Messages in this thread Patch in this message | | | From | Jacob Shin <> | Subject | [PATCH 2/6] x86, mm: Split out split_mem_range | Date | Wed, 29 Aug 2012 14:04:02 -0500 |
| |
From: Yinghai Lu <yinghai@kernel.org>
from init_memory_mapping, so make init_memory_mapping readable.
Suggested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/mm/init.c | 42 ++++++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 16 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 838e9bc..41e615b 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -143,25 +143,13 @@ static int __meminit save_mr(struct map_range *mr, int nr_range, return nr_range; } -/* - * Setup the direct mapping of the physical memory at PAGE_OFFSET. - * This runs before bootmem is initialized and gets pages directly from - * the physical memory. To access them they are temporarily mapped. - */ -unsigned long __init_refok init_memory_mapping(unsigned long start, - unsigned long end) +static int __meminit split_mem_range(struct map_range *mr, int nr_range, + unsigned long start, + unsigned long end) { unsigned long start_pfn, end_pfn; - unsigned long ret = 0; unsigned long pos; - struct map_range mr[NR_RANGE_MR]; - int nr_range, i; - - printk(KERN_INFO "init_memory_mapping: [mem %#010lx-%#010lx]\n", - start, end - 1); - - memset(mr, 0, sizeof(mr)); - nr_range = 0; + int i; /* head if not big page alignment ? */ start_pfn = start >> PAGE_SHIFT; @@ -255,6 +243,28 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, (mr[i].page_size_mask & (1<<PG_LEVEL_1G))?"1G":( (mr[i].page_size_mask & (1<<PG_LEVEL_2M))?"2M":"4k")); + return nr_range; +} + +/* + * Setup the direct mapping of the physical memory at PAGE_OFFSET. + * This runs before bootmem is initialized and gets pages directly from + * the physical memory. To access them they are temporarily mapped. + */ +unsigned long __init_refok init_memory_mapping(unsigned long start, + unsigned long end) +{ + struct map_range mr[NR_RANGE_MR]; + unsigned long ret = 0; + int nr_range, i; + + printk(KERN_INFO "init_memory_mapping: [mem %#010lx-%#010lx]\n", + start, end - 1); + + memset(mr, 0, sizeof(mr)); + nr_range = 0; + nr_range = split_mem_range(mr, nr_range, start, end); + /* * Find space for the kernel direct mapping tables. * -- 1.7.9.5
| |