linux-kernel - [PATCH -v2 4/8] kexec jump: remove duplication of kexec_restart

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Date:	Fri, 08 Aug 2008 14:52:39 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Pavel Machek <pavel@....cz>, nigel@...el.suspend2.net,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vivek Goyal <vgoyal@...hat.com>, mingo@...e.hu,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	Kexec Mailing List <kexec@...ts.infradead.org>
Subject: [PATCH -v2 4/8] kexec jump: remove duplication of
	kexec_restart_prepare()

Call kernel_restart_prepare() in kernel_kexec() instead of duplicating
the code.

Signed-off-by: Huang Ying <ying.huang@...el.com>
Acked-by: Pavel Machek <pavel@...e.cz>
Acked-by: Vivek Goyal <vgoyal@...hat.com>

---
 include/linux/reboot.h |    1 +
 kernel/kexec.c         |    6 +-----
 kernel/sys.c           |    2 +-
 3 files changed, 3 insertions(+), 6 deletions(-)

--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -59,6 +59,7 @@ extern void machine_crash_shutdown(struc
  * Architecture independent implemenations of sys_reboot commands.
  */
 
+extern void kernel_restart_prepare(char *cmd);
 extern void kernel_restart(char *cmd);
 extern void kernel_halt(void);
 extern void kernel_power_off(void);
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -274,7 +274,7 @@ void emergency_restart(void)
 }
 EXPORT_SYMBOL_GPL(emergency_restart);
 
-static void kernel_restart_prepare(char *cmd)
+void kernel_restart_prepare(char *cmd)
 {
 	blocking_notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd);
 	system_state = SYSTEM_RESTART;
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1472,11 +1472,7 @@ int kernel_kexec(void)
 	} else
 #endif
 	{
-		blocking_notifier_call_chain(&reboot_notifier_list,
-					     SYS_RESTART, NULL);
-		system_state = SYSTEM_RESTART;
-		device_shutdown();
-		sysdev_shutdown();
+		kernel_restart_prepare(NULL);
 		printk(KERN_EMERG "Starting new kernel\n");
 		machine_shutdown();
 	}


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