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author | Jiang Liu <liuj97@gmail.com> | 2013-07-04 00:04:02 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-04 01:07:36 +0200 |
commit | 6879ea83c6d14e4f21bf48b5780ed549197c668b (patch) | |
tree | 0f2763bdb63efcd9185e3a08495ffa7dd33b906e /arch/microblaze | |
parent | mm/metag: prepare for removing num_physpages and simplify mem_init() (diff) | |
download | linux-6879ea83c6d14e4f21bf48b5780ed549197c668b.tar.xz linux-6879ea83c6d14e4f21bf48b5780ed549197c668b.zip |
mm/microblaze: 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: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/microblaze')
-rw-r--r-- | arch/microblaze/mm/init.c | 51 |
1 files changed, 6 insertions, 45 deletions
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c index b384cbc2c8f2..74c7bcc1e82d 100644 --- a/arch/microblaze/mm/init.c +++ b/arch/microblaze/mm/init.c @@ -71,24 +71,17 @@ static void __init highmem_init(void) kmap_prot = PAGE_KERNEL; } -static unsigned long highmem_setup(void) +static void highmem_setup(void) { unsigned long pfn; - unsigned long reservedpages = 0; for (pfn = max_low_pfn; pfn < max_pfn; ++pfn) { struct page *page = pfn_to_page(pfn); /* FIXME not sure about */ - if (memblock_is_reserved(pfn << PAGE_SHIFT)) - continue; - free_highmem_page(page); - reservedpages++; + if (!memblock_is_reserved(pfn << PAGE_SHIFT)) + free_highmem_page(page); } - pr_info("High memory: %luk\n", - totalhigh_pages << (PAGE_SHIFT-10)); - - return reservedpages; } #endif /* CONFIG_HIGHMEM */ @@ -167,13 +160,12 @@ void __init setup_memory(void) * min_low_pfn - the first page (mm/bootmem.c - node_boot_start) * max_low_pfn * max_mapnr - the first unused page (mm/bootmem.c - node_low_pfn) - * num_physpages - number of all pages */ /* memory start is from the kernel end (aligned) to higher addr */ min_low_pfn = memory_start >> PAGE_SHIFT; /* minimum for allocation */ /* RAM is assumed contiguous */ - num_physpages = max_mapnr = memory_size >> PAGE_SHIFT; + max_mapnr = memory_size >> PAGE_SHIFT; max_low_pfn = ((u64)memory_start + (u64)lowmem_size) >> PAGE_SHIFT; max_pfn = ((u64)memory_start + (u64)memory_size) >> PAGE_SHIFT; @@ -246,46 +238,15 @@ void free_initmem(void) void __init mem_init(void) { - pg_data_t *pgdat; - unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize; - high_memory = (void *)__va(memory_start + lowmem_size - 1); /* this will put all memory onto the freelists */ free_all_bootmem(); - - for_each_online_pgdat(pgdat) { - unsigned long i; - struct page *page; - - for (i = 0; i < pgdat->node_spanned_pages; i++) { - if (!pfn_valid(pgdat->node_start_pfn + i)) - continue; - page = pgdat_page_nr(pgdat, i); - if (PageReserved(page)) - reservedpages++; - } - } - #ifdef CONFIG_HIGHMEM - reservedpages -= highmem_setup(); + highmem_setup(); #endif - codesize = (unsigned long)&_sdata - (unsigned long)&_stext; - datasize = (unsigned long)&_edata - (unsigned long)&_sdata; - initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin; - bsssize = (unsigned long)&__bss_stop - (unsigned long)&__bss_start; - - pr_info("Memory: %luk/%luk available (%luk kernel code, ", - nr_free_pages() << (PAGE_SHIFT-10), - num_physpages << (PAGE_SHIFT-10), - codesize >> 10); - pr_cont("%luk reserved, %luk data, %luk bss, %luk init)\n", - reservedpages << (PAGE_SHIFT-10), - datasize >> 10, - bsssize >> 10, - initsize >> 10); - + mem_init_print_info(NULL); #ifdef CONFIG_MMU pr_info("Kernel virtual memory layout:\n"); pr_info(" * 0x%08lx..0x%08lx : fixmap\n", FIXADDR_START, FIXADDR_TOP); |