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    Subject[PATCH 13/33] lmb: Add lmb_find_area_node()
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    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.

    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 72448a5..868886f 100644
    --- a/mm/lmb.c
    +++ b/mm/lmb.c
    @@ -791,6 +791,21 @@ u64 __init 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.
    */
    --
    1.6.4.2


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