linux-kernel - Re: [Patch] numa:x86_64: Cacheline aliasing makes for_each_populated

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Date:	Wed, 25 Aug 2010 06:08:15 -0500
From:	Robin Holt <holt@....com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Robin Holt <holt@....com>, Jack Steiner <steiner@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, x86@...nel.org,
	Yinghai Lu <yinghai@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Joerg Roedel <joerg.roedel@....com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Stable Maintainers <stable@...nel.org>
Subject: Re: [Patch] numa:x86_64: Cacheline aliasing makes
 for_each_populated_zone extremely expensive -V2.

> So yes, this means adding an interface to the e820 allocator, even
> though it's scheduled to be replaced.  Because the new implementation
> will see the new interface and know they have to implement it, and the
> interface will make it clear just what exactly is expected of the
> implementation.

What is the new allocator called?  Who is developing it?  When do you
expect it to be introduced into the kernel?

Thanks,
Robin
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