m68k: merge the init_task code for mmu and non-mmu targets

The init_task code can be the same for both mmu and non-mmu targets.
None of the alignment carried out in the the current init_task code
is necessary. The linker script takes care of aligning the init_thread
structure to a THREAD SIZE boundary, and that is all we need.

So use the init_task.c code for all target types, that makes m68k
code consistent with what most other architectures do.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index c569619..ea0a396 100644 (file)
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -6,15 +6,12 @@ extra-$(CONFIG_MMU)   := head.o
 extra-$(CONFIG_SUN3)   := sun3-head.o
 extra-y                        += vmlinux.lds
 
-obj-y  := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \
-          signal.o sys_m68k.o syscalltable.o time.o traps.o
+obj-y  := entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o
+obj-y  += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
 
 obj-$(CONFIG_MMU)      += ints.o vectors.o
 
 ifndef CONFIG_MMU_SUN3
 obj-y                  += dma.o
 endif
-ifndef CONFIG_MMU
-obj-y                  += init_task.o
-endif
 

diff --git a/arch/m68k/kernel/init_task.c b/arch/m68k/kernel/init_task.c
index cbf9dc3..c744cfc 100644 (file)
--- a/arch/m68k/kernel/init_task.c
+++ b/arch/m68k/kernel/init_task.c
@@ -19,7 +19,6 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  *
  * All other task structs will be allocated on slabs in fork.c
  */
-__asm__(".align 4");
 struct task_struct init_task = INIT_TASK(init_task);
 
 EXPORT_SYMBOL(init_task);
@@ -27,7 +26,7 @@ EXPORT_SYMBOL(init_task);
 /*
  * Initial thread structure.
  *
- * We need to make sure that this is 8192-byte aligned due to the
+ * We need to make sure that this is THREAD size aligned due to the
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */

diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c
index 1bc223a..58a3253 100644 (file)
--- a/arch/m68k/kernel/process_mm.c
+++ b/arch/m68k/kernel/process_mm.c
@@ -33,22 +33,6 @@
 #include <asm/setup.h>
 #include <asm/pgtable.h>
 
-/*
- * Initial task/thread structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-union thread_union init_thread_union __init_task_data
-       __attribute__((aligned(THREAD_SIZE))) =
-               { INIT_THREAD_INFO(init_task) };
-
-/* initial task structure */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
 
 asmlinkage void ret_from_fork(void);