linux-kernel - Re: [PATCH] fix slown down printk on boot compile error

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Message-Id: <20070801093233.98b1693a.randy.dunlap@oracle.com>
Date:	Wed, 1 Aug 2007 09:32:33 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH] fix slown down printk on boot compile error

On Wed, 1 Aug 2007 13:16:44 +0200 Heiko Carstens wrote:

> From: Heiko Carstens <heiko.carstens@...ibm.com>
> 
> The slow-down-printk-during-boot patch depends on preset_lpj being
> available. That's not the case for architectures that have it's own
> calibrate_delay() function.
> 
> kernel/sched.c:3840: undefined reference to `preset_lpj'

Thanks.

> Cc: Randy Dunlap <rdunlap@...otime.net>
> Cc: Dave Jones <davej@...hat.com>
> Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
> ---
>  lib/Kconfig.debug |    2 +-
>  1 files changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-2.6.22/lib/Kconfig.debug
> ===================================================================
> --- linux-2.6.22.orig/lib/Kconfig.debug
> +++ linux-2.6.22/lib/Kconfig.debug
> @@ -436,7 +436,7 @@ config FORCED_INLINING
>  
>  config BOOT_PRINTK_DELAY
>  	bool "Delay each boot printk message by N milliseconds"
> -	depends on DEBUG_KERNEL && PRINTK
> +	depends on DEBUG_KERNEL && PRINTK && GENERIC_CALIBRATE_DELAY
>  	help
>  	  This build option allows you to read kernel boot messages
>  	  by inserting a short delay after each one.  The delay is

---
~Randy
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