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@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index ad87ce826cce45ec0ac710c4dc1b721d8aaa8f97..f5c0680d17d9efd701f7c261fd3a8b0210ad9d7a 100644 (file)
--- 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");