[PATCH] arm: task_thread_info()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 54a21bd..46d0984 100644 (file)
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -342,10 +342,10 @@ void flush_thread(void)
 void release_thread(struct task_struct *dead_task)
 {
 #if defined(CONFIG_VFP)
-       vfp_release_thread(&dead_task->thread_info->vfpstate);
+       vfp_release_thread(&task_thread_info(dead_task)->vfpstate);
 #endif
 #if defined(CONFIG_IWMMXT)
-       iwmmxt_task_release(dead_task->thread_info);
+       iwmmxt_task_release(task_thread_info(dead_task));
 #endif
 }
 

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 2b84f78..f003062 100644 (file)
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -604,7 +604,7 @@ static int ptrace_setregs(struct task_struct *tsk, void __user *uregs)
  */
 static int ptrace_getfpregs(struct task_struct *tsk, void __user *ufp)
 {
-       return copy_to_user(ufp, &tsk->thread_info->fpstate,
+       return copy_to_user(ufp, &task_thread_info(tsk)->fpstate,
                            sizeof(struct user_fp)) ? -EFAULT : 0;
 }
 
@@ -613,7 +613,7 @@ static int ptrace_getfpregs(struct task_struct *tsk, void __user *ufp)
  */
 static int ptrace_setfpregs(struct task_struct *tsk, void __user *ufp)
 {
-       struct thread_info *thread = tsk->thread_info;
+       struct thread_info *thread = task_thread_info(tsk);
        thread->used_cp[1] = thread->used_cp[2] = 1;
        return copy_from_user(&thread->fpstate, ufp,
                              sizeof(struct user_fp)) ? -EFAULT : 0;
@@ -626,7 +626,7 @@ static int ptrace_setfpregs(struct task_struct *tsk, void __user *ufp)
  */
 static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
 {
-       struct thread_info *thread = tsk->thread_info;
+       struct thread_info *thread = task_thread_info(tsk);
        void *ptr = &thread->fpstate;
 
        if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
@@ -643,7 +643,7 @@ static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
  */
 static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp)
 {
-       struct thread_info *thread = tsk->thread_info;
+       struct thread_info *thread = task_thread_info(tsk);
        void *ptr = &thread->fpstate;
 
        if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
@@ -779,7 +779,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #endif
 
                case PTRACE_GET_THREAD_AREA:
-                       ret = put_user(child->thread_info->tp_value,
+                       ret = put_user(task_thread_info(child)->tp_value,
                                       (unsigned long __user *) data);
                        break;
 

diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 0497171..eb2de8c 100644 (file)
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -168,7 +168,7 @@ extern struct task_struct *__switch_to(struct task_struct *, struct thread_info
 
 #define switch_to(prev,next,last)                                      \
 do {                                                                   \
-       last = __switch_to(prev,prev->thread_info,next->thread_info);   \
+       last = __switch_to(prev,task_thread_info(prev), task_thread_info(next));        \
 } while (0)
 
 /*

diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h
index 7c98557..46a4e98 100644 (file)
--- a/include/asm-arm/thread_info.h
+++ b/include/asm-arm/thread_info.h
@@ -100,9 +100,9 @@ extern void free_thread_info(struct thread_info *);
 #define put_thread_info(ti)    put_task_struct((ti)->task)
 
 #define thread_saved_pc(tsk)   \
-       ((unsigned long)(pc_pointer((tsk)->thread_info->cpu_context.pc)))
+       ((unsigned long)(pc_pointer(task_thread_info(tsk)->cpu_context.pc)))
 #define thread_saved_fp(tsk)   \
-       ((unsigned long)((tsk)->thread_info->cpu_context.fp))
+       ((unsigned long)(task_thread_info(tsk)->cpu_context.fp))
 
 extern void iwmmxt_task_disable(struct thread_info *);
 extern void iwmmxt_task_copy(struct thread_info *, void *);