[PATCH RFC V2 1/4] vhost: introduce queue_index for tracing

[Jason Wang <jasowang@redhat.com>]

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/vhost/net.c   | 1 +
 drivers/vhost/vhost.h | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index a0fa5de..85d666c 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -708,6 +708,7 @@ static int vhost_net_open(struct inode *inode, struct file *f)
 		n->vqs[i].done_idx = 0;
 		n->vqs[i].vhost_hlen = 0;
 		n->vqs[i].sock_hlen = 0;
+		n->vqs[i].vq.queue_index = i;
 	}
 	vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX);
 
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 35eeb2a..6e36416 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -96,6 +96,9 @@ struct vhost_virtqueue {
 	/* Last used index value we have signalled on */
 	bool signalled_used_valid;
 
+	/* Queue index used for tracing */
+	u16 queue_index;
+
 	/* Log writes to used structure. */
 	bool log_used;
 	u64 log_addr;
-- 
1.8.3.2