linux-kernel - Re: [PATCH] Disable CONFIG_CONSTRUCTORS when not needed by CONFIG_GCOV

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Date:	Mon, 6 Jun 2011 23:52:29 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Sam Ravnborg <sam@...nborg.org>, Jeff Dike <jdike@...toit.com>,
	Andi Kleen <andi@...stfloor.org>,
	Huang Ying <ying.huang@...el.com>, Li Wei <W.Li@....com>,
	Michael Ellerman <michaele@....ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Heiko Carstens <heicars2@...ux.vnet.ibm.com>,
	Martin Schwidefsky <mschwid2@...ux.vnet.ibm.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Disable CONFIG_CONSTRUCTORS when not needed by CONFIG_GCOV_KERNEL

On Sun, Jun 5, 2011 at 4:21 PM, Josh Triplett <josh@...htriplett.org> wrote:
> CONFIG_CONSTRUCTORS controls support for running constructor functions
> at kernel init time.  According to commit
> b99b87f70c7785ab1e253c6220f4b0b57ce3a7f7, gcov (CONFIG_GCOV_KERNEL)
> needs this.  However, CONFIG_CONSTRUCTORS currently defaults to y, with
> no option to disable it, and CONFIG_GCOV_KERNEL depends on it.  Instead,
> default it to n and have CONFIG_GCOV_KERNEL select it, so that the
> normal case of CONFIG_GCOV_KERNEL=n will result in
> CONFIG_CONSTRUCTORS=n.
>
> Observed in the short list of =y values in a minimal kernel
> configuration.
>
> Signed-off-by: Josh Triplett <josh@...htriplett.org>

Yeah, this is reasonable, so,

Acked-by: WANG Cong <xiyou.wangcong@...il.com>

Thanks!
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