--- zzzz-none-000/linux-2.6.28.10/kernel/rcuclassic.c	2009-05-02 18:54:43.000000000 +0000
+++ puma5-6360-529/linux-2.6.28.10/kernel/rcuclassic.c	2009-12-09 15:55:12.000000000 +0000
@@ -259,7 +259,12 @@
 void call_rcu(struct rcu_head *head,
 				void (*func)(struct rcu_head *rcu))
 {
-	unsigned long flags;
+    /*--- unsigned long adr = (unsigned long)func; ---*/
+    /*--- unsigned long content = *(unsigned long*)adr; ---*/
+	/*--- printk("call_rcu(classic), called by pid=%i, recall_func=0x%lx \n", current->pid, adr); ---*/
+    /*--- printk("content: %lx \n", content); ---*/
+
+    unsigned long flags;
 
 	head->func = func;
 	local_irq_save(flags);
@@ -319,6 +324,7 @@
 /* Raises the softirq for processing rcu_callbacks. */
 static inline void raise_rcu_softirq(void)
 {
+    /*--- printk("[r]"); ---*/
 	raise_softirq(RCU_SOFTIRQ);
 }
 
@@ -332,6 +338,8 @@
 	struct rcu_head *next, *list;
 	int count = 0;
 
+    /*--- printk("[db]"); ---*/
+
 	list = rdp->donelist;
 	while (list) {
 		next = list->next;
@@ -386,6 +394,8 @@
 		rcp->cur++;
 		record_gp_stall_check_time(rcp);
 
+
+        /*--- printk("[sb]"); ---*/
 		/*
 		 * Accessing nohz_cpu_mask before incrementing rcp->cur needs a
 		 * Barrier  Otherwise it can cause tickless idle CPUs to be
@@ -530,10 +540,13 @@
 	unsigned long flags;
 	long completed_snap;
 
+    /*--- printk("[s5]"); ---*/
 	if (rdp->nxtlist) {
 		local_irq_save(flags);
 		completed_snap = ACCESS_ONCE(rcp->completed);
 
+
+        /*--- printk("[s5a]"); ---*/
 		/*
 		 * move the other grace-period-completed entries to
 		 * [rdp->nxtlist, *rdp->nxttail[0]) temporarily
@@ -676,6 +689,7 @@
  */
 void rcu_check_callbacks(int cpu, int user)
 {
+    /*--- printk("[R1]"); ---*/
 	if (user ||
 	    (idle_cpu(cpu) && !in_softirq() &&
 				hardirq_count() <= (1 << HARDIRQ_SHIFT))) {
@@ -732,6 +746,7 @@
 
 static void __cpuinit rcu_online_cpu(int cpu)
 {
+    /*--- printk(KERN_ERR "[%s] file=%s line=%d\n", __FUNCTION__, __FILE__, __LINE__); ---*/
 	struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
 	struct rcu_data *bh_rdp = &per_cpu(rcu_bh_data, cpu);