rcu: Make rcu_implicit_dynticks_qs() locals be correct size

When the ->dynticks field in the rcu_dynticks structure changed to an
atomic_t, its size on 64-bit systems changed from 64 bits to 32 bits.
The local variables in rcu_implicit_dynticks_qs() need to change as
well, hence this commit.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 0c6c30d..ebd18e5 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -488,11 +488,11 @@
  */
 static int rcu_implicit_dynticks_qs(struct rcu_data *rdp)
 {
-	unsigned long curr;
-	unsigned long snap;
+	unsigned int curr;
+	unsigned int snap;
 
-	curr = (unsigned long)atomic_add_return(0, &rdp->dynticks->dynticks);
-	snap = (unsigned long)rdp->dynticks_snap;
+	curr = (unsigned int)atomic_add_return(0, &rdp->dynticks->dynticks);
+	snap = (unsigned int)rdp->dynticks_snap;
 
 	/*
 	 * If the CPU passed through or entered a dynticks idle phase with
@@ -502,7 +502,7 @@
 	 * read-side critical section that started before the beginning
 	 * of the current RCU grace period.
 	 */
-	if ((curr & 0x1) == 0 || ULONG_CMP_GE(curr, snap + 2)) {
+	if ((curr & 0x1) == 0 || UINT_CMP_GE(curr, snap + 2)) {
 		trace_rcu_fqs(rdp->rsp->name, rdp->gpnum, rdp->cpu, "dti");
 		rdp->dynticks_fqs++;
 		return 1;