From: Christoph Lameter <cl@linux.com>
To: Tejun Heo <tj@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
Gavin Shan <shangw@linux.vnet.ibm.com>,
David Miller <davem@davemloft.net>,
Yinghai Lu <yinghai@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [patch 00/10] (no)bootmem bits for 3.5
Date: Wed, 9 May 2012 12:54:37 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1205091252450.11225@router.home> (raw)
In-Reply-To: <20120509173528.GD24636@google.com>
On Wed, 9 May 2012, Tejun Heo wrote:
> Indeed, preferring node 0 for bootmem allocation on x86_32 got lost
> across the nobootmem changes. I followed the git history and
> preferring NODE_DATA(0) goes back to the initial git branch creation
> time (2.6.12) and I couldn't find any explanation, and nobody
> complained about the changed behavior. hpa, do you know why the code
> to prefer node 0 for bootmem allocations was added in the first place?
> Maybe we can just remove it?
On some early 32 bit NUMA platforms only node 0 had ZONE_NORMAL memory.
There is just no other ZONE_NORMAL memory available on other nodes on that
hardware. But that is ancient history.
Wondering if 32 bit numa machines still exist. If so how do they partition
memory below 1G?
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next prev parent reply other threads:[~2012-05-09 17:54 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-07 11:37 Johannes Weiner
2012-05-07 11:37 ` [patch 01/10] mm: bootmem: fix checking the bitmap when finally freeing bootmem Johannes Weiner
2012-05-07 18:07 ` Tejun Heo
2012-05-07 11:37 ` [patch 02/10] mm: bootmem: remove redundant offset check " Johannes Weiner
2012-05-07 18:08 ` Tejun Heo
2012-05-07 11:37 ` [patch 03/10] mm: bootmem: rename alloc_bootmem_core to alloc_bootmem_bdata Johannes Weiner
2012-05-07 11:37 ` [patch 04/10] mm: bootmem: split out goal-to-node mapping from goal dropping Johannes Weiner
2012-05-07 11:37 ` [patch 05/10] mm: bootmem: allocate in order node+goal, goal, node, anywhere Johannes Weiner
2012-05-07 11:37 ` [patch 06/10] mm: bootmem: unify allocation policy of (non-)panicking node allocations Johannes Weiner
2012-05-07 11:37 ` [patch 07/10] mm: nobootmem: panic on node-specific allocation failure Johannes Weiner
2012-05-07 19:17 ` Yinghai Lu
2012-05-07 11:37 ` [patch 08/10] mm: nobootmem: unify allocation policy of (non-)panicking node allocations Johannes Weiner
2012-05-07 19:23 ` Yinghai Lu
2012-05-07 11:37 ` [patch 09/10] mm: bootmem: pass pgdat instead of pgdat->bdata down the stack Johannes Weiner
2012-05-07 11:37 ` [patch 10/10] mm: remove sparsemem allocation details from the bootmem allocator Johannes Weiner
2012-05-07 18:19 ` Tejun Heo
2012-05-07 18:21 ` David Miller
2012-05-10 21:44 ` Andrew Morton
2012-05-15 11:47 ` Johannes Weiner
2012-05-07 20:41 ` [patch 00/10] (no)bootmem bits for 3.5 Sam Ravnborg
2012-05-07 22:01 ` Johannes Weiner
2012-05-08 17:57 ` Sam Ravnborg
2012-05-09 17:35 ` Tejun Heo
2012-05-09 17:54 ` Christoph Lameter [this message]
2012-05-09 18:08 ` Tejun Heo
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