[PATCH 5/6] Add new READ_MOSTLY_DATA(align) linker script macro.

[Tim Abbott]

This patch is preparation for replacing most ".data.read_mostly" in
the kernel with macros, so that the section name can later be changed
without having to touch a lot of the kernel.

The long-term goal here is to be able to change the kernel's magic
section names to those that are compatible with -ffunction-sections
-fdata-sections.  This requires renaming all magic sections with names
of the form ".data.foo".

Signed-off-by: Tim Abbott <tabbott at mit.edu>
Cc: Sam Ravnborg <sam at ravnborg.org>
---
 include/asm-generic/vmlinux.lds.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 4b020e8..a4b4f4a 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -139,6 +139,10 @@
 	. = ALIGN(alignment);						\
 	*(.data.init_task)
 
+#define READ_MOSTLY_DATA(alignment)					\
+	. = ALIGN(alignment);						\
+	*(.data.read_mostly)
+
 #define RO_DATA(align)							\
 	. = ALIGN((align));						\
 	.rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
-- 
1.6.2.1