[PATCH] ia64: task_thread_info()

on ia64 thread_info is at the constant offset from task_struct and stack
is embedded into the same beast.  Set __HAVE_THREAD_FUNCTIONS, made
task_thread_info() just add a constant.

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>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h
index 171b2207bde4..653bb7f9a753 100644
--- a/include/asm-ia64/thread_info.h
+++ b/include/asm-ia64/thread_info.h
@@ -57,11 +57,20 @@ struct thread_info {
 /* how to get the thread information struct from C */
 #define current_thread_info()   ((struct thread_info *) ((char *) current + IA64_TASK_SIZE))
 #define alloc_thread_info(tsk)  ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
+#define task_thread_info(tsk)   ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
 #else
 #define current_thread_info()   ((struct thread_info *) 0)
 #define alloc_thread_info(tsk)  ((struct thread_info *) 0)
+#define task_thread_info(tsk)   ((struct thread_info *) 0)
 #endif
 #define free_thread_info(ti)    /* nothing */
+#define task_stack_page(tsk)    ((void *)(tsk))
+
+#define __HAVE_THREAD_FUNCTIONS
+#define setup_thread_stack(p, org) \
+        *task_thread_info(p) = *task_thread_info(org); \
+        task_thread_info(p)->task = (p);
+#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)
 
 #define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
 #define alloc_task_struct()     ((task_t *)__get_free_pages(GFP_KERNEL, KERNEL_STACK_SIZE_ORDER))