[PATCH v6, part4 03/41] c6x: normalize global variables exported by vmlinux.lds

From: Jiang Liu
Date: Wed May 29 2013 - 09:58:28 EST


Normalize global variables exported by vmlinux.lds to conform usage
guidelines from include/asm-generic/sections.h.

Use _text to mark the start of the kernel image including the head text,
and _stext to mark the start of the .text section.

This patch also fixes possible bugs due to current address layout that
[__init_begin, __init_end] is a sub-range of [_stext, _etext] and pages
within range [__init_begin, __init_end] will be freed by free_initmem().

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Mark Salter <msalter@xxxxxxxxxx>
Cc: Aurelien Jacquiot <a-jacquiot@xxxxxx>
Cc: linux-c6x-dev@xxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
arch/c6x/kernel/vmlinux.lds.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index 1d81c4c..279d807 100644
--- a/arch/c6x/kernel/vmlinux.lds.S
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -54,16 +54,15 @@ SECTIONS
}

. = ALIGN(PAGE_SIZE);
+ __init_begin = .;
.init :
{
- _stext = .;
_sinittext = .;
HEAD_TEXT
INIT_TEXT
_einittext = .;
}

- __init_begin = _stext;
INIT_DATA_SECTION(16)

PERCPU_SECTION(128)
@@ -74,6 +73,7 @@ SECTIONS
.text :
{
_text = .;
+ _stext = .;
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
--
1.8.1.2

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