mm/openrisc: 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>
Acked-by: Jonas Bonn <jonas@southpole.se>
Cc: David Howells <dhowells@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/openrisc/mm/init.c

@@ -202,56 +202,20 @@ void __init paging_init(void)
 
 /* References to section boundaries */
 
-static int __init free_pages_init(void)
-{
-	int reservedpages, pfn;
-
-	/* this will put all low memory onto the freelists */
-	free_all_bootmem();
-
-	reservedpages = 0;
-	for (pfn = 0; pfn < max_low_pfn; pfn++) {
-		/*
-		 * Only count reserved RAM pages
-		 */
-		if (PageReserved(mem_map + pfn))
-			reservedpages++;
-	}
-
-	return reservedpages;
-}
-
-static void __init set_max_mapnr_init(void)
-{
-	max_mapnr = num_physpages = max_low_pfn;
-}
-
 void __init mem_init(void)
 {
-	int codesize, reservedpages, datasize, initsize;
-
 	BUG_ON(!mem_map);
 
-	set_max_mapnr_init();
-
+	max_mapnr = max_low_pfn;
 	high_memory = (void *)__va(max_low_pfn * PAGE_SIZE);
 
 	/* clear the zero-page */
 	memset((void *)empty_zero_page, 0, PAGE_SIZE);
 
-	reservedpages = free_pages_init();
-
-	codesize = (unsigned long)&_etext - (unsigned long)&_stext;
-	datasize = (unsigned long)&_edata - (unsigned long)&_etext;
-	initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin;
+	/* this will put all low memory onto the freelists */
+	free_all_bootmem();
 
-	printk(KERN_INFO
-	       "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init, %ldk highmem)\n",
-	       (unsigned long)nr_free_pages() << (PAGE_SHIFT - 10),
-	       max_mapnr << (PAGE_SHIFT - 10), codesize >> 10,
-	       reservedpages << (PAGE_SHIFT - 10), datasize >> 10,
-	       initsize >> 10, (unsigned long)(0 << (PAGE_SHIFT - 10))
-	    );
+	mem_init_print_info(NULL);
 
 	printk("mem_init_done ...........................................\n");
 	mem_init_done = 1;