mm/xtensa: prepare for removing num_physpages and simplify mem_init()

Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <[email protected]>
Cc: Chris Zankel <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: jiangliu

arch/xtensa/mm/init.c

@@ -173,39 +173,16 @@ void __init zones_init(void)
 
 void __init mem_init(void)
 {
-	unsigned long codesize, reservedpages, datasize, initsize;
-	unsigned long highmemsize, tmp, ram;
-
-	max_mapnr = num_physpages = max_low_pfn - ARCH_PFN_OFFSET;
+	max_mapnr = max_low_pfn - ARCH_PFN_OFFSET;
 	high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
-	highmemsize = 0;
 
 #ifdef CONFIG_HIGHMEM
 #error HIGHGMEM not implemented in init.c
 #endif
 
 	free_all_bootmem();
 
-	reservedpages = ram = 0;
-	for (tmp = 0; tmp < max_mapnr; tmp++) {
-		ram++;
-		if (PageReserved(mem_map+tmp))
-			reservedpages++;
-	}
-
-	codesize =  (unsigned long) _etext - (unsigned long) _stext;
-	datasize =  (unsigned long) _edata - (unsigned long) _sdata;
-	initsize =  (unsigned long) __init_end - (unsigned long) __init_begin;
-
-	printk("Memory: %luk/%luk available (%ldk kernel code, %ldk reserved, "
-	       "%ldk data, %ldk init %ldk highmem)\n",
-	       nr_free_pages() << (PAGE_SHIFT-10),
-	       ram << (PAGE_SHIFT-10),
-	       codesize >> 10,
-	       reservedpages << (PAGE_SHIFT-10),
-	       datasize >> 10,
-	       initsize >> 10,
-	       highmemsize >> 10);
+	mem_init_print_info(NULL);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD