Messages in this thread | | | From | Jason Wang <> | Subject | [PATCH V3 0/6] vhost code cleanup and minor enhancement | Date | Mon, 2 Sep 2013 16:40:55 +0800 |
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This series tries to unify and simplify vhost codes especially for zerocopy. With this series, 5% - 10% improvement for per cpu throughput were seen during netperf guest sending test.
Plase review.
Changes from V2: - Typo fixes and code style fix - Add performance gain in the commit log of patch 2/6 - Retest the update the result in patch 6/6
Changes from V1: - Fix the zerocopy enabling check by changing the check of upend_idx != done_idx to (upend_idx + 1) % UIO_MAXIOV == done_idx. - Switch to use put_user() in __vhost_add_used_n() if there's only one used - Keep the max pending check based on Michael's suggestion.
Jason Wang (6): vhost_net: make vhost_zerocopy_signal_used() return void vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used() vhost: switch to use vhost_add_used_n() vhost_net: determine whether or not to use zerocopy at one time vhost_net: poll vhost queue after marking DMA is done vhost_net: correctly limit the max pending buffers
drivers/vhost/net.c | 92 ++++++++++++++++++++++-------------------------- drivers/vhost/vhost.c | 54 ++++++---------------------- 2 files changed, 54 insertions(+), 92 deletions(-)
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