[PATCH 14/24] lmb: Add find_memory_core_early()
in [Kernel]
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From: Yinghai Lu on 26 Mar 2010 18:30 According to node range in early_node_map[] with __find_lmb_area to find free range. Will be used by find_lmb_area_node() find_lmb_area_node will be used to find right buffer for NODE_DATA Signed-off-by: Yinghai Lu <yinghai(a)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 c8442b6..8070bd8 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..faae23a 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 = __find_lmb_area(ei_start, ei_last, + goal, limit, size, align); + + if (addr == -1ULL) + continue; + + return addr; + } + + return -1ULL; +} +#endif + int __init add_from_early_node_map(struct range *range, int az, int nr_range, int nid) { -- 1.6.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |