Subject: stomp-machine-mark-stomper-thread.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 19:53:19 +0200

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/sched.h |    1 +
 kernel/stop_machine.c |    1 +
 2 files changed, 2 insertions(+)

--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1860,6 +1860,7 @@ extern void thread_group_cputime_adjuste
 #define PF_FROZEN	0x00010000	/* frozen for system suspend */
 #define PF_FSTRANS	0x00020000	/* inside a filesystem transaction */
 #define PF_KSWAPD	0x00040000	/* I am kswapd */
+#define PF_STOMPER	0x00080000	/* I am a stomp machine thread */
 #define PF_LESS_THROTTLE 0x00100000	/* Throttle me less: I clean memory */
 #define PF_KTHREAD	0x00200000	/* I am a kernel thread */
 #define PF_RANDOMIZE	0x00400000	/* randomize virtual address space */
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -327,6 +327,7 @@ static int __cpuinit cpu_stop_cpu_callba
 		if (IS_ERR(p))
 			return notifier_from_errno(PTR_ERR(p));
 		get_task_struct(p);
+		p->flags |= PF_STOMPER;
 		kthread_bind(p, cpu);
 		sched_set_stop_task(cpu, p);
 		stopper->thread = p;