linux-kernel - Re: [2.6 patch] let LOG_BUF

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Date:	Mon, 28 Jan 2008 14:37:48 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] let LOG_BUF_SHIFT default to 17

On Tue, 29 Jan 2008 00:12:23 +0200 Adrian Bunk wrote:

> 16 kB is often no longer enough for a normal boot of an UP system.

s/16/64/ then agreed.

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>


> And even less when people e.g. use suspend.
> 
> 17 seems to be a more reasonable default for current kernels on current 
> hardware (it's just the default, anyone who is memory limited can 
> still lower it).
> 
> Signed-off-by: Adrian Bunk <bunk@...nel.org>
> 
> ---
> f02213e3c1cb90ec1c66227f037110d489f30bfd 
> diff --git a/init/Kconfig b/init/Kconfig
> index 0eda68f..81a1255 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -272,17 +272,14 @@ config IKCONFIG_PROC
>  config LOG_BUF_SHIFT
>  	int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
>  	range 12 21
> -	default 17 if S390 || LOCKDEP
> -	default 16 if X86_NUMAQ || IA64
> -	default 15 if SMP
> -	default 14
> +	default 17
>  	help
>  	  Select kernel log buffer size as a power of 2.
> -	  Defaults and Examples:
> -	  	     17 => 128 KB for S/390
> -		     16 => 64 KB for x86 NUMAQ or IA-64
> -	             15 => 32 KB for SMP
> -	             14 => 16 KB for uniprocessor
> +	  Examples:
> +	  	     17 => 128 KB
> +		     16 => 64 KB
> +	             15 => 32 KB
> +	             14 => 16 KB
>  		     13 =>  8 KB
>  		     12 =>  4 KB
>  
> 
> --
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---
~Randy
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