mm/openrisc: use common help functions to free reserved pages

Use common help functions to free reserved pages.
Also include <asm/sections.h> to avoid local declarations.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index e7fdc50c4bf0e428b8872f2fcd1c39505025ea0d..b3cbc670383789461bf29c61531e8c76679aa964 100644 (file)
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -43,6 +43,7 @@
 #include <asm/kmap_types.h>
 #include <asm/fixmap.h>
 #include <asm/tlbflush.h>
+#include <asm/sections.h>
 
 int mem_init_done;
 
@@ -201,9 +202,6 @@ void __init paging_init(void)
 
 /* References to section boundaries */
 
-extern char _stext, _etext, _edata, __bss_start, _end;
-extern char __init_begin, __init_end;
-
 static int __init free_pages_init(void)
 {
        int reservedpages, pfn;
@@ -263,30 +261,11 @@ void __init mem_init(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-       printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
-              (end - start) >> 10);
-
-       for (; start < end; start += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(start));
-               init_page_count(virt_to_page(start));
-               free_page(start);
-               totalram_pages++;
-       }
+       free_reserved_area(start, end, 0, "initrd");
 }
 #endif
 
 void free_initmem(void)
 {
-       unsigned long addr;
-
-       addr = (unsigned long)(&__init_begin);
-       for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(addr));
-               init_page_count(virt_to_page(addr));
-               free_page(addr);
-               totalram_pages++;
-       }
-       printk(KERN_INFO "Freeing unused kernel memory: %luk freed\n",
-              ((unsigned long)&__init_end -
-               (unsigned long)&__init_begin) >> 10);
+       free_initmem_default(0);
 }