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SubjectRe: [PATCH 11/35] lmb: Add find_memory_core_early()
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On Thu, 2010-05-13 at 17:19 -0700, Yinghai Lu wrote:
> According to node range in early_node_map[] with __lmb_find_area
> to find free range.
>
> Will be used by lmb_find_area_node()
>
> lmb_find_area_node will be used to find right buffer for NODE_DATA

The prototype for this has nothing to do in lmb.h under that name at
least.

Cheers,
Ben.

> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> ---
> include/linux/mm.h | 2 ++
> mm/page_alloc.c | 29 +++++++++++++++++++++++++++++
> 2 files changed, 31 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index fb19bb9..7774e1d 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1159,6 +1159,8 @@ extern void free_bootmem_with_active_regions(int nid,
> unsigned long max_low_pfn);
> int add_from_early_node_map(struct range *range, int az,
> int nr_range, int nid);
> +u64 __init find_memory_core_early(int nid, u64 size, u64 align,
> + u64 goal, u64 limit);
> void *__alloc_memory_core_early(int nodeid, u64 size, u64 align,
> u64 goal, u64 limit);
> typedef int (*work_fn_t)(unsigned long, unsigned long, void *);
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index d03c946..72afd94 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -21,6 +21,7 @@
> #include <linux/pagemap.h>
> #include <linux/jiffies.h>
> #include <linux/bootmem.h>
> +#include <linux/lmb.h>
> #include <linux/compiler.h>
> #include <linux/kernel.h>
> #include <linux/kmemcheck.h>
> @@ -3393,6 +3394,34 @@ void __init free_bootmem_with_active_regions(int nid,
> }
> }
>
> +#ifdef CONFIG_HAVE_LMB
> +u64 __init find_memory_core_early(int nid, u64 size, u64 align,
> + u64 goal, u64 limit)
> +{
> + int i;
> +
> + /* Need to go over early_node_map to find out good range for node */
> + for_each_active_range_index_in_nid(i, nid) {
> + u64 addr;
> + u64 ei_start, ei_last;
> +
> + ei_last = early_node_map[i].end_pfn;
> + ei_last <<= PAGE_SHIFT;
> + ei_start = early_node_map[i].start_pfn;
> + ei_start <<= PAGE_SHIFT;
> + addr = __lmb_find_area(ei_start, ei_last,
> + goal, limit, size, align);
> +
> + if (addr == LMB_ERROR)
> + continue;
> +
> + return addr;
> + }
> +
> + return -1ULL;
> +}
> +#endif
> +
> int __init add_from_early_node_map(struct range *range, int az,
> int nr_range, int nid)
> {




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