From f7e4217b007d1f73e7e3cf10ba4fea4a608c603f Mon Sep 17 00:00:00 2001
From: Roman Zippel <zippel@linux-m68k.org>
Date: Wed, 9 May 2007 02:35:17 -0700
Subject: rename thread_info to stack

This finally renames the thread_info field in task structure to stack, so that
the assumptions about this field are gone and archs have more freedom about
placing the thread_info structure.

Nonbroken archs which have a proper thread pointer can do the access to both
current thread and task structure via a single pointer.

It'll allow for a few more cleanups of the fork code, from which e.g.  ia64
could benefit.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
[akpm@linux-foundation.org: build fix]
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Andi Kleen <ak@muc.de>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/asm-blackfin/processor.h | 6 +++---
 include/asm-blackfin/system.h    | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

(limited to 'include/asm-blackfin')

diff --git a/include/asm-blackfin/processor.h b/include/asm-blackfin/processor.h
index 997465c93e8..0336ff132c1 100644
--- a/include/asm-blackfin/processor.h
+++ b/include/asm-blackfin/processor.h
@@ -58,10 +58,10 @@ do {									\
 	(_regs)->pc = (_pc);						\
 	if (current->mm)						\
 		(_regs)->p5 = current->mm->start_data;			\
-	current->thread_info->l1_task_info.stack_start			\
+	task_thread_info(current)->l1_task_info.stack_start		\
 		= (void *)current->mm->context.stack_start;		\
-	current->thread_info->l1_task_info.lowest_sp = (void *)(_usp);	       	\
-	memcpy(L1_SCRATCH_TASK_INFO, &current->thread_info->l1_task_info,	\
+	task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \
+	memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \
 		sizeof(*L1_SCRATCH_TASK_INFO));				\
 	wrusp(_usp);							\
 } while(0)
diff --git a/include/asm-blackfin/system.h b/include/asm-blackfin/system.h
index b5bf6e7cb5e..5e5f1a0566c 100644
--- a/include/asm-blackfin/system.h
+++ b/include/asm-blackfin/system.h
@@ -239,9 +239,9 @@ asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_stru
 
 #define switch_to(prev,next,last) \
 do {    \
-	memcpy (&prev->thread_info->l1_task_info, L1_SCRATCH_TASK_INFO, \
+	memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \
 		sizeof *L1_SCRATCH_TASK_INFO); \
-	memcpy (L1_SCRATCH_TASK_INFO, &next->thread_info->l1_task_info, \
+	memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \
 		sizeof *L1_SCRATCH_TASK_INFO); \
 	(last) = resume (prev, next);   \
 } while (0)
-- 
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