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pm: schedule sysrq poweroff on boot cpu

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schedule sysrq poweroff on boot cpu.

sysrq poweroff needs to disable nonboot cpus, and we need to run this on boot
cpu to avoid any recursion.  http://bugzilla.kernel.org/show_bug.cgi?id=10897

[kosaki.motohiro@jp.fujitsu.com: build fix]
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Rus <harbour@sfinx.od.ua>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Zhang Rui 2008-07-23 21:28:40 -07:00 committed by Linus Torvalds
parent c1a220e7ac
commit 2f15fc4bdf
1 changed files with 3 additions and 1 deletions
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4
kernel/power/poweroff.c
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@ -10,6 +10,7 @@
#include <linux/pm.h>
#include <linux/workqueue.h>
#include <linux/reboot.h>
#include <linux/cpumask.h>
/*
* When the user hits Sys-Rq o to power down the machine this is the
@ -25,7 +26,8 @@ static DECLARE_WORK(poweroff_work, do_poweroff);
static void handle_poweroff(int key, struct tty_struct *tty)
{
schedule_work(&poweroff_work);
/* run sysrq poweroff on boot cpu */
schedule_work_on(first_cpu(cpu_online_map), &poweroff_work);
}
static struct sysrq_key_op sysrq_poweroff_op = {