From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCB80C47404 for ; Mon, 7 Oct 2019 08:14:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A664620679 for ; Mon, 7 Oct 2019 08:14:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727485AbfJGIOP (ORCPT ); Mon, 7 Oct 2019 04:14:15 -0400 Received: from mx2.suse.de ([195.135.220.15]:55208 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727103AbfJGIOP (ORCPT ); Mon, 7 Oct 2019 04:14:15 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 3CD96AD45; Mon, 7 Oct 2019 08:14:13 +0000 (UTC) Date: Mon, 7 Oct 2019 10:14:11 +0200 From: Petr Mladek To: akpm@linux-foundation.org Cc: andy.shevchenko@gmail.com, sergey.senozhatsky.work@gmail.com, hughd@google.com, uwe@kleine-koenig.org, jani.nikula@linux.intel.com, corbet@lwn.net, mike.kravetz@oracle.com, joe@perches.com, linux@rasmusvillemoes.dk, aarcange@redhat.com, pavel@ucw.cz, linux-kernel@vger.kernel.org, mm-commits@vger.kernel.org Subject: Re: + printf-add-support-for-printing-symbolic-error-codes.patch added to -mm tree Message-ID: <20191007081411.fyvbvnjbvmpi4nla@pathway.suse.cz> References: <20191005215200.OEG97MjOa%akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191005215200.OEG97MjOa%akpm@linux-foundation.org> User-Agent: NeoMutt/20170912 (1.9.0) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, On Sat 2019-10-05 14:52:00, Andrew Morton wrote: > > The patch titled > Subject: vsprintf: add support for printing symbolic error codes > has been added to the -mm tree. Its filename is > printf-add-support-for-printing-symbolic-error-codes.patch The patch is still under discussion. AFAIK, Rasmus is working on v4. The main points are: + Rename the ambiguous "errcode" to "errname". + Introduce "%pe" instead of enhancing plain %p. First, the plain %p has become almost useless (hashing) on purpose (avoid leaking addresses). Second, we need something that will be explicitly used to print error codes. + Plus there are few more cosmetic issues. I planed to take the patch via printk.git once ready. Best Regards, Petr