linux-kernel - Re: [Patch] numa: introduce CONFIG_NUMA

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Date:	Mon, 29 Aug 2011 10:29:29 +0800
From:	Cong Wang <amwang@...hat.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Randy Dunlap <rdunlap@...otime.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>, gregkh@...e.de,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org
Subject: Re: [Patch] numa: introduce CONFIG_NUMA_SYSFS for drivers/base/node.c

于 2011年08月26日 04:57, David Rientjes 写道:
> On Thu, 25 Aug 2011, Cong Wang wrote:
>
>>> No, it doesn't work, CONFIG_HUGETLBFS can be enabled with CONFIG_NUMA=y
>>> and CONFIG_SYSFS=n and that uses data structures from drivers/base/node.c
>>> which doesn't get compiled with this patch.
>>
>> So, you mean with CONFIG_NUMA=y&&  CONFIG_SYSFS=n&&  CONFIG_HUGETLBFS=y
>> we still get compile error?
>>
>> Which data structures are used by hugetlbfs?
>>
>
> node_states[], which is revealed at link time if you tried to compile your
> patch.  It's obvious that we don't want to add per-node hugetlbfs
> attributes to sysfs directories if sysfs is disabled, so you need to
> modify the hugetlbfs code as well.

Makes sense. Thanks!
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