c6x: normalize global variables exported by vmlinux.lds

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@huawei.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index 1d81c4c129ec..279d80725128 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