linux-kernel - [PATCH v2, part1 11/29] mm/m32r: use common help functions to free reserved pages

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Message-Id: <1362896833-21104-12-git-send-email-jiang.liu@huawei.com>
Date:	Sun, 10 Mar 2013 14:26:54 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>
Cc:	Jiang Liu <jiang.liu@...wei.com>,
	Wen Congyang <wency@...fujitsu.com>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Chris Clayton <chris2553@...glemail.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>, Mel Gorman <mgorman@...e.de>,
	Minchan Kim <minchan@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Hirokazu Takata <takata@...ux-m32r.org>
Subject: [PATCH v2, part1 11/29] mm/m32r: 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@...wei.com>
Cc: Hirokazu Takata <takata@...ux-m32r.org>
---
 arch/m32r/mm/init.c |   26 +++-----------------------
 1 file changed, 3 insertions(+), 23 deletions(-)

diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index 78b660e..ab4cbce 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -28,10 +28,7 @@
 #include <asm/mmu_context.h>
 #include <asm/setup.h>
 #include <asm/tlb.h>
-
-/* References to section boundaries */
-extern char _text, _etext, _edata;
-extern char __init_begin, __init_end;
+#include <asm/sections.h>
 
 pgd_t swapper_pg_dir[1024];
 
@@ -184,17 +181,7 @@ void __init mem_init(void)
  *======================================================================*/
 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: %dk freed\n", \
-	  (int)(&__init_end - &__init_begin) >> 10);
+	free_initmem_default(0);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
@@ -204,13 +191,6 @@ void free_initmem(void)
  *======================================================================*/
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	unsigned long p;
-	for (p = start; p < end; p += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(p));
-		init_page_count(virt_to_page(p));
-		free_page(p);
-		totalram_pages++;
-	}
-	printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+	free_reserved_area(start, end, 0, "initrd");
 }
 #endif
-- 
1.7.9.5

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