Displaying 2 results from an estimated 2 matches for "a9cbbb1".
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a9c8cb1
2016 Dec 12
0
[PATCH] vhost: cache used event for better performance
...need_event(vhost16_to_cpu(vq, event), new, old);
+ vq->last_used_event = vhost16_to_cpu(vq, event);
+
+ return vring_need_event(vq->last_used_event, new, old);
}
/* This actually signals the guest, using eventfd. */
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 78f3c5f..a9cbbb1 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -107,6 +107,9 @@ struct vhost_virtqueue {
/* Last index we used. */
u16 last_used_idx;
+ /* Last used evet we've seen */
+ u16 last_used_event;
+
/* Used flags */
u16 used_flags;
--
2.7.4
2016 Dec 12
0
[PATCH] vhost: cache used event for better performance
...need_event(vhost16_to_cpu(vq, event), new, old);
+ vq->last_used_event = vhost16_to_cpu(vq, event);
+
+ return vring_need_event(vq->last_used_event, new, old);
}
/* This actually signals the guest, using eventfd. */
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 78f3c5f..a9cbbb1 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -107,6 +107,9 @@ struct vhost_virtqueue {
/* Last index we used. */
u16 last_used_idx;
+ /* Last used evet we've seen */
+ u16 last_used_event;
+
/* Used flags */
u16 used_flags;
--
2.7.4