[PATCH 0/2] section name cleanup for m68k

[PATCH 0/2] section name cleanup for m68k

[Tim Abbott]

This patch series cleans up the section names on the m68k
architecture.  It requires the architecture-independent macro
definitions from this patch series:

<http://www.spinics.net/lists/mips/msg33499.html>

The long-term goal here is to add support for building the kernel with
-ffunction-sections -fdata-sections.  This requires renaming all the
magic section names in the kernel of the form .text.foo, .data.foo,
.bss.foo, and .rodata.foo to not have collisions with sections
generated for code like:

static int nosave = 0; /* -fdata-sections places in .data.nosave */
static void head(); /* -ffunction-sections places in .text.head */

Note that these patches have not been boot-tested (aside from testing
the analogous changes on x86), since I don't have access to the
appropriate hardware.

	-Tim Abbott


Tim Abbott (2):
  m68k: use new macro for .data.cacheline_aligned section.
  m68k: use new macros for .data.init_task.

 arch/m68k/kernel/process.c        |    4 ++--
 arch/m68k/kernel/vmlinux-std.lds  |    7 ++-----
 arch/m68k/kernel/vmlinux-sun3.lds |    2 +-
 3 files changed, 5 insertions(+), 8 deletions(-)

[PATCH 1/2] m68k: use new macro for .data.cacheline_aligned section.

[Tim Abbott]

.data.cacheline_aligned should not need a separate output section;
this change moves it into the .data section.

Signed-off-by: Tim Abbott <tabbott@mit.edu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
---
 arch/m68k/kernel/vmlinux-std.lds |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index 01d212b..ac800bc 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -30,13 +30,11 @@ SECTIONS
   RODATA
 
   .data : {			/* Data */
+	CACHELINE_ALIGNED_DATA(16)
 	DATA_DATA
 	CONSTRUCTORS
 	}
 
-  . = ALIGN(16);
-  .data.cacheline_aligned : { *(.data.cacheline_aligned) }
-
   .bss : { *(.bss) }		/* BSS */
 
   _edata = .;			/* End of data section */
-- 
1.6.2.1

[PATCH 2/2] m68k: use new macros for .data.init_task.

[Tim Abbott]

.data.init_task should not need a separate output section; this change
moves it into the .data section.

I changed the aligment in both linker scripts to be THREAD_SIZE from
8192 and PAGE_SIZE, respectively.  I'd like an ack from one of the
m68k maintainers that this is right.

Signed-off-by: Tim Abbott <tabbott@mit.edu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
---
 arch/m68k/kernel/process.c        |    4 ++--
 arch/m68k/kernel/vmlinux-std.lds  |    3 +--
 arch/m68k/kernel/vmlinux-sun3.lds |    2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index ec37fb5..6bf2cac 100644
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -46,8 +46,8 @@ struct mm_struct init_mm = INIT_MM(init_mm);
 
 EXPORT_SYMBOL(init_mm);
 
-union thread_union init_thread_union
-__attribute__((section(".data.init_task"), aligned(THREAD_SIZE)))
+union thread_union init_thread_union __init_task_data
+__attribute__((aligned(THREAD_SIZE)))
        = { INIT_THREAD_INFO(init_task) };
 
 /* initial task structure */
diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index ac800bc..9e3cd1d 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -30,6 +30,7 @@ SECTIONS
   RODATA
 
   .data : {			/* Data */
+	INIT_TASK_DATA(THREAD_SIZE)
 	CACHELINE_ALIGNED_DATA(16)
 	DATA_DATA
 	CONSTRUCTORS
@@ -76,8 +77,6 @@ SECTIONS
   . = ALIGN(8192);
   __init_end = .;
 
-  .data.init_task : { *(.data.init_task) }	/* The initial task and kernel stack */
-
   _end = . ;
 
   /* Sections to be discarded */
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index c192f77..8a988db 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -24,6 +24,7 @@ SECTIONS
   _etext = .;			/* End of text section */
 
   .data : {			/* Data */
+	INIT_TASK_DATA(THREAD_SIZE)
 	DATA_DATA
 	CONSTRUCTORS
 	. = ALIGN(16);		/* Exception table */
@@ -70,7 +71,6 @@ __init_begin = .;
 #endif
 	. = ALIGN(PAGE_SIZE);
 	__init_end = .;
-	.data.init.task : { *(.data.init_task) }
 
 
   .bss : { *(.bss) }		/* BSS */
-- 
1.6.2.1