linux-kernel - Re: [PATCH] slab: remove bootmem calling

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Message-ID: <4A1F37DD.5030800@kernel.org>
Date:	Thu, 28 May 2009 18:18:21 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Pekka Enberg <penberg@...helsinki.fi>, mingo@...e.hu,
	Christoph Lameter <cl@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	mpm@...enic.com, npiggin@...e.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] slab: remove bootmem calling

Yinghai Lu wrote:
> mem_init/kmem_cache_init is moved up
> 
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> ---
>  mm/page_cgroup.c |   12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> Index: linux-2.6/mm/page_cgroup.c
> ===================================================================
> --- linux-2.6.orig/mm/page_cgroup.c
> +++ linux-2.6/mm/page_cgroup.c
> @@ -47,6 +47,8 @@ static int __init alloc_node_page_cgroup
>  	struct page_cgroup *base, *pc;
>  	unsigned long table_size;
>  	unsigned long start_pfn, nr_pages, index;
> +	struct page *page;
> +	unsigned int order;
>  
>  	start_pfn = NODE_DATA(nid)->node_start_pfn;
>  	nr_pages = NODE_DATA(nid)->node_spanned_pages;
> @@ -55,11 +57,13 @@ static int __init alloc_node_page_cgroup
>  		return 0;
>  
>  	table_size = sizeof(struct page_cgroup) * nr_pages;
> -
> -	base = __alloc_bootmem_node_nopanic(NODE_DATA(nid),
> -			table_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
> -	if (!base)
> +	order = get_order(table_size);
> +	page = alloc_pages_node(nid, GFP_NOWAIT | __GFP_ZERO, order);
> +	if (!page)
> +		page = alloc_pages_node(-1, GFP_NOWAIT | __GFP_ZERO, order);
> +	if (!page)
>  		return -ENOMEM;
> +	base = page_address(page);

any good way to replace __alloc_bootmem_node that could take alignment?

YH
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