[PATCH v5 14/45] rcu, CPU hotplug: Fix comment referring to stop_machine()

[Srivatsa S. Bhat]

Don't refer to stop_machine() in the CPU hotplug path, since we are going
to get rid of it. Also, move the comment referring to callback adoption
to the CPU_DEAD case, because that's where it happens now.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat at linux.vnet.ibm.com>
---

 kernel/rcutree.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index e441b77..ac94474 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -2827,11 +2827,6 @@ static int __cpuinit rcu_cpu_notify(struct notifier_block *self,
 		break;
 	case CPU_DYING:
 	case CPU_DYING_FROZEN:
-		/*
-		 * The whole machine is "stopped" except this CPU, so we can
-		 * touch any data without introducing corruption. We send the
-		 * dying CPU's callbacks to an arbitrarily chosen online CPU.
-		 */
 		for_each_rcu_flavor(rsp)
 			rcu_cleanup_dying_cpu(rsp);
 		rcu_cleanup_after_idle(cpu);
@@ -2840,6 +2835,10 @@ static int __cpuinit rcu_cpu_notify(struct notifier_block *self,
 	case CPU_DEAD_FROZEN:
 	case CPU_UP_CANCELED:
 	case CPU_UP_CANCELED_FROZEN:
+		/*
+		 * We send the dead CPU's callbacks to an arbitrarily chosen
+		 * online CPU.
+		 */
 		for_each_rcu_flavor(rsp)
 			rcu_cleanup_dead_cpu(cpu, rsp);
 		break;