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| author | Eric Dumazet <edumazet@google.com> | 2017-02-04 07:49:21 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-04 19:38:28 -0500 |
| commit | 4d6308aac3258ecad8444811a16951a919adc131 (patch) | |
| tree | 866aefc115e959b34de38e715069ce0304c051af /tools/perf/tests/switch-tracking.c | |
| parent | a076d1bdc678a2b9157660af8bd691322c0ba3dd (diff) | |
virtio_net: exploit napi_complete_done() return value
Since commit 364b6055738b ("net: busy-poll: return busypolling status to
drivers"), napi_complete_done() returns a boolean that can be used
by drivers to conditionally rearm interrupts.
This patch changes virtio_net to use this boolean to avoid a bit of
overhead for busy-poll users.
Jason reports about 1.1% improvement for 1 byte TCP_RR (burst 100).
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/tests/switch-tracking.c')
0 files changed, 0 insertions, 0 deletions