diff options
| -rw-r--r-- | arch/x86/kernel/setup.c | 16 | ||||
| -rw-r--r-- | include/linux/memblock.h | 1 | ||||
| -rw-r--r-- | mm/memblock.c | 17 |
3 files changed, 19 insertions, 15 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index b80bee10982..bbe8cdf7515 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -363,20 +363,6 @@ static void __init relocate_initrd(void) ramdisk_here, ramdisk_here + ramdisk_size - 1); } -static u64 __init get_mem_size(unsigned long limit_pfn) -{ - int i; - u64 mapped_pages = 0; - unsigned long start_pfn, end_pfn; - - for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) { - start_pfn = min_t(unsigned long, start_pfn, limit_pfn); - end_pfn = min_t(unsigned long, end_pfn, limit_pfn); - mapped_pages += end_pfn - start_pfn; - } - - return mapped_pages << PAGE_SHIFT; -} static void __init early_reserve_initrd(void) { /* Assume only end is not page aligned */ @@ -404,7 +390,7 @@ static void __init reserve_initrd(void) initrd_start = 0; - mapped_size = get_mem_size(max_pfn_mapped); + mapped_size = memblock_mem_size(max_pfn_mapped); if (ramdisk_size >= (mapped_size>>1)) panic("initrd too large to handle, " "disabling initrd (%lld needed, %lld available)\n", diff --git a/include/linux/memblock.h b/include/linux/memblock.h index d452ee19106..f388203db7e 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -155,6 +155,7 @@ phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr); phys_addr_t memblock_phys_mem_size(void); +phys_addr_t memblock_mem_size(unsigned long limit_pfn); phys_addr_t memblock_start_of_DRAM(void); phys_addr_t memblock_end_of_DRAM(void); void memblock_enforce_memory_limit(phys_addr_t memory_limit); diff --git a/mm/memblock.c b/mm/memblock.c index 88adc8afb61..b8d9147e5c0 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -828,6 +828,23 @@ phys_addr_t __init memblock_phys_mem_size(void) return memblock.memory.total_size; } +phys_addr_t __init memblock_mem_size(unsigned long limit_pfn) +{ + unsigned long pages = 0; + struct memblock_region *r; + unsigned long start_pfn, end_pfn; + + for_each_memblock(memory, r) { + start_pfn = memblock_region_memory_base_pfn(r); + end_pfn = memblock_region_memory_end_pfn(r); + start_pfn = min_t(unsigned long, start_pfn, limit_pfn); + end_pfn = min_t(unsigned long, end_pfn, limit_pfn); + pages += end_pfn - start_pfn; + } + + return (phys_addr_t)pages << PAGE_SHIFT; +} + /* lowest address */ phys_addr_t __init_memblock memblock_start_of_DRAM(void) { |