Re: [PATCH net-next V2 0/3] basic in order support for vhost_net

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On 2019/1/9 下午4:05, Jason Wang wrote:
Hi:

This series implement basic in order feature support for
vhost_net. This feature requires both driver and device to use
descriptors in order which can simplify the implementation and
optimizaton for both side. The series also implement a simple
optimization that avoid read available ring. Test shows 10%
performance improvement at most.

More optimizations could be done on top.

Changes from V1:
- no code changes
- add result of SMAP off


Just notice the patch works only for some specific case e.g a buffer only contain one descriptor. Will respin.

Thanks



Jason Wang (3):
   virtio: introduce in order feature bit
   vhost_net: support in order feature
   vhost: don't touch avail ring if in_order is negotiated

  drivers/vhost/net.c                |  6 ++++--
  drivers/vhost/vhost.c              | 19 ++++++++++++-------
  include/uapi/linux/virtio_config.h |  6 ++++++
  3 files changed, 22 insertions(+), 9 deletions(-)




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