From: Jesper Dangaard Brouer Date: Thu, 28 Aug 2014 16:14:47 +0000 (+0200) Subject: pktgen: add flag NO_TIMESTAMP to disable timestamping X-Git-Tag: fixes-against-v3.18-rc2~81^2~184 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=afb84b6261841f8ab387e267e748236fa805bea0;p=pandora-kernel.git pktgen: add flag NO_TIMESTAMP to disable timestamping Then testing the TX limits of the stack, then it is useful to be-able to disable the do_gettimeofday() timetamping on every packet. This implements a pktgen flag NO_TIMESTAMP which will disable this call to do_gettimeofday(). The performance change on (my system E5-2695) with skb_clone=0, goes from TX 2,423,751 pps to 2,567,165 pps with flag NO_TIMESTAMP. Thus, the cost of do_gettimeofday() or saving is approx 23 nanosec. Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller --- Reading git-diff-tree failed