[Top] [All Lists]

Re: [RFC PATCH 00/09] robust VM per_cpu variables

To: Steven Rostedt <>
Subject: Re: [RFC PATCH 00/09] robust VM per_cpu variables
From: Christoph Lameter <>
Date: Wed, 17 May 2006 10:40:04 -0700 (PDT)
Cc: LKML <>, Rusty Russell <>, Paul Mackerras <>, Nick Piggin <>, 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: <> <> <> <> <>
On Wed, 17 May 2006, Steven Rostedt wrote:

> > Well I'd like to see a comprehensive solution including a fix for the
> > problems with allocper_cpu() allocations (allocper_cpu has to allocate
> > memory for potential processors... which could be a lot on
> > some types of systems and its allocated somewhere not on the nodes of the
> > processor since they may not yet be online).
> OK, now you're beyond what I'm working with ;)  No hot plug CPUs for me.
> Well, at least not yet!

You need to at least consider how this could be handled by the per_cpu 
memory manangement. The VM thingie with dynamic per cpu memory would allow 
a fixup of allocpercpu.

<Prev in Thread] Current Thread [Next in Thread>