From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [RFC][PATCH 1/4] skbtrace: core feature Date: Wed, 11 Jul 2012 06:03:18 +0200 Message-ID: <1341979398.3265.6648.camel@edumazet-glaptop> References: <4FFBC6B6.2000600@gmail.com> <4FFCE241.6010305@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Linux Netdev List To: Li Yu Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:45535 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750901Ab2GKEDX (ORCPT ); Wed, 11 Jul 2012 00:03:23 -0400 Received: by wgbdr13 with SMTP id dr13so610102wgb.1 for ; Tue, 10 Jul 2012 21:03:21 -0700 (PDT) In-Reply-To: <4FFCE241.6010305@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 2012-07-11 at 10:17 +0800, Li Yu wrote: > From: Li Yu > > This implements core feature of skbtrace, which contains glue code of > tracepoints subsystem and relay file system, and provide skbtrace API > for particular networking traces. > > Thanks Hi Li This seems a huge amount of code, on an already complex stack. I am not convinced its needed. It looks like a debugging aid you had to write in order to understand better linux network stack. Lets see if you manage to maintain this for a while before considering upstreaming it. You said that some 'buggy' drivers set rxhash to zero, but its a valid operation. You said 'it seems that RPS hashing can not work well for some corner cases', but its a known fact. Thanks