From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965410AbeEIQHg (ORCPT ); Wed, 9 May 2018 12:07:36 -0400 Received: from asavdk3.altibox.net ([109.247.116.14]:44544 "EHLO asavdk3.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965208AbeEIQHc (ORCPT ); Wed, 9 May 2018 12:07:32 -0400 Date: Wed, 9 May 2018 18:07:27 +0200 From: Sam Ravnborg To: Masahiro Yamada Cc: linux-kbuild@vger.kernel.org, Arnd Bergmann , Joe Perches , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/8] export.h: remove code for prefixing symbols with underscore Message-ID: <20180509160727.GA7459@ravnborg.org> References: <1525850632-10921-1-git-send-email-yamada.masahiro@socionext.com> <1525850632-10921-6-git-send-email-yamada.masahiro@socionext.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1525850632-10921-6-git-send-email-yamada.masahiro@socionext.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=QZlIQPTv c=1 sm=1 tr=0 a=ddpE2eP9Sid01c7MzoqXPA==:117 a=ddpE2eP9Sid01c7MzoqXPA==:17 a=kj9zAlcOel0A:10 a=c-n4J4-pAAAA:8 a=idjVBUkO-wjWtF39dhMA:9 a=CjuIK1q_8ugA:10 a=L0NDqeB7ZLmQzAogN4cw:22 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Masahiro On Wed, May 09, 2018 at 04:23:49PM +0900, Masahiro Yamada wrote: > CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG. > They were removed by commit 4ba66a976072 ("arch: remove blackfin port"), > commit bb6fb6dfcc17 ("metag: Remove arch/metag/"), respectively. > > No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX. > Clean up the export.h headers. I am keeping VMLINUX_SYMBOL() and > VMLINUX_SYMBOL_STR() because they are widely used. > > Signed-off-by: Masahiro Yamada > --- > diff --git a/include/linux/export.h b/include/linux/export.h > index 1a1dfdb..b768d6d 100644 > --- a/include/linux/export.h > +++ b/include/linux/export.h > @@ -10,14 +10,8 @@ > * hackers place grumpy comments in header files. > */ > > -/* Some toolchains use a `_' prefix for all user symbols. */ > -#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX > -#define __VMLINUX_SYMBOL(x) _##x > -#define __VMLINUX_SYMBOL_STR(x) "_" #x > -#else > #define __VMLINUX_SYMBOL(x) x > #define __VMLINUX_SYMBOL_STR(x) #x > -#endif > > /* Indirect, so macros are expanded before pasting. */ > #define VMLINUX_SYMBOL(x) __VMLINUX_SYMBOL(x) Since we no longer need any expansion, then the indirection seems unnessesary. I think we can reduce this to just: #define VMLINUX_SYMBOL(x) x Likewise for __VMLINUX_SYMBOL_STR Sam