Commit-ID: c50cbe535c972150c2caf923239ef77e85c5ad60
Gitweb: https://git.kernel.org/tip/c50cbe535c972150c2caf923239ef77e85c5ad60
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 2 May 2018 13:51:57 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 12 Jul 2018 15:38:58 -0700
rcu: Fix an obsolete ->qsmaskinit comment
Back in the old days, when grace-period initialization blocked CPU
hotplug, the ->qsmaskinit mask was indeed updated at the time that
a given CPU went offline. However, with the deferral of these updates
until the beginning of the next grace period in commit 0aa04b055e71
("rcu: Process offlining and onlining only at grace-period start"),
it is instead ->qsmaskinitnext that gets updated at that time.
This commit therefore updates the obsolete comment. It also fixes
punctuation while on the topic of comments mentioning ->qsmaskinit.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 9a5ba6db7b60..05f69b787a57 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2438,7 +2438,7 @@ static void rcu_cleanup_dying_cpu(struct rcu_state *rsp)
* This function therefore goes up the tree of rcu_node structures,
* clearing the corresponding bits in the ->qsmaskinit fields. Note that
* the leaf rcu_node structure's ->qsmaskinit field has already been
- * updated
+ * updated.
*
* This function does check that the specified rcu_node structure has
* all CPUs offline and no blocked tasks, so it is OK to invoke it
@@ -3709,7 +3709,7 @@ void rcu_cpu_starting(unsigned int cpu)
#ifdef CONFIG_HOTPLUG_CPU
/*
* The CPU is exiting the idle loop into the arch_cpu_idle_dead()
- * function. We now remove it from the rcu_node tree's ->qsmaskinit
+ * function. We now remove it from the rcu_node tree's ->qsmaskinitnext
* bit masks.
*/
static void rcu_cleanup_dying_idle_cpu(int cpu, struct rcu_state *rsp)
--
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