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Re: [PATCH 00/05] robust per_cpu allocation for modules

Subject: Re: [PATCH 00/05] robust per_cpu allocation for modules
From: Christoph Lameter <>
Date: Mon, 17 Apr 2006 09:55:02 -0700 (PDT)
Cc: Nick Piggin <>, Steven Rostedt <>, LKML <>, Andrew Morton <>, Linus Torvalds <>, Ingo Molnar <>, Thomas Gleixner <>, Andi Kleen <>, Martin Mares <>,,,,, Chris Zankel <>, Marc Gauthier <>, Joe Taylor <>, David Mosberger-Tang <>,,,,,,,,,,,,,
In-reply-to: <>
Original-recipient: rfc822;
References: <1145049535.1336.128.camel@localhost.localdomain> <>
On Sat, 15 Apr 2006, Nick Piggin wrote:

> If I'm following you correctly, this adds another dependent load
> to a per-CPU data access, and from memory that isn't node-affine.

I am also concerned about that. Kiran has a patch to avoid allocpercpu
having to go through one level of indirection that I guess would no 
longer work with this scheme.
> If so, I think people with SMP and NUMA kernels would care more
> about performance and scalability than the few k of memory this
> saves.


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