[PATCH v3, part4 35/39] mm/unicore32: prepare for removing num_physpages and simplify mem_init()
From: Jiang Liu <hidden>
Date: 2013-03-26 16:03:48
Also in:
linux-mm, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu <redacted> Cc: Guan Xuetao <redacted> Cc: Michal Hocko <redacted> Cc: David Rientjes <rientjes@google.com> Cc: linux-kernel@vger.kernel.org --- Hi all, Sorry for my mistake that my previous patch series has been screwed up. So I regenerate a third version and also set up a git tree at: git://github.com/jiangliu/linux.git mem_init Any help to review and test are welcomed! Regards! Gerry --- arch/unicore32/mm/init.c | 49 ++-------------------------------------------- 1 file changed, 2 insertions(+), 47 deletions(-)
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index 119b9e8..39a967a 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
--
1.7.9.5
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