From: Johannes Weiner <hannes@saeurebad.de>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Ingo Molnar <mingo@elte.hu>, Yinghai Lu <yhlu.kernel@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 0/3] bootmem2 III
Date: Sun, 11 May 2008 21:18:09 +0200 [thread overview]
Message-ID: <87lk2gtzta.fsf@saeurebad.de> (raw)
In-Reply-To: <20080509184044.GA19109@one.firstfloor.org> (Andi Kleen's message of "Fri, 9 May 2008 20:40:44 +0200")
Hi Andi,
Andi Kleen <andi@firstfloor.org> writes:
> On Fri, May 09, 2008 at 05:17:13PM +0200, Johannes Weiner wrote:
>> here is bootmem2, a memory block-oriented boot time allocator.
>>
>> Recent NUMA topologies broke the current bootmem's assumption that
>> memory nodes provide non-overlapping and contiguous ranges of pages.
>
> I'm still not sure that's a really good rationale for bootmem2.
> e.g. the non continuous nodes are really special cases and there tends
> to be enough memory at the beginning which is enough for boot time
> use, so for those systems it would be quite reasonably to only
> put the continuous starts of the nodes into bootmem.
Hm, that would put the logic into arch-code. I have no strong opinion
about it.
> That said the bootmem code has gotten a little crufty and a clean
> rewrite might be a good idea.
I agree completely.
Hannes
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next prev parent reply other threads:[~2008-05-11 19:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-09 15:17 Johannes Weiner
2008-05-09 15:17 ` [PATCH 1/3] mm: Make NR_NODE_MEMBLKS global Johannes Weiner
2008-05-09 15:17 ` [PATCH 2/3] mm: bootmem2 Johannes Weiner
2008-05-09 15:17 ` [PATCH 3/3] x86: Migrate X86_32 to bootmem2 Johannes Weiner
2008-05-09 18:40 ` [PATCH 0/3] bootmem2 III Andi Kleen
2008-05-11 19:18 ` Johannes Weiner [this message]
2008-05-11 20:18 ` Andi Kleen
2008-05-13 12:40 ` Johannes Weiner
2008-05-13 12:59 ` Andi Kleen
2008-05-14 19:12 ` Johannes Weiner
2008-05-15 19:12 ` Andy Whitcroft
2008-05-16 20:42 ` Johannes Weiner
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