| commit | cc229884d3f77ec3b1240e467e0236c3e0647c0c | [log] [tgz] |
|---|---|---|
| author | Michael S. Tsirkin <mst@redhat.com> | Tue Jul 09 13:19:18 2013 +0300 |
| committer | David S. Miller <davem@davemloft.net> | Tue Jul 09 12:45:37 2013 -0700 |
| tree | a2617adb191288d049629f911b7fef7038557a8e | |
| parent | 01276ed2424eb78c95461545410923d5da154d31 [diff] |
virtio: support unlocked queue poll This adds a way to check ring empty state after enable_cb outside any locks. Will be used by virtio_net. Note: there's room for more optimization: caller is likely to have a memory barrier already, which means we might be able to get rid of a barrier here. Deferring this optimization until we do some benchmarking. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>