--- linux-2.6.18.i686_org/include/linux/sched.h	2011-02-28 18:45:54.000000000 +0800
+++ linux-2.6.18.i686/include/linux/sched.h	2011-03-16 21:47:44.000000000 +0800
@@ -556,6 +556,15 @@
 	return &container_of(sig, struct signal_with_aux_struct, sig)->aux;
 }
 
+struct migration_req {
+	struct list_head list;
+
+	struct task_struct *task;
+	int dest_cpu;
+
+	struct completion done;
+};
+
 /* Context switch must be unlocked if interrupts are to be enabled */
 #ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW
 # define __ARCH_WANT_UNLOCKED_CTXSW
@@ -888,6 +897,7 @@
 #ifdef __ARCH_WANT_UNLOCKED_CTXSW
 	int oncpu;
 #endif
+	struct migration_req req;
 #endif
 	int load_weight;	/* for niceness load balancing purposes */
 	int prio, static_prio, normal_prio;