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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 3 Jul 2007 09:12:39 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Greg KH <greg@...ah.com>
Cc:	linux-usb-devel@...ts.sourceforge.net,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...e.de>
Subject: Re: [linux-usb-devel] [PATCH 3/4] usb: allocated usb releated dma buffer with?kmalloc_node

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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/