linux-kernel - Re: [patch 2/6] hugetlb: Fix section mismatches

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Date:	Wed, 13 Jan 2010 10:42:14 -0500
From:	Jeff Mahoney <jeffm@...e.com>
To:	Lee Schermerhorn <Lee.Schermerhorn@...com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [patch 2/6] hugetlb: Fix section mismatches

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On 01/13/2010 10:40 AM, Lee Schermerhorn wrote:
> On Tue, 2010-01-12 at 19:48 -0500, Jeff Mahoney wrote:
>> plain text document attachment (patches.rpmify)
>> hugetlb_register_node calls hugetlb_sysfs_add_hstate, which is marked with
>>  __init. Since hugetlb_register_node is only called by
>>  hugetlb_register_all_nodes, which in turn is only called by hugetlb_init,
>>  it's safe to mark both of them as __init.
> 
> Actually, hugetlb_register_node() also called, via a function pointer
> that hugetlb registers with the sysfs node driver, when a node is hot
> plugged.  So, I think the correct approach is to remove the '__init'
> from hugetlb_sysfs_add_hstate() as this is also used at runtime.  I
> missed this in the original submittal.

Yep. You're right. Sorry for the noise.

- -Jeff

> Regards,
> Lee Schermerhorn
> 
>>
>> Signed-off-by: Jeff Mahoney <jeffm@...e.com>
>> ---
>>  mm/hugetlb.c |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> --- a/mm/hugetlb.c
>> +++ b/mm/hugetlb.c
>> @@ -1630,7 +1630,7 @@ void hugetlb_unregister_node(struct node
>>   * hugetlb module exit:  unregister hstate attributes from node sysdevs
>>   * that have them.
>>   */
>> -static void hugetlb_unregister_all_nodes(void)
>> +static void __init hugetlb_unregister_all_nodes(void)
>>  {
>>  	int nid;
>>  
>> @@ -1650,7 +1650,7 @@ static void hugetlb_unregister_all_nodes
>>   * Register hstate attributes for a single node sysdev.
>>   * No-op if attributes already registered.
>>   */
>> -void hugetlb_register_node(struct node *node)
>> +void __init hugetlb_register_node(struct node *node)
>>  {
>>  	struct hstate *h;
>>  	struct node_hstate *nhs = &node_hstates[node->sysdev.id];
>>
>>
>> --
>> To unsubscribe, send a message with 'unsubscribe linux-mm' in
>> the body to majordomo@...ck.org.  For more info on Linux MM,
>> see: http://www.linux-mm.org/ .
>> Don't email: <a href=mailto:"dont@...ck.org"> email@...ck.org </a>
> 


- -- 
Jeff Mahoney
SUSE Labs
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