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 <jiang.liu@huawei.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index c73d80ef564fe90b1ed9b24fb2c4c226e9111a74..166842de3dc7622403cb575b811803a20f83c41c 100644 (file)
--- 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