Messages in this thread | | | From | "Jankowski, Konrad0" <> | Subject | RE: [Intel-wired-lan] [PATCH net-next 9/9] ixgbevf: switch to napi_build_skb() | Date | Sun, 12 Dec 2021 13:47:39 +0000 |
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> -----Original Message----- > From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of > Alexander Lobakin > Sent: wtorek, 23 listopada 2021 18:19 > To: intel-wired-lan@lists.osuosl.org > Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; Jakub Kicinski > <kuba@kernel.org>; David S. Miller <davem@davemloft.net> > Subject: [Intel-wired-lan] [PATCH net-next 9/9] ixgbevf: switch to > napi_build_skb() > > napi_build_skb() reuses per-cpu NAPI skbuff_head cache in order to save > some cycles on freeing/allocating skbuff_heads on every new Rx or > completed Tx. > ixgbevf driver runs Tx completion polling cycle right before the Rx one and > uses napi_consume_skb() to feed the cache with skbuff_heads of > completed entries, so it's never empty and always warm at that moment. > Switch to the napi_build_skb() to relax mm pressure on heavy Rx. > > Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com> > Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> > --- > drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c > b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c > index b1dfbaff8b31..ea73fb3026bc 100644 > --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c > +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c > @@ -944,7 +944,7 @@ static struct sk_buff *ixgbevf_build_skb(struct
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
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