Re: [PATCH net-next V2] tuntap: calculate rps hash only when needed

[David Miller]

From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Mon, 25 Apr 2016 23:13:42 -0400

> There's no need to calculate rps hash if it was not enabled. So this
> patch export rps_needed and check it before trying to get rps
> hash. Tests (using pktgen to inject packets to guest) shows this can
> improve pps about 13% (when rps is disabled).
> 
> Before:
> ~1150000 pps
> After:
> ~1300000 pps
> 
> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied, thanks Jason.