linux-kernel - Re: [PATCH 03/07] kernel.h string cleanup

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Message-ID: <a8e1da1002260251l3eafbcc0wab8555a049fb21c7@mail.gmail.com>
Date:	Fri, 26 Feb 2010 18:51:07 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Joe Perches <joe@...ches.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/07] kernel.h string cleanup

On Fri, Feb 26, 2010 at 5:58 PM, Alexey Dobriyan <adobriyan@...il.com> wrote:
> On Fri, Feb 26, 2010 at 11:55 AM, Dave Young <hidave.darkstar@...il.com> wrote:
>> It will be more clean to put externs/declarations to their own header files.
>> At the same time compiling time benifits as well.
>>
>> printk/panic/string/trace header are splited then included by kernel.h so
>> just hexdump/int_sqrt are actually seperated.
>>
>> fresh boot
>
> You mean cold-cache compile so results are basically random?

Yes, roughly test.
I have to say I will have no time to do more testing.

>
>> and same .config, make without -j, test result as following:
>>
>> with the patches applied:
>>
>> time:
>> real 15m16.504s
>> user 12m51.866s
>> sys 1m39.700s
>>
>> vmlinux .text size: 003bfcd2
>>
>> without the patches applied*
>> time:
>> real 15m20.518s
>> user 12m54.120s
>> sys 1m40.190s
>
> Not scientific at all.
>



-- 
Regards
dave
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