This is a note to let you know that I've just added the patch titled
kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()
to the 3.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kernel-sys.c-call-disable_nonboot_cpus-in-kernel_restart.patch
and it can be found in the queue-3.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From f96972f2dc6365421cf2366ebd61ee4cf060c8d5 Mon Sep 17 00:00:00 2001
From: Shawn Guo <[email protected]>
Date: Thu, 4 Oct 2012 17:12:23 -0700
Subject: kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()
From: Shawn Guo <[email protected]>
commit f96972f2dc6365421cf2366ebd61ee4cf060c8d5 upstream.
As kernel_power_off() calls disable_nonboot_cpus(), we may also want to
have kernel_restart() call disable_nonboot_cpus(). Doing so can help
machines that require boot cpu be the last alive cpu during reboot to
survive with kernel restart.
This fixes one reboot issue seen on imx6q (Cortex-A9 Quad). The machine
requires that the restart routine be run on the primary cpu rather than
secondary ones. Otherwise, the secondary core running the restart
routine will fail to come to online after reboot.
Signed-off-by: Shawn Guo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
kernel/sys.c | 1 +
1 file changed, 1 insertion(+)
--- 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
Patches currently in stable-queue which might be from [email protected] are
queue-3.6/kernel-sys.c-call-disable_nonboot_cpus-in-kernel_restart.patch
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