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| author | Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> | 2018-07-03 10:31:33 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-04 15:30:46 +0300 |
| commit | be294a51adfc1e1d9884e34480c34e4388f27904 (patch) | |
| tree | f0f243eb398195ac71bc9f6b741aec7047d04171 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 027b17603b030f1334ade079b7a3e986569c956b (diff) | |
| download | linux-be294a51adfc1e1d9884e34480c34e4388f27904.tar.xz | |
vhost_net: Avoid rx queue wake-ups during busypoll
We may run handle_rx() while rx work is queued. For example a packet can
push the rx work during the window before handle_rx calls
vhost_net_disable_vq().
In that case busypoll immediately exits due to vhost_has_work()
condition and enables vq again. This can lead to another unnecessary rx
wake-ups, so poll rx work instead of enabling the vq.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions