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| author | Greg Ungerer <gerg@uclinux.org> | 2011-09-02 08:29:34 +0400 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org> | 2011-12-24 15:47:56 +0400 |
| commit | d25ba98afce7c87afa39f553a3ff8effed87db03 (patch) | |
| tree | e7158225d753e7dad7b885116672b4485fb3809e /arch/m68k/include/asm/thread_info.h | |
| parent | 8d362b0dea1a35bea8d7d281317eb7ccb713edcb (diff) | |
| download | linux-d25ba98afce7c87afa39f553a3ff8effed87db03.tar.xz | |
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>
Diffstat (limited to 'arch/m68k/include/asm/thread_info.h')
| -rw-r--r-- | arch/m68k/include/asm/thread_info.h | 30 |
1 files changed, 0 insertions, 30 deletions
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 |