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Subject[PATCH 2.6.17-rc1-mm1] Remove unused prepare_to_switch macro
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This patch removes prepare_to_switch() macros.
It seems that they are no longer used in the kernel.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Chris Zankel <chris@zankel.net>
---

include/asm-cris/system.h | 1 -
include/asm-frv/system.h | 2 --
include/asm-h8300/system.h | 2 --
include/asm-m32r/system.h | 4 ----
include/asm-v850/system.h | 2 --
include/asm-xtensa/system.h | 2 --
6 files changed, 13 deletions(-)

Index: linux-2.6.17-rc1-mm1/include/asm-cris/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-cris/system.h 2006-04-07 12:16:12.536648308 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-cris/system.h 2006-04-07 14:59:15.539846173 +0900
@@ -8,7 +8,6 @@
*/

extern struct task_struct *resume(struct task_struct *prev, struct task_struct *next, int);
-#define prepare_to_switch() do { } while(0)
#define switch_to(prev,next,last) last = resume(prev,next, \
(int)&((struct task_struct *)0)->thread)

Index: linux-2.6.17-rc1-mm1/include/asm-frv/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-frv/system.h 2006-04-07 12:16:13.424508512 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-frv/system.h 2006-04-07 14:59:15.547844914 +0900
@@ -18,8 +18,6 @@

struct thread_struct;

-#define prepare_to_switch() do { } while(0)
-
/*
* switch_to(prev, next) should switch from task `prev' to `next'
* `prev' will never be the same as `next'.
Index: linux-2.6.17-rc1-mm1/include/asm-h8300/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-h8300/system.h 2006-04-07 12:16:16.056094164 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-h8300/system.h 2006-04-07 14:59:15.559843026 +0900
@@ -4,8 +4,6 @@
#include <linux/config.h> /* get configuration macros */
#include <linux/linkage.h>

-#define prepare_to_switch() do { } while(0)
-
/*
* switch_to(n) should switch tasks to task ptr, first checking that
* ptr isn't the current task, in which case it does nothing. This
Index: linux-2.6.17-rc1-mm1/include/asm-m32r/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-m32r/system.h 2006-04-07 12:16:21.918171168 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-m32r/system.h 2006-04-07 14:59:15.568841610 +0900
@@ -22,10 +22,6 @@
* `next' and `prev' should be struct task_struct, but it isn't always defined
*/

-#ifndef CONFIG_SMP
-#define prepare_to_switch() do { } while(0)
-#endif /* not CONFIG_SMP */
-
#define switch_to(prev, next, last) do { \
register unsigned long arg0 __asm__ ("r0") = (unsigned long)prev; \
register unsigned long arg1 __asm__ ("r1") = (unsigned long)next; \
Index: linux-2.6.17-rc1-mm1/include/asm-v850/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-v850/system.h 2006-04-07 12:16:51.535507822 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-v850/system.h 2006-04-07 14:59:15.576840351 +0900
@@ -18,8 +18,6 @@
#include <asm/ptrace.h>


-#define prepare_to_switch() do { } while (0)
-
/*
* switch_to(n) should switch tasks to task ptr, first checking that
* ptr isn't the current task, in which case it does nothing.
Index: linux-2.6.17-rc1-mm1/include/asm-xtensa/system.h
===================================================================
--- linux-2.6.17-rc1-mm1.orig/include/asm-xtensa/system.h 2006-04-07 12:16:53.529193908 +0900
+++ linux-2.6.17-rc1-mm1/include/asm-xtensa/system.h 2006-04-07 14:59:15.585838935 +0900
@@ -111,8 +111,6 @@ extern void *_switch_to(void *last, void

#endif /* __ASSEMBLY__ */

-#define prepare_to_switch() do { } while(0)
-
#define switch_to(prev,next,last) \
do { \
clear_cpenable(); \
--
Hirokazu Takata <takata@linux-m32r.org>
Linux/M32R Project: http://www.linux-m32r.org/

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