) {
                                /*drop the packet if the device is marked for removal*/
                                LOG_DEBUG(VHOST_DATA, "(%"PRIu64") Device is marked for removal\n", tdev->device_fh);
                        } else {
@@ -1211,7 +1211,7 @@ switch_worker(__attribute__((unused)) void *arg)
                        vdev = dev_ll->vdev;
                        dev = vdev->dev;
 
-                       if (vdev->remove) {
+                       if (unlikely(vdev->remove)) {
                                dev_ll = dev_ll->next;
                                unlink_vmdq(vdev);
                                vdev->ready = DEVICE_SAFE_REMOVE;
@@ -1250,7 +1250,7 @@ switch_worker(__attribute__((unused)) void *arg)
                                }
                        }
 
-                       if (!vdev->remove) {
+                       if (likely(!vdev->remove)) {
                                /* Handle guest TX*/
                                tx_count = rte_vhost_dequeue_burst(dev, VIRTIO_TXQ, mbuf_pool, pkts_burst, MAX_PKT_BURST);
                                /* If this is the first received packet we need to learn the MAC and setup VMDQ */