linux-kernel - Re: [PATCH] MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom

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Date:   Mon, 6 Apr 2020 13:03:33 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, linux-mips@...ux-mips.org,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Paul Burton <paulburton@...nel.org>, linux-mips@...r.kernel.org
Subject: Re: [PATCH] MIPS: fw: arc: add __weak to prom_meminit and
 prom_free_prom_memory

On Mon, Apr 06, 2020 at 01:30:52AM +0900, Masahiro Yamada wrote:
> As far as I understood, prom_meminit() in arch/mips/fw/arc/memory.c
> is overridden by the one in arch/mips/sgi-ip32/ip32-memory.c if
> CONFIG_SGI_IP32 is enabled.
> 
> The use of EXPORT_SYMBOL in static libraries potentially causes a
> problem for the llvm linker [1]. So, I want to forcibly link lib-y
> objects to vmlinux when CONFIG_MODULES=y.
> 
> As a groundwork, we must fix multiple definitions that have previously
> been hidden by lib-y.
> 
> The prom_cleanup() in this file is already marked as __weak (because
> it is overridden by the one in arch/mips/sgi-ip22/ip22-mc.c).
> I think it should be OK to do the same for these two.
> 
> [1]: https://github.com/ClangBuiltLinux/linux/issues/515
> 
> Reported-by: kbuild test robot <lkp@...el.com>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
> If MIPS maintainers ack this patch,
> I want to inser it before the following patch:


Acked-By: Thomas Bogendoerfer <tsbogend@...ha.franken.de>

Thomas.

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