From: Jiang Liu Date: Wed, 19 Jun 2013 00:06:27 +0000 (+1000) Subject: mm/blackfin: prepare for removing num_physpages and simplify mem_init() X-Git-Tag: next-20130619~2^2~447 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ad188a7295c08c1aa35fac46fcd76b256e5f38ea;p=karo-tx-linux.git mm/blackfin: prepare for removing num_physpages and simplify mem_init() Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu Cc: Mike Frysinger Cc: Bob Liu Signed-off-by: Andrew Morton --- diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c index c73d80ef564f..166842de3dc7 100644 --- a/arch/blackfin/mm/init.c +++ b/arch/blackfin/mm/init.c @@ -90,43 +90,17 @@ asmlinkage void __init init_pda(void) void __init mem_init(void) { - unsigned int codek = 0, datak = 0, initk = 0; - unsigned int reservedpages = 0, freepages = 0; - unsigned long tmp; - unsigned long start_mem = memory_start; - unsigned long end_mem = memory_end; + char buf[64]; - end_mem &= PAGE_MASK; - high_memory = (void *)end_mem; - - start_mem = PAGE_ALIGN(start_mem); - max_mapnr = num_physpages = MAP_NR(high_memory); - printk(KERN_DEBUG "Kernel managed physical pages: %lu\n", num_physpages); + high_memory = (void *)(memory_end & PAGE_MASK); + max_mapnr = MAP_NR(high_memory); + printk(KERN_DEBUG "Kernel managed physical pages: %lu\n", max_mapnr); /* This will put all low memory onto the freelists. */ free_all_bootmem(); - reservedpages = 0; - for (tmp = ARCH_PFN_OFFSET; tmp < max_mapnr; tmp++) - if (PageReserved(pfn_to_page(tmp))) - reservedpages++; - freepages = max_mapnr - ARCH_PFN_OFFSET - reservedpages; - - /* do not count in kernel image between _rambase and _ramstart */ - reservedpages -= (_ramstart - _rambase) >> PAGE_SHIFT; -#if (defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) && ANOMALY_05000263) - reservedpages += (_ramend - memory_end - DMA_UNCACHED_REGION) >> PAGE_SHIFT; -#endif - - codek = (_etext - _stext) >> 10; - initk = (__init_end - __init_begin) >> 10; - datak = ((_ramstart - _rambase) >> 10) - codek - initk; - - printk(KERN_INFO - "Memory available: %luk/%luk RAM, " - "(%uk init code, %uk kernel code, %uk data, %uk dma, %uk reserved)\n", - (unsigned long) freepages << (PAGE_SHIFT-10), (_ramend - CONFIG_PHY_RAM_BASE_ADDRESS) >> 10, - initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10))); + snprintf(buf, sizeof(buf) - 1, "%uK DMA", DMA_UNCACHED_REGION >> 10); + mem_init_print_info(buf); } #ifdef CONFIG_BLK_DEV_INITRD