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rcu: Fix outdated hotplug-exclusion comment in rcu_gp_init()

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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removed an outdated comment in rcu_gp_init() claiming that these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>
This commit is contained in:
Paul E. McKenney
2016-04-10 08:23:24 -07:00
parent 0d95092ccb
commit 590d1757b9
1 changed files with 1 additions and 2 deletions
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kernel/rcu/tree.c
+1 -2
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@@ -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 * of the tree within the rsp->node[] array. Note that other CPUs
* will access only the leaves of the hierarchy, thus seeing that no * will access only the leaves of the hierarchy, thus seeing that no
* grace period is in progress, at least until the corresponding * grace period is in progress, at least until the corresponding
* leaf node has been initialized. In addition, we have excluded * leaf node has been initialized.
* CPU-hotplug operations.
* *
* The grace period cannot complete until the initialization * The grace period cannot complete until the initialization
* process finishes, because this kthread handles both. * process finishes, because this kthread handles both.