linux-kernel - [PATCH] arm64: mm: add __init section marker to free_initrd

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Date:	Mon, 27 Jul 2015 02:32:53 +0000
From:	Wang Long <long.wanglong@...wei.com>
To:	<catalin.marinas@....com>, <will.deacon@....com>
CC:	<mark.rutland@....com>, <ard.biesheuvel@...aro.org>,
	<lauraa@...eaurora.org>, <ganapatrao.kulkarni@...iumnetworks.com>,
	<Yalin.Wang@...ymobile.com>, <leif.lindholm@...aro.org>,
	<long.wanglong@...wei.com>, <msalter@...hat.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <wanglong@...wei.com>,
	<peifeiyue@...wei.com>
Subject: [PATCH] arm64: mm: add __init section marker to free_initrd_mem

It is not needed after booting, this patch moves the
free_initrd_mem() function to the __init section.

This patch also make keep_initrd __initdata, to reduce kernel
size.

Signed-off-by: Wang Long <long.wanglong@...wei.com>
---
 arch/arm64/mm/init.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index ad87ce8..f5c0680 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -358,9 +358,9 @@ void free_initmem(void)
 
 #ifdef CONFIG_BLK_DEV_INITRD
 
-static int keep_initrd;
+static int keep_initrd __initdata;
 
-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");
-- 
1.8.3.4

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