Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead | KernelTrap

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

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From: David Miller <davem@...>

To: <herbert@...>

Cc: <clameter@...>, <akpm@...>, <linux-arch@...>, <linux-kernel@...>, <mathieu.desnoyers@...>, <penberg@...>

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

Date: Monday, November 12, 2007 - 5:28 pm

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 12 Nov 2007 18:52:35 +0800

quoted text> David Miller <davem@davemloft.net> wrote:
> > 
> > Each IP compression tunnel instance does an alloc_percpu().
> 
> Actually all IPComp tunnels share one set of objects which are
> allocated per-cpu.  So only the first tunnel would do that.
> 
> In fact that was precisely the reason why per-cpu is used in
> IPComp as otherwise we can just allocate normal memory.

Hmmm... indeed.  Thanks for clearing this up.
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Messages in current thread:

[patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cp..., Christoph Lameter, (Wed Oct 31, 8:02 pm)

[PATCH 1/7] One less parameter to __d_path, Jan Blunck, (Mon Oct 29, 8:41 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Eric Dumazet, (Thu Nov 1, 3:17 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 8:57 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 5:28 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 6:11 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 6:14 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 6:16 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 3:57 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 9:01 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 5:25 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 8:24 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 8:26 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 8:27 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 8:31 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 8:51 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 8:53 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 9:00 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 9:01 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 9:09 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 9:12 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Wed Oct 31, 9:13 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 12:16 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 3:01 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 5:14 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 9:03 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 5:29 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 6:15 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 6:38 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 6:48 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Eric Dumazet, (Thu Nov 1, 7:00 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 9:40 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 8:58 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 6:58 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Herbert Xu, (Mon Nov 12, 6:52 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Mon Nov 12, 5:28 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Mon Nov 12, 3:14 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Eric Dumazet, (Mon Nov 12, 3:48 pm)

RE: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Luck, Tony, (Mon Nov 12, 3:57 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Eric Dumazet, (Mon Nov 12, 4:14 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Mon Nov 12, 6:46 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Mon Nov 12, 3:56 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Eric Dumazet, (Mon Nov 12, 4:18 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Mon Nov 12, 6:46 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Peter Zijlstra, (Fri Nov 2, 6:28 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Fri Nov 2, 10:35 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Peter Zijlstra, (Fri Nov 2, 11:20 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Fri Nov 2, 11:29 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Thu Nov 1, 9:06 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 10:51 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 1:38 am)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., Christoph Lameter, (Wed Oct 31, 9:21 pm)

Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce pe..., David Miller, (Thu Nov 1, 1:27 am)

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