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From: christos gentsis <christos_gentsis@yahoo.co.uk>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel optimization
Date: Fri, 22 Jul 2005 22:11:17 +0100	[thread overview]
Message-ID: <42E160F5.20408@yahoo.co.uk> (raw)
In-Reply-To: <20050722201416.GM3160@stusta.de>

Adrian Bunk wrote:

>On Fri, Jul 22, 2005 at 07:55:48PM +0100, christos gentsis wrote:
>
>  
>
>>hello
>>    
>>
>
>Hi Chris,
>
>  
>
>>i would like to ask if it possible to change the optimization of the 
>>kernel from -O2 to -O3 :D, how can i do that? if i change it to the top 
>>level Makefile does it change to all the Makefiles?
>>    
>>
>
>search for the line with
>  CFLAGS          += -O2
>and change this to -O3.
>
>This works for most Makefile's except for the one's that manually
>set -Os.
>
>  
>
>>And let's say that i change it... does this generate any problems with 
>>the space that the kernel will take? (the kernel will be much larger)
>>    
>>
>
>It's completely untested.
>And since it's larger, it's also slower.
>
>  
>
>>Thanks
>>Chris
>>    
>>
>
>cu
>Adrian
>
>  
>
so if i want to play with and see what happens i have to change it 
manually in each make file... good i may create a kernel like that to 
see what will happens (just for test) ;)

thanks
Chris


  reply	other threads:[~2005-07-22 21:15 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-22 18:55 kernel optimization christos gentsis
2005-07-22 19:52 ` David Lang
2005-07-22 20:15   ` Adrian Bunk
2005-07-22 20:14 ` Adrian Bunk
2005-07-22 21:11   ` christos gentsis [this message]
2005-07-23 14:34     ` Simon Strandman
2005-07-23  5:35   ` Al Boldi
2005-07-23  6:30   ` cutaway
2005-07-23 19:50     ` Alan Cox
2005-07-23 22:03       ` cutaway
     [not found] <200507231849.j6NInMPO003728@laptop11.inf.utfsm.cl>
2005-07-26  5:22 ` Al Boldi
2005-07-26  9:22   ` Adrian Bunk
  -- strict thread matches above, loose matches on Subject: below --
2005-07-27  3:53 Al Boldi
2005-07-27  4:20 ` Lee Revell

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