Commit 117f683c authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Replace this_cpu_ptr() with __this_cpu_read() 



Because __this_cpu_read() can be lighter weight than equivalent uses of
this_cpu_ptr(), this commit replaces the latter with the former.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.ibm.com>
parent 05f41571

kernel/rcu/tree_plugin.h

+1 −1
Original line number Diff line number Diff line
@@ -597,7 +597,7 @@ rcu_preempt_deferred_qs_irqrestore(struct task_struct *t, unsigned long flags) 
 */

static bool rcu_preempt_need_deferred_qs(struct task_struct *t)

{

	return (this_cpu_ptr(&rcu_data)->deferred_qs ||

	return (__this_cpu_read(rcu_data.deferred_qs) ||

		READ_ONCE(t->rcu_read_unlock_special.s)) &&

	       t->rcu_read_lock_nesting <= 0;

}