rcu: Replace __this_cpu_ptr() uses with raw_cpu_ptr()

__this_cpu_ptr is being phased out.

One special case is increment_cpu_stall_ticks().
A per cpu variable is incremented so use raw_cpu_inc().

Cc: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index f7593c2..2e579c3 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1809,7 +1809,7 @@
 	struct rcu_data *rdp;
 
 	for_each_rcu_flavor(rsp) {
-		rdp = __this_cpu_ptr(rsp->rda);
+		rdp = raw_cpu_ptr(rsp->rda);
 		if (rdp->qlen_lazy != 0) {
 			atomic_inc(&oom_callback_count);
 			rsp->call(&rdp->oom_head, rcu_oom_callback);
@@ -1951,7 +1951,7 @@
 	struct rcu_state *rsp;
 
 	for_each_rcu_flavor(rsp)
-		__this_cpu_ptr(rsp->rda)->ticks_this_gp++;
+		raw_cpu_inc(rsp->rda->ticks_this_gp);
 }
 
 #else /* #ifdef CONFIG_RCU_CPU_STALL_INFO */