tree 9476ba20a1ddab23b73d2b3185f323061151d02e
parent af8c34ce6ae32addda3788d54a7e340cad22516b
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1460116803 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1465945299 -0700

rcu: Fix outdated rcu_scheduler_active comment

The comment header for rcu_scheduler_active states that it is used
to optimize synchronize_sched() at early boot.  This is incorrect.
The synchronize_sched() function instead checks the number of online
CPUs.  This commit therefore replaces the comment's synchronize_sched()
with synchronize_rcu(), which really does use rcu_scheduler_active for
this purpose.

Reported-by: Lihao Liang <lihao.liang@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>