[tip:core/rcu] rcutorture/formal: Replace synchronize_sched() with synchronize_rcu()

["tip-bot for Paul E. McKenney" <tipbot@xxxxxxxxx>]

Commit-ID:  df56e0f960627f606cfc6ccda25c6ab5c61953d5
Gitweb:     https://git.kernel.org/tip/df56e0f960627f606cfc6ccda25c6ab5c61953d5
Author:     Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
AuthorDate: Wed, 7 Nov 2018 15:27:40 -0800
Committer:  Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
CommitDate: Sat, 1 Dec 2018 12:38:52 -0800

rcutorture/formal: Replace synchronize_sched() with synchronize_rcu()

Now that synchronize_rcu() waits for preempt-disable regions of code
as well as RCU read-side critical sections, synchronize_sched() can be
replaced by synchronize_rcu().  This commit therefore makes this change,
even though it is but a comment.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
---
 .../selftests/rcutorture/formal/srcu-cbmc/include/linux/types.h       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/formal/srcu-cbmc/include/linux/types.h b/tools/testing/selftests/rcutorture/formal/srcu-cbmc/include/linux/types.h
index 891ad13e95b2..d27285f8ee82 100644
--- a/tools/testing/selftests/rcutorture/formal/srcu-cbmc/include/linux/types.h
+++ b/tools/testing/selftests/rcutorture/formal/srcu-cbmc/include/linux/types.h
@@ -131,8 +131,8 @@ struct hlist_node {
  * weird ABI and we need to ask it explicitly.
  *
  * The alignment is required to guarantee that bits 0 and 1 of @next will be
- * clear under normal conditions -- as long as we use call_rcu(),
- * call_rcu_bh(), call_rcu_sched(), or call_srcu() to queue callback.
+ * clear under normal conditions -- as long as we use call_rcu() or
+ * call_srcu() to queue callback.
  *
  * This guarantee is important for few reasons:
  *  - future call_rcu_lazy() will make use of lower bits in the pointer;