Re: [linux-usb-devel] [PATCH 3/4] usb: allocated usb releated dma buffer with?kmalloc_node

From: Oliver Neukum
Date: Tue Jul 03 2007 - 03:12:53 EST


Am Dienstag, 3. Juli 2007 schrieb Greg KH:
> > > Ok, so two drivers might need this, but not the whole usb core, right?
> >
> > If those two drivers need the extended allocator, why not use it where
> > it is beneficial, even if the benefit is small?
>
> What is the benefit?  Speed isn't an issue here, so what is?

Speed is always an issue. Every cycle used in the kernel is lost to
user space.

Regards
Oliver

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