linux-kernel - Re: [PATCH v2] arch: tile: include: asm: add cmpxchg64() definition

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Message-ID: <51E6CA5B.6030501@tilera.com>
Date:	Wed, 17 Jul 2013 12:46:19 -0400
From:	Chris Metcalf <cmetcalf@...era.com>
To:	Chen Gang <gang.chen@...anux.com>
CC:	Ralf Baechle <ralf@...ux-mips.org>,
	Jörn Engel <joern@...fs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: Re: [PATCH v2] arch: tile: include: asm: add cmpxchg64() definition

On 6/30/2013 10:21 PM, Chen Gang wrote:
> Need add cmpxchg64(), or will cause compiling issue.
>
> Need define it as cmpxchg() only for 64-bit operation, since cmpxchg()
> can support 8 bytes.
>
> The related error (with allmodconfig):
>
>   drivers/block/blockconsole.c: In function ‘bcon_advance_console_bytes’:
>   drivers/block/blockconsole.c:164:2: error: implicit declaration of function ‘cmpxchg64’ [-Werror=implicit-function-declaration]
>
> Signed-off-by: Chen Gang <gang.chen@...anux.com>

Thanks, taken into the tile tree.

-- 
Chris Metcalf, Tilera Corp.
http://www.tilera.com

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