From 3122c331190e9d1622bf1c8cf6ce3b17cca67c9e Mon Sep 17 00:00:00 2001
From: Huang Ying <ying.huang@intel.com>
Date: Fri, 15 Aug 2008 00:40:26 -0700
Subject: kexec jump: fix for ftrace

Ftrace depends on some processor state that we destroyed during kexec and
restored by restore_processor_state().  So save_processor_state() and
restore_processor_state() are moved into machine_kexec() and ftrace is
restored after restore_processor_state().

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 kernel/kexec.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'kernel')

diff --git a/kernel/kexec.c b/kernel/kexec.c
index 17c80fdc453b..9fc6f7cbd8a8 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1469,7 +1469,6 @@ int kernel_kexec(void)
 		error = device_power_down(PMSG_FREEZE);
 		if (error)
 			goto Enable_irqs;
-		save_processor_state();
 	} else
 #endif
 	{
@@ -1482,7 +1481,6 @@ int kernel_kexec(void)
 
 #ifdef CONFIG_KEXEC_JUMP
 	if (kexec_image->preserve_context) {
-		restore_processor_state();
 		device_power_up(PMSG_RESTORE);
  Enable_irqs:
 		local_irq_enable();
-- 
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