linux-kernel - Re: [PATCH] __used is needed for function referenced only from inline asm

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Message-ID: <20081124090403.GA25218@elte.hu>
Date:	Mon, 24 Nov 2008 10:04:03 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Török Edwin <edwintorok@...il.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	David Howells <dhowells@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] __used is needed for function referenced only from
	inline asm


* Török Edwin <edwintorok@...il.com> wrote:

> According to the gcc manual, the 'used' attribute should be applied to
> functions referenced only from inline assembly.
> This fixes a build failure with llvm-gcc-4.2, which deleted
> __mutex_lock_slowpath, __mutex_unlock_slowpath.
> 
> Signed-off-by: Török Edwin <edwintorok@...il.com>
> ---
>  kernel/mutex.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)

quite sad - it's gcc inline assembly after all - applied to 
tip/core/locking (for v2.6.29). Should this get into v2.6.28 too?

	Ingo
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