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| author | Jiang Liu <liuj97@gmail.com> | 2013-07-03 15:03:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:07:35 -0700 |
| commit | 2450c97323e635a04f7b2f4b68680ab2c151bbbf (patch) | |
| tree | 10f77e2ed830fe2c0b37965745809b5541ac2059 /arch/arm/mm | |
| parent | de35e1b828cb21d027265847ca32e5b9cff1c1e9 (diff) | |
| download | linux-2450c97323e635a04f7b2f4b68680ab2c151bbbf.tar.bz2 | |
mm/ARM: 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: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/init.c | 47 |
1 files changed, 2 insertions, 45 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 06e9ce17d1d2..6833cbead6cc 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -583,9 +583,6 @@ static void __init free_highpages(void) */ void __init mem_init(void) { - unsigned long reserved_pages, free_pages; - struct memblock_region *reg; - int i; #ifdef CONFIG_HAVE_TCM /* These pointers are filled in on TCM detection */ extern u32 dtcm_end; @@ -605,47 +602,7 @@ void __init mem_init(void) free_highpages(); - 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); #define MLK(b, t) b, t, ((t) - (b)) >> 10 #define MLM(b, t) b, t, ((t) - (b)) >> 20 @@ -711,7 +668,7 @@ void __init mem_init(void) BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); #endif - if (PAGE_SIZE >= 16384 && num_physpages <= 128) { + if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) { extern int sysctl_overcommit_memory; /* * On a machine this small we won't get |