linux-kernel - Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

lists.openwall.net		lists / announce john-users owl-users popa3d-users / xvendor oss-security / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4
Open Source and information security mailing list archives

Order Openwall GNU/*/Linux 2.0 on a CD with delivery worldwide

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

Date:	Wed, 31 Oct 2007 18:21:02 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	David Miller <davem@...emloft.net>
Subject: Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu
 access overhead

On Wed, 31 Oct 2007, David Miller wrote:

> From: Christoph Lameter <clameter@....com>
> Date: Wed, 31 Oct 2007 18:12:11 -0700 (PDT)
> 
> > On Wed, 31 Oct 2007, David Miller wrote:
> > 
> > > All I can do now is bisect and then try to figure out what about the
> > > guilty change might cause the problem.
> > 
> > Reverting the 7th patch should avoid using the sparc register that caches 
> > the per cpu area offset? (I though so, does it?)
> 
> Yes, that's right, %g5 holds the local cpu's per-cpu offset.

And if I add the address of a percpu variable then I get to the variable 
for this cpu right?

-
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/