linux-kernel - Re: [PATCH 15/35] x86: make 64 bit use early

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Date:	Tue, 09 Feb 2010 13:45:12 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH 15/35] x86: make 64 bit use early_res instead of bootmem
 before slab

On 02/09/2010 01:37 PM, Yinghai Lu wrote:
> On 02/09/2010 12:26 PM, Andrew Morton wrote:
>> On Tue, 09 Feb 2010 11:32:26 -0800
>> Yinghai Lu <yinghai@...nel.org> wrote:
>>
>>> +u64 __init find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
>>> +			 u64 size, u64 align)
>>> +{
>>> +	u64 addr, last;
>>> +
>>> +	addr = round_up(ei_start, align);
>>
>> Can we use include/linux/log2.h:roundup_pow_of_two() in this patchset?
> 
> no, that is not what we want.
> 
> 
> /**
>  * roundup_pow_of_two - round the given value up to nearest power of two
>  * @n - parameter
>  *

Hah.  Naming can be a real headache with small, common operations.

At the same time, round_up() versus roundup() is a source of some
serious confusion.   roundup_bin() might be a better name... I don't know.

	-hpa
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