linux-kernel - Re: [PATCH] arch: arm64: kernel: add '#ifdef CONFIG_COMPAT' for aarch32_break

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Message-ID: <20130624084744.GA23779@mudshark.cambridge.arm.com>
Date:	Mon, 24 Jun 2013 09:47:44 +0100
From:	Will Deacon <will.deacon@....com>
To:	Chen Gang <gang.chen@...anux.com>
Cc:	Catalin Marinas <Catalin.Marinas@....com>,
	Tony Lindgren <tony@...mide.com>,
	"olof@...om.net" <olof@...om.net>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH] arch: arm64: kernel: add '#ifdef CONFIG_COMPAT' for
 aarch32_break_handler()

On Sat, Jun 22, 2013 at 06:54:14AM +0100, Chen Gang wrote:
> 
> If 'COMPAT' not defined, aarch32_break_handler() cannot pass compiling,
> so need add '#ifdef' for it just like the header file has done.
> 
> The related make:
> 
>   make ARCH=arm64 randconfig
>   make ARCH=arm64 menuconfig
>   make ARCH=arm64 V=1 EXTRA_CFLAGS=-W
> 
> The related error:
> 
>   arch/arm64/kernel/debug-monitors.c:249:5: error: redefinition of ‘aarch32_break_handler’
>   In file included from arch/arm64/kernel/debug-monitors.c:29:0:
>   /root/linux-next/arch/arm64/include/asm/debug-monitors.h:89:12: note: previous definition of ‘aarch32_break_handler’ was here

Actually, can we just kill the static definition in debug-monitors.h
instead? I don't see anything in the full-blown aardch32_break_handler that
won't play nicely if !COMPAT.

Will
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