From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>, Mel Gorman <mel@skynet.ie>,
Lee.Schermerhorn@hp.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
Date: Tue, 14 Aug 2007 02:16:24 +0200 [thread overview]
Message-ID: <20070814001624.GO3406@bingen.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0708131611001.19910@schroedinger.engr.sgi.com>
On Mon, Aug 13, 2007 at 04:12:17PM -0700, Christoph Lameter wrote:
> On Tue, 14 Aug 2007, Andi Kleen wrote:
>
> > > What would be the point?
> >
> > "so that drivers not need to ifdef"
>
> But they use GFP_DMA right now and drivers cannot use DMA32 if they want
The way it was originally designed was that they use GFP_DMA32,
which would map to itself on x86-64, to GFP_DMA on ia64 and to
GFP_KERNEL on i386. Unfortunately that seems to have bitrotted
(perhaps I should have better documented it)
> to be cross platforms compatible? Doesnt the dma API completely do away
> with these things?
No GFP_DMA32 in my current plan is still there.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>, Mel Gorman <mel@skynet.ie>,
Lee.Schermerhorn@hp.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
Date: Tue, 14 Aug 2007 02:16:24 +0200 [thread overview]
Message-ID: <20070814001624.GO3406@bingen.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0708131611001.19910@schroedinger.engr.sgi.com>
On Mon, Aug 13, 2007 at 04:12:17PM -0700, Christoph Lameter wrote:
> On Tue, 14 Aug 2007, Andi Kleen wrote:
>
> > > What would be the point?
> >
> > "so that drivers not need to ifdef"
>
> But they use GFP_DMA right now and drivers cannot use DMA32 if they want
The way it was originally designed was that they use GFP_DMA32,
which would map to itself on x86-64, to GFP_DMA on ia64 and to
GFP_KERNEL on i386. Unfortunately that seems to have bitrotted
(perhaps I should have better documented it)
> to be cross platforms compatible? Doesnt the dma API completely do away
> with these things?
No GFP_DMA32 in my current plan is still there.
-Andi
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next prev parent reply other threads:[~2007-08-13 23:22 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-09 21:06 [PATCH 0/4] Use one zonelist per node instead of multiple zonelists v3 Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:06 ` [PATCH 1/4] Use zonelists instead of zones when direct reclaiming pages Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:19 ` Christoph Lameter
2007-08-09 21:19 ` Christoph Lameter
2007-08-09 21:06 ` [PATCH 2/4] Use one zonelist that is filtered instead of multiple zonelists Mel Gorman
2007-08-09 21:06 ` Mel Gorman
2007-08-09 21:27 ` Christoph Lameter
2007-08-09 21:27 ` Christoph Lameter
2007-08-09 21:07 ` [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer Mel Gorman
2007-08-09 21:07 ` Mel Gorman
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 23:33 ` Mel Gorman
2007-08-09 23:33 ` Mel Gorman
2007-08-10 1:44 ` Christoph Lameter
2007-08-10 1:44 ` Christoph Lameter
2007-08-10 10:47 ` Mel Gorman
2007-08-10 10:47 ` Mel Gorman
2007-08-10 17:37 ` Christoph Lameter
2007-08-10 17:37 ` Christoph Lameter
2007-08-10 18:13 ` Andi Kleen
2007-08-10 18:13 ` Andi Kleen
2007-08-10 19:02 ` Christoph Lameter
2007-08-10 19:02 ` Christoph Lameter
2007-08-11 1:04 ` Andi Kleen
2007-08-11 1:04 ` Andi Kleen
2007-08-13 21:25 ` Christoph Lameter
2007-08-13 21:25 ` Christoph Lameter
2007-08-13 22:50 ` Andi Kleen
2007-08-13 22:50 ` Andi Kleen
2007-08-13 22:00 ` Christoph Lameter
2007-08-13 22:00 ` Christoph Lameter
2007-08-13 22:58 ` Andi Kleen
2007-08-13 22:58 ` Andi Kleen
2007-08-13 22:09 ` Christoph Lameter
2007-08-13 22:09 ` Christoph Lameter
2007-08-13 23:08 ` Andi Kleen
2007-08-13 23:08 ` Andi Kleen
2007-08-13 22:22 ` Christoph Lameter
2007-08-13 22:22 ` Christoph Lameter
2007-08-13 23:42 ` Andi Kleen
2007-08-13 23:42 ` Andi Kleen
2007-08-13 22:52 ` Christoph Lameter
2007-08-13 22:52 ` Christoph Lameter
2007-08-13 23:55 ` Andi Kleen
2007-08-13 23:55 ` Andi Kleen
2007-08-13 23:12 ` Christoph Lameter
2007-08-13 23:12 ` Christoph Lameter
2007-08-14 0:16 ` Andi Kleen [this message]
2007-08-14 0:16 ` Andi Kleen
2007-08-13 23:25 ` Christoph Lameter
2007-08-13 23:25 ` Christoph Lameter
2007-08-14 0:25 ` Andi Kleen
2007-08-14 0:25 ` Andi Kleen
2007-08-13 22:38 ` Christoph Lameter
2007-08-13 22:38 ` Christoph Lameter
2007-08-13 23:43 ` Andi Kleen
2007-08-13 23:43 ` Andi Kleen
2007-08-13 22:54 ` Christoph Lameter
2007-08-13 22:54 ` Christoph Lameter
2007-08-14 0:00 ` Andi Kleen
2007-08-14 0:00 ` Andi Kleen
2007-08-13 23:16 ` Christoph Lameter
2007-08-13 23:16 ` Christoph Lameter
2007-08-14 0:16 ` Andi Kleen
2007-08-14 0:16 ` Andi Kleen
2007-08-13 23:27 ` Christoph Lameter
2007-08-13 23:27 ` Christoph Lameter
2007-08-14 0:26 ` Andi Kleen
2007-08-14 0:26 ` Andi Kleen
2007-08-14 19:56 ` Christoph Lameter
2007-08-14 19:56 ` Christoph Lameter
2007-08-13 23:22 ` Alan Cox
2007-08-13 23:22 ` Alan Cox
2007-08-14 0:14 ` Andi Kleen
2007-08-14 0:14 ` Andi Kleen
2007-08-13 23:44 ` Alan Cox
2007-08-13 23:44 ` Alan Cox
2007-08-14 19:11 ` Andy Isaacson
2007-08-14 19:11 ` Andy Isaacson
2007-08-14 20:23 ` Andi Kleen
2007-08-14 20:23 ` Andi Kleen
2007-08-14 19:43 ` Andy Isaacson
2007-08-14 19:43 ` Andy Isaacson
2007-08-14 21:05 ` Andi Kleen
2007-08-14 21:05 ` Andi Kleen
2007-08-15 11:37 ` Ralf Baechle
2007-08-15 11:37 ` Ralf Baechle
2007-08-15 12:59 ` Andi Kleen
2007-08-15 12:59 ` Andi Kleen
2007-08-15 12:32 ` Ralf Baechle
2007-08-15 12:32 ` Ralf Baechle
2007-08-15 19:59 ` Christoph Lameter
2007-08-15 19:59 ` Christoph Lameter
2007-08-09 21:07 ` [PATCH 4/4] Apply MPOL_BIND policy to two highest zones when highest is ZONE_MOVABLE Mel Gorman
2007-08-09 21:07 ` Mel Gorman
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:37 ` Christoph Lameter
2007-08-09 21:19 ` [PATCH 0/4] Use one zonelist per node instead of multiple zonelists v3 Christoph Lameter
2007-08-09 21:19 ` Christoph Lameter
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