Message-ID: <53BC8845.9060106@gmail.com>
Date: Wed, 09 Jul 2014 08:09:41 +0800
From: Chen Gang <gang.chen.5i5j@gmail.com>
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To: Liqin Chen <liqin.linux@gmail.com>, Lennox Wu <lennox.wu@gmail.com>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] arch/score/kernel: Add 'score_ksyms.c' to export special
 symbols
References: <53BBF6A5.8090707@gmail.com>
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Oh, sorry, forgot 'csum_partial' which also need export in this file.
And I shall send patch v2 for it.


On 07/08/2014 09:48 PM, Chen Gang wrote:
> Some symbols are not implemented in C, or not in "arch/score", but
> score need export them, so add 'score_ksyms.c' to export them, just
> like other architectures have done.
> 
> The related error (with allmodconfig under score):
> 
>    MODPOST 1365 modules
>   ERROR: "__clear_user" [drivers/md/dm-mod.ko] undefined!
>   ERROR: "__copy_tofrom_user" [net/x25/x25.ko] undefined!
>   ERROR: "__strncpy_from_user" [fs/xfs/xfs.ko] undefined!
> 
>   ERROR: "max_low_pfn" [net/wireless/lib80211_crypt_tkip.ko] undefined!
>   ERROR: "min_low_pfn" [net/wireless/lib80211_crypt_tkip.ko] undefined!
> 
> 
> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
> ---
>  arch/score/kernel/Makefile      |  2 +-
>  arch/score/kernel/score_ksyms.c | 39 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 40 insertions(+), 1 deletion(-)
>  create mode 100644 arch/score/kernel/score_ksyms.c
> 
> diff --git a/arch/score/kernel/Makefile b/arch/score/kernel/Makefile
> index fb1802b..891133b 100644
> --- a/arch/score/kernel/Makefile
> +++ b/arch/score/kernel/Makefile
> @@ -6,6 +6,6 @@ extra-y	:= head.o vmlinux.lds
>  
>  obj-y += entry.o irq.o process.o ptrace.o \
>  	setup.o signal.o sys_score.o time.o traps.o \
> -	sys_call_table.o
> +	sys_call_table.o score_ksyms.o
>  
>  obj-$(CONFIG_MODULES) += module.o
> diff --git a/arch/score/kernel/score_ksyms.c b/arch/score/kernel/score_ksyms.c
> new file mode 100644
> index 0000000..507d008
> --- /dev/null
> +++ b/arch/score/kernel/score_ksyms.c
> @@ -0,0 +1,39 @@
> +/*
> + * arch/score/kernel/score_ksyms.c
> + *
> + * Score Processor version.
> + *
> + * No Copyright (C)
> + *  Chen Gang <gang.chen.5i5j@gmail.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, see the file COPYING, or write
> + * to the Free Software Foundation, Inc.,
> + * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> + */
> +
> +#include <linux/export.h>
> +#include <linux/syscalls.h>
> +
> +/*
> + * Assembly functions that may be used (directly or indirectly) by modules
> + */
> +EXPORT_SYMBOL(__clear_user);
> +EXPORT_SYMBOL(__copy_tofrom_user);
> +EXPORT_SYMBOL(__strncpy_from_user);
> +
> +/*
> + * Define but not export in generic mm sub-systems, but score need export
> + */
> +EXPORT_SYMBOL(min_low_pfn);
> +EXPORT_SYMBOL(max_low_pfn);
> 

-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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