rcu: Fix outdated hotplug-exclusion comment in rcu_gp_init()

In the past, RCU grace-period initialization excluded CPU-hotplug
operations, but this is no longer the case.  This commit therefore
removed an outdated comment in rcu_gp_init() claiming that these
are excluded.

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

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 0fa692f..6043c14 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -1989,8 +1989,7 @@ static bool rcu_gp_init(struct rcu_state *rsp)
         * of the tree within the rsp->node[] array.  Note that other CPUs
         * will access only the leaves of the hierarchy, thus seeing that no
         * grace period is in progress, at least until the corresponding
-        * leaf node has been initialized.  In addition, we have excluded
-        * CPU-hotplug operations.
+        * leaf node has been initialized.
         *
         * The grace period cannot complete until the initialization
         * process finishes, because this kthread handles both.