diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-07-09 13:19:18 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-09 12:45:37 -0700 |
| commit | cc229884d3f77ec3b1240e467e0236c3e0647c0c (patch) | |
| tree | a2617adb191288d049629f911b7fef7038557a8e /mm | |
| 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>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions