Commit 2f15fc4b authored Jul 23, 2008 by Zhang Rui Committed by Linus Torvalds Jul 24, 2008

pm: schedule sysrq poweroff on boot cpu

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>

parent c1a220e7

kernel/power/poweroff.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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 = {

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