The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 3b2348e2fdf403b25a317b394db605257f321966
Gitweb: https://git.kernel.org/tip/3b2348e2fdf403b25a317b394db605257f321966
Author: Frederic Weisbecker <frederic@xxxxxxxxxx>
AuthorDate: Tue, 23 Feb 2021 01:10:08 +01:00
Committer: Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Wed, 12 May 2021 12:10:23 -07:00
rcu/nocb: Delete bypass_timer upon nocb_gp wakeup
A NOCB-gp wake p can safely delete the ->nocb_bypass_timer because
nocb_gp_wait() will recheck again the bypass state and rearm the bypass
timer if necessary. This commit therefore deletes this timer.
Reviewed-by: Boqun Feng <boqun.feng@xxxxxxxxx>
Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx>
Cc: Joel Fernandes <joel@xxxxxxxxxxxxxxxxx>
Cc: Neeraj Upadhyay <neeraju@xxxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
kernel/rcu/tree_plugin.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index a667551..4253a0e 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1701,6 +1701,8 @@ static bool __wake_nocb_gp(struct rcu_data *rdp_gp,
del_timer(&rdp_gp->nocb_timer);
}
+ del_timer(&rdp_gp->nocb_bypass_timer);
+
if (force || READ_ONCE(rdp_gp->nocb_gp_sleep)) {
WRITE_ONCE(rdp_gp->nocb_gp_sleep, false);
needwake = true;
|