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authorJiang Liu <liuj97@gmail.com>2013-07-03 15:04:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:07:38 -0700
commit0d0b6d26ad52093452b1228325a99244e925582a (patch)
treef3a81629263e8e613002aea69c5e05ecc5ce0958 /arch/unicore32
parent715ee356535e861c0c0890697fa48eeb8af94019 (diff)
downloadlinux-linaro-stable-0d0b6d26ad52093452b1228325a99244e925582a.tar.gz
mm/unicore32: prepare for removing num_physpages and simplify mem_init()
Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/unicore32')
-rw-r--r--arch/unicore32/mm/init.c49
1 files changed, 2 insertions, 47 deletions
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index 7d1356c466b9..ae6bc036db92 100644
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -383,10 +383,6 @@ static void __init free_unused_memmap(struct meminfo *mi)
*/
void __init mem_init(void)
{
- unsigned long reserved_pages, free_pages;
- struct memblock_region *reg;
- int i;
-
max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
free_unused_memmap(&meminfo);
@@ -394,48 +390,7 @@ void __init mem_init(void)
/* this will put all unused low memory onto the freelists */
free_all_bootmem();
- reserved_pages = free_pages = 0;
-
- for_each_bank(i, &meminfo) {
- struct membank *bank = &meminfo.bank[i];
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = bank_pfn_start(bank);
- pfn2 = bank_pfn_end(bank);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- if (PageReserved(page))
- reserved_pages++;
- else if (!page_count(page))
- free_pages++;
- page++;
- } while (page < end);
- }
-
- /*
- * Since our memory may not be contiguous, calculate the
- * real number of pages we have in this system
- */
- printk(KERN_INFO "Memory:");
- num_physpages = 0;
- for_each_memblock(memory, reg) {
- unsigned long pages = memblock_region_memory_end_pfn(reg) -
- memblock_region_memory_base_pfn(reg);
- num_physpages += pages;
- printk(" %ldMB", pages >> (20 - PAGE_SHIFT));
- }
- printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT));
-
- printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n",
- nr_free_pages() << (PAGE_SHIFT-10),
- free_pages << (PAGE_SHIFT-10),
- reserved_pages << (PAGE_SHIFT-10),
- totalhigh_pages << (PAGE_SHIFT-10));
-
+ mem_init_print_info(NULL);
printk(KERN_NOTICE "Virtual kernel memory layout:\n"
" vector : 0x%08lx - 0x%08lx (%4ld kB)\n"
" vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
@@ -464,7 +419,7 @@ void __init mem_init(void)
BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
BUG_ON(TASK_SIZE > MODULES_VADDR);
- if (PAGE_SIZE >= 16384 && num_physpages <= 128) {
+ if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) {
/*
* On a machine this small we won't get
* anywhere without overcommit, so turn