From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753488AbaCKOcw (ORCPT ); Tue, 11 Mar 2014 10:32:52 -0400 Received: from mail1.windriver.com ([147.11.146.13]:41418 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752868AbaCKOcW (ORCPT ); Tue, 11 Mar 2014 10:32:22 -0400 Message-ID: <531F1E7D.5060309@windriver.com> Date: Tue, 11 Mar 2014 10:32:29 -0400 From: Paul Gortmaker User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Fengguang Wu CC: Benjamin Herrenschmidt , , LKML Subject: Re: [powerpc:next 45/53] warning: (PPC_C2K && ..) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || ..) References: <531acfa5.YesaRIJhSRvrw4/w%fengguang.wu@intel.com> <531DD0F4.6020000@windriver.com> <20140311045424.GB12373@localhost> In-Reply-To: <20140311045424.GB12373@localhost> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [128.224.146.65] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 14-03-11 12:54 AM, Fengguang Wu wrote: > On Mon, Mar 10, 2014 at 10:49:24AM -0400, Paul Gortmaker wrote: >> On 14-03-08 03:07 AM, kbuild test robot wrote: >>> tree: git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc.git next >>> head: c7e64b9ce04aa2e3fad7396d92b5cb92056d16ac >>> commit: 3c8464a9b12bf83807b6e2c896d7e7b633e1cae7 [45/53] powerpc: Delete old PrPMC 280/2800 support >>> config: make ARCH=powerpc c2k_defconfig >>> >>> All warnings: >>> >>> warning: (PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON) >> >> This _looks_ like a new warning, but it really is not. If you look >> at the tree prior to the above named commit, it generates this: >> >> $ make c2k_defconfig >> warning: (PPC_PRPMC2800 && PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON) >> warning: (PPC_PRPMC2800 && PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON) >> # >> # configuration written to .config >> >> So the warning is slightly different in text, but essentially >> the exact same thing that was being warned about before. We've >> just removed one of the possible symbols from existence. > > Yes, sorry, the kbuild robot is not smart enough to detect such > slightly changed error/warnings and will treat them as new ones. No apology required. I think we all appreciate the build test coverage, and I saw your mail where you said you sent out ~60 reports yesterday- wow! Thanks, Paul. -- > >> I'm not sure there would ever be a way to teach kbuild robot >> about something as subtle as the above; just one of the false >> positives that we'll have to live with, probably. > > It is false positive: "this bug is not introduced by me!" > > However if you take a broader view, it's still notifying the possibly > "relevant" people who may know the background about that bug, or whom > to further CC the report. :) > > Thanks, > Fengguang >