linux-kernel - [PATCH] kernel/sys.c: call disable_nonboot_cpus in kernel

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Message-Id: <1346682298-13958-1-git-send-email-shawn.guo@linaro.org>
Date:	Mon,  3 Sep 2012 22:24:58 +0800
From:	Shawn Guo <shawn.guo@...aro.org>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-arm-kernel@...ts.infradead.org,
	Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH] kernel/sys.c: call disable_nonboot_cpus in kernel_restart

Like kernel_power_off calls disable_nonboot_cpus, we may want to have
kernel_restart call disable_nonboot_cpus as well.  Doing so can help
the machines that require boot cpu be the last alive cpu during reboot
to survive with kernel restart.

Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
---
 kernel/sys.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index 241507f..6fab59a 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -368,6 +368,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
 void kernel_restart(char *cmd)
 {
 	kernel_restart_prepare(cmd);
+	disable_nonboot_cpus();
 	if (!cmd)
 		printk(KERN_EMERG "Restarting system.\n");
 	else
-- 
1.7.5.4

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