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SubjectRe: [PATCH 15/39] lmb: Add lmb_find_area_node()
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On Thu, 2010-04-08 at 23:03 -0700, Yinghai Lu wrote:
> It can be used to find NODE_DATA for numa.
>
> Need to make sure early_node_map[] is filled before it is called, otherwise
> it will fallback to lmb_find_area(), with node range.

Isn't that more duplication from what's already in there for nid
handling ? (Which btw may not be optimal, simply what I'm saying is that
all that stuff should be factored).

Cheers,
Ben.

> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> ---
> include/linux/lmb.h | 1 +
> mm/lmb.c | 15 +++++++++++++++
> 2 files changed, 16 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/lmb.h b/include/linux/lmb.h
> index 5dbc4ef..4078825 100644
> --- a/include/linux/lmb.h
> +++ b/include/linux/lmb.h
> @@ -91,6 +91,7 @@ void lmb_add_memory(u64 start, u64 end);
> u64 __lmb_find_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
> u64 size, u64 align);
> u64 lmb_find_area(u64 start, u64 end, u64 size, u64 align);
> +u64 lmb_find_area_node(int nid, u64 start, u64 end, u64 size, u64 align);
>
> void lmb_to_bootmem(u64 start, u64 end);
> struct range;
> diff --git a/mm/lmb.c b/mm/lmb.c
> index cf0f1c9..d3a58fb 100644
> --- a/mm/lmb.c
> +++ b/mm/lmb.c
> @@ -791,6 +791,21 @@ u64 __init __weak lmb_find_area(u64 start, u64 end, u64 size, u64 align)
> return -1ULL;
> }
> /*
> + * Need to call this function after lmb_register_active_regions,
> + * so early_node_map[] is filled already.
> + */
> +u64 __init lmb_find_area_node(int nid, u64 start, u64 end, u64 size, u64 align)
> +{
> + u64 addr;
> + addr = find_memory_core_early(nid, size, align, start, end);
> + if (addr != -1ULL)
> + return addr;
> +
> + /* Fallback, should already have start end within node range */
> + return lmb_find_area(start, end, size, align);
> +}
> +
> +/*
> * Finds an active region in the address range from start_pfn to last_pfn and
> * returns its range in ei_startpfn and ei_endpfn for the lmb entry.
> */




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