From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Lau Subject: Re: [PATCH RFC net-next] ip_tunnel: create percpu gro_cell Date: Mon, 12 Jan 2015 10:33:16 -0800 Message-ID: <20150112183316.GG3842288@devbig242.prn2.facebook.com> References: <1420828933-844290-1-git-send-email-kafai@fb.com> <1420844264.5947.81.camel@edumazet-glaptop2.roam.corp.google.com> <20150109231703.GF3842288@devbig242.prn2.facebook.com> <1420851759.5947.83.camel@edumazet-glaptop2.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: , To: Eric Dumazet Return-path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:20197 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755446AbbALSdU (ORCPT ); Mon, 12 Jan 2015 13:33:20 -0500 Content-Disposition: inline In-Reply-To: <1420851759.5947.83.camel@edumazet-glaptop2.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Jan 09, 2015 at 05:02:39PM -0800, Eric Dumazet wrote: > On Fri, 2015-01-09 at 15:17 -0800, Martin Lau wrote: > > Is the spin_lock() still needed? > > Think about cpu hotplug, we can have interesting things here. > > Basically no cost at all once mem is percpu. Thanks, will post a v2. --Martin