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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 32 deletions

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