linux-kernel - [RFC] change keep_initrd and free_initrd

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Message-ID: <35FD53F367049845BC99AC72306C23D103D6DB49160E@CNBJMBX05.corpusers.net>
Date:	Tue, 16 Sep 2014 13:09:30 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	'Russell King - ARM Linux' <linux@....linux.org.uk>,
	'Jiang Liu' <jiang.liu@...wei.com>,
	"'linux-mm@...ck.org'" <linux-mm@...ck.org>,
	'Will Deacon' <Will.Deacon@....com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: [RFC] change keep_initrd and free_initrd_mem into .init section

this patch change keep_initrd to __initdata section,
and free_initrd_mem to __init section so that they can be freed by
free_initmem, free_initrd_mem is only called by free_initrd function,
so it's safe to free it after use.

Signed-off-by: Yalin Wang <yalin.wang@...ymobile.com>
---
 arch/arm/mm/init.c   | 4 ++--
 arch/arm64/mm/init.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 659c75d..907dee1 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -631,9 +631,9 @@ void free_initmem(void)
 
 #ifdef CONFIG_BLK_DEV_INITRD
 
-static int keep_initrd;
+static int __initdata keep_initrd;
 
-void free_initrd_mem(unsigned long start, unsigned long end)
+void __init free_initrd_mem(unsigned long start, unsigned long end)
 {
 	if (!keep_initrd) {
 		poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 5472c24..7268d57 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -330,9 +330,9 @@ void free_initmem(void)
 
 #ifdef CONFIG_BLK_DEV_INITRD
 
-static int keep_initrd;
+static int __initdata keep_initrd;
 
-void free_initrd_mem(unsigned long start, unsigned long end)
+void __init free_initrd_mem(unsigned long start, unsigned long end)
 {
 	if (!keep_initrd)
 		free_reserved_area((void *)start, (void *)end, 0, "initrd");
-- 
2.1.0
--
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