linux-kernel - Re: [RFC PATCH 1/6] kernel: call constructors

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Message-ID: <48204766.7020506@de.ibm.com>
Date:	Tue, 06 May 2008 13:56:22 +0200
From:	Peter Oberparleiter <peter.oberparleiter@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	ltp-list@...ts.sourceforge.net,
	Rusty Russell <rusty@...tcorp.com.au>,
	ltp-coverage@...ts.sourceforge.net, sam@...nborg.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/6] kernel: call constructors

Andrew Morton wrote:
> On Mon, 05 May 2008 17:24:04 +0200 Peter Oberparleiter <peter.oberparleiter@...ibm.com> wrote:
> 
>> From: Peter Oberparleiter <peter.oberparleiter@...ibm.com>
>> --- linux-2.6.26-rc1.orig/arch/powerpc/kernel/vmlinux.lds.S
>> +++ linux-2.6.26-rc1/arch/powerpc/kernel/vmlinux.lds.S
>> @@ -193,6 +193,9 @@ SECTIONS
>>  		*(.toc)
>>  	}
>>  #endif
>> +	.data.gcov : {
>> +		CONSTRUCTORS
>> +	}
> 
> Why did powerpc (and only powerpc) need this touchup?  It already includes
> asm-generic/vmlinux.lds.h?

asm-generic/vmlinux.lds.h defines CONSTRUCTORS but it needs to be
referenced in the actual linker script to become active. For some reason
unknown to me, CONSTRUCTORS shows up in all arch/*/vmlinux.lds.S scripts
except for powerpc (see also my other reply about the CONSTRUCTORS
section).
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