m68k: remove thread_info struct from thread struct

Currently on m68k we have a comeplete thread_info structure stored inside
of the thread_struct, and we also have it in the initial part of the kernel
stack. Mostly the code currently uses the one inside of the thread_struct,
only using the "task" pointer from the stack based one.

This is wasteful and confusing, we should only have the single instance of
thread_info inside the stack page. And this is the norm for all other
architectures.

This change makes m68k handle thread_info consistently on both MMU enabled
and non-MMU setups.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

2 files changed, 0 insertions, 32 deletions

diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index 568facf30276..7ec06096a6fb 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -88,14 +88,12 @@ struct thread_struct {
         unsigned long  fp[8*3];
         unsigned long  fpcntl[3];       /* fp control regs */
         unsigned char  fpstate[FPSTATESIZE];  /* floating point state */
-        struct thread_info info;
 };
 
 #define INIT_THREAD  {                                                  \
         .ksp    = sizeof(init_stack) + (unsigned long) init_stack,      \
         .sr     = PS_S,                                                 \
         .fs     = __KERNEL_DS,                                          \
-        .info   = INIT_THREAD_INFO(init_task),                          \
 }
 
 #ifdef CONFIG_MMU
diff --git a/arch/m68k/include/asm/thread_info.h b/arch/m68k/include/asm/thread_info.h
index e4e2159ca6ec..01cef3ceff46 100644
--- a/arch/m68k/include/asm/thread_info.h
+++ b/arch/m68k/include/asm/thread_info.h
@@ -47,34 +47,6 @@ struct thread_info {
 
 #define init_stack              (init_thread_union.stack)
 
-#ifdef CONFIG_MMU
-
-#ifndef __ASSEMBLY__
-#include <asm/current.h>
-#endif
-
-#ifdef ASM_OFFSETS_C
-#define task_thread_info(tsk)   ((struct thread_info *) NULL)
-#else
-#include <asm/asm-offsets.h>
-#define task_thread_info(tsk)   ((struct thread_info *)((char *)tsk+TASK_INFO))
-#endif
-
-#define init_thread_info        (init_task.thread.info)
-#define task_stack_page(tsk)    ((tsk)->stack)
-#define current_thread_info()   task_thread_info(current)
-
-#define __HAVE_THREAD_FUNCTIONS
-
-#define setup_thread_stack(p, org) ({                   \
-        *(struct task_struct **)(p)->stack = (p);       \
-        task_thread_info(p)->task = (p);                \
-})
-
-#define end_of_stack(p)         ((unsigned long *)(p)->stack + 1)
-
-#else /* !CONFIG_MMU */
-
 #ifndef __ASSEMBLY__
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)
@@ -92,8 +64,6 @@ static inline struct thread_info *current_thread_info(void)
 
 #define init_thread_info        (init_thread_union.thread_info)
 
-#endif /* CONFIG_MMU */
-
 /* entry.S relies on these definitions!
  * bits 0-7 are tested at every exception exit
  * bits 8-15 are also tested at syscall exit