From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, pj@sgi.com, jes@sgi.com,
Andy Whitcroft <apw@shadowen.org>
Subject: Re: [1/3] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions.
Date: Thu, 10 Aug 2006 12:41:37 -0700 [thread overview]
Message-ID: <20060810124137.6da0fdef.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0608080930380.27620@schroedinger.engr.sgi.com>
On Tue, 8 Aug 2006 09:33:46 -0700 (PDT)
Christoph Lameter <clameter@sgi.com> wrote:
> Add a new gfp flag __GFP_THISNODE to avoid fallback to other nodes. This flag
> is essential if a kernel component requires memory to be located on a
> certain node. It will be needed for alloc_pages_node() to force allocation
> on the indicated node and for alloc_pages() to force allocation on the
> current node.
This adds a little bit of overhead to non-numa kernels. I think that
overhead could be eliminated if we were to do
#ifndef CONFIG_NUMA
#define __GFP_THISNODE 0
#endif
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next prev parent reply other threads:[~2006-08-10 19:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-08 16:33 Christoph Lameter
2006-08-08 16:34 ` [2/3] sys_move_pages: Do not fall back to other nodes Christoph Lameter
2006-08-08 16:37 ` [3/3] Guarantee that the uncached allocator gets pages on the correct node Christoph Lameter
2006-08-08 16:56 ` [1/3] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions Andy Whitcroft
2006-08-08 17:01 ` Christoph Lameter
2006-08-08 16:59 ` Mel Gorman
2006-08-08 17:03 ` Christoph Lameter
2006-08-08 17:16 ` Mel Gorman
2006-08-08 17:51 ` Christoph Lameter
2006-08-08 17:47 ` Paul Jackson
2006-08-08 17:59 ` Christoph Lameter
2006-08-08 18:18 ` Paul Jackson
2006-08-08 18:49 ` Christoph Lameter
2006-08-08 20:35 ` Paul Jackson
2006-08-09 9:33 ` Mel Gorman
2006-08-09 1:34 ` KAMEZAWA Hiroyuki
2006-08-09 2:00 ` Christoph Lameter
2006-08-10 19:41 ` Andrew Morton [this message]
2006-08-11 3:16 ` Christoph Lameter
2006-08-11 18:08 ` Andrew Morton
2006-08-11 18:15 ` Christoph Lameter
2006-08-11 18:42 ` Andrew Morton
2006-08-11 18:51 ` Christoph Lameter
2006-08-11 19:15 ` Andrew Morton
2006-08-11 19:16 ` Christoph Lameter
2006-08-11 19:41 ` Dave McCracken
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