rcu: Rename dynticks_completed to completed_fqs

This field is used whether or not CONFIG_NO_HZ is set, so the
old name of ->dynticks_completed is quite misleading.

Change to ->completed_fqs, given that it the value that
force_quiescent_state() is trying to drive the ->completed field
away from.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12578890423298-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/rcutree.c

@@ -187,7 +187,7 @@ static struct rcu_node *rcu_get_root(struct rcu_state *rsp)
  */
 static void dyntick_record_completed(struct rcu_state *rsp, long comp)
 {
-	rsp->dynticks_completed = comp;
+	rsp->completed_fqs = comp;
 }
 
 #ifdef CONFIG_SMP
@@ -197,7 +197,7 @@ static void dyntick_record_completed(struct rcu_state *rsp, long comp)
  */
 static long dyntick_recall_completed(struct rcu_state *rsp)
 {
-	return rsp->dynticks_completed;
+	return rsp->completed_fqs;
 }
 
 /*

kernel/rcutree.h

@@ -264,6 +264,8 @@ struct rcu_state {
 	long orphan_qlen;			/* Number of orphaned cbs. */
 	spinlock_t fqslock;			/* Only one task forcing */
 						/*  quiescent states. */
+	long	completed_fqs;			/* Value of completed @ snap. */
+						/*  Protected by fqslock. */
 	unsigned long jiffies_force_qs;		/* Time at which to invoke */
 						/*  force_quiescent_state(). */
 	unsigned long n_force_qs;		/* Number of calls to */
@@ -278,8 +280,6 @@ struct rcu_state {
 	unsigned long jiffies_stall;		/* Time at which to check */
 						/*  for CPU stalls. */
 #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
-	long dynticks_completed;		/* Value of completed @ snap. */
-						/*  Protected by fqslock. */
 };
 
 #ifdef RCU_TREE_NONCORE