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rcu: Remove stale comment in tree.c 

This commit removes a stale comment in rcu/tree.c which was left
out when some code was moved around previously in commit 2036d94a7b
("rcu:  Rework detection of use of RCU by offline CPUs") For reference,
the following updated comment exists a few lines below this which means
the same:

/* Remove the outgoing CPU from the masks in the rcu_node hierarchy. */

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Pranith Kumar 2014-07-16 22:20:33 -04:00 committed by Paul E. McKenney
parent fafb6e843f
commit 66d701ea7e
1 changed files with 0 additions and 2 deletions
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kernel/rcu/tree.c
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@ -2220,8 +2220,6 @@ static void rcu_cleanup_dead_cpu(int cpu, struct rcu_state *rsp)
/* Adjust any no-longer-needed kthreads. */ /* Adjust any no-longer-needed kthreads. */
rcu_boost_kthread_setaffinity(rnp, -1); rcu_boost_kthread_setaffinity(rnp, -1);
/* Remove the dead CPU from the bitmasks in the rcu_node hierarchy. */
/* Exclude any attempts to start a new grace period. */ /* Exclude any attempts to start a new grace period. */
mutex_lock(&rsp->onoff_mutex); mutex_lock(&rsp->onoff_mutex);
raw_spin_lock_irqsave(&rsp->orphan_lock, flags); raw_spin_lock_irqsave(&rsp->orphan_lock, flags);