From: Andi Kleen <andi@firstfloor.org>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Pekka J Enberg <penberg@cs.helsinki.fi>,
Christoph Lameter <christoph@lameter.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] NUMA : could we introduce virt_to_nid() ?
Date: Fri, 23 Mar 2007 15:16:33 +0100 [thread overview]
Message-ID: <20070323141633.GD20548@one.firstfloor.org> (raw)
In-Reply-To: <20070323121512.c287ddef.dada1@cosmosbay.com>
On Fri, Mar 23, 2007 at 12:15:12PM +0100, Eric Dumazet wrote:
> Hi Andi
>
> Checking Christoph quicklist implementation, I found the same cache miss in free() than SLAB has.
>
> /* common implementation *
> int virt_to_nid(const void *addr)
> {
> struct page *page = virt_to_page(addr);
> return page_to_nid(page);
> }
>
> On some platforms (x86_64 for example), could we have a better implementation, not accessing struct page, but using phys_to_nid() ?
Sure why not. Please send a patch.
-Andi
next prev parent reply other threads:[~2007-03-23 14:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-21 9:22 [RFC, PATCH] SLAB : [NUMA] keep nodeid in struct page instead of struct slab Eric Dumazet
2007-03-21 12:21 ` Pekka Enberg
2007-03-21 14:42 ` Christoph Lameter
2007-03-21 15:03 ` Pekka Enberg
2007-03-21 15:43 ` Christoph Lameter
2007-03-21 15:42 ` Pekka J Enberg
2007-03-21 15:49 ` Eric Dumazet
2007-03-21 15:55 ` Pekka J Enberg
2007-03-21 16:09 ` Andi Kleen
2007-03-21 16:19 ` Pekka Enberg
2007-03-21 16:27 ` Christoph Lameter
2007-03-23 11:15 ` [RFC] NUMA : could we introduce virt_to_nid() ? Eric Dumazet
2007-03-23 12:48 ` Pekka Enberg
2007-03-23 13:53 ` Eric Dumazet
2007-03-23 14:16 ` Andi Kleen [this message]
2007-03-23 14:50 ` Christoph Lameter
2007-03-23 16:22 ` Eric Dumazet
2007-03-23 17:19 ` Christoph Lameter
2007-03-21 12:27 ` [RFC, PATCH] SLAB : [NUMA] keep nodeid in struct page instead of struct slab Pekka Enberg
2007-03-21 14:41 ` Christoph Lameter
2007-03-21 15:36 ` Eric Dumazet
2007-03-21 15:44 ` Christoph Lameter
2007-03-21 15:58 ` Eric Dumazet
2007-03-21 15:47 ` Pekka Enberg
2007-03-21 15:52 ` Eric Dumazet
2007-03-21 16:08 ` Andi Kleen
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