linux-kernel - Re: [PATCH 3/4] usb: allocated usb releated dma buffer with kmalloc

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Message-ID: <86802c440707032308w3f596ff1gd17faaded43ff894@mail.gmail.com>
Date:	Tue, 3 Jul 2007 23:08:08 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Greg KH" <greg@...ah.com>
Cc:	linux-usb-devel@...ts.sourceforge.net, "Andi Kleen" <ak@...e.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] usb: allocated usb releated dma buffer with kmalloc_node

On 7/2/07, Greg KH <greg@...ah.com> wrote:
> On Mon, Jul 02, 2007 at 10:33:12PM -0700, Yinghai Lu wrote:
> Ok, so two drivers might need this, but not the whole usb core, right?
>
> And even if you do have another usb mapping, is that a real problem?
> USB keyboards and mice are very slow.

Some other USB media may need that too.

if you have one two way system and put all dimm on node1 and use
memtest to look at performance. you may agree to reduce the cross node
mem access as less as possible.

YH
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